公开(公告)号：EP1583232A3

公开(公告)日：2007-07-18

申请号：EP05090077.8

申请日：2005-03-29

Applicant: NEC CORPORATION

Inventor： Ishihara, Takeshi, c/o NEC Corporation

IPC: H03G3/30 ,  H04B7/005

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: 一种自动增益控制装置，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定值。 控制单元根据预设的控制算法控制放大器的增益。 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的频率切换的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：EP1679792A3

公开(公告)日：2006-11-22

申请号：EP05251659.8

申请日：2005-03-18

Applicant: Microtune (Texas) L.P.

Inventor： Hennig, Andreas G.

IPC: H03G3/30

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分布相关联地操作。 第二放大器电路与第二增益分布相关联地操作。 接收器还包括确定与调制信号相关联的质量指示符的增益控制电路。 增益控制电路至少部分地基于所确定的质量指标来调整第一增益曲线和第二增益曲线。

公开(公告)号：EP1584169A4

公开(公告)日：2006-08-02

申请号：EP04703677

申请日：2004-01-20

Applicant: THOMSON LICENSING

Inventor： BOUILLET AARON ,  MAYER MATTHEW

IPC: H03G3/30 ,  H04L27/08

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

Abstract: 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 (140 and 150) are individually controlled by individual AGC control signals generated by an AGC controller (105) so that the level of the output signal from each of the RF AGC gain controllable amplifiers is individually optimized for tuner performance (170 and 190).

公开(公告)号：EP1583232A2

公开(公告)日：2005-10-05

申请号：EP05090077.8

申请日：2005-03-29

Applicant: NEC CORPORATION

Inventor： Ishihara, Takeshi, c/o NEC Corporation

IPC: H03G3/30

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.

公开(公告)号：JP2009182589A

公开(公告)日：2009-08-13

申请号：JP2008019026

申请日：2008-01-30

Applicant: Oki Semiconductor Co Ltd ,  Okiセミコンダクタ株式会社

Inventor： AKAHORI HIROTSUGU

IPC: H04B1/16 ,  H03G3/20 ,  H04B1/26

CPC classification number: H03G3/3068 ,  H03G2201/204 ,  H03G2201/206 ,  H03G2201/305 ,  H03G2201/307

Abstract: PROBLEM TO BE SOLVED: To provide an RF receiver capable of controlling the signal component of a desired channel at a proper level without saturating a high-frequency amplifying stage. SOLUTION: The RF receiver has an RF amplifying means amplifying a received high-frequency signal, a mixing means converting the output high-frequency signal of the RF amplifying means into an intermediate-frequency signal and an IF amplifying means amplifying the output intermediate-frequency signal of the mixing means. The RF receiver further has a first level detecting means detecting the signal level of the output high-frequency signal of the RF amplifying means, a second level detecting means detecting the signal level of the output intermediate-frequency signal of the mixing means and a third level detecting means detecting the signal level of the intermediate-frequency signal amplified by the IF amplifying means. The RF receiver further has an RF reference-level generating means generating an RF reference level on the basis of at least one of the detecting-signal levels of the first and second level detecting means and an RF-gain control means controlling the amplifying gain of the RF amplifying means so that a value corresponding to the detecting-signal level of the third level detecting means is equalized to the RF reference level. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种RF接收器，其能够在不使饱和高频放大级的情况下以适当的电平来控制期望信道的信号分量。 解决方案：RF接收机具有放大接收到的高频信号的RF放大装置，将RF放大装置的输出高频信号转换为中频信号的混合装置和放大输出的IF放大装置 混合装置的中频信号。 RF接收机还具有检测RF放大装置的输出高频信号的信号电平的第一电平检测装置，检测混频装置的输出中频信号的信号电平的第二电平检测装置和第三电平检测装置 检测由IF放大装置放大的中频信号的信号电平的电平检测装置。 RF接收机还具有基于第一和第二电平检测装置的检测信号电平中的至少一个产生RF参考电平的RF参考电平发生装置和控制第一和第二电平检测装置的放大增益的RF增益控制装置 RF放大装置使得与第三电平检测装置的检测信号电平对应的值与RF参考电平相等。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP4061503B2

公开(公告)日：2008-03-19

申请号：JP2004111692

申请日：2004-04-06

Applicant: ソニー株式会社

Inventor： 大和 岡信

IPC: H03G3/20 ,  H03G1/00 ,  H03G3/30 ,  H03G7/00 ,  H04B1/06 ,  H04B1/10 ,  H04B1/16 ,  H04B7/00 ,  H04B17/40

CPC classification number: H03G3/3068 ,  H03G1/0023 ,  H03G1/0088 ,  H03G7/001 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/506

