Distributed Phased Arrays Based MIMO (DPA-MIMO) for Next Generation Wireless User Equipment Hardware Design and Method

    公开(公告)号:US20180219587A1

    公开(公告)日:2018-08-02

    申请号:US15883725

    申请日:2018-01-30

    摘要: Generally, this disclosure provides systems and methods for distributed phased array multiple input multiple output (DPA-MIMO) communications. A system may comprise a baseband processing unit; a plurality of beamforming (BF) modules each of which comprises at least a beamforming antenna and a transceiver circuit comprising at least a downconverter that downconverts a beamformed antenna radio frequency signal to an intermediate frequency signal, and an upconverter that upconverts an intermediate frequency signal to radio frequency and sends to said beamforming antenna for transmission; a plurality of intermediate frequency (IF) radios, each of which comprises a receive chain circuit that includes at least a downconverter that downconverts an intermediate frequency signal sent from said BF module to a basedband signal conveyed to said baseband processing unit, and a transmit chain circuit that includes at least an upconverter that upconverts a baseband signal received from said baseband processing unit to an intermediate frequency signal which is conveyed to said beamforming module; and a plurality of cables or any type of physical signal transmission medium, each of which connects one of said beamforming modules with one of said intermediate frequency radios.

    A TIME VARIANT ANTENNA FOR TRANSMITTING WIDEBAND SIGNALS
    60.
    发明申请
    A TIME VARIANT ANTENNA FOR TRANSMITTING WIDEBAND SIGNALS 审中-公开
    一个用于发送宽带信号的变化天线

    公开(公告)号:US20160294056A1

    公开(公告)日:2016-10-06

    申请号:US15038394

    申请日:2014-11-20

    IPC分类号: H01Q3/34 H01Q5/25 H01Q9/04

    摘要: A circuit for tuning a resonance frequency of an electrically small antenna. The circuit includes a first source configured for providing a modulation signal, a second source configured for providing a periodic electrical signal, an antenna, and a tuning circuit configured for modulating a resonance frequency of the antenna in response to the modulation signal. The tuning circuit includes first and second capacitors that are alternately coupled to the antenna to change the resonance frequency of the antenna. The capacitor currently coupled to the antenna is decoupled from the antenna and the other capacitor is coupled to the antenna when the voltage across the capacitor currently coupled to the antenna is momentarily zero. In an exemplary embodiment, the tuning circuit comprises first and second inductors rather than capacitors. The inductors are switched into and out of the circuit when the current through the currently coupled inductor is momentarily zero.

    摘要翻译: 一种用于调谐电小天线的谐振频率的电路。 该电路包括被配置为提供调制信号的第一源,被配置为提供周期性电信号的第二源,天线以及被配置为响应于调制信号调制天线的谐振频率的调谐电路。 调谐电路包括交替耦合到天线的第一和第二电容器,以改变天线的谐振频率。 当前耦合到天线的电容器当前耦合到天线的电容器上的电压暂时为零时,当前耦合到天线的电容器与天线分离,另一个电容器耦合到天线。 在示例性实施例中,调谐电路包括第一和第二电感器而不是电容器。 当通过当前耦合的电感器的电流瞬时为零时,电感器被切换进出电路。