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1. 发明授权

EP1489748B1 Extended range digital-to-analog conversion 有权
标题翻译：扩展动态范围，以进行数模转换
公开(公告)号：EP1489748B1
公开(公告)日：2006-07-05
申请号：EP03025798.4
申请日：2003-11-11
申请人： NORTHROP GRUMMAN CORPORATION
发明人： Robinson, Ian Stuart
IPC分类号： H03M1/70
CPC分类号： H03M1/70 , H03M3/51

2. 发明公开

EP1492293A1 Emission of a signal with reduced peaks and of an associated instruction signal 审中-公开
标题翻译： Aussendung eines信号mit reduzierten Spitzen und eineszugehörigenAnweisungssignals
公开(公告)号：EP1492293A1
公开(公告)日：2004-12-29
申请号：EP03025730.7
申请日：2003-11-10
申请人： Northrop Grumman Corporation
发明人： Robinson, Ian Stuart , Winter, Frank
IPC分类号： H04L27/26 , H04L27/36
CPC分类号： H04L27/366 , H04L1/08 , H04L27/2614
摘要： A communication system and method is provided that modifies a signal (16) for transmission at a transmitter (12) to reduce peaks associated with the signal. The signal can be modified employing signal shaping, signal clipping, signal decomposition or other techniques to remove peaks associated with the signal. The communication system can also correct (28) the modified signal at a receiver (14) to reconstruct the originally wanted signal.
摘要翻译：该装置具有一个具有信号修正器（16）的发射器，其对输入信号进行修改以提供峰值降低的输入信号和指令信号。信号组合器将指令信号与输入信号并联和顺序关系中的一个组合。指令信号指示输入信号修改的性质，使得修改部分或完全相反。

3. 发明授权

EP1492239B1 Look-up table delta-sigma conversion 有权
标题翻译：使用查表Δ-Σ转换
公开(公告)号：EP1492239B1
公开(公告)日：2010-09-08
申请号：EP03025731.5
申请日：2003-11-10
申请人： NORTHROP GRUMMAN CORPORATION
发明人： Robinson, Ian Stuart , Hinrichs, Jeffrey M. , Patel, Jasmine Upendra , MacFalda, Paul Charles , Dehmohseni, Reza , Harris, Frederic J. , Weber, Kenneth B.
IPC分类号： H03M7/00
CPC分类号： H03M7/3015

4. 发明授权

EP1487111B1 Conversion employing delta-sigma modulation 有权
标题翻译：与delta-sigma调制转换系统
公开(公告)号：EP1487111B1
公开(公告)日：2008-05-14
申请号：EP03025703.4
申请日：2003-11-07
申请人： NORTHROP GRUMMAN CORPORATION
发明人： Robinson, Ian Stuart , Hinrichs, Jeffrey M. , Weber, Kenneth B. , Patel, Jasmine Upendra , MacFalda, Paul Charles , Skones, William Marvin
IPC分类号： H03M3/02
CPC分类号： H03M3/50

5. 发明公开

EP1491984A1 Digital frequency synthesiser 有权
标题翻译：数字频率合成
公开(公告)号：EP1491984A1
公开(公告)日：2004-12-29
申请号：EP03025729.9
申请日：2003-11-10
申请人： Northrop Grumman Corporation
发明人： Robinson, Ian Stuart , Hinrichs, Jeffrey M. , Weber, Kenneth B.
IPC分类号： G06F1/02
CPC分类号： H03M7/3015 , G06F1/0321
摘要： Frequency synthesis is implemented by providing a delta-sigma modulated signal associated with a selected frequency, which frequency can vary based on a selection input. The delta-sigma modulated signal is converted from the digital to analog domain. The delta-sigma modulated signal can be provided directly from memory based on the selection input or, alternatively, it can be provided by a signal generator and processed by a delta-sigma modulator to provide the delta-sigma modulated signal. The selected frequency can be varied at a high rate of speed.
摘要翻译：合成器具有用于基于频率选择输入提供存储在存储器中的若干频率图案（12）的频率源。数模（DAC）转换器（18）接收与所选模式相关联的Δ-Σ调制信号。存储器将选择的模式提供为多位数据流。 DAC转换器将调制信号转换为相应的模拟信号。

6. 发明公开

EP1536556A3 Switching amplifier architecture 有权转让
标题翻译：开关放大器架构
公开(公告)号：EP1536556A3
公开(公告)日：2005-08-31
申请号：EP04025039.1
申请日：2004-10-21
申请人： NORTHROP GRUMMAN CORPORATION
发明人： Robinson, Ian Stuart , Winter, Frank
IPC分类号： H03F1/02 , H03F1/07 , H03F3/217
CPC分类号： H03F3/217 , H03F1/0227 , H03F1/0288 , H03F2200/331
摘要： A supply voltage and/or bias of a switching amplifier is modified based on at least one characteristic of the input signal relative to a threshold level. A binary waveform converter converts the input signal into a binary waveform for inputting into the switching amplifier. The switching amplifier amplifies the input signal, while the supply voltage and/or bias is modified in response to changes of the at least one characteristic of the input signal.