公开(公告)号：JP2005295471A

公开(公告)日：2005-10-20

申请号：JP2004111692

申请日：2004-04-06

Applicant: Sony Corp ,  ソニー株式会社

Inventor： OKASHIN YAMATO

IPC: H03G3/20 ,  H03G1/00 ,  H03G3/30 ,  H03G7/00 ,  H04B1/06 ,  H04B1/10 ,  H04B1/16 ,  H04B7/00 ,  H04B17/40

CPC classification number: H03G3/3068 ,  H03G1/0023 ,  H03G1/0088 ,  H03G7/001 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/506

Abstract: PROBLEM TO BE SOLVED: To realize appropriate AGC for a desired wave signal and an interference wave signal. SOLUTION: There are provided attenuator circuits 42-44 cascade-connected to a received signal SRX and differential amplifiers 51-54 to which the received signal SRX and output signals of the attenuator circuits 42-44 are supplied, respectively. There are also provided resistors R55, R56 connected in common to output terminals of the differential amplifiers 51-54 so as to extract level-controlled output signals and a control current generating circuit 34 for generating control currents I51-I54 of predetermined characteristics from first and second AGC voltages VAGC, VOL. The control currents I51-I54 outputted from the control current generating circuit 34 are supplied to the differential amplifiers 51-54 as their operation switching and gain control signals. A control current Im equal to the control currents I51-I54 is negatively fed back by the control current generating circuit 34. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：为所需波信号和干扰波信号实现适当的AGC。 提供了分别与接收信号SRX和差分放大器51-54级联的衰减器电路42-44，差分放大器51-54分别向其提供接收信号SRX和衰减器电路42-44的输出信号。 还提供了电阻R55，R56共同连接到差分放大器51-54的输出端，以便提取电平控制的输出信号;以及控制电流产生电路34，用于产生从第一和第一预定特性的控制电流I51-154; 第二AGC电压VAGC，VOL。 从控制电流产生电路34输出的控制电流I51-I54作为其操作切换和增益控制信号被提供给差分放大器51-54。 与控制电流I51〜I54相等的控制电流Im1由控制电流产生电路34负反馈。（C）2006，JPO＆NCIPI

公开(公告)号：JP4419545B2

公开(公告)日：2010-02-24

申请号：JP2003411131

申请日：2003-12-10

Applicant: 日本電気株式会社

Inventor： 賢二 寺尾

IPC: H03G3/20 ,  H03G3/30 ,  H04B1/16 ,  H04B1/30 ,  H04B1/707 ,  H04B1/7097

CPC classification number: H03G3/3078 ,  H03G3/3068 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307

Abstract: In a slot format of a received signal, AGC gain update timings (t1 to t4) are shifted every time to disperse and reduce an influence of a noise attributable to a direct current component specific to direct conversion which is accompanied by AGC gain update. In particular, in the case where each of slots in the received signal includes an information portion (data) having a larger code correcting capability and an information portion having a smaller code correcting capability (TPC (transmission power control), TFCI (transport format combination indicator), PILOT), the AGC gain update timing is generated while being shifted in the former information portion, thereby reduce the influence of the noise. When the amount of shift of the AGC gain update timing is set to be larger than that of one symbol of the received signal, the influence of the noise accompanied by the AGC gain update is further reduced.

公开(公告)号：JP3841416B2

公开(公告)日：2006-11-01

申请号：JP2003348243

申请日：2003-10-07

Applicant: 松下電器産業株式会社

Inventor： 義博 原 ,  護 荒屋敷

IPC: H03F3/24 ,  H03G3/00 ,  H03F3/189 ,  H03G3/10 ,  H03G3/30 ,  H04B1/04

CPC classification number: H03F1/0222 ,  H03F1/02 ,  H03F3/189 ,  H03F3/24 ,  H03G3/004 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/307 ,  H03G2201/40 ,  H04B2001/045

公开(公告)号：JP2005286806A

公开(公告)日：2005-10-13

申请号：JP2004099582

申请日：2004-03-30

Applicant: Nec Corp ,  日本電気株式会社

Inventor： ISHIHARA TAKESHI

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: PROBLEM TO BE SOLVED: To provide an automatic gain control device and the automatic gain control method which converge control action in a stable state during a short period of time in changing frequency of a receiving radio signal which occurs at the time of a compressed mode of WCDMA (Wideband Code Division Multiple Access), etc.
SOLUTION: A memory device storing a gain setting value is installed in the automatic gain control device, in changing frequency of the receiving signal from a gain setting value stored in the past, the device predicts and calculates the optimal gain setting value corresponding to a frequency after the change is carried out. The changing over of the frequency is carried out using the gain setting value which is predicted and calculated.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种自动增益控制装置和自动增益控制方法，其在短时间内将控制动作在稳定状态下收敛，以改变在接收无线电信号发生时的接收无线电信号的频率 WCDMA（宽带码分多址）的压缩模式等。解决方案：存储增益设定值的存储装置安装在自动增益控制装置中，从存储在存储器中的增益设定值改变接收信号的频率 过去，设备预测并计算与执行改变之后的频率对应的最佳增益设置值。 使用预测和计算的增益设定值来进行频率的切换。 版权所有（C）2006，JPO＆NCIPI