MULTI-RECEIVER RADIOMETER FOR MEASURING ABYSSAL TEMPERATURE OF OBJECT (RADIO THERMOMETER) Russian patent published in 2016 - IPC G01K13/00 

FIELD: radio engineering, communication.

SUBSTANCE: radiometer comprises an antenna, series-connected directional coupler, circulator, receiver, synchronous low-pass filter, high-pass filter, comparator, the second input of which is connected to the common bus of the radiometer, and the second input of the circulator is connected to a first matched load, a switch, first and second outputs of which are connected to like inputs of the directional coupler, and the first, second and third inputs are connected to the second, third matched loads and to the output of series-connected current source and noise generator. The directional coupler, circulator, switch, noise generator, current source and matched loads are mounted on a temperature-controlled board and are in thermal contact with said board. The radiometer also includes a microcontroller, a selector, n-1 series-connected directional couplers, circulators, receivers, synchronous low-pass filters, high-pass filters, comparators and n-1 switches. The directional coupler, circulator, switch, noise generator, current source and matched loads are mounted on a temperature-controlled board and are in thermal contact with said board.

EFFECT: high fluctuation sensitivity and reliability of operation.

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