公开(公告)号：US08839331B2

公开(公告)日：2014-09-16

申请号：US13017078

申请日：2011-01-31

申请人： Colin Howlett ,  Gerald Harron ,  Michael Jaspar

发明人： Colin Howlett ,  Gerald Harron ,  Michael Jaspar

IPC分类号： H04N7/173 ,  H04N7/16 ,  H04N5/40

CPC分类号： H04N5/40 ,  H04N21/6118

摘要： A method of channel processing is provided wherein multiple reduced-bandwidth “processing blocks” may be combined at RF to allow for the continuous and flexible placement of multiple-channels across the full or partial CATV output band. Each reduced-bandwidth processing block is associated with a fixed-frequency upconversion. In order to allow for continuous agile channel placement, the processing blocks overlap one another in frequency at RF. In the case where it is not necessary that the full CATV band be available to the combined output, the number of required processing blocks and upconversion paths is reduced and individual processing blocks and upconversion paths may be used to cover multiple non-contiguous frequency bands.

摘要翻译： 提供了一种信道处理方法，其中可以在RF处组合多个减少带宽的“处理块”，以允许在全部或部分CATV输出频带上连续且灵活地放置多个信道。 每个缩减带宽处理块与固定频率上变频相关联。 为了允许连续的敏捷通道放置，处理块在RF频率上彼此重叠。 在不需要全部CATV频带对组合输出可用的情况下，减少所需的处理块和上变频路径的数量，并且可以使用各个处理块和上变频路径来覆盖多个不连续的频带。

公开(公告)号：US07383296B2

公开(公告)日：2008-06-03

申请号：US10796415

申请日：2004-03-10

申请人： Gerald Harron ,  Surinder Kumar

发明人： Gerald Harron ,  Surinder Kumar

IPC分类号： G06F1/02 ,  H03K21/00

CPC分类号： G06F1/025 ,  G06F7/68

摘要： A method to improve the frequency resolution and phase noise of a synthesized RF signal results in superior instantaneous frequency change and phase modulation capability, wide frequency set ability, and suitability for implementation in a digital ASIC. The RF signal synthesis is achieved from a higher reference frequency clock signal using a variable pulse stretching technique. The amount of the pulse stretch in each cycle is set by a phase increment value and is implemented using programmable delay lines. Pulse stretching can be extended beyond one cycle by pulse swallowing, allowing the generation of an RF signal with frequencies from DC up to the input reference frequency. Phase modulation is incorporated by digital control of the phase stretching with the phase modulation bits.

摘要翻译： 提高合成RF信号的频率分辨率和相位噪声的方法可以实现出色的瞬时频率变化和相位调制能力，宽频率设定能力和适用于数字ASIC的实现。 使用可变脉冲拉伸技术从较高参考频率时钟信号获得RF信号合成。 每个周期中的脉冲拉伸量由相位增量值设定，并使用可编程延迟线实现。 脉冲拉伸可以通过脉冲吞咽延伸超过一个周期，允许生成具有从DC到输入参考频率的频率的RF信号。 通过相位调制位的相位拉伸的数字控制并入相位调制。

公开(公告)号：US07012477B2

公开(公告)日：2006-03-14

申请号：US10796418

申请日：2004-03-10

申请人： Gerald Harron ,  Jason T. Tucker ,  Surinder Kumar

发明人： Gerald Harron ,  Jason T. Tucker ,  Surinder Kumar

IPC分类号： H03K7/10

CPC分类号： H04L27/365

摘要： The present invention provides a means to implement amplitude and phase modulation digitally and directly at an RF frequency that benefits from high output power without the use of amplifiers. This is accomplished by the combination of two varying amplitude and phase vectors. A reference oscillator produces a carrier signal, which is supplied to two digital delay lines composed of a sequence of delay banks. The delay lines are controlled by lookup tables that are updated by the vector control circuit, used to determine the delay of each digital delay line. The output of each delay line is multiplexed to a switching bank which is also controlled by the vector control circuit. The output of the switching bank, in combination with a summer, is used to produce discrete amplitude adjustment of the vector. The delay of the lines and the summation adjustment are set in such a way as to produce two vectors with the desired phase shift and magnitude the summation of these two vectors produces a resultant vector with the desired phase and amplitude characteristics.

