公开(公告)号：US09917607B1

公开(公告)日：2018-03-13

申请号：US15449619

申请日：2017-03-03

Applicant: Oracle International Corporation

Inventor： Xun Zhang ,  Dawei Huang ,  Jianghui Su ,  Chaitanya Palusa

IPC: H04L25/03 ,  H04B1/16 ,  H03G3/30 ,  H03M1/66

CPC classification number: H04B1/16 ,  H03G3/3078 ,  H03G2201/706 ,  H03M1/66 ,  H04L25/03057

Abstract: Embodiments include systems and methods for baseline wander correction gain adaptation in receiver circuits. Some embodiments operate in context of an alternating current coupled transceiver communicating data signals over a high-speed transmission channel, such that the receiver system includes an AC-coupled data input and a feedback loop with a data slicer and an error slicer. A baseline wander correction (BWC) circuit can be part of the feedback loop and can generate a feedback signal corresponding to low-pass-filtered bits data from the data slicer output and having a gain generated according to pattern-filtered error data from the error slicer output. For example, gain adaptation is performed according to error information corresponding to a detected relatively high-frequency data pattern following a long low-frequency pattern.

公开(公告)号：US07103336B1

公开(公告)日：2006-09-05

申请号：US09654274

申请日：2000-09-01

Applicant: Yoshinori Miyajima ,  Atsuhiko Hashigaya

Inventor： Yoshinori Miyajima ,  Atsuhiko Hashigaya

IPC: H04B1/06 ,  H04L27/08

CPC classification number: H04B1/1027 ,  H03G3/3052 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/307 ,  H03G2201/706 ,  H04B17/318

Abstract: The AGC threshold of electric intensity level is set by the signal processor portion 107 in response to the measured result of the error rate measuring circuit 109 that measures the error rate of the received signal, and the gain control operation of the gain control circuit 106 is caused to start when the electric field intensity detected by the field intensity detector 105 reaches the threshold of electric intensity level. Accordingly, the optimum AGC threshold of electric intensity level can be set to meet the radio wave situation in which the radio receiver, i.e., the receiving situation of the received signal and also the gain control of the gain controlling means can be achieved to optimize the signal quality of the received signal in the situation of either the IM characteristic or the electric field variation characteristic, e.g., under the environment of the strong electric field IM or the environment in which the electric field is changed strongly.

Abstract translation: 响应于测量接收信号的误码率的误差率测量电路109的测量结果，由信号处理器部分107设置电强度电平的AGC阈值，并且增益控制电路106的增益控制操作是 当由场强检测器105检测到的电场强度达到电强度水平的阈值时开始启动。 因此，可以设置电强度级的最佳AGC阈值以满足无线电接收机的无线电波情况，即接收信号的接收状况，以及增益控制装置的增益控制可以实现， 在IM特性或电场变化特性的情况下，例如在强电场IM的环境或电场强烈变化的环境下，接收信号的信号质量。

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：WO2006031573A2

公开(公告)日：2006-03-23

申请号：PCT/US2005031896

申请日：2005-09-08

Applicant: NAVINI NETWORKS INC ,  JIN HANG ,  GRABNER JOHN ,  HUANG JUN ,  HO DANIEL WEE TECK

Inventor： JIN HANG ,  GRABNER JOHN ,  HUANG JUN ,  HO DANIEL WEE TECK

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.

