Antenna for an RFID reading apparatus and method for transmitting and/or receiving RFID signals
AssigneeSick AG
InventorFlorian PUDENZ
Life of this patent
Estimating the term…
Abstract
An antenna (100) for an RFID reading apparatus is provided having at least one single CLL antenna (10), wherein a single CLL antenna (10) is an antenna that has an inner antenna loop (12) and a capacitively loaded antenna loop (14) which surrounds the inner antenna loop (12) and into which a capacitance (16 is introduced. In this respect, the antenna (100) has a plurality of single CLL antennas (10a-d) that are differently oriented and has a feed circuit (26) to operate the single CLL antennas (10a-d) for generating a circular polarization with a respective phase offset.
Claims20
An antenna for an RFID reading apparatus having at least one single CLL antenna, wherein a single CLL antenna is an antenna that has an inner antenna loop and a capacitively loaded antenna loop which surrounds the inner antenna loop and into which a capacitance is introduced, wherein the antenna has a plurality of single CLL antennas that are differently oriented and has a feed circuit to operate the single CLL antennas for generating a circular polarization with a respective phase offset.
A method for transmitting and/or receiving RFID signals comprising an antenna that has at least one single CLL antenna, wherein a single CLL antenna is an antenna that has an inner antenna loop and a capacitively loaded conductor loop which surrounds the inner antenna loop and into which a capacitance is introduced, wherein a circular polarization is produced in that a plurality of single CLL antennas of the antenna that are differently oriented are operated by a feed circuit having a respective phase offset.
Dependencies are inferred from the claim text.