Title :
Slot-coupled directional couplers between double-sided substrate microstrip lines and their applications
Author :
Tanaka, Toshiaki ; Tsunoda, Kikuo ; Aikawa, Masayoshi
Author_Institution :
ATR, Higashi-ku, Osaka, Japan
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 :
directional couplers; strip line components; directional couplers; double-sided substrate; four-port planar coupler; loose coupling; microstrip lines; planar multiport coupler; slot-coupled type; tight coupling; Coupling circuits; Directional couplers; Distributed parameter circuits; Microstrip; Microwave circuits; Microwave integrated circuits; Optical amplifiers; Power amplifiers; Power transmission lines; Stripline;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
