Relevant bibliographies by topics / Artificial magnetic conductor (AMC)

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Artificial magnetic conductor (AMC)'

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

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Artificial magnetic conductor (AMC).'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Artificial magnetic conductor (AMC)"

1

de Cos, M. E., and F. Las-Heras. "Novel Flexible Artificial Magnetic Conductor." International Journal of Antennas and Propagation 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/353821.

Full text
Abstract:
A novel flexible uniplanar AMC design is presented. An AMC prototype is manufactured using laser micromachining and it is characterized under flat and bent conditions by measuring its reflection coefficient phase in an anechoic chamber. The designed prototype shows broad AMC operation bandwidth (6.96% and higher) and polarization angle independency. Its angular stability margin, when operating under oblique incidence, is also tested obtaining±8°as limit for a 14.4 cm × 14.4 cm prototype.
APA, Harvard, Vancouver, ISO, and other styles
2

Muhamad, Maizatun, Maisarah Abu, Zahriladha Zakaria, and Hasnizom Hassan. "Novel Artificial Magnetic Conductor for 5G Application." Indonesian Journal of Electrical Engineering and Computer Science 5, no. 3 (2017): 636. http://dx.doi.org/10.11591/ijeecs.v5.i3.pp636-642.

Full text
Abstract:
A design of novel bendable Artificial Magnetic Conductor (AMC) structures has been presented in this paper in two selected of frequencies at 5G application. These designs started with a square patch shape and continued with the combination of circular and Jerusalem shape which resonate at a frequency of 18 GHz and 28 GHz. Details of the theory and the structures of AMCs are explained. The reflection phase, bandwidth, angular stability and dispersion diagram were studied. The simulated results plotted that the novel AMC has good bandwidth and size is reduced by 53 percent and 55 percent for both frequencies. Other than that, it is also proved that the novel AMC has a stable reflection phase and no band gap performs at the specific frequency. The good performances of this novel AMC make it useful in order to improve antenna’s performance.
APA, Harvard, Vancouver, ISO, and other styles
3

Luo, Guo Qing, Zheng Zheng Song, Xiao Hong Zhang, and Xiao Ping Hu. "Millimeter Wave on Chip Antenna Using Dogbone Shape Artificial Magnetic Conductor." International Journal of Antennas and Propagation 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/743649.

Full text
Abstract:
An artificial magnetic conductor (AMC) applied in millimeter wave on chip antenna design based on a standard 0.18 μm CMOS technology is studied. The AMC consisting of two-dimensional periodic dogbone shape elements is constructed at one metal layer of the CMOS structure. After its performance has been completely investigated, it has been used in an on chip dipole antenna design as an artificial background to enhance efficiency of the dipole antenna. The result shows that 0.72 dB gain has been achieved at 75 GHz when the AMC is constructed by a 4*6 dogbone array.
APA, Harvard, Vancouver, ISO, and other styles
4

Li, Lin, Xue-Xia Yang, Geliang Zhu, Qi Luo, and Steven Gao. "Compact high efficiency circularly polarized rectenna based on artificial magnetic conductor." International Journal of Microwave and Wireless Technologies 11, no. 9 (2019): 975–82. http://dx.doi.org/10.1017/s1759078719000448.

Full text
Abstract:
AbstractA compact circularly polarized (CP) rectenna with low profile and high efficiency based on the artificial magnetic conductor (AMC) is proposed in this paper. The receiving CP antenna is a coplanar stripline fed dual rhombic loop with an AMC reflector. The proposed AMC reflector not only improves the antenna gain to 9.8 dBi but also decreases the profile to 0.1 λ0. The AMC reflector also makes the antenna have a harmonic suppression function so the low pass filter between the rectifying circuit and the antenna could be omitted and the rectenna has a compact structure. According to the measured results, the rectenna has the highest conversion efficiency of 76% on the load of 240 Ω with the received power of 117.5 mW. When the linearly polarized transmitting antenna is rotated, the conversion efficiency of the CP rectenna maintains a constant high conversion efficiency of 74%. The compact structure and CP operation of the rectenna made it a good candidate of the wireless battery for some electronic devices and far-distance microwave power transmission.
APA, Harvard, Vancouver, ISO, and other styles
5

Bahari, Norfatihah, Mohd Faizal Jamlos, and Muammar Mohamad Isa. "Gain enhancement of microstrip patch antenna using artificial magnetic conductor." Bulletin of Electrical Engineering and Informatics 8, no. 1 (2019): 166–71. http://dx.doi.org/10.11591/eei.v8i1.1409.

Full text
Abstract:
The paper presents an artificial magnetic conductor (AMC) structure to enhance the gain of the double microstrip patch antenna. By placing this kind of metamaterial in between the two Rogers RT5880 substrates, the antenna achieved lots of improvement especially in terms of size miniaturization, bandwidth, return loss, gain and efficiency. The antenna is intended to operate at 16 GHz where the prospect fifth generation (5G) spectrum might be located. Integration of AMC structure into the proposed antenna helps to improve nearly 16.3% of gain and almost 23.6% of size reduction.
APA, Harvard, Vancouver, ISO, and other styles
6

Md Ali, Siti Adlina, Maisarah Abu, and Siti Normi Zabri. "Improvements of trapezoid antenna gain using artificial magnetic conductor and frequency selective surface." Indonesian Journal of Electrical Engineering and Computer Science 20, no. 1 (2020): 281. http://dx.doi.org/10.11591/ijeecs.v20.i1.pp281-286.

