Full-wave analysis of a compact antenna test range including probe effect
Full-wave analysis of a compact antenna test range including probe effect
复制标题
紧凑型天线测试范围的全波分析，包括探头效应
DOI：
--
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
D. Heberling
中科院分区：
文献类型：
--
作者：
T. M. Gemmer;R. Cornelius;J. Pamp;D. Heberling
设计的紧凑型天线测试场 (CATR) 的模拟静区 (QZ) 性能通过 QZ 现场探测进行验证。然而，CATR 的数值模拟缺乏对探针的建模。用于评估 QZ 中的场的接收天线对计算/测量的同向分量，尤其是交叉极化分量有影响。探头效应的程度取决于探头的辐射特性和交叉极化纯度。将探针纳入模拟克服了探针校正的缺点，因为可以计算 QZ 的任意尺寸。为了确定范围，对具有不同辐射方向图的探头进行了表征，并在 4.5 GHz 频率的现场探测测量过程中使用这些探头。随后，使用单反射器模型结合 FEKO 中实现的多级快速多极方法 (MLFMM) 生成模拟 QZ 数据。通过对模拟数据应用平面近场理论，将测量的探头图案纳入计算数据中。特别是，与原始模拟结果相比，交叉极化发生了显着变化。
Simulated Quiet Zone (QZ) performance of a designed Compact Antenna Test Range (CATR) is validated by QZ field probing. Numerical simulations of CATRs, however, lack of modeling the probe. The receiving antenna which is used in order to evaluate the field in the QZ has an influence on the calculated / measured co- and particularly, on the cross-polar components. The degree of the probe effect depends on the radiation characteristic and on the cross-polarization purity of the probe. Including the probe into simulations overcomes the disadvantages of probe correction since the possibility exists to calculate arbitrary dimensions of the QZ. In order to determine the extent, probes with varying radiation patterns are characterized and are used during field-probing measurements at a frequency of 4.5 GHz. Subsequently, simulated QZ data is generated using a single-reflector model in combination with the Multi-level Fast Multipole Method (MLFMM) implemented in FEKO. The measured probe patterns are included into the calculated data by applying planar near-field theory on the simulated data. Especially, the cross-polarization changes significantly compared to the original simulation results.