【摘要】 作者在本文中对阶跃恢复二极管（ＳＲＤ）的输入导纳进行了精确的数学推导和求解，得出了较之教科书上所采用的要精确得多的阻抗倍乘系数Ｒ０，Ｘ０曲线，这就为阶跃管倍频器输入电路的设计提供了具有实用价值的参考数据。更多还原

【Abstract】 The paper gives an accurate mathematical deduction and solution to the input impedance of step recovery diode,which results in the impedance multiplier factor curve more accurate than that commonly used in the academic books and supplies a perfect basis for the input circuit design of SRD frequency multiplier.更多还原