Dynamic Radiation Pattern of a Two-Element Antenna Array with Spatial Amplitude Modulation
Dynamic Radiation Pattern of a Two-Element Antenna Array with Spatial Amplitude Modulation
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DOI：
10.1109/usnc-ursi52151.2023.10238221
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发表时间：
2023-07
期刊：
影响因子：
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通讯作者：
Jacob R. Randall;J. Nanzer
中科院分区：
文献类型：
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作者：
Jacob R. Randall;J. Nanzer
本文描述了采用空间幅度调制的二元天线阵的动态复辐射方向图。通过随时间改变两个天线之间的相对幅度比，阵列相位图案作为时间和角度的函数动态地改变，而幅度图案在大部分调制中保持基本恒定。我们分析了复杂的辐射方向图的两个元素组成的两个微带贴片天线设计在2.5 GHz的谐振，通过仿真，从一个连续的动态振幅比和从一组离散的振幅比的图案的特征。通过仅改变天线输入信号的幅度比，有效辐射功率与幅度比无关。实验进行了使用2.5 GHz的两个元件阵列与离散振幅比，演示了复杂的动态辐射模式。
We characterize the dynamic complex radiation pattern of a two-element antenna array employing spatial amplitude modulation. By altering the relative amplitude ratio between the two antennas over time, the array phase pattern changes dynamically as a function of time and angle, while the amplitude pattern remains largely constant over the majority of the modulation. We analyze the complex radiation pattern of a two-element array consisting of two microstrip patch antennas designed to resonate at 2.5 GHz through simulation, characterizing the patterns from a continuously dynamic amplitude ratio and that from a discrete set of amplitude ratios. By changing only the amplitude ratio of the antenna input signals, the effective radiated power is independent of the amplitude ratio. Experiments were conducted using a 2.5 GHz two-element array with discrete amplitude ratios, demonstrating the complex dynamic radiation pattern.