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    • 3. 发明申请
    • CONTROL SYSTEM FOR A POWER AMPLIFIER
    • 功率放大器的控制系统
    • WO2013053557A1
    • 2013-04-18
    • PCT/EP2012/067779
    • 2012-09-12
    • ASTRIUM LIMITEDGOSS, Martin
    • GOSS, Martin
    • H03F1/32H03F1/34
    • H03G1/0017H03F1/3241H03F1/3247H03F1/3282H03F1/345H03F3/19H03F3/21H03F2200/405H03F2200/438H03F2200/451H03F2200/66H03F2201/3233
    • An apparatus for controlling the gain and phase of an input signal input to a power amplifier comprises a gain control loop configured to control the gain of the input signal based on power levels of the input signal and an amplified signal output by the power amplifier, to obtain a predetermined gain of the amplified signal, and a phase control loop configured to obtain an error signal related to a phase difference between a first signal derived from the input and a second signal derived from the amplified signal, and control the phase based on the error signal, to obtain a predetermined phase of the amplified signal. The phase control loop is arranged to delay the first signal before obtaining the error signal, such that the delayed first signal and the second signal used to obtain the error signal correspond to the same part of the input signal. The gain control loop may compare a power of a third signal derived from the input signal and a power of a fourth signal derived from the amplified signal. The third and fourth signals may be output by first and second couplers, which may have coupling factors that are selected such that the third and fourth signals have the same power level when the amplified signal has the predetermined gain. The current gain and phase of the amplified signal may be dependent on an operational history of the power amplifier, which may be a GaN power amplifier, and the apparatus and power amplifier may be included in a satellite. In another embodiment, a satellite includes a power amplifier control system that uses a feed-forward control loop to control both the gain and phase of a signal input to the power amplifier.
    • 用于控制输入到功率放大器的输入信号的增益和相位的装置包括:增益控制回路,被配置为基于输入信号的功率电平和由功率放大器输出的放大信号来控制输入信号的增益, 获得放大信号的预定增益,以及相位控制回路,其被配置为获得与从输入导出的第一信号和从放大信号导出的第二信号之间的相位差相关的误差信号,并且基于 误差信号,以获得放大信号的预定相位。 相位控制环路被布置成在获得误差信号之前延迟第一信号,使得用于获得误差信号的延迟的第一信号和第二信号对应于输入信号的相同部分。 增益控制环路可以比较从输入信号导出的第三信号的功率和从放大信号导出的第四信号的功率。 第三和第四信号可以由第一和第二耦合器输出,第一和第二耦合器可以具有选择的耦合因子,使得当放大的信号具有预定的增益时,第三和第四信号具有相同的功率电平。 放大信号的当前增益和相位可以取决于功率放大器的操作历史,功率放大器可以是GaN功率放大器,并且该装置和功率放大器可以被包括在卫星中。 在另一个实施例中,卫星包括功率放大器控制系统,其使用前馈控制环来控制输入到功率放大器的信号的增益和相位。
    • 4. 发明申请
    • A RADIO SYSTEM AND A METHOD FOR RELAYING PACKETIZED RADIO SIGNALS
    • 无线电系统和用于中继封装无线电信号的方法
    • WO2010112364A1
    • 2010-10-07
    • PCT/EP2010/053713
    • 2010-03-22
    • UBIDYNE INC.KENINGTON, Peter
    • KENINGTON, Peter
    • H03F1/32H04B7/06H04B17/00H01Q3/26
    • H01Q3/267H03F1/3247H03F1/3282H04B7/063H04B17/21
    • The present invention provides a radio system (1) and a method (800) for relaying packetized radio signals. The radio system (1) comprises at least one transmit path (70-1, 70-2,..., 70-N), a base band calibration signal generator (220B) for generating a base band calibration signal (222B), a digital predistortion unit (300), a calibration unit (200) and a feedback path (400). The feedback path (400) is commonly used by the digital predistortion unit (300) and the calibration unit (200) for feeding back a feedback signal (90F). The feedback signal (90F) is adapted to update at least one of phase and amplitude changes (210-1, 210-2,..., 210-N) and the digital predistortion (310-1, 310-2,..., 310-N). The present invention further relates to a method (800) for relaying packetized radio signals. The method (800) is capable of updating (870) the digital predistortion (310-1, 310-2,..., 310-N) as well as adapted for an updating (880) of the phase and amplitude changes (210-1, 210-2,..., 210-N). The updating (870) of the digital predistortion (310-1, 310-2,..., 310-N) and the updating (880) of the phase and amplitude changes (210-1, 210-2,..., 210-N) is implemented using the feedback signal (90F). The present invention further relates to a computer program product for the manufacture of the radio system (1). The present invention further relates to a computer program product for the execution of the method (800).
