There are many methods to measure the pattern of phased array antenna, such as the technique of plane scanning in nearfield, focusing method in Fresnel zone, general method in far field, etc.
阐述了用聚焦法在菲涅尔区测试相控阵天线的理论依据及实现方法，用实验结果对近远场方向图进行了比较。
2
The near-zonefield of the handset with an earphone is calculated by the finite -difference time-domain (FDTD) method.
利用时域有限差分（FDTD）法分析了耳机引线对手机天线辐射近场的影响。
3
In time domain on the nearzone of vertical magnetic source, the transient field form is decided by fractional power of the angular frequencies for field source.