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：US07577414B2

公开(公告)日：2009-08-18

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.

Abstract translation: 一方面，提供了一种用于向宽带信号施加可变增益的自动增益控制（AGC）。 AGC包括适于接收宽带信号作为输入的可变增益放大器，所述可变增益放大器被配置为基于增益信号的值向宽带信号施加可变增益以提供放大的宽带信号，以及控制器 将增益信号提供给可变增益放大器，该控制器适于基于放大的宽带信号的至少一个特性来确定增益信号的值。 在另一方面，一个或多个特征是宽带信号的功率特性，其有助于在期望的功率范围内控制宽带信号。

公开(公告)号：US07376409B2

公开(公告)日：2008-05-20

申请号：US10879588

申请日：2004-06-30

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H04B1/10

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：US07274322B2

公开(公告)日：2007-09-25

申请号：US11161163

申请日：2005-07-25

Applicant: Jeffrey A. Hester ,  Radde Majeed ,  Julia R. Baryl

Inventor： Jeffrey A. Hester ,  Radde Majeed ,  Julia R. Baryl

IPC: G01S7/34

CPC classification number: H03G3/3078 ,  G01S7/34 ,  G01S7/4021 ,  H03G3/001 ,  H03G2201/706 ,  Y10S73/90

Abstract: Apparatus and methods for performing automatic gain control in a radar system. One embodiment of the system includes an attenuator that controls gain of signals received from a radar receiver. A digital signal processor determines coarse gain correction based on digitized noise data for a plurality of channels, determines fine gain correction based on the residual error after the coarse gain, and determines frequency vs. gain curve correction based on the digitized noise data for a plurality of channels and a mathematical model of frequency gain across a noise spectrum for the radar system. The result of the processor is a gain control signal that is sent to the attenuator to perform hardware gain control and a channel specific scale factor for software gain control. In one embodiment, the processor generates the gain control signal during an inactive scan mode of the radar system.

Abstract translation: 在雷达系统中执行自动增益控制的装置和方法。 该系统的一个实施例包括衰减器，其控制从雷达接收器接收的信号的增益。 数字信号处理器基于多个通道的数字化噪声数据来确定粗增益校正，基于粗增益之后的残差来确定精细增益校正，并且基于多个数字化噪声数据确定频率对增益曲线校正 的通道和用于雷达系统的噪声频谱的频率增益的数学模型。 处理器的结果是发送到衰减器以执行硬件增益控制和用于软件增益控制的通道特定比例因子的增益控制信号。 在一个实施例中，处理器在雷达系统的非活动扫描模式期间产生增益控制信号。

公开(公告)号：US07250899B2

公开(公告)日：2007-07-31

申请号：US11172947

申请日：2005-07-05

Applicant: Howard James Smith ,  Stefan Fulga ,  Paul Wallis

Inventor： Howard James Smith ,  Stefan Fulga ,  Paul Wallis

IPC: G01S7/36

CPC classification number: H03G3/3078 ,  G01S19/21 ,  H03G2201/706 ,  H04K3/224 ,  H04K3/90 ,  H04K2203/16

Abstract: A method and apparatus for limiting the effect of interfering transmission on a Global Positioning System (GPS) receiver is disclosed. A first mode of operation of the GPS receiver is provided wherein the AGC of the receiver is operated in a linear state. A second mode of operation of the GPS receiver is provided wherein the AGC of the receiver is operated in a non-linear state. A first signal is provided indicating a presence of a jamming signal. In response to the first signal the GPS receiver is switched from the first mode of operation to the second mode of operation.

公开(公告)号：US20070008215A1

公开(公告)日：2007-01-11

申请号：US11172947

申请日：2005-07-05

Applicant: Howard Smith ,  Stefan Fulga ,  Paul Wallis

Inventor： Howard Smith ,  Stefan Fulga ,  Paul Wallis

IPC: G01S5/14

CPC classification number: H03G3/3078 ,  G01S19/21 ,  H03G2201/706 ,  H04K3/224 ,  H04K3/90 ,  H04K2203/16

Abstract: A method and apparatus for limiting the effect of interfering transmission on a Global Positioning System (GPS) receiver is disclosed. A first mode of operation of the GPS receiver is provided wherein the AGC of the receiver is operated in a linear state. A second mode of operation of the GPS receiver is provided wherein the AGC of the receiver is operated in a non-linear state. A first signal is provided indicating a presence of a jamming signal. In response to the first signal the GPS receiver is switched from the first mode of operation to the second mode of operation.

Abstract translation: 公开了一种用于限制干扰传输对全球定位系统（GPS）接收机的影响的方法和装置。 提供了GPS接收机的第一操作模式，其中接收器的AGC以线性状态操作。 提供了一种GPS接收机的第二操作模式，其中接收机的AGC在非线性状态下操作。 提供指示存在干扰信号的第一信号。 响应于第一信号，GPS接收机从第一操作模式切换到第二操作模式。

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.

公开(公告)号：US20050221788A1

公开(公告)日：2005-10-06

申请号：US10840271

申请日：2004-05-07

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.

Abstract translation: 本发明使得接收机中的增益调整能够提高信号质量。