Design and Analysis of a W-band 9-Element Imaging Array Receiver Using Spatial-Overlapping Super-Pixels in Silicon
作者： Francis Caster , Leland Gilreath , Shiji Pan , Zheng Wang , Filippo Capolino
DOI: 10.1109/JSSC.2014.2310744
关键词:
摘要: A W-band direct-detection-based receiver array is presented using a new concept of spatial-overlapping super-pixels for millimeter-wave imaging applications in an advanced 0.18 µm BiCMOS process. The use results 1) improved SNR at the pixel level through reduction spillover losses, 2) partially correlated adjacent super-pixels, 3) 2×2 window averaging function RF domain, 4) ability to compensate systematic phase delay and amplitude variations due off-focal-point effect antennas away from focal point, 5) mutual coupling effects among elements. chip achieves measured peak coherent responsivity 1,150 MV/W, incoherent 1,000 minimum NEP 0.28 fW/Hz $^{1/2}$ front-end 3-dB bandwidth 87–108 GHz, while consuming 225 mW per element. NETD SiGe 0.45 K with 20 ms integration time.
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