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A 24 GHz wideband monostatic FMCW radar system based on a single-channel SiGe bipolar transceiver chip

Published online by Cambridge University Press:  23 April 2013

Christian Bredendiek ,
Nils Pohl ,
Timo Jaeschke ,
Sven Thomas ,
Klaus Aufinger  and
Attila Bilgic
Christian Bredendiek*
Affiliation:
Ruhr-University Bochum, Institute for Integrated Systems, D-44780, Bochum, Germany. Phone: +49 234 32 27980
Nils Pohl
Affiliation:
Fraunhofer FHR, D-53343 Wachtberg, Germany
Timo Jaeschke
Affiliation:
Ruhr-University Bochum, Institute for Integrated Systems, D-44780, Bochum, Germany. Phone: +49 234 32 27980
Sven Thomas
Affiliation:
Ruhr-University Bochum, Institute for Integrated Systems, D-44780, Bochum, Germany. Phone: +49 234 32 27980
Klaus Aufinger
Affiliation:
Infineon Technologies AG, D-85579 Neubiberg, Germany
Attila Bilgic
Affiliation:
KROHNE Messtechnik, D-47058 Duisburg, Germany
*
Corresponding author: C. Bredendiek Email: christian.bredendiek@rub.de
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Abstract

In this paper a monostatic frequency-modulated continuous-wave (FMCW) radar system around a center frequency of 24 GHz with a wide tuning range of 8 GHz (≈33%) is presented. It is based on a fully integrated single-channel SiGe transceiver chip. The chip architecture consists of a fundamental VCO, a receive mixer, a divider chain, and coupling/matching networks. All circuits, except for the divider, are designed with the extensive use of on-chip monolithic integrated spiral inductors. The chip is fabricated in a SiGe bipolar production technology which offers an fT of 170 GHz and fmax of 250 GHz. The phase noise at 1 MHz offset is better than −100 dBc/Hz over the full-tuning range of 8 GHz and a phase noise of better than −111 dBc/Hz is achieved at 27 GHz. The peak output power of the chip is −1 dBm while the receive mixer offers a 1 dBm input referred compression point to keep it from being saturated. The chip has a power consumption of 245 mW and uses an area of 1.51 mm2. The FMCW radar system achieves a power consumption below 1.6 W. Owing to the high stability of the sensor, high accuracy mesaurements with a range error <±250 µm were achieved. The standard deviation between repeated measurements of the same target is 0.6 µm and the spatial resolution is 28 mm.

Keywords

Radar Architecture and SystemsSI-based Devices and IC Technologies
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 5 , Special Issue 3: European Microwave Week 2012 , June 2013 , pp. 309 - 317
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013 

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References

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