Design of Circularly Polarized Antenna for Vehicular GNSS Application

2023 Second International Conference on Electrical, Electronics, Information and Communication Technologies (ICEEICT) Pub Date : 2023-04-05 DOI:10.1109/ICEEICT56924.2023.10157726

Amruta A. Nikam, Rupali B. Patil

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Abstract

For vehicle roof tops, a circular polarized square-shaped slot type antenna is proposed. The higher GNSS band which ranges from 1.559 to 1.606 GHz, is covered by the proposed antenna. The patch, square slot and chemfering edges of patch work together to produce circular polarization modes that significantly increase the antenna 3-dB axial ratio (AR). The AR for the antenna element in the simulations is 1.19 dB, the axial ratio bandwidth is 65 MHz, the VSWR is near about 1, the S11 parameter is less than −10 dB, and the gain is 8 dBic over the frequency range. It is made of poly vinyl chloride with dimensions of 54 mm x54 mm x 6.8 mm. The design procedure is explained in depth, as well as the antenna operating mechanism. A completely functional prototype was created and measured to confirm the proposed antenna's performance. When the measured voltage standing wave ratio (VSWR) and the S11 Parameter are compared with the observed data, a satisfactory agreement is found. Future multiband antenna designs for automotive communication could incorporate this antenna along with 4G/5G/6G band antenna.

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用于车载GNSS的圆极化天线设计

针对汽车车顶，提出了一种圆形极化方形槽型天线。更高的GNSS频段范围为1.559至1.606 GHz，该天线将覆盖该频段。贴片、方槽和贴片的化学化边缘共同作用产生圆极化模式，显著提高天线的3db轴比(AR)。仿真中天线单元的AR为1.19 dB，轴比带宽为65 MHz，驻波比接近1,S11参数小于- 10 dB，在频率范围内增益为8 dBic。它由聚氯乙烯制成，尺寸为54毫米x54毫米x 6.8毫米。对设计过程进行了深入的说明，并对天线的工作机构进行了说明。一个完整的功能原型被创建和测量，以确认所提出的天线的性能。将实测电压驻波比(VSWR)和S11参数与实测数据进行比较，得到了满意的结果。未来用于汽车通信的多频段天线设计可以将该天线与4G/5G/6G频段天线结合在一起。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2023 Second International Conference on Electrical, Electronics, Information and Communication Technologies (ICEEICT)

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