园锥喇叭天线因为形状简单,可用于任意极化面,所以广泛地用作卫星通信大口径卡赛格伦天线的初级辐射器或卫星通信的全球波束天线等。在任何情况下被照射的目标一般是园形的,因此希望喇叭波束也具有园形截面。但是以波导主模激励的这种喇叭,因为E面和H面的束宽不同,故波束具有椭园截面,而且有E面付瓣甚高的缺点。在线极化中波束没有轴对称性,在园极化情况下,这就意味着横向极化特性要变坏,所以目前 Because of its simple shape, the cone-horn antenna can be used for any polarized surface, so it is widely used as a primary radiator or a global beam antenna for satellite communication in large-caliber satellite communication satellites. The target to be irradiated in any case is generally circular in shape, so it is desirable that the horn beam also have a circular cross-section. However, this type of horn, which is excited by the waveguide main mode, has an elliptical cross-section due to the different beam widths of the E-plane and the H-plane, and has the disadvantage that the E-plane has a very high level of flap filling. There is no axisymmetric beam in an in-line polarization, which in the case of a circular polarization implies a deterioration of the lateral polarization, so at present