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Dissertations / Theses on the topic 'Microstrip Bandpass Filter'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Kaveri, Srinidhi V. "Design of Tunable Edge Coupled Microstrip Bandpass Filters." DigitalCommons@USU, 2008. https://digitalcommons.usu.edu/etd/190.

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This thesis is a study of tunability of edge-coupled filters. Microstrip edge-coupled bandpass filters are planar structures and have advantages such as easy design procedures and simple integration into circuits. Three tuning techniques were implemented. The first technique involved the loading of one open end of each coupled into tunable capacitors. The second technique used a tunable resonator in series with the edge-coupled blocks. The final design made use of tunable feedback sections. A detailed mathematical analysis of each design was performed. MATLAB code based on the analyses was wri

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2

Chiang, Chun Pong. "Design of quasi-elliptic microstrip bandpass filter using terminated anti-parallel coupled-line structure." Thesis, University of Macau, 2007. http://umaclib3.umac.mo/record=b1937941.

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3

Farooqui, Muhammad Fahad. "Compact circularly polarized slot-ring antenna and microstrip bandpass filter using triangular open-loop resonators." Texas A&M University, 2006. http://hdl.handle.net/1969.1/4969.

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In this thesis two different research topics are undertaken, both in the area of compact RF/microwave circuits design. The first topic involves the design of a compact circularly polarized (CP) slot-ring antenna. A study of several compact CP microstrip and slotline antennas reported in the past has been carried out. In this research, a method of reducing the size of a printed slot-ring antenna is proposed. The reduction in size is achieved by introducing meandered-slot sections in the ring. Circular polarization is achieved by introducing an asymmetry, also a meandered-slot section, and feedi

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4

Hong, Sio Ian. "The microstrip parallel coupled-line bandpass filter with simultaneous dual-band response and bandwidth enhancement." Thesis, University of Macau, 2009. http://umaclib3.umac.mo/record=b2119530.

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5

Wang, Li Kang. "Design of ultra-wideabnd [sic] bandpass filter with reconfigurable bandwidth and notch using microstrip and slotline structure." Thesis, University of Macau, 2017. http://umaclib3.umac.mo/record=b3691126.

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6

Fok, Si Weng. "Low loss microstrip dual-mode bandpass filter design with simultaneous size reduction and spurious response suppression." Thesis, University of Macau, 2005. http://umaclib3.umac.mo/record=b1445846.

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7

Lu, Ting Shan. "A microstrip square-loop dual-mode balun-bandpass filter with simultaneous size reduction and spurious response suppression." Thesis, University of Macau, 2009. http://umaclib3.umac.mo/record=b2129882.

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8

Lemtiri, Chlieh Outmane. "Development of microfluidic packages on multilayer organic substrate for cooling and tuning RF circuits." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54376.

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The objective of this PhD research was to design and implement novel microfluidic radio-frequency (RF) structures on multilayer organic substrates for cooling and tuning purposes. The different designs were implemented to target applications up to C-band (4 GHz – 8 GHz) frequencies. The system-on-package (SoP) solution adopted throughout this work is well adapted for such designs where there is a need to integrate the functionality of different sub-components into a single hybrid fully packaged system. The first part of the thesis is dedicated to the study of a specific liquid cooling scheme u

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Cross, Lee W. "Design of Microwave Front-End Narrowband Filter and Limiter Components." Thesis, The University of Toledo, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3588122.

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<p> This dissertation proposes three novel bandpass filter structures to protect systems exposed to damaging levels of electromagnetic (EM) radiation from intentional and unintentional high-power microwave (HPM) sources. This is of interest because many commercial microwave communications and sensor systems are unprotected from high power levels. Novel technologies to harden front-end components must maintain existing system performance and cost. The proposed concepts all use low-cost printed circuit board (PCB) fabrication to create compact solutions that support high integration.</p><p> Th

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10

U-yen, Kongpop. "Microwave filters with high stop-band performance and low-loss hybrid developement." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-11162006-111102/.

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Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2007.<br>Tentzeris, Manos, Committee Member ; Wollack, Edward, Committee Member ; Cressler, John, Committee Member ; Papapolymerou, Ioannis, Committee Chair ; Laskar, Joy, Committee Co-Chair ; Ayazi, Farrokh, Committee Member.

