Radio frequency power amplifier, radio frequency front-end module and electronic equipment

Abstract

The embodiment of the invention provides a radio frequency power amplifier, a radio frequency front-end module and electronic equipment, in a preset mode, the radio frequency power amplifier is used for processing radio frequency signals of different frequency bands with a second radio frequency power amplifier, the radio frequency power amplifier comprises a first differential amplification circuit, a second differential amplification circuit and an inter-stage matching circuit, the inter-stage matching circuit is connected between the output end of the first differential amplification circuit and the input end of the second differential amplification circuit, and the inter-stage matching circuit comprises a series resonance unit; the series resonance unit comprises a first inductor and a first capacitor which are connected in series, and the resonance frequency of the series resonance unit is within the working frequency band of the second radio frequency power amplifier. According to the radio frequency power amplifier, the out-of-band noise suppression performance of the radio frequency power amplifier can be improved, the series resonance unit can further perform impedance matching between the first differential amplification circuit and the second differential amplification circuit, and noise of the first differential amplification circuit can be prevented from being transmitted to the second differential amplification circuit.

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