Optically reconfigured active phased array antennas

1988 IEEE AP-S. International Symposium, Antennas and Propagation Pub Date : 1988-06-06 DOI:10.1109/APS.1988.93985

A. Daryoush, B. Choe

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引用次数: 10

Abstract

An outline is presented of a study on the impact of active-module failure on the radiation pattern of phased array antennas. A linear phased array composed of 13 active elements was simulated. The interactive simulation program was based on the calculation of array factor by specifying each elements amplitude, phase, spacing and radiation pattern. Results of the simulation predict increases in the sidelobe level associated with reduction in the directivity gain. Degradation on the array factor is also more substantial on the elements closer to the center. For two symmetric elements a similar degradation was observed. As the radiating beam was scanned, asymmetric radiation patterns were predicted for the failed mode of operation. The effects of change in the radiating frequency on the radiation pattern was studied for normal and failure modes of operation. To study the effect of unequal interelement spacing on the radiation pattern under failure modes a linear progression of array spacing was introduced to the 13-element array. Results of this simulation for normal and failure modes of operation are also discussed.<>

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光学重新配置有源相控阵天线

概述了有源模块失效对相控阵天线辐射方向图影响的研究。仿真了一个由13个有源元件组成的线性相控阵。交互式仿真程序是通过指定各单元的幅值、相位、间距和辐射方向图来计算阵列因子。模拟结果预测，随着指向性增益的降低，旁瓣电平会增加。在靠近中心的元素上，阵列因子的退化也更为显著。对于两个对称单元，观察到类似的退化。在对辐射光束进行扫描时，预测了失效模式下的不对称辐射模式。在正常和失效工况下，研究了辐射频率变化对辐射图的影响。为了研究单元间距不等对失效模式下辐射方向图的影响，在13单元阵列中引入了阵列间距的线性级数。本文还讨论了正常运行模式和失效运行模式下的仿真结果。

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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1988 IEEE AP-S. International Symposium, Antennas and Propagation

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