公开(公告)号：US20140269970A1

公开(公告)日：2014-09-18

申请号：US13796236

申请日：2013-03-12

Applicant: Patrick PRATT ,  Peadar Antony FORBES

Inventor： Patrick PRATT ,  Peadar Antony FORBES

IPC: H04B1/04 ,  H04L5/14

CPC classification number: H04B1/0475 ,  H04B1/10 ,  H04B1/123 ,  H04B1/525 ,  H04L5/14 ,  H04L5/1423 ,  H04L5/1461

Abstract: An all digital model of nonlinear transmitter signal distortion in signals received at a receiver of a transmitter-receiver may be used to estimate distortion. The estimated distortion may then be cancelled from the received signals to improve signal quality of the received signal. The digital nonlinear model may be part of an estimator circuit that estimates nonlinear distortion terms by applying a formula or transformation to a digitized version of the signals transmitter at a transmitter of the transmitter-receiver. A mixer may be used to shift a frequency of the estimated nonlinear terms away from a transmitter frequency so that the nonlinear terms can later be subtracted from the incoming signal received at the receiver at a receiver frequency. Circuits and methods are provided.

Abstract translation: 可以使用在发射机 - 接收机的接收机处接收的信号中的非线性发射机信号失真的全数字模型来估计失真。 然后可以从接收的信号中消除估计的失真，以改善接收信号的信号质量。 数字非线性模型可以是通过在发射机 - 接收机的发射机处对信号发射机的数字化版本应用公式或变换来估计非线性失真项的估计器电路的一部分。 可以使用混频器将估计的非线性项的频率偏离发射机频率，使得可以在接收机频率处从接收机接收的输入信号中减去非线性项。 提供电路和方法。

公开(公告)号：US20140269852A1

公开(公告)日：2014-09-18

申请号：US13801130

申请日：2013-03-13

Applicant: Patrick PRATT ,  Peadar Antony FORBES ,  David J. McLAURIN ,  Martin McCORMICK

Inventor： Patrick PRATT ,  Peadar Antony FORBES ,  David J. McLAURIN ,  Martin McCORMICK

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H04B1/525

Abstract: Transmitter noise cancellation may be applied on a channel by channel basis to active channels of an incoming radio frequency signal received at a receiver. A noise cancellation filter may be provided for each active channel in a predetermined signal band. Applying noise cancellation on a per active channel basis instead of to the entire receive band may substantially reduce the filtering requirement and number of filter coefficients or taps to save power and reduce manufacturing costs. Channelized transmitter noise cancellers, multi transmitter-receiver cross coupling cancellers, and hybrid full signal band and channelized transmitter noise cancellers are also provided.

Abstract translation: 发射机噪声消除可以在逐个信道的基础上应用于在接收机处接收的输入射频信号的有效信道。 可以在预定信号频带中为每个有源信道提供噪声消除滤波器。 在每个活动通道基础上而不是整个接收频带上应用噪声消除可以大大降低滤波器要求和滤波器系数或抽头的数量以节省功率并降低制造成本。 还提供信道化发射机噪声消除器，多发射机 - 接收机交叉耦合消除器，以及混合全信号频带和信道化发射机噪声消除器。

公开(公告)号：US20150055732A1

公开(公告)日：2015-02-26

申请号：US13971298

申请日：2013-08-20

Applicant: Patrick PRATT

Inventor： Patrick PRATT

IPC: H04L25/08 ,  H04L25/03

CPC classification number: H04L25/08 ,  H03F1/0222 ,  H03F1/0294 ,  H03F3/19 ,  H04L25/03828

Abstract: Embodiments of the present invention may include power amplifier architectures and systems for use in wireless communication systems. The systems may include a first circuit path for receiving an input signal and decomposing the signal into two vector signals using an out-phasing generator, modifying the vectors based on predetermined value limit, amplifying the vectors using power amplifiers, and combining the vectors to provide an amplified output. The system may include a second circuit path for generating an estimate of an envelope of the input signal and using the envelope to modulate the voltage supplies of the power amplifiers when amplifying the vector signals. The system may also include a feedback path for sending information regarding the envelope of the input signal into the out-phasing generator, which may modify the vector signals in response thereto.

Abstract translation: 本发明的实施例可以包括用于无线通信系统的功率放大器架构和系统。 系统可以包括用于接收输入信号的第一电路路径，并且使用外相发生器将信号分解为两个矢量信号，基于预定值限制修改矢量，使用功率放大器来放大矢量，并且组合该矢量以提供 放大输出。 系统可以包括用于产生输入信号的包络的估计的第二电路路径，并且在放大矢量信号时使用包络来调制功率放大器的电压供应。 系统还可以包括用于将关于输入信号的包络的信息发送到定相发生器的反馈路径，其可以响应于此而修改向量信号。

公开(公告)号：US20140269858A1

公开(公告)日：2014-09-18

申请号：US14168881

申请日：2014-01-30

Applicant: Dzianis LUKASHEVICH ,  Patrick PRATT

Inventor： Dzianis LUKASHEVICH ,  Patrick PRATT

IPC: H04L25/08

CPC classification number: H04L25/08 ,  H04B1/525

Abstract: 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.

Abstract translation: 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：US20120015616A1

公开(公告)日：2012-01-19

申请号：US13246538

申请日：2011-09-27

Applicant: Patrick PRATT ,  Charles LeRoy SOBCHAK

Inventor： Patrick PRATT ,  Charles LeRoy SOBCHAK

IPC: H04B1/10

CPC classification number: H04B1/109 ,  H04B17/21

Abstract: A radio frequency transceiver (102), including a transmitter (104), a duplexer (108) and a direct-conversion receiver (106) including a mixer (140 and 141). An IIP2 calibration system (170), coupled to the transceiver, includes an IIP2 coefficient estimator (172) for calculating an estimate of second-order distortion intermodulation distortion, and an IIP2 controller (174) for adjusting an IIP2 tuning port of the mixer in the receiver to minimize second-order distortion intermodulation distortion in the receiver that may be caused by the receiver receiving a transmit RF signal leaking through the duplexer.

Abstract translation: 一种射频收发机（102），包括发射机（104），双工器（108）和包括混频器（140和141）的直接转换接收机（106）。 耦合到收发器的IIP2校准系统（170）包括用于计算二阶失真互调失真的估计的IIP2系数估计器（172）和用于调整混频器的IIP2调谐端口的IIP2控制器（174） 接收机，以最小化接收机中可能由接收机接收通过双工器泄露的发射RF信号引起的二阶失真互调失真。