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1. 发明授权

US08451044B2 Switching circuit 有权
标题翻译：开关电路
公开(公告)号：US08451044B2
公开(公告)日：2013-05-28
申请号：US12493437
申请日：2009-06-29
申请人： John Nisbet , Michael McPartlin , Chun-Wen Paul Huang
发明人： John Nisbet , Michael McPartlin , Chun-Wen Paul Huang
IPC分类号： H03K17/16
CPC分类号： H04B1/44 , H03K17/687 , H03K2217/0036
摘要： A method for controlling a switch based on transistors is disclosed. A switching circuit for switching a signal from an input port to an output port thereof is provided. A shunting circuit for switchably shunting the signal from the input port to ground is also provided. A control signal is generated for biasing a control port of the shunting circuit and an approximately complementary control signal is generated for biasing of the switching circuit to either shunt a signal received at the input port or to switch the signal to the output port. A further bias signal for biasing a port within the switching circuit along the signal path between the input port and the output.
摘要翻译：公开了一种用于控制基于晶体管的开关的方法。提供了用于将信号从输入端口切换到其输出端口的开关电路。还提供了用于将信号从输入端口切换到地的分流电路。生成用于偏置分流电路的控制端口的控制信号，并且产生大致互补的控制信号以用于偏置开关电路以分流在输入端口接收的信号或将信号切换到输出端口。用于沿着输入端口和输出端之间的信号路径偏置开关电路内的端口的另一个偏置信号。

2. 发明申请

US20100327948A1 Switching Circuit 有权
标题翻译：开关电路
公开(公告)号：US20100327948A1
公开(公告)日：2010-12-30
申请号：US12493437
申请日：2009-06-29
申请人： John Nisbet , Michael McPartlin , Chun-Wen Paul Huang
发明人： John Nisbet , Michael McPartlin , Chun-Wen Paul Huang
IPC分类号： H03K17/687
CPC分类号： H04B1/44 , H03K17/687 , H03K2217/0036
摘要： A method for controlling a switch based on transistors is disclosed. A switching circuit for switching a signal from an input port to an output port thereof is provided. A shunting circuit for switchably shunting the signal from the input port to ground is also provided. A control signal is generated for biasing a control port of the shunting circuit and an approximately complimentary control signal is generated for biasing of the switching circuit to either shunt a signal received at the input port or to switch the signal to the output port. A further bias signal for biasing a port within the switching circuit along the signal path between the input port and the output port is also provided.
摘要翻译：公开了一种用于控制基于晶体管的开关的方法。提供了用于将信号从输入端口切换到其输出端口的开关电路。还提供了用于将信号从输入端口切换到地的分流电路。产生用于偏置分流电路的控制端口的控制信号，并且产生大约互补的控制信号以用于偏置开关电路以分流在输入端口接收的信号或将信号切换到输出端口。还提供了用于沿着输入端口和输出端口之间的信号路径偏置开关电路内的端口的另外的偏置信号。

3. 发明申请

US20080290939A1 Method and apparatus for distortion correction of RF amplifiers 审中-公开
标题翻译： RF放大器畸变校正的方法和装置
公开(公告)号：US20080290939A1
公开(公告)日：2008-11-27
申请号：US11802818
申请日：2007-05-25
申请人： Johan Grundlingh , Howard James Smith , John Nisbet , Gordon G. Rabjohn
发明人： Johan Grundlingh , Howard James Smith , John Nisbet , Gordon G. Rabjohn
IPC分类号： H03F1/26
CPC分类号： H03F1/3229
摘要： A method of reducing distortion in the output of an amplifier is provided. The method comprises subtractively combining baseband error signals with the appropriate phase shift with baseband input signals, the baseband error signals generated by subtractively combining delayed fed-forward portions of the baseband input signals with baseband converted portions of a fed-back amplified output signal, the amplified output signal being a distorted replica of combined up-converted baseband input signals. The baseband error signals being filtered prior to the combining function, and also providing inputs to a controller which adjusts active elements of the amplification and fed-back paths in order to minimize the distortion within the output of the amplifier.
摘要翻译：提供一种降低放大器输出的失真的方法。该方法包括将基带误差信号与基带输入信号相适应的相移相减，通过将基带输入信号的延迟的前馈部分与反馈放大的输出信号的基带转换部分进行减法组合而产生的基带误差信号，放大的输出信号是组合的上变频基带输入信号的失真副本。基带误差信号在组合功能之前被滤波，并且还向控制器提供输入，该控制器调节放大和反馈路径的有源元件，以便使放大器的输出内的失真最小化。

