期刊
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
卷 13, 期 12, 页码 517-519出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2003.819957
关键词
cross-coupled filter; magnetic cross coupling; quarter-wave resonator
A new class of coupling structure for cross-coupled filters with folded quarter-wave resonators is presented. The cross coupling mechanism is realized by magnetic coupling from the short ends of the resonator. The proposed magnetic coupling solves the problem of response limitation of folded quarter-wave resonator cross-coupled filters that were introduced previously using electrical cross coupling. Several quadruplet and trisection filters are proposed and fabricated. The measured results matched well with the theoretical prediction.
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