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11

Akra, Mirna. "Etude de filtres RF planaires miniatures. Amélioration de la réjection hors-bande et accordabilité." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT024/document.

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Le but de ce travail était de développer des filtres passe-bande RF dans la technologie de PCB, avec trois objectifs principaux. Le premier objectif était de développer des formules de synthèse tosimplify la procédure de conception du filtre. Le deuxième était de parvenir à un rejet wideout bande sans modifier les caractéristiques de la bande de filtrage. Le troisième objectif est de contrôler la fréquence centrale du filtre en utilisant diode varicap<br>The purpose of this work was to develop RF bandpass filters in PCB technology,with three main objectives. The first objective was to develop

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12

Vágner, Petr. "MIKROPÁSKOVÉ FILTRY S VYUŽITÍM NARUŠENÉ ZEMNÍ PLOCHY." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233479.

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The thesis deals with the microstrip filter design using defected ground structure (DGS). The difference between standard asymmetric microstrip technique and DGS is in using the structures etched in the microwave substrate ground plane. The DGS resonant characteristics are then used in filter design. The thesis consists of three factual parts. The first one (chapter 4) introduces the use of the DGS resonators in the lowpass filter design. It involves experimental analysis of one type of the lowpass filter. The second part (chapter 5) deals with a novel microstrip lowpass filter design method u

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13

Ara?jo, Tiago Costa de. "Estudos e projetos de filtro interdigital em microfita para aplica??o pr?tica ao transponder do sat?lite ITASAT." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15402.

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Made available in DSpace on 2014-12-17T14:55:58Z (GMT). No. of bitstreams: 1 TiagoCA_DISSERT.pdf: 3801367 bytes, checksum: 9225a3c3c8dc4d02582f66bec6b853a7 (MD5) Previous issue date: 2012-05-07<br>This work shows a theoretical analysis together with numerical and experimental results of transmission characteristics from the microstrip bandpass filters with different geometries. These filters are built over isotropic dielectric substrates. The numerical analysis is made by specifical commercial softwares, like Ansoft Designer and Agilent Advanced Design System (ADS). In addition to these tool

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14

HASSAN, HAMID ALI. "Design & Size Reduction analysis of Microstrip Hairpin Bandpass Filters." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-19134.

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This thesis presents Design, Measurement and analysis for size reduction of the Coupled line micro strip Hairpin band pass filters (MHBPF’s). Hairpin filters are an interesting topic for microwave designers. These planar circuits are widely used in wireless transceivers and other microwave projects due to an easy design process. The filter design and analysis described in this paper can be used for wireless transceivers as well as for microwave links. Two techniques have been employed for the size reduction and four different filters have been designed. 1st Technique, Conventional Hairpin conf

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15

Fox, Alan Sherwood. "An enhanced design procedure for microstrip band pass filters." Thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-05022009-040349/.

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16

Reppel, Michael. "Novel HTS microstrip resonator configurations for microwave bandpass filters." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=960169245.

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17

Fong, Lin Sung, and 林松鋒. "Investigation of Microstrip Interdigital Bandpass Filter." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/60763703422265815940.

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碩士<br>樹德科技大學<br>電腦與通訊研究所<br>92<br>In the RF front-end of a modern communication system, bandpass filters with wide stopband and high selectivity are usually required to enhance the overall circuit performance. In the thesis, the interdigital structure is primarily concerned in process of investigating arts of the bandpass filter. To approach perfect bandpass filter response, several kinds of improved structures are demonstrated. The creation of multiple transmission zeros are required in achieving the characteristic of high selectivity. Based on that, the filters with using tapped line are int

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18

Wu, Ping-Hao, and 伍秉豪. "Design of Multi-mode Microstrip Bandpass filter." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/82925934847584920044.

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碩士<br>義守大學<br>電機工程學系碩士班<br>99<br>In this thesis, dual-mode bandpass filters have been implemented by utilizing triangular patch and spur-line structures. The dual-mode filters are realized by utilizing the isosceles triangular patch to split two degenerate modes of the equilateral triangular patch. Further the two identical triangular patch resonator for the combined,and design two filters with different structures by 50 ohm transmission line with feed position.By the test results of area,we can found the triangular band-pass filter with feed from bottom is better than another.Then analyze cha

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Tsai, Bo-Jiun, and 蔡博鈞. "Wideband Parallel-Coupled Microstrip Bandpass Filter Design." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/86717451850291638606.

