GAIN COMPENSATION FOR POWER AMPLIFIERS USING A TEMPERATURE SENSOR CIRCUIT
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United States of America Patent
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Issued Date -
Apr 20, 2023
app pub date -
Oct 12, 2022
filing date -
Oct 12, 2022
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Abstract
According to at least one example, an amplifier circuit includes an amplifier and a temperature sensor circuit. The temperature sensor circuit includes a first transistor thermally isolated from the amplifier and being configured to sense an ambient temperature, and a second transistor thermally linked to the amplifier and being configured to sense a temperature at the amplifier, the temperature sensor circuit being a differential circuit having a first path and a second path with the first and second transistors being arranged on the first and second paths of the differential circuit respectively. The temperature sensor circuit is configured to generate an output voltage inversely proportional to a temperature difference between the ambient temperature and the temperature at the amplifier.
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