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公开(公告)号：US07277678B2
公开(公告)日：2007-10-02
申请号：US10281486
申请日：2002-10-28
CPC分类号： H03G3/3047 , H03F1/0211 , H03F2200/294 , H03F2200/372
摘要： A system for a fast, closed power control loop that quickly adjusts the output power of a power amplifier in a non-constant amplitude modulation format. Embodiments of the invention allow fast and precise closed loop power control in a communication system that has a transmit signal that includes a phase modulated component and an amplitude modulated signal component. By detecting the level of the transmit signal before and after the power amplifier, the invention ignores changes in the amplitude of the transmit signal, resulting in an accurate measure of the power amplifier gain. The difference between the level of the transmit signal before and after the power amplifier provides a signal that represents the gain of the power amplifier. The gain signal is compared with a reference signal to develop an error signal. The error signal is used to control the output of the power amplifier.
摘要翻译： 一种用于快速，闭合的功率控制回路的系统，其以非恒定幅度调制格式快速调节功率放大器的输出功率。 本发明的实施例允许在具有包括相位调制分量和幅度调制信号分量的发射信号的通信系统中的快速和精确的闭环功率控制。 通过检测功率放大器之前和之后的发射信号的电平，本发明忽略了发射信号幅度的变化，导致功率放大器增益的精确测量。 功率放大器之前和之后的发射信号的电平之间的差异提供了表示功率放大器的增益的信号。 将增益信号与参考信号进行比较以产生误差信号。 误差信号用于控制功率放大器的输出。
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32.发明授权Continuous closed-loop power control system including modulation injection in a wireless transceiver power amplifier 有权连续闭环功率控制系统，包括无线收发器功率放大器中的调制注入公开(公告)号：US06801784B1
公开(公告)日：2004-10-05
申请号：US09704930
申请日：2000-11-02
IPC分类号： H04B700
CPC分类号： H04W52/52 , H03F1/0272 , H03F2200/294 , H03F2200/372 , H04B2001/0416
摘要： A single continuous closed-loop power control feedback system provides seamless power control/for a power amplifier and also enables an AM signal to be injected into the power amplifier through the power amplifiers' control port. The AM signal is developed by an I/Q modulator and supplied to a comparator located in the power control loop. By using leakage from the power amplifier as feedback to a phase locked loop during initial power amplifier power ramp-up, the single continuous closed-loop power control system provides continuous feedback to the phase locked loop during the entire power amplification ramp-up period and eliminates the need for multiple feedback loops,
摘要翻译： 单个连续闭环功率控制反馈系统为功率放大器提供无缝功率控制，并且还可以通过功率放大器的控制端口将AM信号注入功率放大器。 AM信号由I / Q调制器开发，并提供给位于功率控制回路中的比较器。 在初始功率放大器功率提升期间，通过使用来自功率放大器的泄漏作为对锁相环的反馈，单个连续闭环功率控制系统在整个功率放大加速周期期间向锁相环提供连续反馈，并且 消除了对多个反馈回路的需要，
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公开(公告)号：US06545554B1
公开(公告)日：2003-04-08
申请号：US09675239
申请日：2000-09-29
IPC分类号： H03B518
CPC分类号： H03B5/1231 , H03B5/1212 , H03B5/124
摘要： This invention relates to an oscillator that includes first and second switching elements that each have a control terminal, and first and second conduction terminals. The control terminal of the second switching element is coupled to the first conduction terminal of the first switching element, and the control terminal of the first switching element is coupled to the first conduction terminal of the second switching element. The oscillator also may include first and second capacitive elements, first and second inductive elements, and a resistive element. The first capacitive element may be coupled between the control terminal of the first switching element and a first reference node, and the second capacitive element may be coupled between the control terminal of the second switching element and the first reference node. The first inductive element may be coupled between the control terminal of the first switching element and a second reference node, and the second inductive element may be coupled between the control terminal of the second switching element and the second reference node. The resistive element may be coupled between the second conduction terminals of the switching elements and the first reference node. One or both of the first and second capacitive elements may have a variable capacitance.
摘要翻译： 本发明涉及一种包括第一和第二开关元件的振荡器，每个开关元件都具有控制端子，以及第一和第二导电端子。 第二开关元件的控制端子耦合到第一开关元件的第一导通端子，第一开关元件的控制端子耦合到第二开关元件的第一导通端子。 振荡器还可以包括第一和第二电容元件，第一和第二电感元件以及电阻元件。 第一电容元件可以耦合在第一开关元件的控制端子和第一参考节点之间，并且第二电容元件可以耦合在第二开关元件的控制端子和第一参考节点之间。 第一电感元件可以耦合在第一开关元件的控制端子和第二参考节点之间，并且第二电感元件可以耦合在第二开关元件的控制端子和第二参考节点之间。 电阻元件可以耦合在开关元件的第二导电端子和第一参考节点之间。 第一和第二电容元件中的一个或两个可以具有可变电容。
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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：US06249190B1
公开(公告)日：2001-06-19
申请号：US09386957
申请日：1999-08-25
IPC分类号： H03B512
CPC分类号： H03B5/1231 , H03B5/1203 , H03B5/1218 , H03B5/124 , H03B5/1296 , H03B2201/0208
摘要： A differential oscillator based on a first Colpitts oscillator and a mirror image Colpitts oscillator that is coupled to the first Colpitts oscillator. This differential oscillator outputs differential voltage signals that are about 180 degrees out of phase. The differential oscillator may also be adapted to form a voltage controlled oscillator (VCO) such that the differential voltage signals output by the VCO can be varied. A transceiver for telecommunication devices such as cellular phones may use differential oscillators to generate a carrier signal on which a voice or data signal is modulated and the same differential oscillators to assist isolation of the voice or data signal from received signals.