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碩士<br>國立聯合大學<br>電子工程學系碩士班<br>101<br>Microwave filter design frequently uses a lumped-element lowpass prototype, and a series of skills of transformation and approximation are then applied to achieve a distributed circuit that is suitable for layout realization. During the design process, filter’s design specifications are degraded,especially filter bandwidth. In order to enhance the bandwidth forecast, new method was proposed in a literature to reduce the shrinkage of bandwidth, and it was applied for the design of wideband parallel-coupled microstrip bandpass filter. In this paper, the propos

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20

Wu, Meng-Hsiu, and 吳孟修. "Microstrip Dual-Band Bandpass Filter With Extended Stopband." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/72359142648364699909.

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碩士<br>國立交通大學<br>電信工程研究所<br>99<br>A new circuit structure is proposed for design of dual-band bandpass filters with extended upper stopband. This circuit consists of two parts: one is the main circuit having a coupled-line section of long, and the other is a sub-circuit feed-in the middle of the main circuit, where is the wavelength at arithmetic mean frequency of the two passbands. Analysis of the circuit is formulated by the transmission line theory, and design curves for dual-band response circuit are provided to allocate the positions of transmission poles and transmission zeros, th

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21

Chang, Po-Ying, and 張博奕. "Research of Microstrip Coupled-Line Bandpass Filter and Diplexer." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/43258530698022243721.

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碩士<br>國立中央大學<br>電機工程研究所<br>95<br>In this study, several kinds of microstrip coupled-line structures are used to implement compact bandpass filters, which are based on quarter-wavelength resonators. Compared to the conventional parallel-coupled bandpass filters that are based on half-wavelength resonators, the circuit size of proposed filters are reduced by more than half. The passband of proposed coupled-line filter can be made switchable by a proper circuit layout along with the incorporation of diodes to change the resonance characteristics of quarter-wavelength resonators. An on-off isolati

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22

Wu, Meng-huan, and 吳孟桓. "Microstrip Parallel-Coupled Line Bandpass Filter with Multispurious Suppression." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/68223203762633307525.

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碩士<br>國立交通大學<br>電信工程系所<br>94<br>The inherent zero of a microstrip coupled stage near twice the design frequency (2fo) is found tunable by varying its coupling length. This zero is used to suppress the unwanted response of paralle-coupled line filters at this frequency. The above idea is extended to design over-coupled middle stages of the filter for the spurious |S21| peaks at 3fo and 4fo, so that the upper stopband can be greatly enhanced to 5fo. The passband preserves a response as good as the traditional design. Measured results have a good agreement with simulation data and show that the i

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23

Chu, Pei Cheng, and 朱沛承. "Response Symmetry in Stopband of Microstrip Quadruplet Bandpass Filter." Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107CGU05428003%22.&searchmode=basic.

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24

Chen, Pow-Wen, and 陳柏彣. "The Novel Bandpass Filter Designs Using the Microstrip Line Structure." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/55574604069610218619.

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碩士<br>國立彰化師範大學<br>電信工程研究所<br>96<br>Abstract In this thesis, multi-band microwave bandpass filters (BPFs) designed using cross-coupled stepped-impedance resonators (SIRs) were studied. Three microwave filters,including two dual-band and one single-band BPFs were designed, implemented, andinvestigated. The first dual-band BPF circuit consists of λ/2 and λ/4 stepped impedance resonators (SIRs) for the WLAN applications. The filter covers both the operating frequencies of 2.45 GHz and 5.2-5.8 GHz. The doubly parallel-coupling mechanism is used in the filter design to reduce the insertion losses an

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25

Lin, Ting-Yu, and 林庭裕. "Design of Microstrip Bandpass filter With a Multi-band Response." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/24863790611514751290.

