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
    • 37. 发明申请
    • WIDEBAND IMPEDANCE TRANSFORMER
    • 宽带阻抗变压器
    • US20150091667A1
    • 2015-04-02
    • US14305808
    • 2014-06-16
    • Telefonaktiebolaget L M Ericsson (publ)
    • Sashieka SeneviratneIgor Spokoinyi
    • H01P5/02
    • H01P5/02H01P1/20345H01P1/2039H01P5/12
    • Embodiments of a low-complexity and potentially physically small wideband impedance transformer that can be used in a combining network of a wideband Doherty amplifier are disclosed. In one embodiment, a wideband Doherty amplifier includes Doherty amplifier circuitry and a wideband combining network. The wideband combining network includes a wideband quarter-wave impedance transformer that includes a quarter-wave impedance transformer and compensation circuitry connected in parallel with the quarter-wave impedance transformer at a low-impedance end of the quarter-wave impedance transformer. The compensation circuitry is configured to reduce a total quality factor of the wideband quarter-wave impedance transformer as compared to a quality factor of the quarter-wave impedance transformer, which in turn increases a bandwidth of the wideband quarter-wave impedance transformer, and thus a bandwidth of the wideband Doherty amplifier.
    • 公开了可用于宽带Doherty放大器的组合网络中的低复杂性和潜在的物理上小的宽带阻抗变换器的实施例。 在一个实施例中,宽带Doherty放大器包括Doherty放大器电路和宽带组合网络。 宽带组合网络包括宽带四分之一波阻抗变压器,其包括四分之一波阻抗变压器和在四分之一波阻抗变压器的低阻抗端与四分之一波阻抗变压器并联连接的补偿电路。 与四分之一波长阻抗变压器的质量因子相比,补偿电路被配置为降低宽带四分之一波阻抗变压器的总质量因子,这进一步增加了宽带四分之一波阻抗变压器的带宽,因此 宽带Doherty放大器的带宽。