| 摘要 |
A power amplifier circuit for a peak envelope modulation of a high frequency signal is provided to reduce the loss of power and to improve the distortion of signals by generating a power amplified signal by the envelope modulation of the high frequency signal. A power amplifier circuit for peak envelope modulation of a high frequency signal includes a transformer(TF), and a transistor(Q51). The transformer receives a first signal over a predetermined level, selected from the envelope of a carrier signal, and generates a conversion signal. The transistor operates based on the conversion signal, receives a second signal having a predetermined DC component, generated based on the carrier signal, and amplifies the second signal according to the conversion signal to generate an output signal.
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