小型宽带天线（103）还包括作为在辐射元件和电力供应单元 之间进行阻抗匹配的阻抗匹配单元的短截线导体（17）。
The small-size wide-band antenna (103) further includes a stub conductor (17) as an impedance matching unit for matching the impedance between the radiation element and the power supply means.
构建了一个能为RFID天线阻抗的动态变化提供匹配的自动阻抗匹配虚拟系统。
An virtual electronic automatic matching system was designed, used for RFID antenna impedance.
由于该天线的输入阻抗随频率而变化，需要用一个宽带变负载阻抗匹配网络来实现天线与电台之间的匹配。
The impedance matching network of changeable load and wide-belt is required because the input impedance of spiral antenna changes with frequency.
本文构建了一个能为RFID天线阻抗的动态变化提供匹配的自动阻抗匹配虚拟系统。
This article design a virtual system that can provide automatic matching for RFID antenna impedance.
通过对试验结果分析表明，炸药岩石阻抗最优匹配区并非在其匹配系数等于1处，而是在1.6～1.65之间，并提出了以爆破的破碎圈半径大小来评价炸药岩石阻抗匹配情况的建议。
The results of experiment indicated that the best matched impedance is not at a point when coefficient is 1 but in the range of 1.5 to 1.65. A proposal was made that radius…
通过对试验结果分析表明，炸药岩石阻抗最优匹配区并非在其匹配系数等于1处，而是在1.6～1.65之间，并提出了以爆破的破碎圈半径大小来评价炸药岩石阻抗匹配情况的建议。
The results of experiment indicated that the best matched impedance is not at a point when coefficient is 1 but in the range of 1.5 to 1.65. A proposal was made that radius…
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