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设计了一种小型化宽带定向天线。椭圆形的印制单极天线是一种小型化的超宽带天线,通过将该单极天线的地板折叠为字母C的形状,作为单极天线振子的反射腔,不仅实现了天线的定向性,同时进一步减小了天线的高度尺寸(0.13λ0,λ0为工作频率空气波长)。制作了天线样件并进行了测试,实测结果表明,该小型化天线驻波小于3的工作带宽为700~3 800 MHz,天线的方向图在整个频带内具有良好的定向辐射特性。
A miniaturized broadband directional antenna is designed. The oval printed monopole antenna is a miniaturized ultra-wideband antenna. By folding the floor of the monopole antenna into the shape of the letter C as the reflecting cavity of the monopole antenna element, not only the orientation of the antenna is realized, At the same time to further reduce the height of the antenna size (0.13λ0, λ0 for the operating frequency of air wavelength). Antenna samples were fabricated and tested. The measured results show that the working bandwidth of the miniaturized antenna with standing wave less than 3 is 700 ~ 3 800 MHz. The antenna pattern has good directional radiation characteristics in the whole frequency band.