Improved High Gain Vivaldi Antenna Design for Through-wall Radar Applications

2020 International Symposium on Antennas & Propagation (APSYM) Pub Date : 2020-12-14 DOI:10.1109/APSYM50265.2020.9350711

Anila Kuriakose, T. George, A. S

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引用次数: 5

Abstract

This paper presents a compact, low cost, high gain Ultra wideband (UWB) Vivaldi antenna convenient for Through-wall Radar (TWR) applications. This antenna, designed on low cost FR-4 substrate with thickness 0.8 mm has an operating frequency range from 1.9 GHz to 12 GHz. The proposed antenna shows a stable radiation pattern within the operating range and a gain greater than 6 dBi in the frequency range 2.2 GHz – 6 GHz with a maximum gain of 8.2 dBi and directivity of 9.04 dBi at 4.5 GHz which is ideal for Through wall Radar applications. Initially a compact and wideband Vivaldi antenna with exponentially tapered slot is designed and fabricated. Corrugations are added along the length of the antenna and periodic grating elements are inserted at the opening end of the exponential slot resulting in significant increase in gain, improved directivity and better impedance matching even at lower frequencies of the operating band. The fabricated antenna is tested and the measurement data corroborates the simulation results from Computer Simulation Technology Microwave Studio (CST-MWS).

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用于穿壁雷达的改进高增益维瓦尔第天线设计

提出了一种小型、低成本、高增益的超宽带维瓦尔第天线，适用于穿壁雷达。该天线设计在低成本FR-4衬底上，厚度为0.8 mm，工作频率范围为1.9 GHz至12 GHz。该天线在工作范围内具有稳定的辐射方向图，在2.2 GHz - 6 GHz频率范围内的增益大于6 dBi，在4.5 GHz频率范围内的最大增益为8.2 dBi，指向性为9.04 dBi，非常适合穿墙雷达应用。首先设计并制作了一种窄小的指数型狭缝宽带维瓦尔第天线。沿着天线的长度增加波纹，并在指数槽的开口端插入周期光栅元件，即使在工作频带的较低频率下，也能显著增加增益，改善指向性和更好的阻抗匹配。对制作的天线进行了测试，测量数据与计算机仿真技术微波工作室(CST-MWS)的仿真结果相吻合。

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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2020 International Symposium on Antennas & Propagation (APSYM)

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