A novel Dicke microwave radiometer without temperature control for reference match load

摘要

Dicke microwave radiometer usually adopts one reference match load of constant desired temperature. In the paper, a novel Dicke microwave radiometer without temperature control for reference match load is presented. We choose to monitor the physical temperature of reference match load instead of to keep it constant, so the structure of the reference match load is simplified greatly. At the same time, the accuracy and stability of the radiometer are both improved because the accuracy of measuring reference match load's temperature is better than keeping its temperature nowadays. At last, an XC band Dicke microwave radiometer is designed, and some experiments of brightness temperature measurement are performed, which verified the principle of this kind of Dicke microwave radiometer.