This paper presents an unconventional design for a circular rat race coupler operating at 5 GHz frequency. The size of the novel design implemented is 21.68mm x 15.72mm. The unconventional design of the coupler allows 40\% reduction in the size of the coupler as compared with the conventional rat race coupler without compromising on performance. Measured and simulated results of the S-parameters are provided. © 2020 IEEE.

Madhur Deo Upadhayay

Electrical Engineering

(SoE) School of Engineering

Vedala V.

Shandiliya A.

<p>Shiv Nadar University is a comprehensive, multidisciplinary, research-focused, and student-centric University offering a full range of academic programs at the undergraduate, postgraduate and doctoral level. With state-of-the-art infrastructure, the University comprises of academic wings, sophisticated labs, international standard sports facilities, amphitheaters, auditorium, conference rooms and smart classrooms. The University&rsquo;s goal is to become internationally recognized for the quality of its research and creative endeavors and their applicability to improving quality of life, generating new insights and expanding the boundaries of human knowledge creativity. Committed to excellence in teaching, research and service, the University aims to serve the higher education needs of India and the world beyond.</p>

Shiv Nadar University

Compact Horse Shoe Shape Rat-Race Coupler

2020 7th International Conference on Signal Processing and Integrated Networks, SPIN 2020

2020 7th International Conference on Signal Processing and Integrated Networks (SPIN)

IEEE Microwave Magazine

Microstrip Rat-Race Couplers

Progress In Electromagnetics Research

GENERALIZED SYNTHESIS OF RAT RACE RING COUPLER AND ITS APPLICATION TO CIRCUIT MINIATURIZATION

IET Microwaves, Antennas & Propagation

Design of miniaturised branch-line and rat-race hybrid couplers with harmonics suppression

IEEE Microwave and Wireless Components Letters

Compact Rat-Race Coupler Using Shunt-Stub-Based Artificial Transmission Lines

Compact horse shoe shape rat-race coupler