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。

公开(公告)号：US20090093225A1

公开(公告)日：2009-04-09

申请号：US12334962

申请日：2008-12-15

Applicant: Qinhuai FAN

Inventor： Qinhuai FAN

IPC: H04B1/04 ,  H03G3/20

CPC classification number: H04B1/04 ,  H03F1/0211 ,  H03F3/24 ,  H03F2200/451 ,  H03G3/004 ,  H03G3/30 ,  H03G3/3042 ,  H03G2201/702 ,  H03G2201/704 ,  H04B2001/0416

Abstract: A method for enabling a power amplifier to support multiple powers includes: calculating a transmit power, according to RF parameters delivered by a baseband board, determining a power amplifier voltage according to the transmit power and a corresponding relationship between the transmit power and the power amplifier voltage, and adjusting a supply voltage of the power amplifier, according to the determined power amplifier voltage, so as to adjust an output power of the power amplifier. A RF module includes a conversion module that converts a baseband board signal into a RF signal, an antenna linear device, a storage module, a power amplifier module, an adjustable power module, and a power control module. A test method is employed to determine the relationship between a transmit power and a power amplifier voltage.

Abstract translation: 一种用于使功率放大器支持多个功率的方法包括：根据基带板传送的RF参数来计算发射功率，根据发射功率确定功率放大器电压，以及发射功率与功率放大器之间的对应关系 电压，并根据确定的功率放大器电压调整功率放大器的电源电压，以便调节功率放大器的输出功率。 RF模块包括将基带板信号转换为RF信号的转换模块，天线线性装置，存储模块，功率放大器模块，可调节功率模块和功率控制模块。 采用测试方法来确定发射功率和功率放大器电压之间的关系。

公开(公告)号：US07392027B2

公开(公告)日：2008-06-24

申请号：US11087574

申请日：2005-03-24

Applicant: Takeshi Ishihara

Inventor： Takeshi Ishihara

IPC: 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：US07260374B2

公开(公告)日：2007-08-21

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: H04B1/06

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：JP2005229274A

公开(公告)日：2005-08-25

申请号：JP2004035027

申请日：2004-02-12

Applicant: Matsushita Electric Ind Co Ltd ,  松下電器産業株式会社

Inventor： MATSUMOTO HIDENORI

IPC: H03F3/24 ,  H03G3/20 ,  H03G3/30 ,  H04B1/04 ,  H04B7/26

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

Abstract: PROBLEM TO BE SOLVED: To provide a transmission power controller performing high precision transmission power control over a wide dynamic range while decreasing the number of steps required for regulating a transmission power controller.
SOLUTION: The transmission power controller comprises a first variable amplification circuit 122 having resolution of 1 dB and a second variable amplification circuit 123 having resolution of 0.1 dB, a section 106 calculating a correction value for compensating degradation of transmission power accuracy due to environmental variation of frequency characteristics and temperature characteristics, and a correction value for compensating transmission power error, a section 107 for calculating a specified transmission power being outputted to a communication partner corrected based on a received signal, and first and second set value calculating sections 108 and 109 for calculating gain values being set in the first and second variable amplification circuits 122 and 123 based on the corrected transmission power.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种在宽动态范围内执行高精度发送功率控制的发送功率控制器，同时减少调节发送功率控制器所需的步数。 解决方案：发射功率控制器包括分辨率为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，计算用于补偿由于 频率特性和温度特性的环境变化以及用于补偿发射功率误差的校正值，用于计算输出到基于接收信号校正的通信对象的规定发射功率的部分107以及第一和第二设定值计算部分108 以及109，用于基于校正的发送功率计算在第一和第二可变放大电路122和123中设置的增益值。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：US11901926B2

公开(公告)日：2024-02-13

申请号：US17560136

申请日：2021-12-22

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Peter Alriksson ,  Joakim Axmon

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

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

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：US20150079915A1

公开(公告)日：2015-03-19

申请号：US14547843

申请日：2014-11-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qinhuai FAN

IPC: H04B1/04

CPC classification number: H04B1/04 ,  H03F1/0211 ,  H03F3/24 ,  H03F2200/451 ,  H03G3/004 ,  H03G3/30 ,  H03G3/3042 ,  H03G2201/702 ,  H03G2201/704 ,  H04B2001/0416

Abstract: A method for enabling a power amplifier to support multiple powers includes: calculating a transmit power according to RF parameters delivered by a baseband board, determining a power amplifier voltage according to the transmit power and a corresponding relationship between the transmit power and the power amplifier voltage, and adjusting a supply voltage of the power amplifier according to the determined power amplifier voltage so as to adjust an output power of the power amplifier. An RF module includes a conversion module that converts a baseband board signal into an RF signal, an antenna linear device, a storage module, a power amplifier module, an adjustable power module, and a power control module. A test method is employed to determine the relationship between a transmit power and a power amplifier voltage.

Abstract translation: 一种用于使能功率放大器支持多个功率的方法包括：根据由基带板传送的RF参数来计算发射功率，根据发射功率确定功率放大器电压以及发射功率与功率放大器电压之间的对应关系 ，并且根据所确定的功率放大器电压调整功率放大器的电源电压，以便调整功率放大器的输出功率。 RF模块包括将基带板信号转换为RF信号的转换模块，天线线性装置，存储模块，功率放大器模块，可调电源模块和功率控制模块。 采用测试方法来确定发射功率和功率放大器电压之间的关系。

公开(公告)号：US08909178B2

公开(公告)日：2014-12-09

申请号：US12334962

申请日：2008-12-15

Applicant: Qinhuai Fan

Inventor： Qinhuai Fan

IPC: H04B1/04 ,  H03G3/30 ,  H03F1/02 ,  H03F3/24 ,  H03G3/00

CPC classification number: H04B1/04 ,  H03F1/0211 ,  H03F3/24 ,  H03F2200/451 ,  H03G3/004 ,  H03G3/30 ,  H03G3/3042 ,  H03G2201/702 ,  H03G2201/704 ,  H04B2001/0416

Abstract: A method for enabling a power amplifier to support multiple powers includes: calculating a transmit power, according to RF parameters delivered by a baseband board, determining a power amplifier voltage according to the transmit power and a corresponding relationship between the transmit power and the power amplifier voltage, and adjusting a supply voltage of the power amplifier, according to the determined power amplifier voltage, so as to adjust an output power of the power amplifier. A RF module includes a conversion module that converts a baseband board signal into a RF signal, an antenna linear device, a storage module, a power amplifier module, an adjustable power module, and a power control module. A test method is employed to determine the relationship between a transmit power and a power amplifier voltage.

Abstract translation: 一种用于使功率放大器支持多个功率的方法包括：根据基带板传送的RF参数来计算发射功率，根据发射功率确定功率放大器电压，以及发射功率与功率放大器之间的对应关系 电压，并根据确定的功率放大器电压调整功率放大器的电源电压，以便调节功率放大器的输出功率。 RF模块包括将基带板信号转换为RF信号的转换模块，天线线性装置，存储模块，功率放大器模块，可调节功率模块和功率控制模块。 采用测试方法来确定发射功率和功率放大器电压之间的关系。

公开(公告)号：US20100284450A1

公开(公告)日：2010-11-11

申请号：US12735295

申请日：2009-01-27

Applicant: Takeshi Ejima

Inventor： Takeshi Ejima

IPC: H04L27/08 ,  H04L25/02

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。