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首页> 外文期刊>Microwave and optical technology letters >HIGH PERFORMANCE TUNABLE BANDPASS FILTER WITH SEPARATELY RECONFIGURABLE PASSBAND EDGES
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HIGH PERFORMANCE TUNABLE BANDPASS FILTER WITH SEPARATELY RECONFIGURABLE PASSBAND EDGES

机译:高性能可调谐带通滤波器,带边可重新配置

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摘要

A high performance tunable bandpass filter (BPF) with separately reconfigurable passband edges is presented based on a novel varactor-tuned stepped-impendence stub-loaded resonator. The proposed resonator consists of three variable capacitors and a half wavelength resonator loaded with three stepped-impendence stubs symmetrically. Theoretical expressions have been derived for the resonant frequencies. Each passband edge can be reconfigured by adjusting capacitance values of the capacitors loaded on the stubs. High performances of the measured BPF are demonstrated, including low insertion loss (< 1.9 dB), good return loss (> 20 dB), a 16-49% fractional bandwidth tuning range and a wide upper stopband with better than 35 dB rejection. The proposed ideas are verified by the measured results. (C) 2015 Wiley Periodicals, Inc.
机译:基于新颖的变容二极管调谐的阶跃阻抗短截线加载谐振器,提出了一种具有可分别重新配置通带边缘的高性能可调谐带通滤波器(BPF)。所提出的谐振器由三个可变电容器和一个半波长谐振器组成,该谐振器对称地装有三个步进阻抗短截线。已经得出了共振频率的理论表达式。每个通带边缘可以通过调整负载在短截线上的电容器的电容值来重新配置。演示了所测得的BPF的高性能,包括低插入损耗(<1.9 dB),良好的回波损耗(> 20 dB),16-49%的分数带宽调谐范围以及宽泛的上阻带,具有优于35 dB的抑制性能。测量结果验证了所提出的想法。 (C)2015威利期刊公司

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