Communications: radio wave antennas – Antennas – Slot type
Reexamination Certificate
2006-05-30
2006-05-30
Wong, Don (Department: 2821)
Communications: radio wave antennas
Antennas
Slot type
C343S770000
Reexamination Certificate
active
07053847
ABSTRACT:
A phased array antenna structure capable of operation at millimeter-wave frequencies and having multiple ring slot radiator elements (10). The RF feed structure for each radiator element includes a feed via (28) extending part-way through a multi-layer structure (FIG. 3) on which the radiator elements (10) are formed and a strip line feed probe (30) extending from the via (28) toward the radiator element. A key feature facilitating high-frequency operation is the inclusion of multiple mode suppressors (32) surrounding the via (28) and providing a smooth transition from a coaxial mode of RF transmission to a strip line mode of RF transmission. The feed probe (30) is tailored to provide either a narrow-band or a wideband frequency characteristic.
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Bhattacharyya Arun
Chan Steven S.
Metzen Phillip L.
Rivera Juan
Wu Te Kao
Al-Nazer Leith
Northrop Grumman Corporation
Patti & Brill LLC
Wong Don
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