公开(公告)号：US10686415B2

公开(公告)日：2020-06-16

申请号：US15856985

申请日：2017-12-28

申请人： Patrick Pratt ,  Rafael Celedon

发明人： Patrick Pratt ,  Rafael Celedon

IPC分类号： H03F1/26 ,  H03F3/21 ,  H03F1/32 ,  H03F3/193 ,  H03F3/19 ,  H03F1/02 ,  H03F3/60

摘要： Various examples are directed to a power amplifier circuit, comprising a digital predistortion circuit, first and second power amplifiers, and a bias feedback circuit. The digital predistortion circuit may be configured to generate a predistorted input signal based at least in part on an input signal. The first power amplifier may be configured to generate a first amplified signal based at least in part on the predistorted input signal. The second power amplifier may be configured to generate a second amplified signal based at least in part on the predistorted input signal. The bias feedback circuit may be configured to adjust at least one of a bias of the first power amplifier or a bias of the second power amplifier to align a first nonlinear behavior of the first power amplifier with a second nonlinear behavior of the second power amplifier.

公开(公告)号：US20180191314A1

公开(公告)日：2018-07-05

申请号：US15856985

申请日：2017-12-28

申请人： Patrick Pratt ,  Rafael Celedon

发明人： Patrick Pratt ,  Rafael Celedon

IPC分类号： H03F3/21 ,  H03F1/32 ,  H03F3/193

CPC分类号： H03F3/211 ,  H03F1/0233 ,  H03F1/0277 ,  H03F1/3247 ,  H03F1/3252 ,  H03F3/19 ,  H03F3/193 ,  H03F3/602 ,  H03F2201/3215 ,  H03F2201/3227

摘要： Various examples are directed to a power amplifier circuit, comprising a digital predistortion circuit, first and second power amplifiers, and a bias feedback circuit. The digital predistortion circuit may be configured to generate a predistorted input signal based at least in part on an input signal. The first power amplifier may be configured to generate a first amplified signal based at least in part on the predistorted input signal. The second power amplifier may be configured to generate a second amplified signal based at least in part on the predistorted input signal. The bias feedback circuit may be configured to adjust at least one of a bias of the first power amplifier or a bias of the second power amplifier to align a first nonlinear behavior of the first power amplifier with a second nonlinear behavior of the second power amplifier.

公开(公告)号：US09083582B2

公开(公告)日：2015-07-14

申请号：US14168881

申请日：2014-01-30

申请人： Dzianis Lukashevich ,  Patrick Pratt

发明人： Dzianis Lukashevich ,  Patrick Pratt

IPC分类号： H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04L1/00 ,  H04L25/08 ,  H04B1/525

CPC分类号： H04L25/08 ,  H04B1/525

摘要： In a multi transmitter-receiver system, transmitter noise cancellation may be applied selectively for certain transmitters by exploiting asymmetries of the system. Hence, observation receiver(s) numbering less than the number of transmitters may be provided saving space and cost. Each observation receiver may selectively couple to a transmitter path and estimate the leakage noise from that transmitter. Based on the estimated leakage noise, noise cancellation may be applied to corresponding receiver path(s). Selection of the transmitters for leakage estimation may be based on system conditions at that time, which may be known to the system or may be estimated dynamically.

摘要翻译： 在多发射机 - 接收机系统中，通过利用系统的不对称性，可以选择性地对某些发射机应用发射机噪声消除。 因此，可以提供小于发射机数量的观测接收机节省空间和成本。 每个观测接收机可以选择性地耦合到发射机路径并估计来自该发射机的泄漏噪声。 基于估计的泄漏噪声，噪声消除可以应用于相应的接收机路径。 用于泄漏估计的发射机的选择可以基于当时的系统条件，其可以是系统可知的或者可以动态地估计。

公开(公告)号：US08976849B2

公开(公告)日：2015-03-10

申请号：US12523934

申请日：2007-01-22

申请人： Patrick Pratt ,  Hari Thirumoorthy ,  Conor O'Keeffe

发明人： Patrick Pratt ,  Hari Thirumoorthy ,  Conor O'Keeffe

IPC分类号： H04L27/14 ,  H03D3/00 ,  H04L27/00

CPC分类号： H03D3/009 ,  H04L27/0014 ,  H04L2027/0016

摘要： A calibration signal generator for use in a balancing circuit calibration device in a radio receiver, the calibration signal generator comprising: a means of amplifying a clocking signal from a clocking signal generator to provide a first calibration signal; a means of generating a second calibration signal from the clocking signal, the first and second calibration signals being transmissible to a one or more mixing circuits in the balancing circuit calibration device; and a means synchronizing the operation of other circuit elements in the balancing circuit calibration device with the clocking signal; characterized in that the clocking signal generator is present in the radio receiver and used therein for other functions.

