Power control protection circuit of power amplifier
The invention discloses a power control protection circuit of a power amplifier. The power control protection circuit comprises a radio frequency signal source, a gain control unit, a first coupling circuit, the power amplifier and a second coupling circuit which are sequentially connected in series...
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| Hauptverfasser: | , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a power control protection circuit of a power amplifier. The power control protection circuit comprises a radio frequency signal source, a gain control unit, a first coupling circuit, the power amplifier and a second coupling circuit which are sequentially connected in series through input and output ends, the power control protection circuit further comprises a first detection circuit, a second detection circuit, a power comparison module and a control center. The output ends of the first detection circuit and the second detection circuit are respectively connected to the input end of the power comparison module; the output end of the power comparison module is connected to the input end of the control center, and the output end of the control center is connected to the signal end of the gain control unit; the power comparison module is used for calculating the power offset according to the output of the first detection circuit and the second detection circuit, and the control center |
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