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Dual-Layer Transmitarray Antenna with High Transmission Efficiency
IEEE Transactions on Antennas and Propagation ( IF 5.7 ) Pub Date : 2020-08-01 , DOI: 10.1109/tap.2020.2989555
Xingliang Zhang , Fan Yang , Shenheng Xu , Abdul Aziz , Maokun Li

In contrast to traditional multilayer transmitarray designs, a novel dual-layer transmitarray antenna, consisting of two metallic layers printed on opposite sides of a single dielectric substrate, is proposed to achieve high transmission efficiency. First, it is theoretically derived that a dual-layer element, using the circular polarization conversion approach, can achieve a high transmission magnitude and a full transmission phase coverage. Next, a split-ring element has been designed as an example to demonstrate the theoretical analysis, where a full 360° transmission phase range with better than −1.0 dB transmission magnitude has been obtained. To experimentally validate the proposed concept and design, a circular transmitarray prototype is designed, simulated, fabricated, and tested at Ka-band. The diameter of the circular aperture is 405 mm ( $27\lambda$ ), and the thickness of the transmission surface is 3.18 mm ( $0.2\lambda$ ). The measured peak gain of the designed transmitarray is 36.1 dBic at 19.4 GHz with the aperture efficiency of 60.2%, while the measured 1 dB gain bandwidth is 9.5% (19.0–20.9 GHz).

中文翻译:

高传输效率的双层发射阵列天线

与传统的多层发射阵列设计相比,提出了一种新型的双层发射阵列天线,由印刷在单个介电基板两侧的两个金属层组成,以实现高传输效率。首先,从理论上推导出使用圆偏振转换方法的双层元件可以实现高传输幅度和全传输相位覆盖。接下来,设计了一个裂环元件作为示例来演示理论分析,其中获得了优于 -1.0 dB 传输幅度的完整 360° 传输相位范围。为了通过实验验证所提出的概念和设计,圆形发射阵列原型在以下位置进行了设计、模拟、制造和测试K a-乐队。圆孔直径为 405 mm ( $27\λ$ ),透射面的厚度为 3.18 mm ( $0.2\λ$ )。所设计的发射阵列在 19.4 GHz 处测得的峰值增益为 36.1 dBic,孔径效率为 60.2%,而测得的 1 dB 增益带宽为 9.5% (19.0–20.9 GHz)。
更新日期:2020-08-01
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