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1. 发明授权

US08855580B2 Methods and apparatus for reducing own-transmitter interference in low-IF and zero-IF receivers 有权
标题翻译：用于降低低中频和零中频接收机中自发射机干扰的方法和装置
公开(公告)号：US08855580B2
公开(公告)日：2014-10-07
申请号：US12163248
申请日：2008-06-27
申请人： Paul Wilkinson Dent , Sven Mattisson
发明人： Paul Wilkinson Dent , Sven Mattisson
IPC分类号： H04B1/10 , H04B1/52
CPC分类号： H04B1/525
摘要： Circuits and methods are disclosed for reducing interference from transmitter leakage in a radio transceiver. An exemplary method for reducing interference from transmitter leakage in a radio transceiver comprises downconverting, filtering, and sampling a radio frequency signal comprising a desired signal and a transmitter leakage signal to obtain a sampled signal of interest. The method further comprises generating a sampled distortion signal estimate that estimates one or more distortion products of the transmitter leakage signal, such as a squared amplitude obtained from a square-law device or corresponding digital function. Finally, the method comprises combining the sampled distortion signal estimate with the sampled signal of interest to obtain interference-reduced signal samples. In some embodiments, this may comprise correlating the sampled distortion signal estimate with the sampled signal of interest to determine a scaling factor, scaling the sampled distortion signal estimate with the scaling factor, and subtracting the scaled distortion signal estimate from the sampled signal of interest to obtain the interference-reduced signal samples.
摘要翻译：公开了用于减少无线电收发器中发射机泄漏的干扰的电路和方法。用于减少无线电收发机中的发射机泄漏的干扰的示例性方法包括对包括期望信号和发射机泄漏信号的射频信号进行下变频，滤波和采样，以获得感兴趣的采样信号。该方法还包括生成估计发射机泄漏信号的一个或多个失真产物的采样失真信号估计，例如从平方律装置获得的平方振幅或相应的数字功能。最后，该方法包括将采样的失真信号估计与所关注的采样信号组合以获得干扰减小的信号采样。在一些实施例中，这可以包括将采样的失真信号估计与所关注的采样信号相关联以确定缩放因子，用缩放因子缩放采样的失真信号估计，以及从所感测的采样信号中减去经缩放的失真信号估计获得干扰减少信号样本。

2. 发明申请

US20100159858A1 Strong Signal Tolerant OFDM Receiver and Receiving Methods 有权
标题翻译：强信号容差OFDM接收机和接收方法
公开(公告)号：US20100159858A1
公开(公告)日：2010-06-24
申请号：US12339630
申请日：2008-12-19
申请人： Paul Wilkinson Dent , Sven Mattisson
发明人： Paul Wilkinson Dent , Sven Mattisson
IPC分类号： H03D7/16 , H04K1/10 , H04B1/10
CPC分类号： H04B1/123 , H04B1/30 , H04L27/2647
摘要： Circuits and methods are disclosed for compensating for received signal distortion caused by non-linearities in wideband receivers. An exemplary receiver includes a distortion waveform generator configured to approximate non-linear response characteristics of a downconverter circuit used to downconvert the received radio frequency signal. The resulting estimated distortion waveform is filtered, using filter(s) substantially similar to those used for filtering an intermediate frequency signal that includes the desired signal and non-linear distortion products caused by strong interfering signals. The filtered estimated distortion waveform and intermediate frequency signal are sampled, to obtain a sampled distortion signal and a sampled signal of interest. The sampled distortion signal and the sampled signal of interest are divided into a plurality of frequency channels. For a selected number of frequency channels, the sampled distortion signal for a frequency channel is scaled, and subtracted from the corresponding sampled signal of interest for the same frequency channel to obtain reduced-interference signal samples for the frequency channel.
摘要翻译：公开了用于补偿由宽带接收机中的非线性引起的接收信号失真的电路和方法。示例性接收机包括失真波形发生器，其被配置为近似用于下变频接收的射频信号的下变频器电路的非线性响应特性。使用基本上类似于用于滤波包括由强干扰信号引起的期望信号和非线性失真产物的中频信号的滤波器，所得到的估计失真波形被滤波。对滤波的估计失真波形和中频信号进行采样，以获得采样的失真信号和感兴趣的采样信号。采样的失真信号和感兴趣的采样信号被分成多个频道。对于所选数量的频道，对频道的采样失真信号进行缩放，并从相同频率信道的对应采样信号中减去，以获得用于频率信道的减少干扰信号采样。

