Patent ID: 6717549
Filing Date: 2004-04-06
Classification: H01Q

Abstract:
A proximity-fed, stacked patch antenna comprising:a ground plane layer; a dielectric substrate overlying the ground plane layer; an active patch antenna element disposed on the dielectric substrate and having an outer edge; a parasitic patch antenna element supported in spaced relation to the active patch antenna element; and dual feed lines separate from each other and spaced from and field-coupled to the active patch antenna element and extending toward the center of the active patch antenna element, each feed line having a tuning stub generally orthogonal to each other and each located in close proximity to the outer edge of the active patch antenna element to establish an additional resonant frequency between a resonant frequency of the active patch antenna element and resonant frequency of the parasitic patch antenna element, wherein the dual feed lines are configured to provide dual polarization and minimize coupling between the feed lines.