Wideband TEM-TE11 mode convertor for HPM applications.

5th International Congress on Energy Fluxes and Radiation Effects 2016

Bykov, D.N.^1 ; Bykov, N.M.^1 ; Kurkan, I.K.^1,2

Institute of High Current Electronics, 2/3 Akademichesky Ave., Tomsk

634055, Russia^1

National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk

634050, Russia^2

关键词: HFSS software;    High voltage insulators;    Input impedance;    Microwave sources;    Mode convertor;    Operating frequency;    Power conversion efficiencies;    Transition sections;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/830/1/012037/pdf
DOI  :  10.1088/1742-6596/830/1/012037

来源: IOP

【 摘 要 】

The mode convertor design of fundamental coaxial TEM to the lowest asymmetric TE11-mode of a circular waveguide was proposed and optimized with ANSYS HFSS software. It includes axially aligned parts: the input coaxial line with the high voltage insulator, conical coaxial matching line, wave-coax transition section and output circular waveguide. The most losses in this type of convertor caused by the wave of coaxial TE11-mode running back to the microwave source. To minimize these losses, there is the matching conical coaxial line with the cut-off insertion for coaxial TE11-mode. Characteristics of the convertor are as follows: the maximum input peak power - 3GW, the input impedance - 28Ohm, the central operating frequency - 1.14GHz. The power conversion efficiency to the output mode is from 90% upto 100% in the frequency band of 20%.