Patent ID: 11888218
Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. A method of radiating electromagnetic waves from a monopole, dipole or patch antenna comprising one or two planar metal pieces formed on a top surface of a substrate, the method comprising:
applying a ground potential to a ground plane formed on a bottom surface of the substrate;
supplying an electrical signal to the one or two metal pieces through an off-center metal feed formed in the substrate, said metal feed being orthogonally connected to the one or two metal pieces;
applying the ground potential to a planar metal shield structure formed on the top surface of the substrate, wherein the metal shield structure is electrically separated from the one or two metal pieces on four sides; and
applying the ground potential to a plurality of tubs formed in the substrate and symmetrically enclosing the one or two metal pieces on four sides, wherein interior sides of the tubs are electroplated to form conductive walls around the one or two metal pieces, such that the conductive walls reflect surface waves in a tub region formed between the conductive walls of the antenna;
wherein said one or two metal pieces are arranged on a center region of the top surface.