metallic lens

metallic lens

n
(General Physics) an arrangement of louvres used to direct and focus electromagnetic or sound waves
References in periodicals archive ?
This paper presents a new low-profile metallic lens antenna formed by twelve metallic rings distributed in a single layer and arranged along a ring, as illustrated in Figure 1.
To do so, the metallic lens is illuminated by a plane wave using the full-wave electromagnetic tool CST [21].
An open-ended waveguide with a resonant ring is used as the primary feed for the metallic lens. The resulting structure improves the maximum directivity with respect to the feeder along a large bandwidth (more than 5 dB) and provides a good crosspolar level (better than -35 dB).
Engheta, "e-nearzero graded index structure as a bi-concave metallic lens using stacked rectangular near cutoff waveguides," 7th European Conference on Antennas and Propagation (EuCAP), 2535-2537, Gothenburg, Sweden, Apr.
Navarro-Cia, "Ultra-compact planoconcave zoned metallic lens based on the fishnet metamaterial," Applied Physics Letters, vol.
Navarro-Cia, "Exploiting the dispersion of the double-negative-index fishnet metamaterial to create a broadband low-profile metallic lens," Optics Express, vol.
In these early stages metallic lens antennas such as metal-lens antennas and wire-grid lens antennas [1], reflector lens antennas [2], spherical antennas [3], dual lens antennas [4], as well as dielectric lens antennas [5], and substrate lens antennas [6] were successfully investigated.