Communications: radio wave antennas – Antennas – With vehicle
Reexamination Certificate
2005-08-09
2005-08-09
Wimer, Michael C. (Department: 2828)
Communications: radio wave antennas
Antennas
With vehicle
C343S713000, C343S767000
Reexamination Certificate
active
06927735
ABSTRACT:
A radio antenna arrangement disposed in the conductive surface of a vehicle consisting of a substantially rectangular aperture having aperture length L and width B, wherein said aperture length L is sufficiently small so that the self-resonant frequency of the aperture is greater than the center frequency of the operating frequency range. There is a capacitive tuning element disposed in the aperture for tuning the aperture to a resonant frequency to approximately the center frequency of the operating frequency range. The capacitive tuning element serves as capacitive connection between the edges of the aperture, and is formed as a low-inductance element, so that due to the residual inductive effect, the remaining magnetic reactive power is as small as possible relative to the magnetically generated reactive power from the magnetic fields in the aperture. An input coupling element is also disposed in the aperture for coupling the antenna connection point to the resonance like high electromagnetic fields.
REFERENCES:
patent: 4737795 (1988-04-01), Nagy et al.
patent: 195 35 250 (1997-03-01), None
Hopf Jochen
Lindenmeier Heinz
Reiter Leopold
Collard & Roe P.C.
FUBA Automotive GmbH & Co. KG
Wimer Michael C.
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