The utility model has the characteristics of light weight, small dielectric gain loss, low dielectric thermal noise temperature, small input voltage standing wave ratio, etc. 本实用新型具有重量轻、介质增益损失小,介质热噪声温度低、输入电压驻波比(VSWR)小等特点。
The Finite Difference Time Domain ( FDTD ) method was used to calculate the Voltage Standing Wave Ratio(VSWR) ( VSWR ) of a quasi-Yagi antenna. 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 electrical characteristics ( radiation pattern, gain, input impedance, voltage standing wave ratio, etc. ) and the variable phase centers of the log-periodic dipole antenna in the free space are analyzed and calculated in detail, taking into account all mutual coupling effect. 采用该方法对自由空间对数周期偶极天线的方向图、增益、输入阻抗和电压驻波比(VSWR)以及等效相位中心等特性进行了详细的分析计算,且计算时考虑了阵中所有偶极子之间的全部互耦。
Finally, the trial antennas were taken the input voltage standing wave ratio test and the practical application of the received signal power strength test and the results validated the correctness of the simulation analysis, the cause of deviations was discussed. 最后,通过对试制天线的输入电压驻波比(VSWR)与实际应用中接收信号强度的测试,进一步验证了仿真分析的正确性,对于测试结果中存在的偏差进行了分析。
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)(VSWR)、增益及辐射方向图等电特性。