Full text
Abstract:
<span>This paper presents the performance enhancement of the trapezoid antenna with Artificial Magnetic Conductor (AMC) and Frequency Selective Surface (FSS). The antenna, AMC and FSS structures are printed on 0.254 mm of RT/Duroid 5880 high frequency laminate. The performances of the antenna with and without AMC and FSS were evaluated. Three cases are analyzed; antenna alone, antenna with AMC and antenna with AMC-FSS. The 2x3 arrays of AMC and AMC-FSS were positioned at the back of the antenna with 6 mm air gap. The antenna alone works at 12 GHz, and shifted to 12.35 GHz and 12.33 GHz for case 2 and case 3, respectively. Despite the shift in the resonance, the antenna is still operating well at 12 GHz with a return loss –16.70 dB for case 2 and–16.84 dB for case 3. Case 3 effectively enhanced the antenna gain from 4.43 dB to 6.74 dB and contributed to a directive antenna. Moreover, case 3 also successfully reduced the radiation of the antenna that penetrates into human body as the antenna is applied for on-body applications. </span>
APA, Harvard, Vancouver, ISO, and other styles
7

Kwon, Oh Heon, Won Bin Park, Juho Yun, Hong Jun Lim, and Keum Cheol Hwang. "A Low-Profile HF Meandered Dipole Antenna with a Ferrite-Loaded Artificial Magnetic Conductor." Applied Sciences 11, no. 5 (2021): 2237. http://dx.doi.org/10.3390/app11052237.

Full text
Abstract:
In this paper, a low-profile HF (high-frequency) meandered dipole antenna with a ferrite-loaded artificial magnetic conductor (AMC) is proposed. To operate in the HF band while retaining a compact size, ferrite with high permeability is applied to the unit cell of the AMC. The operating frequency bandwidth of the designed unit cell of the AMC is 1.89:1 (19–36 MHz). Thereafter, a meandered dipole antenna is designed by implementing a binary genetic algorithm and is combined with the AMC. The overall size of the designed antenna is 0.06×0.06×0.002 λ3 at the lowest operating frequency. The proposed dipole antenna with a ferrite-loaded AMC is fabricated and measured. The measured VSWR bandwidth (<3) covers 20–30 MHz on the HF band. To confirm the performance of the antenna, a reference monopole antenna which operates on the HF band was selected, and the measured receiving power is compared with the result of the proposed antenna with the AMC.
APA, Harvard, Vancouver, ISO, and other styles
8

Chang, Ki-Hun, Ji-Hwan Ahn, and Young-Joong Yoon. "Artificial Magnetic Conductor(AMC) Polarizer Backed Circular-Polarized(CP) Antenna." Journal of Korean Institute of Electromagnetic Engineering and Science 21, no. 5 (2010): 459–67. http://dx.doi.org/10.5515/kjkiees.2010.21.5.459.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Dewan, Raimi, M. K. A. Rahim, M. R. Hamid, H. A. Majid, M. F. M. Yusoff, and M. E. Jalil. "Reconfigurable antenna using capacitive loading to Artificial Magnetic Conductor (AMC)." Microwave and Optical Technology Letters 58, no. 10 (2016): 2422–29. http://dx.doi.org/10.1002/mop.30062.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Dewan, Raimi, M. K. A. Rahim, Mohamad Rijal Hamid, and M. F. M. Yusoff. "Analysis of Wideband Antenna Performance over Dual Band Artificial Magnetic Conductor (AMC) Ground Plane." Applied Mechanics and Materials 735 (February 2015): 273–77. http://dx.doi.org/10.4028/www.scientific.net/amm.735.273.

Full text
Abstract:
A Coplanar Waveguide (CPW) wideband antenna operates from 2.69 GH to 6.27 GHz which act as reference antenna (RA) has been designed. A Dual Band AMC (DBAMC) unit cells have been proposed to operate at 2.45 GHz and 5.8 GHz. AMC is a metamaterial which mimics the behavior of zero reflection phase of Perfect Magnetic Conductor (PMC) at resonance frequency which not naturally existed in nature. Subsequently the antenna is incorporated with AMC unit cell, herein referred as Antenna with Dual Band AMC (ADBAMC). The DBAMC succesfully excites additional resonance at 2.45 GHz outside the initial operating range of standalone CPW wideband antenna. Incorporation of DBAMC to antenna achieves back lobe suppression at 2.45 GHz and 5.8 GHz. The overall average gain of AMC incorporated antenna is improved from 2.69 to 6.29 GHz as opposed to the standalone reference CPW wideband antenna. Study of surface current is also presented and discussed.
APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Artificial magnetic conductor (AMC)"

1

Kostka, Darryl. "Enhancement of printed inductors using artificial magnetic conductor (AMC) surfaces for millimeter-wave applications." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40815.

