measurement data for Wide Bandwidth Low Profile PIFA Antenna for Vehicular Sub-6GHz 5G and V2X Wireless Systems

This paper introduces a low profile wideband Planar Inverted-F antenna (PIFA) for vehicular applications in the 5G systems (below 6GHz) and Vehicle-to-Everything (V2X) communications. The antenna covers a wide range of bandwidth that operates from 617MHz to 6GHz while having an acceptable filtering on the GNSS bands. This design’s physical dimensions and electrical performance makes it suitable for low profile wireless applications in the automotive field. Measurement data on Ground plane (GND) and on vehicle are presented from properly cut metal sheet prototype along with simulated results of the model design. Simulation and measurement results are discussed in terms of return loss, surface current distribution, radiation patterns, antenna efficiency, and linear average gain (LAG).

本论文介绍了一款面向5G系统（6GHz以下）及车到万物（Vehicle-to-Everything, V2X）通信车载场景的低剖面宽带平面倒F天线（Planar Inverted-F Antenna, PIFA）。该天线工作带宽覆盖617MHz至6GHz，且可对全球导航卫星系统（Global Navigation Satellite System, GNSS）频段实现合规滤波。本设计的物理尺寸与电气性能使其适配汽车领域的低剖面无线应用场景。本文给出了基于精密切割金属板材原型的接地平面（Ground plane, GND）及车载实测数据，并同步提供了该模型设计的仿真结果。本文从回波损耗、表面电流分布、辐射方向图、天线效率以及线性平均增益（Linear Average Gain, LAG）等维度对仿真与实测结果展开讨论。