公开(公告)号：WO2004062088A2

公开(公告)日：2004-07-22

申请号：PCT/US2003/038892

申请日：2003-12-05

Applicant: MOTOROLA INC.

Inventor： MIDYA, Pallab ,  GROSSPIETSCH, John ,  WASHINGTON, Michael

IPC: H03F

CPC classification number: H03F3/211 ,  H03F1/0222 ,  H03F1/0277 ,  H03G3/004

Abstract: A power amplifier circuit for receiving a variable envelope input signal and for producing an amplified output signal is provided. The power amplifier circuit includes an envelope approximation circuit, an envelope amplifier circuit, a phasor approximation circuit, a quadrature modulation circuit, and a power amplifier. The envelope approximation circuit receives the variable envelope input signal and produces a bandlimited estimated envelope signal, corresponding to the amplitude of the variable envelope input signal. The bandlimited estimated envelope signal is then amplified by an envelope amplifier circuit. The amplified envelope signal is then coupled to the supply input of the power amplifer. The phasor approximation circuit receives the variable envelope input signal and produces a bandlimited estimated phasor signal. The quadrature modulation circuit receives the estimated phase signal and produces a modulated phase signal. The modulated phase signal is then coupled to the signal input of the power amplifier. The power amplifier then produces an amplified output signal.

Abstract translation: 提供了用于接收可变包络输入信号并用于产生放大的输出信号的功率放大器电路。 功率放大器电路包括包络近似电路，包络放大器电路，相量近似电路，正交调制电路和功率放大器。 包络近似电路接收可变包络输入信号并产生对应于可变包络输入信号的振幅的带限估计包络信号。 带限估计包络信号然后由包络放大器电路放大。 然后放大的包络信号被耦合到功率放大器的电源输入端。 相量近似电路接收可变包络输入信号并产生带限估计相量信号。 正交调制电路接收估计的相位信号并产生调制的相位信号。 然后调制后的相位信号被耦合到功率放大器的信号输入端。 功率放大器然后产生放大的输出信号。

公开(公告)号：EP1581994A2

公开(公告)日：2005-10-05

申请号：EP03796778.3

申请日：2003-12-05

Applicant: MOTOROLA, INC.

Inventor： MIDYA, Pallab ,  GROSSPIETSCH, John ,  WASHINGTON, Michael

IPC: H03F3/28

CPC classification number: H03F3/211 ,  H03F1/0222 ,  H03F1/0277 ,  H03G3/004

Abstract: A power amplifier circuit for receiving a variable envelope input signal and for producing an amplified output signal is provided. The power amplifier circuit includes an envelope approximation circuit, an envelope amplifier circuit, a phasor approximation circuit, a quadrature modulation circuit, and a power amplifier. The envelope approximation circuit receives the variable envelope input signal and produces a bandlimited estimated envelope signal, corresponding to the amplitude of the variable envelope input signal. The bandlimited estimated envelope signal is then amplified by an envelope amplifier circuit. The amplified envelope signal is then coupled to the supply input of the power amplifer. The phasor approximation circuit receives the variable envelope input signal and produces a bandlimited estimated phasor signal. The quadrature modulation circuit receives the estimated phase signal and produces a modulated phase signal. The modulated phase signal is then coupled to the signal input of the power amplifier. The power amplifier then produces an amplified output signal.