Coherent Power Combining of Four-Way Injection-Locked 5.8-GHz Magnetrons Based on a Five-Port Hybrid Waveguide Combiner

Huang, Heping; Yang, Bo; Shinohara, Naoki; Liu, Changjun

doi:10.1109/tmtt.2023.3347549

Cited by 2 publications

(1 citation statement)

References 38 publications

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“…Magnetrons, given their low price point, high efficiency, and high output power, are promising candidates for large-scale microwave heating [11][12][13]. Their spectral characteristics may be improved by injection-locking techniques [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Magnetron’s Power-Pulled Characteristic to Realize a Quasi-Dual-Frequency Microwave Output

Zhao,

Wang,

et al. 2024

Electronics

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This article presents experimental evidence demonstrating the feasibility of implementing a quasi-dual-frequency microwave signal generator using a 1 kW commercial magnetron. The injection-pulled magnetron may generate quasi-dual-frequency output with nearly identical amplitudes by injecting signal at specific powers and frequencies out of the Adler locking band. This generator offers the advantage of developing a large-power and tunable quasi-dual-frequency signal at low cost and with simple implementation. In the present study, a tunable quasi-dual-frequency signal with a frequency interval ranging from 0.48 MHz to 13.74 MHz is generated experimentally. Furthermore, the effects of anode voltage ripples on the dual-frequency outputs are experimentally investigated. An empirical relationship between the frequency interval and injection ratio is obtained and presented. In addition, neither the output power nor the efficiency of the magnetron in the dual-frequency mode decreases. This research is promising for improving microwave heating uniformity in large-scale industrial applications.

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