公开(公告)号：EP1650890A1

公开(公告)日：2006-04-26

申请号：EP03817647.5

申请日：2003-07-25

Applicant: FUJITSU LIMITED

Inventor： SATO, Tadahiro c/o FUJITSU LIMITED ,  ADACHI, Akifumi c/o FUJITSU LIMITED

IPC: H04J3/00 ,  H04J11/00 ,  H04B1/16 ,  H03G3/20

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

Abstract: A received frame is branched into a gain control system (20A) for common pilot signals and a gain control system (20B) for individual data signals. The gain control system (20A) controls the gain of the common pilot signals, and the gain control system (20B) controls the gain of the data signals. A signal processor (30) establishes synchronization of frames, outputs a gain control signal (g1) so that the gain of the common pilot signal is constant, to a gain control circuit (21a) for the common pilot signals, and outputs a gain control signal (g2) so that the gain of the data signal is constant, to a gain control circuit (21b) for the data signals. The gain is controlled to be constant, thereby preventing saturation of ADC (26a, 26b, 27a, 27b) and S/N deterioration.

Abstract translation: 接收到的帧被分支成用于公共导频信号的增益控制系统（20A）和用于各个数据信号的增益控制系统（20B）。 增益控制系统（20A）控制公共导频信号的增益，增益控制系统（20B）控制数据信号的增益。 信号处理器（30）建立帧的同步，输出用于公共导频信号的增益控制电路（21a）的公共导频信号的增益恒定的增益控制信号（g1），并输出增益控制 信号（g2），使得数据信号的增益恒定到用于数据信号的增益控制电路（21b）。 增益被控制为恒定，从而防止ADC（26a，26b，27a，27b）的饱和和S / N恶化。

公开(公告)号：EP1428313A2

公开(公告)日：2004-06-16

申请号：EP02759314.4

申请日：2002-08-12

Applicant: HARRIS CORPORATION

Inventor： POGGI, Peter, John ,  DITTMER, Timothy ,  CABRERA, George

IPC: H03F3/04

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 (12) to an amplifier (10) in an electrical circuit is dynamically controlled through the use of a lookup table (14) 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 (11) 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.

公开(公告)号：WO2018128764A1

公开(公告)日：2018-07-12

申请号：PCT/US2017/066246

申请日：2017-12-14

Applicant: QUALCOMM INCORPORATED

Inventor： HANAFI, Bassel ,  ABDELHALEM, Sherif ,  LAKDAWALA, Hasnain

IPC: H03F3/193 ,  H03F3/26 ,  H03F1/22 ,  H03F1/56 ,  H03F3/21 ,  H03F3/24 ,  H03F3/68 ,  H03F3/72 ,  H03G3/30

CPC classification number: H03G1/0005 ,  H03F1/0205 ,  H03F1/223 ,  H03F1/56 ,  H03F3/19 ,  H03F3/193 ,  H03F3/21 ,  H03F3/211 ,  H03F3/245 ,  H03F3/265 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/213 ,  H03F2200/222 ,  H03F2200/231 ,  H03F2200/294 ,  H03F2200/42 ,  H03F2200/451 ,  H03F2200/546 ,  H03G1/0017 ,  H03G3/3052 ,  H03G2201/103 ,  H03G2201/106

Abstract: Certain aspects of the present disclosure generally relate to a multi-output amplifier (400) implemented using a capacitive attenuator (414). For example, the multi-output amplifier (400) generally includes a first capacitive attenuator (414) coupled to an input node of the multi-output amplifier (400). In certain aspects, the multi-output amplifier (400) also includes a first amplification stage (416) having an input coupled to a tap node of the first capacitive attenuator (414) and an output coupled to a first output node of the multi-output amplifier (400), and a second amplification stage (418) having an output coupled to a second output node of the multi-output amplifier (400). For certain aspects, the multi-output amplifier includes a second capacitive attenuator coupled to the input node of the multi-output amplifier, and the second amplification stage has an input coupled to a tap node of the second capacitive attenuator.

公开(公告)号：WO2005011165A1

公开(公告)日：2005-02-03

申请号：PCT/JP2003/009484

申请日：2003-07-25

Applicant: 富士通株式会社 ,  佐藤 忠弘 ,  安達 明文

Inventor： 佐藤 忠弘 ,  安達 明文

IPC: H04J3/00

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

Abstract: 　受信したフレームは、共通パイロット信号の利得制御系統（２０Ａ）と、個別のデータ信号の利得制御系統（２０Ｂ）に２分岐される。利得制御系統（２０Ａ）は、共通パイロット信号の利得を利得制御し、利得制御系統（２０Ｂ）は、データ信号の利得を利得制御する。信号処理部（３０）は、フレームの同期をとり、共通パイロット信号の利得が一定となる利得制御信号（ｇ１）を共通パイロット信号の利得制御回路（２１ａ）に出力し、また、データ信号の利得が一定となる利得制御信号（ｇ２）をデータ信号の利得制御回路（２１ｂ）に出力する。利得が一定に制御されることにより、ＡＤＣ（２６ａ，２６ｂ，２７ａ，２７ｂ）の飽和やＳ／Ｎ劣化を防ぐ。