摘要翻译： 基于第一Colpitts振荡器和耦合到第一Colpitts振荡器的镜像Colpitts振荡器的差分振荡器。 该差分振荡器输出大约相差180度的差分电压信号。 差分振荡器还可以适于形成压控振荡器（VCO），使得由VCO输出的差分电压信号可以变化。 用于诸如蜂窝电话的电信设备的收发机可以使用差分振荡器来产生其上调制了语音或数据信号的载波信号，并且使用相同的差分振荡器来辅助语音或数据信号与接收到的信号的隔离。
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36.发明授权Circuit, controller and methods for dynamic estimation and cancellation of phase and gain imbalances in quardrature signal paths of a receiver 有权电路，控制器和方法，用于动态估计和消除接收机的质量信号路径中的相位和增益失衡公开(公告)号：US08374300B2
公开(公告)日：2013-02-12
申请号：US13427549
申请日：2012-03-22
CPC分类号： H03D3/009 , H04L27/3863
摘要： A controller and a circuit work together to enable a selective and dynamic adjustment to correct phase and gain imbalances in quadrature signal paths of a receiver. Under select conditions, it has been determined that statistical estimates of gain and phase imbalance can be applied to adjust signals in the quadrature signal paths of a receiver. The controller validates the select conditions before updating the estimate of the gain imbalance and the estimate of the phase imbalance. The controller directs a compensator under select operating conditions such that validated dynamic estimates of the gain and phase imbalance or calibration data is applied to the quadrature signal paths. The controller disables the compensator and enables an estimator and a calculator when estimates are unavailable for the present operating conditions.
摘要翻译： 控制器和电路一起工作以实现选择性和动态调整以校正接收器的正交信号路径中的相位和增益不平衡。 在选择条件下，已经确定可以应用增益和相位不平衡的统计估计来调整接收机的正交信号路径中的信号。 控制器在更新增益不平衡的估计值和相位不平衡的估计值之前验证选择条件。 控制器在选择的操作条件下引导补偿器，使得增益和相位不平衡或校准数据的有效动态估计被应用于正交信号路径。 控制器禁用补偿器，并且当估计不能用于当前操作条件时，启用估计器和计算器。
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37.发明授权Circuit, controller and methods for dynamic estimation and cancellation of phase and gain imbalances in quadrature signal paths of a receiver 有权用于接收机正交信号路径中相位和增益失衡的动态估计和消除的电路，控制器和方法公开(公告)号：US08374297B2
公开(公告)日：2013-02-12
申请号：US12210229
申请日：2008-09-15
CPC分类号： H03D3/009 , H04L27/3863
摘要： A controller and a circuit work together to enable a selective and dynamic adjustment to correct phase and gain imbalances in quadrature signal paths of a receiver. Under select conditions, it has been determined that statistical estimates of gain and phase imbalance can be applied to adjust signals in the quadrature signal paths of a receiver. The controller validates the select conditions before updating the estimate of the gain imbalance and the estimate of the phase imbalance. The controller directs a compensator under select operating conditions such that validated dynamic estimates of the gain and phase imbalance or calibration data is applied to the quadrature signal paths. The controller disables the compensator and enables an estimator and a calculator when estimates are unavailable for the present operating conditions.
摘要翻译： 控制器和电路一起工作以实现选择性和动态调整以校正接收器的正交信号路径中的相位和增益不平衡。 在选择条件下，已经确定可以应用增益和相位不平衡的统计估计来调整接收机的正交信号路径中的信号。 控制器在更新增益不平衡的估计值和相位不平衡的估计值之前验证选择条件。 控制器在选择的操作条件下引导补偿器，使得增益和相位不平衡或校准数据的有效动态估计被应用于正交信号路径。 控制器禁用补偿器，并且当估计不能用于当前操作条件时，启用估计器和计算器。
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38.发明申请Circuit, Controller and Methods for Dynamic Estimation and Cancellation of Phase and Gain Imbalances in Quadrature Signal Paths of a Receiver 有权用于接收机正交信号路径中相位和增益不平衡的动态估计和消除的电路，控制器和方法公开(公告)号：US20100067622A1
公开(公告)日：2010-03-18
申请号：US12210229
申请日：2008-09-15
CPC分类号： H03D3/009 , H04L27/3863
摘要： A controller and a circuit work together to enable a selective and dynamic adjustment to correct phase and gain imbalances in quadrature signal paths of a receiver. Under select conditions, it has been determined that statistical estimates of gain and phase imbalance can be applied to adjust signals in the quadrature signal paths of a receiver. The controller validates the select conditions before updating the estimate of the gain imbalance and the estimate of the phase imbalance. The controller directs a compensator under select operating conditions such that validated dynamic estimates of the gain and phase imbalance or calibration data is applied to the quadrature signal paths. The controller disables the compensator and enables an estimator and a calculator when estimates are unavailable for the present operating conditions.
摘要翻译： 控制器和电路一起工作以实现选择性和动态调整以校正接收器的正交信号路径中的相位和增益不平衡。 在选择条件下，已经确定可以应用增益和相位不平衡的统计估计来调整接收机的正交信号路径中的信号。 控制器在更新增益不平衡的估计值和相位不平衡的估计值之前验证选择条件。 控制器在选择的操作条件下引导补偿器，使得增益和相位不平衡或校准数据的有效动态估计被应用于正交信号路径。 控制器禁用补偿器，并且当估计不能用于当前操作条件时，启用估计器和计算器。
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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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