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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국진공학회(ASCT) Journal of Korean Vacuum Science & Technology Journal of Korean Vacuum Science & Technology Vol.3 No.1
- 발행연도
- 1999.4
- 수록면
- 59 - 65 (7page)
이용수
초록· 키워드
오류제보하기
There has been an interest to develop an efficient, compact microwave device using field-emitter-arrays(FEA)-based cathode. To evaluate the optimum device-efficiency in a compact size, the propagation properties of the premodulated electron beam for the FEA-based cathode is studied in detail by the computer simulation using a PIC code, MAGIC. For the premodulated electron beam whose phase of the energy leads the phase of the current by π/2, the amplitude of the downstream current modulation can be kept as high as the initial modulation level. Using the beam parameters with the beam voltage of 6 ㎸ and the current of 0.2 A, 30% of efficiency is predicted when the quality factor of 800 is chosen. The device length is reduced about twice compared with that of the conventional device. The design of practical planar cathode is carried out to meet the minimum diameter of the electron beam as 0.5 ㎜.
목차
Abstract
Ⅰ. Introduction
Ⅱ. Results of Computer Simulation
Ⅲ. Conclusion
References
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