公开(公告)号：US07606544B2

公开(公告)日：2009-10-20

申请号：US11023691

申请日：2004-12-28

Applicant: Andreas G. Hennig

Inventor： Andreas G. Hennig

IPC: H04B7/00

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/706

Abstract: A receiver for processing a signal comprises a first amplifier circuit and a second amplifier circuit. The first amplifier circuit is operated in association with a first gain profile. The second amplifier circuit is operated in association with a second gain profile. The receiver further comprises a gain control circuit that determines a quality indicator associated with a modulated signal. The gain control circuit adjusts the first gain profile and the second gain profile based at least in part upon the determined quality indicator.

Abstract translation: 用于处理信号的接收器包括第一放大器电路和第二放大器电路。 第一放大器电路与第一增益曲线相关联地操作。 第二放大器电路与第二增益曲线相关联地操作。 接收机还包括增益控制电路，其确定与调制信号相关联的质量指示符。 增益控制电路至少部分地基于所确定的质量指示符来调整第一增益曲线和第二增益曲线。

公开(公告)号：US20060141965A1

公开(公告)日：2006-06-29

申请号：US11023691

申请日：2004-12-28

Applicant: Andreas Hennig

Inventor： Andreas Hennig

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/706

Abstract: A receiver for processing a signal comprises a first amplifier circuit and a second amplifier circuit. The first amplifier circuit is operated in association with a first gain profile. The second amplifier circuit is operated in association with a second gain profile. The receiver further comprises a gain control circuit that determines a quality indicator associated with a modulated signal. The gain control circuit adjusts the first gain profile and the second gain profile based at least in part upon the determined quality indicator.

公开(公告)号：US08041322B2

公开(公告)日：2011-10-18

申请号：US12359358

申请日：2009-01-26

Applicant: Hiroji Akahori

Inventor： Hiroji Akahori

IPC: H04B1/06

CPC classification number: H03G3/3068 ,  H03G2201/204 ,  H03G2201/206 ,  H03G2201/305 ,  H03G2201/307

Abstract: A radio-frequency receiver includes an RF amplification circuit which amplifies a received RF signal and generates an amplified RF signal, a mixing circuit which converts the amplified RF signal into an intermediate-frequency signal, an IF amplification circuit which generates an amplified IF signal, a first level detection circuit which detects a level of the amplified RF signal, a second level detection circuit which detects a level of the IF signal, a third level detection circuit which detects a level of the amplified IF signal, a RF reference level generation circuit which generates an RF reference level based on one of respective detection signal levels of the first and second level detection circuits, and an RF gain control circuits which controls an amplification gain of the RF amplification circuit so that a detection signal level of the third level detection circuit becomes equal to the RF reference level.

Abstract translation: 射频接收机包括放大接收的RF信号并产生放大的RF信号的RF放大电路，将放大的RF信号转换为中频信号的混合电路，产生放大的IF信号的IF放大电路， 检测放大的RF信号的电平的第一电平检测电路，检测IF信号的电平的第二电平检测电路，检测放大的IF信号的电平的第三电平检测电路，RF基准电平生成电路 其基于第一和第二电平检测电路的相应检测信号电平之一产生RF参考电平，以及RF增益控制电路，其控制RF放大电路的放大增益，使得第三电平检测的检测信号电平 电路变得等于RF参考电平。

公开(公告)号：US20090209219A1

公开(公告)日：2009-08-20

申请号：US12359358

申请日：2009-01-26

Applicant: Hiroji Akahori

Inventor： Hiroji Akahori

IPC: H04B1/06

CPC classification number: H03G3/3068 ,  H03G2201/204 ,  H03G2201/206 ,  H03G2201/305 ,  H03G2201/307

Abstract: A radio-frequency receiver includes an RF amplification circuit which amplifies a received RF signal and generates an amplified RF signal, a mixing circuit which converts the amplified RF signal into an intermediate-frequency signal, an IF amplification circuit which generates an amplified IF signal, a first level detection circuit which detects a level of the amplified RF signal, a second level detection circuit which detects a level of the IF signal, a third level detection circuit which detects a level of the amplified IF signal, a RF reference level generation circuit which generates an RF reference level based on one of respective detection signal levels of the first and second level detection circuits, and an RF gain control circuits which controls an amplification gain of the RF amplification circuit so that a detection signal level of the third level detection circuit becomes equal to the RF reference level.

