Antenna for tire pressure information sending apparatus and...

Details Antenna for tire pressure information sending apparatus and... Antenna for tire pressure information sending apparatus and...

2008-04-01

2008-04-01

Lee, Benjamin C. (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

C340S442000, C340S572700, C340S572800

Reexamination Certificate

active

11059190

ABSTRACT:
An antenna1for a tire pressure information sending apparatus is constituted by a circuit board provided with feeding electrodes and a radiation electrode8having a loop surface substantially perpendicular to the principal surface, the radiation electrode sending air pressure information of a tire onto a principal surface of the circuit board by radio waves. Thereby, when the apparatus is mounted on a wheel rim, a magnetic field vector parallel to the principal surface of the circuit board and parallel to the wheel rim is generated, and a direction of a magnetic field vector by a mirror effect to the wheel rim becomes the same as the direction of the magnetic field vector of the antenna. As a result, it is possible to effectively prevent that the antenna characteristic deteriorates.

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Chinese language office action and its English translation for corresponding Chinese application No. 200510009060.0 lists the reference above.

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