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Design for Frequency Tripler Using Novel Bandpass Filter with Low Insertion Loss  

Min, Jun-Ki (광운대학교 전파공학과 초고주파 연구실)
Cho, Seung-Yong (광운대학교 전파공학과 초고주파 연구실)
Kim, Hyun-Jin (광운대학교 전파공학과 초고주파 연구실)
Kim, Yong-Hwan (광운대학교 전파공학과 초고주파 연구실)
Lee, Kyoung-Hak (광운대학교 전자통신공학과)
Kim, Dae-Hee (광운대학교 전파공학과 초고주파 연구실)
Yun, Ho-Seok (광운대학교 전파공학과 초고주파 연구실)
Hong, Ui-Seok (광운대학교 전파공학과 초고주파 연구실)
Abstract
This paper proposes a novel BPF structure with less insertion loss and small size instead of the existing coupled line BPF for the output of the tripler using APDP (Anti-Parallel Diode Pair). This proposed BPF consists of the interdigital capacitor and spiral open stub. The proposed BPF has the insertion loss of less than 0.7dB within the band $(16.41{\sim}19.23GHz)$. The conversion loss of the tripler is about $16.6{\sim}18.5dB$ $(flatness<{\pm}1dB)$ at $5.72{\sim}6.28GHz$ of fundamental frequency. Its fundamental frequency and the fifth harmonic suppression characteristic at 6GHz are -32.16dBc and -44.6dBc, respectively And its phase noise attenuation characteristic is about 9.5dB at 100kHz.
Keywords
Small-size BPF; Insertion loss; Frequency Tripler;
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