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Modified maximally flat parallel‐coupled lines for band‐pass filter applications and miniaturizations
Author(s) -
Liu JiChyun,
Zeng BingHao,
Chang JunMao,
Chien ChiHsun,
Chang ChungChi,
Chang DauChyrh
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.23243
Subject(s) - resonator , microwave , insertion loss , materials science , coupling (piping) , filter (signal processing) , optoelectronics , band pass filter , reduction (mathematics) , electronic engineering , symmetry (geometry) , topology (electrical circuits) , physics , electrical engineering , engineering , telecommunications , mathematics , geometry , composite material
Abstract The modified configurations of maximally flat parallel‐coupled lines (MF‐PCL) structure are introduced to improve the performance of the conventional MF‐PCL resonator. To obtain a higher rejection (−39 dB), symmetry response, wider band (BW about 32%), and less insertion loss (−0.4 dB) filters at central frequency 5.78 GHz, the modified MF‐PCL resonators by using enhanced coupling techniques are proposed herein. The size reduction of 50% is achieved. Results including surface current distributions and frequency responses are presented and discussed. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 902–906, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23243