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特定的地面卫星通信系统中,要求实现具有全向辐射特性的锥状波束天线,这可以通过灵活的反射面赋形来实现。本文对毫米波双反射面天线进行赋形研究,使得在任意指定方向上的天线口径上获得均匀相位分布,实现指定方向上的锥状波束。利用微带圆贴片天线作为馈源,设计出工作于35GHz、锥角为30°的赋形双反射面锥状波束天线,天线增益为14.4dB,副瓣为-16.3dB。方位面内的方向图具有很好的圆对称性。
In certain terrestrial satellite communication systems, it is required to realize the conical beam antenna with omni-directional radiation characteristic, which can be realized by flexible reflective surface shaping. In this paper, the research on the forming of millimeter-wave dual-reflector antenna makes it possible to obtain a uniform phase distribution on the antenna aperture in any given direction and realize the conical beam in the specified direction. The microstrip circular patch antenna is used as the feed source to design a conical beam antenna with double reflective surface which is 35GHz and cone angle is 30 °. The antenna gain is 14.4dB and the sidelobe is-16.3dB. The azimuth plane has good circular symmetry.