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Novel Ultra‐Wideband Filter Using Coplanar‐Waveguide‐To‐Microstrip Transition and Stubs
Author(s) -
Sun Xiaofeng,
Tan Eng Leong
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.27870
Subject(s) - coplanar waveguide , microstrip , microwave , cutoff frequency , electronic engineering , ultra wideband , wideband , filter (signal processing) , shunt (medical) , optoelectronics , waveguide filter , materials science , engineering , computer science , low pass filter , telecommunications , electrical engineering , prototype filter , medicine , cardiology
This letter presents a novel ultra‐wideband (UWB) filter using coplanar‐waveguide (CPW)‐to‐microstrip transition and stubs. The proposed filter is implemented by the CPW series stubs and microstrip shunt stubs. The transition includes a via that not only connects the series and shunt stubs but also can improve the out‐of‐band rejection. The proposed filter has been analyzed, verified, and fabricated. Both simulation and measurement results demonstrate the higher rejection cutoff frequencies above 18 GHz. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2269–2271, 2013