用于INCUS的多波束1.6m ka波段可展开网状反射器天线概念

2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI) Pub Date : 2022-07-10 DOI:10.1109/AP-S/USNC-URSI47032.2022.9887221

N. Chahat, J. Sauder, Marc S. Lane, E. Decrossas, Gaurangi Gupta, P. Focardi, N. Beidleman, G. Freebury, M. Thomson, S. Tanelli

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引用次数: 0

摘要

介绍了一种多波束ka波段可展开网状反射器，该反射器是为美国宇航局的地球冒险任务INCUS(对流上升气流调查)设计的。它是一个直径1.6米的网状反射器，由5个小角组成的阵列偏移馈送。为了在天线方向图的3db点实现所需的交叉轨道重叠，将4个非最低点角排成两行。该解决方案利用平台运动，通过简单的开关喇叭解决方案实现所需的扫描模式。描述了优化天线馈电位置以实现3dB波束宽度重叠的方法，并给出了反射面天线的整体性能。

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Multi-Beam 1.6m Ka-band Deployable Mesh Reflector Antenna concept for INCUS

A multi-beam Ka-band deployable mesh reflector designed for the NASA’s Earth Ventures Mission named INCUS (Investigation of Convective Updrafts) is presented. It is a 1.6m diameter mesh reflector offset-fed by an array of five small horns. The 4 off-nadir horns are arranged in two rows in order to achieve the desired cross-track overlap at the 3-dB point of the antenna pattern. This solution takes advantage of the platform motion to achieve the desired scan pattern with a simple switched-horn solution. The optimization of the antenna feed location to achieve the 3dB beamwidth overlap is described and the overall reflector antenna performance is presented.

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2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)

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