Title :
Mode discriminator based on mode-selective coupling
Author :
Wang, Wenxiang ; Gong, Yubin ; Yu, Guofen ; Yue, Lingna ; Sun, Jiahong
Author_Institution :
Nat. Key Lab. of High Power Vacuum Electron., Univ. of Electron. Sci. & Technol. of China, Sichuan, China
fDate :
1/1/2003 12:00:00 AM
Abstract :
Mode discriminators based on a mode-selective coupling principle have a number of advantages. The design method of this type of discriminator is presented in this paper. The emphasis is placed on the mode-selective coupler with a multihole and multigroup of coupling holes. All of the dimensions of the discriminator are determined by this method. The calibration and power measurement of the discriminator are also investigated. Some design examples of discriminators for 35- and 70-GHz gyrotrons, which can be applied to discriminate the TE11, TE01, and TE02 modes and the TE01, TE02, and TE03 modes, respectively, are given.
Keywords :
calibration; discriminators; gyrotrons; millimetre wave devices; millimetre wave tubes; waveguide components; 35 GHz; 70 GHz; calibration; coupling holes; gyrotrons; mode discriminator; mode-selective coupling; multigroup; multiholes; power measurement; Antenna measurements; Calibration; Coupling circuits; Design methodology; Electromagnetic heating; Infrared heating; Microwave devices; Microwave measurements; Power measurement; Sun;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2002.806947
