Title :
New compact broadband high-efficiency mode converters for high power microwave tubes with TE/sub 0n/ or TM/sub 0n/ mode outputs
Author :
Buckley, M.J. ; Luo, G.H. ; Vernon, R.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
Abstract :
Shorter, broader bandwidth designs are discussed for TE/sub 03/-TE/sub 02/ and TE/sub 02/-TE/sub 01/ varying-radius mode converters and TE/sub 01/-TE/sub 11/ serpentine mode converters for a 2.779-cm-diameter circular waveguide for 60- and 140-GHz gyrotrons. Designs combing TE/sub 0n/-TE/sub 0n-1/ converters with a 6.35-2.779-cm-diameter taper are presented. A TM/sub 01/-TE/sub 11/ serpentine mode converter design for a frequency of 8.6 GHz in a 4.76-cm circular waveguide is also discussed. Measured results are presented.<>
Keywords :
circular waveguides; rotation; waveguide couplers; 140 GHz; 6.35 to 2.779 cm; 60 GHz; 8.6 GHz; EHF; SHF; TE/sub 0n/ mode outputs; TM/sub 0n/ mode outputs; broadband high-efficiency mode converters; gyrotrons; high power microwave tubes; overmoded circular waveguides; serpentine mode converters; taper; varying-radius mode converters; Bandwidth; Electromagnetic heating; Equations; Frequency conversion; Gyrotrons; Plasma measurements; Plasma waves; Rectangular waveguides; Tellurium; Transducers;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22152