3. 发明申请

US20090253385A1 System and Method for Adaptive Antenna Impedance Matching 有权
标题翻译：自适应天线阻抗匹配的系统和方法
公开(公告)号：US20090253385A1
公开(公告)日：2009-10-08
申请号：US12099550
申请日：2008-04-08
申请人： Paul Wilkinson Dent , Sven Mattisson
发明人： Paul Wilkinson Dent , Sven Mattisson
IPC分类号： H04B1/44 , H04B1/38
CPC分类号： H04B1/0458
摘要： Methods and apparatus are disclosed for automatically adjusting antenna impedance match in a wireless transceiver employing phase-amplitude modulation. According to some embodiments of the invention, a wireless transceiver comprises a transmitter circuit and a receiver circuit connected to the antenna by a transmit/receive duplexer. An electronically adjustable matching network is located between the transmitter output and the antenna. To control the adjustable matching network, a directional coupler is located between the transmitter output and the matching network to separate transmit signals reflected from the antenna system, including the antenna, the matching network and the T/R duplexer. The reflected transmit signals are routed to the receiver circuit, which digitizes the reflected signal and determines an antenna reflection coefficient based on the digitized reflected signal and the modulation signal used to create the transmit signal. The complex antenna reflection coefficient is used to determine any adjustment needed to the antenna matching network.
摘要翻译：公开了用于在采用相位幅度调制的无线收发器中自动调整天线阻抗匹配的方法和装置。根据本发明的一些实施例，无线收发器包括发射机电路和通过发射/接收双工器连接到天线的接收机电路。电子可调匹配网络位于发射机输出和天线之间。为了控制可调匹配网络，定向耦合器位于发射机输出和匹配网络之间，以分离天线系统反射的发射信号，包括天线，匹配网络和T / R双工器。反射的发射信号被路由到接收机电路，其对反射信号进行数字化，并且基于用于产生发射信号的数字化反射信号和调制信号确定天线反射系数。复合天线反射系数用于确定天线匹配网络所需的任何调整。

4. 发明授权

US08090320B2 Strong signal tolerant OFDM receiver and receiving methods 有权
标题翻译：强信号容忍OFDM接收机和接收方法
公开(公告)号：US08090320B2
公开(公告)日：2012-01-03
申请号：US12339630
申请日：2008-12-19
申请人： Paul Wilkinson Dent , Sven Mattisson
发明人： Paul Wilkinson Dent , Sven Mattisson
IPC分类号： H04B1/00
CPC分类号： H04B1/123 , H04B1/30 , H04L27/2647
摘要： Circuits and methods are disclosed for compensating for received signal distortion caused by non-linearities in wideband receivers. An exemplary receiver includes a distortion waveform generator configured to approximate non-linear response characteristics of a downconverter circuit used to downconvert the received radio frequency signal. The resulting estimated distortion waveform is filtered, using filter(s) substantially similar to those used for filtering an intermediate frequency signal that includes the desired signal and non-linear distortion products caused by strong interfering signals. The filtered estimated distortion waveform and intermediate frequency signal are sampled, to obtain a sampled distortion signal and a sampled signal of interest. The sampled distortion signal and the sampled signal of interest are divided into a plurality of frequency channels. For a selected number of frequency channels, the sampled distortion signal for a frequency channel is scaled, and subtracted from the corresponding sampled signal of interest for the same frequency channel to obtain reduced-interference signal samples for the frequency channel.
摘要翻译：公开了用于补偿由宽带接收机中的非线性引起的接收信号失真的电路和方法。示例性接收机包括失真波形发生器，其被配置为近似用于下变频接收的射频信号的下变频器电路的非线性响应特性。使用基本上类似于用于滤波包括由强干扰信号引起的期望信号和非线性失真产物的中频信号的滤波器，所得到的估计失真波形被滤波。对滤波的估计失真波形和中频信号进行采样，以获得采样的失真信号和感兴趣的采样信号。采样的失真信号和感兴趣的采样信号被分成多个频道。对于所选数量的频道，对频道的采样失真信号进行缩放，并从相同频率信道的对应采样信号中减去，以获得用于频率信道的减少干扰信号采样。

