RF power amplifiers (RF PAs) are an important part of a variety of wireless transmitters. In the pre-stage circuit of the transmitter, the RF signal generated by the modulating oscillating circuit has a small power, and needs to pass through a series of amplification-buffering stage, intermediate amplification stage, and final stage power amplification stage, and after obtaining sufficient RF power, it can feed. Radiate out onto the antenna. In order to obtain a sufficiently large RF output power, an RF power amplifier must be used.
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