公开(公告)号：US20160308564A1

公开(公告)日：2016-10-20

申请号：US14825141

申请日：2015-08-12

Applicant: Telefonaktiebolaget L M Ericsson (publ)

Inventor： Peter Alriksson ,  Joakim Axmon

IPC: H04B1/12

CPC classification number: H04B1/123 ,  H03G3/3078 ,  H03G2201/103 ,  H03G2201/702 ,  H04W52/52

Abstract: The gain of an amplifier in a receiver operating in a cellular communication system is controlled by determining one or more gain variability metrics, which are then used to produce first and second threshold values. A frequency difference between a current carrier frequency and a target carrier frequency is ascertained and then compared to the threshold values. Target gain setting production is based on comparison results: If the frequency difference is larger than the first threshold, a full automatic gain control algorithm is performed; if the frequency difference is smaller than the first threshold and larger than the second threshold, an optimized automatic gain control algorithm is performed, wherein the optimized automatic gain control algorithm uses a current gain setting as a starting point; and if the frequency difference is smaller than both the first and second thresholds, the current gain setting is used as the target gain setting.

Abstract translation: 通过确定一个或多个增益变异性度量来控制在蜂窝通信系统中操作的接收机中的放大器的增益，然后将其用于产生第一和第二阈值。 确定当前载波频率和目标载波频率之间的频率差，然后与阈值进行比较。 目标增益设置生产是基于比较结果：如果频差大于第一阈值，则执行全自动增益控制算法; 如果频率差小于第一阈值并且大于第二阈值，则执行优化的自动增益控制算法，其中优化的自动增益控制算法使用电流增益设置作为起点; 并且如果频率差小于第一和第二阈值，则将当前增益设置用作目标增益设置。

公开(公告)号：US20060246858A1

公开(公告)日：2006-11-02

申请号：US11159926

申请日：2005-06-23

Applicant: Steven Boerman ,  Paul DiCarlo ,  Patrice Reginella

Inventor： Steven Boerman ,  Paul DiCarlo ,  Patrice Reginella

IPC: H04B1/04

CPC classification number: H03G3/3042 ,  H03G2201/702 ,  H04B1/04 ,  H04B2001/0416

Abstract: A method and apparatus for power detection in a multi-mode communication device configured for operation in different modes or frequency bands. A detector monitors the power level of an amplified outgoing signal. The detector may be configured with a switch and two or more samplers. Responsive to the mode of operation, the detector adopts an optimal configuration to generate a power level feedback signal, which is provided to a digital signal processor or controller. Comparison of the power level feedback signal to a target value may occur to generate an amplifier control signal. The amplifier control signal controls the gain, applied by an amplifier, to the outgoing signal. During operation, the system monitors for a change in the mode of operation and upon responsive to a change, generates a switch control signal to reconfigure the detector configuration to match the new mode of operation.

公开(公告)号：US20050221778A1

公开(公告)日：2005-10-06

申请号：US11087574

申请日：2005-03-24

Applicant: Takeshi Ishihara

Inventor： Takeshi Ishihara

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

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

Abstract: 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.

Abstract translation: 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：US20030034839A1

公开(公告)日：2003-02-20

申请号：US09931737

申请日：2001-08-20

Inventor： Peter John Poggi ,  Tim Dittmer ,  George Cabrera

IPC: H03G003/20

CPC classification number: H03G3/3042 ,  H03F1/0222 ,  H03F1/0233 ,  H03F1/0244 ,  H03F1/0277 ,  H03F3/211 ,  H03G3/004 ,  H03G2201/103 ,  H03G2201/504 ,  H03G2201/508 ,  H03G2201/702

Abstract: The variable power supply to an amplifier in an electrical circuit is dynamically controlled through the use of a lookup table responsive to one or more operating conditions of the electrical circuit. The lookup table is indexed by one or more of the operating conditions and the amount of amplification to be applied to an input signal to the amplifier is determined. One embodiment of the invention comprises a television transmitter circuit including a power amplifier circuit capable of amplifying a variable frequency COFDM or 8VSB input signal where the amount of amplification applied to the input signal is dynamically controlled through the use of a lookup table as a function of the frequency of the input signal.