4. 发明授权

US07689180B2 Method and apparatus for a cartesian error feedback circuit to correct distortion within a power amplifier 有权
标题翻译：用于校正功率放大器内的失真的笛卡尔误差反馈电路的方法和装置
公开(公告)号：US07689180B2
公开(公告)日：2010-03-30
申请号：US11798566
申请日：2007-05-15
申请人： Johan Grundlingh , Howard James Smith , John Nisbet , Gordon G. Rabjohn
发明人： Johan Grundlingh , Howard James Smith , John Nisbet , Gordon G. Rabjohn
IPC分类号： H04B1/04
CPC分类号： H03F3/24 , H03F1/34 , H03F2200/336 , H03F2200/57
摘要： A method of reducing distortion in the output of an amplifier is provided. The method comprises subtractively combining baseband error signals with the appropriate phase shift with baseband input signals, the baseband error signals generated by subtractively combining delayed fed-forward portions of the baseband input signals with baseband converted portions of a fed-back amplified output signal, the amplified output signal being a distorted replica of combined up-converted baseband input signals. The baseband error signals being filtered prior to the combining function, and also providing inputs to a controller which adjusts active elements of the amplification and fed-back paths in order to minimize the distortion within the output of the amplifier.
摘要翻译：提供一种降低放大器输出的失真的方法。该方法包括将基带误差信号与基带输入信号相适应的相移相减，通过将基带输入信号的延迟前馈部分与反馈放大输出信号的基带转换部分进行减法组合而产生的基带误差信号，放大的输出信号是组合的上变频基带输入信号的失真副本。基带误差信号在组合功能之前被滤波，并且还向控制器提供输入，该控制器调节放大和反馈路径的有源元件，以便使放大器的输出内的失真最小化。

5. 发明申请

US20080287077A1 Method and apparatus for cartesian error feedback 有权
标题翻译：笛卡尔误差反馈的方法和装置
公开(公告)号：US20080287077A1
公开(公告)日：2008-11-20
申请号：US11798566
申请日：2007-05-15
申请人： Johan Grundlingh , Howard James Smith , John Nisbet , Gordon G. Rabjohn
发明人： Johan Grundlingh , Howard James Smith , John Nisbet , Gordon G. Rabjohn
IPC分类号： H04B1/04
CPC分类号： H03F3/24 , H03F1/34 , H03F2200/336 , H03F2200/57
摘要： A method of reducing distortion in the output of an amplifier is provided. The method comprises subtractively combining baseband error signals with the appropriate phase shift with baseband input signals, the baseband error signals generated by subtractively combining delayed fed-forward portions of the baseband input signals with baseband converted portions of a fed-back amplified output signal, the amplified output signal being a distorted replica of combined up-converted baseband input signals. The baseband error signals being filtered prior to the combining function, and also providing inputs to a controller which adjusts active elements of the amplification and fed-back paths in order to minimize the distortion within the output of the amplifier.
摘要翻译：提供一种降低放大器输出的失真的方法。该方法包括将基带误差信号与基带输入信号相适应的相移相减，通过将基带输入信号的延迟的前馈部分与反馈放大的输出信号的基带转换部分进行减法组合而产生的基带误差信号，放大的输出信号是组合的上变频基带输入信号的失真副本。基带误差信号在组合功能之前被滤波，并且还向控制器提供输入，该控制器调节放大和反馈路径的有源元件，以便使放大器的输出内的失真最小化。

