Premium
A class of novel compact filters with quasi‐hairpin structure using stepped‐impedance resonators
Author(s) -
Liao ShrySann,
Chen HsienKu,
Liao HsienYuan,
Chang YinCheng
Publication year - 2005
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.20787
Subject(s) - resonator , band pass filter , stub (electronics) , electronic engineering , microwave , electrical impedance , prototype filter , distributed element filter , engineering , electrical engineering , optoelectronics , low pass filter , topology (electrical circuits) , filter (signal processing) , physics , telecommunications
A class of novel compact filters with quasi‐hairpin structure using stepped‐impedance resonators (SIRs) is presented. The SIR open stub is used as the loaded structure for the filter design with the merit of small size and sharp transition band (TB). Additionally, these filters achieve sharp TB for lowpass filters (LPFs) and improved selectivity for bandpass filters (BPFs) at 2.45 GHz. All of the filters retain the dimensions of the circuit by more than 60%, as compared to the conventional one. These filters are very useful for applications in wireless‐communication systems. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 251–255, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20787