公开(公告)号：US06952569B2

公开(公告)日：2005-10-04

申请号：US10370585

申请日：2003-02-24

申请人： Morten Damgaard ,  Rahul Magoon

发明人： Morten Damgaard ,  Rahul Magoon

IPC分类号： H03C3/09 ,  H03L7/18 ,  H03L7/185 ,  H04L27/00 ,  H03D3/29

CPC分类号： H03C3/0983 ,  H03C3/0966 ,  H03L7/1806 ,  H03L7/185 ,  H04L2027/0016 ,  H04L2027/0018

摘要： A transmitter for a wireless handset having a modified translation loop architecture. The transmitter includes a VCO that generates a modulated transmit signal having a frequency fTx, and a modulated signal source that generates a modulated LO signal with a frequency fLO. A mixer mixes the transmit signal with the LO signal to produce an IF signal having a frequency fIF. A first divider divides the LO signal frequency fLO by an integer M to generate a first comparison signal having a frequency fCF. A second divider divides the IF signal frequency fIF, after it is multiplied by an integer K, by an integer N to generate a second comparison signal having a frequency fCF. The transmit and LO signal frequencies have the relationship f Tx = f LO ⁢ KM ± N M . A phase detector coupled to the first and second comparison signals compares the phases of the signals and outputs a control voltage to the VCO proportional to any phase differences between the signals.

摘要翻译： 一种用于具有修改的平移环结构的无线手机的发射机。 发射机包括产生具有频率f Tx的调制的发射信号的VCO和产生具有频率为LO LO的调制LO信号的调制信号源。 混合器将发送信号与LO信号混合以产生具有频率f IF IF的IF信号。 第一分频器将LO信号频率f LO LO分频整数M以产生具有频率f CF1的第一比较信号。 第二分频器将IF信号频率f IF IF在乘以整数K之后除以整数N，以产生具有频率f CF1的第二比较信号。 发送和LO信号频率具有关系