6. 发明申请

US20080219389A1 Feed-forward cancellation in wireless receivers 审中-公开
标题翻译：无线接收器中的前馈消除
公开(公告)号：US20080219389A1
公开(公告)日：2008-09-11
申请号：US11714199
申请日：2007-03-06
申请人： John Nisbet
发明人： John Nisbet
IPC分类号： H04L1/00
CPC分类号： H04B1/525 , H04B1/3805
摘要： A method of suppressing interference from remote transmitters operating to a first standard having frequencies overlapping those for a receiver operating to a second standard is provided. Such interference being increasingly common as a result of the deployment of multiple wireless transceivers within electronic devices either supporting multiple international standards, such as WiFi and WiMAX, or within typical wireless environments. Advantageously, the invention presents a means of actively cancelling interference from transmitters operating within the same frequency range as defined by the standard. The active cancellation accordingly allows improved performance for systems with very low received signal powers, such as GPS, in addition to wireless data communications standards. An exemplary embodiment providing active cancellation through delaying the portion of the received signal according to the first standard adjusting both the amplitude and phase by means of polar modulation prior to summing this signal with the received signal to provide a receive signal within which the first standard signal is nulled. Control of the polar modulator being determined in the exemplary embodiment by minimizing received power after passband limiting filters.
摘要翻译：提供了一种抑制来自操作到第一标准的远程发射机的干扰的方法，其具有与操作到第二标准的接收机的频率重叠的频率。由于在支持多种国际标准（例如WiFi和WiMAX）的电子设备内部或在典型的无线环境中部署多个无线收发器，这种干扰越来越普遍。有利地，本发明提供了一种主动地消除在与标准所定义的相同频率范围内工作的发射机的干扰的手段。因此，除了无线数据通信标准之外，主动取消相应地允许具有非常低的接收信号功率的系统（例如GPS）的改进的性能。一种示例性实施例，通过根据第一标准延迟接收信号的部分，通过在将该信号与接收信号相加之前通过极坐标调节振幅和相位来提供主动消除，以提供接收信号，在该接收信号中第一标准信号被置零。在典型实施例中通过最小化通带限制滤波器之后的接收功率来确定极性调制器的控制。

7. 发明申请

US20080219377A1 Transmitter crosstalk cancellation in multi-standard wireless transceivers 审中-公开
标题翻译：多标准无线收发器中的发射机串扰消除
公开(公告)号：US20080219377A1
公开(公告)日：2008-09-11
申请号：US11714198
申请日：2007-03-06
申请人： John Nisbet
发明人： John Nisbet
IPC分类号： H04B15/00
CPC分类号： H04B1/525 , H04B1/406
摘要： A method of suppressing interference from a transmitter operating to a first standard to a local receiver operating to a second standard is provided. Such interference being increasingly common as a result of the deployment of multiple wireless transceivers within electronic devices supporting multiple international standards, such as WiFi and WiMAX. Advantageously, the invention presents a means of actively cancelling interference both from transmitters operating within the same frequency range as defined by the standard as well as those operating in different frequency ranges. The active cancellation accordingly allows improved performance for systems with very low received signal powers, such as GPS, in addition to wireless data communications standards. An exemplary embodiment providing active cancellation through delaying a portion of the transmitted signal and adjusting both the amplitude and phase by means of polar modulation prior to summing this signal with the detected signal to provide a receive signal within which the transmit signal is nulled.
摘要翻译：提供了一种抑制从操作到第一标准的发射机到基于第二标准的本地接收机的干扰的方法。由于在支持多种国际标准的电子设备（如WiFi和WiMAX）中部署多个无线收发器，因此这种干扰越来越普遍。有利地，本发明提供了一种主动地消除来自在由标准定义的相同频率范围内工作的发射机以及在不同频率范围内工作的发射机的干扰的手段。因此，除了无线数据通信标准之外，主动取消相应地允许具有非常低的接收信号功率的系统（例如GPS）的改进的性能。一种示例性实施例，通过延迟发射信号的一部分并且在将该信号与检测到的信号相加之前通过极坐标调节来调节幅度和相位两者来提供主动消除，以提供其中发射信号为零的接收信号。

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