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267 条记录 (耗时 0.014 秒)

    CIRCUIT AND METHOD FOR AUTOMATIC GAIN CONTROL
    93.
    发明授权
    CIRCUIT AND METHOD FOR AUTOMATIC GAIN CONTROL 有权
    电路和方法用于自动增益控制

    公开(公告)号：EP1894301B1

    公开(公告)日：2012-04-25

    申请号：EP06721723.2

    申请日：2006-03-29

    申请人： Icera Canada ULC

    发明人： MANKU, Tajinder

    IPC分类号： H03G3/30 ,  H04W52/52

    CPC分类号： H04W52/52 ,  H03G3/3042 ,  H04B2001/0416

    摘要： A system for generating a supply voltage, temperature and process compensated gain control voltage from a digital data word. In particular, the compensated gain voltage control voltage maintains a linear relationship between a change in gain in response to an input gain control voltage for a gain circuit of a transmitter circuit. A monitor circuit senses at least one of the supply voltage, temperature and process parameters, and generates a first set of digital signals corresponding to the sensed parameter. A digital compensator circuit converts the input gain control voltage into a second set of digital signals, and decodes the combined first and second set of digital signals to provide a data word. The data word is converted into an analog voltage representing the compensated gain voltage control voltage. The digital compensator circuit includes a table of compensation values, each accessible by a distinct combination of the first and second set of digital signals.

    Method and apparatus for adjusting transmission power of a CDMA terminal
    95.
    发明公开
    Method and apparatus for adjusting transmission power of a CDMA terminal 审中-公开

    公开(公告)号：EP2296415A2

    公开(公告)日：2011-03-16

    申请号：EP10012489.0

    申请日：1999-03-16

    申请人： Nec Corporation

    发明人： Masaki, Ichihara

    IPC分类号： H04W52/52

    CPC分类号： H04W52/367 ,  H04W52/362 ,  H04W52/52

    摘要： Variable gain circuits 16A and 16B are provided, respectively, on an output side of spreading circuits 15A and 15B disposed for each code channel, and after the outputs from the variable gain circuits 16A and 16B are added by adders 17 and 18, orthogonal modulation is applied to the outputs by a modulator 20, and a transmission signal is obtained. Furthermore, a variable gain circuit 22 for adjusting a level of the transmission signal is provided. An adjustment of average transmission power of the code channels is conducted by the variable gain circuit 22, and an individual adjustment is conducted by the variable gain circuits 16A and 16B.

    Optimising operating temperature in a power amplifier
    96.
    发明公开
    Optimising operating temperature in a power amplifier 审中-公开
    在einemStromverstärker的Optimierung der Temperatur

    公开(公告)号：EP2270976A1

    公开(公告)日：2011-01-05

    申请号：EP10167927.2

    申请日：2010-06-30

    申请人： Vodafone Group PLC ,  Vodafone España, S.A.U.

    发明人： Arranz Arauzo, Miguel ,  Gomez Coloma, Alberto ,  Güemes Cabrejas, Inigo

    IPC分类号： H03F1/52 ,  H03F3/24 ,  H03G3/30 ,  H04W52/52 ,  H04W52/34 ,  H04W24/00

    CPC分类号： H03F1/52 ,  H03F3/24 ,  H03F2200/447 ,  H03F2200/468 ,  H04W24/04 ,  H04W52/36

    摘要： Method and system for optimising operating temperature in a power amplifier (3) of a base station (2) of a cellular telecommunications network. The system comprises:
    - a power amplifier (3) of a BTS (2), the power amplifier configured for:
    • measuring its operating temperature;
    • if the operating temperature exceeds a temperature threshold T TH , sending an alarm message to a controller unit (1);

    - the controller unit (1), which can be included in the BTS (2) or in the corresponding BSC or RNC, configured for analyzing the alarm messages received and, when determined conditions are met, executing at least one action from a list of actions to reduce the dissipated power of the power amplifier (3).

    摘要翻译： 用于优化蜂窝电信网络的基站（2）的功率放大器（3）中的操作温度的方法和系统。 该系统包括： - BTS（2）的功率放大器（3），功率放大器被配置为： - 测量其工作温度; ¢如果工作温度超过温度阈值T TH，则向控制器单元（1）发送报警消息; - 可以包括在BTS（2）或相应的BSC或RNC中的控制器单元（1），其被配置用于分析接收的警报消息，并且当确定的条件被满足时，从列表中执行至少一个动作 降低功率放大器（3）耗散功率的动作。

    Wireless communication unit and power control system thereof
    97.
    发明公开
    Wireless communication unit and power control system thereof 有权
    Drahtlose Kommunikationseinheit und Leistungsregelungssystemdafür

    公开(公告)号：EP2259640A2

    公开(公告)日：2010-12-08

    申请号：EP10174119.7

    申请日：2004-12-23

    申请人： Freescale Semiconductor, Inc.