Full text
Abstract:
Integrated inductors are one of the most basic elements used in the design of modern electronic systems. However, they generally suffer from poor quality and are inherently area intensive, thus limiting system performance and prove to be a bottleneck for compact system integration. Several research efforts have been devoted to the development of miniaturized, high quality inductors. One such method proposes the use of an Artificial Magnetic Conductor (AMC) surface to enhance the inductor performance by creating a second inductive region thereby enabling inductor reuse. It can theoretically be shown, through image theory, that an AMC reflector can be used to effectively double the inductance of an inductor component. Accordingly, in order to validate this concept, two AMC surface designs are investigated for both on-chip and PCB-based implementations. The designed AMC surfaces are then integrated with standard loop inductor components in order to justify their performance benefits through measurement results of the fabricated prototypes. Finally, the practicality of this approach is demonstrated through the application of mm-wave VCOs by replacing a standard LC-VCO tank inductor with a miniaturized AMC-backed inductor. In order to do so, mm-wave LC-VCO prototypes are designed, fabricated and characterized through measurements.<br>Les inducteurs intégrés sont parmi les éléments élémentaires les plus utilisés dans la conception de systèmes électroniques modernes. Cependant, ils souffrent généralement d’une faible qualité et d’une large consomption d’espace, limitant ainsi les performances du système et compliquent donc l’intégration de systèmes compactes. Plusieurs efforts en recherche ont été consacrés au développement d’inducteurs de haute qualité miniatures. Une de ces méthodes proposent l’utilisation d’un Conducteur Magnétique Artificiel (CMA) comme surface pour améliorer la performance de l’inducteur en créant une deuxième région inductive ainsi permettant la réutilisation de l’inducteur. Il peut être démontré théoriquement, par la théorie des images, qu’un réflecteur CMA peut être utilisé pour doubler l’inductance total d’un inducteur. Par conséquent, afin de valider ce concept, deux designs de surfaces CMA sont investigués pour l’intégration sur puce (on-chip) et sur carte (PCB). Les surfaces CMA sont ensuite intégrées avec des composantes d’inducteurs en boucle standards afin de justifier leurs avantages en termes de performances par les résultats expérimentaux obtenus par ces prototypes. Finalement, le caractère pratique de cette approche est démontré par l’application d’un Oscillateur (VCO) d’ondes-mm en remplaçant le réservoir-LC par une version miniaturisée d’un inducteur par CMA. Pour ce faire, les prototypes d’Oscillateur-LC à ondes-mm sont conçus, fabriqués et caractérisé de façon expérimentale.
APA, Harvard, Vancouver, ISO, and other styles
2

Almutawa, Ahmad Tariq. "Log-Periodic Microstrip Patch Antenna Miniaturization Using Artificial Magnetic Conductor Surfaces." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/2982.

Full text
Abstract:
Microstrip patch antennas are attractive for numerous military and commercial applications due to their advantages in terms of low-profile, broadside radiation, low-cost, low-weight and conformability. However, the inherent narrowband performance of patch antennas prohibits their use in systems that demand wideband radiation. To alleviate the issue, an existing approach is to combine multiple patch antennas within a log-periodic array configuration. These log-periodic patch antennas (LPMAs) are capable of providing large bandwidths (>50%) with stable broadside radiation patterns. However, they suffer from electrically large sizes. Therefore, their miniaturization without degrading the bandwidth performance holds promise for extending their use in applications that demand conformal and wideband installations. In recent years, electromagnetic band gap structures have been proposed to enhance the radiation performances of printed antennas. These engineered surfaces consist of a periodic arrangement of unit cells having specific metallization patterns. At particular frequencies, they provide a zero-degree phase shift for reflected plane waves and effectively act as high impedance surfaces. Since, their band-limited electromagnetic field behavior is quite similar to a hypothetical magnetic conductor; they are also referred to as artificial magnetic conductors (AMCs). AMC structures were shown to allow lower antenna profile, larger bandwidth, higher gain, and good unidirectional radiation by alleviating the field cancellation effects observed in ground plane backed antenna configurations. Previous research studies have already demonstrated that microstrip patch antennas can enjoy significant size reductions when placed above the AMC surfaces. This project, for the first time, investigates the application of AMCs to LPMA configurations. Specifically, the goal is to reduce the LPMA size while retaining its highly desired large bandwidth performance. To accomplish this, we employ various AMC surface configurations (e.g. uniform, log-periodic) under traditional LPMAs and investigate their performance in terms of miniaturization, bandwidth, gain, and radiation patterns.
APA, Harvard, Vancouver, ISO, and other styles
3

Presse, Anthony. "Conception d'antennes souples et de conducteurs magnétiques artificiels en bande UHF." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S087/document.