摘要翻译： 本发明提供一种在不使用放大器的情况下以高输出功率从RF频率数字地且直接地实现幅度和相位调制的手段。 这通过两个变化幅度和相位矢量的组合来实现。 参考振荡器产生一个载波信号，它被提供给由一系列延迟线组成的两个数字延迟线。 延迟线由由矢量控制电路更新的查找表控制，用于确定每个数字延迟线的延迟。 每个延迟线的输出被复用到也由矢量控制电路控制的开关组。 开关组的输出结合夏天，用于产生向量的离散振幅调整。 线的延迟和求和调整被设置为产生具有期望的相移和幅度的两个向量，这两个向量的总和产生具有期望的相位和幅度特性的合成矢量。

公开(公告)号：US5065107A

公开(公告)日：1991-11-12

申请号：US511069

申请日：1990-04-19

申请人： Surinder Kumar ,  Gerald Harron

发明人： Surinder Kumar ,  Gerald Harron

IPC分类号： H04B1/30 ,  H04L27/00 ,  H04L27/227

CPC分类号： H04B1/30 ,  H04L27/2273 ,  H04L2027/0028 ,  H04L2027/0051 ,  H04L2027/0081

摘要： A receiver for tracking a carrier suppressed phase-shifted input signal comprises a phase-locked loop circuit for receiving the input signal and having a variable frequency oscillator responsive to a control signal for oscillating at a frequency corresponding to an intermediate frequency and a frequency difference detector for producing an output signal indicative of the frequency difference between the frequency of the input signal and the intermediate frequency, a feedback loop network having a narrow-band path and a wide-band path and being responsive to the detector output signal for producing the control signal and applying the control signal to the oscillator through one of the paths whereby to change the intermediate frequency of the oscillator in response to the control signal, a quality detector responsive to the detector output signal for producing a signal corresponding to the bit error rate of the input signal; and selection means responsive to the bit error rate signal for causing the control signal to pass through the narrow-band path when the bit error rate signal is below a predetermined threshold and through the wide-band path when the bit error rate signal exceeds the predetermined threshold.

摘要翻译： 用于跟踪载波抑制相移输入信号的接收机包括一个锁相环电路，用于接收输入信号，并具有响应于控制信号的可变频率振荡器，该控制信号以对应于中频的频率振荡，频差检测器 用于产生指示输入信号的频率和中频之间的频率差的输出信号，具有窄带路径和宽带路径的反馈环路网络，并且响应于检测器输出信号以产生控制 信号并通过路径之一将控制信号施加到振荡器，由此响应于控制信号改变振荡器的中频;响应于检测器输出信号的质量检测器，产生对应于位错误率 输入信号; 以及响应于误码率信号的选择装置，当误码率信号低于预定阈值时，使得控制信号通过窄带路径，并且当误码率信号超过预定阈值时通过宽带路径 阈。

公开(公告)号：US07084676B2

公开(公告)日：2006-08-01

申请号：US10796417

申请日：2004-03-10

申请人： Gerald Harron ,  Surinder Kumar

发明人： Gerald Harron ,  Surinder Kumar

IPC分类号： H03B19/00

CPC分类号： H03B21/02 ,  H03K5/133 ,  H03K5/1565

摘要： The present invention provides a method to improve the frequency resolution and phase noise of a synthesized RF signal. It also results in the superior characteristics of instantaneous frequency changeability, wide frequency setting ability, and fully digital ASIC implementation ability. The synthesized RF signal is generated from a higher reference frequency using a variable pulse stretching technique. The amount of the pulse stretch in each cycle is controlled by a phase increment value and is implemented using programmable delay lines. Pulse stretching is extended beyond one cycle by pulse swallowing, allowing the generation of an RF signal from DC up to the input reference clock signal frequency.

