Conclusions
In this paper, a dual-polarization dual-beam scanning array antenna based on holographic control theory is proposed. The antenna element integrates four PIN diodes, two in each of the horizonal and vertical directions, to achieve reconfigurable polarization. By varying the states of two PIN diodes in the same direction to change the radiation phase of the element, the simulation and measurement of the 2-element subarray verify that the proposed element is capable of manipulating the radiation pattern. Based on digital coding theory, the phase-adjustable structure integrated with the PIN diodes can act as a holographic element, and the desired object wave can be accurately and stably obtained by modulating the reference wave excited by the feed and the holographic element. The simulation verifies that the antenna array can achieve satisfactory 2D beam scanning. To verify the simulation results, a 2-element subarray prototype and a 6×12 array prototype are fabricated and subjected to measurement. The results of measurement and simulation are in good agreement, which proves the feasibility of the dual-polarization dual-beam scanning antenna system. Due to its low profile, low cost, and easy integration, this antenna system excels in applications in fields such as radar systems and smart antennas.
摘要
提出一种基于全息控制理论的低剖面双极化双波束扫描天线阵列. 巧妙设计辐射单元, 以通过控制集成在每个单元上的PIN二极管的状态实现可重构极化和辐射相位调制. 将一个72通道的串并联等幅同相馈电网络与辐射阵列集成, 实现阵列的低剖面特性. 通过设计直流偏置电路, 利用单片机对天线阵列数字编码, 实现波束的二维动态精确偏转. 加工制作了一个2单元子阵列和一个6×12阵列, 并对该天线系统的数字可控辐射方向图特性进行实验验证. 该天线系统可以在11 GHz实现−30°至30°的波束扫描, 步进扫描角为5°. 该天线系统具有体积小、成本低、易于集成、波束控制准确等特点, 在雷达系统、智能天线等领域具有广阔的应用前景.
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Data availability
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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Contributions
Shichao ZHU designed the research. Shichao ZHU, Yuanfan NING, and Hongbo CHU tested the antenna system. Shichao ZHU drafted the paper. Pei XIAO helped organize the paper. Shichao ZHU and Gaosheng LI revised and finalized the paper.
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Shichao ZHU, Yuanfan NING, Hongbo CHU, Pei XIAO, and Gaosheng LI declare that they have no conflict of interest.
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Project supported by the Key Research and Development Plan of Hunan Province, China (No. 2023GK2009)
List of supplementary materials
1 Supplement to the analysis of the element
2 Supplement to the analysis of the 2-element subarray
3 Supplement to the holographic control theory
4 Supplement to the measurement results of the 2-element subarray
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Zhu, S., Ning, Y., Chu, H. et al. A low-profile dual-polarization programmable dual-beam scanning antenna array. Front Inform Technol Electron Eng 24, 1504–1512 (2023). https://doi.org/10.1631/FITEE.2300253
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DOI: https://doi.org/10.1631/FITEE.2300253