Full text
Abstract:
L'invention de l'antenne fût à la base de la création des communications sans fil à l'orée du XXe siècle. A l'origine des objets métalliques destinés à transmettre et recevoir des ondes électromagnétiques, les antennes n'ont cessé de se complexifier pour satisfaire l'impressionnant développement des communications sans fil. C'est dans ce contexte qu'est né le concept d'antenne « wearable » il y a moins de deux décennies ouvrant un nouveau champ de recherche sur les antennes souples. C'est dans ce cadre que ce travail de thèse se consacre à la conception d’antennes souples en bande UHF.Une première étude a permis de concevoir une antenne Vivaldi antipodale [150 - 900 MHz] souple pour la Section Technique de l'Armée de Terre. Six de ces antennes sont destinées à être placées sous un ballon gonflé à l'hélium pour réceptionner des signaux RF.Une seconde étude est effectuée en collaboration avec la société Syrlinks et le CNES. L'objectif du projet est de concevoir des antennes souples pour le suivi de personnes avec le système ARGOS (401 et 466 MHz). La solution retenue est une PIFA planaire de largeur inférieure à lambda/3. Elle a l'avantage d'être fine et légère. Le matériau souple employé est un caoutchouc silicone sélectionné parmi plusieurs matériaux souples grâce à des caractérisations diélectriques. Cependant, le problème de cette antenne est qu'elle possède un rayonnement quasi-omnidirectionnel. Etant donné qu'il n'était pas envisageable d'utiliser un plan réflecteur métallique pour des raisons de dimensions, il a été décidé de concevoir un conducteur magnétique artificiel (CMA) souple. Toutefois, la conception de CMA dans le bas de la bande UHF se heurte à des difficultés de miniaturisation. Pour contourner ce problème, il a été développé deux concepts de CMA à cellules unitaires de faibles dimensions devant la longueur d'onde. La première solution utilise des capacités interdigitées et la seconde une structure double couche. Pour ces deux concepts, un modèle circuit est proposé et validé par des mesures expérimentales. Les mesures de l'association CMA - antenne montrent une bande passante suffisante pour des applications ARGOS et un rayonnement majoritairement dirigée dans la direction opposé à celle du CMA<br>The invention of antennas was the base of wireless communications appearance at the dawn of the twentieth century. Originally metal objects for transmitting and receiving electromagnetic waves, antennas have steadily become more complex to meet the impressive development of wireless communications. It is in this context that the concept of wearable antennas was born less than two decades ago opening a new field of research namely flexible antennas. It is in this framework that this thesis is dedicated to the design of flexible antennas for UHF band.A first study enabled the design of a flexible antipodal Vivaldi antenna [150-900 MHz] for Technical Section of the Army. Six of these antennas are intended to be placed under a balloon inflated with helium for receiving RF signals.A second study was conducted in collaboration with the company Syrlinks and CNES. The objective of the project is to design flexible antennas for tracking people with ARGOS system (401 and 466 MHz). The selected solution is a planar PIFA which width is smaller than lambda/3. This antenna has the advantage of being thin and light. The flexible material used is a silicone rubber and it was selected among several others due to some dielectric characterizations. However, the drawback of this antenna is that it has a quasi-omnidirectional radiation pattern. Since it was not possible to use a reflector metal plane due to size constraints, it was decided to design a flexible artificial magnetic conductor (AMC). However, the design of AMCs in the lower UHF band is challenged with the miniaturization difficulties. Two concepts of small size (compared to the wavelength) AMCs unit cells were developed to work around this problem. The first solution uses interdigitated capacitors and the second a double layer structure. For these two concepts, a circuit model is proposed and validated by experimental measurements. The measurement of the AMC associated antenna demonstrates a bandwidth sufficient for ARGOS applications and a radiation pattern mostly directed in the direction opposite to that of the AMC
APA, Harvard, Vancouver, ISO, and other styles
4

Guo, Yunchuan. "Analysis and design of novel electromagnetic metamaterials." Thesis, Loughborough University, 2006. https://dspace.lboro.ac.uk/2134/7864.

Full text
Abstract:
This thesis introduces efficient numerical techniques for the analysis of novel electromagnetic metamaterials. The modelling is based on a Method of Moments modal analysis in conjunction with an interpolation scheme, which significantly accelerates the computations. Triangular basis functions are used that allow for modelling of arbitrary shaped metallic elements. Unlike the conventional methods, impedance interpolation is applied to derive the dispersion characteristics of planar periodic structures. With these techniques, the plane wave and the surface wave responses of fractal structures have been studied by means of transmission coefficients and dispersion diagrams. The multiband properties and the compactness of the proposed structures are presented. Based on this method, novel planar left-handed metamaterials are also proposed. Verifications of the left-handedness are presented by means of full wave simulation of finite planar arrays using commercial software and lab measurement. The structures are simple, readily scalable to higher frequencies and compatible with low-cost fabrication techniques.
APA, Harvard, Vancouver, ISO, and other styles
5

Kristou, Nebil. "Étude et conception de métamatériaux accordables pour la miniaturisation d’antennes aux fréquences micro-ondes." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1S016/document.

