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31.发明授权Radio frequency (RF) receiver with double loop integrated fast response automatic gain control (AGC) 失效具有双回路集成快速响应自动增益控制（AGC）的射频（RF）接收机公开(公告)号：US07593484B2
公开(公告)日：2009-09-22
申请号：US11241428
申请日：2005-09-30
CPC分类号： H04L27/3809
摘要： A radio frequency (RF) receiver device comprises a receiver system that receives an analog radio frequency signal and downconverts the analog radio frequency signal to a downconverted analog signal, the receiver system further including a peak signal detector configured to determine a peak signal level of the downconverted analog signal, and an automatic gain control adjustment element configured to determine whether the peak signal level falls within a predetermined range, and configured to generate, in the RF receiver, a gain control signal controlling the gain of at least one analog component based on whether the peak signal level falls within the predetermined range.
摘要翻译： 射频（RF）接收机设备包括接收模拟射频信号并将模拟射频信号下变频为下变频模拟信号的接收机系统，所述接收机系统还包括峰值信号检测器，该峰值信号检测器被配置为确定 以及自动增益控制调整元件，被配置为确定峰值信号电平是否落在预定范围内，并且被配置为在RF接收器中产生控制至少一个模拟分量的增益的增益控制信号，该增益控制信号基于 峰值信号电平是否落在预定范围内。
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公开(公告)号：US06259752B1
公开(公告)日：2001-07-10
申请号：US09495993
申请日：2000-02-01
IPC分类号： H03D104
CPC分类号： H04B1/123
摘要： A system for reducing internal interference in a radio-frequency (RF) receiver includes providing a plurality of time slots within a frame where the receiver is configured to receive external RF signals during a receive time slot within the frame. External RF signals are the prevented from reaching a front-end portion of the receiver and the receiver is activated, and a predetermined period of time is permitted to elapse to permit the receiver to settle. An interference data collection is performed during a period of time prior to a predetermined receive time slot where the data collected represents internally generated interference signals. The data collected during the interference data collection is processed to determine a bias value corresponding to the interference signals, and the receiver is then permitted to receive external RF signals during the predetermined receive time slot so that data is collected during the predetermined receive time slot. The data collected during the predetermined receive time slot is processed and the bias value is subtracted from the data collected to provide output data corresponding to the external RF signals absent the interference signals.
摘要翻译： 用于减少射频（RF）接收机内部干扰的系统包括在帧内提供多个时隙，其中接收机被配置为在帧内的接收时隙期间接收外部RF信号。 外部RF信号被阻止到达接收机的前端部分，并且接收器被激活，并且允许经过预定时间段以允许接收机安定。 在预定的接收时隙之前的一段时间内执行干扰数据采集，其中收集的数据表示内部产生的干扰信号。 在干扰数据收集期间收集的数据被处理以确定对应于干扰信号的偏置值，然后允许接收机在预定接收时隙期间接收外部RF信号，以便在预定接收时隙期间收集数据。 在预定接收时隙期间收集的数据被处理，并且从收集的数据中减去偏差值，以提供对应于不存在干扰信号的外部RF信号的输出数据。
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公开(公告)号：US07526265B2
公开(公告)日：2009-04-28
申请号：US11137196
申请日：2005-05-24
IPC分类号： H04B1/10
摘要： Embodiments of a receiver impairment estimation and correction system and method that can be implemented in a low intermediate frequency receiver system are disclosed. In one embodiment, among others, a method for operating a receiver is disclosed that comprises receiving a radio frequency signal, downconverting the radio frequency signal to a downconverted signal comprising an in-phase component and quadrature-phase component, buffering the downconverted signal in a memory, estimating receiver impairments associated with the in-phase component and the quadrature-phase component for a defined time period, and compensating for the receiver impairments for each defined time period.
