中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

60 records (took 0.021 seconds)

    Vehicle-mounted receiving apparatus for reducing distortion, improving reception sensitivity, and saving power
    17.
    发明授权
    Vehicle-mounted receiving apparatus for reducing distortion, improving reception sensitivity, and saving power 失效
    用于减少失真，提高接收灵敏度和节省电力的车载接收装置

    公开(公告)号：US07454180B2

    公开(公告)日：2008-11-18

    申请号：US11388939

    申请日：2006-03-23

    Applicant: Yukio Ohtaki ,  Toru Oyama

    Inventor： Yukio Ohtaki ,  Toru Oyama

    IPC: H04B7/08

    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。

    SYSTEMS AND METHODS FOR AUTOMATIC GAIN CONTROL FOR MULTICHANNEL RECEIVERS
    18.
    发明申请
    SYSTEMS AND METHODS FOR AUTOMATIC GAIN CONTROL FOR MULTICHANNEL RECEIVERS 有权
    用于多通道接收机的自动增益控制的系统和方法

    公开(公告)号：US20070018883A1

    公开(公告)日：2007-01-25

    申请号：US11161163

    申请日：2005-07-25

    Applicant: Jeffrey Hester ,  Radde Majeed ,  Julia Baryl

    Inventor： Jeffrey Hester ,  Radde Majeed ,  Julia 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。

    Proactive gain control system for communications receivers
    19.
    发明授权
    Proactive gain control system for communications receivers 有权
    通信接收机主动增益控制系统

    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。

Patent Agency Ranking