Relevant bibliographies by topics / Dielectric filter

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Dielectric filter'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Dielectric filter"

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Pietrikova, Alena, Kornel Ruman, Tibor Rovensky, and Igor Vehec. "Impact analysis of LTCC materials on microstrip filters’ behaviour up to 13 GHz." Microelectronics International 32, no. 3 (August 3, 2015): 122–25. http://dx.doi.org/10.1108/mi-01-2015-0003.

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Purpose – The purpose of this paper is to consider the adequacy of various microstrip filters’ behaviour based on different low-temperature co-fired ceramic (LTCC) dielectrics in the high frequency (HF) area up to 13 GHz. Design/methodology/approach – Low pass, band pass and band stop filters for ultra-wideband radar systems were designed, simulated, fabricated and measured using three various dielectric substrates: Dupont GreenTape 951, Dupont GreenTape 9K7 and Murata LFC. Findings – It is not possible to unambiguously determine the most suitable LTCC dielectric for these filter design because, in general, all designed filters fulfilled requirements (attenuation, cut off frequencies) with minimal divergences, but temperature-stable dielectric and physical properties of Murata LFC make them a promising ceramic for HF application (repeatability of realised experiments). Originality/value – The novelty of this work lies in unconventional usage of LTCC as material with defined dielectric properties proper for HF applications.
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Futamata, Masayuki. "Dielectric Filter for Highly Sensitive Raman Spectroscopy." Applied Spectroscopy 50, no. 2 (February 1996): 199–204. http://dx.doi.org/10.1366/0003702963906528.

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A filter spectrometer using dielectric bandpass filters eliminates Rayleigh scattering down to 10-5 while passing more than 90% of Raman signal from 50 to 2000 cm−1. It improves the optical throughput about 8–9 times in comparison to a double-stage subtractive monochromator, and about 20% in comparison to a holographic notch filter. Moreover, transmittance of the filter spectrometer does not depend on polarization of the incident light at the optimum angle. Raman spectra from powder sample of bismuth oxide and copper phthalocyanine and liquid sample of carbon tetrachloride in a glass capillary were easily observed down to 50 cm−1 with the use of the filter spectrometer combined with a single-stage monochromator.
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Mezaal, Y. S., H. H. Saleh, and H. Al-saedi. "New Compact Microstrip Filters Based on Quasi Fractal Resonator." Advanced Electromagnetics 7, no. 4 (September 3, 2018): 93–102. http://dx.doi.org/10.7716/aem.v7i4.883.

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This paper presents new microstrip devices as single band bandpass and multi band bandstop filters. The proposed filters use slotted patch microstrip resonator based on quasi fractal geometry, simulated by AWR12 software package. Both filters have quasi elliptic frequency response, designed at centre frequency of 2.437 GHz for bandpass filter and at band frequencies of 2.434, 4.032, 4.976 and 5.638 GHz GHz respectively, for multi bandstop filter. All filters are employed using RT/Duroid 6010.8 LM substrate of dielectric constant and 1.27 mm dielectric thickness. Simulation results show that the designed quasi fractal bandpass filter has very narrow fractional bandwidth of 0.38 % which is very rare in microstrip filter design. On the other hand, the projected bandstop filter offers multi narrow rejection bands that is useful in broadband wireless schemes influencing from fixed interferences. Both filters present satisfactory S11 and S21 responses besides smallness properties that stand for interesting features of the newest wireless applications. The simulated and measured frequency responses for both designed filters are in good agreement.
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Hsu, Ming Wei, Man Long Her, Wen Ko, and Yu Lin Wang. "Design and Analysis of Dual-Mode Double-Ring Resonator for Dual-Band Bandpass Filter Applications." Applied Mechanics and Materials 321-324 (June 2013): 376–82. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.376.

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In this paper, two types of miniaturized dual-mode bandpass filters (BPF), a single-ring (SR) resonator, and a double-ring (DR) resonator are developed. By applying the capacitive-coupling technique to a dual-mode ring filter, a technique is proposed to miniaturize the dual-mode double-ring filter. An adjustable dual-band bandpass filter is achieved by developing a ring resonator where the two modes are capacitively coupled. Control of the filter center frequency is determined by the diameter of the ring and by the rings annular width. Filter coupling amount can also be adjusted by disturbance (perturbation) of an open stub attached to the annular disc. Proposed filters explore both single- and double-ring architectures. A single-ring resonator acting as a dual bandpass filter to allow 3.8 GHz and 7.8 GHz single is developed. A double-ring resonator to allow 2.05 GHz and 3.9 GHz signals is also developed. The ring resonators are fabricated on RO-4003 substrate, with relative dielectric constant of 3.38, thickness of 0.8 mm, and dielectric loss tangent of 0.0025. Results indicate the filters can be applied in the communications field.
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KATSUKI, Rie, Hiroshi TAKAHASHI, Junya TANAKA, Toshikatsu AKIBA, Hiroaki IKEUCHI, Hiroyuki KAYANO, Noritsugu SHIOKAWA, and Tamio KAWAGUCHI. "WeD-1-4 Dielectric Driving Device for Superconducting Filter Tuning." Proceedings of JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment : IIP/ISPS joint MIPE 2015 (2015): _WeD—1–4–1—_WeD—1–4–3. http://dx.doi.org/10.1299/jsmemipe.2015._wed-1-4-1.

