Patent ID: 6522291
Filing Date: 2003-02-18
Classification: G01S,H01Q

Abstract:
A GPS receiver comprising:a GPS antenna receiving high frequency satellite signals, said antenna comprising a patch and a ground plane; an analog circuit attached to a substrate that receives the high frequency satellite signal from the GPS antenna and processes said high frequency satellite signals into a digital signal; a digital circuit attached to the substrate that receives the digital signal from the analog circuit and processes said digital signal to compute positional coordinates of said GPS antenna; an interface connector attached to the substrate that receives the positional coordinates and outputs said positional coordinates to an external device; and an EMI (electromagnetic interference) shield which surrounds said substrate as well as at least said digital circuit on said substrate to block a noise developing at said digital circuit from interfering with said GPS antenna, said GPS antenna being directly mounted on said electromagnetic interference shield so as to define said ground plane only by said electromagnetic interface shield, said patch being electrically insulated from said electromagnetic interference shield.