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由初级馈源照射的单个或多个金属反射器的天线,经常使用厘米波到毫米波波段。 这种天线有很大的优点:性能高,制造简单,价格低廉及外形多样化。实际上这种天线包括一个或两个对称或非对称切割的反射器(卡塞格伦天线),横向辐射(喇叭天线)或纵向辐射(介质天线)的初级馈源等等。 本文旨在陈述计算反射器天线和初级馈源辐射场所使用的方法,并列举在某些情况下所取得的结果。
Antennas for single or multiple metal reflectors illuminated by a primary feed often use a centimeter to millimeter wave band. This antenna has great advantages: high performance, simple manufacture, low price and diversified appearance. In practice, such antennas include one or two symmetrically or asymmetrically cut reflectors (Cassegrain antennas), a primary feed of transverse radiation (horn antenna) or longitudinal radiation (dielectric antenna), and the like. The purpose of this article is to present the method used to calculate the reflector antenna and the primary feed radiation and to list the results obtained in some cases.