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Trubin, Alexander. "MUTUAL COUPLING COEFFICIENTS OF ROTATING RECTANGULAR DIELECTRIC RESONATORS IN CUT-OFF RECTANGULAR WAVEGUIDE." Information and Telecommunication Sciences, no. 1 (June 29, 2021): 48–54. http://dx.doi.org/10.20535/2411-2976.12021.48-54.

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Background. A further increase in the speed of information transfer is determined by more stringent requirements for the elements of communication devices. One of the most important components of such devices is various filters, which are often made on the basis of dielectric resonators. Calculation of the parameters of multi-section filters is impossible without further development of the theory of their design. The development of filter theory is based on electrodynamic modelling, which involves calculating the coupling coefficients of dielectric resonators in various transmission lines. Objective. The aim of the research is to calculate and study the coupling coefficients of rectangular dielectric resonators with a rectangular metal waveguide when their axes rotate. Investigation of new effects to improve the performance of filters and other devices based on them. Methods. Methods of technical electrodynamics are used to calculate and analyse the coupling coefficients. The end result is to obtain new analytical formulas for new structures with rectangular dielectric resonators, which make it possible to analyse and calculate their coupling coefficients. Results. New analytical expressions are found for the coupling coefficients of dielectric resonators with the rotation of their axes in a rectangular waveguide. Conclusions. The theory of designing filters based on new structures of dielectric resonators with rotation of their axes in metal waveguides has been expanded. New analytical relationships and new patterns of change in the coupling coefficients are found. Keywords: dielectric filter; rectangular dielectric resonator; rotation; coupling coefficients.
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Aly, Aly H., Badawy El-Sharawy, and Adalbert Beyer. "Modeling and Measurements of Novel Monolithic Filters." Active and Passive Electronic Components 2008 (2008): 1–8. http://dx.doi.org/10.1155/2008/537069.

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This paper presents novel multilayer tuneable highQ-filters based on hairpin resonators including ferroelectric materials. This configuration allows the miniaturization of these filters to a size that makes them suitable for chip and package integration and narrow-band applications. The main focus was miniaturizing filters with coupled loops using multilayer dielectric substrates. A further goal was to increase the quality factor of these distributed filters by embedding high dielectric materials in a multilayer high- and low-k(dielectric constant) substrate that is supported by LTCC technology. An improved W-shape bandpass filter was proposed with a wide stopband and approximately 5% bandwidth.
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Chi-Yang Chang and Wei-Chen Hsu. "Photonic bandgap dielectric waveguide filter." IEEE Microwave and Wireless Components Letters 12, no. 4 (April 2002): 137–39. http://dx.doi.org/10.1109/7260.993293.

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Wang, Xuying, Ke Bi, Yanan Hao, and Ming Lei. "Thermally tunable dielectric resonator filter." Journal of Alloys and Compounds 749 (June 2018): 363–68. http://dx.doi.org/10.1016/j.jallcom.2018.03.263.

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Xu, Kai, Yanlong Meng, Shufen Chen, Yi Li, Zhijun Wu, and Shangzhong Jin. "All-Dielectric Color Filter with Ultra-Narrowed Linewidth." Micromachines 12, no. 3 (February 27, 2021): 241. http://dx.doi.org/10.3390/mi12030241.

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In this paper, a transmissive color filter with an ultra-narrow full width at half of the maximum is proposed. Exploiting a material with a high index of refraction and an extremely low extinction coefficient in the visible range allows the quality factor of the filter to be improved. Three groups of GaP/SiO2 pairs are used to form a Distributed Brag reflector in a symmetrical Fabry-Pérot cavity. A band-pass filter which is composed of ZnS/SiO2 pairs is also introduced to further promote the purity of the transmissive spectrum. The investigation manifests that a series of tuned spectrum with an ultra-narrow full width at half of the maximum in the full visible range can be obtained by adjusting the thickness of the SiO2 interlayer. The full width at half of the maximum of the transmissive spectrum can reach 2.35 nm. Simultaneously, the transmissive efficiency in the full visible range can keep as high as 0.75. Our research provides a feasible and cost-effective way for realizing filters with ultra-narrowed linewidth.
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Dissertations / Theses on the topic "Dielectric filter"

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Chandran, Ashwin. "Self-Assembled Multilayered Dielectric Spectral Filters." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/30859.

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Thin film optical filters are made by depositing thin films of optical materials on a substrate in such a way as to produce the required optical and mechanical properties. The Electrostatic Self Assembly (ESA) process is accomplished by the alternate adsorption of poly-anionic and poly-cationic molecules on progressive oppositely charged surfaces. This technique offers several advantages such as ease of fabrication, molecular level uniformity, stable multilayer synthesis and avoidance of the need for a vacuum environment. The ESA process offers an excellent choice for manufacturing optical thin film coatings due to its capability to incorporate multiple properties into films at the molecular level and its ability to be a fast and inexpensive process. The ESA process, as a method for manufacturing optical thin film filters has been investigated in detail in this thesis. A specific design was made and analyzed using TFCalc, a commercial thin film design software. Sensitivity analysis detailing the changes in filter response to errors in thickness and refractive index produced by the ESA process were done. These proved that with a high level of quality control, highly reliable and accurate optical thin films can be made by the ESA process.
Master of Science
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Fox, Andrew John. "Invasive varactor tuning of a dielectric resonator." Thesis, Leeds Beckett University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297492.

