a compact low insertion loss bandpass filter based on meandered self-coupled ring resonator
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ID: 160804
2017
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Abstract
The traditional structure of dual mode bandpass filter is formed by a circular or rectangular resonator, which causes excessive circuit areas to be occupied. A 5.2 GHz bandpass filter, based on the triple-branch self-coupled ring resonator, is designed to achieve most essential features such as low insertion loss, compact size, and wide stopband. The coupling of each coupled branch introduces the even- and odd-mode perturbation, which produce sharp bandpass and wide stopband responses due to the generation of band-edge transmission zeros. The simulation and measurement in this paper are respectively verified by using IE3D electromagnetic simulator and Agilent's HP8722C network analyzer. Experimental results show that the filter has 19.2% bandwidth centered at 5.2 GHz, 1.2 dB insertion loss, 25 dB stopband rejection from 6 to 9 GHz. Moreover, the circuit size in this paper has been down to 9×6 mm2 and can be applied to communication of microwave applications.
| Reference Key |
ching-chien2017mateca
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|---|---|
| Authors | ;Cheng Ching-Chien;Cheng Kong-Xin;Kung Huang-Kuang;Wang Chin-Yu;Jeng Yng-Huey |
| Journal | acta botânica brasílica |
| Year | 2017 |
| DOI |
10.1051/matecconf/201712300016
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| URL | |
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