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Miniaturized two-section branch-line coupler using open-stub slow-wave structure
Journal
Lecture Notes in Networks and Systems
Innovations in Electronics and Communication Engineering
ISSN
2367-3370
2367-3389
Date Issued
2020
Author(s)
Kok Yeow You
Universiti Teknologi Malaysia
Jaw Chung Chong
Universiti Teknologi Malaysia
Mohd Fareq Abdul Malek
University of Wollongong, United Arab Emirates
Yeng Seng Lee
Sehar Mirza
University of Wollongong, United Arab Emirates
DOI
10.1007/978-981-15-3172-9_7
Abstract
This study presents the miniaturization of two-section branch microstrip lines coupler using the slow-wave technique. Regular and miniature branch-line couplers operating at 2.4 GHz are designed, fabricated, tested, and compared. Up to 38% reduced size of the miniature coupler is achieved compared to the conventional coupler. The miniaturized coupler is capable of operating from 1.85 to 3.2 GHz with a bandwidth of 1.35 GHz. Overall, the simulation and measurement results demonstrated a good agreement.