Design of Inductive-Coupled Bandpass Filter and Dual-mode Ring Filter on Ka-Band
碩士 === 國立臺灣大學 === 電信工程學研究所 === 90 === Filters play important roles on RF/microwave applications. Many emerging applications such as wireless communication systems call for stringent requirements-- smaller size, lower cost, narrower bandwidth and higher quality factors. Two structures of f...
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ndltd-TW-090NTU004350442015-10-13T14:38:19Z http://ndltd.ncl.edu.tw/handle/33066218396157671347 Design of Inductive-Coupled Bandpass Filter and Dual-mode Ring Filter on Ka-Band Ka頻段電感耦合型濾波器與雙模環形波濾波器之設計 Chun-Jen Tsai 蔡俊任 碩士 國立臺灣大學 電信工程學研究所 90 Filters play important roles on RF/microwave applications. Many emerging applications such as wireless communication systems call for stringent requirements-- smaller size, lower cost, narrower bandwidth and higher quality factors. Two structures of filters suitable for narrowband applications are investigated in this thesis and their characteristics of frequency responses are compared. For the first structure, coplanar waveguide is selected as the transmission line and shunt stubs are selected as impedance inverters to design the inductive-coupled bandpass filters on Ka-Band. Due to the removal of the gaps, it can exhibit lower radiation loss as compared with the commonly employed capacitive-coupled filters. The second structure is based on the dual-mode ring filter which has an excellent characteristic of the controllability for the attenuation frequency. Moreover, two kinds of implementation have been investigated and their frequency responses are compared. Finally, a simple way is proposed to achieve very sharp outband-rejection by cascading two kinds of ring filters with an impedance-matching transmission line. It has the performance of four-stage filter but occupies smaller size than others. Ruey-Beei Wu 吳瑞北 2002 學位論文 ; thesis 96 zh-TW |
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碩士 === 國立臺灣大學 === 電信工程學研究所 === 90 === Filters play important roles on RF/microwave applications. Many emerging applications such as wireless communication systems call for stringent requirements-- smaller size, lower cost, narrower bandwidth and higher quality factors. Two structures of filters suitable for narrowband applications are investigated in this thesis and their characteristics of frequency responses are compared.
For the first structure, coplanar waveguide is selected as the transmission line and shunt stubs are selected as impedance inverters to design the inductive-coupled bandpass filters on Ka-Band. Due to the removal of the gaps, it can exhibit lower radiation loss as compared with the commonly employed capacitive-coupled filters. The second structure is based on the dual-mode ring filter which has an excellent characteristic of the controllability for the attenuation frequency. Moreover, two kinds of implementation have been investigated and their frequency responses are compared. Finally, a simple way is proposed to achieve very sharp outband-rejection by cascading two kinds of ring filters with an impedance-matching transmission line. It has the performance of four-stage filter but occupies smaller size than others.
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author2 |
Ruey-Beei Wu |
author_facet |
Ruey-Beei Wu Chun-Jen Tsai 蔡俊任 |
author |
Chun-Jen Tsai 蔡俊任 |
spellingShingle |
Chun-Jen Tsai 蔡俊任 Design of Inductive-Coupled Bandpass Filter and Dual-mode Ring Filter on Ka-Band |
author_sort |
Chun-Jen Tsai |
title |
Design of Inductive-Coupled Bandpass Filter and Dual-mode Ring Filter on Ka-Band |
title_short |
Design of Inductive-Coupled Bandpass Filter and Dual-mode Ring Filter on Ka-Band |
title_full |
Design of Inductive-Coupled Bandpass Filter and Dual-mode Ring Filter on Ka-Band |
title_fullStr |
Design of Inductive-Coupled Bandpass Filter and Dual-mode Ring Filter on Ka-Band |
title_full_unstemmed |
Design of Inductive-Coupled Bandpass Filter and Dual-mode Ring Filter on Ka-Band |
title_sort |
design of inductive-coupled bandpass filter and dual-mode ring filter on ka-band |
publishDate |
2002 |
url |
http://ndltd.ncl.edu.tw/handle/33066218396157671347 |
work_keys_str_mv |
AT chunjentsai designofinductivecoupledbandpassfilteranddualmoderingfilteronkaband AT càijùnrèn designofinductivecoupledbandpassfilteranddualmoderingfilteronkaband AT chunjentsai kapínduàndiàngǎnǒuhéxínglǜbōqìyǔshuāngmóhuánxíngbōlǜbōqìzhīshèjì AT càijùnrèn kapínduàndiàngǎnǒuhéxínglǜbōqìyǔshuāngmóhuánxíngbōlǜbōqìzhīshèjì |
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