Premium
Low‐spurious‐response coaxial‐line BPF with saucer‐loaded stepped‐impedance resonators designed with mode‐matching technique
Author(s) -
Uchida Hiromitsu,
Ohwada Tetsu,
Yoneda Naofumi,
Takeuchi Norio,
Miyazaki Moriyasu,
Konishi Yoshihiko
Publication year - 2004
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20006
Subject(s) - band pass filter , resonator , spurious relationship , coaxial , center frequency , electrical impedance , frequency response , acoustics , microwave , impedance matching , classification of discontinuities , physics , frequency band , electronic engineering , materials science , electrical engineering , engineering , computer science , optics , bandwidth (computing) , telecommunications , mathematics , mathematical analysis , machine learning
A novel stepped‐impedance resonator with a thin metal saucer is proposed in order to reduce spurious‐response levels in a coaxial‐line bandpass filter (BPF). In designing the BPF, the mode‐matching technique is employed for fast and accurate calculation of coaxial‐line discontinuities. A prototype BPF obtains a spurious‐response level of less than −55 dB in the frequency band from 2 f 0 to 9 f 0 , where f 0 is the pass‐band center frequency. © 2004 Wiley Periodicals, Inc. Int J RF and Microwave CAE 14: 227–235, 2004.