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    • 3. 发明申请
    • DEVICE FOR DYNAMIC IMPEDANCE MATCHING BETWEEN A POWER AMPLIFIER AND AN ANTENNA
    • 功率放大器与天线之间的动态阻抗匹配装置
    • WO2004010595A1
    • 2004-01-29
    • PCT/IB2003/003175
    • 2003-07-11
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.PIETIG, RainerKIEWITT, RainerMATTERS-KAMMERER, Marion, KorneliaPURR, Thomas
    • PIETIG, RainerKIEWITT, RainerMATTERS-KAMMERER, Marion, KorneliaPURR, Thomas
    • H04B1/04
    • H04B1/0458
    • A device for dynamic impedance matching between a power amplifier and an antenna, having a circulator (210), which routes a signal received from the power amplifier (10) at a first port via a second port to the antenna (30) and diverts the signal reflected at the antenna (30) and received at the second port through a third port; and a controllable matching network (24, 240, 250); is characterized in that a directional coupler (200) diverts a proportion of the signal traveling from the power amplifier (10) to the antenna (30), from which the magnitude and phase of the signal may be derived, to a signal detector (220); and the circulator (210) routes the entire signal reflected at the antenna (30) into the signal detector (220); wherein the signal detector (220) passes the magnitude and phase of both the signal traveling to the antenna (30) and the signal reflected at the antenna (30) to a controller (230), which evaluates the information received from the signal detector (220) in order to determine the present impedance value of the antenna (30) and to correct the controllable matching network (24, 240, 250) having active and passive components in accordance with the determined impedance value of the antenna (30).
    • 一种用于功率放大器和天线之间的动态阻抗匹配的装置,具有循环器(210),其将从功率放大器(10)接收的信号经由第二端口经由第二端口路由到天线(30),并且将 信号在天线(30)处反射并通过第三端口在第二端口处被接收; 和可控匹配网络(24,240,250); 定向耦合器(200)将从功率放大器(10)传播的信号的一部分转移到信号的幅度和相位可以从其导出的天线(30)到信号检测器(220) ); 并且环行器(210)将在天线(30)处反射的整个信号路由到信号检测器(220)中; 其中信号检测器(220)将行进到天线(30)的信号和在天线(30)处反射的信号的幅度和相位传递到控制器(230),控制器(230)评估从信号检测器 220),以便确定天线(30)的当前阻抗值,并且根据所确定的天线(30)的阻抗值来校正具有有源和无源分量的可控匹配网络(24,240,250)。