High power, low profile, broadband antenna

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 comprises a rod shaped center conductor;
• and
• a shunt tuning stub electrically connected to the feed line and to the front wall of the enclosure to short circuit the shunt tuning stub to the front wall.

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 shaped feed line mounted within the cavity and extending across the slot to couple RF energy between the slot and the shaped feed line, and wherein the shaped feed line comprises a rod shaped center conductor;
• a radio frequency (RF) connector mounted in the front wall and electrically coupled to the shaped feed line to transmit and receive the RF energy, wherein the RF connector comprises a transition section including a predefined shape to transition from a coaxial feed point to the shaped feed line;
• and
• a shunt tuning stub electrically connected to the feed line and to the front wall of the enclosure.