5. 发明申请

US20100159837A1 Own Transmitter Interference Tolerant Transceiver and Receiving Methods 有权
标题翻译：自己的发射机干扰容错收发和接收方法
公开(公告)号：US20100159837A1
公开(公告)日：2010-06-24
申请号：US12339726
申请日：2008-12-19
申请人： Paul Wilkinson Dent , Sven Mattisson
发明人： Paul Wilkinson Dent , Sven Mattisson
IPC分类号： H04B1/00 , H04K1/10
CPC分类号： H04B1/525
摘要： Circuits and methods are disclosed for reducing interference from transmitter leakage in a radio transceiver. An exemplary method for reducing interference from transmitter leakage in a radio transceiver comprises downconverting, filtering, and sampling a radio frequency signal comprising a desired signal and a transmitter leakage signal to obtain a sampled signal of interest. The method further comprises generating a sampled distortion signal estimate that estimates one or more distortion products of the transmitter leakage signal, such as a squared amplitude obtained from a square-law device or corresponding digital function. Further, the method comprises dividing the sampled distortion signal estimate and the sampled signal of interest into a plurality of frequency channels. Finally, for a selected number of frequency channels, the method comprises combining the sampled distortion signal estimate for a frequency channel with the corresponding sampled signal of interest for the same frequency channel to obtain interference-reduced signal samples for the frequency channel.
摘要翻译：公开了用于减少无线电收发器中发射机泄漏的干扰的电路和方法。用于减少无线电收发机中的发射机泄漏的干扰的示例性方法包括对包括期望信号和发射机泄漏信号的射频信号进行下变频，滤波和采样，以获得感兴趣的采样信号。该方法还包括生成估计发射机泄漏信号的一个或多个失真产物的采样失真信号估计，例如从平方律装置获得的平方振幅或相应的数字功能。此外，该方法包括将采样的失真信号估计和所获取的采样信号分成多个频率信道。最后，对于选定数量的频道，该方法包括将用于频率信道的采样失真信号估计与相同频率信道的对应采样信号组合，以获得用于频率信道的干扰减小信号样本。

6. 发明申请

US20090325518A1 Methods and Apparatus for Suppressing Strong-Signal Interference in Low-IF Receivers 有权
标题翻译：抑制低中频接收机强信号干扰的方法与装置
公开(公告)号：US20090325518A1
公开(公告)日：2009-12-31
申请号：US12147962
申请日：2008-06-27
申请人： Sven Mattisson , Paul Wilkinson Dent
发明人： Sven Mattisson , Paul Wilkinson Dent
IPC分类号： H03D7/16
CPC分类号： H04B1/109 , H04B1/30
摘要： Circuits and methods are disclosed for compensating for received signal distortion caused by non-linearities in the receiver circuitry. An exemplary receiver circuit includes a distortion waveform generator configured to approximate one or more non-linear response characteristics of a downconverter circuit used to downconvert the received radio frequency signal. The estimated distortion waveform thus produced is filtered, using a filter or filters substantially similar to those used for filtering an intermediate frequency signal that includes the desired signal and non-linear distortion products caused by strong interfering signals. The filtered estimated distortion waveform and the intermediate frequency are sampled, to obtain a sampled distortion signal and a sampled signal of interest. The sampled distortion signal is scaled, and subtracted from the sampled signal of interest to obtain reduced-interference signal samples. In some embodiments, the scaling factor is determined by correlating the sampled signal of interest with the sampled distortion signal.
摘要翻译：公开了用于补偿由接收机电路中的非线性引起的接收信号失真的电路和方法。示例性接收器电路包括失真波形发生器，其被配置为近似用于下变频接收的射频信号的下变频器电路的一个或多个非线性响应特性。使用与用于滤波包括由强干扰信号引起的期望信号和非线性失真产物的中频信号基本相似的滤波器或滤波器来滤波所产生的估计失真波形。对经滤波的估计失真波形和中频进行采样，以获得采样的失真信号和感兴趣的采样信号。采样的失真信号被缩放，并从感兴趣的采样信号中减去以获得减小干扰的信号样本。在一些实施例中，通过将感兴趣的采样信号与采样的失真信号相关来确定缩放因子。