    • 本发明提供一种用于中继分组化无线电信号的无线电系统(1)和方法(800)。 无线电系统(1)包括至少一个发射路径(70-1,70-2,...,70-N),用于产生基带校准信号(222B)的基带校准信号发生器(220B) 数字预失真单元(300),校准单元(200)和反馈路径(400)。 反馈路径(400)通常由数字预失真单元(300)和校准单元(200)用于反馈反馈信号(90F)。 反馈信号(90F)适于更新相位和幅度变化(210-1,210-2,...,210-N)和数字预失真(310-1,310-2,...)中的至少一个。 ,310-N)。 本发明还涉及一种用于中继分组化无线电信号的方法(800)。 方法(800)能够更新(870)数字预失真(310-1,310-2,...,310-N)以及适于更新(880)相位和幅度变化(210 -1,210-2,...,210-N)。 数字预失真(310-1,310-2,...,310-N)的更新(870)和相位和幅度变化的更新(880)(210-1,210-2,...) ,210-N)使用反馈信号(90F)来实现。 本发明还涉及一种用于制造无线电系统(1)的计算机程序产品。 本发明还涉及一种用于执行方法(800)的计算机程序产品。
    • 8. 发明申请
    • RF POWER AMPLIFIER SYSTEM EMPLOYING AN ANALOG PREDISTORTION MODULE USING ZERO CROSSINGS
    • 使用零交叉使用模拟预测模块的射频功率放大器系统
    • WO2006102278A1
    • 2006-09-28
    • PCT/US2006/010133
    • 2006-03-20
    • POWERWAVE TECHNOLOGIES, INC.BRAITHWAITE, Richard, Neil
    • BRAITHWAITE, Richard, Neil
    • H03F1/26
    • H03F1/3282
    • An RF amplifier system (100) employing an analog predistortion module (112) is disclosed. The disclosed analog predistortion module (112) is based on zero crossings of the gain error curves (AM-AM and AM-PM curves minus DC). The hardware structure uses the product of first-order functions avoiding the need for a large dynamic range in the coefficients to shape the lower part of the gain curves. The higher-order nonlinear functions used for magnitude and phase corrections are preferably derived from a single envelope detector (300). An equal number of multipliers are preferably used in each path when the order of the magnitude and phase corrections are equal or differ by one, thus reducing delay mismatches between the magnitude and phase correction signals.
    • 公开了一种采用模拟预失真模块(112)的RF放大器系统(100)。 公开的模拟预失真模块(112)基于增益误差曲线(AM-AM和AM-PM曲线减去DC)的过零点。 硬件结构使用一阶函数的乘积,避免了系数中的大动态范围的需要,以形成增益曲线的下部。 用于幅度和相位校正的较高阶非线性函数优选地从单个包络检测器(300)导出。 当幅度和相位校正的顺序相等或相差1时,优选地在每个路径中使用相等数量的乘法器,从而减小幅度和相位校正信号之间的延迟失配。
    • 10. 发明申请
    • 送信装置
    • 发射器装置
    • WO2005015756A1
    • 2005-02-17
    • PCT/JP2004/010680
    • 2004-07-21
    • 松下電器産業株式会社宇田川 昌治荒屋敷 護
    • 宇田川 昌治荒屋敷 護
    • H04B1/04
    • H03F3/24H03F1/02H03F1/0205H03F1/3241H03F1/3247H03F1/3282H04B1/0475H04B14/008
    • 本発明の課題は、ポーラー変調送信機等の送信装置において、振幅信号と位相信号の同期の調整を自動的に行えるようにすることである。 ポーラー信号発生回路(101)は、入力信号から送信変調波の振幅と位相に対応する信号を生成し、乗算回路(107)において、振幅信号と位相信号とを乗算することにより、位相変調波を振幅変調して送信変調波を生成し、これをアンテナ(108)から電波として放射する。振幅位相検出回路(109)は、乗算回路(107)の入力及び位相変調信号生成回路(106)の入力から振幅信号と位相信号を検出し、遅延差算出回路(110)により、検出した振幅と位相の各信号からそれぞれの相関関数を計算し、それらの極大値から遅延差を算出する。そして、タイミング調整回路(102)において、算出した遅延差に基づいて振幅信号と位相信号の遅延時間を調整することで、タイミング調整を行う。
    • 在诸如极性调制发射机的发射机设备中,可以自动调整振幅信号和相位信号之间的同步。 极性信号发生器电路(101)根据输入信号产生与被发送的调制波形的幅度和相位对应的信号。 乘法电路(107)将振幅信号乘以相位信号,从而对相位调制波形进行幅度调制,以提供作为无线电波从天线(108)辐射的要发送的调制波形。 振幅/相位检测电路(109)检测来自乘法电路(107)的输入端和相位调制信号产生电路(106)的幅度和相位信号。 延迟差计算电路(110)从相应的检测到的幅度和相位信号计算相关函数,以从其最大值计算延迟差。 定时调整电路(102)根据计算出的延迟差调整幅度和相位信号的延迟时间,从而进行定时调整。