| 摘要 |
Embodiments of the present invention provide an amplifier circuit and method that can be used to save power or reduce distortion in an electronic system, such as a wireless communication system. In one embodiment, the present invention includes an amplifier circuit comprising a transistor having a gate terminal, drain terminal, body terminal, and a load. An input signal has different signal envelopes during different time periods. A control signal coupled to the body terminal is used to change the voltage on the body terminal when the input receives different envelopes. Accordingly, the amplifier can be biased to use less power when lower envelopes are being received. Electronic systems, such as wireless communication systems, can realize advantageous performance enhancements by utilizing the amplifier and other techniques employed by embodiments of the present invention. |
