公开(公告)号：WO2008106364A1

公开(公告)日：2008-09-04

申请号：PCT/US2008/054637

申请日：2008-02-22

Applicant: HARRIS CORPORATION

Inventor： MOFFATT, Christopher, D. ,  MARTIN, G. Patrick ,  TONTI, James

IPC: H03F1/32

CPC classification number: H03F1/3247 ,  H03F1/3294 ,  H03F3/24

Abstract: Predistorting an input signal prior to amplification in an RF power amplifier (206) includes isolating a plurality sub-band signals, each representing a portion of the input signal s(t). The method includes independently modifying an amplitude and a phase of each of the plurality of sub-band signals. The modification of the amplitude and/or phase is performed using a set of signal weighting parameters (weights) w and W, controlling linear and nonlinear modifications respectively, which are determined in an adaptive process by an adaptive controller (224). After modification, each of the sub-bands are summed together to obtain a predistorted input signal for an RF power amplifier (206).

Abstract translation: 在RF功率放大器（206）中放大之前预失真输入信号包括隔离多个子带信号，每个子带信号表示输入信号s（t）的一部分。 该方法包括独立地修改多个子带信号中的每一个的振幅和相位。 使用一组信号加权参数（权重）w和W来执行幅度和/或相位的修改，分别控制在自适应控制器（224）的自适应处理中确定的线性和非线性修改。 在修改之后，将每个子带相加在一起以获得用于RF功率放大器（206）的预失真输入信号。

公开(公告)号：WO2008036582A2

公开(公告)日：2008-03-27

申请号：PCT/US2007/078609

申请日：2007-09-17

Applicant: HARRIS CORPORATION

Inventor： MOFFATT, Christoper D. ,  TONTI, James ,  HEADLEY, Gary J.

CPC classification number: H04B17/318 ,  H04B1/56 ,  H04H60/51

Abstract: Method (500) and system (402) for actively detecting and determining a range of a remotely located radio receiver (100). The invention also provides a method and system to determine whether a remote receiver (100) is receiving a transmitted signal (418) and the minimum necessary transmitter power required to establish a communication link to the receiver (100). Finally, the invention also provides a method and system to resolve directional ambiguities due to multipath.

Abstract translation: 用于主动检测和确定远程定位的无线电接收器（100）的范围的方法（500）和系统（402）。 本发明还提供了一种确定远程接收器（100）是否正在接收发送信号（418）以及建立到接收器（100）的通信链路所需的最小必需发送器功率的方法和系统。 最后，本发明还提供了一种方法和系统来解决由于多路径导致的定向模糊。