2017 IEEE Pulsed Power Conference

An all circular waveguide four-way power combiner with ultra high power capacity and high combination efficiency

19 Jun 2017, 13:30

1h 30m

Hall 4 / Cambridge (Hilton Brighton Metropole Hotel)

Board: 15

Poster High Power Microwaves, RF Sources and Antennas Poster session I - High Power Microwaves, RF Sources and Antennas

Speaker

Dr Renzhen Xiao (Northwest Institute of Nuclear Technology)

Description

Abstract: The two-way power combiner consisting of two TM01-TE11 serpentine mode converters with a common output has demonstrated high power capacity and high combination efficiency for two phase-locked relativistic backward wave oscillators (RBWOs) [1]. To realize channel power combination for four phase-locked X-band RBWOs, we propose an all circular waveguide four-way power combiner based on the previous two-way power combiner. Four TM01 modes are first combined into two TE11 modes, then through two separate 90° bending waveguide and the radius enhanced transition waveguides, the two TE11 modes is combined into one TE11 mode. The transmission efficiencies of 90° bending waveguide and radius enhanced transition waveguides, and the combination efficiency of the two TE11 modes into one TE11 mode are larger than 99%. The maximum electric field is less than 750 kV/cm as the power in the common output port is 10 GW, and the total combination efficiency is more than 90%.
[1] R. Z. Xiao, Y. Q. Deng, Y. Wang, Z. M. Song, J. W. Li, J. Sun, and C. H. Chen, Power combiner with high power capacity and high combination efficiency for two phase-locked relativistic backward wave oscillators. Appl. Phys. Lett. 107, 133502, 2015.