Design of Quad-Channel Diplexer and Tri-band Bandpass Filter Based on Multiple-Mode Stub-Loaded Resonators
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Date
2019-04
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Mark
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Společnost pro radioelektronické inženýrství
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Abstract
Multiple-mode stub-loaded resonator with quad channel diplexer and tri-band bandpass filter are presented and analyzed theoretically in this paper. The multi-mode stub-loaded resonator employs the basic structure of a triple mode resonator. Herein, the triple-mode resonator is modified by introducing a mid-coupled line between the odd mode resonances to produce a quad-mode resonator. The proposed resonator is applied in the quad-channel diplexer design, composing of two independent dual-band bandpass filters. In turn, the triple-band bandpass filter based on a parallel quad-mode and a dual-mode stub-loaded resonator is developed. To validate the performance of the proposed resonators, two experimental examples, including a quad-channel diplexer and a triple-band bandpass filter are fabricated and measured. Each of the designed circuits occupies small area i.e. about 0.32lambda*0.22lambda and 0.18lambda*0.20lambda respectively. Good agreements between simulated and measured results are achieved.
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Citation
Radioengineering. 2019 vol. 28, č. 1, s. 129-135. ISSN 1210-2512
https://www.radioeng.cz/fulltexts/2019/19_01_0129_0135.pdf
https://www.radioeng.cz/fulltexts/2019/19_01_0129_0135.pdf
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Peer-reviewed
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Published version
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en