发明名称 |
GROUP DELAY PRECOMPENSATOR |
摘要 |
The present invention provides, for use in a radio frequency (RF) transmitter that employs a power amplifier to transmit broadband signals, the power amplifier introducing amplitude and phase distortion, a group delay precompensator circuit. In one embodiment, the group delay precompensator circuit includes: (1) a Cartesian feedback loop coupled between an output of the power amplifier and an input of the RF transmitter; and (2) a group delay compensation block, located in the Cartesian feedback loop, that introduces an opposing phase characteristic into the Cartesian feedback loop and thereby precompensates for the phase distortion. A method of precompensating a group delay and an RF transmitter incorporating the precompensator or the method are also disclosed. |
申请公布号 |
WO03051011(A1) |
申请公布日期 |
2003.06.19 |
申请号 |
WO2002US26950 |
申请日期 |
2002.08.16 |
申请人 |
AGERE SYSTEMS, INC.;SUN, YANLING;BUSKING, ERIK, B. |
发明人 |
SUN, YANLING;BUSKING, ERIK, B. |
分类号 |
H03F1/32;H03F3/24;H04B1/04;H04L27/01;H04L27/36 |
主分类号 |
H03F1/32 |
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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