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碩士<br>義守大學<br>電機工程學系碩士班<br>99<br>In this thesis, Novel Microwave dual-band bandpass filters (BPF) are analyzed and designed for multi-band communication system. Utilizing the coupled stepped-impedance resonators (SIR) and defected ground structure (DGS). The resonator structure of coupling filter use stepped impedance resonator (SIR) and with modulation of the impedance ratio of the resonators for harmonics is controlled, the dual-band effect is obtained and with parallel-coupling structure to compare for transmission zero and reject bandwidth. In this case, coupling coefficient not only retre

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Wang, Chung-Pei, and 王仲培. "Microstrip Parallel-Coupled Line Bandpass Filter with Multi-Spurious Suppression." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/14419500417500641115.

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碩士<br>國立交通大學<br>電機學院碩士在職專班電信組<br>98<br>In this thesis, two-stage microstrip bandpass filters are designed to have a relatively wide stopband. The input/ output stages are designed to create a transmission zero to suppress the second harmonic. The coupled section of resonators is designed to generate a transmission zero to suppress the third harmonic. In addition, open stubs are added to suppress the fourth harmonic. For reducing the circuit size, a substrate with Er = 10.2 and thickness h = 1.27mm is used. This structure has two zeros beside passband which caused by symmetric tapped in or skew

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Chang, Yi-Ming, and 張益銘. "A Microstrip Wiggly-Coupled Bandpass Filter With Spurious Passbands Suppression." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/56513293316489424071.

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碩士<br>國立中正大學<br>電機工程研究所<br>90<br>In this thesis, a new microstrip wiggly-coupled bandpass filter is proposed for suppression of multiple out-of-band spurious passbands. The filter is composed of squarely-wiggled parallel-coupled lines with tapped input and output sections. The wiggly line compensates the phase velocity difference between the even mode and odd mode such that the second spurious passband can be effectively eliminated. The input and output feeding-points are appropriately tapped from the first and last filter section respectively that extra attenuation poles can be generated at t

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Chen, Yih-Dar, and 陳奕達. "Wide-Band and Harmonic-Suppressed SIR-DGS Microstrip Bandpass Filter." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/9npr42.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>105<br>With a fast development of wireless communication systems, data-transfer rates are increased sharply via some technologies including high frequency and antenna arrays. However, there are several challenges such as limited bandwidth where the interferences between the transmitting and receiving bands need to be reduced and miniaturized for portable devices where the components inside the devices need to have high accuracy and good qualities. Passive filters are key components of communications systems for eliminating the received noised levels and interference

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Jung, Dong Jin. "Compact Microstrip Filter Designs and Phased Array for Multifunction Radar Applications." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10931.

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This dissertation mainly discuses various microstrip bandpass filter (BPF) designs. The filter designs include: a coupled line BPF using nonuniform arbitrary image impedances, miniaturized BPF utilizing dumbbell shaped slot resonator (DSSR), BPF employing isosceles triangle shaped patch resonator (ITSPR), BPF with a complimentary split ring resonator (CSRR) and triple-band BPF (TBBPF). In the coupled line BPF designs, a capacitive gap-coupled BPF and parallel coupled line BPF are introduced, where two different arbitrary image impedances are applied for the designs. Based on the proposed equiv

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30

Hsieh, Wei-Lin, and 謝蔚霖. "Miniature Filter and Microwave Bandpass Filters Constructed with Symmetrical or Asymmetrical Compact Microstrip Resonators." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/69784111348994491807.

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碩士<br>長庚大學<br>電子工程研究所<br>94<br>The thesis is composed of two part. The first study present a Ku-band bandpass filter designed and fabricated with a commercial CMOS technology. The filter utilizes a π-network coupling structure to construct the desired coupling and the resonant tanks on Si substrate with a compact size and the low-loss performance. A 17GHz filter chip was fabricated by 0.18μm CMOS technology. The size of filter is 0.56mm×0.6mm and the measured pass-band insertion loss of filter is about 3.2dB. The second study present a method of synthesizing microwave filters consisting of com

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Wang, Jr-Chin, and 王智勤. "2.4GHz MICROSTRIP BANDPASS FILTER ON Al2O3 SUBSTRATE BY THIN-FILM TECHNOLOGY." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/77241222144671165907.

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碩士<br>樹德科技大學<br>電腦與通訊研究所<br>93<br>Abstract This article is uses the Al2O3 of the high dielectric constant to use the thin-film technology to make out 2.4GHz band-pass filter, because Al2O3 belongs to material of dielectric constant, it may cause microwave original parts better microminiaturization. By using in the semiconductor process regulation the etching technology and the metal thin-film technology;therefore, may able to make microwave integrated circuit, and it microwave integrated circuit, so it has advantage in miniaturization. Also, it is able to accumulates between the general semic

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Wu, Chia-ming, and 吳嘉明. "Study of the Multiple-Band Bandpass Filter with Microstrip Line Techniques." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/87116158421696286646.

