An iterative approach to determine the refractive index of 3D printed 60GHz PLA lenses - Mätning och simulering av fokallängd hos 3D-utskriven radarlins

This study is a part of the research project eMC-Hammer. It describes an iterative approach to determine quasi-optical properties of standard 3D printer filament material to, in an inexpensive and fast way, construct focusing lenses for millimetre wave systems. Results from three lenses with different focal lengths are shown and discussed. The real part of the permittivity at 60GHz for polylactic acid (PLA) is in this paper determined to be er=2.74. Purpose: The purpose with the study is to validate an iterative, low cost, method of determining the refractive index of 3D printed lenses, where otherwise expensive equipment would be needed, such as S-parameter measurements using a vector network analyzer. The dataset contains measurements, simulation results and matlab code used for the conference article "An iterative approach to determine the refractive index of 3D printed 60GHz PLA lenses" (doi:10.1049/cp.2018.1480) See the conference article (methods) and lapc2018mainfigure.m (data description - meta data) for details.

本研究隶属于eMC-Hammer科研项目。本文提出一种迭代方法，用于测定标准3D打印丝材的准光学特性，从而以低成本、快速的方式构建毫米波系统用聚焦透镜。文中展示并讨论了三款不同焦距透镜的实验结果。针对聚乳酸（polylactic acid, PLA）材料，本文测得其在60GHz频段下的介电常数实部为ε_r=2.74。研究目的：本研究旨在验证一种低成本迭代方法，用于测定3D打印透镜的折射率——传统方法需依赖矢量网络分析仪进行S参数测量等昂贵设备。本数据集包含该会议论文"An iterative approach to determine the refractive index of 3D printed 60GHz PLA lenses"（doi:10.1049/cp.2018.1480）中使用的测量数据、仿真结果及Matlab代码。详细信息请参阅该会议论文的方法部分与lapc2018mainfigure.m（数据描述-元数据）。