Abstract
A low-profile circularly polarized (CP) omnidirectional metasurface antenna is developed and integrated with solar cells. The proposed metasurface consists of an array of 4 × 4 square rings. Square solar cells are mounted inside each square ring. Characteristic mode analysis (CMA) is used to analyze the modal behavior of the metasurface. The results demonstrate that the solar cells inside the square rings have a slight influence on the metasurface antenna. This arrangement not only enables total exposure of the solar cells to sunlight but also exhibits no degradation of performance of the antenna. Then, by using a proper feeding structure to excite the selected modes, the CP omnidirectional radiation pattern is realized. The proposed antenna, with and without solar cells, is fabricated and measured. The results demonstrate that the proposed antenna with and without solar cells realizes a similar impedance bandwidth and a similar CP bandwidth. Furthermore, the radiation efficiencies of the metasurface antennas with and without solar cells are similar.
| Original language | English |
|---|---|
| Pages | 4155-4160 |
| Number of pages | 6 |
| Volume | 68 |
| No. | 5 |
| Specialist publication | IEEE Transactions on Antennas and Propagation |
| DOIs | |
| Publication status | Published - May 2020 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 1963-2012 IEEE.
Funding
This work was supported in part by the National Natural Science Foundation of China under Grant 61721001 and 61871079, in part by the Sichuan Science and Technology Program under Grant 2018GZ0230 and 2018JY0554, and in part by the Fundamental Research Funds for the Central Universities under Grant ZYGX2019Z009. (Corresponding author: Yong Xiang.) S. Liu, X. Zhang, and Y. Xiang are with the School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China (e-mail: [email protected]).
Keywords
- Circularly polarized (CP) antenna
- metasurface
- omnidirectional
- solar cell