Switch-mode amplifier
    25.
    发明公开
    Switch-mode amplifier 有权
    开关放大器

    公开(公告)号:EP2852051A3

    公开(公告)日:2015-07-29

    申请号:EP14178036.1

    申请日:2014-07-22

    IPC分类号: H03F1/02 H03F3/217

    CPC分类号: H03F3/2171 H03F1/0288

    摘要: A device (400) includes a Doherty amplifier. The Doherty amplifier has a carrier path (404) and a peaking path (406). The Doherty amplifier includes a carrier amplifier (410) configured to amplify a signal received from the carrier path and a peaking amplifier (412) configured to amplify a signal received from the peaking path. The device includes a resistive switch (422) having a first terminal connected to the peaking path and a second terminal connected to a voltage reference, and a controller (424, Fig. 7) configured to set the resistive switch to a first resistance value when a power input of the Doherty amplifier is below a threshold and to a second resistance value when the power input of the Doherty amplifier is above the threshold.

    Rf power amplification and distribution systems, plasma ignition systems, and methods of operation therefor
    28.
    发明公开
    Rf power amplification and distribution systems, plasma ignition systems, and methods of operation therefor 审中-公开
    RF功率放大和分配系统,等离子体点火系统和为此的操作方法

    公开(公告)号:EP2881579A1

    公开(公告)日:2015-06-10

    申请号:EP13306666.2

    申请日:2013-12-04

    摘要: An embodiment of a plasma ignition system for an internal combustion engine having up to N cylinders includes a power splitter, N phase shifters, N amplifiers, a power combiner network, and up to N radiation devices. The power splitter divides an input RF signal into N divided RF signals. Each phase shifter applies one of multiple pre-determined phase shifts to one of the N divided RF signals to produce N phase shifted RF signals. The N amplifiers amplify the N phase shifted RF signals to produce N amplified, phase shifted RF signals. The power combiner network combines the N amplified, phase shifted RF signals to produce N output RF signals. Each of the radiation devices receives one of the N output RF signals, and produces a plasma discharge when a power level of the output RF signal is sufficiently high.

    摘要翻译: 用于在具有多达N个气缸的内燃机的等离子体点火系统的实施例包括功率分配器,N移相器,N个放大器,功率组合器网络,并且多达N辐射装置。 功率分离器以划分输入RF信号转换成N个划分的RF信号。 每个移相器适用多个预先确定的相移至N中的一个中的一个划分RF信号以产生N个相移的RF信号。 上述N个放大器放大的N个相移的RF信号,以产生N个被放大,相移的RF信号。 功率组合器网络结合了N个被放大,相移的RF信号以产生N个输出RF信号。 每个辐射设备接收N个输出RF信号中的一个,并产生等离子体放电。当输出RF信号的功率电平足够高。