Communications: radio wave antennas – Antennas – Wave guide type
Reexamination Certificate
2011-07-05
2011-07-05
Phan, Tho G (Department: 2821)
Communications: radio wave antennas
Antennas
Wave guide type
C343S846000
Reexamination Certificate
active
07973732
ABSTRACT:
Antennas suitable for wideband transmission and reception are disclosed that are useful in environments susceptible to vibration and impact motion such as for example vehicles of various types, e.g., automobiles, trains, etc. The apparatus can include a bicone antenna including two cone-shaped elements. The physical shape of at least one of the two cone-shaped elements may be at least partially defined by one or more pleats (e.g., a series) that extend about a portion of the cone. An antenna can further includes a mast for supporting the bicone as well as a second antenna section including a fractalized dipole. The fractalized dipole can be configured as a conformal circuit board conforming to the shape of the mast and can include self-similar portions or extensions. The antenna may also include a counterpoise to balance the electrically conductive conformal portion. The counterpoise may be defined substantially by a repetitive tooth-like pattern.
REFERENCES:
patent: 7456799 (2008-11-01), Cohen
Fractal Antenna Systems, Inc.
McDermott Will & Emery LLP
Phan Tho G
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