Title :
Waveguide branch couplers for tight couplings
Author :
Shen, Tao ; Zaki, Kawthar A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA
fDate :
12/1/2000 12:00:00 AM
Abstract :
Full-wave optimization design of waveguide branch couplers is presented. Waveguide T-junction equivalent circuit parameters are extracted from full-wave modeling results. They are used to explain why tight couplings are difficult to realize using waveguide branch couplers. Approaches used to obtain tight couplings are discussed and illustrated by two design examples of 3-dB couplers. Through random tolerance analysis, it is found that reasonable manufacturing tolerances have no significant effect on coupler performance
Keywords :
equivalent circuits; optimisation; tolerance analysis; waveguide couplers; waveguide junctions; waveguide theory; equivalent circuit parameters extraction; full-wave modeling results; full-wave optimization design; manufacturing tolerances; random tolerance analysis; tight couplings; waveguide T-junction equivalent circuit parameters; waveguide branch couplers; Bifurcation; Couplers; Coupling circuits; Design optimization; Equivalent circuits; Insertion loss; Rectangular waveguides; Scattering; Tolerance analysis; Waveguide discontinuities;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
