Patent ID: 8274439

Claim:
An antenna, comprising: an enclosure including a front wall and a back wall opposite to the front wall, and a front face and a back face opposite to the front face, wherein both the front face and the back face extend between the front wall and the back wall to form a cavity within the enclosure, and wherein the enclosure further includes a slot formed in the front face to form a cavity backed slot; a radio frequency (RF) connector mounted in the front wall; a shaped feed line mounted within the cavity, the shaped feed line being electrically coupled to the RF connector to transmit and receive RF energy, and wherein the shaped feed line extends across the slot to couple the RF energy between the slot and the shaped feed line, and wherein the shaped feed line has a predetermined structure to substantially reduce an electric field strength to improve power handing of the antenna; a tee section electrically connected to the shaped feed line; and a shunt tuning stub electrically connected to the tee section and to the front wall of the enclosure to short circuit the shunt tuning stub to the front wall, wherein the tee section and the shunt tuning stub include a selected length and diameter to tune the antenna to a desired antenna bandwidth.