Active Backscatter Transponder for FMCW Radar Applications

被引：8
|
作者：
Lorenzo, J. [1 ]
Lazaro, A. [1 ]
Villarino, R. [1 ]
Girbau, D. [1 ]
机构：
[1] Univ Rovira & Virgili, Elect Elect & Automat Engn Dept, E-43007 Tarragona, Spain
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2015年 / 14卷
关键词：
Frequency-modulated continuous-wave (FMCW) radar; RFID; transponder; ANTENNA;
D O I：
10.1109/LAWP.2015.2414295
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：
This letter presents a low-cost wideband active backscatter transponder at X-band suitable for frequency-modulated continuous-wave (FMCW) radar applications. In order to maximize its read range, the radar cross section (RCS) of the transponder is increased by means of a two-stage amplifier based on high electron mobility transistors (HEMT), which is connected between two (one receiver and one transmitter) bowtie antennas. To distinguish the transponder response from stationary clutter it modulates the level of its RCS modifying the bias of the transistors. The backscattered response of the transponder is collected using a FMCW commercial radar. The transponder achieves a bandwidth of 7-12 GHz, with a gain between 18-22 dB, and a power consumption of 75 mW. Theoretical operation and experimental results are presented.
引用
收藏
页码：1610 / 1613
页数：4
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