High efficiency X-band relativistic backward wave oscillator with non-uniform slow wave structures |
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Authors: | WU Yang XU Zhou LI Zheng-Hong MA Qiao-Sheng TANG Chuan-Xiang |
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Institution: | 1 Department of Engineering Physics, Tsinghua University, Beijing 100084, China 2 Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China 3 Science and Technology on High Power Microwave Laboratory, Mianyang 621900, China |
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Abstract: | Backward wave oscillators (BWOs) driven by intense relativistic electron beams are very efficient means of producing high-power microwaves. However, the efficiency of conventional BWO is lower than 30%. An X-band oversized BWO with non-uniform slow wave structure is designed to improve RF output characteristics. In particle-in-cell simulation, a high power microwave with a power of 8.0 GW and efficiency of 40% is obtained, compared with that of 30% obtained in a conventional relativistic BWO. |
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Keywords: | high power microwave BWO slow wave structure non-uniform |
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