Communications: radio wave antennas – Antennas – Slot type
Reexamination Certificate
2005-02-01
2005-02-01
Wimer, Michael C. (Department: 2821)
Communications: radio wave antennas
Antennas
Slot type
Reexamination Certificate
active
06850203
ABSTRACT:
An antenna apparatus (10) includes an antenna element (12, 412, 512) that has conductive material with a recess therein. The recess includes a balun hole (36, 536), and a tapered slot (37, 537) communicating at its narrow end with the balun hole. The balun hole is approximately rectangular, has a peripheral edge defined by conductive material, and contains air. The tapered slot has a shape which is optimized as a function of factors that include the balun hole design. Each slot edge follows a predetermined curve other than a first-order exponential curve.
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Hodges Richard E.
Irion II James M.
Schuneman Nicholas A.
Baker & Botts L.L.P.
Wimer Michael C.
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