High Selectivity Cascaded Quadruplet Bandpass Filter with Three Pairs of Transmission Zeros
A novel microstrip Cascaded quadruplet(CQ) bandpass filter using quarter wavelength resonators and three-quarter wavelength resonators is proposed.Based on cross coupling and source-load coupling,three pairs of finite transmission zeros are generated at the stopband.As a result,the out-of-band rejec...
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Published in | Chinese Journal of Electronics Vol. 26; no. 5; pp. 1101 - 1104 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Published by the IET on behalf of the CIE
01.09.2017
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Subjects | |
Online Access | Get full text |
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Summary: | A novel microstrip Cascaded quadruplet(CQ) bandpass filter using quarter wavelength resonators and three-quarter wavelength resonators is proposed.Based on cross coupling and source-load coupling,three pairs of finite transmission zeros are generated at the stopband.As a result,the out-of-band rejection can be enhanced and high selectivity is achieved.Based on the proposed structure,a cascaded quadruplet filter centering at 3.0GHz is designed and fabricated.Good agreement between the measured and simulated data is obtained. |
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Bibliography: | A novel microstrip Cascaded quadruplet(CQ) bandpass filter using quarter wavelength resonators and three-quarter wavelength resonators is proposed.Based on cross coupling and source-load coupling,three pairs of finite transmission zeros are generated at the stopband.As a result,the out-of-band rejection can be enhanced and high selectivity is achieved.Based on the proposed structure,a cascaded quadruplet filter centering at 3.0GHz is designed and fabricated.Good agreement between the measured and simulated data is obtained. Cascaded quadruplet(CQ) Bandpass filter Cross coupling Transmission zeros Microstrip 10-1284/TN |
ISSN: | 1022-4653 2075-5597 |
DOI: | 10.1049/cje.2017.07.017 |