摘要翻译： 一种用于无线电接收机中的平衡电路校准装置的校准信号发生器，所述校准信号发生器包括：放大来自时钟信号发生器的时钟信号以提供第一校准信号的装置; 从所述时钟信号产生第二校准信号的装置，所述第一和第二校准信号可传输到所述平衡电路校准装置中的一个或多个混合电路; 以及将平衡电路校准装置中的其他电路元件的操作与时钟信号同步的装置; 其特征在于，时钟信号发生器存在于无线电接收机中并在其中用于其它功能。

公开(公告)号：US08942655B2

公开(公告)日：2015-01-27

申请号：US12600687

申请日：2007-05-31

申请人： Norman Beamish ,  Conor O'Keeffe ,  Patrick Pratt

发明人： Norman Beamish ,  Conor O'Keeffe ,  Patrick Pratt

IPC分类号： H04B17/00 ,  H04B1/10 ,  H04B1/26 ,  H04B1/16 ,  H03D3/00 ,  H04B1/30 ,  H04L27/00

CPC分类号： H03D3/009 ,  H04B1/30 ,  H04L27/0014

摘要： An integrated circuit comprising processing logic for operably coupling to radio frequency (RF) receiver circuitry arranged to receive a wireless network signal. The receiver circuitry generates in-phase and quadrature digital baseband representations of the wireless network signal. The processing logic determines quadrature (I/Q) imbalance of the RF receiver circuitry based on the in-phase and quadrature digital baseband representations of the wireless network signal.

摘要翻译： 一种集成电路，包括用于可操作地耦合到布置成接收无线网络信号的射频（RF）接收机电路的处理逻辑。 接收器电路产生无线网络信号的同相和正交数字基带表示。 处理逻辑基于无线网络信号的同相和正交数字基带表示来确定RF接收器电路的正交（I / Q）不平衡。

公开(公告)号：US08433263B2

公开(公告)日：2013-04-30

申请号：US13120519

申请日：2008-09-24

申请人： Patrick Pratt ,  Jau Horng Chen ,  George Norris

发明人： Patrick Pratt ,  Jau Horng Chen ,  George Norris

IPC分类号： H04B1/04 ,  H01Q11/12

CPC分类号： H03F1/3247

摘要： A wireless communication unit comprises a transmitter having a forward path comprising a power amplifier, PA, and a feedback path arranged to feed back a portion of a signal output from the PA to a point in the forward path prior to the PA. The forward path and feedback path form a constant gain tracking (CGT) loop. The feedback path comprises an adaptive predistortion logic module located outside of the CGT loop and arranged to form an APD loop with the forward path and feedback path. The CGT loop comprises a controller logic module arranged to determine a gain offset of a signal routed through the forward path and feedback path and in response thereto set a drive level of the PA.

摘要翻译： 无线通信单元包括具有正向路径的发射机，该前向路径包括功率放大器PA和反馈路径，所述反馈路径被布置为将从PA输出的信号的一部分反馈到PA之前的前向路径中的一个点。 正向路径和反馈路径形成恒定增益跟踪（CGT）循环。 反馈路径包括位于CGT环路外部的自适应预失真逻辑模块，并被布置成与前向路径和反馈路径形成APD环路。 CGT循环包括控制器逻辑模块，其被布置为确定通过前向路径和反馈路径路由的信号的增益偏移，并响应于此设置PA的驱动电平。

公开(公告)号：US08369804B2

公开(公告)日：2013-02-05

申请号：US13060549

申请日：2008-08-29

申请人： Michael O'Brien ,  Denis Dineen ,  Patrick Pratt

发明人： Michael O'Brien ,  Denis Dineen ,  Patrick Pratt

IPC分类号： H04B1/04 ,  H04B7/00

CPC分类号： H04W52/52 ,  H03F1/0261 ,  H03F3/24

摘要： A wireless communication unit comprises a transmitter comprising a power amplifier, an inner feedback power control loop having a power control logic module comprising loop priming logic module operably coupled to the power amplifier, and a switchable outer digital loop comprising switchable logic module. The loop priming logic module is arranged to set a power reference value for controlling the power amplifier prior to a ramping operation of the power amplifier and the switchable logic module switching the switchable outer digital loop on or off, thereby restricting adverse transient behavior of the power amplifier.

