Title :
Design of a TM01-TE11 circular bend mode converter operating at 3 GHz
Author :
Prasad, K. Shiva Sai ; Singh, Shiv Aasheesh ; Shanmukha, S.S. ; Seshadri, R. ; Kartikeyan, M.V.
Author_Institution :
Dept. of Electron. & Comput. Eng., Indian Inst. of Technol. Roorkee, Roorkee, India
Abstract :
This paper deals with the mode conversion of the TM01 mode at 3 GHz to the linearly polarized TE11 mode for vircator output in a circular waveguide of inner radius 15 cm. The design of the mode converter consists of curvature bend of the waveguide followed by inverse curvature bend. The former was 30.97° bend with 45 cm curvature and latter of 61.5° bend with 42 cm curvature. The design was simulated in Ansoft HFSS and the efficiency of conversion from TM01 to TE11 at 3 GHz was found to be over 95% and the overall efficiency was found to be greater than 90% for a bandwidth 500 MHz from 2.75 GHz to 3.25 GHz.
Keywords :
circular waveguides; vircators; Ansoft HFSS; TM01-TE11 circular bend mode converter; bandwidth 500 MHz; circular waveguide; frequency 2.75 GHz to 3.25 GHz; frequency 3 GHz; inverse curvature bend; vircator output; Antenna radiation patterns; Converters; Couplings; Microwave antennas; Microwave devices; Microwave oscillators; circular bend; mode converter; mode theory; power handling; vircator;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2011 IEEE International
Conference_Location :
Bangalore
Print_ISBN :
978-1-4244-8662-5
DOI :
10.1109/IVEC.2011.5746933
