NDLI: Compact Doppler sensor operating at 31-32 GHz using a SiGe HBT MMIC and patch antennas

Content Provider	IEEE Xplore Digital Library
Author	Abele, R. Trasser, A. Schad, K.-B. Sonmez, E. Schumacher, H.
Copyright Year	2004
Description	Author affiliation: Dept. of Electron Devices & Circuits, Ulm Univ., Germany (Abele, R.; Trasser, A.; Schad, K.-B.; Sonmez, E.; Schumacher, H.)
Abstract	This paper describes a compact Doppler sensor consisting of a SiGe MMIC and patch antennas for transmitting and receiving. The MMIC has a differential oscillator operating at 31-32 GHz and a single balanced Gilbert cell mixer. For the differential oscillator lumped elements are used and the Gilbert cell mixer serves two purposes. First it generates the difference frequency of the transmitted and received signal, secondly it lets the RF-signal pass. This results in a total chip size of only 380 /spl times/ 770 /spl mu/m/sup 2/. On the microwave laminate substrate TMM3 patch antennas are realized, one for receiving and two for transmitting. The pads for the MMIC are prepared with solder bumps. This way the MMIC can be flip-chip mounted to the substrate of the patch antennas resulting in low losses at the interconnects.
Sponsorship	IEEE Microwave Theory and Techniques Soc. Georgia Electron. Design Center at Georgia Tech. NASA Glenn Res. Center
Starting Page	65
Ending Page	68
File Size	864632
Page Count	4
File Format	PDF
ISBN	0780387031
DOI	10.1109/SMIC.2004.1398168
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Silicon germanium Germanium silicon alloys Heterojunction bipolar transistors MMICs Patch antennas Oscillators Sensor phenomena and characterization Signal generators Frequency Laminates
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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