Characteristic Modes Analysis of Non-Uniform Metasurface Superstrate for Nanosatellite Antenna Design

被引：46
作者：
Dicandia, Francesco Alessio [1 ]
Genovesi, Simone [1 ]
机构：
[1] Univ Pisa, Dipartimento Ingn Informaz, I-56122 Pisa, Italy
来源：
IEEE ACCESS | 2020年 / 8卷
关键词：
Characteristic modes; cubeSat; S-band; circular polarization; metasurface; PATCH ANTENNA; COMPACT; SATELLITES;
D O I：
10.1109/ACCESS.2020.3027251
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This work addresses the use of the Characteristic Modes Analysis (CMA) for tailoring a Metasurface (MTS) in view of exploiting it in compact, low-profile, Circularly Polarized (CP) antennas. The investigated non-uniform MTS is exploited as a superstrate in the design of a novel compact and low-profile antenna for nanosatellite applications. The MTS consists of a 3 x 4 array of unequal patches arranged in a rectangular lattice. The antenna parameters are carefully tailored by using the CMA to achieve a significant performance enhancement with respect to a uniform MTS in terms of both Axial Ratio (AR) bandwidth and aperture efficiency. The reliability of the CMA approach is verified by assessing the overall performance of the whole radiating structure comprising the stripline feeding excitation. The proposed MTS antenna is compact (0.068 lambda 0) provides a remarkable aperture efficiency going from 86 % up to 96 % and an AR coverage in the upper hemisphere greater than 84 % within the desired S-band (2.025 - 2.29 GHz).
引用
收藏
页码：176050 / 176061
页数：12
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