SYSTEM AND METHOD FOR PERFORMING BASEBAND PHASE SHIFTING IN A CARTESIAN FEEDBACK SYSTEM
摘要
<p>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.</p>
申请公布号
WO2008137229(A1)
申请公布日期
2008.11.13
申请号
WO2008US58380
申请日期
2008.03.27
申请人
MOTOROLA, INC.;DOREVITCH, JOSHUA E.;BOZEKI, JOHN J.;GAILUS, PAUL H.;ROZENTAL, MARK
发明人
DOREVITCH, JOSHUA E.;BOZEKI, JOHN J.;GAILUS, PAUL H.;ROZENTAL, MARK