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A SiGe 8-Channel Comparator for Application in a Synthetic Aperture Radiometer

Erik Ryman (Institutionen för data- och informationsteknik, Datorteknik (Chalmers)) ; Stefan Andersson ; Johan Riesbeck ; Slavko Dejanovic ; Anders Emrich ; Per Larsson-Edefors (Institutionen för data- och informationsteknik, Datorteknik (Chalmers))
Proceedings of IEEE International Symposium on Circuits and Systems (ISCAS), Beijing, China, May 19-23 2013 (0271-4310). p. 845-848. (2013)
[Konferensbidrag, refereegranskat]

We present a high-speed low-power 8-channel comparator tailored for the application of sampling antenna signals in a cross-correlator system for space-borne synthetic aperture radiometer instruments. Features like clock return path, per-channel offset calibration and bias current tuning make the comparator adaptable and gives the possibility to adjust the comparator for low power consumption, while keeping performance within the requirements of the cross-correlator system. The comparator has been implemented and fabricated in a 130-nm SiGe BiCMOS process. Measurements show that the comparator can perform sampling at a rate of 4.5 GS/s with a power consumption of 48 mW/channel or 1 GS/s with a power consumption of 17 mW/channel.

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Denna post skapades 2013-05-22. Senast ändrad 2016-09-14.
CPL Pubid: 177252


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