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Closed‐form design method for broadband parallel‐coupled microstrip coupler with tight coupling and practical spacing
Author(s) -
Abbosh Amin M.
Publication year - 2011
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.26395
Subject(s) - broadband , microstrip , microwave , coupling (piping) , topology (electrical circuits) , electronic engineering , center frequency , capacitor , engineering , computer science , electrical engineering , telecommunications , mechanical engineering , voltage , band pass filter
Abstract A closed‐form method to design microstrip couplers that have tight coupling, practical dimensions, simple structure, and broadband performance is presented. The method is based on the quasi‐static even‐odd mode approach. According to the proposed method, three‐lumped capacitor connected at the center of the coupled structure are used to relax the requirement on the gap width between the coupled lines. The simulated and measured results of 3 dB couplers designed using the proposed method confirm its validity. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2790–2794, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26395