Patent ID: 6014105
Filing Date: 2000-01-11
Classification: H01Q

Abstract:
A one half wavelength microstrip antenna having an internal feed comprising:a disc shaped dielectric substrate;a ground plane affixed to a bottom surface of said disc shaped dielectric substrate;a substantially rectangular shaped copper radiating element mounted on a top surface of said disc shaped dielectric substrate;a contact pin electrically connected to said copper radiating element, said contact pin being positioned a predetermined distance from a center point of said copper radiating element, said contact pin extending downward from said copper radiating element through said dielectric substrate to a bottom surface of said ground plane;a coaxial cable connecter attached to the bottom surface of said ground plane, said coaxial cable connector being electrically connected to said contact pin; anda V-shaped element of etched copper located within said copper radiating element, said V-shaped element of etched copper including a rounded bottom, the rounded bottom of said V-shaped element of etched copper having an inner edge positioned adjacent said contact pin;a portion of said copper radiating element located within said V-shaped element of etched copper forming a transmission line, said transmission line electrically connecting said contact pin to an antenna feed point for said copper radiating element of said microstrip antenna.