公开(公告)号：US07606544B2

公开(公告)日：2009-10-20

申请号：US11023691

申请日：2004-12-28

申请人： Andreas G. Hennig

发明人： Andreas G. Hennig

IPC分类号： H04B7/00

CPC分类号： H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/706

摘要： 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.

摘要翻译： 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：US07212795B2

公开(公告)日：2007-05-01

申请号：US10864193

申请日：2004-06-09

申请人： Der-Zheng Liu ,  Song-Nien Tang ,  Tai-Cheng Liu ,  Kuang-Yu Yen

发明人： Der-Zheng Liu ,  Song-Nien Tang ,  Tai-Cheng Liu ,  Kuang-Yu Yen

IPC分类号： H04B1/06

CPC分类号： H03G3/3052 ,  H03G2201/206 ,  H03G2201/302 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/502 ,  H03G2201/508 ,  H03M1/185 ,  H04B7/0814

摘要： The invention provides an automatic gain control and antenna selection method used in a receiver of a radio communication system. The received signal power is estimated by digital signal processing after analog-to-digital conversion in the system, in order to adjust the gain of the front end analog signal until the magnitude of the analog signal is adjusted to an optimum range of the digital signal processing. In addition, the ADC is utilized to estimate the signal power as the basis of the antenna selection.

摘要翻译： 本发明提供一种在无线电通信系统的接收机中使用的自动增益控制和天线选择方法。 接收到的信号功率通过系统中模数转换后的数字信号处理来估计，以便调整前端模拟信号的增益，直到模拟信号的幅度被调整到数字信号的最佳范围 处理。 此外，ADC用于估计信号功率作为天线选择的基础。

公开(公告)号：US20060205372A1

公开(公告)日：2006-09-14

申请号：US10542466

申请日：2004-01-20

申请人： Aaron Bouillet ,  Matthew Mayer

发明人： Aaron Bouillet ,  Matthew Mayer

IPC分类号： H04B7/00 ,  H04B1/06

CPC分类号： H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307

摘要： 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.

摘要翻译： 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

申请人： Hang Jin ,  John Grabner ,  Jun Huang ,  Daniel Ho

发明人： Hang Jin ,  John Grabner ,  Jun Huang ,  Daniel Ho

IPC分类号： H04B1/04

CPC分类号： H03G3/3052 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/706

摘要： 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：US20060141965A1

公开(公告)日：2006-06-29

申请号：US11023691

申请日：2004-12-28

申请人： Andreas Hennig

发明人： Andreas Hennig

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/706

摘要： 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：US20060079193A1

公开(公告)日：2006-04-13

申请号：US11287787

申请日：2005-11-28

申请人： Tadahiro Sato ,  Akifumi Adachi

发明人： Tadahiro Sato ,  Akifumi Adachi

IPC分类号： H04B17/02 ,  H04B1/06

CPC分类号： H03G3/3052 ,  H03G3/005 ,  H03G3/3078 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/305 ,  H04B1/707 ,  H04B2201/70701 ,  H04B2201/70706

摘要： A radio receiver includes a branching unit, a first gain-control system, a second-gain control system, and a signal processing unit. The branching unit branches a radio signal received by the radio receiver into two signals. The first-gain control system performs a gain control of a pilot signal in one of branched signals, and the second gain control system performs a gain control of a data signal in another of the branched signals. The signal processing unit synchronizes frames in the received radio signal. The signal processing unit outputs a gain signal to each of the first gain-control system and the second gain-control system. The first gain-control system and the second gain-control system perform the gain controls based on the gain signal.

