Vol. 108

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2022-02-17

An Optimized Compact Rat Race at 2.45 GHz

By Stefano Maddio, Giuseppe Pelosi, Monica Righini, and Stefano Selleri
Progress In Electromagnetics Research M, Vol. 108, 115-126, 2022
doi:10.2528/PIERM21112603

Abstract

A compact microstrip rat race attained by artificially shortening its lines by inserting stubs is presented. The design starts with a preliminary theoretical length reduction where quarter wavelength lines are shortened thanks to shunt open circuit stubs placed in the line mid-points. Such a preliminary design is then optimized via particle swarm optimization (PSO) within a full wave electromagnetic CAD, also bending the stubs to attain maximum compactness. The resulting design occupies an area up to only 37% of a conventional rat race, with performances comparable to those of a standard rat race.

Citation


Stefano Maddio, Giuseppe Pelosi, Monica Righini, and Stefano Selleri, "An Optimized Compact Rat Race at 2.45 GHz ," Progress In Electromagnetics Research M, Vol. 108, 115-126, 2022.
doi:10.2528/PIERM21112603
http://jpier.org/PIERM/pier.php?paper=21112603

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