Abstract
The temperature sensitivity of a radiometer with a Josephson junction mixer at the input was experimentally determined to be better than that of existing radiometers with Shottky diode mixers in the short millimeter waveband range, but worse by 10 to 15 db than follows from the theory. The temperature sensitivity can be reduced by approximately an order of magnitude by optimization of the amplifier parameters and by shunting the junction with a ''cold'' resistance. (auth)
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