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碩士<br>逢甲大學<br>資訊電機工程碩士在職專班<br>96<br>The dual-band (2.4/5.2GHz) and triple-band (0.9/2.4/3.6GHz) bandpass filters are proposed in this thesis for wireless communication applications. The filters had been realized by couple line filter with stepped impedance resonator (SIR) structure. Several techniques are used to improve the performance of filter. A new coupling scheme (U-Shaped coupling) at the input and output of the filter with increases the impedance of microstrip line greatly enhances the coupling degree, so that improve the issue of spacing too small at the input and output of the filter

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Tu, Su-Wei, and 涂秀薇. "The Optimum Design of Two Layout T-type Microstrip Bandpass Filter." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/38113528295027329511.

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碩士<br>樹德科技大學<br>電腦與通訊研究所<br>92<br>This thesis deals with how to design a two layers T-type microstrip bandpass filter and optimalize its performance .To reach filter this goad，several steps are set in this research. First，introduce IE3D simulator and descript all flow paths，commands，and core program in detail. Then analyze structure of a two layers T-type bandpass filter by using IE3D.All possible reasons for affecting the final performance are discussed. They include effect of T-type resonator，inverse U-type microstrip，double open stub and tap technology. Finally，the frequency response affect

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AWASTHI, SHRUTI. "DESIGN AND IMPLEMENTATION OF BANDPASS FILTER USING PARALLEL COUPLED RESONATOR." Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/14814.

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Band-pass filters play a vital role in wireless communication systems. Transmitted and received signals have to be filtered at a certain centre frequency with a specific bandwidth. Band-pass filters are used as frequency selective component in many RF and Microwave applications. There are several applications of a band-pass filter, for instance, at the receiver end it is used to eliminate the image frequency and to bandlimit the received signal. In the transmitter, they are used to reject the spurious signals generated by the local oscillator (LO). This project deals with the analysis, d

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Lin, Yong-Shun, and 林永順. "A Compact Parallel Coupled Microstrip Bandpass Filter Design with Arbitrary Coupled Length." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/47561338954481749850.

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碩士<br>國立交通大學<br>電信工程系<br>90<br>This thesis aims at designing microstrip bandpass filters with compact size. Coupled stages with folded lines are used. To make the effectiveness in reducing the circuit size as efficient as possible, both the width and gap of the coupled microstrip lines are chosen as small as possible. We analyze and compensate the folded resonators and coupled folded resonators, so that bandpass filters can be constructed with coupled multiple folded lines. A scheme for design coupled stages with an arbitrary coupled length is also incorporated into the design, for the conveni

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Huang, Chao-tsung, and 黃朝宗. "The Design and Fabrication of Adjustable Microstrip Bandpass Filter Using Slot Array." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/20591358036768970036.

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碩士<br>國立臺南大學<br>電機工程學系碩士班<br>100<br>Frequency-selective surfaces (FSS) is a periodic structure in two-dimensional space and it have been widely used in commercial communication applications. Based on slot ground defect design method, the filter can produce slow-wave effect to miniaturize component size. Such a structure can also increase spurious band suppression and provide flat stopband. In this paper, compact bandpass filters for Wireless Local Area Network (WLAN) and Industrial Scientific Medical (ISM) applications are successfully fabricated. A novel miniaturized adjustable dual-band filt

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Lai, Hsuan-Yu, and 賴宣宇. "Exploiting Transmission Zeros to Achieve Wide Stopband in Design Microstrip Bandpass Filter." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/15482654150318048525.

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碩士<br>國立中正大學<br>電機工程所<br>98<br>ABSTRACT In this thesis, we aim to design and develop a surface type microwave bandpass filter. Two different research efforts were explored towards designing a filter with Harmonic suppression. First was to exploit transmission zeros to design a single-band bandpass filter with wide stopband. Characteristic of such design is using a transmission line of 180-degree electrical length as its backbone, in addition to using parallel couple line with an open stub. In it, a symmetric coupled-line resonate was applied to generate resonate passband; thus a parallel cou

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Shu, Hsin Yi, and 許心怡. "Bandpass Filter Constructed with Asymmetrical Compact Microstrip Resonators and Dual-mode Ring Resonators." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/41807203892840972537.

