Antenna system for broadband satellite communication in the GHz frequency range, comprising horn antennas with geometrical constrictions

包括具有几何收缩的喇叭天线的、用于GHz频率范围的宽带卫星通信的天线系统

Abstract

本发明涉及一种包括至少四个喇叭天线的天线系统,该四个喇叭天线支持两个正交的线偏振,并且在两个偏振面中具有收缩。通过对称的几何收缩使喇叭天线在两个偏振面中收缩的事实使得喇叭天线的带宽大致增加,从而使得能够服务宽的发射和接收频带或频率相距很远的发射和接收频带,诸如Ka频带。为了能够在相距很远的服务频带中最佳地操作各个脊状喇叭天线,有利地使喇叭天线和收缩都是阶梯状的。适当地选择喇叭天线的阶部和收缩的阶部的高度和宽度,使得能够将喇叭天线调节到与阻抗对应的服务频率。
The invention relates to an antenna system consisting of at least four horn antennas which support two orthogonal linear polarizations and have constrictions in both polarization planes. The fact that the horn antennas are constricted in the two polarization planes by symmetrical geometrical constrictions allows for a substantial increase in the bandwidth of the horn antennas, thus making it possible to service also wide transmission and reception bands or transmission and reception bands with widely spaced-apart frequencies, such as the Ka band. In order to be able to optimally operate the individual ridged horn antennas also in widely spread-apart service frequency bands, advantageously both the horn antennas and the constrictions are step-shaped. A suitable selection of the height and width of the steps of the horn antenna and the steps of the constrictions allows the horn antennas to be optimally adjusted to the service frequency bands according to the impedance.

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