Antenna device, radio identification system and method for emitting a radio signal
First Claim
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1. An antenna device comprising:
- a radiating unit comprising a plurality of antennas, configured to emit a radio signal with a radiation pattern; and
a calculator configured to generate and apply to the plurality of antennas a plurality of feed signals based on an identification signal provided in order to generate the radio signal;
wherein the calculator is further configured to control the feed signals in a time-varying manner in order to emit the radio signal with a time-varying radiation pattern; and
wherein the calculator comprises a terminal and is configured to acquire the identification signal from an external radio identification reader at the terminal.
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Abstract
An antenna device has a radiating unit having a plurality of antennas, configured to emit a radio signal with a radiation pattern. In addition, the antenna device has a calculator configured to generate and to apply to the plurality of antennas a plurality of feed signals based on an identification signal provided in order to generate the radio signal. The calculator is additionally configured to control the feed signals in a time-varying manner so that the radio signal is emitted with a time-varying radiation pattern.
4 Citations
20 Claims
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1. An antenna device comprising:
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a radiating unit comprising a plurality of antennas, configured to emit a radio signal with a radiation pattern; and a calculator configured to generate and apply to the plurality of antennas a plurality of feed signals based on an identification signal provided in order to generate the radio signal; wherein the calculator is further configured to control the feed signals in a time-varying manner in order to emit the radio signal with a time-varying radiation pattern; and wherein the calculator comprises a terminal and is configured to acquire the identification signal from an external radio identification reader at the terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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acquiring an identification signal from an external radio identification reader at a terminal; emitting a radio signal which comprises a radiation pattern using a radiating unit comprising a plurality of antennas; generating a plurality of feed signals based on the identification signal and applying the feed signals to the plurality of antennas in order to generate the radio signal; and time-varyingly controlling the feed signals so that the radio signal is emitted with a time-varying radiation pattern.
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Specification