Title :
A four-port network compensation approach for directional couplers
Author :
Müller, Johannes ; Jacob, Arne F.
Author_Institution :
Inst. fur Hochfrequenztech., Techn. Univ. Hamburg-Harburg, Hamburg, Germany
Abstract :
A novel approach for compensating the phase velocity difference in coupled line structures is presented. It utilizes twofold symmetric four-port networks. Analytical design equations are derived. The method is shown to be superior to other lumped element compensation techniques. The advantages are the simple and straightforward design procedure and the inherently broadband compensation. A realized microstrip coupler exhibits good measured performance, thus confirming the approach.
Keywords :
directional couplers; microstrip couplers; multiport networks; broadband compensation; coupled line structures; directional couplers; four-port network compensation; lumped element compensation; microstrip coupler; phase velocity difference; Directional couplers; Impedance; Microstrip; Microwave circuits; Microwave filters;
Conference_Titel :
Microwave Conference (EuMC), 2011 41st European
Conference_Location :
Manchester
Print_ISBN :
978-1-61284-235-6