Communications: radio wave antennas – Antennas – With vehicle
Reexamination Certificate
2006-12-19
2006-12-19
Wong, Don (Department: 2163)
Communications: radio wave antennas
Antennas
With vehicle
C343S793000, C340S442000, C152S152100
Reexamination Certificate
active
07151495
ABSTRACT:
A transponder to be fitted in or on a surface of an article which is substantially formed of a rubber product, in particular a transponder to be fitted in a tire, has a dipole antenna. The antenna length Lair, wherein air is exclusively present as the transmission medium, is calculated with the equation Lair=0.5×c/f, wherein c is the speed of light and f is the transmission frequency. In order to achieve a long transmission range, the transponder in the rubber product has an antenna length Lkpbetween 0.45×Lairand 0.90×Lair, preferably substantially between 0.61×Lairand 0.71×Lair.
REFERENCES:
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patent: 5818385 (1998-10-01), Bartholomew
patent: 6121932 (2000-09-01), McCoy et al.
patent: 6630910 (2003-10-01), Forster et al.
patent: 2003/0156024 (2003-08-01), Beckley
patent: 02/13309 (2002-02-01), None
Baumgarten Rainer
Behrends Holger
Campsheide Olaf
Fidan Sadettin
Jenke Roland
Cabucos Marie Antoinette
Continental Aktiengesellschaft
Greenberg Laurence A.
Locher Ralph E.
Stemer Werner H.
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