Extended-stopband bandpass filter using both half- and quarter-wavelength resonators

Shih Cheng Lin, Yo Shen Lin, Chun Hsiung Chen

研究成果: 雜誌貢獻期刊論文同行評審

41 引文 斯高帕斯(Scopus)

摘要

A novel quasielliptic microstrip bandpass filter (BPF) using both half- and quarter-wavelength resonators is proposed. With the quarter-wavelength (λ/4) resonators placed in the interstage, the filter spurious passband can be pushed up to 3 f 0 where f 0 stands for the passband center frequency. To improve the stopband characteristics, a modified stopband-extended filter is implemented, utilizing the multiple transmission zeros placed at specified frequencies to achieve good frequency selectivity and out-of-band rejection. The modified filter provides a 22.5-dB rejection level from 1.14 f 0 to 5.2 f 0.

原文???core.languages.en_GB???
頁(從 - 到)43-45
頁數3
期刊IEEE Microwave and Wireless Components Letters
16
發行號1
DOIs
出版狀態已出版 - 1月 2006

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