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Title: Tunability over three frequency bands induced by mode transition in relativistic backward wave oscillator with strong end reflections

Abstract

This paper presents an efficient approach to realizing the frequency tunability of a relativistic backward wave oscillator (RBWO) over three frequency bands by mode transition without changing the slow wave structure (SWS). It is figured out that the transition of the operation mode in the RBWO can be efficiently achieved by using the strong end reflection of the SWS. This mode transition results in the tunability of the RBWO over three frequency bands at high power and high efficiency without changing the SWS. In numerical simulation, the output frequency of the RBWO can jump over 7.9 GHz in C-band, 9.9 GHz in X-band, and 12.4 GHz in Ku-band with output power exceeding 3.0 GW and conversion efficiency higher than 35% by just reasonably transforming the structures of the front and post resonant reflectors which provide the strong end reflection for the SWS.

Authors:
;  [1]; ; ; ;  [2]
  1. Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)
  2. Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024 (China)
Publication Date:
OSTI Identifier:
22299707
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 21; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPUTERIZED SIMULATION; EFFICIENCY; GHZ RANGE 01-100; OSCILLATORS; REFLECTION; RELATIVISTIC RANGE

Citation Formats

Wu, Ping, Deng, Yuqun, Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024, Fan, Juping, Teng, Yan, Shi, Yanchao, and Sun, Jun. Tunability over three frequency bands induced by mode transition in relativistic backward wave oscillator with strong end reflections. United States: N. p., 2014. Web. doi:10.1063/1.4898628.
Wu, Ping, Deng, Yuqun, Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024, Fan, Juping, Teng, Yan, Shi, Yanchao, & Sun, Jun. Tunability over three frequency bands induced by mode transition in relativistic backward wave oscillator with strong end reflections. United States. https://doi.org/10.1063/1.4898628
Wu, Ping, Deng, Yuqun, Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024, Fan, Juping, Teng, Yan, Shi, Yanchao, and Sun, Jun. 2014. "Tunability over three frequency bands induced by mode transition in relativistic backward wave oscillator with strong end reflections". United States. https://doi.org/10.1063/1.4898628.
@article{osti_22299707,
title = {Tunability over three frequency bands induced by mode transition in relativistic backward wave oscillator with strong end reflections},
author = {Wu, Ping and Deng, Yuqun and Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024 and Fan, Juping and Teng, Yan and Shi, Yanchao and Sun, Jun},
abstractNote = {This paper presents an efficient approach to realizing the frequency tunability of a relativistic backward wave oscillator (RBWO) over three frequency bands by mode transition without changing the slow wave structure (SWS). It is figured out that the transition of the operation mode in the RBWO can be efficiently achieved by using the strong end reflection of the SWS. This mode transition results in the tunability of the RBWO over three frequency bands at high power and high efficiency without changing the SWS. In numerical simulation, the output frequency of the RBWO can jump over 7.9 GHz in C-band, 9.9 GHz in X-band, and 12.4 GHz in Ku-band with output power exceeding 3.0 GW and conversion efficiency higher than 35% by just reasonably transforming the structures of the front and post resonant reflectors which provide the strong end reflection for the SWS.},
doi = {10.1063/1.4898628},
url = {https://www.osti.gov/biblio/22299707}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 10,
volume = 21,
place = {United States},
year = {Wed Oct 15 00:00:00 EDT 2014},
month = {Wed Oct 15 00:00:00 EDT 2014}
}