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    • 5. 发明授权
    • Multi-reflector antenna
    • 多反射天线
    • US4811029A
    • 1989-03-07
    • US833338
    • 1986-02-25
    • Shinichi NomotoYoshihiko MizuguchiFumio Watanabe
    • Shinichi NomotoYoshihiko MizuguchiFumio Watanabe
    • H01Q19/17H01Q19/19H01Q15/16
    • H01Q19/192H01Q19/17
    • A multi-reflector antenna is disclosed which is arranged so that a main reflector surface, a subreflector surface and a primary radiator are electro-magnetically coupled together. When the main reflector is represented by a coordinate z=z(.rho., .psi.) using cylindrical coordinate system (z, .rho., .psi.) in which the direction of radiation of a main beam of the main reflector surface is in correspondence with the z-axis and the subreflector surface is represented by a coordinate r=r(.theta., .phi.) in a vector system using a spherical coordinate system (r, .theta., .phi.) in which the Snell's reference direction of the primary radiator is set to .theta.=0, the said z(.rho., .psi.) and r(.theta., .phi.) are so determined as to satisfy the law of reflection, a condition of constant path length and the following relation:.psi.=-.phi.+.psi..sub.0.rho.=.rho..sub.0 tan.theta./2where .psi..sub.0 and .rho..sub.0 are constants. The primary radiator is comprised of a plurality of horns.
    • 公开了一种多反射器天线,其被布置成使得主反射器表面,副反射器表面和主辐射器被电磁耦合在一起。 当使用圆柱坐标系(z,rho,psi)的坐标z = z(rho,psi)表示主反射器时,主反射器表面的主光束的辐射方向与z- 轴和亚反射器表面由矢量系统中的坐标r = r(θ,phi)表示,其中使用球面坐标系(r,theta,phi),其中主辐射器的Snell参考方向被设置为θ= 0 ,所述z(rho,psi)和r(θ,phi)被确定为满足反射定律,恒定路径长度的条件和以下关系:psi = -phi + psi 0 rho =rho0tanθ / 2其中psi 0和rho 0是常数。 主辐射器由多个喇叭组成。