Based on simultaneous control of the phase and polarization, metallic waveguide transmiarray antennas (MWTAs) with a single feed are proposed to generate multibeams with both high gain and optional polarized states (circular, elliptical, or linear polarization) in the F-band. The phase delay of two orthogonal components can be adjusted in the full range of 0-360° by varying the dimension of each hole in the array. The Gerchberg-Saxton algorithm based on Fresnel diffraction theory is used to calculate the required phase distributions for generating multibeams, which are further achieved by the phase control of unit cells in the MWTA. The phase difference of the two orthogonal components is set to be π/2, which allows us to achieve the required radiating polarized states by selecting the polarization direction of the incident wave. As a proof of concept, the circularly polarized dual- and triple-beam MWTAs with a single feed are designed and simulated. The peak gains are up to ∼29 and ∼28 dBi, the axis ratios are lower than 1.9 dB and 1.6 dB, and the aperture efficiencies are 50.6% and 63.4%, respectively. According to the design, the MWTA prototypes are fabricated for generating the dual- and triple-beams. The measured results in the far field agree well with the simulation. The proposed MWTAs are very promising for applications in wireless and satellite communications in the terahertz and millimeter wave bands.

中文翻译：

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用于在 F 波段生成具有高增益和可选极化状态的多波束的金属波导发射阵列天线

基于相位和极化的同时控制，提出了具有单馈源的金属波导传输阵列天线 (MWTA)，以在 F 波段生成具有高增益和可选极化状态（圆形、椭圆形或线性极化）的多波束。通过改变阵列中每个孔的尺寸，可以在 0-360° 的整个范围内调整两个正交分量的相位延迟。基于菲涅耳衍射理论的 Gerchberg-Saxton 算法用于计算生成多光束所需的相位分布，这通过 MWTA 中晶胞的相位控制进一步实现。两个正交分量的相位差设置为π/2，这使我们能够通过选择入射波的偏振方向来实现所需的辐射偏振态。作为概念验证，设计并模拟了具有单馈源的圆偏振双光束和三光束 MWTA。峰值增益高达~29和~28 dBi，轴比低于1.9 dB和1.6 dB，孔径效率分别为50.6%和63.4%。根据设计，MWTA 原型用于生成双光束和三光束。远场测量结果与模拟吻合。所提议的 MWTA 在太赫兹和毫米波频段的无线和卫星通信中的应用非常有前景。根据设计，MWTA 原型用于生成双光束和三光束。远场测量结果与模拟吻合。所提议的 MWTA 在太赫兹和毫米波频段的无线和卫星通信中的应用非常有前景。根据设计，MWTA 原型用于生成双光束和三光束。远场测量结果与模拟吻合。所提议的 MWTA 在太赫兹和毫米波频段的无线和卫星通信中的应用非常有前景。