Slot-coupled directional couplers between double-sided substrate microstrip lines and their applications

1 December 1988

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques

Vol. 36 (12) , 1752-1757
https://doi.org/10.1109/22.17410

Abstract

A slot-coupled microstrip directional coupler and its application to a planar multiport directional coupler (MDC) are described. This coupler can be applied to both loose coupling (e.g. 10 dB) and tight coupling (e.g. 3 dB). A four-port planar MDC fabricated by combining these couplers is described. Measured and calculated results are in agreement for both couplers.

Keywords

This publication has 2 references indexed in Scilit:

Multiport power combining transmitter for multibeam satellite communications
Electronics and Communications in Japan (Part I: Communications), 1987
A Method of Analysis of Symmetrical Four-Port Networks
IEEE Transactions on Microwave Theory and Techniques, 1956