Full text
Abstract:
Les antennes présentes dans la plupart des systèmes communicants comme les véhicules automobiles, les avions et les trains se multiplient et sont soumises à une contrainte d’intégration de plus en plus sévère. De nombreuses techniques de miniaturisation d’antennes existent et passent toutes par un compromis entre la taille et les performances (bande passante et/ou rendement de rayonnement). Pour les systèmes cités ci-dessus, les antennes sont souvent placées devant ou à proximité d’un réflecteur métallique (toit de véhicule, carlingue d’aéronef). Dans ce cas, l’épaisseur de système antennaire est une contrainte majeure et les métamatériaux de type Conducteur Magnétique Artificiel (CMA) ouvrent des perspectives intéressantes grâce à leurs propriétés électromagnétiques non conventionnelles. Cependant, pour les applications sub-GHz (RFID, LTE, PMR…), les CMA sont limités par les dimensions des cellules unitaires nécessaires à leur mise en œuvre (λg/4) ainsi que leur bande réduite de fonctionnement. Réduire leurs dimensions permet de rendre leur utilisation compatible avec le contexte des antennes miniatures intégrées. Ajouter l’agilité fréquentielle permet de palier le problème de la bande passante réduite dans le cas des antennes et des CMA miniaturisés en ajustant le fonctionnement du système antennaire sur une large bande passante. Cette thèse de doctorat propose d’étudier et de développer un nouveau système antennaire à faible profil composé d’une antenne miniature associée à une métasurface compacte reconfigurable en fréquence et compatible avec le standard NB-IoT dans la bande basse LTE (700 MHz – 960 MHz)<br>Antennas are now very integrated in several connected systems like cars, airplanes and trains. Many antenna miniaturization techniques exist and all go through a compromise between size and performance (bandwidth and/or radiation efficiency). For the systems mentioned above, the antennas are often placed near a metallic reflector (vehicle roof, aircraft cabin). Within this context, Artificial Magnetic Conductors (AMC) present an attractive reflector for low profile antennas which can take advantage of intrinsic zero reflection phase response to boost antenna performance without the need for thick quarter wave backplane. However, for sub-GHz applications (RFID, LTE, PMR ...), AMC are limited by the size of the unit cells necessary for their implementation (λg/4) as well as their reduced operating bandwidth. AMC miniaturization makes their use compatible with small antennas. Adding tunability restores the possibility of adjusting the operating frequency over a large bandwidth. This PhD thesis proposes to study and develop a new electrically small, low-profile antenna based on miniaturized and tunable AMC for the NB-IoT standard in low LTE band (700 MHz – 960 MHz)
APA, Harvard, Vancouver, ISO, and other styles
6

Silva, Pimenta Marcio. "Antennes souples à base de métamatériaux de type conducteurs magnétiques artificiels pour les standards de systèmes de géolocalisation." Phd thesis, Université Nice Sophia Antipolis, 2013. http://tel.archives-ouvertes.fr/tel-00923200.

Full text
Abstract:
Grâce aux progrès réalisés ces dernières années dans la conception de réseaux intelligents, tels que les réseaux centrés sur la personne (WBAN) ou les réseaux sans fils de proximité (WPAN), de nouveaux types d'applications émergent et utilisent des capteurs d'informations capables de relever les paramètres physiologiques, environnementaux et plus particulièrement le positionnement des personnes. Dans ce cadre, nous nous sommes attachés dans ce travail de recherche à la conception et la réalisation d'antennes en polarisation circulaire pouvant être intégrées dans des vêtements, pour les standards de géolocalisation européen Galiléo et Américain GPS. Nous avons utilisé pour ces antennes des structures métamatériaux de type conducteurs magnétiques artificiels, afin d'augmenter les performances en rayonnement et pour diminuer le couplage avec et le corps humain. Une autre voie explorée est l'utilisation d'antennes patchs qui sont de nature faible encombrement. La bande de fréquence du standard de communications par satellite Iridium étant très proche du standard de géolocalisation GPS, nous avons trouvé intéressant de développer une solution de type patch couvrant les deux bandes GPS (1,575 GHz) et Iridium (1,621 GHz). L'antenne devant être intégrée sur une boite crânienne, les niveaux de débit d'absorption spécifique et les modifications du rayonnement sous conformation de l'antenne ont également été étudiés. L'évolution de ce travail a été ensuite d'étudier le comportement de cette antenne posée sur le dessus d'un casque militaire français. Les performances en rayonnement ont été satisfaisantes et ont montré la possibilité d'une telle application.
APA, Harvard, Vancouver, ISO, and other styles
7

Visser, Hugo Hendrik. "An artificial magnetic ground-plane for a log-periodic antenna." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4176.