公开(公告)号：US20050221778A1

公开(公告)日：2005-10-06

申请号：US11087574

申请日：2005-03-24

申请人： Takeshi Ishihara

发明人： Takeshi Ishihara

IPC分类号： H03G3/20 ,  H03F3/45 ,  H03G3/00 ,  H03G3/30 ,  H03M1/12 ,  H03M1/18 ,  H04B1/06 ,  H04B1/16 ,  H04B7/00

CPC分类号： H04W52/22 ,  H03G3/3068 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/702 ,  H03M1/122 ,  H03M1/18 ,  H03M1/183

摘要： An automatic gain control device includes an amplifier for a reception signal, a signal processing unit, a memory, and a control unit. The amplifier can set a gain. The signal processing unit extracts control data from an output from the amplifier and performs information processing for the data. The memory stores the gain setting value of the amplifier. The control unit controls the gain of the amplifier in accordance with a preset control algorithm. On the basis of the result obtained when the control unit computes a gain setting value stored in the memory in accordance with a preset algorithm, the control unit controls the gain of the amplifier in correspondence with operation of switching the frequency of a reception signal, which is accompanied by different frequency monitoring in the compressed mode by the signal processing unit. A radio communication terminal, a control method for an automatic gain control device, a control program for an automatic gain control device, an automatic gain control method, a radio communication system, and a radio communication method are also disclosed.

摘要翻译： 自动增益控制装置包括用于接收信号的放大器，信号处理单元，存储器和控制单元。 放大器可以设置增益。 信号处理单元从放大器的输出中提取控制数据，并执行数据的信息处理。 存储器存储放大器的增益设置值。 控制单元根据预设的控制算法来控制放大器的增益。 基于当控制单元根据预设算法计算存储在存储器中的增益设定值时获得的结果，控制单元根据接收信号频率的切换操作来控制放大器的增益，其中 伴随着信号处理单元在压缩模式下的不同频率监视。 还公开了无线电通信终端，自动增益控制装置的控制方法，自动增益控制装置的控制程序，自动增益控制方法，无线电通信系统和无线电通信方法。

公开(公告)号：US08041322B2

公开(公告)日：2011-10-18

申请号：US12359358

申请日：2009-01-26

申请人： Hiroji Akahori

发明人： Hiroji Akahori

IPC分类号： H04B1/06

CPC分类号： H03G3/3068 ,  H03G2201/204 ,  H03G2201/206 ,  H03G2201/305 ,  H03G2201/307

摘要： 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.

摘要翻译： 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

申请人： Hiroji Akahori

发明人： Hiroji Akahori

IPC分类号： H04B1/06

CPC分类号： H03G3/3068 ,  H03G2201/204 ,  H03G2201/206 ,  H03G2201/305 ,  H03G2201/307

摘要： 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.

摘要翻译： 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：US07392027B2

公开(公告)日：2008-06-24

申请号：US11087574

申请日：2005-03-24

申请人： Takeshi Ishihara

发明人： Takeshi Ishihara

IPC分类号： H04B7/00

CPC分类号： H04W52/22 ,  H03G3/3068 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/702 ,  H03M1/122 ,  H03M1/18 ,  H03M1/183

摘要： An automatic gain control device includes an amplifier for a reception signal, a signal processing unit, a memory, and a control unit. The amplifier can set a gain. The signal processing unit extracts control data from an output from the amplifier and performs information processing for the data. The memory stores the gain setting value of the amplifier. The control unit controls the gain of the amplifier in accordance with a preset control algorithm. On the basis of the result obtained when the control unit computes a gain setting value stored in the memory in accordance with a preset algorithm, the control unit controls the gain of the amplifier in correspondence with operation of switching the frequency of a reception signal, which is accompanied by different frequency monitoring in the compressed mode by the signal processing unit. A radio communication terminal, a control method for an automatic gain control device, a control program for an automatic gain control device, an automatic gain control method, a radio communication system, and a radio communication method are also disclosed.

摘要翻译： 自动增益控制装置包括用于接收信号的放大器，信号处理单元，存储器和控制单元。 放大器可以设置增益。 信号处理单元从放大器的输出中提取控制数据，并执行数据的信息处理。 存储器存储放大器的增益设置值。 控制单元根据预设的控制算法来控制放大器的增益。 基于当控制单元根据预设算法计算存储在存储器中的增益设定值时获得的结果，控制单元根据接收信号频率的切换操作来控制放大器的增益，其中 伴随着信号处理单元在压缩模式下的不同频率监视。 还公开了无线电通信终端，自动增益控制装置的控制方法，自动增益控制装置的控制程序，自动增益控制方法，无线电通信系统和无线电通信方法。