论文部分内容阅读
研究了利用天线近场幅度信息重构天线远场特性的无相位近场测量方法.该方法使用线极化探头在被测天线近场区两平行平面上采集场的幅度数据,通过迭代傅里叶变换算法复原一采样面上各采样点场的相位数据,然后通过近远场变换得到被测天线的远场特性.通过理论研究和仿真实验表明,无相位近场天线测量技术可有效地重构天线远场,同时,合理地选择迭代初始相位将有助于提高算法的收敛速度和精度.
A phase-less near-field measurement method using antenna near-field amplitude information to reconstruct the far-field characteristics of the antenna is studied.The method uses a linear polarization probe to collect field amplitude data on two parallel planes in the near field of the antenna under test, The leaf transform algorithm restores the phase data of each sampling point field on a sampling surface, and then obtains the far-field characteristics of the antenna under test by near and far field transformation.The theoretical and simulation experiments show that the phaseless near field antenna measurement technique can effectively weight At the same time, choosing the initial phase of iteration rationally will help to improve the convergence speed and precision of the algorithm.