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arXiv · 2512.06482

Study on Improving Microwave Heating Uniformity Based on Phase-Frequency Simultaneous Modulation Technique

Xu Zhu·Shaoyue Wang·Da He·Liping Yan·Jianan Hu·Changjun Liu
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Abstract

Conventional microwave heating techniques are limited due to inherent thermal point residency effects and inadequate control over the heating process. A novel method is proposed to enhance microwave heating uniformity using the injection-pulling technique. In this method, the injection-pulling technique is used to achieve simultaneous modulation of both the output phase and frequency of the magnetron, thereby extending the locking bandwidth of the injection-locking technique. The output characteristics of the injection-pulled magnetron were validated through numerical calculations and experiments. Microwave heating experiments were conducted under both a five-cup water load and an absorbent paper load. Compared with conventional injection-locking frequency sweeping, the proposed method not only expands the sweeping bandwidth from 8 to 18 MHz but also further improves heating uniformity, offering more options for magnetron applications in microwave heating.

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Xu Zhu, Shaoyue Wang, Da He, Liping Yan, Jianan Hu, Changjun Liu. 2025-12-06. Study on Improving Microwave Heating Uniformity Based on Phase-Frequency Simultaneous Modulation Technique. https://doi.org/10.1109/lmwt.2025.3591716

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