Abstract translation: 通过使用响应于电路的一个或多个操作条件的查找表来动态地控制电路中的放大器的可变电源。 查找表由一个或多个操作条件索引，并确定要施加到放大器的输入信号的放大量。 本发明的一个实施例包括一种电视发射机电路，其包括能够放大可变频率COFDM或8VSB输入信号的功率放大器电路，其中通过使用查找表作为函数来动态地控制施加到输入信号的放大量 输入信号的频率。

公开(公告)号：US20180102803A1

公开(公告)日：2018-04-12

申请号：US15567074

申请日：2016-04-11

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Peter ALRIKSSON ,  Joakim AXMON

IPC: H04B1/12 ,  H04W52/52 ,  H03G3/30

CPC classification number: H04B1/123 ,  H03G3/3078 ,  H03G2201/103 ,  H03G2201/702 ,  H04W52/52

Abstract: The gain of an amplifier in a receiver operating in a cellular communication system is controlled by determining one or more gain variability metrics, which are then used to produce first and second threshold values. A frequency difference between a current carrier frequency and a target carrier frequency is ascertained and then compared to the threshold values. Target gain setting production is based on comparison results: If the frequency difference is larger than the first threshold, a first automatic gain control algorithm is performed; if the frequency difference is smaller than the first threshold and larger than the second threshold, a second automatic gain control algorithm is performed, wherein the second automatic gain control algorithm uses a current gain setting as a starting point; and if the frequency difference is smaller than both the first and second thresholds, the current gain setting is used as the target gain setting.

公开(公告)号：US07493093B2

公开(公告)日：2009-02-17

申请号：US11159926

申请日：2005-06-23

Applicant: Steven P. Boerman ,  Paul T. DiCarlo ,  Patrice Reginella

Inventor： Steven P. Boerman ,  Paul T. DiCarlo ,  Patrice Reginella

IPC: H01Q11/12 ,  H04B1/04

CPC classification number: H03G3/3042 ,  H03G2201/702 ,  H04B1/04 ,  H04B2001/0416

Abstract: A method and apparatus for power detection in a multi-mode communication device configured for operation in different modes or frequency bands. A detector monitors the power level of an amplified outgoing signal. The detector may be configured with a switch and two or more samplers. Responsive to the mode of operation, the detector adopts an optimal configuration to generate a power level feedback signal, which is provided to a digital signal processor or controller. Comparison of the power level feedback signal to a target value may occur to generate an amplifier control signal. The amplifier control signal controls the gain, applied by an amplifier, to the outgoing signal. During operation, the system monitors for a change in the mode of operation and upon responsive to a change, generates a switch control signal to reconfigure the detector configuration to match the new mode of operation.

Abstract translation: 一种用于在不同模式或频带中操作的多模式通信设备中的功率检测方法和装置。 检测器监视放大输出信号的功率电平。 检测器可以配置有开关和两个或更多个采样器。 响应于操作模式，检测器采用最佳配置来产生功率电平反馈信号，该信号提供给数字信号处理器或控制器。 功率电平反馈信号与目标值的比较可能发生，以产生放大器控制信号。 放大器控制信号将由放大器施加的增益控制为输出信号。 在操作期间，系统监视操作模式的改变，并且响应于改变，产生开关控制信号以重新配置检测器配置以匹配新的操作模式。

公开(公告)号：US20070176681A1

公开(公告)日：2007-08-02

申请号：US10589076

申请日：2005-02-08

Applicant: Hidenori Matsumoto

Inventor： Hidenori Matsumoto

IPC: H03G3/00

CPC classification number: H03G1/0088 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/506 ,  H03G2201/702 ,  H03G2201/708 ,  H04B2001/0416

Abstract: A transmission power control apparatus which reduces the number of steps required for adjustments of the transmission power control apparatus and performs transmission power control with high accuracy in a wide dynamic range. The apparatus has a first variable amplifying circuit (122) with the resolution of 1 dB and a second variable amplifying circuit (123) with the resolution of 0.1 dB, where a correction value calculating section (106) calculates a correction value to compensate for deterioration in the accuracy of transmission power caused by a change in environment due to frequency characteristics and temperature characteristics and another correction value to compensate for error in transmission power, a transmission power calculating section (107) calculates transmission power obtained by correcting with the correction value specified transmission power to output to a communicating party based on the received signal, and a first set value calculating section (108) and a second set value calculating section (109) calculate gain values to set on the first variable amplifying circuit (122) and second variable amplifying circuit (123) based on the corrected transmission power, respectively.

