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Parallel coupled CPW filters for spurious band suppression
Author(s) -
FernándezPrieto Armando,
Martel Jesús,
Medina Francisco,
Mesa Francisco
Publication year - 2010
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.25135
Subject(s) - passband , coplanar waveguide , spurious relationship , microwave , strips , solver , electronic engineering , coupling (piping) , filter (signal processing) , enhanced data rates for gsm evolution , band pass filter , microstrip , engineering , physics , optoelectronics , materials science , computer science , electrical engineering , telecommunications , algorithm , mechanical engineering , machine learning , programming language
Modified coplanar waveguide (CPW) edge‐coupled band‐pass filters with floating conductor strips printed below the coupled‐line sections are proposed. These structures allow one to suppress the first undesired spurious passband associated with the nonhomogeneous nature of the dielectric in CPW structures. Also, tight coupling levels can be easily achieved. An optimization code based on a fast quasi‐TEM solver is used to optimize the dimensions of the filter sections, in such a way that final dimensions are obtained in less than 1 min. A couple of filters have been built and measured to illustrate the theory. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1094–1097, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25135