Design of dual-band transmission line with flexible phase shifts and its applications

Author

Han Ren ; Jin Shao ; Mi Zhou ; Arigong, Bayaner ; Jun Ding ; Hualiang Zhang

Author_Institution

Dept. of Electr. Eng., Univ. of North Texas, Denton, TX, USA

Volume

51

Issue

3

fYear

2015

fDate

2 5 2015

Firstpage

261

Lastpage

262

Abstract

A novel dual-band transmission line with flexible phase shifts is presented. To realise dual-band operations, the proposed transmission line is constructed by series-connected coupled lines and open-ended stubs. Using this structure, flexible characteristic impedances and electrical lengths can be designed to operate at two frequencies. Moreover, the proposed dual-band transmission line features a wide range of realisable frequency ratios and a flexible structure. For practical applications, a planar dual-band 3 dB branch-line coupler operating at 2/5.2 GHz is designed using the proposed dual-band transmission line. The simulation and measurement results agree very well with the design theory.

Keywords

UHF circuits; coupled circuits; coupled transmission lines; microwave circuits; phase shifters; dual-band transmission line; flexible phase shift; frequency 2 GHz; frequency 5.2 GHz; gain 3 dB; open-ended stub; planar dual-band branch-line coupler; series-connected coupled line;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2014.4140

Filename

7029811