Title :
Design and Optimization of a Broadband Waveguide Magic-T Using a Stepped Conducting Cone
Author :
Hwang, Keum Cheol
Author_Institution :
Dept. of Electron. Eng., Dongguk Uni versity, Seoul, South Korea
Abstract :
The design of a broadband waveguide magic-T was accomplished using a genetical swarm optimization (GSO) technique. A multi-stepped, off-centered conducting cone was used to enhance the bandwidth performance of the conventional magic-Ts. The geometrical parameters of the stepped cone were optimized by GSO, and the optimized magic-T for X-band application was fabricated and tested. Measured scattering parameters are shown to be in good agreement with the computed results. The optimized design exhibits -20 dB reflection bandwidth over 20.0% at all waveguide ports.
Keywords :
S-parameters; conducting bodies; genetic algorithms; waveguide junctions; GSO technique; X-band application; broadband waveguide magic-T design; genetical swarm optimization; geometrical parameters; scattering parameter measurement; stepped conducting cone; Broadband magic-T; genetic algorithm; particle swarm optimization; waveguide;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2009.2027052