摘要翻译： 本发明提供一种提高合成RF信号的频率分辨率和相位噪声的方法。 这也导致瞬时频率变化性，宽频率设定能力和全数字ASIC实现能力的优越特性。 使用可变脉冲拉伸技术从更高的参考频率产生合成的RF信号。 每个周期中的脉冲拉伸量由相位增量值控制，并使用可编程延迟线实现。 通过脉冲吞咽将脉冲延伸延伸超过一个周期，从而产生从DC直到输入参考时钟信号频率的RF信号。

公开(公告)号：US20050091295A1

公开(公告)日：2005-04-28

申请号：US10796415

申请日：2004-03-10

申请人： Gerald Harron ,  Surinder Kumar

发明人： Gerald Harron ,  Surinder Kumar

IPC分类号： G06F1/02 ,  G06F1/025 ,  G06F7/68 ,  H03K7/00 ,  H03L7/00

CPC分类号： G06F1/025 ,  G06F7/68

摘要： A method to improve the frequency resolution and phase noise of a synthesized RF signal results in superior instantaneous frequency change and phase modulation capability, wide frequency set ability, and suitability for implementation in a digital ASIC. The RF signal synthesis is achieved from a higher reference frequency clock signal using a variable pulse stretching technique. The amount of the pulse stretch in each cycle is set by a phase increment value and is implemented using programmable delay lines. Pulse stretching can be extended beyond one cycle by pulse swallowing, allowing the generation of an RF signal with frequencies from DC up to the input reference frequency. Phase modulation is incorporated by digital control of the phase stretching with the phase modulation bits.

摘要翻译： 提高合成RF信号的频率分辨率和相位噪声的方法可以实现出色的瞬时频率变化和相位调制能力，宽频率设定能力和适用于数字ASIC的实现。 使用可变脉冲拉伸技术从较高参考频率时钟信号获得RF信号合成。 每个周期中的脉冲拉伸量由相位增量值设定，并使用可编程延迟线实现。 脉冲拉伸可以通过脉冲吞咽延伸超过一个周期，允许生成具有从DC到输入参考频率的频率的RF信号。 通过相位调制位的相位拉伸的数字控制并入相位调制。

公开(公告)号：US08499328B2

公开(公告)日：2013-07-30

申请号：US13016169

申请日：2011-01-28

申请人： Colin Howlett ,  Gerald Harron ,  Michael Jaspar

发明人： Colin Howlett ,  Gerald Harron ,  Michael Jaspar

IPC分类号： H04N7/16

CPC分类号： H04N7/173 ,  H04N21/6118

摘要： A distortion-cancellation method for analog CATV or QAM transmission over cable is provided wherein a single feedback path from the output of a multiple-channel multiple-port upconverter/modulator is down-converted and used to reduce or cancel undesirable noise components including LO leakage, spurious, and modulated noise. The method allows for real-time monitoring, tuning, or control of the CATV/QAM output and of interfering signals and aging effects as compared to a desired performance metric.

摘要翻译： 提供了通过电缆的模拟CATV或QAM传输的失真消除方法，其中来自多通道多端口上变频器/调制器的输出的单个反馈路径被下变频并用于减少或消除包括LO泄漏的不期望的噪声分量 ，杂散和调制噪声。 与所需性能指标相比，该方法允许CATV / QAM输出的实时监控，调谐或控制以及干扰信号和老化效应。

公开(公告)号：US20050116786A1

公开(公告)日：2005-06-02

申请号：US10796419

申请日：2004-03-10

申请人： Gerald Harron ,  Jason Tucker ,  Surinder Kumar

发明人： Gerald Harron ,  Jason Tucker ,  Surinder Kumar

IPC分类号： H03C5/00 ,  H03K7/10 ,  H04L27/36

CPC分类号： H03C5/00 ,  H03K7/10 ,  H04L27/365

摘要： The present invention provides a means to implement amplitude and phase modulation digitally and directly at an RF frequency that benefits from high output power using non-linear amplifiers. This is accomplished by the combination of two constant amplitude phase varying vectors. A reference oscillator produces a carrier signal, which is supplied to two digital delay lines composed of a sequence of delay banks. The delay lines are controlled by lookup tables that are updated by the vector control circuit used to determine the delay of each digital delay line. The delay of the lines are set in such a way as to produce two vectors with the desired phase shift that, when summed together, produce a vector with the desired phase and amplitude characteristics.

