Analysis of the injection-locked magnetron with a mismatched circulator

doi:10.1088/1674-1056/23/8/088402

Abstract Based on the scatter matrix of the four-port lossless mismatched circulator, the phase differential equation of the injection-locked magnetron is derived by comparing different effects of the mismatched and perfect circulator on the injection ratio. Besides, the locking range of the injection-locked magnetron with the mismatched circulator is deduced by functional operation. In addition, the phase differential equation and the locked bandwidth of the injection-locked system with a mismatched circulator are compared with those of the small injection-ratio case with a perfect circulator. The influence of the circulator reflection coefficient on the injection-locked magnetron is also analyzed by numerical calculation. Theoretical analysis shows that the decrement of the locked bandwidth is less than 1% and decrement of the stable phase difference is less than 1.2% when the reflection coefficient is less than 0.1.

Keywords: injection-locked magnetron mismatched circulator phase difference locked bandwidth

Received: 06 January 2014
Revised: 18 February 2014
Accepted manuscript online:

PACS:	84.40.Fe	(Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))
	42.25.Kb	(Coherence)
	52.65.Rr	(Particle-in-cell method)

Fund: Project supported by the National Basic Research Program of China (Grant No. 2013CB328901) and the National Natural Science Foundation of China (Grant No. 11305177).

Corresponding Authors: Yue Song
E-mail: yuessd@163.com

Cite this article:

Yue Song (岳松), Zhang Zhao-Chuan (张兆传), Gao Dong-Ping (高冬平) Analysis of the injection-locked magnetron with a mismatched circulator 2014 Chin. Phys. B 23 088402

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