Abstract translation: 射频接收机包括放大接收的RF信号并产生放大的RF信号的RF放大电路，将放大的RF信号转换为中频信号的混合电路，产生放大的IF信号的IF放大电路， 检测放大的RF信号的电平的第一电平检测电路，检测IF信号的电平的第二电平检测电路，检测放大的IF信号的电平的第三电平检测电路，RF基准电平生成电路 其基于第一和第二电平检测电路的相应检测信号电平之一产生RF参考电平，以及RF增益控制电路，其控制RF放大电路的放大增益，使得第三电平检测的检测信号电平 电路变得等于RF参考电平。

公开(公告)号：US07127223B2

公开(公告)日：2006-10-24

申请号：US11189941

申请日：2005-07-26

Applicant: Hang Jin ,  John Grabner ,  Jun Huang ,  Daniel Wee Teck Ho

Inventor： Hang Jin ,  John Grabner ,  Jun Huang ,  Daniel Wee Teck Ho

IPC: H04B1/06

CPC classification number: H03G3/3052 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/706

Abstract: The present invention discloses a proactive gain control system for a communications receiver. The proactive gain control system includes a variable gain module for outputting an output signal in response to an input signal. A detector detects the output signal and outputs a detection signal representing a signal strength of the output signal. A traffic monitor monitors the output signal and outputs a traffic profile signal indicating that a traffic profile for the input signal will change. A gain computing module outputs a gain adjustment value in response to the detection signal and the traffic profile signal. A gain control module outputs a gain control signal to the variable gain module, which determines a gain between the input and output signals, in response to the gain adjustment value.

Abstract translation: 本发明公开了一种用于通信接收机的主动增益控制系统。 主动增益控制系统包括用于响应于输入信号输出输出信号的可变增益模块。 检测器检测输出信号并输出​​表示输出信号的信号强度的检测信号。 流量监视器监视输出信号并输出​​指示用于输入信号的流量曲线将改变的流量分布信号。 增益计算模块响应于检测信号和流量分布信号输出增益调整值。 增益控制模块响应于增益调整值，向可变增益模块输出增益控制信号，该可变增益模块确定输入和输出信号之间的增益。

公开(公告)号：US20050221779A1

公开(公告)日：2005-10-06

申请号：US11093416

申请日：2005-03-30

Applicant: Taiwa Okanobu

Inventor： Taiwa Okanobu

IPC: H03G3/20 ,  H03G1/00 ,  H03G3/30 ,  H03G7/00 ,  H04B1/06 ,  H04B1/10 ,  H04B1/16 ,  H04B7/00 ,  H04B17/40 ,  H04B17/02

CPC classification number: H03G3/3068 ,  H03G1/0023 ,  H03G1/0088 ,  H03G7/001 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/506

Abstract: An automatic gain control (AGC) circuit includes a number of attenuation circuits connected in series relative to a reception signal, a of variable gain amplifiers to which the reception signal and each output signal from the attenuation circuits are fed, respectively, a signal deriving circuit connected to output terminals of the variable gain amplifiers for deriving a level-controlled output signal, and a control current generating circuit for generating a control current having a predetermined characteristic out of first and second AGC voltages, wherein the control current outputted from the control current generating circuit is supplied to the variable gain amplifiers as a control signal for switching an operation thereof and for controlling a gain thereof, and a feedback control current corresponding to the control current is performed by the control current generating circuit.

