Premium
A compact UWB CPW bandpass filter with short‐ended H‐shaped resonator and controllable notched band
Author(s) -
Wang Kai,
Wong Sai Wai,
Chu QingXin
Publication year - 2013
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.27663
Subject(s) - band pass filter , coplanar waveguide , passband , microstrip , resonator , stub (electronics) , stopband , microwave , optoelectronics , materials science , electrical impedance , electronic engineering , electrical engineering , physics , engineering , telecommunications
An ultra‐wideband (UWB) bandpass filter (BPF) using the hybrid microstrip and coplanar waveguide (CPW) structure is proposed in this article.The BPF composes of CPW feed lines and H‐shaped microstrip resonator. By a CPW/microstrip back‐to‐back coupling structure, the UWB BPF was realized with the passband covering the entire UWB band (3.1–10.6 GHz). A narrow notched band achieved by etching slots on the lower impedance part of the H‐shaped resonator to form an open circuit stub. At last, three U‐slot DGSs are used to achieve a good upper‐stopband rejection. The measured results are in good agreement with the simulated results. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1577–1581, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27663