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碩士<br>長庚大學<br>電子工程學研究所<br>97<br>In general, RF wireless signals transit in atmosphere. In order to reject unwanted radio waves or noises, a band-pass filter can be used to reject noise in stopband. Therefore, this paper presents two kinds of band-pass filter. The first one is an asymmetrical response band-pass filter with three transmission zeros, the design principle uses traditional π-network of second-order band-pass filter inductively coupled combining of capacitance to ground and coupling capacitance mechanisms to achieve the two lower bands and upper band zeros. The most important thing

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Chen, Wei-Ming, and 陳威銘. "Design and Fabrication of the Microwave Planar Bandpass Filter Using Microstrip Hairpin Resonators." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/06411998922212271732.

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碩士<br>國立成功大學<br>電機工程學系<br>87<br>Design and Fabrication of the Microwave Planar Bandpass Filter Using Microstrip Hairpin Resonators W. M. Chen* , C. L. Huang** , C. C. Wei** Department of Electrical Engineering National Cheng Kung University Tainan,Taiwan,R.O.C. ABSTRACT In the recent, miniature and low cost bandpass filters are very important in mobile communication systems. The planar filter structure is one of the possible choices for its compactness when realized with a high dielectric constant substract. In this paper,

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Teng, Chi-Huan, and 鄧跡寰. "Design of the Microstrip Couplers with Arbitrary Power Ratio and Microstrip Bandpass Filter with the Stepped Coupled Line." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/65560166977257394692.

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碩士<br>國立中正大學<br>電機工程研究所<br>101<br>This paper presents two designs. First, a novel design equations and examples of the modified arbitrary power ratio microstrip tandem coupler are presented. In order to obtain a wide passband, couplers with triple poles at the return loss are proposed. Compared to the conventional couplers such as Lange couplers and parallel coupled line couplers, high impedance transmission lines and narrow coupling gaps are not required for the proposed microstrip coupler. In terms of measured results, there is a wide bandwidth of more than 70%. Moreover, good agreement betw

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Kim, Chan Ho. "Reconfigurable Microstrip Bandpass Filters, Phase Shifters Using Piezoelectric Transducers, and Beam-scanning Leaky-wave Antennas." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10835.

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In modern wireless communication and radar systems, filters play an important role in getting a high-quality signal while rejecting spurious and neighboring unwanted signals. The filters with reconfigurable features, such as tunable bandwidths or switchable dual bands, also play a key part both in realizing the compact size of the system and in supporting multi-communication services. The Chapters II-IV of this dissertation show the studies of the filters for microwave communication. Bandpass filters realized in ring resonators with stepped impedance stubs are introduced. The effective locatio

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李宣融. "Ultra-Wideband Bandpass Filter with Wide Stopband using Microstrip-to-CPW Broadside Coupled Structure." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/04580562265682243695.

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碩士<br>國立交通大學<br>電信工程研究所<br>98<br>A new ultra-wideband bandpass filter structure with a wide upper stopband is proposed in this thesis. The microstrip-to-CPW with broadside coupling is designed to realize the input and output stages. To obtain a wide upper stopband, a lowpass or a bandstop filter is cascaded and placed in the middle of the input and output stages. By applying the proposed cascaded structure, the second resonant frequency of the broadside coupling structures can be suppressed. The microwave characteristics of the broadside coupled structure and the lowpass or bandstop stages wil

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Chen, Chih-Chen, and 陳志誠. "Resonant Characteristics of Stub-Loaded Microstrip Resonator and Its Application to Bandpass Filter Design." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/62102053282868060290.

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碩士<br>國立交通大學<br>電信工程系所<br>95<br>Parallel-coupled line bandpass filters and quasi-elliptic function bandpass filters are synthesized based on stub-loaded resonators. The open stub behaves as a capacitor which can be trimmed to produce resonators with the same fundamental frequency, but different higher order resonant frequencies. The resonators with staggered higher order frequencies are integrated in a single filter to achieve multispurious suppression in upper stupband. The tapped open stubs can also introduce an attenuation pole and a transmission zero to design a tripple-mode resonator and

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Lewis, Brian Patrick. "Study of Compact Tunable Filters Using Negative Refractive Index Transmission Lines." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9262.

