公开(公告)号：US20090081984A1

公开(公告)日：2009-03-26

申请号：US11860636

申请日：2007-09-25

申请人： PAUL H. GAILUS ,  JOHN J. BOZEKI ,  JOSEPH A. CHARASKA ,  VADIM DUBOV ,  MANUEL P. GABATO, JR. ,  ARMANDO J. GONZALEZ

发明人： PAUL H. GAILUS ,  JOHN J. BOZEKI ,  JOSEPH A. CHARASKA ,  VADIM DUBOV ,  MANUEL P. GABATO, JR. ,  ARMANDO J. GONZALEZ

IPC分类号： H04B1/26 ,  H03B21/00 ,  H03L1/00

CPC分类号： H03L7/1974

摘要： A frequency synthesizer includes: a frequency source generating a reference signal that includes a plurality of pulses having periodicity based on a reference frequency; a feedback loop that includes, a phase detector circuit, a loop filter, a controlled oscillator that generates an output signal at an output, and a loop divide circuit; a non-linear circuit element at an input of the phase detector circuit, which generates intermodulation distortion that causes at least one spurious signal at the output; and a controller controlling the loop divide circuit and the non-linear circuit element. The frequency synthesizer further includes a dither circuit that adjusts the timing of some of the pulses of the reference signal based on a parameter provided by the controller to the non-linear circuit element, thereby, providing a jittered reference signal to the non-linear circuit element for attenuating the at least one spurious signal at the output.

摘要翻译： 频率合成器包括：频率源，产生包括基于参考频率具有周期性的多个脉冲的参考信号; 反馈回路，包括相位检测器电路，环路滤波器，在输出端产生输出信号的受控振荡器和环路除法电路; 在相位检测器电路的输入处的非线性电路元件，其产生在输出端引起至少一个杂散信号的互调失真; 以及控制环路分割电路和非线性电路元件的控制器。 频率合成器还包括抖动电路，其基于由控制器向非线性电路元件提供的参数来调整参考信号的一些脉冲的定时，从而向非线性电路提供抖动参考信号 元件，用于衰减输出端的至少一个杂散信号。

公开(公告)号：US20080273626A1

公开(公告)日：2008-11-06

申请号：US11743746

申请日：2007-05-03

申请人： JOSHUA E. DOREVITCH ,  JOHN J. BOZEKI ,  PAUL H. GAILUS ,  MARK ROZENTAL

发明人： JOSHUA E. DOREVITCH ,  JOHN J. BOZEKI ,  PAUL H. GAILUS ,  MARK ROZENTAL

IPC分类号： H04L25/49

CPC分类号： H04L27/364 ,  H04L2027/0018

摘要： 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.

摘要翻译： 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样本下变频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。