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Guerrero, Enriquez Rubén Dario. "Etude des filtres miniatures LTCC High K en bandes L&S." Thesis, Brest, 2016. http://www.theses.fr/2016BRES0036/document.

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Dans les systèmes actuels de communication, qu’ils soient terrestre ou spatial, qu’ils soient mobile ou fixe, il y a un réel intérêt à développer des front-ends radiofréquences et hyperfréquences miniatures et performants. Ceci s’applique en particulier aux dispositifs de filtrage où l’encombrement et les facteurs de qualité sont clairement antagonistes. Pour les bandes de fréquences basses aux alentours du GHz, les longueurs d’onde restent encore importantes, rendant difficiles les efforts de miniaturisation. D’autre part il faut aussi s’assurer que ces filtres viendront s’interconnecter aisément avec les autres composants du système, notamment les actifs.Pour toutes ces raisons, le développement de structures de filtres multicouches utilisant des substrats à haute permittivité (εr = 68) selon une approche LTCC apparait comme une alternative intéressante. Elle peut en effet conduire à une réduction significative de l'empreinte (footprint) sans pour autant trop nuire aux performances électriques.Dans le cadre de ce travail, deux structures de filtres multicouches ont été développées pour répondre à des spécifications proposées en bandes L et S, par un équipementier du spatial. Ces filtres ont pour caractéristiques principales un haut niveau de rejection et des faibles pertes dans la bande passante. Pour atteindre les spécifications, un filtre SIW empilé verticalement et un filtre à stubs en court-circuit en configuration triplaque ont été étudiés. Le filtre SIW se distingue par un facteur de qualité élevé, ce qui entraîne des faibles pertes d’insertion et une bonne platitude. La solution à stub permet quant à elle de réduire l’encombrement mais au prix d’un impact sur les performances électriques. Dans les deux cas on tire parti de la souplesse offerte par la technologie LTCC, puisqu’elle offre finalement un degré de liberté supplémentaire, par rapport à une approche planaire classique. Si dans le cas SIW, c’est surtout l’architecture topologique qui a été étudiée finement pour pouvoir agencer et coupler douze cavités, dans le cas du filtre à stub une synthèse mettant à profit tous les degrés de liberté offerts a été spécifiquement développée.Compte tenu de la complexité des filtres, notamment à cause de l’ordre élevé et de la mise en oeuvre de murs « électriques » à partir d’arrangements de via spécifiques, une attention particulière doit être apportée lors des phases de simulation et d’optimisation. De plus la très forte permittivité du substrat ne permet pas d’utiliser de ligne 50 Ohms. Enfin les transitions constituent un point dur de l’exercice surtout dans le cas SIW.Cette thèse co-financée par le CNES (Centre National d'Etudes Spatiales) et Thales Alenia Space, était accompagnée par un projet R&T financé par le CNES. Le fondeur allemand Via Electronic avait en charge la fabrication des filtres
In current communication systems, whether terrestrial or spatial, whether fixed or mobile, there is a real interest in developing high performance miniature RF front-ends. This is applied in particular to filter devices, in which the size and the quality factors are clearly in conflict. For low frequency bands around the GHz, the wavelengths remain significant, making it difficult the miniaturization efforts. On the other hand, we must also ensure that these filters will be easily interconnected with other other system components, including active devices.For all these reasons, the development of multilayer filter structures using high permittivity substrates (Er = 68) in an LTCC approach is consolidated as an interesting alternative. It may lead to a significant footprint reduction without decreasing the electrical performances.As part of this work, two multilayer filter structures have been developed to meet the given specifications in L and S bands, given by a space manufacturer. These filters have as main features a high rejection level and low losses in the passband. To meet the specifications, a vertically stacked SIW filter and a short-circuited stubs filter in a stripline configuration were studied. The SIW filter is characterized by a high quality factor, which results in low insertion loss and good flatness. The stubs filter allows in contrast to reduce the footprint but at the price of impacting the electrical performance. In both cases we take advantage of the flexibility offered by the LTCC technology as it finally provides an additional freedom degree compared to a conventional planar approach. For the SIW filter, the topological architecture was studied and designed in detail, to be able to arrange and synthetize couplings between twelve cavities. In a similar way, for the stub filter a synthesis that takes profit of all the offered freedom degrees was developed.Given the filters complexity, especially due to the high order and the implementation of “electrical walls" based on specific vias patterns, a close attention must be paid during the simulation and optimization phase. In addition, the high permittivity substrate does not allow to conceive 50-Ohms lines. Finally, access transitions constitute a challenging task, especially for the SIW case.This thesis was co-funded by CNES (Centre National d'Etudes Spatiales) and Thales Alenia Space, and was accompanied by an R&T project funded by CNES. The German foundry Via Electronic was responsible for the filters fabrication
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Lazraq, Byström Joseph. "Characterization of Magneto-Dielectric Materials for Microwave Devices." Thesis, Uppsala universitet, Fasta tillståndets elektronik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-419515.

