220 GHz folded waveguide slow-wave structure

wang yajun; chen zhang; cheng yanlin; shi zhigui; yin hairong

Volume 23 Issue 06

Jun. 2011

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Article Navigation > High Power Laser and Particle Beams > 2011 > 23(06): 0-

wang wen-dou, xie wei-ping, song sheng-yi, et al. Transverse space-charge flow in four magnetically insulated transmission lines[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

wang yajun, chen zhang, cheng yanlin, et al. 220 GHz folded waveguide slow-wave structure[J]. High Power Laser and Particle Beams, 2011, 23.

wang wen-dou, xie wei-ping, song sheng-yi, et al. Transverse space-charge flow in four magnetically insulated transmission lines[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

wang yajun, chen zhang, cheng yanlin, et al. 220 GHz folded waveguide slow-wave structure[J]. High Power Laser and Particle Beams, 2011, 23.

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220 GHz folded waveguide slow-wave structure

1.
Institute of Electronic Engineering,CAEP,P.O.Box 919-512,Mianyang 621900,China;
2.
School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China

Publish Date: 2011-06-28

Abstract

Abstract

A 220 GHz folded waveguide slow-wave structure is designed and its dispersion relation, interaction impedance and circuit attenuation are analyzed. The simulation results show good agreement with the theoretical formula analysis. The folded waveguide slow-wave structure has broad cold bandwidth about 119 GHz, flat dispersion relation, fairly high interaction impedance about 3 Ω and low circuit attenuation for a 220 GHz central frequency. The large signal performance of 27 mm (50 periods) folded waveguide circuit is predicted. Simulations show that the nonlinear gain is 14.5 dB at 220 GHz where beam voltage and current are 20 kV and 10 mA, respectively. A saturated 3 dB bandwidth is 16.3 GHz (211.9 GHz to 228.2 GHz).
- cold characteristics,
- folded waveguide,
- simulation,
- terahertz radiation

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