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Varactor‐tuned microstrip bandpass filter with wide tuning range
Author(s) -
Kim Jeongpyo,
Choi Jaehoon
Publication year - 2008
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.23745
Subject(s) - varicap , band pass filter , capacitor , microstrip , microwave , materials science , insertion loss , optoelectronics , resonator , filter (signal processing) , diode , electronic engineering , electrical engineering , capacitance , engineering , voltage , physics , telecommunications , electrode , quantum mechanics
In this study, a tunable bandpass filter with a hairpin line resonator and loading capacitors using varactor diodes was proposed. The filter was modified by adding varactor diodes to the coupling part to compensate for losses. The designed filter had a simple structure and the characteristics of wide tuning range of 87.9% from 430 to 1105 MHz and low insertion loss of less than 4.42 dB. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2574–2577, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23745