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首页> 外文期刊>IEEE Transactions on Antennas and Propagation >1 Bit Dual-Linear Polarized Reconfigurable Transmitarray Antenna Using Asymmetric Dipole Elements With Parasitic Bypass Dipoles
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1 Bit Dual-Linear Polarized Reconfigurable Transmitarray Antenna Using Asymmetric Dipole Elements With Parasitic Bypass Dipoles

机译：1位双线性偏振可重新配置传输天线，使用不对称偶极元素与寄生旁路偶极子

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摘要

Reconfigurable transmitarray antennas with independent dual-linear polarization phase controlling capability are essential for wireless communications applications. This work proposes a novel 1 bit transmitarray element design at Ku-band, which adopts the receiver-transmitter structure with an active receiving dipole and a passive asymmetric transmitting dipole. The 1 bit phase shift is achieved by alternating two p-i-n diodes integrated on the active dipole to reverse its current direction. To mitigate the influence of p-i-n diodes and reduce the element insertion loss, a parasitic bypass dipole is added next to each dipole. Element simulations show that a low loss of only 1.0 dB is achieved. The dual-linear polarization capability is obtained by orthogonally interlacing two sets of proposed receiver-transmitter structures. A 100-element transmitarray prototype is designed, fabricated, and measured. The measured gain is 18.3 dB at 12.2 GHz, corresponding to an aperture efficiency of 22.6%. The 2-D beam-scanning capability for independent dual-linear polarization is experimentally verified and the scan angle covers +/- 50 degrees. The measured maximum scan gain loss is 2.9 and 3.5 dB in the two principal planes, respectively.
机译：具有独立双线性偏振相控制能力的可重新配置的传输阵列天线对于无线通信应用是必不可少的。这项工作提出了Ku波段的新颖1位传输阵列元件设计，其采用具有主动接收偶极的接收器 - 发射器结构和无源不对称传输偶极子。通过在活动偶极上的两个P-I-N二极管交替以反转其电流方向来实现1位相移。为了减轻P-I-N二极管的影响并降低元件插入损耗，在每个偶极子下方添加寄生旁路偶极子。元素模拟表明，实现了低损耗仅为1.0 dB。通过正交交织两组提出的接收器 - 发射器结构获得双线性偏振能力。设计，制造和测量100元件传输阵列原型。测量的增益为18.3dB，12.2GHz，对应于光圈效率为22.6％。实验验证了独立双线极化的2-D光束扫描能力，扫描角度覆盖+/- 50度。两个主要平面分别测量的最大扫描增益损耗分别为2.9和3.5 dB。

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