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US 2022/0385241 A1Published application
Power Amplifier Capable of Maintaining Constant Gain Regardless of Temperature Variations
AssigneeRichWave Technology Corp.
InventorsTien-Yun Peng, Chih-Sheng Chen
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Abstract
A power amplifier includes a transistor, a temperature sensor and a filter. The transistor is used to receive a bias signal and amplify a radio frequency (RF) signal. The temperature sensor is arranged in proximity to the transistor, and is used to detect a temperature of the transistor to provide a voltage signal at a control node accordingly. The filter is coupled to the temperature sensor and is used to filter the voltage signal to generate a filtered voltage. The bias signal is adjusted according to the filtered voltage.
Claims20
A power amplifier comprising:
- a first transistor configured to receive a bias signal and amplify a radio frequency (RF) signal;
- a temperature sensor arranged in proximity to the first transistor, and configured to detect a temperature of the first transistor to provide a first voltage signal at a control node accordingly;
- and
- a first filter coupled to the temperature sensor and configured to filter the first voltage signal to generate a filtered voltage;
- wherein the bias signal is adjusted according to the filtered voltage.
2 more elements
Dependencies are inferred from the claim text.