by analyzing the function numerically, it is found that (1) the input admittance of electrically short antenna is a complicated function of the operating frequency.
通过分析其变化规律得到下列结论:(1)短天线的输入导纳随频率的变化比较复杂。
the calculated results of radiation pattern, input admittance and mutual admittance of wire antennas on a complex platform are in good agreement with those in literature.
复杂金属组合体上线天线输入导纳、互导纳和方向性图的计算结果与文献结果一致。
secondly, use the rational approximation to fit input admittance curve.