发明名称 |
REDUCED DISTORTION RADIO FREQUENCY AMPLIFIERS |
摘要 |
<p>A radio frequency power amplifier system includes a power amplifier coupled to an input signal and configured to provide an output signal at a radio frequency; a signal cancellation system coupled to the input signal, and a first feedback signal, which is based on the output signal, and configured to provide an error signal with a reduced level of the input signal; and a feedback control system coupled to the error signal and configured to provide a correction signal that is used to reduce distortion in the output signal. A corresponding method includes amplifying in a forward path an input signal to provide an output signal at a radio frequency; combining a reference and a first feedback signal to provide an error signal with a reduced level of the input signal; providing, responsive to the error signal and in a feedback control system that is separate from the forward path, a correction signal; and then using the correction signal to reduce distortion in the output signal.</p> |
申请公布号 |
WO2009014740(A2) |
申请公布日期 |
2009.01.29 |
申请号 |
WO2008US09020 |
申请日期 |
2008.07.25 |
申请人 |
PULSEWAVE RF, INC. |
发明人 |
WILLIAMS, BERTRAND, JEFFERY;MERECHUK, KELLY;JOHNSON, THOMAS;HUSLIG, DAN |
分类号 |
H03F3/20 |
主分类号 |
H03F3/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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