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Coplanar Waveguide Reconfigurable Bandpass Filter Based on A Varactor Loaded Colinear Resonator
Author(s) -
Wang Zhengpeng P.,
Hall Peter S.,
Kelly James,
Gardner Peter
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27832
Subject(s) - varicap , band pass filter , coplanar waveguide , passband , materials science , optoelectronics , insertion loss , resonator , microwave , waveguide filter , butterworth filter , capacitance , filter (signal processing) , prototype filter , electronic engineering , low pass filter , electrical engineering , physics , engineering , telecommunications , electrode , quantum mechanics
This article reports a novel coplanar waveguide varactor‐tuned bandpass filter based on a colinear resonator. The equivalent circuit of the new filter is analyzed. The passband of the filter can be tuned from 0.68 to 1.37 GHz by varying the capacitance of the varactor diode. The insertion loss of this filter changes from 0.9 to 1.3 dB across the tuning range. The 3‐dB bandwidth changes from 141 to 153 MHz as the filter is tuned from 0.68 to 1.18 GHz. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2389–2393, 2013