Abstract
This letter presents an efficient particle swarm optimization (PSO) algorithm developed to design a near-field time-delay equalizer metasurface (TDEM) for the purpose of improving directivity and radiation patterns of classical electromagnetic band-gap resonator antennas. Triple layers of conductive printed patterns in the metasurface were optimized by the PSO algorithm to systematically design the TDEM. Predicted and measured results show a significant improvement in antenna performance including 9.6 dB enhancement in antenna directivity, lower sidelobes, and higher gain. The measured directivity of the prototype is 21 dBi, and 3-dB bandwidth is 11.8%.
Original language | English |
---|---|
Pages (from-to) | 912-915 |
Number of pages | 4 |
Journal | IEEE Antennas and Wireless Propagation Letters |
Volume | 16 |
DOIs | |
Publication status | Published - 2017 |
Keywords
- Electromagnetic band-gap (EBG)
- electromagnetic band-gap resonator antenna (ERA)
- Fabry-Perot resonator antenna (FPRA)
- high gain
- near-field phase transformation
- particle swarm optimization (PSO)
- propagation time
- time-delay equalizer metasurface (TDEM)