Wideband size-reduced microstrip rat-race hybrid with double-side-swap phase inverter

Author

Mung, S.W.Y. ; Chan, Wing Shing

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China

Volume

49

Issue

13

fYear

2013

fDate

June 20 2013

Firstpage

823

Lastpage

824

Abstract

A double-side-swap phase inverter is proposed in the rat-race hybrid. This phase inverter with a 90° line replaces the conventional 270° line in the hybrid, which results in a size reduction and widening of the bandwidth. In microwave components, a large ground plane has the advantages of acting as an effective reflector in antenna systems and providing excellent heat sinking in high power applications. Experiment shows that this proposed hybrid has good performance from 1.2 to 2.8 GHz (f_o = 2 GHz). The bandwidth is increased from 10 to 80 %, respectively, and a 43 % size reduction is obtained compared with the conventional rat-race hybrid.

Keywords

UHF antennas; broadband networks; heat sinks; invertors; microstrip antennas; reflector antennas; antenna systems reflector; bandwidth widening; double-side-swap phase inverter; frequency 1.2 GHz to 2.8 GHz; heat sinking; high power applications; large ground plane; microwave components; size reduction; wideband size-reduced microstrip rat-race hybrid;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2013.0071

Filename

6553039