Full text
Abstract:
Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: This paper presents the implementation of an artificial magnetic ground-plane with a low profile Log-periodic Dipole Array (LPDA) antennas. After the properties of three typical Electromagnetic Bandgap (EBG) structures are investigated and their bandwidth properties are studied, a mechanism is presented to improve the band-width over which the EBG surface acts as a perfect magnetic conductor (PMC). A low profile LPDA is modeled above this surface and the results indicate an improved band-width region. Compared with a LPDA in free space the frequency band is shifted higher by the EBG surface and the gain pattern is shifted from a horizontal orientation to a vertical orientation.<br>AFRIKAANSE OPSOMMING: Hierdie dokument stel voor die implementering van kunsmatige magnetiese grondvlakke met Logaritmiese Periodiese Dipool Samestelling (LPDS) antennas. Die eienskappe van drie tipiese Elektromagnetiese Bandgaping (EBG) strukture word ondersoek en hul bandwydte eienskappe word bestudeer. ’n Meganisme word voorgestel om die bandwydte te verbeter waar die EBG oppervlakte soos n perfekte magnetiese geleier optree. ’n Lae profiel LPDS word bo hierdie oppervlakte geplaas. Die resultate dui aan ’n verbetering in the bandwydte. In vergelyking met ’n LPDS in vrye ruimte skuif die frekwensie band ho¨er as gevolg van die EBG oppervlakte en die aanwins patroon skuif van ’n horisontale orientasie na ’n vertikale orientasie.
APA, Harvard, Vancouver, ISO, and other styles
8

Wang, Shenhong. "High-gain planar resonant cavity antennas using metamaterial surfaces." Thesis, Loughborough University, 2006. https://dspace.lboro.ac.uk/2134/12481.

Full text
Abstract:
This thesis studies a new class of high gain planar resonant cavity antennas based on metamaterial surfaces. High-gain planar antennas are becoming increasing popular due to their significant advantages (e.g. low profile, small weight and low cost). Metamaterial surfaces have emerged over the last few years as artificial structures that provide properties and functionalities not readily available from existing materials. This project addresses novel applications of innovative metamaterial surfaces on the design of high-gain planar antennas. A ray analysis is initially employed in order to describe the beamfonning action of planar resonant cavity antennas. The phase equations of resonance predict the possibility of low-profile/subwavelength resonant cavity antennas and tilted beams. The reduction of the resonant cavity profile can be obtained by virtue of novel metamaterial ground planes. Furthermore, the EBG property of metamaterial ground planes would suppress the surface waves and obtain lower backlobes. By suppressing the TEM mode in a resonant cavity, a novel aperture-type EBG Partially Reflective Surface (PRS) is utilized to get low sidelobes in both planes (E-plane and H-plane) in a relatively finite structure. The periodicity optimization of PRS to obtain a higher maximum directivity is also investigated. Also it is shown that antennas with unique tilted beams are achieved without complex feeding mechanism. Rectangular patch antennas and dipole antennas are employed as excitations of resonant cavity antennas throughout the project. Three commercial electromagnetic simulation packages (Flomerics Microstripes ™ ver6.S, Ansoft HFSSTM ver9.2 and Designer ™ ver2.0) are utilized during the rigorous numerical computation. Related measurements are presented to validate the analysis and simulations.
APA, Harvard, Vancouver, ISO, and other styles
9

Ayad, Houssam. "Antenna Performance Control using Metamaterials." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENT013/document.

Full text
Abstract:
Le travail de cette thèse est en rapport avec les métamatériaux et ses applications. Tout d’abord, un état de l’art est dressé en présentant leur évolution depuis leur apparition en 19ème siècle jusqu’au nos jours. Les notions sur les milieux chirale, bi-anisotrope, cristaux photoniques et quelques applications dans ces milieux sont données. Ensuite, nous présentons les équations classiques de Maxwell dans les milieux complexes. L’effet bi-anisotrope dans les métamatériaux est ensuite validé par l’extraction des paramètres caractéristiques du matériau main gauche (LHM). La validation a été faite en utilisant deux types différents du résonateur avec inclusion (SRR). Les métamatériaux sont également étudiés comme des cristaux photoniques quand les dimensions utilisées sont de l’ordre de la longueur d’onde correspondant.De plus, les résonateurs SRR et multi-SRR sont analysés du point de vue analytique et électromagnétique afin d’extraire leur fréquence de résonance. Par conséquent, ces composants peuvent être introduits dans différents types de conception; La surface conductrice magnétique artificielle (AMC) illustre un cas explicite et efficace de ces derniers. Une antenne dipôle, placée sur cette surface à la place d’un plan de masse conventionnel, a été étudiée comme une application des métamatériaux. Les résultats relatifs sur la directivité, le gain et le coefficient de réflexion montrent une nette amélioration. Une antenne multi-bandes, comme une autre application des métamatériaux, a également été conçue et simulée. Le résonateur SRR est inséré dans l’antenne de départ afin de créer une autre résonance, et par conséquent une autre bande est ainsi créée<br>The work in this thesis deals with metamaterials, its components and applications. A historical overview about these materials, features and researches in the domain are presented. Chiral media, binaisotropic materials and photonic crystals are also studied in order to visualize physics behind metamaterials.Electromagnetic properties in complex media are widely investigated. Starting from Maxwell’s equations, bi-anisotropic materials and their effect are deeply analyzed whereas two types of Split Ring Resonator (SRR) are treated to determine constitutive parameters of Left Handed Materials (LHM). The metamaterials are also studied as photonic crystals since the effective medium approach is not applicable when the dimensions of the inclusions tend to the operating wavelength.Moreover, SRRs and Multi SRRs are synthesized analytically and electromagnetically in order to extract their resonant frequencies. Consequently, these components could be introduced in any design; Artificial Magnetic Conductor (AMC) surface is an efficient case. Thus, a low profile antenna positioned over such surface is examined as an application of metamaterials. The results of directivity, gain and reflection coefficient are of great importance and affirm the employing of metamaterials in such applications. A dual band PCB antenna, as another application of metamaterials, is designed and simulated. The SRR element studied in the previous chapters is used as the trap which inserted in the arm of the antenna in order to create another resonance, and consequently another band is created
APA, Harvard, Vancouver, ISO, and other styles
10

