| 摘要 |
A digitally-controlled power amplifier (100, 200, 300) with bandpass filtering includes a radio-frequency clock input (102, 202), an amplitude control word input (104, 204), and a plurality of digitally-controlled power amplifier cells (107_1, 107_M, 109 - 1, 109 - N, 21 1, 213, 21 5, 217, 31 1, 1400). The radio-frequency clock input (102, 202) is arranged for receiving a radio-frequency clock. The amplitude control word input (104, 204) is arranged for receiving a digital amplitude control word signal. The digitally-controlled power amplifier cells (107_1, 107_M, 109_1 , 109_N, 21 1 , 213, 21 5, 21 7, 31 1 , 1400) are coupled to the radio-frequency clock and the digital amplitude control word signal, wherein at least one of the digitally-controlled power amplifier cells (1400) is gradually turned on and off in response to at least one bit of the digital amplitude control word signal. |
