Transmission unit and method for transmitting an information item, in particular for an anti-theft protection system of a motor vehicle
First Claim
1. A transmission unit, comprising:
- a generator for generating a sinusoidal carrier oscillation;
a modulator connected to said generator for modulating an information item to be transmitted onto said carrier oscillation into a modulated oscillation;
a transformer connected to said modulator, said transformer having a primary side and a secondary side for transforming said modulated oscillation from said primary side to said secondary side; and
a plurality of antennas connected to said secondary side for generating respective electromagnetic fields and aiding a transmission of the information item.
1 Assignment
0 Petitions
Accused Products
Abstract
A transmission unit includes a sine-wave generator that generates a carrier oscillation. A binary information item is modulated onto the carrier oscillation in a modulator. The modulated oscillation is fed to a transformer that forwards the modulated oscillation to a plurality of antennas connected in parallel. A method for transmitting an information item includes providing a generator having a primary side and a secondary side, a modulator, a transformer, and a plurality of antennas. The plurality of antennas is connected to the secondary side of the transformer. An information item to be transmitted is created. A sinusoidal carrier oscillation is generated. The information item is modulated onto the carrier oscillation and forms a modulated oscillation. The modulated oscillation is transformed from the primary side to the secondary side and an electromagnetic field is generated by the plurality of antennas to aid transmission of the information item. The transmission unit and the method for transmitting provide little interference radiation. The transmission unit and the method for transmitting may be used for an anti-theft protection system of a motor vehicle.
5 Citations
16 Claims
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1. A transmission unit, comprising:
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a generator for generating a sinusoidal carrier oscillation;
a modulator connected to said generator for modulating an information item to be transmitted onto said carrier oscillation into a modulated oscillation;
a transformer connected to said modulator, said transformer having a primary side and a secondary side for transforming said modulated oscillation from said primary side to said secondary side; and
a plurality of antennas connected to said secondary side for generating respective electromagnetic fields and aiding a transmission of the information item. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14, 15)
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8. A transmission unit of an anti-theft protection system of a motor vehicle, comprising:
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a generator for generating a sinusoidal carrier oscillation;
a modulator connected to said generator for modulating an information item to be transmitted onto said carrier oscillation into a modulated oscillation;
a transformer connected to said modulator and having a primary side and a secondary side for transforming said modulated oscillation from said primary side to said secondary side; and
a plurality of antennas connected to said secondary side for generating respective electromagnetic fields and aiding a transmission of the information item.
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9. A method for transmitting an information item, comprising:
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providing a generator having a primary side and a secondary side, a modulator, a transformer, and a plurality of antennas;
connecting the plurality of antennas to the secondary side of the transformer;
creating an information item to be transmitted;
generating a sinusoidal carrier oscillation;
modulating the information item onto the carrier oscillation and forming a modulated oscillation;
transforming the modulated oscillation from the primary side to the secondary side; and
generating respective electromagnetic fields with the plurality of antennas to aid transmission of the information item. - View Dependent Claims (10, 11, 12, 13)
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16. A method for transmitting an information item in an anti-theft protection system of a motor vehicle, comprising:
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providing a generator having a primary side and a secondary side, a modulator, a transformer, and a plurality of antennas;
connecting the plurality of antennas to the secondary side of the transformer;
creating an information item to be transmitted;
generating a sinusoidal carrier oscillation;
modulating the information item onto the carrier oscillation and forming a modulated oscillation;
transforming the modulated oscillation from the primary side to the secondary side; and
generating respective electromagnetic fields with the plurality of antennas to aid transmission of the information item.
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Specification