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本文用矩量法对电视发射用的装置于反射器近旁的双环天线的输入阻抗进行了计算,分析了天线反射板和天线间的距离对天线输入阻抗和带宽特性的影响,并将计算结果与测量值进行了比较。还计算了自由空间的双环天线的输入阻抗,将结果和由单环的计算值经传输线变换而获得的结果作了对比。
In this paper, the input impedance of the double-loop antenna near the reflector used in television transmission is calculated by the moment method. The influence of the distance between the antenna reflector and the antenna on the input impedance and bandwidth characteristics of the antenna is analyzed. The measured values were compared. The input impedance of the double loop antenna in free space is also calculated and the results are compared with those obtained from the calculation of the single loop over the transmission line.