    发明人： Pratt, Patrick ,  Milyard, Michael ,  Schwartz, Daniel B ,  Warder, Philip C

    IPC分类号： H04W52/52 ,  H03G3/30

    CPC分类号： H04W52/52 ,  H03G3/3047

    摘要： A wireless communication unit (100) comprises a transmitter having an analogue feedback power control loop having a power control function (132) arranged to set an output power level of the transmitter. The power control function (132) comprises a predictor sub-system (200) arranged to reduce sensitivity to loop latency of the analogue feedback power control loop.
    The use of a predictor sub-system provides reduced sensitivity to loop latency, gain variations and delay.

    摘要翻译： 无线通信单元（100）包括具有模拟反馈功率控制环路的发射机，该模拟反馈功率控制环路具有设置成设置发射机的输出功率电平的功率控制功能（132）。 功率控制功能（132）包括预测器子系统（200），其被布置为降低对模拟反馈功率控制回路的环路延迟的灵敏度。 使用预测器子系统可以降低环路延迟，增益变化和延迟的灵敏度。

    Method and apparatus for adjusting transmission power of a CDMA terminal
    98.
    发明公开
    Method and apparatus for adjusting transmission power of a CDMA terminal 有权
    一种用于在CDMA设备控制发射功率的方法和设备

    公开(公告)号：EP1630971A3

    公开(公告)日：2010-10-06

    申请号：EP05023249.5

    申请日：1999-03-16

    申请人： NEC Corporation

    发明人： Masaki, Ichihara

    IPC分类号： H04W52/52

    CPC分类号： H04W52/367 ,  H04W52/362 ,  H04W52/52

    摘要： Variable gain circuits 16A and 16B are provided, respectively, on an output side of spreading circuits 15A and 15B disposed for each code channel, and after the outputs from the variable gain circuits 16A and i6B are added by adders 17 and 18, orthogonal modulation is applied to the outputs by-a modulator 20, and a transmission signal is obtained. Furthermore, a variable gain circuit 22 for adjusting a level of the transmission signal is provided. An adjustment of average transmission power of the code channels is conducted by the variable gain circuit 22, and an individual adjustment is conducted by the variable gain circuits 16A and 16B.

    ADAPTIVE POWER CONTROL FOR A SPREAD SPECTRUM TRANSMITTER
    100.
    发明公开
    ADAPTIVE POWER CONTROL FOR A SPREAD SPECTRUM TRANSMITTER 失效
    用于传播频谱发射机的自适应功率控制

    公开(公告)号：EP0515610A4

    公开(公告)日：1993-06-09

    申请号：EP92900295

    申请日：1991-11-14

    申请人： SCS MOBILECOM, INC.

    发明人： SCHILLING, DONALD, L.

    IPC分类号： H04B1/707 ,  H04B1/7075 ,  H04B7/005 ,  H04W52/14 ,  H04W52/22 ,  H04W52/24 ,  H04W52/52 ,  H04K1/00

    CPC分类号： H04W52/221 ,  H04B1/707 ,  H04B1/7075 ,  H04W52/146 ,  H04W52/225 ,  H04W52/228 ,  H04W52/245 ,  H04W52/246 ,  H04W52/52

    摘要： An apparatus for adaptive-power control of a spread-spectrum transmitter of a mobile station operating in a cellular-communications network using spread-spectrum modulation. A base station transmits a generic spread-spectrum signal and an APC information-data signal. A mobile station has an acquisition circuit (101, 102, 103) for acquiring and decoding the generic spread-spectrum signal, a detector (104) for detecting a received power level of the generic spread-spectrum signal, a decoder (105) for decoding the APC-data signal as a threshold, a differential amplifier (106) for generating a comparison signal by comparing the received power level to the threshold, a transmitter (112) for transmitting a transmitter spread-spectrum signal, an antenna, and a variable-gain device (111) responsive to the comparison signal indicating an increase or decrease for adjusting a transmitter-power level of the transmitter spread-spectrum signal.