会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • COMPOSITE AMPLIFIER
    • 复合放大器
    • EP1451925B1
    • 2009-01-14
    • EP02780233.9
    • 2002-10-29
    • Telefonaktiebolaget L M Ericsson
    • HELLBERG, Richard
    • H03F1/32
    • H03F1/3294H03F1/0294H03F1/3282
    • A composite amplifier includes a first and a second power amplifier (16, 18) connected to a Chireix output network (20). Means (10, 22) provide equal first and linear drive signal components that depends linearly on the amplitude A(t) of an amplitude modulated input signal. Further means (10, 24) provide first and second nonlinear drive signal components that have the same magnitude but opposite signs and depend non-linearly as 2ROOT 1-A(t) on the amplitude A(t) and are in quadrature to the first and second linear drive signal components. Means (26, 28, 30, 32) individually adjust amplitudes and phases of the drive signal components to lower drive power consumption. Means (34, 36) form a first composite drive signal to the first power amplifier by adding the adjusted first linear drive signal component to the adjusted first non-linear drive signal component a second composite drive signal to the second power amplifier by adding the adjusted second linear drive signal component to the adjusted second non-linear drive signal component.