RADIOMETER FOR MICROWAVE RECEIVER AND METHOD FOR MEASURING TEMPERATURE OF OBJECT THEREOF

摘要

A radiometer for a microwave receiver according to an embodiment of the present invention comprises: an antenna line through which radiation power corresponding to the temperature of a detection body is received from an antenna; a first reference rod having a pre-fixed first reference temperature; a second reference rod having a second reference temperature fixed in advance; a first microwave switch for selectively switching the antenna line, the first reference load, and the second reference load; a second microwave switch switched with the same clock as the first microwave switch; a demodulator for multiplying a signal output from the second microwave switch by a predetermined gain value and outputting it; an integrator for integrating the signal output from the demodulator; and a controller configured to measure the temperature of the probe based on a signal output from the integrator.