Patent ID: 7009564

Claim:
A TM microstrip antenna mounted on a projectile comprising: (a) a first rectangular shaped dielectric layer; (b) a plurality of rectangular shaped antenna elements mounted on an upper surface of said first dielectric layer, said antenna elements being aligned with one another and fabricated from copper, said antenna elements being adapted to transmit telemetry data at a frequency of approximately 2.25 GHz; (c) an antenna feed network mounted on a bottom surface of said first dielectric layer, said antenna feed network having a main transmission line connected to a signal input for said TM microstrip antenna, said feed network having a plurality of branch transmission lines connected to said main transmission line and each of said antenna elements, each of said branch transmission lines including a plurality of probes, one of said probes being positioned underneath one antenna element of said plurality of antenna elements to capacitively couple said one antenna element to said feed network, resulting in a linear polarization and an omni-directional radiation pattern being generated by said antenna elements of said TM microstrip antenna; and (d) a pair of identical filters integrally formed within said main transmission line, each of said pair of identical filters being tuned at a GPS frequency of approximately 1.575 GHz to provide for a minimum isolation of 50 dB.