摘要翻译： 无线通信单元包括发射机，其包括功率放大器，具有功率控制逻辑模块的内部反馈功率控制环路，该功率控制逻辑模块包括可操作地耦合到功率放大器的环路启动逻辑模块，以及包括可切换逻辑模块的可切换的外部数字环路。 环路启动逻辑模块被布置成设置用于在功率放大器的斜坡运行之前控制功率放大器的功率参考值，并且可切换逻辑模块切换可切换的外部数字环路的开启或关闭，从而限制功率的不利的瞬态特性 放大器

公开(公告)号：US20110136452A1

公开(公告)日：2011-06-09

申请号：US13058025

申请日：2008-08-20

申请人： Patrick Pratt ,  George Norris

发明人： Patrick Pratt ,  George Norris

IPC分类号： H04B1/04 ,  H04W52/04

CPC分类号： H03F1/3241 ,  H03F1/34

摘要： A wireless communication unit comprising a transmitter having a power amplifier, a controller logic module arranged to control a power control value of the power amplifier and a closed loop control system operably coupled to the power amplifier and arranged to monitor a level of peak PA compression, wherein in response to the identified level of peak PA compression the controller logic module is arranged to automatically adjust a power amplifier power control value of the PA to obtain a predetermined level of peak PA compression.

摘要翻译： 一种无线通信单元，包括具有功率放大器的发射机，被配置为控制功率放大器的功率控制值的控制器逻辑模块和可操作地耦合到功率放大器并被布置成监视峰值PA压缩水平的闭环控制系统， 其中响应于所识别的峰值PA压缩水平，控制器逻辑模块被布置成自动调整PA的功率放大器功率控制值以获得预定水平的峰值PA压缩。

公开(公告)号：US07902892B2

公开(公告)日：2011-03-08

申请号：US12440663

申请日：2006-09-11

申请人： Patrick Pratt ,  Denis Dineen ,  Michael O'Brien

发明人： Patrick Pratt ,  Denis Dineen ,  Michael O'Brien

IPC分类号： H03K5/12

CPC分类号： H03G3/3047 ,  H03F1/0261 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/207

摘要： A control loop has a control slope associated therewith. The control loop is provided to control a unit under control. A method of regulating the control slope comprises the step of measuring the control slope of the control loop and modifying a parameter associated with the unit under control in order to maintain the control slope within a desired range. Lock of the control loop is therefore maintained.

摘要翻译： 控制回路具有与其相关联的控制斜率。 提供控制回路以控制受控的单元。 调节控制斜率的方法包括测量控制回路的控制斜率并修改与控制单元相关联的参数以便将控制斜率保持在所需范围内的步骤。 因此保持控制回路的锁定。

公开(公告)号：US20090289678A1

公开(公告)日：2009-11-26

申请号：US12440663

申请日：2006-09-11

申请人： Patrick Pratt ,  Denis Dineen ,  Michael O'Brien

发明人： Patrick Pratt ,  Denis Dineen ,  Michael O'Brien

IPC分类号： H03K5/12

CPC分类号： H03G3/3047 ,  H03F1/0261 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/207

摘要： A control loop has a control slope associated therewith. The control loop is provided to control a unit under control. A method of regulating the control slope comprises the step of measuring the control slope of the control loop and modifying a parameter associated with the unit under control in order to maintain the control slope within a desired range. Lock of the control loop is therefore maintained.

摘要翻译： 控制回路具有与其相关联的控制斜率。 提供控制回路以控制受控的单元。 调节控制斜率的方法包括测量控制回路的控制斜率并修改与控制单元相关联的参数以便将控制斜率保持在所需范围内的步骤。 因此保持控制回路的锁定。