Title :
Characterization of a 94 GHz radiometric imager with mechanical beam-scanning
Author :
Nova, E. ; Abril, J. ; Romeu, J. ; Broquetas, A. ; Torres, F. ; Jofre, L.
Author_Institution :
Dept. Signal Theor. & Commun., Univ. Politec. de Catalunya (UPC), Barcelona, Spain
Abstract :
This paper presents the characterization in terms of spatial resolution and radiometric sensitivity of a W-band Total Power Radiometer (TPR). The TPR is based on a heterodyne receiver with 64 dB of gain and 6.5 dB of noise figure. An antenna system consisting on a pan-tilt scanner has been designed and built in order to aim a 100 mm offset parabolic reflector. With this system, relative temperature images of targets at a 1 m standoff range are obtained in indoor environments with an spatial resolution of 4 cm.
Keywords :
image resolution; millimetre wave imaging; radio receivers; radiometers; radiometry; reflector antennas; W-band TPR; W-band total power radiometer; antenna system; distance 1 m; frequency 94 GHz; gain 64 dB; heterodyne receiver; mechanical beam-scanning; noise figure 6.5 dB; offset parabolic reflector; pan-tilt scanner; radiometric imager; radiometric sensitivity; spatial resolution; Microwave radiometry; Noise; Receivers; Resistors; Temperature measurement; Temperature sensors;
Conference_Titel :
Microwave Workshop Series on Millimeter Wave Integration Technologies (IMWS), 2011 IEEE MTT-S International
Conference_Location :
Sitges
Print_ISBN :
978-1-61284-963-8
DOI :
10.1109/IMWS3.2011.6061865