Abstract translation: 接收的帧被分支到公共导频信号增益控制系统（20A）和单个数据信号增益控制系统（20B）。 当增益控制系统（20B）增益控制数据信号的增益时，增益控制系统（20A）增益控制公共导频信号的增益。 信号处理器（30）与帧执行同步，输出用于使公共导频信号的增益恒定的公共导频信号增益控制电路（21a）的增益控制信号（g1），并输出增益控制信号（g2 ），用于使数据信号的增益恒定到数据信号增益控制电路（21b）。 由于增益被控制为恒定，因此可以防止ADC（26a，26b，27a，27b）的饱和和S / N劣化。

公开(公告)号：WO2004047411A1

公开(公告)日：2004-06-03

申请号：PCT/US2003/036129

申请日：2003-11-14

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： OZLUTURK, Fatih ,  KAZAKEVICH, Leonid ,  HAQUE, Tanbir ,  DEMIR, Alpaslan ,  NARAYAN, Geetha, Lakshmi ,  KEARNEY, Kenneth

IPC: H04M1/00

CPC classification number: H03G3/001 ,  H03D3/008 ,  H03D3/009 ,  H03G3/3068 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307 ,  H03G2201/508 ,  H04B1/30 ,  H04L2027/0016 ,  H04L2027/0024

Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component (105) tolerances of an analog radio (100), a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (110) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency parameters.

Abstract translation: 为了补偿由模拟无线电（100）的低成本模拟无线电组件（105）容差导致的性能下降，未来的系统架构（FSA）无线通信收发机采用多种数字信号处理技术来补偿这样的缺陷 模拟组件，使现代规格可以放松。 在数字域中提供自动增益控制（110）功能，以提供增强的相位和幅度补偿以及许多其他射频参数。

公开(公告)号：WO2003017468A2

公开(公告)日：2003-02-27

申请号：PCT/US2002/025349

申请日：2002-08-12

Applicant: HARRIS CORPORATION

Inventor： POGGI, Peter, John ,  DITTMER, Timothy ,  CABRERA, George

IPC: H03F

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: 响应于电路的一个或多个操作条件，通过使用查找表来动态控制到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，并确定要应用于放大器的输入信号的放大量。 本发明的一个实施例包括电视发射机电路，该电视发射机电路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来动态控制施加到输入信号的放大量，作为 输入信号的频率。

公开(公告)号：WO2016166039A1

公开(公告)日：2016-10-20

申请号：PCT/EP2016/057872

申请日：2016-04-11

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： ALRIKSSON, Peter ,  AXMON, Joakim

IPC: 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 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：WO2006071932A3

公开(公告)日：2007-05-03

申请号：PCT/US2005047242

申请日：2005-12-28

Applicant: MICROTUNE TEXAS LP ,  HENNIG ANDREAS

Inventor： HENNIG ANDREAS

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/706

Abstract: 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.

Abstract translation: 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：WO2006071932A2

公开(公告)日：2006-07-06

申请号：PCT/US2005/047242

申请日：2005-12-28

Applicant: MICROTUNE (TEXAS), L.P. ,  HENNIG, Andreas

Inventor： HENNIG, Andreas

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/706

Abstract: 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.

Abstract translation: 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：WO2002076057A1

公开(公告)日：2002-09-26

申请号：PCT/US2002/008406

申请日：2002-03-18

Applicant: CONEXANT SYSTEMS, INC.

Inventor： RAMACHANDRAN, Balasubramanian

IPC: H04L27/30

CPC classification number: H04W52/267 ,  H03G3/004 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/307 ,  H03G2201/40 ,  H03G2201/508 ,  H04B1/109 ,  H04L1/0001 ,  H04W52/08 ,  H04W52/38

Abstract: A dynamically varying linearity system "DVLS" (102) capable of varying the linearity of a radio frequency (RF) front-end (112) of a communication device (100) responsive to receiving a condition signal indicating a desired mode of operation of a transmitter (112). The DVLS may include a condition signal indicative of the desired mode of operation and a controller (110) that adjusts the linearity of the transmitter responsive to the condition signal. The condition signal may be responsive to a user interface (106). The controller, responsive to the condition signal, may dynamically adjust the operating current of the transmitter.

Abstract translation: 一种动态变化的线性系统“DVLS”（102），其能够响应于接收到指示期望的操作模式的条件信号而改变通信设备（100）的射频（RF）前端（112）的线性度 发射机（112）。 DVLS可以包括指示期望的操作模式的条件信号和响应于条件信号来调整发射机的线性度的控制器（110）。 条件信号可以响应于用户界面（106）。 控制器响应于条件信号，可以动态地调整发射机的工作电流。