A novel power-combination method using a time-reversal pulse-compression technique

doi:10.1088/1674-1056/acaa2a

中国物理B ›› 2023, Vol. 32 ›› Issue (8): 84101-084101.doi: 10.1088/1674-1056/acaa2a

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

收稿日期:2022-10-08 修回日期:2022-12-04 接受日期:2022-12-09 发布日期:2023-07-27
通讯作者: Jin Tian E-mail:tianjin@xidian.edu.cn
基金资助:
Project supported by the National Key R&D Program of China (Grant No.2021YFC2203503).

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

Received:2022-10-08 Revised:2022-12-04 Accepted:2022-12-09 Published:2023-07-27
Contact: Jin Tian E-mail:tianjin@xidian.edu.cn
Supported by:
Project supported by the National Key R&D Program of China (Grant No.2021YFC2203503).

摘要/Abstract

摘要： 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.

关键词: time reversal, time-reversal cavity, power combination, pulse compression

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.

Key words: time reversal, time-reversal cavity, power combination, pulse compression

中图分类号: (Electromagnetic wave propagation; radiowave propagation)

41.20.Jb

41.20.-q (Applied classical electromagnetism)

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[J]. 中国物理B, 2023, 32(8): 84101-084101.

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A novel power-combination method using a time-reversal pulse-compression technique

A novel power-combination method using a time-reversal pulse-compression technique

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