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US 5,631,659 AGranted
Microstrip patch antennas with radiation control
AssigneeLucent Technologies Inc.
InventorsJames G. Evans, Martin V. Schneider, Robert W. Wilson
Life of this patent
Estimating the term…
Abstract
In a resonator in which a ground plane and a patch sandwich a dielectric, a slot in the patch concentrates emanation of radiation from the slot. Shorting conductors form the ends of the resonator. A dielectric cover over the slot matches the dielectric constant of the substrate to that of free space. Quarter-wave chokes at the ends of the resonator suppress currents in the ground plane.
Claims18
A microstrip antenna, comprising:
- a resonator having
- a dielectric substrate,
- a conductive ground plane, and
- a conductive patch,
- said ground plane and said patch sandwiching said dielectric substrate;
- and
- a radiating slot dividing said patch into two separate portions;
- said patch having an overall length along one direction, said slot being dimensioned such that each of said portions has a fixed length along the one direction equal substantially to one half the overall length;
- said resonator including a pair of ends, one at each portion, and a pair of waveguide forming conductors each shorting an end to the ground plane such that the resonator forms a slotted waveguide;
- and
- a pair of chokes each extending from a respective one of said ends in a direction away from the slot.
8 more elements
Dependencies are inferred from the claim text.