Meng, Fanhong. "Développement d’antennes à base de structures métamatériaux pour les applications aéronautiques (GPS/DME, bande L) et de communications haut débit (en bade E – 80 GHz)." Thesis, Paris 10, 2015. http://www.theses.fr/2015PA100203.

Full text
Abstract:
Les travaux présentés dans ce manuscrit sont relatifs à la conception et au développement d’antennes basées sur les structures artificielles – métamatériaux. La première antenne conçue et réalisée est une antenne bi-fonction en bande L (~1GHz) (GPS et DME) à diversité de bande/de polarisation, destinée aux applications aéronautiques. Ces travaux rentrent dans le cadre du projet MSIE (pôle de compétitivité ASTHEC) pour lequel notre LEME a été très actif. Les partenaires industriels de ce projet sont EADS/IW, Dassault aviation, INEO-Défense, SATIMO. Les résultats montrent la faisabilité d’une antenne unique pouvant avoir simultanément deux fonctions avec une diversité de polarisation et de bande spectrale. L’utilisation des métamatériaux a permis en particulier le maintien de la polarisation circulaire de l’antenne GPS -L1 à L5. La fonction DME a été consolidée avec le maintien de son gain. La seconde antenne est une antenne cavité Fabry-Pérot mettant en œuvre une structure partiellement réfléchissante double couche. Nous avons démontré le phénomène physique d’inversion de la phase du coefficient de réflexion de la PRS. Nous avons obtenu un gradient positif de phase sur une bande de 5 GHz autour de 80GHz. Grace à ce profil nouveau de la phase obtenu par la structure métamatériau PRS, on dispose d’une avance linéaire de la phase qui compense le retard du à la cavité Fabry-Pérot. Ainsi on maintient les conditions de résonance de la cavité sur une large bande, 5GHz. Nous démontrons, que la mise en œuvre de cette structure aux caractéristiques inédites permet de réaliser une antenne cavité ultra-directive sur une très large bande spectrale de 5GHz. Les performances atteintes sont une directivité de 35 à 40dBi sur 5 GHz, une adaptation parfaite (gain ~ directivité) avec très peu de sources primaires. L’antenne est compacte avec une hauteur totale inférieure au 10mm (connecteur compris) et une surface de 100mmx100mm<br>The work presented in this manuscript is related to the design and development of antennas based on artificial structures - metamaterials. The first designed and built antenna is a GPS and DME dual-function in the L (~ 1GHz). It is an antenna designed with polarization and spectral diversities for aeronautical applications. The work is within the MSIE project of ASTHEC cluster for which our laboratory (LEME) was very active. The industrial partners of the project are EADS/IW, Dassault Aviation, INEO-Defense SATIMO. The results show the feasibility of a single antenna having simultaneously two functions with a diversity of polarization and spectral band. The use of metamaterials enabled in particular the preservation of circular polarization of the GPS antenna on the bands ranging from L1 to L2. The DME function was consolidated with the same gain.The second antenna is an antenna Fabry-Perot cavity employing a partially reflective structure (PRS) Double-layer. We have demonstrated by numerical simulation and experimental characterization, the physical phenomenon of inversion phase of the reflection coefficient PRS. We obtain a positive gradient of the phase over a broad band of 5 GHz around 80GHz. Thanks to this new profile obtained by the PRS metamaterial structure, it has a linear advance of the phase which compensates for the delay of the Fabry-Perot cavity. Thus the cavity resonance conditions are maintained over a wide band, 5GHz. We demonstrate that the implementation of this structure with unique features allows a highly directive antenna cavity over a very wide spectral band 5GHz. The performance are a directivity of 35-40 dBi over 5 GHz, a perfect adaptation (gain ~ directivity) with very few primary sources
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Artificial magnetic conductor (AMC)"