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There is an increasing interest in using new composite materials in microwave devices, to reduce size and weight while maintaining similar performances. A new promising material group is named magneto-dielectric materials, which have the permittivity and permeability values both larger than one. Compared to the commercially used dielectric materials, magneto-dielectric materials can achieve a larger miniaturization factor with the equivalent properties as dielectric materials. There is a very limited availability of commercial magneto-dielectric materials. A recent addition was from Rogers Corporation with MAGTREX 555, [1], that is available as a printed circuit board laminate. The material is limited to 500 MHz operational frequency due to its increased magnetic and dielectric losses. In this thesis the purpose is to understand the loss mechanisms, characterize and understand the state-of-the-art magneto-dielectric materials at microwaves, and to produce a magneto-dielectric material in the lab to understand the material better. A new material was developed with magneto-dielectric properties. The material was based on a polymer base of polystyrene that serves as a dielectric material and doped with nickel nanoparticles that produce the magnetic properties. The contents of the nanoparticles in the mix is a design variable. Nickel-polystyrene samples with different nickel contents of 0%, 2.3% and 4.5%, were produced in the lab and measured in-house to understand the loss mechanism and RF performance.
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Abdolvand, Reza. "Thin-film piezoelectric-on-substrate resonators and narrowband filters." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/28113.

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Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008.
Committee Chair: Farrokh Ayazi; Committee Member: James D. Meindl; Committee Member: John D. Cressler; Committee Member: Nazanin Bassiri-Gharb; Committee Member: Oliver Brand.
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Marchives, Yoann. "Development of 3D filter made by stereolithography." Thesis, Limoges, 2016. http://www.theses.fr/2016LIMO0073/document.

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Les télécommunications sont devenus indispensables dans notre monde actuel. De plus, le volume des données échangées ne cesse de croître. En effet, nous pouvons transmettre nos photos, nos vidéos au monde entier. Nonobstant, nous ne voulons pas attendre pour les avoir, ce qui exige un débit de données très important et par conséquent des signaux avec des bandes passantes plus larges. Les satellites de télécommunications doivent donc s’adapter, c'est pourquoi nous proposons dans ces travaux la recherche de filtre à large bande avec une recherche de compacité et de faibles pertes. Nous nous sommes intéressés à l'utilisation de matériaux céramiques qui permettent d'obtenir de bonnes performances vis à vis de nos besoins. Notre travail est aussi rendu possible par le développement de procédés de fabrication additifs, comme par exemple la stéréolithographie, qui va nous permettre de nous affranchir fortement de règles de dessin contraignantes que nous pourrions avoir en utilisant des procédés classiques. Nous avons développé des filtres avec de larges bandes passantes autour de 4GHz. Une première étude nous a permis de rechercher des concepts qui permettent d'obtenir de forts couplages, conditions sine qua non pour réaliser ces filtres. Plusieurs concepts sont présentés ainsi que leur fabrication et leur mesures. Nous avons ainsi démontré expérimentalement que les concepts proposés, à base de pièces monoblocs céramiques, sont capables de produire des filtres à bandes passantes supérieures à 60 % (voire même 110 % pour une version améliorée)
Every day, the data exchanges increase thanks to the new technologies. We can keep our files, our pictures, our videos online to have an access anywhere on the planet (for now). In this way, the data output of the telecommunication systems has to be increased in order to satisfy the more and more demanding users. One way to allow this is to increase the bandwidths of the different signals, making possible to transmit more data at the same time. In this work, we will develop wide bandpass filters dedicated to space telecommunications. For that purpose, we need them to be compact, with low insertion loss and a limited number of parts to assemble. Consequently, we are interested to use resonators made with ceramic materials that permits to reach such properties. Moreover, these materials are compatible with stereolithography, an additive manufacturing process. Such technology is here very useful for our purpose since its design freedom allows the creation of almost all kind of geometries. To realize such wide bandpass filters, we need strong couplings between the different resonators and also for the accesses, so we will present our studies focused on reaching these specific objectives. Then, we will present different designs of wide bandpass filter around 4GHz. After different generation of ceramic based components, we are be able to experimentally create a 60% bandwidth (even 100% for our last version) very compact bandpass filter filling the objectives of this PhD thesis
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Moradi, Bahareh. "High dielectric permittivity materials in the development of resonators suitable for metamaterial and passive filter devices at microwave frequencies." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/384854.

