论文信息 - A 0.32 THz FMCW radar system based on low-cost lens-integrated SiGe HBT front-ends

A 0.32 THz FMCW radar system based on low-cost lens-integrated SiGe HBT front-ends

This paper presents a 0.32 THz high-resolution radar system for short-range applications. It utilizes a homodyne FMCW radar architecture based on a low-cost SiGe HBT chip-set. It is implemented in a 0.13-μm SiGe engineering technology version with cutoff frequencies fT /fmax of 300/350 GHz and offers lens-integrated on-chip antennas. The measured maximum radiated power of the packaged transmitter is -5 dBm (14 dBm EIRP) at 0.311 THz. The 6-dB operational bandwidth of the chip-set is 27 GHz around the center frequency of 0.325 THz. The conversion gain of the receiver including antenna efficiency is -16 to -8 dB and its noise figure is 30-37 dB over the operational bandwidth. The FMCW radar functionality is demonstrated in a face-to-face chip-set configuration.

[1] Ali M. Niknejad,et al. A 0.38 THz Fully Integrated Transceiver Utilizing a Quadrature Push-Push Harmonic Circuitry in SiGe BiCMOS , 2012, IEEE Journal of Solid-State Circuits.

[2] K. Aufinger,et al. A 160-GHz Subharmonic Transmitter and Receiver Chipset in an SiGe HBT Technology , 2012, IEEE Transactions on Microwave Theory and Techniques.

[3] F. Harris. On the use of windows for harmonic analysis with the discrete Fourier transform , 1978, Proceedings of the IEEE.

[4] Cunlin Zhang,et al. Compact continuous-wave subterahertz system for inspection applications , 2005 .

[5] Nuria Llombart,et al. THz Imaging Radar for Standoff Personnel Screening , 2011, IEEE Transactions on Terahertz Science and Technology.

[6] N. Llombart,et al. Penetrating 3-D Imaging at 4- and 25-m Range Using a Submillimeter-Wave Radar , 2008, IEEE Transactions on Microwave Theory and Techniques.

[7] Chen-To Tai,et al. An approximate formula for calculating the directivity of an antenna , 1976 .

[8] M. Skolnik,et al. Introduction to Radar Systems , 2021, Advances in Adaptive Radar Detection and Range Estimation.

[9] D. Mittleman. Sensing with terahertz radiation , 2003 .

[10] Lorenz-Peter Schmidt,et al. Hardware realization of a 2 m × 1 m fully electronic real-time mm-wave imaging system , 2012 .

[11] E Öjefors,et al. Active 220- and 325-GHz Frequency Multiplier Chains in an SiGe HBT Technology , 2011, IEEE Transactions on Microwave Theory and Techniques.