Multi-Dimensional Broadband Track and Trace Sensor Radio Frequency Identification Device
First Claim
1. An antenna for use with a radio frequency identification device, the antenna comprising at least one non-linear section.
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Abstract
A broadband antenna constructed according to the present invention for use with an RFID tag device is formed with a three dimensional (3D) structure. The 3D structure of the antenna enables the antenna to be constructed with a size smaller than that of conventional two-dimensional antennas, consequently reducing the size of the overall tag device, but without any loss of efficiency. The 3D antennas are formed with Archimedean spiral sections and can be tuned to a specific frequency in a particular frequency band, enabling many more unique RFID devices to be defined and operate within that band in conjunction with a reader utilizing a frequency-hopping method without interfering with one another. Additionally, the antenna can receive signals from a higher frequency band than the band in which the antenna resonates to enable those higher power signals to supply power to the device without interfering with the resonant frequency signals received by and transmitted from the RFID device.
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Citations
18 Claims
- 1. An antenna for use with a radio frequency identification device, the antenna comprising at least one non-linear section.
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6. A radio frequency identification device comprising:
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a) a tuning filter component including at least one resistor, at least one capacitor and at least one inductor;
b) a data storage component; and
c) a three-dimensional antenna including at least one non-linear component operably connected to the tuning filter component and the data storage component. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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17. A system for identifying items utilizing wireless signals, the system comprising:
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a) a plurality of radio frequency identification devices adapted to be secured to the items, each device including a tuning filter component, a data storage component for storing identifying information on the item, and a three-dimensional antenna, the device being tuned to a specific frequency within a first frequency band; and
b) a wireless signal generating and receiving device capable of operating in an adaptive, sequential or random frequency-hopping manner across the entire first frequency band to communicate with the plurality of devices using the resonant frequency for each of the plurality of devices, wherein the device includes a number of three-dimensional antennas tuned to a particular frequency and operably connected to inputs of the device. - View Dependent Claims (18)
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Specification