Driver of a magnetic-field sending antenna with RLC circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 17, 2002
Grant Date -
Feb 7, 2002
app pub date -
Apr 18, 2001
filing date -
Apr 19, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The electronic circuit which is intended to feed a magnetic field sending coil has a first input terminal (1) for receiving a power-supply voltage (Uhat), a second input terminal (2) for receiving a periodic control signal (SC) within a predefined frequency range, an output terminal (4) for generating an output current (I) in sending coil (L) connected between the output terminal (4) and earth (M), in such a way as to convert the periodic control signal into a periodic magnetic field sent out by a coil. In this electronic circuit, a series RLC circuit (RLCI) is connected between the output terminal (4) and earth in order to form a tuned antenna with the sending coil (L). Such a configuration makes it possible to send out magnetic field according to an extended pattern so that a receiver unit has a better sensitivity.
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Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- H01Q Class
- 1.51 % this patent is cited more than
- 23 Age
