公开(公告)号：US20160261240A1

公开(公告)日：2016-09-08

申请号：US15156832

申请日：2016-05-17

Applicant: Aviat U.S., Inc.

Inventor： Frank Matsumoto ,  Youming Qin ,  David C.M. Pham ,  Jayesh Nath ,  Ying Shen

IPC: H03F1/32 ,  H04B1/04 ,  H03F3/21 ,  H03F1/02 ,  H03F3/19

CPC classification number: H03F1/32 ,  H03F1/0205 ,  H03F1/0211 ,  H03F1/3247 ,  H03F3/19 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/129 ,  H03F2200/207 ,  H03F2200/451 ,  H04B1/04 ,  H04B2001/0425

Abstract: An exemplary system comprises a linearizer module, a first upconverter module, a power amplifier module, a signal sampler module, and a downconverter module. The linearizer module may be configured to receive a first intermediate frequency signal and to adjust the first intermediate frequency signal based on a reference signal and a signal based on a second intermediate frequency signal. The first upconverter module may be configured to receive and up-convert a signal based on the adjusted first intermediate frequency signal to a radio frequency signal. The power amplifier module may be configured to receive and amplify a power of a signal based on the radio frequency signal. The signal sampler module may be configured to sample a signal based on the amplified radio frequency signal. The downconverter module may be configured to receive and down-convert a signal based on the sampled radio frequency signal to the second intermediate frequency signal.

Abstract translation: 示例性系统包括线性化模块，第一上变频器模块，功率放大器模块，信号采样器模块和下变频器模块。 线性化模块可以被配置为接收第一中频信号并且基于参考信号和基于第二中频信号的信号来调整第一中频信号。 第一上变频器模块可以被配置为基于经调整的第一中频信号将信号接收和上变频到射频信号。 功率放大器模块可以被配置为基于射频信号来接收和放大信号的功率。 信号采样器模块可以被配置为基于放大的射频信号对信号进行采样。 下变频器模块可以被配置为基于所采样的射频信号将信号接收和下变频到第二中频信号。

公开(公告)号：US20180191311A1

公开(公告)日：2018-07-05

申请号：US15907218

申请日：2018-02-27

Applicant: Aviat U.S., Inc.

Inventor： Frank Matsumoto ,  Youming Qin ,  David C.M. Pham ,  Jayesh Nath ,  Ying Shen

IPC: H03F1/32 ,  H04B1/04 ,  H03F1/02 ,  H03F3/19 ,  H03F3/21 ,  H03F3/24

CPC classification number: H03F1/32 ,  H03F1/0205 ,  H03F1/0211 ,  H03F1/3247 ,  H03F3/19 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/129 ,  H03F2200/207 ,  H03F2200/451 ,  H04B1/04 ,  H04B2001/0425

Abstract: An exemplary system comprises a linearizer module, a first upconverter module, a power amplifier module, a signal sampler module, and a downconverter module. The linearizer module may be configured to receive a first intermediate frequency signal and to adjust the first intermediate frequency signal based on a reference signal and a signal based on a second intermediate frequency signal. The first upconverter module may be configured to receive and up-convert a signal based on the adjusted first intermediate frequency signal to a radio frequency signal. The power amplifier module may be configured to receive and amplify a power of a signal based on the radio frequency signal. The signal sampler module may be configured to sample a signal based on the amplified radio frequency signal. The downconverter module may be configured to receive and down-convert a signal based on the sampled radio frequency signal to the second intermediate frequency signal.

公开(公告)号：US20150236732A1

公开(公告)日：2015-08-20

申请号：US14704468

申请日：2015-05-05

Applicant: Aviat U.S., Inc.

Inventor： Jayesh Nath ,  Ying Shen ,  Frank Matsumoto ,  Youming Qin ,  David C.M. Pham

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/345 ,  H03F3/19 ,  H03F3/245 ,  H03F3/60 ,  H03F2200/204 ,  H03F2200/207 ,  H03F2200/423 ,  H04B2001/0425

Abstract: Various embodiments provide for systems and methods for increased linear output power of a transmitter. An exemplary wireless communications system for transmitting an input signal comprises a predistorter module, a GaN power amplifier, a coupler, and an antenna. The predistorter module is configured to detect existing distortion by comparing the input signal to a feedback signal and generate a correction signal. The predistorter may adaptively adjust its operation to minimize the existing distortion due to GaN power amplifier nonlinear characteristics. The result is that the GaN power amplifier may send a power signal of improved linearity to the antenna. The coupler is configured to sample the amplified signal from the GaN power amplifier to generate the feedback signal. The antenna is configured to transmit the amplified signal.

Abstract translation: 各种实施例提供了用于增加发射机的线性输出功率的系统和方法。 用于传输输入信号的示例性无线通信系统包括预失真器模块，GaN功率放大器，耦合器和天线。 预失真器模块被配置为通过将输入信号与反馈信号进行比较来检测现有失真并产生校正信号。 预失真器可以自适应地调整其操作，以使由于GaN功率放大器非线性特性导致的现有失真最小化。 结果是GaN功率放大器可以向天线发送具有改进的线性度的功率信号。 耦合器被配置为对来自GaN功率放大器的放大信号进行采样以产生反馈信号。 天线被配置为发送放大的信号。