Miniaturized Ring Coupler with Arbitrary Power Divisions Based on the Composite Right/Left-Handed Transmission Lines

Author

Chi, Pei-Ling

Author_Institution

Dept. of Electr. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

22

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

170

Lastpage

172

Abstract

A novel and miniaturized ring coupler capable of presenting arbitrary power divisions is proposed using the composite right/left-handed (CRLH) transmission lines. The unbalanced CRLH transmission lines that can be easily tailored to implement transmission lines of high or low Bloch impedance are applied to enhance the coupler´s capability of arbitrary power divisions. To support our idea, a ring coupler that offers a 6 dB power division ratio and occupies only 44% of the conventional footprint was experimentally realized. Experimental results agree well with the simulation data. The proposed CRLH configuration demonstrates an alternative for implementing a compact ring coupler with arbitrary power division ratios.

Keywords

metamaterials; waveguide couplers; Bloch impedance; CRLH transmission lines; arbitrary power division ratio; compact ring coupler; composite right-left-handed transmission lines; miniaturized ring coupler; unbalanced CRLH transmission lines; Capacitors; Couplers; Impedance; Loss measurement; Microstrip; Power transmission lines; Transmission line measurements; Arbitrary power divisions; composite right/left-handed transmission lines; miniaturization; ring couplers; unbalanced structures;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2012.2189376

Filename

6172612