Title :
A 3 dB planar coupler in the form of an elliptically shaped disc
Author :
Bialkowski, M.E. ; Jellett, S.T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queensland Univ., St. Lucia, Qld., Australia
Abstract :
A planar 3 dB coupler in the form of an 8-port elliptical disc is investigated theoretically and experimentally. The hybrid consists of additional reactive stubs and impedance steps for tuning purposes. The new device features flat coupling, good return loss and isolation over a 20% relative bandwidth.<>
Keywords :
microstrip components; tuning; waveguide couplers; elliptically shaped disc; flat coupling; hybrid; impedance steps; planar coupler; reactive stubs; tuning; Bandwidth; Impedance;
Conference_Titel :
Microwave Symposium Digest, 1994., IEEE MTT-S International
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-1778-5
DOI :
10.1109/MWSYM.1994.335334