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Today's microwave circuits, whether for communication, radar, or testing systems, need compact tunable microwave filters. Since different microwave circuit applications have radically different size, power, insertion loss, rejection, vibration, and thermal requirements, new filter technologies with different balances between these requirements are always desirable. Negative Refractive Index (NRI) transmission media was discovered 10 years ago with the unique property of negative phase propagation. A literature review was conducted to identify potential NRI methods for filters and other devi

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Leon and 李喆龍. "The technique to suppress the second harmonic of microstrip bandpass filter with Split Ring Resonators." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/97026361874382457090.

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碩士<br>樹德科技大學<br>電腦與通訊研究所<br>94<br>In the RF communicative world, the quality of wireless signals is key factor. The filters are a kind of important component application in the RF field. In this thesis, we used the physics technique “Split Ring Resonators (SRRs)” which is based on the “Dual –Mode Ring Resonator” structure application of RF filters, and suppressed the second harmonic successfully. Using the technique of Split Ring Resonators had many advantages. In this research we found the Split Ring Resonators were designed easily in many structures and didn’t change the major structure. The

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Jyun-ShuChen and 陳俊樹. "Design of Multi-Band Microstrip Bandpass Filter of Cross-Coupled Structure with Tunable Transmission Zeros." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/17111185885160679164.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>98<br>A multi-band microstrip band-pass filter using cross-coupled structure is presented in this paper. We investigated two kinds of multi-band microstrip band-pass filter structures ,including a dual-band filter and a tri-band filter. For the dual-band filter, we implemented the novel dual-band filters based on coupled open loop resonator and uniform impedance ring resonator with cross-coupled structure. The tri-band band-pass filter was referred to a periodic step impedance resonator structure with ring resonator. By using the theory of tri-section step impeda

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Lee, Lio, and 李相興. "Design of 2.4/5.2 GHz Dual-Band Bandpass Filter using Stub-Loaded Microstrip Line Resonator." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/77556323950340439939.

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碩士<br>長庚大學<br>電子工程學系<br>99<br>In recent years, the global communications market booming, a large number of microwave circuit technology has been applied in a wide range of communications systems. The composition of the basic elements of microwave circuits is RF amplifiers, filters, mixers and oscillators, and the filter. The role includes noise filtering, harmonic interference suppression, surge absorbers, power clean, and electromagnetic interference protection signal separation. In mobile phones, satellite communications, wireless LAN and other wireless communication products, communication

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王裕凱. "A miniaturized rectangular-profile microstrip bandpass filter enabled by triple-mode resonance for IEEE 802.11ac applications." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/40807013010093417459.

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LIN, YI-YUAN, and 林憶源. "Design of a Dual-Wideband Bandpass Filter and Microstrip Filtering Power Divider with Wide Dual-Passband." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/56kj69.

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碩士<br>國立中正大學<br>電機工程研究所<br>106<br>There are two part of this thesis had been presented. The first part is the design of the dual wideband bandpass filter at chapter 3. The design method is to explore the dual-path resonator of various electrical length combinations, then choosing those with broadband characteristics and suitable as dual-band pass filters, and using step impedance resonator to improve its return loss performance and bandwidth. Compared to the conventional dual-path resonant cavity combination, equal bandwidth and more compact size can be achieved. Then a transmission line is ad

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Rocha, Paulo R. F. "Design and implementation of microstrip filters for a radio over fiber network demonstrator." Master's thesis, 2010. http://hdl.handle.net/10400.1/1723.

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Dissertação de mest., Engenharia Eléctrica e Telecomunicações, Faculdade de Ciências e Tecnologia, Univ. do Algarve, 2010<br>The need for networks able of integrating services such as voice, video, data and mobility is growing. To satisfy such needs wireless networks with a high data transmission capacity are required. An efficient solution for these broadband wireless networks is to transmit radio signals to the Base Stations (BS) via optical fiber using Wavelength Division Multiplexing (WDM). The WDM usage helps this growing, allowing the use of a single optical fiber to feed several BSs us

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