skip to main content

SciTech ConnectSciTech Connect

Title: A new coaxial high power microwave source based on dual beams

We present a new coaxial high power microwave source based on dual beams, which combines a relativistic backward wave oscillator (RBWO) (noted as the inner sub-source below) and a coaxial transit-time oscillator (TTO) (noted as the outer sub-source). The cathode consists of an inner and an outer annular cathode, which provides the inner and the outer annular electron beam for the sub-sources, respectively. Particle-in-cell (PIC) simulation results demonstrate that power conversion efficiencies of the two sub-sources with an identical frequency of 9.74 GHz are 29% and 25%, respectively. It is furthermore found that phase locking between the inner and the outer sub-sources can be realized, which suggests a feasibility to obtain a higher power output if the two microwave signals are coherently combined.
Authors:
; ; ; ;  [1]
  1. College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073 (China)
Publication Date:
OSTI Identifier:
22300130
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CATHODES; ELECTRON BEAMS; GHZ RANGE 01-100; MICROWAVE RADIATION; OSCILLATORS; RELATIVISTIC RANGE; SIGNALS; SIMULATION