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公开(公告)号：US08843094B2
公开(公告)日：2014-09-23
申请号：US12853131
申请日：2010-08-09
CPC分类号： H04W52/52 , H04B17/318 , H04W52/245 , H04W52/246
摘要： Aspects of a method and system for integrated blocker detection and automatic gain control are provided. In this regard, a communication device may generate one or more first signal strength indications based on a strength of a received signal at a first point in the analog front-end of the communication device. The communication device may generate one or more second signal strength indications based on a strength of the received signal at a second point in a digital processing module of the communication device. The first point in the analog front-end may be an input or an output of a down-conversion mixer. The second point in the digital processing module may be an output of an analog-to-digital converter or an output of a channel selection filter. The communication device may control, utilizing the first signal strength indication(s) and the second signal strength indication(s), a gain of one or more components of the communication device.
摘要翻译： 提供了一种用于集成阻断检测和自动增益控制的方法和系统的方面。 在这方面，通信设备可以基于在通信设备的模拟前端的第一点处的接收信号的强度来产生一个或多个第一信号强度指示。 通信设备可以基于通信设备的数字处理模块中的第二点处的接收信号的强度来生成一个或多个第二信号强度指示。 模拟前端的第一点可以是下变频混频器的输入或输出。 数字处理模块中的第二点可以是模数转换器的输出或通道选择滤波器的输出。 通信设备可以利用第一信号强度指示和第二信号强度指示来控制通信设备的一个或多个组件的增益。
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公开(公告)号：US20120004005A1
公开(公告)日：2012-01-05
申请号：US12853131
申请日：2010-08-09
IPC分类号： H04B7/00
CPC分类号： H04W52/52 , H04B17/318 , H04W52/245 , H04W52/246
摘要： Aspects of a method and system for integrated blocker detection and automatic gain control are provided. In this regard, a communication device may generate one or more first signal strength indications based on a strength of a received signal at a first point in the analog front-end of the communication device. The communication device may generate one or more second signal strength indications based on a strength of the received signal at a second point in a digital processing module of the communication device. The first point in the analog front-end may be an input or an output of a down-conversion mixer. The second point in the digital processing module may be an output of an analog-to-digital converter or an output of a channel selection filter. The communication device may control, utilizing the first signal strength indication(s) and the second signal strength indication(s), a gain of one or more components of the communication device.
摘要翻译： 提供了一种用于集成阻断检测和自动增益控制的方法和系统的方面。 在这方面，通信设备可以基于在通信设备的模拟前端的第一点处的接收信号的强度来产生一个或多个第一信号强度指示。 通信设备可以基于通信设备的数字处理模块中的第二点处的接收信号的强度来生成一个或多个第二信号强度指示。 模拟前端的第一点可以是下变频混频器的输入或输出。 数字处理模块中的第二点可以是模数转换器的输出或通道选择滤波器的输出。 通信设备可以利用第一信号强度指示和第二信号强度指示来控制通信设备的一个或多个组件的增益。
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公开(公告)号：US08032102B2
公开(公告)日：2011-10-04
申请号：US12008888
申请日：2008-01-15
IPC分类号： H04B1/10
摘要： A system for correcting a second order intermodulation product in a direct conversion receiver is provided. The system includes a cross-covariance system receiving a data signal and a second order intermodulation estimate signal and generating a cross-covariance value. An auto-covariance system receives the second order intermodulation estimate signal and generates an auto covariance value. A buffer system stores a second order intermodulation product correction factor. A divider receives the cross-covariance value, the auto-covariance value and the second order intermodulation product correction factor and generates a running average second order intermodulation product correction factor.
摘要翻译： 提供一种用于在直接转换接收机中校正二阶互调产物的系统。 该系统包括接收数据信号和二阶互调估计信号并产生交叉协方差值的互协方差系统。 自动协方差系统接收二阶互调估计信号并产生自协方差值。 缓冲系统存储二阶互调产物校正因子。 分频器接收交叉协方差值，自协方差值和二阶互调乘积校正因子，并生成运行平均二阶互调乘积校正因子。
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4.发明授权System and method for allowing a TDMA/CDMA portable transceiver to operate with closed loop power control 有权用于允许TDMA / CDMA便携式收发器在闭环功率控制下操作的系统和方法公开(公告)号：US07369871B2
公开(公告)日：2008-05-06
申请号：US10915186
申请日：2004-08-10
CPC分类号： H03F1/0211 , H03F1/0233 , H03F2200/294 , H03F2200/372 , H03G3/3047
摘要： A method for a closed power control feedback loop allows a single portable transceiver architecture to be used for systems in which a transmit signal including both a phase modulated (PM) component and an amplitude modulated (AM) component are supplied to a power amplifier and in systems in which the transmit signal has only a PM component supplied to a power amplifier. By injecting the inverse of the AM portion of the desired transmit signal into the closed power control feedback loop, the feedback loop will not cancel the AM portion of the signal, thus allowing a system where both a PM component and an AM component of the transmit signal are present at the output of the power amplifier to function using a closed power control feedback loop.