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Los metamateriales (MTMs) representan una interesante área de investigación emergente que promete lograr un importante progreso tecnológico y científico en diversas áreas como las telecomunicaciones, la microelectrónica, radar, e imágenes médicas. La cantidad de artículos dedicados a la investigación en esta área (MTMs) se mantiene en pleno crecimiento en la actualidad. Las estructuras MTMs pueden sostener una fuerte resonancia electromagnética con longitudes de onda electricamente pequeñas y por lo tanto son potencialmente aplicables para la miniaturización de los componentes. La miniaturización, optimización del rendimiento del dispositivo mediante la eliminación de frecuencias espurias, y la posibilidad de controlar el ancho de banda del filtro para amplios márgenes de frecuencias es un reto para los presentes y futuros dispositivos de comunicación. Esta tesis se focaliza en el estudio de ambos temas (MTMs y miniaturización) centrándose en las nuevas estrategias para la miniaturización de componentes basados en MTMs. Desde la aparición de estos, los resonadores dieléctricos (DR) son un nuevo tipo de MTMs distinguidos por sus pequeñas pérdidas, así como su fácil combinación con estructuras externas; son la elección adecuada para todo proceso de desarrollo. La principal ventaja de utilizar una alta constante dieléctrica como DR es miniaturizar el tamaño del filtro. El tamaño del filtro de DR es considerablemente menor que la dimensión de la guía de ondas de otros filtros que operan a la misma frecuencia. Dada una constante dieléctrica, tanto la frecuencia de resonancia como el factor de calidad Q se definen a partir de las dimensiones del resonador dieléctrico. Cuanto mayor es la constante dieléctrica, menor es el espacio en el que se concentran los campos, y por lo tanto las dimensiones necesarias para trabajar a una frecuencia de operación definida quedan reducidas. Con el objetivo de miniaturizar las dimensiones del dispositivo, en este trabajo se propone un nuevo diseño para un filtro rechaza banda basado en la alta constante dieléctrica que proporciona una fina capa de pasta epoxy (TFDR) como material DRs excitado a través de una línea microstrip. Además, se propone un filtro pasa banda diseñado en base a los resonadores dieléctricos incrustados (EDR), esto constituye un nuevo enfoque en el campo de los resonadores miniaturizados adaptado a los metamateriales, logrando evitar la degradación del factor Q inherente al coeficiente de acoplamiento basado en partículas eléctricamente pequeñas. En esta tesis se propone también un nuevo filtro pasa de banda basado en resonadores de anillo dividido (SRRs), que es uno de los bloques de construcción MTMs más popular hoy en día. Los filtros de paso de banda basados en este concepto resultan prometedores para las aplicaciones donde la miniaturización y la compatibilidad con la tecnología de ondas planares milimétricas son los requisitos críticos del diseño. Además, para mayor miniaturización, tecnología DR de incrustado es reportada. Otro enfoque para la reducción de tamaño se basa en modificar el resonador tradicional para generar modos adicionales, los cuales hacen que el resonador se comporte como un resonador multimodal. Por último, se propone un filtro compacto paso banda de banda ultra ancha (UWB) utilizando un resonador de anillo abierto conectado a tierra empleado como un resonador multimodal (MMR). Esta propuesta permite utilizar cinco resonancias para producir un ancho de banda fraccional del 128% dentro de la banda ultra ancha. Para demostrar y validar la funcionalidad de los diseños, todos los dispositivos propuestos se han implementado y fabricado, con una excelente concordancia entre las simulaciones y las medidas experimentales. A través de estos métodos ha quedado demostrado que los modelos de sus circuitos equivalentes proporcionan una descripción precisa del comportamiento de las estructuras. En este trabajo se ha conseguido relacionar una relación directa entre las dimensiones físicas del dispositivo y su modelo equivalente eléctrico en forma de circuito.
Metamaterials (MTMs) represent an exciting emerging research area that promises to bring about important technological and scientific advancement in various areas such as telecommunication, radar, microelectronic, and medical imaging. The amount of research on this MTMs area has grown extremely quickly in this time. MTM structure are able to sustain strong sub-wavelength electromagnetic resonance and thus potentially applicable for component miniaturization. Miniaturization, optimization of device performance through elimination of spurious frequencies, and possibility to control filter bandwidth over wide margins are challenges of present and future communication devices. This thesis is focused on the study of both interesting subject (MTMs and miniaturization) which is new miniaturization strategies for MTMs component. Since, the dielectric resonators (DR) are new type of MTMs distinguished by small dissipative losses as well as convenient conjugation with external structures; they are suitable choice for development process. The primary advantage in using a high dielectric constant as a DR is to miniaturize the filter size. The size of DR filter is considerably smaller than the dimension of waveguide filters operate at the same frequency. For a given dielectric constant, both resonant frequency and Q-factor are defined according to the dielectric resonator dimensions. That, the higher the dielectric constant, the smaller the space within which the fields are concentrated, the lower the dimension at a defined frequency. To obtain the required compact sizes new stop-band filter is proposed in this work based on number of thick film high dielectric constant epoxy paste (TFDR) as DRs which excited with a microstrip line. In addition, a band-pass filter is proposed based on embedded dielectric resonators (EDR) constitutes a new approach to the miniaturized resonators suitable for metamaterials design without the Q degradation inherent to the coupling coefficient based on sub-wavelength particles. Also this thesis is proposed a new band-pass filter based on split ring resonators (SRRs), which is a one of the popular MTMs building blocks today. The band-pass filters based on this concept can be very promising for the applications where miniaturization and compatibility with planar millimeter wave technology are the important issues. Also, for further miniaturization, embedded DR technology is reported. Another approach for size reduction is modifying the traditional resonator to generate additional modes, which make the resonator to behave as a multimode resonator. Finally a compact ultra-wide band-pass (UWB) band-pass filter using grounded open ring resonator as a multimode resonator (MMR) is proposed. The approach allows using five resonances to produce a 128% fractional bandwidth into the ultra-wide band. A general theoretic framework has been established using transmission matrix description of the filter constituent components. To demonstrate and validate designs functionality, all the proposed devices are implemented and fabricated, which a good agreement between simulations and measurement are obtained. Through these methods it is demonstrated that their equivalent circuit models provide an accurate description of the considered structures. Indeed, a clear relationship between their equivalents circuit model and the layout physical dimensions were found.
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Jolly, Nicolas. "Filtres accordables volumiques à forts facteurs de qualité pour des applications spatiales." Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0103/document.

