Abstract
Reduction of first side-lobe level (SLL) and nulls in artificial fishnet metalenses is accomplished here by applying the reference phase concept along with the zoning technique. Higher focusing efficiency is achieved for a specific reference phase when comparing numerically and experimentally four different designs. For such best design, an improvement of the first SLL (∼ 2.4 dB), first null (∼ 13 dB), and gain (∼ 77 dB) is achieved experimentally compared to the design without reference phase.
Original language | English |
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Article number | 7106461 |
Pages (from-to) | 3710-3714 |
Number of pages | 5 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 63 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1 Aug 2015 |
Keywords
- fishnet metamaterial
- Fresnel zoning
- lens antennas
- millimeter-waves
- Zoned lenses
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics