Radio frequency identification tags and methods employing ceramic components, which may be suitable for use in extreme environmental conditions
First Claim
Patent Images
1. A radio frequency apparatus, comprising:
- an RFID chip;
a primary antenna coupled to the RFID chip, thereby forming a functional RFID tag; and
a metal shell encasing the functional RFID tag and coupled to the RFID tag wherein the shell provides a second antenna for the functional RFID tag such that the RFID tag communicates in an ultra high frequency band (UHF).
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Abstract
RFID tags capable of operating in harsh environments include an RFID chip and antenna positioned on a ceramic substrate are disclosed. Alternatively, in other embodiments an RFID chip may be positioned inside a metal shell and then secured to a work piece in the hazardous environment.
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Citations
19 Claims
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1. A radio frequency apparatus, comprising:
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an RFID chip; a primary antenna coupled to the RFID chip, thereby forming a functional RFID tag; and a metal shell encasing the functional RFID tag and coupled to the RFID tag wherein the shell provides a second antenna for the functional RFID tag such that the RFID tag communicates in an ultra high frequency band (UHF). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A radio frequency apparatus structure comprising:
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an RFID chip; a ceramic substrate comprising a printed antenna, the RFID chip coupled to the ceramic substrate to form an RFID tag; and a metal shell surrounding the RFID tag and coupled thereto such that when an ultra high frequency (UHF) RFID interrogation signal is directed at the metal shell, a return signal is generated. - View Dependent Claims (14, 15)
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16. A radio frequency apparatus, comprising:
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an RFID chip; an antenna coupled to the RFID chip, thereby forming an RFID tag operative in an ultra high frequency (UHF) band; and a metal shell coupled to the RFID tag wherein the metal shell provides a second antenna for the RFID tag, wherein the metal shell comprises a dome shape.
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17. A radio frequency apparatus, comprising:
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an RFID chip; an antenna coupled to the RFID chip, thereby forming an RFID tag operative in an ultra high frequency (UHF) band; and a metal shell coupled to the RFID tag wherein the metal shell provides a second antenna for the RFID tag, wherein the metal shell comprises a flattened cylinder shape.
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18. A radio frequency apparatus structure comprising:
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an RFID chip; a ceramic substrate comprising a printed antenna, the RFID chip coupled to the ceramic substrate to form an RFID tag operative in an ultra high frequency (UHF) band; and a metal shell surrounding the RFID tag and coupled thereto such that when an RFID interrogation signal is directed at the metal shell, a return signal is generated, wherein the metal shell comprises an open cylinder shape.
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19. A radio frequency apparatus structure comprising:
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an RFID chip; a ceramic substrate comprising a printed antenna, the RFID chip coupled to the ceramic substrate to form an RFID tag operative in an ultra high frequency (UHF) band; a metal shell surrounding the RFID tag and coupled thereto such that when an RFID interrogation signal is directed at the metal shell, a return signal is generated; and an epoxy filler suspending the RFID chip within the metal shell such that the RFID chip does not touch a side or bottom of the metal shell.
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Specification