A SiGe 8-Channel Comparator for Application in a Synthetic Aperture Radiometer
Paper i proceeding, 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, Data- och informationsteknik, Datorteknik

Stefan Andersson

Omnisys Instruments AB

Johan Riesbeck

Omnisys Instruments AB

Slavko Dejanovic

Omnisys Instruments AB

Anders Emrich

Omnisys Instruments AB

Per Larsson-Edefors

Chalmers, Data- och informationsteknik, Datorteknik

Proceedings - IEEE International Symposium on Circuits and Systems

02714310 (ISSN)

845-848 6571979


Informations- och kommunikationsteknik


Grundläggande vetenskaper


Innovation och entreprenörskap


Annan elektroteknik och elektronik