Patent ID: 6967620
Filing Date: 2005-11-22
Classification: H01Q

Abstract:
1. A microstrip antenna for use on a projectile comprising: a dielectric substrate positioned on said projectile; a generally rectangular shaped antenna element mounted on said dielectric substrate, said antenna element transmitting an S-Band radio frequency signal; a pair of elongated mode suppression slots located within said antenna element, said pair of mode suppression slots being positioned parallel to one another within said antenna element, said pair of mode suppression slots being orientated in a direction for surface current flow on said antenna element to provide for substantial isolation for said antenna element from an L-Band radio frequency signal whenever said microstrip antenna receives said L-1 Band radio frequency signal from an external source; and a plurality of equally spaced apart vias said plurality of vias being aligned adjacent one elongated edge of said antenna element, said plurality of vias allowing said antenna element to operate as a grounded ¼ wavelength radiating antenna by shorting said antenna element to a ground plane positioned below said dielectric substrate.