Series-configuration of multi-line directional-coupler sections with improved coupling

Author

Schmiedel, Heinz

Author_Institution

Dept. of Electr. Eng., Univ. of Appl. Sci. FH Darmstadt, Germany

Volume

1

fYear

2004

fDate

6-11 June 2004

Firstpage

339

Abstract

Different from well known conventional designs of parallel-multi-line directional couplers, this paper presents methods to substantially increase the coupling of parallel-line coupler types. Higher coupling is achieved by a novel series configuration of two coupler elements, with moderate, individual coupling, and additional phasing lines in between these two coupling elements. Additional coupler elements allow for broadband designs. Besides high coupling, in principle this coupler arrangement yields substantial decoupling of output ports. This paper presents the basic for three-parallel-line systems and shows simulation results verified by measurements.

Keywords

circuit simulation; coupled transmission lines; directional couplers; parallel architectures; power dividers; strip line couplers; broadband designs; coupled transmission lines; coupler elements; parallel-line coupler; parallel-multiline directional couplers; phasing lines; power dividers; series configuration; stripline couplers; three-parallel-line systems; Couplings; Design engineering; Directional couplers; Impedance; Power dividers; Power transmission lines; Stripline; Transmission line matrix methods; Transmission line measurements; Transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2004 IEEE MTT-S International

ISSN

0149-645X

Print_ISBN

0-7803-8331-1

Type

conf

DOI

10.1109/MWSYM.2004.1335888

Filename

1335888