摘要翻译： 用于闭合功率控制反馈环路的方法允许单个便携式收发器架构用于其中包括相位调制（PM）分量和调幅（AM）分量两者的发射信号被提供给功率放大器的系统，并且在 其中发射信号仅具有提供给功率放大器的PM分量的系统。 通过将期望的发射信号的AM部分的反相注入到闭合功率控制反馈环路中，反馈回路将不会消除信号的AM部分，从而允许其中PM分量和发射的AM分量两者的系统 信号存在于功率放大器的输出端，以使用闭合功率控制反馈回路工作。
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公开(公告)号：US20060270375A1
公开(公告)日：2006-11-30
申请号：US11137196
申请日：2005-05-24
申请人： Norman Beamish , William Domino , Morten Damgaard
发明人： Norman Beamish , William Domino , Morten Damgaard
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.
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公开(公告)号：US07082169B2
公开(公告)日：2006-07-25
申请号：US10207320
申请日：2002-07-29
IPC分类号： H03K7/06
CPC分类号： H03C3/0983 , H03C3/0966 , H03C5/00 , H04L27/0002 , H04L27/2017
摘要： A mirror translation loop upconverter that is capable of upconverting both constant envelope and non-constant envelope modulation formats is disclosed. Embodiments of the invention provide the ability to upconvert a transmit signal that includes only a phase-modulated component, only an amplitude-modulated component, or both a phase-modulated component and an amplitude-modulated component. If the transmit signal includes both a phase-modulated signal component and an amplitude-modulated signal component, the phase-modulated signal component and the amplitude-modulated signal component are supplied to a pair of phase shifters. The phase shifters alter the phase of the phase-modulated signal by an amount related to the amplitude of the amplitude-modulated signal. The phase shifters oppositely alter the phase of the phase-modulated signal, and therefore supply complementary phase versions of the phase-modulated signal. The phase-altered phase-modulated signals from the phase shifters are then supplied to a pair of translation loops. The translation loops are arranged in mirror architecture so that each translation loop receives the phase-altered phase-modulated signals. Each translation loop upconverts the signals and supplies a vector. The vectors supplied by the two translation loops are constant in magnitude, and have complementary phase. The two vectors are added together to provide a signal to a power amplifier. The signal represents both the phase and amplitude information to be transmitted.
摘要翻译： 公开了能够上变频恒定包络和非恒定包络调制格式的镜像平移环上变频器。 本发明的实施例提供将仅包括相位调制分量，仅调幅分量，或相位调制分量和幅度调制分量两者的发射信号上转换的能力。 如果发送信号包括相位调制信号分量和幅度调制信号分量，则相位调制信号分量和幅度调制信号分量被提供给一对移相器。 移相器将相位调制信号的相位改变与幅度调制信号的振幅相关的量。 移相器相反地改变相位调制信号的相位，并因此提供相位调制信号的互补相位版本。 然后将来自移相器的相位改变的相位调制信号提供给一对平移环路。 平移环路以镜像架构布置，使得每个平移环路接收相位改变的相位调制信号。 每个平移循环将信号上变频并提供向量。 由两个平移环提供的向量在幅度上是恒定的，并且具有互补相位。 将两个矢量相加在一起以向功率放大器提供信号。 信号表示要发送的相位和幅度信息。
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7.发明授权Multiple step switched translation loop for power amplifier feedback control 有权用于功率放大器反馈控制的多步切换平移环路公开(公告)号：US06792282B1
公开(公告)日：2004-09-14
申请号：US09666698
申请日：2000-09-21
IPC分类号： H04B102
CPC分类号： H03G3/3047 , H03G2201/103 , H03G2201/202 , H03G2201/206 , H03G2201/307
摘要： A translation loop modulator and power amplifier in a phase and amplitude modulated transmission environment includes a translation loop having a phase locked loop and that is configured to receive a first modulated signal (PM) and that is also configured to provide a frequency specific modulated signal. The invention also includes a power amplifier configured to receive the frequency specific modulated signal, a variable gain element configured to provide a second modulated signal (AM) to the power amplifier and a switching element configured to receive a portion of an output of the translation loop and a portion of an output power of the power amplifier. The switching element is configured to apply the output portion of the translation loop to an input of the translation loop during a first time period and apply the detected output power portion of the power amplifier to the input of the translation loop during a second time period, thus allowing the phase locked loop in the translation loop to correct for any phase shift caused by the power amplifier.
