介绍时域有限差分（FDTD）法计算准八木天线驻波比的算法实现方法。
The Finite Difference Time Domain(FDTD) method was used to calculate the Voltage Standing Wave Ratio(VSWR) of a quasi-Yagi antenna.
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 electric characteristic parameters of this novel sleeve antenna are calculated, including the input impedance, voltage standing wave ratio (VSWR), horizontal gain and radiation pattern.
分析了天线的电压驻波比和增益随着线栅根数以及天线高度等参数变化的特性。
The characteristics of VSWR and the gain of the antennas with different Numbers of wires and different heights are analyzed.
如果你仔细按照这个设计去做，你的天线会有很好的表现，有优秀的50欧姆匹配，导致驻波比很低。
If you have followed this design carefully, your antenna will perform very well and have an excellent match to 50ohms resulting in a low SWR.
通过比较分析，得到了天线谐振频率、谐振点电压驻波比、带宽以及输入阻抗随不同几何参数的变化规律。
By comparative analysis, the dependence of the resonant frequency, voltage standing wave ratio, bandwidth and input resistance on different geometric parameters is obtained.
通过对天线进行了驻波比、方向图、增益的详细测量并和软件仿真结果进行了比对和深入的分析。
The detailed measurements of the antenna, including VSWR, directivity and gain are processed. The measurement results are compared with the electromagnetic simulation results and analyzed.
故障定位或DTF模式指示驻波比或回波损耗水平在各点沿电缆长度和天线系统。
Fault location or DTF mode indicates VSWR or Return Loss levels at each point along the cable and antenna system length.
故障定位或DTF模式指示驻波比或回波损耗水平在各点沿电缆长度和天线系统。
Fault location or DTF mode indicates VSWR or Return Loss levels at each point along the cable and antenna system length.
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