Patent ID: 11862854
Assignee: THE FLORIDA INTERNATIONAL UNIVERSITY BOARD OF TRUSTEES
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. An antenna element, comprising:
a substrate;
a feeding source disposed on the substrate;
a driven patch disposed on the substrate and electrically connected to the feeding source;
a parasitic patch disposed on the substrate and physically separated from the driven patch by a first gap; and
a bottom conductive layer disposed under the substrate, such that the substrate is disposed between the bottom conductive layer and the driven patch;
wherein the driven patch comprises:
a main patch;
an inset feedline extending in a first direction from the main patch towards the feeding source;
a first extension portion extending in the first direction from the main patch towards the feeding source, and being physically spaced apart from the feeding source;
a second extension portion extending in the first direction from the main patch towards the feeding source, and being physically spaced apart from the feeding source;
a first outer cutout portion on a first side thereof facing the feeding source; and
a second outer cutout portion on the first side thereof;
the inset feedline being physically spaced apart, in a second direction perpendicular to the first direction and parallel to an upper surface of the substrate, from the first extension portion by a first inner cutout portion and from the second extension portion by a second inner cutout portion,
the inset feedline being disposed between, in the second direction, the first outer cutout portion and the second outer cutout portion;
wherein a length of the parasitic patch, taken in the first direction, is smaller than a length of the driven patch, taken in the first direction,
the driven patch being disposed between, in the first direction, the feeding source and the parasitic patch;
wherein the feeding source comprising a coplanar waveguide (CPW) comprises a first source patch, a second source patch, and a source microstrip feedline,
the source microstrip feedline being electrically connected to the driven patch,
the source microstrip feedline being disposed between, in the second direction, the first source patch and the second source patch,
the source microstrip feedline being physically separated from the first source patch by a second gap and physically separated from the second source patch by a third gap,
the first source patch comprising a first through hole and a first via filled in the first through hole,
the second source patch comprising a second through hole and a second via filled in the second through hole,
the first via and the second via each extending through the substrate and being electrically connected to the bottom conductive layer,
the second gap and the third gap each being smaller than the first gap;
wherein the first gap is 10% or less than the length of the parasitic patch, taken in the first direction,
a width of the parasitic patch, taken in the second direction perpendicular to the first direction and parallel to the upper surface of the substrate, being larger than a width of the driven patch, taken in the second direction,
a first upper surface of the first source patch and second upper surface of the second source patch being coplanar with each other, and
wherein the antenna element is a dual band antenna for operation at a first frequency of 78 gigahertz (GHz) and a second frequency of 94 GHz.