7. 发明授权

US08351874B2 System and method for adaptive antenna impedance matching 有权
标题翻译：自适应天线阻抗匹配的系统和方法
公开(公告)号：US08351874B2
公开(公告)日：2013-01-08
申请号：US12099550
申请日：2008-04-08
申请人： Paul Wilkinson Dent , Sven Mattisson
发明人： Paul Wilkinson Dent , Sven Mattisson
IPC分类号： H03C1/52
CPC分类号： H04B1/0458
摘要： Methods and apparatus are disclosed for automatically adjusting antenna impedance match in a wireless transceiver employing phase-amplitude modulation. According to some embodiments of the invention, a wireless transceiver comprises a transmitter circuit and a receiver circuit connected to the antenna by a transmit/receive duplexer. An electronically adjustable matching network is located between the transmitter output and the antenna. To control the adjustable matching network, a directional coupler is located between the transmitter output and the matching network to separate transmit signals reflected from the antenna system, including the antenna, the matching network and the T/R duplexer. The reflected transmit signals are routed to the receiver circuit, which digitizes the reflected signal and determines an antenna reflection coefficient based on the digitized reflected signal and the modulation signal used to create the transmit signal. The complex antenna reflection coefficient is used to determine any adjustment needed to the antenna matching network.
摘要翻译：公开了用于在采用相位幅度调制的无线收发器中自动调整天线阻抗匹配的方法和装置。根据本发明的一些实施例，无线收发器包括发射机电路和通过发射/接收双工器连接到天线的接收机电路。电子可调匹配网络位于发射机输出和天线之间。为了控制可调匹配网络，定向耦合器位于发射机输出和匹配网络之间，以分离天线系统反射的发射信号，包括天线，匹配网络和T / R双工器。反射的发射信号被路由到接收机电路，其对反射信号进行数字化，并且基于用于产生发射信号的数字化反射信号和调制信号确定天线反射系数。复合天线反射系数用于确定天线匹配网络所需的任何调整。

8. 发明申请

US20090325509A1 Methods and Apparatus for Reducing Own-Transmitter Interference in Low-IF and Zero-IF Receivers 有权
标题翻译：降低低中频和零中频接收机自身发射机干扰的方法和装置
公开(公告)号：US20090325509A1
公开(公告)日：2009-12-31
申请号：US12163248
申请日：2008-06-27
申请人： Sven Mattisson , Paul Wilkinson Dent
发明人： Sven Mattisson , Paul Wilkinson Dent
IPC分类号： H04B1/40
CPC分类号： H04B1/525
摘要： Circuits and methods are disclosed for reducing interference from transmitter leakage in a radio transceiver. An exemplary method for reducing interference from transmitter leakage in a radio transceiver comprises downconverting, filtering, and sampling a radio frequency signal comprising a desired signal and a transmitter leakage signal to obtain a sampled signal of interest. The method further comprises generating a sampled distortion signal estimate that estimates one or more distortion products of the transmitter leakage signal, such as a squared amplitude obtained from a square-law device or corresponding digital function. Finally, the method comprises combining the sampled distortion signal estimate with the sampled signal of interest to obtain interference-reduced signal samples. In some embodiments, this may comprise correlating the sampled distortion signal estimate with the sampled signal of interest to determine a scaling factor, scaling the sampled distortion signal estimate with the scaling factor, and subtracting the scaled distortion signal estimate from the sampled signal of interest to obtain the interference-reduced signal samples.
摘要翻译：公开了用于减少无线电收发器中发射机泄漏的干扰的电路和方法。用于减少无线电收发机中的发射机泄漏的干扰的示例性方法包括对包括期望信号和发射机泄漏信号的射频信号进行下变频，滤波和采样，以获得感兴趣的采样信号。该方法还包括生成估计发射机泄漏信号的一个或多个失真产物的采样失真信号估计，例如从平方律装置获得的平方振幅或相应的数字功能。最后，该方法包括将采样的失真信号估计与所关注的采样信号组合以获得干扰减小的信号采样。在一些实施例中，这可以包括将采样的失真信号估计与所关注的采样信号相关联以确定缩放因子，用缩放因子缩放采样的失真信号估计，以及从所感测的采样信号中减去经缩放的失真信号估计获得干扰减少信号样本。

