公开(公告)号：WO2008137229A1

公开(公告)日：2008-11-13

申请号：PCT/US2008/058380

申请日：2008-03-27

Applicant: MOTOROLA, INC. ,  DOREVITCH, Joshua E. ,  BOZEKI, John J. ,  GAILUS, Paul H. ,  ROZENTAL, Mark

Inventor： DOREVITCH, Joshua E. ,  BOZEKI, John J. ,  GAILUS, Paul H. ,  ROZENTAL, Mark

IPC: H03F1/32 ,  H04L27/34

CPC classification number: H04L27/364 ,  H04L2027/0018

Abstract: A system and method for performing baseband phase shifting in a Cartesian feedback system includes a forward path for receiving an input baseband signal having two components, and performing up-conversion to output a RF signal; a power amplifier for amplifying the RF signal output from the forward path; and a feedback path for down-converting at least a sample of the output from the power amplifier to a feedback baseband signal comprising two components, and providing the feedback baseband signal to the forward path in order to be summed with the input baseband signal at a summing junction and before the loop filter. The forward path includes a baseband phase shifter for adjusting the baseband signal output from the summing junction in order to compensate for any phase shifts induced in the system.

Abstract translation: 用于在笛卡尔反馈系统中执行基带相移的系统和方法包括用于接收具有两个分量的输入基带信号的前向路径，并执行上变频以输出RF信号; 用于放大从前向路径输出的RF信号的功率放大器; 以及反馈路径，用于将来自功率放大器的输出的至少一个采样的至少一个样本降级为包括两个分量的反馈基带信号，并将反馈基带信号提供给前向路径，以便将其与输入基带信号相加 求和结点和环路滤波器之前。 正向路径包括基带移相器，用于调整从求和结点输出的基带信号，以便补偿系统中引起的任何相移。