Programmable sweep radiometer system as a new tool for non-invasive thermometry.
A new microwave radiometer system consisting of a frequency sweep-type radiometer and an ultra wideband antenna has been developed. A computer-controlled radiometer system covers the input frequency range from 0.5 GHz to 8 GHz. It can be used not only as a multispectral radiometer system whose frequencies can be chosen freely, but also as a frequency sweep-type radiometer system whose frequency is continuously swept during measurement. When an antenna is attached to a forearm, the sensitivity of the radiometer system exceeds 0.09 degree C when the integration time is 3 sec and IF bandwidth is 500 MHz. The new microwave radiometer system may be utilized for non-invasive thermometry of the human body.
Miyakawa
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M
Department of Information Engineering, Faculty of Engineering, Niigata University, Japan.
D006801:Humans; D008872:Microwaves; D011874:Radiometry / Q000295:instrumentation / Q000379:methods; D013821:Thermometers