7. 发明公开

EP1503495A2 Digital feed-forward system 审中-公开
标题翻译： Digitalesvorwärtsgekoppeltes系统
公开(公告)号：EP1503495A2
公开(公告)日：2005-02-02
申请号：EP04017348.6
申请日：2004-07-22
申请人： Northrop Grumman Corporation
发明人： Robinson, Ian Stuart
IPC分类号： H03F1/32
CPC分类号： H03F1/3223 , H03F1/32 , H03F1/3229 , H03F2200/331
摘要： An amplification system and method is provided that employs a digital cross-cancellation technique which provides a separate digital signal to be input to a separate DAC to generate a cancellation signal. The cancellation signal is added to the output of the amplifier to produce a final signal with substantially reduced distortion and/or out-of-band emissions. The cancellation signal can be pre-computed or derived by generating an inverted version of the wanted signal, and combining it with a portion of the output signal to determine the error or unwanted portion of the output signal. This error signal is then combined with a delayed version of the output signal.
摘要翻译：提供了一种放大系统和方法，其采用数字交叉消除技术，其提供单独的数字信号以输入到单独的DAC以产生消除信号。消除信号被添加到放大器的输出端，以产生具有显着降低的失真和/或带外发射的最终信号。消除信号可以通过产生有用信号的反向版本并将其与输出信号的一部分组合来预先计算或导出，以确定输出信号的误差或不需要的部分。然后将该误差信号与延迟版本的输出信号组合。

8. 发明公开

EP1489748A1 Extended range digital-to-analog conversion 有权
标题翻译： Erweiterter DynamikbereichfürDigital-Analog-Wandlung
公开(公告)号：EP1489748A1
公开(公告)日：2004-12-22
申请号：EP03025798.4
申请日：2003-11-11
申请人： Northrop Grumman Corporation
发明人： Robinson, Ian Stuart
IPC分类号： H03M1/70
CPC分类号： H03M1/70 , H03M3/51
摘要： A conversion system converts an input signal from a digital signal to an analog signal over an extended dynamic range. The system includes a DAC system and a mode selector. The mode selector selects a mode of operation for the digital-to-analog converter system from a plurality of modes. The mode selector selects a mode according to a characteristic of the input signal. Each of the modes is associated with an instantaneous dynamic range and quantization noise level of the DAC system. The ensemble of modes provides an improvement in total or effective dynamic range compared to any single DAC component within the DAC system.
摘要翻译：转换系统将数字信号的输入信号转换为扩展动态范围的模拟信号。该系统包括DAC系统和模式选择器。模式选择器从多个模式中选择数模转换器系统的操作模式。模式选择器根据输入信号的特性来选择一种模式。每个模式都与DAC系统的瞬时动态范围和量化噪声电平相关联。与DAC系统中的任何单个DAC组件相比，该模式的集合提供了总体或有效动态范围的改进。

9. 发明公开

EP1487111A1 Conversion employing delta-sigma modulation 有权
标题翻译： Wandlungsystem mit Delta-Sigma-Modulation
公开(公告)号：EP1487111A1
公开(公告)日：2004-12-15
申请号：EP03025703.4
申请日：2003-11-07
申请人： Northrop Grumman Corporation
发明人： Robinson, Ian Stuart , Hinrichs, Jeffrey M. , Weber, Kenneth B. , Patel, Jasmine Upendra , MacFalda, Paul Charles , Skones, William Marvin
IPC分类号： H03M3/02
CPC分类号： H03M3/50
摘要： Signal conversion of an input signal can be achieved by processing portions of the signal through plural parallel paths, which collectively approximate a desired infinite impulse response (IIR) filter, either alone or implemented with other signal processing functions. In one aspect, each of the paths can perform filtering, noise-shaping and/or quantization on a respective portion of the input signal to provide a corresponding representation of the respective portion of the input signal, for example, a coarser representation at a higher data rate. The corresponding representations from the parallel paths can be aggregated and further processed in a desired manner, such as conversion to an analog signal.
摘要翻译：输入信号的信号转换可以通过多个并行路径来处理信号的部分来实现，这些并行路径共同接近期望的无限脉冲响应（IIR）滤波器，或者用其他信号处理功能实现。在一个方面，每个路径可以在输入信号的相应部分上执行滤波，噪声整形和/或量化，以提供输入信号的相应部分的相应表示，例如较高的较大的表示数据速率。来自并行路径的相应表示可以以期望的方式聚合并进一步处理，例如转换为模拟信号。

10. 发明公开

EP1503495A3 Digital feed-forward system 审中-公开
标题翻译：数字馈系统
公开(公告)号：EP1503495A3
公开(公告)日：2006-03-29
申请号：EP04017348.6
申请日：2004-07-22
申请人： NORTHROP GRUMMAN CORPORATION
发明人： Robinson, Ian Stuart
IPC分类号： H03F1/32
CPC分类号： H03F1/3223 , H03F1/32 , H03F1/3229 , H03F2200/331
摘要： An amplification system and method is provided that employs a digital cross-cancellation technique which provides a separate digital signal to be input to a separate DAC to generate a cancellation signal. The cancellation signal is added to the output of the amplifier to produce a final signal with substantially reduced distortion and/or out-of-band emissions. The cancellation signal can be pre-computed or derived by generating an inverted version of the wanted signal, and combining it with a portion of the output signal to determine the error or unwanted portion of the output signal. This error signal is then combined with a delayed version of the output signal.

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