Title :
Matched symmetrical five-port microstrip coupler
Author :
Yeo, S.P. ; Choong, F.C.
Author_Institution :
Electr. & Comput. Eng. Dept., Nat. Univ. of Singapore, Singapore
fDate :
8/1/2001 12:00:00 AM
Abstract :
Other researchers have fabricated a symmetrical five-port microstrip coupler (with a double-ring structure) yielding a bandwidth of 58%. It has been found in this paper that a simple modification of the design topology allows the coupler´s bandwidth to be broadened to 76%. A first-order model of the new prototype has also been developed, and tests have confirmed that close agreement can be expected between the predicted and experimental results for the coupler´s scattering coefficients
Keywords :
microstrip couplers; bandwidth; design topology; double-ring structure; matched symmetrical five-port microstrip coupler; scattering coefficients; Arm; Bandwidth; Coupling circuits; Joining processes; Microstrip; Predictive models; Prototypes; Scattering; Testing; Topology;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
