公开(公告)号：US07720454B1

公开(公告)日：2010-05-18

申请号：US11582067

申请日：2006-10-17

申请人： Patrick Clement ,  David Cousinard

发明人： Patrick Clement ,  David Cousinard

IPC分类号： H04B1/16

CPC分类号： H04B1/28 ,  H04B1/0032 ,  H04H40/18 ,  H04H2201/183

摘要： A radio frequency (RF) receiver includes an intermediate frequency (IF) mixer that generates an output signal based on mixing a hybrid in-band, on-channel (IBOC) signal with an intermediate frequency signal. An oscillator generates the intermediate frequency signal; wherein the intermediate frequency is less than a bandwidth of the IBOC signal.

摘要翻译： 射频（RF）接收机包括中频（IF）混频器，其基于混合带内同步信道（IBOC）信号和中频信号来产生输出信号。 振荡器产生中频信号; 其中中频小于IBOC信号的带宽。

公开(公告)号：US08014477B1

公开(公告)日：2011-09-06

申请号：US11592357

申请日：2006-11-02

申请人： King Chun Tsai ,  Patrick Clement ,  David Cousinard

发明人： King Chun Tsai ,  Patrick Clement ,  David Cousinard

IPC分类号： H03D1/04

CPC分类号： H03M3/458 ,  H01L51/524 ,  H03M1/004 ,  H03M1/12

摘要： A receiver is set forth that includes a tuner circuit and a converter circuit. The tuner circuit provides an analog signal corresponding to a modulated signal that is received on a selected channel. The converter circuit includes a sample clock that is used to convert the analog signal to a digital signal at a conversion rate corresponding to the frequency of the sample clock. The sample clock is selectable between at least two different clock frequencies.

摘要翻译： 提出了包括调谐器电路和转换器电路的接收器。 调谐器电路提供对应于在所选频道上接收的调制信号的模拟信号。 转换器电路包括采样时钟，该采样时钟用于以与采样时钟的频率对应的转换速率将模拟信号转换为数字信号。 采样时钟可在至少两个不同的时钟频率之间选择。

公开(公告)号：US07672655B1

公开(公告)日：2010-03-02

申请号：US11731655

申请日：2007-03-30

申请人： David Cousinard

发明人： David Cousinard

IPC分类号： H04B1/10

CPC分类号： H04B1/28 ,  H04L2027/003

摘要： A phase mismatch compensation system includes a first summer that has a first input that communicates with a first phase of a received signal and an output. A second summer has a first input that communicates with a second phase of the received signal and an output, wherein the second phase is offset from the first phase. A first filter selectively filters the output of the first summer. An adaptive control module determines a predicted shift between the first and second phases of the received signal based on an output of the first filter and an actual shift between the first and second phases of the received signal. A correction module communicates with an output of the adaptive control module and the first phase and second phase of the received signal. The correction module outputs a mismatch correction to second inputs of the first and second summers respectively.

摘要翻译： 相位失配补偿系统包括具有与接收信号和输出的第一相通信的第一输入的第一加法器。 第二个加法器具有与接收信号的第二相位通信的第一输入端和输出端，其中第二相位偏离第一相位。 第一个过滤器选择性地过滤第一个夏天的输出。 自适应控制模块基于第一滤波器的输出和接收信号的第一和第二相位之间的实际偏移来确定接收信号的第一和第二相位之间的预测偏移。 校正模块与自适应控制模块的输出和接收信号的第一相位和第二相位通信。 校正模块分别向第一和第二夏季的第二输入端输出失配校正。