Affiliation:
1. School of Electronics Science and Engineering, University of Electronic Science and Technology of China , Chengdu 610054, China
Abstract
We propose a coaxial line structure for phase-locking between magnetrons in the S-band for the first time. In this structure, two magnetrons operating in the π-mode are tightly coupled by the coaxial line. The design of a coaxial line structure, independent of physical dimensions, solves the problem of a ridge waveguide or rectangular waveguide being unsuitable for phase-locking in the compact S-band magnetron, as proposed by previous researchers. In addition, the phase relationship of the magnetron output signal in the phase-locked state can be switched between 0 and the π phase difference without changing the length of the coaxial line. Therefore, this design widens the frequency range used by mutual coupling phase-locked technology and allows switching of the phase relationship in an output signal without the need for additional equipment or physical space. After design simulation, two magnetrons achieved high-efficiency phase locking at a frequency of 2.415 GHz, with a phase-locked efficiency of 99.8%.
Funder
National Science Foundation of China
National Key Research and Development Program of China
Fundamental Research and Fund for the Central Universities
National Science Foundation of Sichuan
Subject
General Physics and Astronomy