LENS WITH MIXED-ORDER CAUER/ELLIPTIC FREQUENCY SELECTIVE SURFACE

摘要

An apparatus includes a lens having a plurality of layers of conductive elements and a plurality of layers of dielectric. Each of the layers of dielectric is disposed between and in contact with two of the layers of conductive elements. Different layers of conductive elements can include different numbers of conductive elements. The layers of conductive elements and the layers of dielectric can form a Cauer/Elliptic frequency selective surface. The lens could include only three layers of conductive elements and only two layers of dielectric, where the lens is a mixed-order frequency selective surface with a middle layer of conductive elements having fewer conductive elements than outer layers of conductive elements. A size of the conductive elements in at least one of the layers of conductive elements could vary as distance from a center of the lens increases.

主权项

1. An apparatus comprising:
a lens comprising a plurality of layers of conductive elements and a plurality of layers of dielectric, each of the layers of dielectric disposed between and in contact with two of the layers of conductive elements.