@inproceedings{04e402ecc1bc406facd71920836ecebe,
title = "Design of a compact rat-race coupler using dual transmission lines",
abstract = "In this paper, a new guided-wave structure, the dual transmission line, is exploited to develop a compact rat-race coupler based on the reduced-length coupler circuit configuration. A conventional transmission line can be equivalent to a set of dual transmission lines which are realized by two parallel high-impedance transmission lines. The circuit configuration of the reduced-length rat-race coupler can approximately provide a 50 % circuit size reduction. As the transmission lines of this coupler are replaced by high-impedance-based dual transmission lines, the folding technique can be flexibly applied to earn a further circuit size reduction. The proposed rat-race coupler only occupies a 21.87 % circuit size of the conventional one. The measured results of the developed rat-race coupler are in a good agreement with simulated results by full-wave electromagnetic simulator.",
keywords = "dual transmission lines, miniaturization, rat-race coupler",
author = "Tu, {Po Hsiang} and Tseng, {Chao Hsiung}",
year = "2010",
language = "English",
isbn = "9784902339222",
series = "Asia-Pacific Microwave Conference Proceedings, APMC",
pages = "1224--1227",
booktitle = "2010 Asia-Pacific Microwave Conference Proceedings, APMC 2010",
note = "2010 Asia-Pacific Microwave Conference, APMC 2010 ; Conference date: 07-12-2010 Through 10-12-2010",
}