Open AccessDESIGN OF MINIATURIZED RAT-RACE COUPLERS WITH ARBITRARY POWER DIVISION RATIOS
Author(s) -
Xiao Yang,
ZhenHeng Liao,
Xuchun Zhang
Publication year - 2018
Publication title -
progress in electromagnetics research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.245
H-Index - 33
ISSN - 1937-6480
DOI - 10.2528/pierl17110805
Subject(s) - division (mathematics) , race (biology) , power (physics) , materials science , optoelectronics , electrical engineering , physics , engineering , mathematics , sociology , arithmetic , quantum mechanics , gender studies
A miniaturized rat-race coupler with arbitrary power division ratio is proposed in this paper. The design formulas of the rat-race coupler with arbitrary power division ratio are derived using even-odd decomposition analysis. The proposed structure demonstrates miniaturized size and perfect isolation due to adding phase inverter to the branch. For demonstration, a 20 dB rat-race coupler operating at 1GHz with 81.34% size reduction is designed and fabricated. There is good agreement between measured and simulated results.
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