A SiGe 8-Channel Comparator for Application in a Synthetic Aperture Radiometer
Paper in proceedings, 2013

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.


Erik J Ryman

Chalmers, Computer Science and Engineering (Chalmers), Computer Engineering (Chalmers)

Stefan Andersson

Omnisys Instruments

Johan Riesbeck

Omnisys Instruments

Slavko Dejanovic

Omnisys Instruments

Anders Emrich

Omnisys Instruments

Per Larsson-Edefors

Chalmers, Computer Science and Engineering (Chalmers), Computer Engineering (Chalmers)

Proceedings - IEEE International Symposium on Circuits and Systems

02714310 (ISSN)

845-848 6571979

Areas of Advance

Information and Communication Technology


Basic sciences

Driving Forces

Innovation and entrepreneurship

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering





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9/6/2018 1