Through analysis of sensor using the antenna model, it indicates that the radius and down-lead length of a disc coupler can influence frequency response characteristics.

对研制的内置圆板传感器建立天线模型进行分析表明，圆板天线半径和引线长度对圆板天线频率响应特性有很大影响。

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It is hold that one can increase static capacitance, reduce mode of input reactance and enhance the antenna gain by increasing down lead wires, their distances or lengthening the top loading wires.

研究表明，增加引线数目、引线间距和加长顶线长度均可以增加天线系统的静电容，减小输入电抗的模值，并使天线的增益有所改善。

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