Title :
Design and performance of π guide directional couplers with very flat couplings
Author :
Rodriguez, Jose ; Prieto, A.
Author_Institution :
Universidad de Santander, Departamento de Electricidad y Magnetismo, Santander, Spain
Abstract :
The use of the π guide is proposed for the construction of directional proximity couplers with a very flat response for the coupling. The dielectric configurations are analysed by Schelkunoff´s method and the effective constant dielectric method. The introduction of metallic walls in a dielectric proximity coupler allows us to eliminate the additional couplings in the curved zones, couplings which depend heavily on the frequency, and reduce the radiation losses.
Keywords :
directional couplers; π guide directional couplers; Schelkunoff method; dielectric configurations; directional proximity couplers; effective constant dielectric method; metallic walls; radiation losses; very flat couplings;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850209
