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A new harmonic-suppressed tunable microstrip-ring bandpass filter

✍ Scribed by Hyun-Joo Park; Ji-Yong Park; Jong-Chul Lee; Jong-Heon Kim; Byungje Lee; Nam-Young Kim

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
173 KB
Volume
30
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A new bandpass filter that is composed of two‐stage microstrip‐ring resonators with a center frequency of 5.775 GHz and a bandwidth of 100 MHz is presented in this paper. For the suppression of unnecessary harmonics, low‐pass filters are integrated into a microstrip‐ring resonator. A harmonic suppression ratio of about 35 dB for this structure is obtained. Also, a varactor‐tuned microstrip‐ring bandpass filter with harmonic suppression is suggested, and an insertion loss of 6 dB and a tuning bandwidth of 450 MHz are obtained. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 30: 26–29, 2001.

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