摘要
The equations of the reflector contours and the radiation patterns of the shaped dual-reflector antenna have been derived, and the methods of designing the antenna are also intro-duced briefly. The calculated and measured results suggest that this new type of antennahas the advantages of low VSWR (voltage standing-wave ratio), low sidelobe, and high gain.Therefore it opens a bright prospect for the improvement of mid-and small-aperture anten-na performance, and gives the possibility for the realization of the 1990s new standard spec-ified by CCIR (International Radio Consultative Committee) on mid-and small-aperture an-tenna for satellite-communication earth stations.
The equations of the reflector contours and the radiation patterns of the shaped dual-reflector antenna have been derived, and the methods of designing the antenna are also intro-duced briefly. The calculated and measured results suggest that this new type of antennahas the advantages of low VSWR (voltage standing-wave ratio), low sidelobe, and high gain.Therefore it opens a bright prospect for the improvement of mid-and small-aperture anten-na performance, and gives the possibility for the realization of the 1990s new standard spec-ified by CCIR (International Radio Consultative Committee) on mid-and small-aperture an-tenna for satellite-communication earth stations.