摘要翻译： 在相位和幅度调制传输环境中的平移环路调制器和功率放大器包括具有锁相环的平移环路，并且被配置为接收第一调制信号（PM），并且还被配置为提供频率特定调制信号。 本发明还包括被配置为接收频率特定调制信号的功率放大器，被配置为向功率放大器提供第二调制信号（AM）的可变增益元件和被配置为接收转换回路的输出的一部分的开关元件 和功率放大器的输出功率的一部分。 开关元件被配置为在第一时间段期间将平移环路的输出部分施加到平移环路的输入端，并且在第二时间周期期间将功率放大器的检测输出功率部分施加到平移环路的输入端， 从而允许平移环路中的锁相环校正由功率放大器引起的任何相移。
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8.发明授权System for closed loop power control using a linear or a non-linear power amplifier 有权使用线性或非线性功率放大器进行闭环功率控制的系统公开(公告)号：US06670849B1
公开(公告)日：2003-12-30
申请号：US09650987
申请日：2000-08-30
IPC分类号： H03G320
CPC分类号： H03G3/3042 , H03F1/02 , H03F2200/294 , H03F2200/372 , H04W52/52
摘要： A system for a closed power control feedback loop allows for the use of a non-linear amplifier for amplifying a phase modulated (PM) signal while introducing an inverse version of the desired amplitude modulated (AM) signal into the feedback loop using a variable gain element. By introducing an inverse version of the desired AM portion of the signal into the power control feedback loop, the non-linear, and highly efficient, power amplifier may be used to amplify only the PM portion of the signal, while the AM portion is introduced by the power control feedback loop. In another aspect of the invention, an inverse version of the AM portion of the desired transmit signal is introduced into the power control feedback loop of an amplifier that is amplifying both a phase modulated signal and an amplitude modulated signal. By introducing an inverse version of the desired AM signal into the power control feedback loop, the power control feedback loop may not cancel the AM component present at the output of the power amplifier. In yet another aspect of the invention, the desired AM signal is injected into the feedback loop along with the power control reference signal.
摘要翻译： 用于闭合功率控制反馈回路的系统允许使用非线性放大器来放大相位调制（PM）信号，同时使用可变增益将所需幅度调制（AM）信号的逆版本引入反馈环路 元件。 通过将信号的期望的AM部分的逆版本引入功率控制反馈回路中，可以使用非线性和高效的功率放大器来仅放大信号的PM部分，同时引入AM部分 通过功率控制反馈回路。 在本发明的另一方面，将期望的发送信号的AM部分的逆版本引入放大器的功率控制反馈环路，该放大器正在放大相位调制信号和幅度调制信号。 通过将所需AM信号的逆版本引入功率控制反馈回路中，功率控制反馈回路可能不会消除存在于功率放大器输出端的AM分量。 在本发明的另一方面，所需的AM信号与功率控制参考信号一起被注入到反馈回路中。
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公开(公告)号：US20120027137A1
公开(公告)日：2012-02-02
申请号：US13253030
申请日：2011-10-04
摘要： A system for correcting a second order intermodulation product in a direct conversion receiver is provided. The system includes a cross-covariance system receiving a data signal and a second order intermodulation estimate signal and generating a cross-covariance value. An auto-covariance system receives the second order intermodulation estimate signal and generates an auto covariance value. A buffer system stores a second order intermodulation product correction factor. A divider receives the cross-covariance value, the auto-covariance value and the second order intermodulation product correction factor and generates a running average second order intermodulation product correction factor.
摘要翻译： 提供一种用于在直接转换接收机中校正二阶互调产物的系统。 该系统包括接收数据信号和二阶互调估计信号并产生交叉协方差值的互协方差系统。 自动协方差系统接收二阶互调估计信号并产生自协方差值。 缓冲系统存储二阶互调产物校正因子。 分频器接收交叉协方差值，自协方差值和二阶互调乘积校正因子，并生成运行平均二阶互调乘积校正因子。
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公开(公告)号：US20110268216A1
公开(公告)日：2011-11-03
申请号：US12771559
申请日：2010-04-30
IPC分类号： H04L27/00
CPC分类号： H04W52/12 , H03G3/001 , H03G3/3089 , H04B2001/0416
摘要： Embodiments provide improved systems and methods of gain control and calibration for wireless transmitters. In particular, embodiments allow linear gain control over the entire transmitter gain control range, independent of temperature/process variations. Embodiments require very low power consumption compared to existing approaches. Embodiments may also be used for gain control calibration during production time, thereby substantially reducing production calibration time and cost.
摘要翻译： 实施例提供了用于无线发射机的增强控制和校准的改进的系统和方法。 特别地，实施例允许在整个发射机增益控制范围内的线性增益控制，与温度/过程变化无关。 与现有方法相比，实施例需要非常低的功耗。 实施例也可用于在生产时间期间的增益控制校准，从而大大减少生产校准时间和成本。
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