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公开(公告)号：US06563891B1
公开(公告)日：2003-05-13
申请号：US09434444
申请日：1999-11-05
IPC分类号： H04L2708
CPC分类号： H03G3/3078 , H03G1/0023
摘要： A receiver having a digital automatic gain control (AGC) circuit is disclosed for use in a cellular communication system, including a Hierarchical Cellular System. The receiver includes a controller which switches between gain control values depending on system operational mode. In this way, the AGC can be optimized for different types of receive processing operations, e.g., traffic reception and measurement of other channels.
摘要翻译： 公开了一种具有数字自动增益控制（AGC）电路的接收机，用于包括分层蜂窝系统的蜂窝通信系统中。 接收机包括根据系统操作模式切换增益控制值的控制器。 以这种方式，AGC可以针对不同类型的接收处理操作进行优化，例如业务接收和其他信道的测量。
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公开(公告)号：US20180019593A1
公开(公告)日：2018-01-18
申请号：US15209958
申请日：2016-07-14
申请人： Paul Wilkinson Dent
发明人： Paul Wilkinson Dent
CPC分类号： H02J3/383 , H02J3/46 , H02J7/35 , H02J9/062 , H02J2009/067 , H02J2009/068 , H02M7/00 , H02M7/44 , H03K17/6874 , H03K2217/0009 , Y02B10/72 , Y02E10/563 , Y02E10/566
摘要： Sharing of load current in desired ratios between multiple electrical voltage sources is achieved without coupling between the sources by controlling a selection switch to select each voltage source for a proportion of the time at a high rate, the switching rate components being prevented from being seen by either the load or the sources through use of low-pass filters.
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公开(公告)号：US20180006601A1
公开(公告)日：2018-01-04
申请号：US15197431
申请日：2016-06-29
申请人： Paul Wilkinson Dent
发明人： Paul Wilkinson Dent
CPC分类号： H02J7/35 , H02H3/202 , H02H9/045 , H02J7/0029 , Y02E10/566
摘要： A method, circuit and system arrangement is described for providing rapid de-energization for safety reasons of conductors having a DC power source at both ends. The invention is particularly envisaged for use in solar energy systems in which a battery is charged by solar power from a photovoltaic array, the invention comprising controlling the array to interrupt charge current flow and then isolating the battery from the conductors to be de-energized in a fail-safe manner.
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公开(公告)号：US20170025942A1
公开(公告)日：2017-01-26
申请号：US14808838
申请日：2015-07-24
申请人： Paul Wilkinson Dent
发明人： Paul Wilkinson Dent
IPC分类号： H02M1/08
摘要： A solid state power transformer is described for converting an input power signal at a first phase or voltage to an output signal of a second voltage or opposite phase by the use of bidirectional solid state switches switched at a high carrier frequency to produce a double-sideband, suppressed-carrier representation of the input power signal, which is then synchronously demodulated using further similar switches to produce the desired output. It is further disclosed that multiple instances of the above with relative phase-staggering of the switching frequency may be operated in parallel and activated or deactivated according to output current demand to provide maximum efficiency over a wide range of current and power levels.
摘要翻译： 描述了一种固态电力变压器，用于通过使用以高载波频率切换的双向固态开关将第一相位或者电压的输入功率信号转换为第二电压或相反相位的输出信号，以产生双边带 ，输入功率信号的抑制载波表示，然后使用进一步类似的开关同步解调以产生期望的输出。 还公开了上述具有开关频率的相对相位交错的多个实例可以并行地操作并且根据输出电流需求被激活或去激活，以在宽范围的电流和功率水平上提供最大效率。
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公开(公告)号：US20140355775A1
公开(公告)日：2014-12-04
申请号：US13908178
申请日：2013-06-03
IPC分类号： H04R3/00
CPC分类号： H04R3/002 , H04R29/005 , H04R2201/401
摘要： An acoustic noise canceling microphone arrangement and processor that uses a principal microphone and other microphones that may be incidentally or deliberately located in the vicinity of the principal microphone in order to derive an audio signal of enhanced signal-to-background noise ratio. In one implementation, the principal and incidental microphones comprise the microphone built into a mobile phone and the microphone built into a Bluetooth headset.
