中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

8 records (took 0.074 seconds)

    High efficiency switched gain power amplifier
    1.
    发明专利
    High efficiency switched gain power amplifier 审中-公开
    高效开关增益放大器

    公开(公告)号：JP2010183641A

    公开(公告)日：2010-08-19

    申请号：JP2010098898

    申请日：2010-04-22

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： KAUFMANN RALF ,  HUNZEKER DARIN ,  CAMARILLO RICHARD J

    IPC: H03F1/02 ,  H03F3/24 ,  H03F1/14 ,  H03F3/60 ,  H03F3/68 ,  H03F3/72 ,  H03G1/00 ,  H04B1/04 ,  H04Q7/32

    CPC classification number: H03F3/72 ,  H03F3/602 ,  H03F2203/7231 ,  H03F2203/7239 ,  H03G1/0088

    Abstract: PROBLEM TO BE SOLVED: To enhance efficiency in using power amplifier.
    SOLUTION: A power amplifier circuit device includes a driver amplifier, a switch, an amplifier path having a band pass filter and a power amplifier, and a bypass path which bypasses the power amplifier when excess gain and output power are not needed. When an RF-analog signal from the driver amplifier is switched to the amplifier path, the signal is band-pass filtered and amplified. Then the signal is split into an in-phase signal and a quadrature signal. Either the in-phase or quadrature signal is inverted and summed with the other in-phase or quadrature signal, and the summed signal is transmitted to an output port. When the RF-signal from the driver amplifier is switched to the bypass path, the power amplifier is turned off and the bypass path directs the signal to the output of the power amplifier, which appears as a high impedance to the signal. The signal is reflected from the power amplifier to the output port.
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提高使用功率放大器的效率。 解决方案：功率放大器电路器件包括驱动器放大器，开关，具有带通滤波器的放大器路径和功率放大器，以及当不需要过量增益和输出功率时旁路功率放大器的旁路路径。 当来自驱动放大器的RF模拟信号切换到放大器路径时，该信号被带通滤波和放大。 然后将信号分成同相信号和正交信号。 同相或正交信号被反相并与另一个同相或正交信号相加，并且相加的信号被发送到输出端口。 当来自驱动放大器的RF信号被切换到旁路路径时，功率放大器关闭，并且旁路路径将信号引导到功率放大器的输出端，功率放大器的输出显示为信号的高阻抗。 信号从功率放大器反射到输出端口。 版权所有（C）2010，JPO＆INPIT

    HIGH EFFICIENCY SWITCHED GAIN POWER AMPLIFIER
    2.
    发明专利
    HIGH EFFICIENCY SWITCHED GAIN POWER AMPLIFIER 未知

    公开(公告)号：CA2345089A1

    公开(公告)日：2000-03-30

    申请号：CA2345089

    申请日：1999-09-22

    Applicant: QUALCOMM INC

    Inventor： KAUFMAN RALPH ,  HUNZEKER DARIN ,  CAMARILLO RICHARD J

    IPC: H03F3/24 ,  H03F1/02 ,  H03F3/60 ,  H03F3/72 ,  H03G1/00 ,  H04B1/04 ,  H04Q7/32

    Abstract: A power amplifier circuit arrangement including a driver amplifier, a switch , an amplifier path having a band pass filter and a power amplifier, and a bypass path which bypasses the power amplifier when excess gain and output power are not needed. When an RF-analog signal from the driver amplifier is switched to the amplifier path, the signal is band-pass filtered and amplified. Then the signal is split into an in-phase and a quadrature signal . Either the in-phase or the quadrature signal is inverted and summed with the other of the in-phase or quadrature signal, and the summed signal is transmitted to an output port. When the RF-signal from the driver amplified is switched to the bypass path, the power amplifier is turned off and the bypas s path directs the signal to the output of the power amplifier, which appears as a high impedance to the signal. The signal reflects off the power amplifier to the output port.

    7.
    发明专利
    未知

    公开(公告)号：AT487274T

    公开(公告)日：2010-11-15

    申请号：AT07004546

    申请日：1999-09-22

    Applicant: QUALCOMM INC

    Inventor： KAUFMAN RALPH ,  HUNZEKER DARIN ,  CAMARILLO RICHARD

    IPC: H03F3/24 ,  H03F3/72 ,  H03F1/02 ,  H03F1/14 ,  H03F3/60 ,  H03F3/68 ,  H03G1/00 ,  H04B1/04 ,  H04Q7/32

    Abstract: A power amplifier arrangement comprises a power amplifier (32), an output circulator (55), a bypass path (30) and switches (20,43) for selecting either the power amplifier path or the bypass path. The arrangement comprises furthermore a resistor (45). If the power amplifier path is selected, the resistor (45) absorbs signals originating from the output (54), e.g. due to load mismatch. If the bypass path is selected, the power amplifier (32) provides a high output impedance to the circulator (55) in order to reflect the signal which is applied to the circulator through the bypass path. SAXD.

Patent Agency Ranking