Temporal Focusing Effects of Time-Reversal Frequency Diverse Array Antenna

被引:6
作者
Cheng, Jie [1 ]
Wang, Wen-Qin [1 ]
Chen, Hui [1 ]
Ji, Shilong [1 ]
机构
[1] Univ Elect Sci & Technol China, Sch Informat & Commun Engn, Chengdu 611731, Sichuan, Peoples R China
来源
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2019年 / 18卷 / 09期
基金
中国国家自然科学基金;
关键词
Array beampattern; channel modeling; frequency diverse array (FDA); temporal focusing; time-reversal communication; RADAR;
D O I
10.1109/LAWP.2019.2931457
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Omnidirectional or the phased-array antenna is usually adopted in the time-reversal literature, but it cannot focus the power of the transmitted signals in both time- and space-domains. In this letter, we propose the hybridization of time reversal and frequency diverse array (FDA), which transmits the signal with a small frequency offset across the array to generate both angle- and range-dependent beampattern, for temporal focusing. The time-reversal FDA channel is modeled in multipath scenarios. For the given parameters with 12 transmit elements spaced by half-wavelength, carrier frequency 1 GHz, and frequency offset 1 kHz, the peak of time-reversal FDA focusing is 18.7% higher than that of a standard FDA. Both theoretic analysis and simulation results verify that, while maintaining FDA angular-time periodicity, the FDA range periodicity is eliminated and the energy is focused at the target position by the use of time-reversal processing.
引用
收藏
页码:1858 / 1862
页数:5
相关论文
共 34 条
[31]   Secure Wireless Communication for Correlated Legitimate User and Eavesdropper Channels via Movable-Antenna Enhanced Frequency Diverse Array [J].
Wu, Xuehan ;
Shao, Huaizong ;
Lin, Jingran ;
Pan, Ye ;
Xiong, Weijie .
ENTROPY, 2025, 27 (04)
[32]   Beamforming in the Generation of Range-Time-Dependent Orbital Angular Momentum Based on the Circular Frequency Diverse Array [J].
Ge, Jiaang ;
Xie, Junwei .
FRONTIERS IN PHYSICS, 2022, 10
[33]   Microwave link rainfall estimation: Effects of link length and frequency, temporal sampling, power resolution, and wet antenna attenuation [J].
Leijnse, H. ;
Uijlenhoet, R. ;
Stricker, J. N. M. .
ADVANCES IN WATER RESOURCES, 2008, 31 (11) :1481-1493
[34]   Peculiarities of using space-time multi-frequency signals for fast electronic scanning in radars with active phased antenna array [J].
Sedyshev Yu.N. ;
Sedyshev P.Yu. ;
Tyutyunnik V.A. ;
Shevchenko A.F. .
Radioelectronics and Communications Systems, 2010, 53 (04) :173-184