公开(公告)号：WO2005022740A3

公开(公告)日：2005-03-10

申请号：PCT/IB2004/002631

申请日：2004-08-12

Applicant: NOKIA CORPORATION ,  NOKIA, INC. ,  RF MICRO DEVICES, INC. ,  KALAJO, Sami ,  JARVINEN, Esko ,  VINTOLA, Ville ,  TAMBORINO, Frank, Anthony ,  KOPP, William, Sheridan

Inventor： KALAJO, Sami ,  JARVINEN, Esko ,  VINTOLA, Ville ,  TAMBORINO, Frank, Anthony ,  KOPP, William, Sheridan

IPC: H01Q11/12

Abstract: An RF power amplifier module can be used without a matching device between the power amplifier module and an antenna. The power amplifier module is constructed and operated to detect, protect and maintain the performance of the power amplifier in the presence of severe VSWR load mismatches, without requiring the use of external circuitry. The RF power amplifier module includes integral detection circuitry for generating a first detection signal having a value that is indicative of the current flowing through an output power transistor and a second detection signal having a value that is indicative the voltage appearing at the output of the output power transistor, as well as integral compensation circuitry for controlling the generation of a plurality of bias current and bias voltage signals to have values that are a function of the values of the first and second detection signals, as well as the current output power level of the RF power amplifier module. Also included is an integral impedance matching circuit, coupled between the output of the output transistor and the output node,. that provides a variable impedance that is selectively controlled by an output signal from the compensation circuitry.

公开(公告)号：WO2005022740A2

公开(公告)日：2005-03-10

申请号：PCT/IB2004002631

申请日：2004-08-12

Applicant: NOKIA CORP ,  NOKIA INC ,  KALAJO SAMI ,  JARVINEN ESKO ,  VINTOLA VILLE

Inventor： KALAJO SAMI ,  JARVINEN ESKO ,  VINTOLA VILLE

IPC: H01Q11/12 ,  H03C1/62 ,  H03F20060101 ,  H03F1/02 ,  H03F1/56 ,  H03F3/191 ,  H03F3/24 ,  H03H7/40 ,  H03H11/30 ,  H04B1/04 ,  H04B17/00 ,  H03F

CPC classification number: H03F1/56 ,  H03F1/0261 ,  H03F1/0272 ,  H03F3/191 ,  H03F3/24 ,  H03F2200/207 ,  H03F2200/321 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2200/462 ,  H03F2200/471 ,  H03F2200/99 ,  H03H7/40 ,  H03H11/30 ,  H04B1/0458

Abstract: An RF power amplifier module can be used without a matching device between the power amplifier module and an antenna. The power amplifier module is constructed and operated to detect, protect and maintain the performance of the power amplifier in the presence of severe VSWR load mismatches, without requiring the use of external circuitry. The RF power amplifier module includes integral detection circuitry for generating a first detection signal having a value that is indicative of the current flowing through an output power transistor and a second detection signal having a value that is indicative the voltage appearing at the output of the output power transistor, as well as integral compensation circuitry for controlling the generation of a plurality of bias current and bias voltage signals to have values that are a function of the values of the first and second detection signals, as well as the current output power level of the RF power amplifier module. Also included is an integral impedance matching circuit, coupled between the output of the output transistor and the output node,. that provides a variable impedance that is selectively controlled by an output signal from the compensation circuitry.

Abstract translation: RF功率放大器模块可以在功率放大器模块和天线之间没有匹配装置的情况下使用。 在不需要使用外部电路的情况下，功率放大器模块被构造和操作以在存在严重的VSWR负载不匹配的情况下检测，保护和维持功率放大器的性能。 RF功率放大器模块包括积分检测电路，用于产生具有指示流过输出功率晶体管的电流的值的第一检测信号和具有指示出现在输出端的输出端的电压的值的第二检测信号 功率晶体管，以及用于控制多个偏置电流和偏置电压信号的产生的积分补偿电路，以具有作为第一和第二检测信号的值的函数的值以及当前的输出功率电平 RF功率放大器模块。 还包括耦合在输出晶体管的输出端和输出节点之间的积分阻抗匹配电路。 其提供由来自补偿电路的输出信号选择性地控制的可变阻抗。