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。
2
The characteristicimpedance 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。
3
The process of adjusting impedance so that the input impedance of an antenna equals or approximates the characteristicimpedance of its transmission line over a specified range of frequencies.