Miniaturized quasi-asymmetric forward-wave coupled-line coupler with arbitrary coupling level

Author

Jungje Ha ; Yongshik Lee

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

fYear

2013

fDate

2-7 June 2013

Firstpage

1

Lastpage

3

Abstract

A design method is demonstrated for quasi-asymmetric forward-wave coupled-line couplers. By loading a symmetric coupled line asymmetrically with shunt capacitors, a miniaturized forward-wave coupler is constructed with an arbitrary maximum coupling level. Most importantly, elimination of lengthy impedance transformers makes the method the most effective miniaturization method. Experimental results are provided for a 3-dB coupler with a miniaturization rate of 92.9% at 5 GHz.

Keywords

waveguide couplers; arbitrary coupling level; arbitrary maximum coupling level; frequency 5 GHz; lengthy-impedance transformers; miniaturization method; miniaturized forward-wave coupler; miniaturized quasiasymmetric forward-wave coupled-line coupler; shunt capacitors; Capacitance; Couplers; Couplings; Design methodology; Frequency measurement; Impedance; Loading; Asymmetric coupled line; forward-wave coupler; microstrip directional coupler; miniaturization; quasi-asymmetric coupled-line coupler; reactive loading;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International

Conference_Location

Seattle, WA

ISSN

0149-645X

Print_ISBN

978-1-4673-6177-4

Type

conf

DOI

10.1109/MWSYM.2013.6697546

Filename

6697546