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可变增益模块，用于响应于输入信号输出输出信号。 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。 交通监控器监视输出信号并输出​​指示用于输入信号的业务分布将改变的业务分布信号。 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：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：US20060264111A1

公开(公告)日：2006-11-23

申请号：US11388939

申请日：2006-03-23

Applicant: Yukio Ohtaki ,  Toru Oyama

Inventor： Yukio Ohtaki ,  Toru Oyama

IPC: H01R24/00

CPC classification number: H03G3/3068 ,  H03G2201/506 ,  H03G2201/706 ,  H04B1/18 ,  H04B7/08 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/40 ,  Y02D70/444

Abstract: A first low-noise amplifier is connected to a first receiving processing unit through a first cable and a bypass circuit is provided in parallel to the first low-noise amplifier so as to bypass the first low-noise amplifier. In the case that the intensity of broadcasting signal is more than a predetermined value, when the C/N is more than a first predetermined value and less than a second predetermined value higher than the first predetermined value, the broadcasting signal is transmitted to the first cable through the first low-noise amplifier, and when the C/N is less than the first predetermined value or more than the second predetermined value, the broadcasting signal is not input to the first low-noise amplifier but transmitted to the first cable through the bypass circuit.

Abstract translation: 第一低噪声放大器通过第一电缆连接到第一接收处理单元，并且提供与第一低噪声放大器并联的旁路电路，以绕过第一低噪声放大器。 在广播信号的强度大于预定值的情况下，当C / N大于第一预定值且小于高于第一预定值的第二预定值时，将广播信号发送到第一 电缆通过第一低噪声放大器，并且当C / N小于第一预定值或大于第二预定值时，广播信号不被输入到第一低噪声放大器，而是传输到第一电缆通过 旁路电路。

公开(公告)号：US20060166633A1

公开(公告)日：2006-07-27

申请号：US11044710

申请日：2005-01-27

Applicant: Iuri Mehr

Inventor： Iuri Mehr

IPC: H04B1/06

CPC classification number: H03G3/3052 ,  H03G2201/706 ,  H04B1/26

Abstract: In one aspect, an automatic gain control (AGC) for applying a variable gain to a broadband signal is provided. The AGC comprises a variable gain amplifier adapted to receive the broadband signal as an input, the variable gain amplifier configured to apply a variable gain to the broadband signal based on a value of a gain signal to provide an amplified broadband signal, and a controller to provide the gain signal to the variable gain amplifier, the controller adapted to determine the value of the gain signal based on at least one characteristic of the amplified broadband signal. In a further aspect, the one or more characteristic is a power characteristic of the broadband signal that facilitates control of the broadband signal within a desired power range.

公开(公告)号：US20050221789A1

公开(公告)日：2005-10-06

申请号：US10879588

申请日：2004-06-30

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H03G3/30 ,  H03J3/06 ,  H04B1/12 ,  H04B1/16

CPC classification number: H04B1/123 ,  H03G3/3052 ,  H03G2201/706 ,  H03J3/06

Abstract: The invention enables a gain adjustment in a receiver to improve signal quality by varying resistance of an input resistor array of a bandpass filter, the array having a plurality of resistors in series with switches that out of the path of the current when the resistors are in use.

Abstract translation: 本发明使接收机中的增益调整能够通过改变带通滤波器的输入电阻阵列的电阻来改善信号质量，该阵列具有与当电阻器处于电流时电流路径之外的开关串联的多个电阻器 使用。

公开(公告)号：EP1583247B1

公开(公告)日：2008-01-16

申请号：EP05004477.5

申请日：2005-03-01

Applicant: Broadcom Corporation

Inventor： Pan, Meng-An

IPC: H04B1/12

CPC classification number: H04B1/123 ,  H03G3/3052 ,  H03G2201/706 ,  H03J3/06

公开(公告)号：EP1679792A2

公开(公告)日：2006-07-12

申请号：EP05251659.8

申请日：2005-03-18

Applicant: Microtune (Texas) L.P.

Inventor： Hennig, Andreas G.

IPC: H03G3/30

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: 一种用于处理信号接收器包括一个第一放大电路和第二放大电路。 第一放大器电路与第一增益曲线的关联操作。 第二放大器电路在与第二增益分布的关联操作。 该接收机还包括一个增益控制电路做bestimmt与调制信号相关联的质量指示器。 增益控制电路bestimmt第一增益曲线以及根据确定性开采质量指示符至少部分地基于所述第二增益轮廓。