公开(公告)号：US09768731B2

公开(公告)日：2017-09-19

申请号：US14968045

申请日：2015-12-14

Applicant: Eta Devices, Inc.

Inventor： David J. Perreault ,  Joel L. Dawson ,  Wei Li ,  Yevgeniy A. Tkachenko ,  Balaji Lakshminarayanan ,  John Hoversten

IPC: H04B1/04 ,  H03F1/02 ,  H03F3/68 ,  H03F3/19 ,  H03F3/21 ,  H03G3/30 ,  H03F3/24 ,  H03G3/00

CPC classification number: H03F1/0211 ,  H03F1/02 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/21 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/511 ,  H03F2200/555 ,  H03F2203/21106 ,  H03G3/004 ,  H03G3/3042 ,  H04B1/0475 ,  H04B1/0483 ,  H04B2001/0408 ,  H04B2001/045

Abstract: Described embodiments provide a radio frequency (RF) amplifier system having at least one amplifier. The at least one amplifier includes an RF input port, an RF output port and a drain bias port. At least one voltage modulator is coupled to the bias port of the least one amplifier to provide a bias voltage. The bias voltage is selected by switching among a plurality of discrete voltages. At least one filter circuit is coupled between the at least one voltage modulator and the at least one amplifier. The at least one filter circuit controls spectral components resultant from transitions in the bias voltage when switching among the plurality of discrete voltages. A controller dynamically adapts at least one setting of the at least one voltage modulator by using multi-pulse transitions when switching among the plurality of discrete voltages for a first operating condition of the RF amplifier.

公开(公告)号：US09979421B2

公开(公告)日：2018-05-22

申请号：US15058742

申请日：2016-03-02

Applicant: Eta Devices, Inc.

Inventor： Mattias Astrom ,  Mark A. Briffa ,  Joel L. Dawson ,  John Hoversten ,  Per-Ludvig B. Normark ,  Yevgeniy A. Tkachenko

IPC: H04B1/04 ,  H04B17/11 ,  H04B17/10

CPC classification number: H04B1/0475 ,  H03F1/3241 ,  H04B17/104 ,  H04B17/11 ,  H04B2001/0425

Abstract: A radio frequency (RF) transmit system includes an observation receiver coupled to receive a portion of an RF signal propagating along an RF transmit signal path and a digital pre-distortion (DPD) system coupled to the observation receiver and configured to receive one or more signals from the observation receiver and in response thereto, to adapt one or more DPD values of the RF transmit system over a period of time and a range of operating conditions of the RF transmit system and to provide one or more adapted DPD values to said controller.

公开(公告)号：US20160099686A1

公开(公告)日：2016-04-07

申请号：US14968045

申请日：2015-12-14

Applicant: Eta Devices, Inc.

Inventor： David J. Perreault ,  Joel L. Dawson ,  Wei Li ,  Yevgeniy A. Tkachenko ,  Balaji Lakshminarayanan ,  John Hoversten

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/19

CPC classification number: H03F1/0211 ,  H03F1/02 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/21 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/511 ,  H03F2200/555 ,  H03F2203/21106 ,  H03G3/004 ,  H03G3/3042 ,  H04B1/0475 ,  H04B1/0483 ,  H04B2001/0408 ,  H04B2001/045

Abstract: Described embodiments provide a radio frequency (RF) amplifier system having at least one amplifier. The at least one amplifier includes an RF input port, an RF output port and a drain bias port. At least one voltage modulator is coupled to the bias port of the least one amplifier to provide a bias voltage. The bias voltage is selected by switching among a plurality of discrete voltages. At least one filter circuit is coupled between the at least one voltage modulator and the at least one amplifier. The at least one filter circuit controls spectral components resultant from transitions in the bias voltage when switching among the plurality of discrete voltages. A controller dynamically adapts at least one setting of the at least one voltage modulator by using multi-pulse transitions when switching among the plurality of discrete voltages for a first operating condition of the RF amplifier.

Abstract translation: 所描述的实施例提供了具有至少一个放大器的射频（RF）放大器系统。 所述至少一个放大器包括RF输入端口，RF输出端口和漏极偏置端口。 至少一个电压调制器耦合到至少一个放大器的偏置端口以提供偏置电压。 通过在多个离散电压之间切换来选择偏置电压。 至少一个滤波电路耦合在至少一个电压调制器和至少一个放大器之间。 所述至少一个滤波器电路控制在所述多个离散电压之间切换时由偏置电压的转变产生的频谱分量。 当在RF放大器的第一工作状态之间切换多个离散电压时，控制器通过使用多脉冲跃迁来动态地适配至少一个电压调制器的至少一个设置。

公开(公告)号：US20160261295A1

公开(公告)日：2016-09-08

申请号：US15058742

申请日：2016-03-02

Applicant: Eta Devices, Inc.

Inventor： Mattias Astrom ,  Mark A. Briffa ,  Joel L. Dawson ,  John Hoversten ,  Per-Ludvig B. Normark ,  Yevgeniy A. Tkachenko

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/3241 ,  H04B17/104 ,  H04B17/11 ,  H04B2001/0425

Abstract: A radio frequency (RF) transmit system includes an observation receiver coupled to receive a portion of an RF signal propagating along an RF transmit signal path and a digital pre-distortion (DPD) system coupled to the observation receiver and configured to receive one or more signals from the observation receiver and in response thereto, to adapt one or more DPD values of the RF transmit system over a period of time and a range of operating conditions of the RF transmit system and to provide one or more adapted DPD values to said controller.

Abstract translation: 射频（RF）发射系统包括耦合以接收沿着RF发射信号路径传播的RF信号的一部分的观测接收机和耦合到观察接收机的数字预失真（DPD）系统，并且被配置为接收一个或多个 来自观察接收机的信号，并且响应于此，在RF发射系统的一段时间和操作条件的范围内调整一个或多个DPD值，并且向所述控制器提供一个或多个适配的DPD值 。