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    • 6. 发明授权
    • Radiofrequency signal power amplification method and device
    • 射频信号功率放大方法及装置
    • US08242845B2
    • 2012-08-14
    • US12841803
    • 2010-07-22
    • Didier BelotLaurent LeyssenneEric KerherveYann Deval
    • Didier BelotLaurent LeyssenneEric KerherveYann Deval
    • H03G3/10
    • H03F3/245H03F1/0266H03F1/0272H03F2200/102H03F2200/451
    • A radiofrequency signal power amplification circuit may include a signal input for receiving the radiofrequency signal, an amplification stage coupled to the signal input and having at least one power transistor, a biasing stage for delivering a bias voltage to the amplification stage, and a processing stage. The processing stage may include a processing input coupled to the signal input, a processing output for delivering a bias current modulated at least in amplitude to the biasing stage, and an amplitude modulator coupled between the processing input and the processing output and configured to determine an envelope signal representative of the envelope of the radiofrequency signal, for modulating the amplitude of the envelope signal based on a variable voltage setpoint and for generating the amplitude-modulated bias current based on the modulated envelope signal.
    • 射频信号功率放大电路可以包括用于接收射频信号的信号输入,耦合到信号输入并具有至少一个功率晶体管的放大级,用于将偏置电压传送到放大级的偏置级,以及处理级 。 处理阶段可以包括耦合到信号输入的处理输入,用于将至少以幅度调制的偏置电流传送到偏置级的处理输出以及耦合在处理输入和处理输出之间的幅度调制器,并被配置为确定 信号代表射频信号的包络线,用于基于可变电压设定点调制包络信号的幅度,并且用于基于经调制的包络信号产生幅度调制的偏置电流。
    • 7. 发明申请
    • Phase-Shifting Device for Antenna Array
    • 天线阵相移装置
    • US20120163425A1
    • 2012-06-28
    • US13328412
    • 2011-12-16
    • Mathieu EgotJonathan MullerAndreia CathelinDidier Belot
    • Mathieu EgotJonathan MullerAndreia CathelinDidier Belot
    • H04L27/04H04L5/16
    • H01Q3/26
    • Device comprising processing means (MT), transmission channels (VE1, . . . VEn), an antenna array for transmitting signals comprising a number of antennas (A11 . . . A1n) respectively associated with the transmission channels, a number of digital-analogue converters (DAC) and a number of phase-shifting means (MD1, . . . MDn) respectively associated with the antennas, said phase-shifting means (MD1, . . . MDn) being placed between the processing means (MT) and the digital-analogue converters (DAC) and including digital all-pass filters of FIR type (PT), the processing means comprising control means (MC) configured to adjust the coefficients and/or the order of the all-pass filters of FIR type.
    • 包括处理装置(MT),传输信道(VE1,...,VEn)的装置,用于发送包括分别与传输信道相关联的多个天线(A11 ... A1n)的信号的天线阵列,数字模拟 分别与天线相关联的多个转换器(DAC)和多个移相装置(MD1,...,MDn),所述移相装置(MD1,...,MDn)被放置在处理装置(MT)和 数字模拟转换器(DAC)并且包括FIR类型(PT)的数字全通滤波器,所述处理装置包括被配置为调整FIR类型的全通滤波器的系数和/或顺序的控制装置(MC)。