Analysis and design of slot-coupled directional couplers between double-sided substrate microstrip lines

Author

Wong, M.F. ; Fouad Hanna, V. ; Picon, O. ; Baudrand, H.

Author_Institution

CNET-PAB-STS, Issy-les-Moulineaux, France

fYear

1991

fDate

10-14 July 1991

Firstpage

755

Abstract

The characteristics of a slot-coupled directional coupler between two microstrip lines coupled through a rectangular slot in the common ground plane are studied. First, conformal mapping techniques are used to obtain analytic closed-form expressions for the coupler even and odd mode impedances and propagation constants for any coupler configuration. Secondly, a full-wave analysis is performed using the spectral domain approach to determine the dispersion properties of the coupler parameters. Theoretical and experimental results for a 10 dB coupler at 10 GHz are presented.<>

Keywords

directional couplers; strip line components; 10 GHz; SHF; common ground plane; conformal mapping techniques; directional couplers; dispersion properties; double-sided substrate; even mode impedance; full-wave analysis; microstrip lines; odd mode impedances; propagation constants; rectangular slot; slot-coupled; spectral domain approach; Closed-form solution; Conformal mapping; Directional couplers; Impedance; Microstrip; Optical coupling; Performance analysis; Propagation constant; Spectral analysis; Strips;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1991., IEEE MTT-S International

Conference_Location

Boston, MA, USA

ISSN

0149-645X

Print_ISBN

0-87942-591-1

Type

conf

DOI

10.1109/MWSYM.1991.147114

Filename

147114