远场区

远场区（佛累和费区）

Far-field region ( Frouhofer region )

ESDEMP对MPU电路危害表现在放电的近场区，容易造成电子器件的击穿，而在远场区，主要是对电子设备造成高频干扰。

ESD EMP can cause breakdown of electronic equipments in nearby electric field and have high frequency interference on MPU in far electric field .

在PC机上应用扩展虚拟内存技术对一种单向介质辐射器（UDR）模型进行了FDTD模拟，求出了远场区辐射方向图，得出的数值结果与实测值较好地吻合；

An unidirectional dielectric radiator for antenna is simulated with FDTD method on PC. The radiation pattern is calculated , and numerical results agree with experimental results .

远场区同轴传输线测试法的原理与进展

Theory and Developments of the Coaxial Transmission Line Test Methods for Far Field Source

文章给出了满足嵌入式系统要求的缺陷反射面向任一脉冲峰值的实时采集线路，并给出了不仅适用于远场区（S>N），而且适用于近场区（N/2

It introduces defection reflection face to any pulse peak value of real time collection circuitry which contentment in request for embedded system , and also introduces equivalent algorithm which is applied for not only far field ( S > N ) but also near fields ( N / 2

基于电偶极辐射的理论基础，导出作椭圆振动的电偶极辐射在远场辐射区的能流密度，进而求出辐射功率.作为一个特例，讨论了三相交流电机的辐射问题。

Calculates the energy flux density of elliptic-polarization electric dipole radiation based on the theory of electric dipole radiation , and , further , the radiant power of the electric dipole ; discusses the electromagnetic radiation of the triphase alternator which is treated as a special case .

针对运用矩量法计算电大尺寸天线时遇到的严重困难，提出一种基于矩量法的计算天线远场的远区近似（MOM-FZ）方法。

Aimed at the difficulty in calculating an electrically large size antenna by using MOM , a far zone approximate method based on MOM ( MOM-FZ ) was presented for calculating radar antenna pattern .

在远场主要辐射区（即傍轴区），振幅和相位对于源包络扰动不敏感，而在远轴区较敏感。

In the paraxial region , the far field amplitude and phase are not sensitive to the source perturbation , but , in off axis region , they may be sensitive .