公开(公告)号：US20130342271A1

公开(公告)日：2013-12-26

申请号：US14012849

申请日：2013-08-28

Applicant: Scintera Networks, Inc.

Inventor： Qian Yu

IPC: H03F1/32

CPC classification number: H03F1/3241 ,  H03F1/3247 ,  H03F2200/321 ,  H04L25/03343

Abstract: A system for implementing linearization of a radio frequency (RF) power amplifier (PA) in a base station, as well as various component circuitry for implementing said system. By means of a smart partitioning of the signal processing for predistortion between the analog domain and the digital domain, a more linear relationship between the digital input data and the output RF signal is achieved. Linearization of the PA's output signal is obtained using a mixed-signal apparatus. The digital baseband signal enters the RF signal source. The RF signal source comprises an in-band predistortion circuit, a micro-controller and digital modulator. The output of the digital modulator is an RF signal that enters the PA module. The PA module is composed of the PA and the RF power amplifier linearizer (RFPAL). The RFPAL comprises an RF predistortion circuit, and RF signal analyzer and a microcontroller. In addition, a backward data interface connects the RF signal source with the RFPAL.

Abstract translation: 一种用于实现基站中的射频（RF）功率放大器（PA）的线性化的系统，以及用于实现所述系统的各种组件电路。 通过对模拟域和数字域之间的预失真进行信号处理的智能划分，实现了数字输入数据与输出RF信号之间更为线性的关系。 使用混合信号装置获得PA输出信号的线性化。 数字基带信号进入RF信号源。 RF信号源包括带内预失真电路，微控制器和数字调制器。 数字调制器的输出是进入PA模块的RF信号。 PA模块由PA和RF功率放大器线性化（RFPAL）组成。 RFPAL包括RF预失真电路，RF信号分析器和微控制器。 此外，反向数据接口将RF信号源与RFPAL连接。

公开(公告)号：US09209841B2

公开(公告)日：2015-12-08

申请号：US14166422

申请日：2014-01-28

Applicant: Scintera Networks, Inc.

Inventor： Qian Yu ,  Yan Wang ,  Rajeev Krishnamoorthy

IPC: H04B1/62 ,  H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/02 ,  H03F1/3241 ,  H03F3/24 ,  H04B2001/0425 ,  H04B2001/0441 ,  H04B2001/045

Abstract: A pre-distortion circuit for a power amplifier may include: (a) a digital interface for receiving a complex-value digital baseband signal; (b) a mixed-signal pre-distortion circuit adaptively controlled by a set of parameter values, receiving the complex-value digital baseband signal to provide a pre-distorted signal for input to the power amplifier, the mixed-signal pre-distortion circuit may include: (i) digital pre-distortion circuit that transforms the complex-value digital baseband signal to a pre-distorted complex-value digital baseband signal by applying to the complex-value digital baseband signal a memory-less non-linear gain and a polynomial function based on the complex-value digital baseband signal one or more delayed copies of the complex-value digital baseband signal; and (ii) up-converter that converts the pre-distorted complex-value digital baseband signal to the pre-distorted signal; and (c) a signal analyzer receiving an output signal from the power amplifier to provide the parameter values from time to time to the mixed-signal pre-distortion circuit.

Abstract translation: 用于功率放大器的预失真电路可以包括：（a）用于接收复数值数字基带信号的数字接口; （b）由一组参数值自适应控制的混合信号预失真电路，接收复数值数字基带信号以提供用于输入到功率放大器的预失真信号，混合信号预失真电路 可以包括：（i）数字预失真电路，其通过向复数值数字基带信号施加无内存的非线性增益来将复数值数字基带信号转换为预失真的复数值数字基带信号，以及 基于复值数字基带信号的多值函数复数值数字基带信号的一个或多个延迟副本; 和（ii）将预失真复数值数字基带信号转换为预失真信号的上变频器; 以及（c）信号分析器，接收来自功率放大器的输出信号，以将参数值不时地提供给混合信号预失真电路。

公开(公告)号：US20140009229A1

公开(公告)日：2014-01-09

申请号：US14021478

申请日：2013-09-09

Applicant: Scintera Networks, Inc

Inventor： Qian Yu ,  Abhijit Shanbhag ,  Yan Wang

IPC: H03F1/32

CPC classification number: H03F1/3241 ,  H03F1/3247 ,  H04B17/13

Abstract: A mixed-signal adaptive integrated circuit may comprise a primary function circuit, a digitally controlled analog sub-system cooperatively connected with the primary function circuit, and an on-chip signal analyzer. The on-chip signal analyzer may be arranged to analyze RF signals. The signal analyzer may comprise at least one multiplexor for selecting selected RF signals for comparison and analysis, and may comprise a digital signal processor (DSP) for analyzing the selected RF signals and adjusting at least one operational parameter of the digital controlled analog sub-system responsive to the analysis.

Abstract translation: 混合信号自适应集成电路可以包括与主要功能电路协作连接的主要功能电路，数字控制的模拟子系统和片上信号分析器。 片上信号分析器可以被布置成分析RF信号。 信号分析器可以包括用于选择用于比较和分析的所选RF信号的至少一个多路复用器，并且可以包括用于分析所选择的RF信号并调整数字受控模拟子系统的至少一个操作参数的数字信号处理器（DSP） 响应分析。