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前言对天线性能的要求越来越高,相应地使得对天线测试的要求也越来越高。对于大型天线结构,近场测试技术是很有吸引力的,它比用一般远场测试所得到的精度要高一些。对设备容许误差的要求也更为严格。因此,重要的是能够设计出一种合理的测试设备,在设计中能
Preface The requirement for the performance of the antenna is getting higher and higher, which accordingly makes the requirements for the antenna test higher and higher. The near-field test technique is attractive for large antenna structures and is more accurate than the average far-field test. The tolerance for the equipment is also more stringent. Therefore, it is important to be able to design a reasonable test equipment that can be designed