公开(公告)号：US20040192233A1

公开(公告)日：2004-09-30

申请号：US10125334

申请日：2002-04-18

Applicant: Motorola, Inc.

Inventor： James E. Mitzlaff

IPC: H01Q011/12

CPC classification number: H04B7/0613 ,  H03F1/32 ,  H03F1/526 ,  H03F2200/294 ,  H04B7/10 ,  Y02D70/1224 ,  Y02D70/442 ,  Y02D70/444

Abstract: A redundant linear power amplifier (LPA) system is provided for minimizing the loss of power output during malfunction conditions. The redundant LPA system includes a transmitter (102) with redundant LPA units (110, 112) for providing spatial combining redundancy and transmitter polarization diversity. Each LPA unit (110, 112) receives an input signal. The output from one of the LPA units (110) is connected to an antenna (120) and the output from the second LPA unit (112) is phase shifted (117) and then connected to a second antenna (122). Alternatively, the outputs from the LPA units (110, 112) are input into a quadrature hybrid (126) and the output (128) from a first port (131) of the quadrature hybrid (126) is connected to the first antenna (120) and the output (130) from a second quadrature hybrid port (133) is phase shifted (117) and connected to the second antenna (122).

Abstract translation: 提供了冗余线性功率放大器（LPA）系统，用于在故障状态下最大限度地减少功率输出的损耗。 冗余LPA系统包括具有冗余LPA单元（110,112）的发射机（102），用于提供空间组合冗余和发射机极化分集。 每个LPA单元（110,112）接收输入信号。 来自一个LPA单元（110）的输出连接到天线（120），并且来自第二LPA单元（112）的输出相移（117），然后连接到第二天线（122）。 或者，来自LPA单元（110,112）的输出被输入到正交混合（126）中，并且来自正交混合（126）的第一端口（131）的输出（128）连接到第一天线（120） ）和来自第二正交混合端口（133）的输出（130）被相移（117）并连接到第二天线（122）。

公开(公告)号：US20020094795A1

公开(公告)日：2002-07-18

申请号：US09765747

申请日：2001-01-18

Applicant: MOTOROLA, INC.

Inventor： James E. Mitzlaff

IPC: H04B007/00

CPC classification number: H03F1/0211 ,  H03F1/0244 ,  H03F1/32

Abstract: An apparatus (150), system (100) and method (400-440) are illustrated for power amplification of an input signal to produce a substantially linear amplified output signal, for broadband wireless applications such as 3G cellular and broadband CDMA systems, without causing significant intermodulation distortion or spectral growth. The preferred system (100) embodiment includes an envelope detector (110) to determine an envelope detector voltage from the input signal; a tracking power supply (120) to determine a supply voltage, preferably as a substantially quantized replica of the envelope detector voltage; an input signal conditioner (150) to determine, in response to the supply voltage, a corresponding phase adjustment and a corresponding gain adjustment, and to modify the input signal using the corresponding phase adjustment and the corresponding gain adjustment to produce a conditioned input signal for power amplification. The preferred system (100) embodiment further includes a power amplifier which operates using the supply voltage, and which amplifies the conditioned input signal to produce the amplified output signal. In the preferred embodiment, the corresponding phase adjustment and a corresponding gain adjustment are separately and independently determined from piecewise linear mappings of a phase response and an amplitude response, respectively, of the power amplifier to a range of variation of the supply voltage.

Abstract translation: 示出了用于输入信号的功率放大的装置（150），系统（100）和方法（400-440），以产生用于诸如3G蜂窝和宽带CDMA系统之类的宽带无线应用的基本上线性的放大输出信号，而不引起 显着的互调失真或光谱增长。 优选的系统（100）实施例包括一个包络检测器（110），用于根据输入信号确定包络检测器电压; 跟踪电源（120），用于确定电源电压，优选地作为包络检测器电压的基本上量化的副本; 输入信号调节器（150），用于响应于电源电压确定相应的相位调整和相应的增益调整，并且使用相应的相位调整和相应的增益调整修改输入信号，以产生经调节的输入信号， 功率放大。 优选的系统（100）实施例还包括功率放大器，其使用电源电压进行操作，并且其放大经调节的输入信号以产生放大的输出信号。 在优选实施例中，相应的相位调整和相应的增益调整是分别地和独立地确定的功率放大器的相位响应和振幅响应的分段线性映射到电源电压的变化范围。