Abstract
A broadband metasurface antenna is proposed in this letter. The antenna is based on a nonperiodic metasurface. The modal behavior of the metasurface and the slot is analyzed using characteristic modes analysis (CMA). Three desired modes of the metasurface are found. Furthermore, the slot acts not only as a feeding structure but also as a metasurface-loaded antenna. By combining the three modes of the metasurface and the modes of the slot, the wide bandwidth is achieved under multimode resonance. To verify the design, the proposed metasurface antenna is simulated, fabricated, and tested. The results show that the proposed metasurface antenna achieves a wide impedance bandwidth above 79% and a wide 3 dB realized gain bandwidth of 77%.
| Original language | English |
|---|---|
| Article number | 9473016 |
| Pages (from-to) | 1696-1700 |
| Number of pages | 5 |
| Journal | IEEE Antennas and Wireless Propagation Letters |
| Volume | 20 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sept 2021 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2002-2011 IEEE.
Funding
This work was supported in part by the National Natural Science Foundation of China under Grant 61871079, Grant 61801097, Grant 62031010, and Grant 61721001; and in part by the Fundamental Research Funds for the Central Universities under Grant ZYGX2019Z009.
Keywords
- Broadband
- characteristic modes analysis (CMA)
- metasurface antenna
- multimodes resonance