DocumentCode :
631151
Title :
An SiGe-chip-based 80 GHz FMCW-radar system with 25 GHz bandwidth for high resolution imaging
Author :
Pohl, Nils ; Jaeschke, Timo ; Vogt, Mirko
Author_Institution :
Fraunhofer FHR, Bochum, Germany
Volume :
1
fYear :
2013
fDate :
19-21 June 2013
Firstpage :
239
Lastpage :
244
Abstract :
Existing SAR systems are often limited in resolution by their small bandwidth of below 10 GHz. In this contribution an ultra-wideband 80 GHz FMCW radar sensor for SAR imaging with 25.6 GHz bandwidth is presented. It is based on a custom low-power SiGe-MMIC including all high frequency components, using a nested PLL concept in combination with off-the-shelf PLL synthesizer ICs. In single direction radar measurments, a resolution of 8.09mm is shown. Additionally, results of SAR measurements with a point target show that a good spatial resolution of 12.0 mm × 8.1 mm (Tukey window, α = 0.25, -6 dB width) is achieved. Furthermore, high resolution SAR images of a bike acquired with the sensor are presented.
Keywords :
CW radar; FM radar; Ge-Si alloys; MMIC; phase locked loops; radar imaging; synthetic aperture radar; ultra wideband radar; FMCW-radar system; SAR imaging; SAR measurements; SiGe; SiGe-chip; bandwidth 25 GHz; bandwidth 25.6 GHz; custom low-power SiGe-MMIC; frequency 80 GHz; high frequency component; high resolution imaging; nested PLL concept; off-the-shelf PLL synthesizer IC; single direction radar measurment; spatial resolution; Bandwidth; Image resolution; Phase locked loops; Radar antennas; Radar imaging; Synthetic aperture radar;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Radar Symposium (IRS), 2013 14th International
Conference_Location :
Dresden
Print_ISBN :
978-1-4673-4821-8
Type :
conf
Filename :
6581094
Link To Document :
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