dorsal/arxiv
View SchemaA Novel Stability Improvement Method of S-Band Magnetron Systems Based on Its Anode Current Feature
| Authors | S Wang, Y Zhao, X Chen, C Liu |
|---|---|
| Categories | |
| ArXiv ID | 2601.05659vv1 |
| URL | https://arxiv.org/abs/2601.05659 |
| DOI | 10.1109/TMTT.2024.3371160 |
| Journal | IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 9, pp. 5530-5539, Sept. 2024 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
Magnetrons are widely used as a high-efficiency, large-power, and low-cost microwave source. This article proposes a method to improve the magnetron output characteristics based on regulating its anode current by a novel active distortion eliminator. It takes advantage of the constant current state of MOSFETs to suppress the anode current ripple and eliminate the magnetron output ripples. An improved switch-mode power supply is applied to a 1-kW commercial S -band magnetron in the experiment. The peak-to-peak anode current ripple is reduced from 31 to 7 mA. The spectral width of the free-running magnetron is decreased from 246 to 87 kHz. In the injection locking state, the spur noise is significantly reduced with a maximum suppression strength of 23 dB at a 100-Hz offset. The peak-to-peak value of the magnetron magnitude and phase jitter are suppressed to 15% and 16% of their original values at a power injection ratio of 0.13. This method provides a novel approach for stabilizing the output phase of an injection-locked magnetron, making it promising for applications in phased arrays, wireless power transfer, particle accelerators, large-power communication, and other scenarios that require high phase stability.
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"abstract": "Magnetrons are widely used as a high-efficiency, large-power, and low-cost microwave source. This article proposes a method to improve the magnetron output characteristics based on regulating its anode current by a novel active distortion eliminator. It takes advantage of the constant current state of MOSFETs to suppress the anode current ripple and eliminate the magnetron output ripples. An improved switch-mode power supply is applied to a 1-kW commercial S -band magnetron in the experiment. The peak-to-peak anode current ripple is reduced from 31 to 7 mA. The spectral width of the free-running magnetron is decreased from 246 to 87 kHz. In the injection locking state, the spur noise is significantly reduced with a maximum suppression strength of 23 dB at a 100-Hz offset. The peak-to-peak value of the magnetron magnitude and phase jitter are suppressed to 15% and 16% of their original values at a power injection ratio of 0.13. This method provides a novel approach for stabilizing the output phase of an injection-locked magnetron, making it promising for applications in phased arrays, wireless power transfer, particle accelerators, large-power communication, and other scenarios that require high phase stability.",
"arxiv_id": "2601.05659",
"authors": [
"S Wang",
"Y Zhao",
"X Chen",
"C Liu"
],
"categories": [
"physics.app-ph"
],
"doi": "10.1109/TMTT.2024.3371160",
"journal_ref": "IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 9, pp. 5530-5539, Sept. 2024",
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "A Novel Stability Improvement Method of S-Band Magnetron Systems Based on Its Anode Current Feature",
"url": "https://arxiv.org/abs/2601.05659",
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