Antenna for transponder
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United States of America Patent
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Apr 26, 2005
Grant Date -
Jun 26, 2003
app pub date -
Aug 6, 2002
filing date -
Feb 8, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Antenna for sending and receiving microwave radiation, e.g. for use in a transponder in a transponder system for wireless payment of tolls, or the like. It has an excited antenna element (13) placed on a dielectric antenna carrier or substratum (11), e.g. on a printed circuit board laminate with a copper covered plastic basis suitable for manufacturing of so-called printed circuits. To increase the performance of the antenna for high production rates with cheap materials, the antenna element is placed such that it gets a directional effect mainly perpendicular to a bearing plane (12) of the substratum (11).
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