Ultra-wideband antenna for a ground penetrating radar

2016 Thirteenth International Conference on Wireless and Optical Communications Networks (WOCN) Pub Date : 2016-07-21 DOI:10.1109/WOCN.2016.7759876

Niloy Chakrabarti, S. Kalra, Sanjeev Saxena, M. Tripathy

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引用次数: 6

Abstract

In this paper we have modeled a ultra-wideband 4×1 modified Vivaldi antenna array using the software HFSS for GPR applications. A one to four Wilkinson's power divider was designed to form the feed network for the antenna array. We have obtained ultra-wideband characteristics ranging from 1.19 GHz-9.62 GHz and multiband characteristics with frequency bands 9.92 GHz-12.33 GHz, 12.63 GHz-13.43 GHz, 13.71 GHz-14.58 GHz, 15.18 GHz-17.10 GHz and 18.40 GHz-20 GHz. We have obtained gain starting from the frequency 1 GHz which increases gradually with increase in frequency and reaches its peak of 15 dBi at the frequency 7.47 GHz. The Voltage standing wave ratio (VSWR) stays well below the value of 2 from a range of 1.13 GHz-9.67 GHz. Acquiring of ultra-wideband operating frequency band as well as multiband characteristics at very high frequency will facilitate implementation of a Ground Penetrating Radar system. Antenna parameters like return loss (S11) characteristics, gain, VSWR, directivity, E-plane, H-plane radiation patterns at different frequencies and current density on the radiating patch have been evaluated and results are analyzed.

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用于探地雷达的超宽带天线

本文利用HFSS软件对一种用于探地雷达的超宽带4×1改进的Vivaldi天线阵列进行了建模。设计了一个1到4的威尔金森功率分配器来形成天线阵列的馈电网络。我们已经获得了1.19 GHz-9.62 GHz的超宽带特性，以及9.92 GHz-12.33 GHz、12.63 GHz-13.43 GHz、13.71 GHz-14.58 GHz、15.18 GHz-17.10 GHz和18.40 GHz-20 GHz频段的多频段特性。我们得到了从1 GHz频率开始的增益，随着频率的增加逐渐增加，在7.47 GHz频率处达到15 dBi的峰值。电压驻波比(VSWR)在1.13 GHz-9.67 GHz范围内保持在2以下。获取超宽带工作频带以及非常高频率的多频带特性将有助于探地雷达系统的实施。对天线的回波损耗(S11)特性、增益、驻波比、指向性、不同频率下的e面、h面辐射方向图以及辐射贴片上的电流密度等参数进行了评估并对结果进行了分析。

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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来源期刊

2016 Thirteenth International Conference on Wireless and Optical Communications Networks (WOCN)

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