摘要翻译： 本发明提供了一种使用非线性放大器从高输出功率受益的数字地且直接地以RF频率实现幅度和相位调制的手段。 这通过两个恒定幅度相位变化矢量的组合来实现。 参考振荡器产生一个载波信号，它被提供给由一系列延迟线组成的两个数字延迟线。 延迟线由用于确定每个数字延迟线的延迟的矢量控制电路更新的查找表来控制。 线的延迟被设置为产生具有期望相移的两个矢量，当相加在一起时，产生具有期望的相位和幅度特性的矢量。

公开(公告)号：US20050116785A1

公开(公告)日：2005-06-02

申请号：US10796418

申请日：2004-03-10

申请人： Gerald Harron ,  Jason Tucker ,  Surinder Kumar

发明人： Gerald Harron ,  Jason Tucker ,  Surinder Kumar

IPC分类号： H03C5/00 ,  H03K7/10 ,  H04L27/36

CPC分类号： H04L27/365

摘要： The present invention provides a means to implement amplitude and phase modulation digitally and directly at an RF frequency that benefits from high output power without the use of amplifiers. This is accomplished by the combination of two varying amplitude and phase vectors. A reference oscillator produces a carrier signal, which is supplied to two digital delay lines composed of a sequence of delay banks. The delay lines are controlled by lookup tables that are updated by the vector control circuit, used to determine the delay of each digital delay line. The output of each delay line is multiplexed to a switching bank which is also controlled by the vector control circuit. The output of the switching bank, in combination with a summer, is used to produce discrete amplitude adjustment of the vector. The delay of the lines and the summation adjustment are set in such a way as to produce two vectors with the desired phase shift and magnitude the summation of these two vectors produces a resultant vector with the desired phase and amplitude characteristics.

摘要翻译： 本发明提供一种在不使用放大器的情况下以高输出功率从RF频率数字地且直接地实现幅度和相位调制的手段。 这通过两个变化幅度和相位矢量的组合来实现。 参考振荡器产生一个载波信号，它被提供给由一系列延迟线组成的两个数字延迟线。 延迟线由由矢量控制电路更新的查找表控制，用于确定每个数字延迟线的延迟。 每个延迟线的输出被复用到也由矢量控制电路控制的开关组。 开关组的输出结合夏天，用于产生向量的离散振幅调整。 线的延迟和求和调整被设置为产生具有期望的相移和幅度的两个向量，这两个向量的总和产生具有期望的相位和幅度特性的合成矢量。

公开(公告)号：US20050083085A1

公开(公告)日：2005-04-21

申请号：US10796417

申请日：2004-03-10

申请人： Gerald Harron ,  Surinder Kumar

发明人： Gerald Harron ,  Surinder Kumar

IPC分类号： H03B21/02 ,  H03K5/13 ,  H03K5/156 ,  H03L7/00

CPC分类号： H03B21/02 ,  H03K5/133 ,  H03K5/1565

摘要： The present invention provides a method to improve the frequency resolution and phase noise of a synthesized RF signal. It also results in the superior characteristics of instantaneous frequency changeability, wide frequency setting ability, and fully digital ASIC implementation ability. The synthesized RF signal is generated from a higher reference frequency using a variable pulse stretching technique. The amount of the pulse stretch in each cycle is controlled by a phase increment value and is implemented using programmable delay lines. Pulse stretching is extended beyond one cycle by pulse swallowing, allowing the generation of an RF signal from DC up to the input reference clock signal frequency.

摘要翻译： 本发明提供一种提高合成RF信号的频率分辨率和相位噪声的方法。 这也导致瞬时频率变化性，宽频率设定能力和全数字ASIC实现能力的优越特性。 使用可变脉冲拉伸技术从更高的参考频率产生合成的RF信号。 每个周期中的脉冲拉伸量由相位增量值控制，并使用可编程延迟线实现。 通过脉冲吞咽将脉冲延伸延伸超过一个周期，从而产生从DC直到输入参考时钟信号频率的RF信号。