Patent ID: 7570219

Claim:
A guided projectile; comprising: a projectile, said projectile including a global positioning system receiver and a housing; and a dielectric resonator antenna, said dielectric resonator antenna being coupled to said projectile wherein said housing of said projectile provides a ground plane for said dielectric resonator antenna, said dielectric resonator antenna comprising: a plurality of feeds, said plurality of feeds including a first feed, a second feed and a third feed; a dielectric cap surrounding said plurality of feeds and coupled to said housing of said projectile, said dielectric cap being conical-shaped and forming a front end nose of said projectile, said plurality of feeds being placed an equidistant distance from a center of the dielectric cap, wherein said plurality of feeds are capable of exciting two orthogonal modes for emitting circularly polarized radiation, said second feed being placed approximately 120 degrees from said first feed, said third feed being placed approximately 120 degrees from said second feed, said second feed being phased approximately 120 degrees differently than said first feed; said third feed being phased approximately 120 degrees differently than said second feed.