Abstract translation: 一种发送功率控制装置，其减少了调整发送功率控制装置所需的步骤数量，并且在宽动态范围内以高精度执行发送功率控制。 该装置具有分辨率为1dB的第一可变放大电路（122）和分辨率为0.1dB的第二可变放大电路（123），其中校正值计算部分（106）计算校正值以补偿劣化 在由于频率特性和温度特性引起的由环境变化引起的发送功率的精度以及用于补偿发送功率误差的另一校正值的情况下，发送功率计算部（107）计算通过指定的校正值进行校正而获得的发送功率 发送功率，基于接收信号输出到通信对方，第一设定值计算部（108）和第二设定值计算部（109）计算设定在第1可变放大电路（122）和第2可变放大电路 可变放大电路（123）基于校正的发射功率， y。

公开(公告)号：US20050009490A1

公开(公告)日：2005-01-13

申请号：US10841591

申请日：2004-05-06

Applicant: Hyung-Soo Lee ,  Sang-In Cho ,  Kyu-Min Kang ,  Chang-Joo Kim

Inventor： Hyung-Soo Lee ,  Sang-In Cho ,  Kyu-Min Kang ,  Chang-Joo Kim

IPC: H04B7/26 ,  H03G3/30 ,  H04B1/69 ,  H04B7/005 ,  H03F3/45

CPC classification number: H04W52/52 ,  H03G3/3052 ,  H03G2201/103 ,  H03G2201/502 ,  H03G2201/702 ,  H04B1/71637

Abstract: Disclosed is a method for controlling power level of received signal in an ultra wide band transmission system which uses multi frequency bands, and includes a pre-gain controller (PGC) and a voltage gain amplifier (VGA). The method for controlling a power level of a received signal includes the steps of: a) at the PGCs, detecting which multi frequency band is used in a transmitter of the transmission system; b) at the PGCs, obtaining the voltage gain owing to the discrepancy in the power levels of the received signals; and c) at the PGCs, compensating for the power loss based on the voltage gain.

Abstract translation: 公开了一种在使用多频带的超宽带传输系统中控制接收信号的功率电平的方法，包括预增益控制器（PGC）和电压增益放大器（VGA）。 用于控制接收信号的功率电平的方法包括以下步骤：a）在PGC检测在传输系统的发射机中使用哪个多频带; b）在PGC处，由于接收到的信号的功率电平的差异而获得电压增益; 和c）在PGC处，基于电压增益来补偿功率损耗。

公开(公告)号：US09716521B2

公开(公告)日：2017-07-25

申请号：US14825141

申请日：2015-08-12

Applicant: Telefonaktiebolaget L M Ericsson (publ)

Inventor： Peter Alriksson ,  Joakim Axmon

IPC: H04B1/12 ,  H03G3/30 ,  H04W52/52

CPC classification number: H04B1/123 ,  H03G3/3078 ,  H03G2201/103 ,  H03G2201/702 ,  H04W52/52

Abstract: The gain of an amplifier in a receiver operating in a cellular communication system is controlled by determining one or more gain variability metrics, which are then used to produce first and second threshold values. A frequency difference between a current carrier frequency and a target carrier frequency is ascertained and then compared to the threshold values. Target gain setting production is based on comparison results: If the frequency difference is larger than the first threshold, a full automatic gain control algorithm is performed; if the frequency difference is smaller than the first threshold and larger than the second threshold, an optimized automatic gain control algorithm is performed, wherein the optimized automatic gain control algorithm uses a current gain setting as a starting point; and if the frequency difference is smaller than both the first and second thresholds, the current gain setting is used as the target gain setting.

公开(公告)号：US08638837B2

公开(公告)日：2014-01-28

申请号：US12735295

申请日：2009-01-27

Applicant: Takeshi Ejima

Inventor： Takeshi Ejima

IPC: H04B1/38

CPC classification number: H04B1/713 ,  H03G3/3052 ,  H03G2201/702 ,  H04B17/318 ,  H04L27/2647

Abstract: A disclosed radio communication apparatus includes an amplifier configured to amplify a signal received via one of multiple channels including a channel where frequency hopping is conducted; a signal strength measurement circuit configured to measure signal strength of the received signal; and a gain value computation unit configured to compute a gain value for the amplifier based on the signal strength measured by the signal strength measurement circuit. The gain value computation unit is configured to use values specific to the respective channels as coefficients of a function to compute the gain value.

Abstract translation: 所公开的无线电通信装置包括：放大器，被配置为放大经由多个信道之一接收的信号，包括进行跳频的信道; 信号强度测量电路，被配置为测量接收信号的信号强度; 以及增益值计算单元，被配置为基于由信号强度测量电路测量的信号强度来计算放大器的增益值。 增益值计算单元被配置为使用对各个通道特有的值作为计算增益值的函数的系数。