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A l'heure où la demande en quantité d'informations et le nombre d'utilisateurs explosent, toujours avec des limitations en allocation en fréquence et bande passante, les systèmes de télécommunication tendent à optimiser la gestion de leur capacité en s'orientant vers des systèmes reconfigurables. Dans le cas des filtres d'OMUX, apporter de l'accordabilité en conservant d'excellentes performances électriques, thermiques et mécaniques soulève de nombreuses difficultés.Nous avons dans un premier temps démontré la faisabilité sur un filtre à saut de canal à bande passante constante par le biais d'une cavité métallique chargée par un perturbateur en alumine en mouvement de rotation. Ensuite, nous avons proposé des solutions pour avoir un contrôle de la fréquence et de la bande passante en se basant sur la translation de matériaux diélectriques. Les facteurs de qualité mis en jeu sont de l'ordre de la dizaine de milliers. Enfin nous avons tiré profit de l'évolution des technologies d'impression plastique 3D pour valider différents concepts de filtres accordables
At a time when the amount of information and the number of users go through the roof in telecommunication market, the telecommunication systems tend to improve the management of their capacity by moving toward reconfigurable RF devices. However frequency and bandwidth allocated are still restricted. Regarding tunable OMUX filters, the actuation systems generally degrade the overall performances of the device and raise questions in terms of mechanic and thermic.We first demonstrated the feasability of a two state filter with constant narrowband, using a dielectric material (alumina) in rotation inside a metallic housing. Then, we suggested solutions to control both frequency and bandwidth with the translation of a ceramics. We deal with quality factor in the range of ten of thousands for these applications. Eventually, we validated some principle for tunable filters thanks to the efficiency of 3D plastic printer
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9

Luo, Zhaoju. "Linear Optical Thin Films Formed by Electrostatic Self-Assembly." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/10168.

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The Electrostatic Self-Assembly (ESA) technique possesses great advantages over traditional thin film fabrication methods, making it an excellent choice for a number of applications in the fields of linear and nonlinear optics, electronics, sensing and surface coatings. The feasibility of fabricating linear optical interference filters by ESA methods is demonstrated in this thesis work. Basic single-anion/single-cation ESA films are synthesized and their optical parameters -- refractive index and average thickness for individual bilayer -- are investigated to provide a basis for the in-depth design of optical filters. High performance dielectric stack filters and narrowband and wideband antireflection coatings are designed using TFCalc simulation software and are fabricated by ESA. Both bulk film sensitivity and layer sensitivity to manufacturing errors are provided. The significant agreement between simulation and experiment demonstrates the strong capability of ESA to precisely control the refractive index and produce excellent thin film filters. The performance of optical thin film filters is largely enhanced compared to the results of previous methods. The experiment results indicate that the ESA process may be used to fabricate optical filters and other optical structures that require precise index profile control.
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10

Malek, Abadi Seyed Ali. "Solutions et matériaux nouveaux pour guide d'onde Térahertz." Thèse, Université de Sherbrooke, 2014. http://hdl.handle.net/11143/5914.

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Dans cette thèse, une étude approfondie sur des matériaux et des solutions pratiques est réalisée afin de répondre aux difficultés rencontrées dans la propagation des ondes à des fréquences térahertz (THz). Deux matériaux ont été identifiés comme étant prometteur: le graphène et le silicium à haute résistivité (HR-Si). Une première solution, basée sur des guides d’ondes à plaques parallèles (parallel plate waveguide-PPWG) avec des conditions de fermetures conducteur parfait (perfect electric conductor-PEC) -- graphène et graphène -- graphène a été analysée dans un premier temps. En considérant l'excitation du graphène par un champ électrique seulement, puis par un champ électromagnétique statique, les équations de Maxwell ont été résolues sous ces deux conditions et les constantes de propagations des différents modes ont été extraites. La démonstration de l'existence d'un mode propagatif hybride à l'intérieur du guide est faite dès que le graphène est excité par un champ magnétique. De plus, il est montré que l'intensité de chaque type de modes, transverse électrique (TE) ou transverse magnétique (TM), peut être ajustée suivant les champs d'excitation du graphène. Bien que le guide à plaques parallèles utilisant du graphène permette d'avoir des propriétés agiles, soit le contrôle des modes selon l'excitation du graphène, il n'en reste pas moins vrai que la faible conductivité intrinsèque au graphène conduit à un problème d'atténuation importante de l'onde. De plus, la difficulté d'obtenir des couches de graphène de taille adéquate entrave le développement de composants et de circuits fonctionnels, utilisables et à un coût raisonnable. La thèse porte ensuite sur l’étude du silicium haute résistivité pour guider des ondes aux fréquences térahertz. Tout d’abord, un guide composé d'une couche de HR-Si, de section rectangulaire dont la largeur est très grande par rapport à la hauteur, est caractérisé en utilisant un système de spectroscopie dans le domaine du temps, système permettant d'obtenir un large spectre de fréquences dans le domaine THz. Par cette caractérisation, les faibles pertes et la faible dispersion du HR-Si est démontrée. Cependant, il est aussi démontré que la géométrie du guide n'est pas optimale, conduisant à des pertes par dispersion de l'onde à l'intérieur du guide au fur et à mesure de sa propagation. Aussi, pour éviter cette dispersion, un confinement de l'onde est proposé en réduisant la largeur de la couche HR-Si pour la rendre de l'ordre de la hauteur (confinement en x et y, propagation en z) conduisant ainsi à la réalisation d'un guide d’ondes diélectrique en ruban (dielectric ribbon waveguide-DRW). Une analyse approfondie de la propagation d'une telle structure a conduit à concevoir un guide à faibles pertes d'une part, mais également à propagation monomode sur une large bande de fréquence. Une méthode de fabrication simple a été développée pour réaliser ce type de guide et un banc de mesure spécifique a été mis en place pour caractériser ce nouveau guide. Les mesures réalisées utilisent un analyseur de réseaux vectoriel (un PNA-X d'Agilent) auquel est branché deux têtes de mesure de la compagnie Virginia Diode Inc's (VDI) pour obtenir les bandes de fréquences désirées. Les sorties sont alors en guide rectangulaire standard, soit WR-8, soit WR-5 selon la plage de fréquence visée. Les résultats des mesures se comparent très bien avec les simulations réalisées avec un logiciel utilisant la méthode des éléments finis en trois dimensions (HFSS de la compagnie ANSYS) permettant d'obtenir les paramètres de la matrice de diffraction (S) mesurée par l'analyseur de réseau vectoriel. Finalement, dans le chapitre 6, un filtre passe-bande est développé comme preuve de concept pour l'utilisation du guide DRW utilisant le matériau HR-Si. Outre les faibles pertes et la propagation monomode d'un tel guide DRW, il est aussi montré dans cette thèse la facilité du processus de fabrication, le faible coût de ce procédé ainsi que la possibilité d'intégration avec d'autres composants passifs et actifs. Avec toutes ces caractéristiques très intéressantes sur différents plans, le guide DRW en HR-Si apparaît comme une solution très compétitive pour devenir un standard dans la bande de fréquence des THz.
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Books on the topic "Dielectric filter"

