A High-Efficiency Microwave Power Combining System Based on Frequency-Tuning Injection-Locked Magnetrons
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918206165221376 |
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| author | Chen, Xiaojie Yang, Bo Shinohara, Naoki Liu, Changjun |
| author_facet | Chen, Xiaojie Yang, Bo Shinohara, Naoki Liu, Changjun |
| contents | To increase the power level and energy utilization rate of injection-locked magnetron sources, a dual way 1-kW S-band magnetron microwave power combining system with high combining efficiency was proposed and validated. A waveguide magic-Tee was used to achieve power combining and to provide a pathway for the reference signal. This system utilizes the power-dividing characteristic of a magic-Tee to lock two magnetrons. Frequency tuning is applied to adjust the phase difference between the two magnetrons' signals so as to achieve a high combining efficiency. Experimental results indicate that the microwave power combining efficiency of the proposed system reaches 94.5%. The attenuation of microwave power is caused only by the waveguides and magic-Tee. Our investigation provides a guideline for future high-power microwave combining systems with low losses. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_13516 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A High-Efficiency Microwave Power Combining System Based on Frequency-Tuning Injection-Locked Magnetrons Chen, Xiaojie Yang, Bo Shinohara, Naoki Liu, Changjun Applied Physics To increase the power level and energy utilization rate of injection-locked magnetron sources, a dual way 1-kW S-band magnetron microwave power combining system with high combining efficiency was proposed and validated. A waveguide magic-Tee was used to achieve power combining and to provide a pathway for the reference signal. This system utilizes the power-dividing characteristic of a magic-Tee to lock two magnetrons. Frequency tuning is applied to adjust the phase difference between the two magnetrons' signals so as to achieve a high combining efficiency. Experimental results indicate that the microwave power combining efficiency of the proposed system reaches 94.5%. The attenuation of microwave power is caused only by the waveguides and magic-Tee. Our investigation provides a guideline for future high-power microwave combining systems with low losses. |
| title | A High-Efficiency Microwave Power Combining System Based on Frequency-Tuning Injection-Locked Magnetrons |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2511.13516 |