The electric characteristic parameters of this novel sleeve antenna are calculated, including the input impedance, voltage standing wave ratio (VSWR), horizontal gain and radiation pattern.
研究了这种新型套筒天线的输入阻抗、电压驻波比（VSWR）、增益及辐射方向图等电特性。
The characteristic impedance and attenuation characteristic calculation of the antenna tuner for wire antennas are derived in this paper. And some analysis methods are given.
本文导出线天线的天线调谐器的特性阻抗和衰减特性的计算，并对其进行了分析。
The process of adjusting impedance so that the input impedance of an antenna equals or approximates the characteristic impedance of its transmission line over a specified range of frequencies.
天线匹配指定频率范围内，调整阻抗使得天线的输入阻抗等于或大致等于其发射线路特性阻抗的过程。
The small electrical antenna is characteristic of a low input impedance and a low efficiency.
传统的电小天线其特点是低输入电阻和低效率。
The small electrical antenna is characteristic of a low input impedance and a low efficiency.
传统的电小天线其特点是低输入电阻和低效率。
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