Dielectric lens antennas are attracting the attention of researchers for applications at higher frequencies due to their high radiation capability, low side lobe levels, and simple structure. This ...

A double-layer geodesic lens consists of two layers of flat or curved parallel-plate waveguides, connected by a mirror over part of their common periphery. Such a device can provide one focus on each ...

Wafer Lens Boosts X-ray Beam Size 3,400-Fold Nagoya University Using only a single-crystal piezoelectric thin wafer of lithium niobate (LN) instead of the usual two-part structure, a group from Nagoya ...