Abstract translation: 自动增益控制（AGC）电路包括相对于接收信号串联连接的多个衰减电路，分别馈送有来自衰减电路的接收信号和每个输出信号的可变增益放大器的信号导出电路 连接到可变增益放大器的输出端，用于导出电平控制的输出信号;以及控制电流产生电路，用于产生具有从第一和第二AGC电压起的预定特性的控制电流，其中从控制电流输出的控制电流 发电电路被提供给可变增益放大器作为用于切换其操作并用于控制其增益的控制信号，并且由控制电流产生电路执行与控制电流相对应的反馈控制电流。

公开(公告)号：US20190131949A1

公开(公告)日：2019-05-02

申请号：US16130435

申请日：2018-09-13

Applicant: NXP B.V.

Inventor： Sebastien Robert ,  Fabian Rivière ,  Franck Bisson ,  Christophe Olivier Mertens ,  Samuel Becqué

IPC: H03G3/30 ,  H04B1/18 ,  H04B1/10

CPC classification number: H03G3/3068 ,  H03G2201/204 ,  H03G2201/206 ,  H04B1/109 ,  H04B1/18

Abstract: A receiver includes at least a first amplifier configured to receive a received signal and provide a first amplified signal based thereon, a mixer configured to receive the first amplified signal and provide an intermediate frequency signal based thereon and a second amplifier configured to receive the intermediate frequency signal and provide a second amplified signal based thereon. An automatic gain controller for the receiver is configured to, based on a first overload signal indicative of a first frequency range of the first amplified signal having one or more frequency components exceeding a first maximum signal power threshold and a second overload signal indicative of a second frequency range, narrower than the first, of the second amplified signal having one or more frequency components exceeding a second maximum signal power threshold, provide for control of a respective gain of one or both of the first amplifier and the second amplifier.

公开(公告)号：US20060205372A1

公开(公告)日：2006-09-14

申请号：US10542466

申请日：2004-01-20

Applicant: Aaron Bouillet ,  Matthew Mayer

Inventor： Aaron Bouillet ,  Matthew Mayer

IPC: H04B7/00 ,  H04B1/06

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307

Abstract: A method and apparatus for generating the adaptive gain control signals in a communications receiver is disclosed. The present invention can be used with existing two stage gain architectures, and overcomes many undesirable characteristics of the previous mechanism. An apparatus is presented wherein each of a plurality of RF AGC gain controllable amplifiers are individually controlled by individual AGC control signals generated by an AGC controller so that the level of the output signal from each of the RF AGC gain controllable amplifiers is individually optimized for tuner performance.

Abstract translation: 公开了一种在通信接收机中产生自适应增益控制信号的方法和装置。 本发明可以与现有的两级增益架构一起使用，并且克服了先前机制的许多不期望的特征。 提出了一种装置，其中多个RF AGC增益可控放大器中的每一个由AGC控制器产生的各个AGC控制信号分别控制，使得来自每个RF AGC增益可控放大器的输出信号的电平被单独优化用于调谐器 性能。

公开(公告)号：US20060052070A1

公开(公告)日：2006-03-09

申请号：US11189941

申请日：2005-07-26

Applicant: Hang Jin ,  John Grabner ,  Jun Huang ,  Daniel Ho

Inventor： Hang Jin ,  John Grabner ,  Jun Huang ,  Daniel Ho

IPC: H04B1/04

CPC classification number: H03G3/3052 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/706

Abstract: The present invention discloses a proactive gain control system for a communications receiver. The proactive gain control system includes a variable gain module for outputting an output signal in response to an input signal. A detector detects the output signal and outputs a detection signal representing a signal strength of the output signal. A traffic monitor monitors the output signal and outputs a traffic profile signal indicating that a traffic profile for the input signal will change. A gain computing module outputs a gain adjustment value in response to the detection signal and the traffic profile signal. A gain control module outputs a gain control signal to the variable gain module, which determines a gain between the input and output signals, in response to the gain adjustment value.