| 摘要 |
A power amplifying apparatus based on envelope elimination and restoration (EER) includes a voltage amplifier to amplify a high frequency component of an envelope signal, a switching amplifier to generate a low frequency component signal of a drain bias based on a first pulse width modulation (PWM) signal that corresponds to a low frequency component of the envelope signal, and a push-pull switch, connected to the switching amplifier in parallel, to add a high frequency component signal to an output of the switching amplifier by pushing or pulling current to or from the output of the switching amplifier. |
