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

Author

Wong, Man-Fai ; Hanna, Victor Fouad ; Picon, Odile ; Baudrand, Henri

Author_Institution

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

Volume

39

Issue

12

fYear

1991

fDate

12/1/1991 12:00:00 AM

Firstpage

2123

Lastpage

2129

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. Conformal mapping techniques are used to obtain analytic closed-form expressions for the coupler´s even and odd-mode impedance and propagation constants for any coupler configuration. Using the spectral domain approach, a full-wave analysis is performed to determine the dispersion properties of coupler parameters. Theoretical and experimental results for a 10-dB coupler at 10 GHz are presented

Keywords

directional couplers; dispersion (wave); electric impedance; strip line components; waveguide theory; 10 GHz; 10-dB coupler; common ground plane; conformal mapping techniques; directional couplers; dispersion properties; double-sided substrate; even-mode impedance; full-wave analysis; microstrip lines; odd-mode impedance; propagation constants; rectangular slot; slot-coupled; spectral domain approach; Capacitance; Closed-form solution; Conformal mapping; Directional couplers; Impedance; Magnetic analysis; Microstrip; Optical coupling; Performance analysis; Propagation constant;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.106554

Filename

106554