摘要翻译： 公开了可以在低中频接收机系统中实现的接收机损害估计和校正系统和方法的实施例。 在一个实施例中，公开了一种用于操作接收机的方法，其包括接收射频信号，将射频信号下变频到包括同相分量和正交相分量的下变频信号，将下变频信号缓存在 存储器，在定义的时间段内估计与同相分量和正交相分量相关联的接收机损伤，以及补偿每个定义的时间段的接收机损伤。
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公开(公告)号：US07480349B2
公开(公告)日：2009-01-20
申请号：US10963049
申请日：2004-10-12
IPC分类号： H04L27/00
CPC分类号： H04L27/3863 , H04B1/1036 , H04B1/109 , H04B1/30
摘要： Embodiments of a low intermediate frequency system and method are disclosed. In one embodiment, among others, a method for operating a receiver is disclosed that comprises receiving a radio frequency signal, downconverting the radio frequency signal to a downconverted signal comprising an in-phase component and quadrature component, and estimating a gain and phase imbalance between the in-phase component and the quadrature component.
摘要翻译： 公开了一种低中频系统和方法的实施例。 在一个实施例中，公开了一种用于操作接收机的方法，其包括：接收射频信号，将射频信号下变频到包括同相分量和正交分量的下变频信号，以及估计无线电频率信号之间的增益和相位不平衡 同相分量和正交分量。
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35.发明授权Transmitter architecture having a secondary phase-error correction loop including an amplitude reconstruction system 有权具有包括振幅重建系统的二次相位误差校正回路的发射机架构公开(公告)号：US06650875B1
公开(公告)日：2003-11-18
申请号：US09650831
申请日：2000-08-30
IPC分类号： H04B102
CPC分类号： H03F1/3247 , H03F2200/294 , H03F2200/372
摘要： A system for using a translation loop upconverter and power amplifier including a secondary phase-error correction loop uses the output of the upconverter to lock a feedback loop during a time in which the output of the power amplifier is insufficient to provide feedback to the upconverter. After the power amplifier has developed sufficient power to provide feedback to the upconverter, the feedback to the upconverter is taken from the output of the power amplifier. By placing a phase detector and phase shifter in the secondary feedback path taken from the output of the power amplifier, any phase distortion present in the system can be detected and corrected.
摘要翻译： 用于使用平移环上变频器和包括次相位误差校正环路的功率放大器的系统使用上变频器的输出在功率放大器的输出不足以向上变频器提供反馈的时间期间锁定反馈回路。 在功率放大器已经开发足够的功率以向上变频器提供反馈之后，向上变频器的反馈取自功率放大器的输出。 通过将相位检测器和移相器放置在从功率放大器的输出端取得的次级反馈路径中，可以检测和校正系统中存在的任何相位失真。
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公开(公告)号：US09071325B2
公开(公告)日：2015-06-30
申请号：US13232873
申请日：2011-09-14
CPC分类号： H04B1/1638 , H04B1/006 , H04B1/1018
摘要： A low noise receiver includes a downconverter configured to receive a radio frequency (RF) signal, the downconverter comprising a switching architecture configured to generate a plurality of output phases based on a respective plurality of local oscillator (LO) signals, a differencing circuit configured to combine the plurality of output phases such that an nth output phase is differenced with an (n+K)th output phase, resulting in gain-added output phases, and a summation filter configured to receive the gain-added output phases and configured to combine the gain-added output phases such that a response of the receiver effectively reduces odd harmonics of the RF signal.
摘要翻译： 低噪声接收器包括被配置为接收射频（RF）信号的下变频器，所述下变频器包括被配置为基于相应的多个本地振荡器（LO）信号产生多个输出相位的开关结构;差分电路，被配置为 组合多个输出相位，使得第n个输出相位与第（n + K）个输出相位差，产生增益输出相位，以及相加滤波器，被配置为接收增益输出相位并被配置为组合 增益输出相位使得接收器的响应有效地降低了RF信号的奇次谐波。
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公开(公告)号：US20120063555A1
公开(公告)日：2012-03-15
申请号：US13232873
申请日：2011-09-14
IPC分类号： H04B1/10
CPC分类号： H04B1/1638 , H04B1/006 , H04B1/1018
摘要： A low noise receiver includes a downconverter configured to receive a radio frequency (RF) signal, the downconverter comprising a switching architecture configured to generate a plurality of output phases based on a respective plurality of local oscillator (LO) signals, a differencing circuit configured to combine the plurality of output phases such that an nth output phase is differenced with an (n+K)th output phase, resulting in gain-added output phases, and a summation filter configured to receive the gain-added output phases and configured to combine the gain-added output phases such that a response of the receiver effectively reduces odd harmonics of the RF signal.
