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据报道,英国广播公司研制成一种可以安装在墙上的平板型卫星直播接收天线。它与普通的0.6-0.9米小型抛物面天线相比,体积更小,更易于安装,而且可以避免风负荷的影响。众所周知,为定向接收卫星的信号,接收天线的波束宽度仅为二度。为此,安装这种天线时,除考虑安装天线的方向以外,还需模拟相控阵雷达天线的原理,通过改变各天线阵元信号的相位来改变波束
It is reported that the BBC has developed a flat-panel satellite receiving antenna that can be installed on the wall. It is smaller and easier to install than a typical 0.6-0.9-meter small parabolic antenna and can be protected from wind loads. It is well known that for directional satellite reception signals, the receive antenna has a beam width of only two degrees. For this reason, when installing such an antenna, in addition to considering the direction of installing an antenna, the principle of the phased array radar antenna needs to be simulated, and the beam is changed by changing the phase of each antenna element signal