9. 发明授权

US08055234B2 Methods and apparatus for suppressing strong-signal interference in low-IF receivers 有权
标题翻译：抑制低中频接收机强信号干扰的方法和装置
公开(公告)号：US08055234B2
公开(公告)日：2011-11-08
申请号：US12147962
申请日：2008-06-27
申请人： Sven Mattisson , Paul Wilkinson Dent
发明人： Sven Mattisson , Paul Wilkinson Dent
IPC分类号： H04B1/16
CPC分类号： H04B1/109 , H04B1/30
摘要： Circuits and methods are disclosed for compensating for received signal distortion caused by non-linearities in the receiver circuitry. An exemplary receiver circuit includes a distortion waveform generator configured to approximate one or more non-linear response characteristics of a downconverter circuit used to downconvert the received radio frequency signal. The estimated distortion waveform thus produced is filtered, using a filter or filters substantially similar to those used for filtering an intermediate frequency signal that includes the desired signal and non-linear distortion products caused by strong interfering signals. The filtered estimated distortion waveform and the intermediate frequency are sampled, to obtain a sampled distortion signal and a sampled signal of interest. The sampled distortion signal is scaled, and subtracted from the sampled signal of interest to obtain reduced-interference signal samples. In some embodiments, the scaling factor is determined by correlating the sampled signal of interest with the sampled distortion signal.
摘要翻译：公开了用于补偿由接收机电路中的非线性引起的接收信号失真的电路和方法。示例性接收器电路包括失真波形发生器，其被配置为近似用于下变频接收的射频信号的下变频器电路的一个或多个非线性响应特性。使用与用于滤波包括由强干扰信号引起的期望信号和非线性失真产物的中频信号基本相似的滤波器或滤波器来滤波所产生的估计失真波形。对经滤波的估计失真波形和中频进行采样，以获得采样的失真信号和感兴趣的采样信号。采样的失真信号被缩放，并从感兴趣的采样信号中减去以获得减小干扰的信号样本。在一些实施例中，通过将感兴趣的采样信号与采样的失真信号相关来确定缩放因子。

10. 发明授权

US07995973B2 Own transmitter interference tolerant transceiver and receiving methods 有权
标题翻译：自己的发射机干扰收发和收发方式
公开(公告)号：US07995973B2
公开(公告)日：2011-08-09
申请号：US12339726
申请日：2008-12-19
申请人： Paul Wilkinson Dent , Sven Mattisson
发明人： Paul Wilkinson Dent , Sven Mattisson
IPC分类号： H04B1/40
CPC分类号： H04B1/525
摘要： Circuits and methods are disclosed for reducing interference from transmitter leakage in a radio transceiver. An exemplary method for reducing interference from transmitter leakage in a radio transceiver comprises downconverting, filtering, and sampling a radio frequency signal comprising a desired signal and a transmitter leakage signal to obtain a sampled signal of interest. The method further comprises generating a sampled distortion signal estimate that estimates one or more distortion products of the transmitter leakage signal, such as a squared amplitude obtained from a square-law device or corresponding digital function. Further, the method comprises dividing the sampled distortion signal estimate and the sampled signal of interest into a plurality of frequency channels. Finally, for a selected number of frequency channels, the method comprises combining the sampled distortion signal estimate for a frequency channel with the corresponding sampled signal of interest for the same frequency channel to obtain interference-reduced signal samples for the frequency channel.
摘要翻译：公开了用于减少无线电收发器中发射机泄漏的干扰的电路和方法。用于减少无线电收发机中的发射机泄漏的干扰的示例性方法包括对包括期望信号和发射机泄漏信号的射频信号进行下变频，滤波和采样，以获得感兴趣的采样信号。该方法还包括生成估计发射机泄漏信号的一个或多个失真产物的采样失真信号估计，例如从平方律装置获得的平方振幅或相应的数字功能。此外，该方法包括将采样的失真信号估计和所获取的采样信号分成多个频率信道。最后，对于选定数量的频道，该方法包括将用于频率信道的采样失真信号估计与相同频率信道的对应采样信号组合，以获得用于频率信道的干扰减小信号样本。

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