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文件名称：A Fully Integrated 320 GHz Coherent Imaging Transceiver in 130 nm SiGe BiCMOS
文件大小：5.3MB
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更新时间：2022-04-21 02:31:06
THz
A 320 GHz fully integrated terahertz imaging
system is reported. The system is composed of a phaselocked
high-power transmitter and a coherent high-sensitivity
subharmonic-mixing receiver, which are fabricated using a
130 nm SiGe BiCMOS technology ( fT / fmax = 220/280 GHz).
To enhance the imaging sensitivity, a heterodyne coherent detection
scheme is utilized. To obtain frequency coherency, fully
integrated phase-locked loops are implemented on both the
transmitter and receiver chips. According to the measurement
results, consuming a total dc power of 605 mW, the transmitter
chip achieves a peak radiated power of 2 mW and a peak
EIRP of 21.1 dBm. The receiver chip achieves an equivalent
incoherent responsivity of more than 7.26 MV/Wand a sensitivity
of 70.1 pW under an integration bandwidth of 1 kHz, with a total
dc power consumption of 117 mW. The achieved sensitivity with
this proposed coherent imaging transceiver is around ten times
better compared with other state-of-the-art incoherent imagers.
To the best of our knowledge, this paper demonstrates the first
fully integrated coherent terahertz imaging transceiver on silicon.