The Design of Wideband Phased Array Antenna using Ridged Tapered Slot Antenna

2006 IEEE Antennas and Propagation Society International Symposium Pub Date : 2006-07-09 DOI:10.1109/APS.2006.1711029

Junyeon Kim, J. So, Won Jang, C. Cheon

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引用次数: 7

Abstract

In this paper, instead of multilayered notch antenna, the ridged tapered slot antenna (RTSA) is chosen as an element of wideband phased array antenna (PAA) since it has rigid body and can be easily manufactured by mechanical wire-cutting. In addition, because the RTSA is made of conductor, it doesn't need via-holes which are required to avoid the blind angles out of the operation frequency band. Theses blind angles come from the self resonance of the dielectric material of notch antenna. We developed wide band/wide scan PAA which has a bandwidth of 3:1 and scan volume of plusmn45deg. In order to determine the shape of the RTSA, the active VSWR (AVSWR) of the RTSA was optimized in the numerical waveguide simulator. And then using the E-plane/H-plane simulator, the AVSWR with beam scan angles in E-plane/H-plane are calculated respectively. On the basis of optimized design, numerical analysis of finite arrays was performed by commercial time domain solver. Through the simulation of 10 times 6 quad-element RTSA arrays, the AVSWR at the center element was computed and compared with the measured result. The active element pattern (AEP) of 10 times 6 quad-element RTSA arrays was also computed and had a good agreement with the measured AEP. From the result of the AEP, we can easily predict that 10 times 6 quad-element RTSA arrays have a good beam scanning capabilities

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采用脊状锥形缝隙天线的宽带相控阵天线设计

本文选择脊状锥形缝隙天线(RTSA)作为宽带相控阵天线(PAA)的元件，以取代多层陷波天线，因为RTSA具有刚体特性，且易于机械线切割制造。此外，由于RTSA是由导体制成的，因此不需要通过孔来避免工作频带以外的盲角。这些盲角来源于陷波天线介质材料的自共振。我们开发了宽带/宽扫描PAA，其带宽为3:1，扫描体积为±45度。为了确定RTSA的形状，在数值波导模拟器中对RTSA的有源驻波比进行了优化。然后利用e面/ h面模拟器，分别计算了e面/ h面波束扫描角下的AVSWR。在优化设计的基础上，利用商用时域求解器对有限阵列进行了数值分析。通过对10 × 6四元RTSA阵列的仿真，计算了中心元处的AVSWR，并与实测结果进行了比较。计算了10 × 6个四元RTSA阵列的有效元方向图(AEP)，与实测的AEP吻合较好。根据AEP的结果，我们可以很容易地预测10 × 6四元RTSA阵列具有良好的波束扫描能力

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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2006 IEEE Antennas and Propagation Society International Symposium

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