A 210-270-GHz Circularly Polarized FMCW Radar With a Single-Lens-Coupled SiGe HBT Chip
A 210-270-GHz Circularly Polarized FMCW Radar With a Single-Lens-Coupled SiGe HBT Chip
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DOI：
10.1109/tthz.2016.2602539
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发表时间：
2016-11-01
影响因子：
3.2
通讯作者：
Pfeiffer, Ullrich R.
中科院分区：
文献类型：
--
作者：
Grzyb, Janusz;Statnikov, Konstantin;Pfeiffer, Ullrich R.
本文介绍了一种全圆极化210-270 GHz调频连续波单基地零差体制雷达。它由一个高度集成的射频收发器模块、一个内部开发的线性频率啁啾发生器和一个数据采集链组成。雷达前端具有基本操作的x16乘法器链架构实现为一个单一的芯片在0.13 μ m的硅锗异质结双极晶体管技术与透镜耦合圆极化片上天线和引线键合在一个低成本的印刷电路板。与9 mm直径硅透镜相结合，该模块实现了26.6 dB的平均带内方向性。封装后的雷达模块的实测峰值辐射功率为+5 dBm，噪声系数为21 dB。对于一个60 GHz的频率扫描，雷达校准后达到了2.57毫米的距离分辨率，这是接近的理论带宽限制的分辨率为2.5毫米。通过一个简单的扫描光学设置，本文进一步证明了三维成像能力的雷达检测隐藏的物体具有显着的动态范围约为50分贝。
A complete circularly polarized 210-270-GHz frequency-modulated continuous-wave radar with a monostatic homodyne architecture is presented. It consists of a highly integrated radio-frequency transceiver module, an in-house developed linear-frequency chirp generator, and a data acquisition chain. The radar front end featuring a fundamentally operated x16 multiplier-chain architecture is realized as a single chip in 0.13-mu m SiGe heterojunction bipolar transistor technology with a lens-coupled circularly polarized on-chip antenna and wire-bonded on a low-cost printed circuit board. In combination with a 9-mm-diameter silicon lens, the module achieves an average in-band directivity of 26.6 dB. The measured peak radiated power from the packaged radar module is +5 dBm and the noise figure is 21 dB. For a 60-GHz frequency sweep, the radar achieves a range resolution of 2.57 mm after calibration, which is close to the theoretical bandwidth-limited resolution of 2.5 mm. With a simple scanning optical setup, this paper further demonstrates the 3-D imaging capability of the radar for detection of hidden objects with a remarkable dynamic range of around 50 dB.