一种用于GNSS应用的多波段共形天线阵列

K. Yinusa, W. Elmarissi, S. Caizzone, A. Dreher
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引用次数: 5

摘要

由于卫星几何特性的贡献,在三角测量中加入低海拔卫星可以提高卫星导航的定位精度。此外,改善低海拔信号的接收导致更高的整体系统可用性。然而,接收天线的特性通常在低海拔处受到低增益和高轴比的影响。在这篇文章中,提出了一种与球形帽共形的天线阵列。该阵列由位于帽顶的单个天线和位于环上的六个径向定向的等间距元件组成。该天线在E5a/b和E1中心频率分别为1.176 GHz、1.207 GHz和1.575 GHz时,前半球的轴比较低,增益在0 ~ 4 dB之间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A multi-band conformai antenna array for GNSS applications
The position accuracy in satellite navigation is enhanced when low elevation satellites are included in the triangulation due to the contribution of satellite geometry. Moreover, improved reception of low elevation signals leads to a higher overall system availability. However, the receiving antenna characteristics usually suffer from low-gain and high axial ratios at low elevations. In this contribution, an antenna array conformal to a spherical cap is presented. The array consists of a single antenna on top of the cap and six, radially directed, equally spaced elements on a ring. The manufactured antenna achieves a gain between 0 dB and 4 dB with low axial ratio in the forward hemisphere at the E5a/b and E1 center frequencies of 1.176 GHz, 1.207 GHz and 1.575 GHz, respectively.
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