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A SiGe-based fully-integrated 122-GHz FMCW radar sensor in an eWLB package

Published online by Cambridge University Press:  10 February 2017

Muhammad Furqan ,
Faisal Ahmed ,
Reinhard Feger ,
Klaus Aufinger ,
Walter Hartner  and
Andreas Stelzer
Muhammad Furqan*
Affiliation:
Johannes Kepler University Linz, Altenberger Str. 69, 4040 Linz, Austria. Phone: +43 732 2468 6409
Faisal Ahmed
Affiliation:
Johannes Kepler University Linz, Altenberger Str. 69, 4040 Linz, Austria. Phone: +43 732 2468 6409
Reinhard Feger
Affiliation:
Johannes Kepler University Linz, Altenberger Str. 69, 4040 Linz, Austria. Phone: +43 732 2468 6409
Klaus Aufinger
Affiliation:
Infineon Technologies, Am Campeon, 85579 Neubiberg, Germany
Walter Hartner
Affiliation:
Infineon Technologies, Wernerwerk Str. 2, 93049 Regensburg, Germany
Andreas Stelzer
Affiliation:
Johannes Kepler University Linz, Altenberger Str. 69, 4040 Linz, Austria. Phone: +43 732 2468 6409
*
Corresponding author: M. Furqan Email: m.furqan@nthfs.jku.at
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Abstract

High-performance SiGe HBTs and advancements in packaging processes have enabled system-in-package (SiP) designs for millimeter-wave applications. This paper presents a 122-GHz bistatic frequency modulated continuous wave (FMCW) radar SiP. The intended applications for the SiP are short-range distance and angular position measurements as well as communication links between cooperative radar stations. The chip is realized in a 130-nm SiGe BiCMOS technology and is based on a fully differential frequency-multiplier chain with in phase quadrature phase receiver and a binary phase shift keying modulator in the transmit chain. On-wafer measurement results show a maximum transmit output power of 2.7 dBm and a receiver gain of 11 dB. The chip consumes a DC power of 570 mW at a supply voltage of 3.3 V. The fabricated chip is integrated in an embedded wafer level ball grid array (eWLB) package. Transmit/receive rhombic antenna arrays with eight elements are designed in two eWLB packages with and without backside metal, with a measured peak gain of 11 dBi. The transceiver chip size is 1.8 mm × 2 mm, while the package size is 12 mm × 6 mm, respectively. FMCW measurements have been conducted with a sweep bandwidth of up to 17 GHz and a measured range resolution of 1.5 cm has been demonstrated. 2D positions of multiple targets have been computed using two coherently linked radar stations.

Keywords

RadarSemiconductor devices and IC-technologiesmm-wave SiGe HBTs
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Special Issue 6: EuMW 2016 Special Issue , July 2017 , pp. 1219 - 1230
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2017 

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