1

Kassim, S., Hasliza A. Rahim, Mohamedfareq Abdulmalek, et al. "UWB Antenna with Artificial Magnetic Conductor (AMC) for 5G Applications." In Lecture Notes in Networks and Systems. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3172-9_24.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Dewan, R., M. K. A. Rahim, M. R. Hamid, et al. "Dual Band Stacked Artificial Magnetic Conductor with Dipole Antenna." In Theory and Applications of Applied Electromagnetics. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17269-9_21.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Panda, Prakash Kumar, and Debalina Ghosh. "High Gain Slot Antenna by Using Artificial Magnetic Conductor." In Lecture Notes in Networks and Systems. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2774-6_34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kumar, Ashok, Amrita Dixit, Ashok Kumar, and Arjun Kumar. "Studies of Various Artificial Magnetic Conductor for 5G Applications." In Lecture Notes in Electrical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2926-9_57.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Madhav, B. T. P., T. V. Rama Krishna, K. Datta Sri Lekha, et al. "Multiband Semicircular Planar Monopole Antenna with Spiral Artificial Magnetic Conductor." In Lecture Notes in Electrical Engineering. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7329-8_61.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Girish, K. B. N., Pani Prithvi Raj, M. Vijaya Krishna Teja, S. Anand, and D. Sriram Kumar. "A Novel Proposal of Artificial Magnetic Conductor Loaded Rectangular Patch Antenna for Wireless Applications." In Lecture Notes in Electrical Engineering. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2728-1_43.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Kumar, Ashok, Arjun Kumar, Ashok Kumar, and M. V. Karthikeyan. "Design and Investigation of Octagonal Patch Antenna Using Artificial Magnetic Conductor for 5G Applications." In Lecture Notes in Electrical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2926-9_44.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Kim, S., B. S. Cook, J. R. Cooper, and M. M. Tentzeris. "Inkjet-Printed Artificial Magnetic Conductors (AMC) for Wearable Antenna Applications." In Innovation in Wearable and Flexible Antennas. WIT Press, 2014. http://dx.doi.org/10.2495/978-1-84564-986-9/004.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Diaz, Rodolfo E., and Sergio A. Clavijo. "Artificial Magnetic Conductor." In Encyclopedia of RF and Microwave Engineering. John Wiley & Sons, Inc., 2005. http://dx.doi.org/10.1002/0471654507.eme551.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Artificial magnetic conductor (AMC)"

1

Dewan, Raimi, and Mohamad Kamal A. Rahim. "Antenna performance enhancement with Artificial Magnetic Conductor (AMC)." In 2015 IEEE Conference on Antenna Measurements & Applications (CAMA). IEEE, 2015. http://dx.doi.org/10.1109/cama.2015.7428141.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Soh, Ping Jack, Sen Yan, and Guy A. E. Vandenbosch. "SAR mitigation of textile antenna via an artificial magnetic conductor (AMC) plane." In 2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC). IEEE, 2015. http://dx.doi.org/10.1109/ursi-at-rasc.2015.7303228.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Mumin, Abdul Rashid O., Qazwan Abdullah, Abbas Ugurenver, et al. "Design A Compact Artificial Magnetic Conductor (AMC) For SAR Reduction in WBAN Applications." In 2021 1st International Conference on Emerging Smart Technologies and Applications (eSmarTA). IEEE, 2021. http://dx.doi.org/10.1109/esmarta52612.2021.9515722.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Dewan, R., M. K. A. Rahim, M. R. Hamid, N. A. Samsuri, and B. D. Bala. "Analysis of triple band artificial magnetic conductor (AMC) band conditions to wideband antenna performance." In 2014 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE). IEEE, 2014. http://dx.doi.org/10.1109/apace.2014.7043770.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Goodwill, Kumar, Vibha Tripathi, and M. V. Kartikeyan. "RCS reduction using aperiodic modulated artificial magnetic conductor." In 2017 IEEE Applied Electromagnetics Conference (AEMC). IEEE, 2017. http://dx.doi.org/10.1109/aemc.2017.8325730.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Nguyen, Khac Son, Thuan Bui Bach, Manh Cuong Bui, et al. "Genetic Programming for automated Synthesizing 3D Artificial Magnetic Conductor." In 2020 International Conference on Advanced Technologies for Communications (ATC). IEEE, 2020. http://dx.doi.org/10.1109/atc50776.2020.9255428.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Hiroshi Kubo, Atsushi Matsumoto, and Atsushi Sanada. "Parallel conductor particle for artificial magnetic material in microwave frequency." In 2006 Asia-Pacific Microwave Conference. IEEE, 2006. http://dx.doi.org/10.1109/apmc.2006.4429598.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Chen, Dongxu, Wenquan Che, and Wanchen Yang. "High-efficiency microstrip patch antennas using non-periodic artificial magnetic conductor structure." In 2015 Asia-Pacific Microwave Conference (APMC). IEEE, 2015. http://dx.doi.org/10.1109/apmc.2015.7411678.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Huang, Hao Tian, Bo Yuan, Xiao Hong Zhang, Zhi Fang Hu, and Guo Qing Luo. "A circular ring-shape monopole on-chip antenna with artificial magnetic conductor." In 2015 Asia-Pacific Microwave Conference (APMC). IEEE, 2015. http://dx.doi.org/10.1109/apmc.2015.7413137.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hui Chu, Lu Qingyuan, and Yong-Xin Guo. "60-GHz broadband CMOS on-chip antenna with an artificial magnetic conductor." In 2016 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP). IEEE, 2016. http://dx.doi.org/10.1109/imws-amp.2016.7588396.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography