Dynamically varying linearity system for an RF front-end of a communication device
    12.
    发明授权
    Dynamically varying linearity system for an RF front-end of a communication device 失效
    用于通信设备的RF前端的动态变化的线性系统

    公开(公告)号:US06674999B2

    公开(公告)日:2004-01-06

    申请号:US09811082

    申请日:2001-03-16

    Abstract: A dynamically varying linearity system “DVLS” capable of varying the linearity of a radio frequency (RF) front-end of a communication device responsive to receiving a condition signal indicating a desired mode of operation of a transmitter. The DVLS may include a condition signal indicative of the desired mode of operation and a controller that adjusts the linearity of the transmitter responsive to the condition signal. The condition signal may be responsive to a user interface. 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”,其能够响应于接收到指示发射机的所需操作模式的条件信号而改变通信设备的射频(RF)前端的线性度。 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。 条件信号可以响应于用户界面。 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。

    A SYSTEM AND METHOD FOR MINIMIZING DISSIPATION IN RF POWER AMPLIFIERS
    13.
    发明申请
    A SYSTEM AND METHOD FOR MINIMIZING DISSIPATION IN RF POWER AMPLIFIERS 审中-公开
    一种用于最小化射频功率放大器的系统和方法

    公开(公告)号:WO03017468A3

    公开(公告)日:2003-08-21

    申请号:PCT/US0225349

    申请日:2002-08-12

    Applicant: HARRIS CORP

    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.

    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(14)来动态地控制到电路中的放大器(10)的可变电源(12)。 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(11)的功率放大器电路,其中通过使用查找表作为输入信号的放大量被动态地控制 输入信号的频率的函数。

    METHOD AND APPARATUS FOR ACHIEVING LINEAR MONOTONIC OUTPUT POWER
    14.
    发明申请
    METHOD AND APPARATUS FOR ACHIEVING LINEAR MONOTONIC OUTPUT POWER 有权
    用于实现线性单色输出功率的方法和装置

    公开(公告)号:US20070229330A1

    公开(公告)日:2007-10-04

    申请号:US11626134

    申请日:2007-01-23

    CPC classification number: H03G3/3042 H03G2201/508 H04W52/146 H04W52/367

    Abstract: Techniques for achieving linear monotonic output power with piecewise non-linear and/or non-monotonic circuits are described. A coarse gain is selected for a first circuit having non-linear and/or non-monotonic characteristics. A fine gain is selected for a second circuit used to account for output power error due to the coarse gain. First and second look-up tables may store output power versus gain for the first and second circuits, respectively. An output power in the first look-up table may be selected based on the requested output power, and the gain corresponding to the selected output power may be provided as the coarse gain. An output power in the second look-up table may be selected based on the output power error, and the gain corresponding to the selected output power may be provided as the second gain.

    Abstract translation: 描述了用分段非线性和/或非单调电路实现线性单调输出功率的技术。 对具有非线性和/或非单调特性的第一电路选择粗增益。 对于用于考虑由于粗增益导致的输出功率误差的第二电路,选择精细增益。 第一和第二查找表可以分别存储第一和第二电路的输出功率与增益。 可以基于所请求的输出功率来选择第一查找表中的输出功率,并且可以将与所选择的输出功率相对应的增益提供为粗增益。 可以基于输出功率误差来选择第二查找表中的输出功率,并且可以将与所选输出功率相对应的增益提供为第二增益。

    Automatic gain control and antenna selection method for a radio communication system
    16.
    发明申请
    Automatic gain control and antenna selection method for a radio communication system 有权
    无线电通信系统的自动增益控制和天线选择方法

    公开(公告)号:US20040259511A1

    公开(公告)日:2004-12-23

    申请号:US10864193

    申请日:2004-06-09

    Abstract: The invention provides an automatic gain control and antenna selection method used in a receiver of a radio communication system. The received signal power is estimated by digital signal processing after analog-to-digital conversion in the system, in order to adjust the gain of the front end analog signal until the magnitude of the analog signal is adjusted to an optimum range of the digital signal processing. In addition, the ADC is utilized to estimate the signal power as the basis of the antenna selection.

    Abstract translation: 本发明提供一种在无线电通信系统的接收机中使用的自动增益控制和天线选择方法。 接收到的信号功率通过系统中模数转换后的数字信号处理来估计,以便调整前端模拟信号的增益,直到模拟信号的幅度被调整到数字信号的最佳范围 处理。 此外,ADC用于估计信号功率作为天线选择的基础。

    Dynamically varying linearity system for an RF front-end of a communicaton device
    17.
    发明申请
    Dynamically varying linearity system for an RF front-end of a communicaton device 失效
    用于通信设备的RF前端的动态变化的线性系统

    公开(公告)号:US20020159503A1

    公开(公告)日:2002-10-31

    申请号:US09811082

    申请日:2001-03-16

    Abstract: A dynamically varying linearity system nullDVLSnull capable of varying the linearity of a radio frequency (RF) front-end of a communication device responsive to receiving a condition signal indicating a desired mode of operation of a transmitter. The DVLS may include a condition signal indicative of the desired mode of operation and a controller that adjusts the linearity of the transmitter responsive to the condition signal. The condition signal may be responsive to a user interface. 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”,其能够响应于接收到指示发射机的所需操作模式的条件信号而改变通信设备的射频(RF)前端的线性度。 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。 条件信号可以响应于用户界面。 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。

    Method and apparatus for achieving linear monotonic output power
    18.
    发明授权
    Method and apparatus for achieving linear monotonic output power 有权
    用于实现线性单调输出功率的方法和装置

    公开(公告)号:US07933567B2

    公开(公告)日:2011-04-26

    申请号:US11626134

    申请日:2007-01-23

    CPC classification number: H03G3/3042 H03G2201/508 H04W52/146 H04W52/367

    Abstract: Techniques for achieving linear monotonic output power with piecewise non-linear and/or non-monotonic circuits are described. A coarse gain is selected for a first circuit having non-linear and/or non-monotonic characteristics. A fine gain is selected for a second circuit used to account for output power error due to the coarse gain. First and second look-up tables may store output power versus gain for the first and second circuits, respectively. An output power in the first look-up table may be selected based on the requested output power, and the gain corresponding to the selected output power may be provided as the coarse gain. An output power in the second look-up table may be selected based on the output power error, and the gain corresponding to the selected output power may be provided as the second gain.

    Abstract translation: 描述了用分段非线性和/或非单调电路实现线性单调输出功率的技术。 对具有非线性和/或非单调特性的第一电路选择粗增益。 对于用于考虑由于粗增益导致的输出功率误差的第二电路,选择精细增益。 第一和第二查找表可以分别存储第一和第二电路的输出功率与增益。 可以基于所请求的输出功率来选择第一查找表中的输出功率,并且可以将与所选择的输出功率相对应的增益提供为粗增益。 可以基于输出功率误差来选择第二查找表中的输出功率,并且可以将与所选输出功率相对应的增益提供为第二增益。

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