A Study on the Characteristics of a 400W, 7.9~8.4GHz Double-Slot Coupled-Cavity Traveling-Wave Tube

Kim, Hyoung-Jong; Kim, Hae-Jin; Choi, Jin-Joo; So, Jun-Ho

Journal of the Korea Institute of Military Science and Technology 2009;12(6):760-767.

Hyoung-Jong Kim, Hae-Jin Kim, Jin-Joo Choi, Jun-Ho So

¹Kwangwoon University
²

400W, 7.9~8.4GHz 이중슬롯 결합공진기 진행파관 증폭기 특성 연구

김형종, 김해진, 최진주, 소준호

¹광운대학교
²국방과학연구소

Abstract

This thesis focuses on the study of high-power, coupled-cavity traveling-wave tube(CCTWT) for radar applications. The CCTWT employed a reentrant double-slot staggered RF cavity structure. Computational analysis of the X-band, double-slot staggered structures is carried out through the use of HFSS code, which solves Maxwell's equations fully in three-dimensions. The non-linear, large-signal performance of CCTWTs are predicted from numerical simulations using a three-dimensional particle-in-cell code, MAGIC3D. With beam voltage set to 12.7~13kV and beam current at 300mA, the CCTWT produces a saturated radiation power of 350~430W, corresponding to an electronic efficiency of 8.9~11.2% and a gain of 23.7~24.2dB within a frequency range of 7.9~8.4GHz.

Key Words: Coupled-Cavity, Traveling-Wave Tube, Slow-Wave Structure