发明名称 |
Timing alignment for modulated supply |
摘要 |
There is disclosed a method, in an amplifier stage comprising an amplifier and a modulated supply, the amplifier being arranged to amplify an input signal and the modulated supply being arranged to generate a supply voltage for the amplifier by tracking an envelope of the signal to be amplified, the method comprising: comparing the relative timing of a signal representing the current drawn by the amplifier from the modulated supply and a signal representing the voltage generated at the output of the modulated supply; and in dependence upon a difference in the relative timing, adjusting the timing of either the input signal to be amplified or the generated supply voltage to reduce the difference in the relative timing. |
申请公布号 |
US8854129(B2) |
申请公布日期 |
2014.10.07 |
申请号 |
US201113640873 |
申请日期 |
2011.04.12 |
申请人 |
Nujira Limited |
发明人 |
Wilson Martin Paul |
分类号 |
H03G3/20;H03F1/02;H03G3/00 |
主分类号 |
H03G3/20 |
代理机构 |
Kaplan Breyer Schwarz & Ottesen, LLP |
代理人 |
Kaplan Breyer Schwarz & Ottesen, LLP |
主权项 |
1. A method, in an amplifier stage comprising an amplifier and a modulated supply, the amplifier being arranged to amplify an input signal and the modulated supply being arranged to generate a supply voltage for the amplifier by tracking an envelope of the signal to be amplified, the method comprising:
comparing the relative timing of a signal representing the current drawn by the amplifier from the modulated supply and a signal representing the voltage generated at the output of the modulated supply; and in dependence upon a difference in the relative timing, adjusting the timing of either the input signal to be amplified or the generated supply voltage to reduce the difference in the relative timing. |
地址 |
GB |