摘要翻译： 低噪声接收器包括被配置为接收射频（RF）信号的下变频器，所述下变频器包括被配置为基于相应的多个本地振荡器（LO）信号产生多个输出相位的开关结构;差分电路，被配置为 组合多个输出相位，使得第n个输出相位与第（n + K）个输出相位差，产生增益输出相位，以及相加滤波器，被配置为接收增益输出相位并被配置为组合 增益输出相位使得接收器的响应有效地降低了RF信号的奇次谐波。
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38.发明授权System for adaptively filtering a received signal in a wireless receiver 有权用于在无线接收机中自适应地过滤接收到的信号的系统公开(公告)号：US07512392B2
公开(公告)日：2009-03-31
申请号：US10917552
申请日：2004-08-12
CPC分类号： H04B1/1036
摘要： An adaptive band-pass filter for a wireless receiver comprises a band-pass filter associated with the receiver, the band-pass filter configured to selectively filter the received signal, and a switch responsive to a control signal, the switch configured to control the band-pass filter based on a level of the received signal.
摘要翻译： 用于无线接收机的自适应带通滤波器包括与接收器相关联的带通滤波器，配置成选择性地滤波接收信号的带通滤波器和响应于控制信号的开关，该开关被配置为控制频带 基于接收信号电平的通滤波器。
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公开(公告)号：US20120242379A1
公开(公告)日：2012-09-27
申请号：US13427616
申请日：2012-03-22
IPC分类号： H03B19/00
CPC分类号： H03H11/24 , H02M3/07 , H03B5/1212 , H03B5/1228 , H03B5/1265 , H03B5/24 , H03B29/00 , H03F3/19 , H03F3/21 , H03F2200/451 , H03K3/012 , H03K3/013 , H04B1/0475 , H04L25/08 , H04W28/14
摘要： Apparatus and methods for distributing spurious tones through the frequency domain are disclosed. One such apparatus can include a dithering circuit configured to generate a sequence of numbers that exhibit statistical randomness and a variable frequency circuit configured to adjust a frequency of an output based on the sequence of numbers so as to spread energy of spurious tones in a frequency response of the output to lower a noise floor. In one example, spurious tones can be reduced in a negative voltage generator of a radio frequency (RF) attenuator.
摘要翻译： 公开了通过频域分配杂音的装置和方法。 一种这样的装置可以包括抖动电路，其被配置为产生呈现统计随机性的数字序列，以及可变频率电路，其被配置为基于数字序列来调整输出的频率，以便在频率响应中扩散杂音的能量 的输出以降低本底噪声。 在一个示例中，在射频（RF）衰减器的负电压发生器中可以减少杂散音。
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公开(公告)号：US08823459B2
公开(公告)日：2014-09-02
申请号：US13427616
申请日：2012-03-22
CPC分类号： H03H11/24 , H02M3/07 , H03B5/1212 , H03B5/1228 , H03B5/1265 , H03B5/24 , H03B29/00 , H03F3/19 , H03F3/21 , H03F2200/451 , H03K3/012 , H03K3/013 , H04B1/0475 , H04L25/08 , H04W28/14
摘要： Apparatus and methods for distributing spurious tones through the frequency domain are disclosed. One such apparatus can include a dithering circuit configured to generate a sequence of numbers that exhibit statistical randomness and a variable frequency circuit configured to adjust a frequency of an output based on the sequence of numbers so as to spread energy of spurious tones in a frequency response of the output to lower a noise floor. In one example, spurious tones can be reduced in a negative voltage generator of a radio frequency (RF) attenuator.
摘要翻译： 公开了通过频域分配杂音的装置和方法。 一种这样的装置可以包括抖动电路，其被配置为产生呈现统计随机性的数字序列，以及可变频率电路，其被配置为基于数字序列来调整输出的频率，以便在频率响应中扩散杂音的能量 的输出以降低本底噪声。 在一个示例中，在射频（RF）衰减器的负电压发生器中可以减少寄生音。
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