RFID system
First Claim
Patent Images
1. An RFID antenna assembly configured to be energized with a carrier signal, the RFID antenna assembly comprising:
- an inductive component including a loop antenna assembly, wherein the circumference of the loop antenna assembly is no more than 25% of the wavelength of the carrier signal; and
at least one capacitive component coupled to the inductive component,wherein the at least one capacitive component includes a first capacitive component configured to couple a port on which the carrier signal is received and a ground,wherein the inductive component is configured to be positioned proximate a first slot assembly to detect the presence of a first RFID tag assembly within the first slot assembly and not detect the presence of a second RFID tag assembly within a second slot assembly that is adjacent to the first slot assembly.
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Accused Products
Abstract
A magnetic field focusing assembly includes a magnetic field generating device configured to generate a magnetic field, and a split ring resonator assembly configured to be magnetically coupled to the magnetic field generating device and configured to focus the magnetic field produced by the magnetic field generating device.
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Citations
16 Claims
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1. An RFID antenna assembly configured to be energized with a carrier signal, the RFID antenna assembly comprising:
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an inductive component including a loop antenna assembly, wherein the circumference of the loop antenna assembly is no more than 25% of the wavelength of the carrier signal; and at least one capacitive component coupled to the inductive component, wherein the at least one capacitive component includes a first capacitive component configured to couple a port on which the carrier signal is received and a ground, wherein the inductive component is configured to be positioned proximate a first slot assembly to detect the presence of a first RFID tag assembly within the first slot assembly and not detect the presence of a second RFID tag assembly within a second slot assembly that is adjacent to the first slot assembly. - View Dependent Claims (2, 3)
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4. An RFID antenna assembly configured to be energized with a carrier signal, the RFID antenna assembly comprising:
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an inductive component including a multi-segment loop antenna assembly, wherein the multi-segment loop antenna assembly includes; at least a first antenna segment including at least a first phase shift element configured to reduce the phase shift of the carrier signal within the at least a first antenna segment, and at least a second antenna segment including at least a second phase shift element configured to reduce the phase shift of the carrier signal within the at least a second antenna segment, wherein the length of each antenna segment is no more than 25% of the wavelength of the carrier signal; and at least one matching component configured to adjust the impedance of the multi-segment loop antenna assembly. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. An RFID antenna assembly configured to be energized with a carrier signal, the RFID antenna assembly comprising:
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an inductive component including a multi-segment loop antenna assembly, wherein the multi-segment loop antenna assembly includes; at least a first antenna segment including at least a first phase shift element configured to reduce the phase shift of the carrier signal within the at least a first antenna segment, and at least a second antenna segment including at least a second phase shift element configured to reduce the phase shift of the carrier signal within the at least a second antenna segment, at least one far field antenna assembly; wherein the length of each antenna segment is no more than 25% of the wavelength of the carrier signal; and at least one matching component configured to adjust the impedance of the multi-segment loop antenna assembly. - View Dependent Claims (13, 14, 15, 16)
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Specification