High-efficiency RF digital power amplifier with joint duty-cycle/amplitude modulation |
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| 申请号 | US15420109 | 申请日 | 2017-01-31 | 公开(公告)号 | US10135409B1 | 公开(公告)日 | 2018-11-20 |
| 申请人 | Marvell International Ltd.; | 发明人 | David Cousinard; Renaldi Winoto; | ||||
| 摘要 | A power amplifier includes an array of transistors having outputs that are connected in parallel to one another and coupled to an output network. The power amplifier further includes digital circuitry, configured to receive a sequence of control words that specify respective amplitudes of a signal to be transmitted in respective time intervals, and to transmit the signal by performing, for each control word and respective time interval: partitioning the control word into a Least Significant Bit (LSB) portion and a Most Significant Bit (MSB) portion; selecting a time duration based on the LSB portion; selecting an amplitude based on the MSB portion; and activating the array of transistors during the time interval in accordance with the selected time duration and the selected amplitude. | ||||||
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