1

1950-, Suzuki Yasuo, Kogami Yoshinori 1964-, and Denshi Jōhō Tsūshin Gakkai (Japan), eds. Maikuro-ha yūdentai firuta: Microwave dielectric filters. Tōkyō: Denshi Jōhō Tsūshin Gakkai, 2007.

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United States International Trade Commission. In the matter of certain dielectric miniature microwave filters and multiplexers containing same: Temporary relief proceedings. Washington, DC: U.S. International Trade Commission, 1994.

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M, Bezborodov I͡U. Filʹtry SVCh na diėlektricheskikh rezonatorakh. Kiev: "Tėkhnika", 1989.

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Benedict, Terry J. An advanced study of natural convection immersion cooling of 3 x 3 array of simulated components in an enclosure filled with dielectric liquid. Monterey, California: Naval Postgraduate School, 1988.

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Aytar, Erol. Natural convection immersion cooling of an array of heated protrusions in an enclosure filled with dielectric liquid: Effects of enclosure width and fluid Prandtl number. Monterey, Calif: Naval Postgraduate School, 1991.

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Torres, Edgardo I. Natural convection cooling of a 3 by 3 array of rectangular protrusions in an enclosure filled with dielectric liquid: Effects of boundary conditions and component orientation. Monterey, Calif: Naval Postgraduate School, 1988.

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Powell, Mark E. Natural convection from an array of rectangular protrusions in an enclosure filled with dielectric fluid: Effects of boundary conditions, fluid Prandtl number, and selective component powering. Monterey, Calif: Naval Postgraduate School, 1989.

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Matthews, Scott T. Natural convection immersion cooling of an array of vertically oriented heated protrusions in an enclosure filled with a dielectric liquid: Effects of enclosure width, Prandtl number and component orientation. Monterey, Calif: Naval Postgraduate School, 1991.

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Mahdi, Abdulmumini. Design of dielectric resonator band-pass filter. Bradford, 1987.

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F, Van Keuls, Miranda F. A, and Lewis Research Center, eds. A novel K-band tunable microstrip bandpass filter using a thin film HTS/ferroelectric/dielectric multilayer configuration. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.

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Book chapters on the topic "Dielectric filter"

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Weik, Martin H. "dielectric filter." In Computer Science and Communications Dictionary, 402. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_4961.

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Vimal, Sanjeev Sharma, Anil Kumar Sharma, and Rajesh Tiwari. "Tunable Filter at Second Transmission Window Containing 1D Ternary Superconductor/Dielectric Photonic Crystals." In Computational and Experimental Methods in Mechanical Engineering, 189–95. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2857-3_20.

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Kochergin, Vladimir. "Omnidirectional Dielectric Reflectors." In Omnidirectional Optical Filters, 105–23. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4757-3793-6_4.

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Tilsch, Markus K., Robert B. Sargent, and Charles A. Hulse. "Dielectric Multilayer Filters." In Springer Series in Optical Sciences, 289–340. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-31770-8_8.

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Trubin, Alexander. "Multisection Filters on Dielectric Resonators’ Lattices." In Lattices of Dielectric Resonators, 47–77. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-25148-6_3.

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Williams, P. F. "Laser Triggering of Gas Filled Spark Gaps." In Gaseous Dielectrics VI, 331–39. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3706-9_41.

