de Cos Gómez María Elena, Fernández Álvarez Humberto, Flórez Berdasco Alicia, Las-Heras Andrés Fernando
TSC, Electrical Engineering Department, University of Oviedo, 33203 Gijón, Spain.
Materials (Basel). 2023 Mar 23;16(7):2553. doi: 10.3390/ma16072553.
Three metasurfaces (MTS) are designed to be combined with a series end-fed 1 × 10 array antenna with a modified Dolph-Chebyshev distribution for imaging applications in the millimeter frequency range, 24.05-24.25 GHz. A reduction in secondary lobes and an increase in FTBR can be achieved while preserving gain, radiation efficiency, SLL and size using an MTS-array combination. Moreover, as a result of each single-layer MTS-array combination, operation bandwidth is widened, with gain and radiation efficiency enhancement. The overall devices' size is 86.8 × 12 × 0.762 mm. The envisioned application is collision avoidance in aid to visually impaired people at a medium-long distance.
设计了三种超表面（MTS），将其与具有改进的多尔夫-切比雪夫分布的串联端馈1×10阵列天线相结合，用于24.05-24.25GHz毫米波频率范围内的成像应用。使用MTS-阵列组合，可以在保持增益、辐射效率、旁瓣电平（SLL）和尺寸的同时，实现旁瓣的降低和前后比（FTBR）的增加。此外，由于每个单层MTS-阵列组合，工作带宽得以拓宽，增益和辐射效率得到提高。整个器件的尺寸为86.8×12×0.762mm。设想的应用是在中长距离辅助视障人士进行碰撞避免。
