Premium
A compact sharp‐rejection lowpass filter
Author(s) -
Hung ChengYuan,
Weng MinHang,
Yang RuYuan
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.23224
Subject(s) - stopband , passband , elliptic filter , low pass filter , microwave , cutoff frequency , attenuation , transition band , physics , resonator , filter (signal processing) , high pass filter , electronic engineering , acoustics , materials science , engineering , optics , electrical engineering , prototype filter , band pass filter , telecommunications
Abstract In this article, a compact sharp‐rejection lowpass filter (SRLPF) is proposed and analyzed. By combining the coupled line section and shunt open‐circuited resonator, a compact lowpass filter with wide stopband and very high passband selectivity is realized. This filter at cutoff frequency f c of 2 GHz has presented very good measured characteristics, including very low insertion loss of 0.15 ± 0.05 dB, wide stopband from 3.2 to 8 GHz and attenuation slope of 51 dB/GHz. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 894–896, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23224