摘要翻译： 声学噪声消除麦克风布置和处理器，其使用主麦克风和可以附带地或故意地位于主麦克风附近的其他麦克风，以便导出增强的信噪比噪声比的音频信号。 在一个实现中，主要和附带麦克风包括内置在移动电话中的麦克风和内置在蓝牙耳机中的麦克风。
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6.发明授权Methods and apparatus for reducing own-transmitter interference in low-IF and zero-IF receivers 有权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
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。
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公开(公告)号：US08526482B2
公开(公告)日：2013-09-03
申请号：US11631790
申请日：2005-07-06
申请人： Paul Wilkinson Dent
发明人： Paul Wilkinson Dent
IPC分类号： H03C1/52
CPC分类号： H04J13/12 , H04J13/0044 , H04J13/0048 , H04J13/105 , H04J13/18
摘要： Systems for transmitting information symbols utilize ternary codes or pivot codes in conjunction with spread spectrum encoding. The systems comprise at least a first symbol source for supplying an information signal comprising at least a first stream of I,Q bit pairs, means for using either a ternary code or at least one pivot code for spreading the at least first stream of I,Q bit pairs and thereby respectively forming first chips and second chips, and a radio signal modulator for transmitting the first chips and second chips over a radio interface.
摘要翻译： 用于发送信息符号的系统利用与扩展频谱编码相结合的三进制码或枢纽码。 所述系统至少包括用于提供信息信号的第一符号源，所述信息信号至少包括第一流I，Q位对，用于使用三进制代码或至少一个枢纽码用于扩展I的至少第一流的装置， Q位对，从而分别形成第一芯片和第二芯片，以及无线电信号调制器，用于通过无线电接口发送第一芯片和第二芯片。
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公开(公告)号：US08345793B2
公开(公告)日：2013-01-01
申请号：US12045157
申请日：2008-03-10
申请人： Paul Wilkinson Dent
发明人： Paul Wilkinson Dent
IPC分类号： H04L25/03
CPC分类号： H04L25/03343 , H04L25/03834 , H04L2025/03414
摘要： A method and apparatus for compensating for ISI is described herein. A transmitter and receiver work together to develop pulse shaped OFDM symbols with reduced inter-channel ISI between pulse-shaped OFDM symbols transmitted on different sub-carriers at the same time, and inter-block ISI between pulse-shaped OFDM symbols transmitted on the same sub-carrier at different times. In addition, a pre-compensation element in the transmitter and/or a post-compensation element in the receiver compensate for diagonal ISI occurring between pulse-shaped OFDM symbols transmitted on different sub-carriers at different times.
摘要翻译： 本文描述了用于补偿ISI的方法和装置。 发射机和接收机一起工作以同时在不同子载波上发射的脉冲形OFDM符号之间产生具有减小的信道间ISI的脉冲形OFDM符号，并且在同一个发送的脉冲状OFDM符号之间的块间ISI 子载体在不同时间。 此外，发射机中的预补偿元件和/或接收器中的后补偿元件补偿在不同时刻在不同子载波上发射的脉冲形OFDM符号之间出现的对角线ISI。
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公开(公告)号：US08009628B2
公开(公告)日：2011-08-30
申请号：US11680150
申请日：2007-02-28
申请人： Paul Wilkinson Dent
发明人： Paul Wilkinson Dent
IPC分类号： H04W4/00
摘要： A method and apparatus described herein uses a mobility server to supplement the mobility management operations of a conventional mobile switching circuit (MSC). The mobility server receives mobility messages from a wireless terminal, and updates a location register associated with the MSC responsive to the received mobility messages. According to one exemplary embodiment, the mobility server has a pre-determined network address, such as a phone number, IP address, etc. The wireless terminal sends the mobility messages as user-plane messages to the pre-determined network address over a traffic data channel. In one exemplary embodiment, the mobility messages indicate the imminent loss of usable base station signals at an identified wireless terminal. For this embodiment, the mobility server may identify a satellite beam associated with the wireless terminal's location based on the received mobility messages, and update the location register accordingly.
摘要翻译： 本文描述的方法和装置使用移动性服务器补充常规移动交换电路（MSC）的移动性管理操作。 移动性服务器从无线终端接收移动性消息，响应于所接收的移动性消息，更新与MSC相关联的位置寄存器。 根据一个示例性实施例，移动性服务器具有预定的网络地址，例如电话号码，IP地址等。无线终端通过流量将移动消息作为用户平面消息发送到预定的网络地址 数据通道。 在一个示例性实施例中，移动性消息指示在所识别的无线终端处可用的基站信号即将丢失。 对于该实施例，移动性服务器可以基于接收到的移动性消息来识别与无线终端的位置相关联的卫星波束，并相应地更新位置寄存器。
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公开(公告)号：US20100159858A1
公开(公告)日：2010-06-24
申请号：US12339630
申请日：2008-12-19
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。
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