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Miniaturized microstrip branch‐line couplers with the approach of π‐model
Author(s) -
Tang ChingWen,
Chen MingGuang
Publication year - 2008
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.23061
Subject(s) - microstrip , microwave , hybrid coupler , engineering , line (geometry) , electronic engineering , electrical engineering , rat race coupler , topology (electrical circuits) , power dividers and directional couplers , telecommunications , mathematics , geometry
The newly method to implement the branch‐line couplers has been proposed in this letter. Using the approach of π‐model, the size of branch‐line coupler can be miniaturized easily. Especially, the proposed coupler without using any lumped element can be easily fabricated on the printed circuit board. In this study, the proposed couplers achieve a physical size reduction of almost 63% with the performance competed with the conventional one. Moreover, the measured frequency responses show good agreement with the theoretical results. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 314–316, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23061