Abstract: Systems and methods are directed to configuring antenna systems. An antenna system may be coupled to a first communication unit and may be responsive to another communication unit. The first communication unit may alter its antenna system to accommodate various attributes of both units. The first communication unit may have a plurality of antennae which may be configured to be driven actively, deactivated completely, or tuned and driven in a parasitic mode. By configuring the antenna system, the range of the antenna system may be increased, the power to drive the antenna system may be decreased, and other various attributes of the communication system may be accommodated.

Abstract: Systems and methods are directed to configuring antenna systems. An antenna system may be coupled to a first communication unit and may be responsive to another communication unit. The first communication unit may alter its antenna system to accommodate various attributes of both units. The first communication unit may have a plurality of antennae which may be configured to be driven actively, deactivated completely, or tuned and driven in a parasitic mode. By configuring the antenna system, the range of the antenna system may be increased, the power to drive the antenna system may be decreased, and other various attributes of the communication system may be accommodated.

Abstract: A low-profile, planar antenna structure includes a planar dielectric substrate, a ground plane disposed on an underside of the planar dielectric substrate; a circular planar radiating element disposed on an upper side of the planar dielectric substrate; and four arc-shaped parasitic elements evenly spaced apart and surrounding the circular planar radiating element, the four-arc shaped parasitic elements and the circular planar radiating element configured to operate together as a first planar antenna, a second planar antenna, and a patch antenna. The planar antenna structure may include four notches formed in the circular planar radiating element and extending, from four respective evenly-spaced points on a circumference of the circular planar radiating element, radially inward toward a center of the circular planar radiating element.