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Imai, Takahiro. "Chapter 3 Nano-Filler Dispersion for Tailoring of Nanocomposite Dielectrics." In Tailoring of Nanocomposite Dielectrics, 41–76. Penthouse Level, Suntec Tower 3, 8 Temasek Boulevard, Singapore 038988: Pan Stanford Publishing Pte. Ltd., 2016. http://dx.doi.org/10.1201/9781315201535-4.

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Ramírez-Vázquez, Isaías. "Chapter 10 Suppression of Surface Erosion by Surface-Treated Fillers." In Tailoring of Nanocomposite Dielectrics, 281–318. Penthouse Level, Suntec Tower 3, 8 Temasek Boulevard, Singapore 038988: Pan Stanford Publishing Pte. Ltd., 2016. http://dx.doi.org/10.1201/9781315201535-11.

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Ohki, Yoshimichi. "Chapter 13 Permeability Control by Nano-Magnetic Fillers: Case Study." In Tailoring of Nanocomposite Dielectrics, 369–84. Penthouse Level, Suntec Tower 3, 8 Temasek Boulevard, Singapore 038988: Pan Stanford Publishing Pte. Ltd., 2016. http://dx.doi.org/10.1201/9781315201535-14.

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Melnychenko, M. S., Yu S. Perets, L. L. Aleksandrovych, L. L. Vovchenko, O. A. Lazarenko, and Lyudmila Yu Matzui. "Dielectric Properties of Nanocarbon Polymer Composites with Binary Filler." In Springer Proceedings in Physics, 855–71. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56422-7_66.

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Conference papers on the topic "Dielectric filter"

1

Du, Zhengjun, Jin Pan, Xinyang Ji, Deqiang Yang, and Xianfeng Liu. "Ceramic Dielectric-Filled Cavity Filter." In 2020 IEEE 5th Information Technology and Mechatronics Engineering Conference (ITOEC). IEEE, 2020. http://dx.doi.org/10.1109/itoec49072.2020.9141681.

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Qing-Tao Huang and Qing-Xin Chu. "Dual-mode dielectric filter." In 2016 IEEE International Conference on Computational Electromagnetics (ICCEM). IEEE, 2016. http://dx.doi.org/10.1109/compem.2016.7588560.

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Horie, Yu, Amir Arbabi, Ehsan Arbabi, Seyedeh Mahsa Kamali, and Andrei Faraon. "Dielectric metasurface narrowband filter array." In CLEO: Science and Innovations. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/cleo_si.2016.sth1e.7.

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Aydogan, Ahmet, Funda Akleman, and Serkan Yildiz. "Dielectric loaded waveguide filter design." In 2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE). IEEE, 2016. http://dx.doi.org/10.1109/isfee.2016.7803158.

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Jankovic, U., N. Mohottige, D. Budimir, and V. Petrovic. "Electromagnetic modelling of dielectric-filled waveguide antenna filter arrays." In 2013 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2013. http://dx.doi.org/10.1109/aps.2013.6711719.

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Balaji, Uma. "Design of resonant iris filter with dielectric filled cavities." In 2011 IEEE Long Island Systems, Applications and Technology Conference (LISAT). IEEE, 2011. http://dx.doi.org/10.1109/lisat.2011.5784223.

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Liu, Yan, Jin Pan, Qianlin Yang, Long Wang, and Xinyang Ji. "A Half-cut Miniaturized Ceramic Dielectric Filled Cavity Filter." In 2021 IEEE 5th Advanced Information Technology, Electronic and Automation Control Conference (IAEAC). IEEE, 2021. http://dx.doi.org/10.1109/iaeac50856.2021.9391058.

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Liu, Yun, Cristiano Tomassoni, and Shuai Jiang. "Novel Triple-mode Dielectric Cavity Filter Using Grooved Dielectric Resonator." In 2020 IEEE Asia-Pacific Microwave Conference (APMC 2020). IEEE, 2020. http://dx.doi.org/10.1109/apmc47863.2020.9331578.

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Kim, Sangsik, Mengren Man, Minghao Qi, and Kevin J. Webb. "Multilayer Metal-Dielectric Stack Ultraviolet Filter." In Frontiers in Optics. Washington, D.C.: OSA, 2013. http://dx.doi.org/10.1364/fio.2013.jw3a.30.

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Chen, Ning. "Millimeter wave wgm dielectric resonator filter." In International Conference on Millimeter and Submillimeter Waves and Applications 1994. SPIE, 2017. http://dx.doi.org/10.1117/12.2303313.

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Reports on the topic "Dielectric filter"

1

Nahman, N. S. Long term stability of the NBS design Debye dielectric coaxial line waveshaping filter. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/527551.

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Nahman, N. S. Long term stability of the NBS design Debye dielectric coaxial line wave shaping filter. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/527552.

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Curtis, John O. Dielectric Properties of Landmine Fillers (Waxes and Sands). Fort Belvoir, VA: Defense Technical Information Center, January 1997. http://dx.doi.org/10.21236/ada386138.

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ANDERSON, ROBERT A., ROBERT R. LAGASSE, JOHN L. SCHROEDER, DAVID H. ZEUCH, and STEPHEN T. MONTGOMERY. Pulsed Dielectric Breakdown of Aluminum Oxide (ALOX) Filled Epoxy Encapsulants: Effects of Formulation and Electric Stress Concentration. Office of Scientific and Technical Information (OSTI), September 2001. http://dx.doi.org/10.2172/787611.

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