Open AccessCompact rat‐race ring coupler with meander high‐impedance transmission line and port impedance matching
Author(s) -
He Jun,
Wang BingZhong
Publication year - 2015
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2015.0102
Subject(s) - impedance matching , electrical impedance , meander (mathematics) , port (circuit theory) , quarter wave impedance transformer , characteristic impedance , transmission line , high impedance , rat race coupler , image impedance , acoustics , input impedance , electrical engineering , hybrid coupler , electronic engineering , engineering , power dividers and directional couplers , physics , damping factor , mathematics , geometry
A novel compact rat‐race ring coupler with meander high‐impedance transmission line and port impedance matching is presented in this Letter. First, a ring coupler with high port impedance is designed using meander lines. Secondly, an impedance matching section is designed to match the high port impedance to ordinary 50 Ω. The proposed coupler effectively reduces occupied area to 16.8% of conventional one. The design is validated both by simulation and measurement.