| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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A novel power-combination method using a time-reversal pulse-compression technique |
| Xi-Cheng Lu(陆希成)1,2, Jin Tian(田锦)1,†, Rong-Wei Zhang(张荣威)3, Hai-Bo Wang(汪海波)3, and Yang Qiu(邱扬)1 |
1. College of Mechanical and Electrical Engineering, Xidian University, Xi'an 710071, China;
2. School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
3. Northwest Institute of Nuclear Technology, Xi'an 710024, China |
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Abstract The electromagnetic time-reversal (TR) technique has the characteristics of spatiotemporal focusing in a time-reversal cavity (TRC), which can be used for pulse compression, thus forming an electromagnetic pulse with high peak power. A time-reversed pulse-compression method in a single channel has high pulse compression gain. However, single channel pulse compression can only generate limited gain. This paper proposes a novel TR power-combination method in a multichannel TRC to obtain higher peak power based on TR pulse-compression theory. First, the TR power-combination model is given, and the crosstalk properties of the associated channel and the influence of the reversal performance are studied. Then, the power-combination performances for the TR pulse compression, such as combined signal to noise ratio (SNR) and combined compression gain, are analyzed by numerical simulation and experimental methods. The results show that the proposed method has obvious advantages over pulse-compression methods using a single channel cavity, and is more convenient for power combination.
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Received: 08 October 2022
Revised: 04 December 2022
Accepted manuscript online: 09 December 2022
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PACS:
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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41.20.-q
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(Applied classical electromagnetism)
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| Fund: Project supported by the National Key R&D Program of China (Grant No.2021YFC2203503). |
Corresponding Authors:
Jin Tian
E-mail: tianjin@xidian.edu.cn
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Cite this article:
Xi-Cheng Lu(陆希成), Jin Tian(田锦), Rong-Wei Zhang(张荣威), Hai-Bo Wang(汪海波), and Yang Qiu(邱扬) A novel power-combination method using a time-reversal pulse-compression technique 2023 Chin. Phys. B 32 084101
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