Phase shifters for gallium nitride amplifiers and related methods
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United States of America Patent
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Jun 15, 2021
Grant Date -
Feb 27, 2020
app pub date -
Jun 12, 2019
filing date -
Oct 14, 2016
priority date (Note) -
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Abstract
Circuits for protecting devices, such as gallium nitride (GaN) devices, and operating methods thereof are described. Such circuits may include a temperature sensor configured to sense the temperature of at least a portion of a device, and a phase shifter configured to shift the phase of the signal output by the device, when the sensed temperature is outside a safe temperature range, e.g., above a predefined temperature threshold. The phase may be shifted discretely or continuously. These circuits safeguard devices from damaging operating conditions to prolong the operating life of the protected devices.
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