National Changhua University of Education Institutional Repository : Item 987654321/10291
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题名: Stepped Impedance Hairpin Design of a Tunable Bandpass Filter with Harmonic Suppression
作者: Chen, Y.-W.;Ho, Min-Hua
贡献者: 電子工程學系
关键词: Tunable filter;Stepped impedance hairpin;Harmonic suppression;Zero assignment
日期: 2006-04
上传时间: 2012-05-22T06:27:06Z
出版者: Wiley
摘要: Stepped impedance hairpin resonators (SIHRs) with harmonic suppression and capability of frequency tuning are incorporated into a bandpass filter design. A tapped-in U-shaped feed structure is introduced to suppress harmonics and to reduce the passband insertion losses. The passband flexibility is accomplished by using a pair of tuning varactors. A simple method to implant a zero in the frequency response is also studied herein to further deepen the passband skirt. A 176% (4.32 GHz) stopband bandwidth is observed under more than20-dB band rejection. A measured minimum insertion loss of 1.19 dB is observed for the circuit with absence of the tuning varactors. Using the varactors, this filter has achieved a 22% frequency tuning range with all the insertion losses less than 5 dB.
關聯: Microwave and Optical Technology Lett., 48(4): 697-701
显示于类别:[電子工程學系] 期刊論文

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