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RETRACTED: Reduced‐sized single coupled‐line low‐pass filter
Author(s) -
Tseng J.D.,
Chen P.S.
Publication year - 2007
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.22199
Subject(s) - transmission line , equivalent circuit , microwave , stub (electronics) , cutoff frequency , electrical impedance , electric power transmission , electronic engineering , electrical engineering , bandwidth (computing) , low pass filter , engineering , physics , filter (signal processing) , topology (electrical circuits) , telecommunications , voltage
A low‐pass filter consisted of one inner‐connected coupled‐line and two open‐stub transmission lines possessed quasi‐elliptic frequency response and wide rejection bandwidth is proposed. The analysis is based on transmission line and coupled‐line circuit model. Two‐port impedance matrices and a T‐type equivalent circuit were derived. On the basis of this equivalent circuit, a circuit with 3 dB cutoff frequency at 2.45 GHz were designed, simulated, and measured. The simulated and measured results are in good agreement within 0–12 GHz. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 612–615, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22199