A Millimeter-Wave Low-Power Active Backscatter Tag for FMCW Radar Systems
A Millimeter-Wave Low-Power Active Backscatter Tag for FMCW Radar Systems
复制标题
DOI：
10.1109/tmtt.2013.2252915
复制
发表时间：
2013-04
影响因子：
4.3
通讯作者：
A. Strobel;C. Carlowitz;R. Wolf;F. Ellinger;M. Vossiek
中科院分区：
文献类型：
--
作者：
A. Strobel;C. Carlowitz;R. Wolf;F. Ellinger;M. Vossiek
本文提出了一种基于开关注入锁定振荡器（筒仓）原理的全集成有源后向散射转发器，用于调频连续波雷达。此外，一种方法来表征筒仓放大器的扩展和利用测量的系统参数的反向散射标签，工作在34.45 GHz的。它是数字可调谐的32.7至35.4 GHz，并达到5 dBm的非脉冲输出功率。高于注入功率电平$-\hbox{53 dBm}$时，筒仓标签在其最大输出功率下响应相位相干。在系统测量中，筒仓反向散射应答器用于在0.7至11.5 m的范围内进行距离测量。在强多径环境中，平均测距误差为7 cm，标准差为10 cm，取得了良好的效果。单次测量精度小于3 mm。
In this paper, a fully integrated active backscatter transponder based on the switched injection-locked oscillator (SILO) principle for frequency-modulated continuous-wave radar applications is presented. Furthermore, a method to characterize a SILO amplifier is extended and utilized to measure the system parameters of the presented backscatter tag that operates at 34.45 GHz. It is digitally tunable from 32.7 to 35.4 GHz and reaches an unpulsed output power of 5 dBm. Above injection power levels of $-\hbox{53 dBm}$, the SILO tag responds phase coherent at its maximum output power. In system measurements, the SILO backscatter transponder was used to perform distance measurements at ranges from 0.7 to 11.5 m. A remarkably good mean distance measurement error of 7 cm with a standard deviation of 10 cm was achieved in a strong multipath environment. The single measurement precision is below 3 mm.