| 摘要 |
According to one embodiment, a power amplification device configured to switching-amplify a high-frequency input signal into an output signal includes a feedback circuit, a subtractor, a comparator, an output tuning circuit, a constant voltage controlled power supply, and an amplifier. The feedback circuit is configured to output a portion of the output signal as a feedback signal. The subtractor is configured to output a difference between the input signal and the feedback signal as a error signal. The comparator is configured to generate an on/off pulse signal by comparing the error signal with a predetermined threshold voltage. The output tuning circuit is configured to resonate to a frequency of the input signal. The amplifier is configured to generate the output signal by switching-amplifying the input signal according to on/off of pulse signal, and output the output signal to the output tuning circuit.
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