Methods of operation of an RFID tag assembly for use in a timed event
DCFirst Claim
1. A method of operating a radio frequency identification (RFID) tag assembly in a timed sporting event using an RFID tag reader and timing system for determining a lapse time of a participant carrying the tag assembly, the tag assembly having a wavelength of a predetermined operating frequency of a radio frequency energy comprising:
- in the radio frequency identification (RFID) tag assembly positioned in proximity to an operating surface of a body composed of a radio frequency absorbing material, the tag assembly receiving the radio frequency energy at the predetermined operating frequency as transmitted by a remotely positioned antenna of a base station transceiver and having a substrate having a first planar surface and an opposing second planar surface, a passive RFID chip, a two sided planar antenna and a spacer, the receiving including receiving by the two sided planar antenna having a first side oriented away from the operating surface of the body and having a second side opposing the first side and oriented towards the operating surface of the body, the receiving at the second side being through a spacer having a thickness of between about 0.125 inches and about 0.5 inches that is mounted to the second surface of the substrate and being composed of non-conducting that is also non-absorbing material of a substantial amount of radio frequency energy at the predetermined operating frequency;
placing the RFID tag assembly in a position relative to the operating surface of the body that the second side of the two sided planar antenna is a minimum spaced apart distance;
receiving at the first side of the two sided planar antenna a first portion of the radio frequency energy as direct energy as transmitted from the antenna of the base station transceiver;
receiving at the second side of the two-sided planar antenna a second portion of the radio frequency energy as indirect energy as transmitted from the antenna of the base station transceiver, the receiving of the second portion being responsive to the absorbing of the substantial amount of radio frequency energy by the absorbing material of the second side, said second portion of the radio frequency energy being received at the predetermined operating frequency; and
processing the received first and second portions of the radio frequency energy by the RFID semiconductor chip.
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Abstract
A method of operating a radio frequency identification (RFID) tag assembly in a timed event including in the radio frequency identification (RFID) tag assembly having a spacer having a thickness of between about 0.125 inches and about 0.5 inches, placing the RFID tag assembly in a position relative to the operating surface of the body a minimum spaced apart distance, receiving at the first side of the two sided planar antenna a first portion of the radio frequency energy as direct energy as transmitted from the antenna of the base station transceiver, receiving at the second side of the two-sided planar antenna a second portion of the radio frequency energy as indirect energy as transmitted from the base station transceiver antenna, the second portion of the radio frequency energy being received at the predetermined operating frequency, and processing the received first and second portions of the radio frequency energy.
95 Citations
18 Claims
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1. A method of operating a radio frequency identification (RFID) tag assembly in a timed sporting event using an RFID tag reader and timing system for determining a lapse time of a participant carrying the tag assembly, the tag assembly having a wavelength of a predetermined operating frequency of a radio frequency energy comprising:
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in the radio frequency identification (RFID) tag assembly positioned in proximity to an operating surface of a body composed of a radio frequency absorbing material, the tag assembly receiving the radio frequency energy at the predetermined operating frequency as transmitted by a remotely positioned antenna of a base station transceiver and having a substrate having a first planar surface and an opposing second planar surface, a passive RFID chip, a two sided planar antenna and a spacer, the receiving including receiving by the two sided planar antenna having a first side oriented away from the operating surface of the body and having a second side opposing the first side and oriented towards the operating surface of the body, the receiving at the second side being through a spacer having a thickness of between about 0.125 inches and about 0.5 inches that is mounted to the second surface of the substrate and being composed of non-conducting that is also non-absorbing material of a substantial amount of radio frequency energy at the predetermined operating frequency; placing the RFID tag assembly in a position relative to the operating surface of the body that the second side of the two sided planar antenna is a minimum spaced apart distance; receiving at the first side of the two sided planar antenna a first portion of the radio frequency energy as direct energy as transmitted from the antenna of the base station transceiver; receiving at the second side of the two-sided planar antenna a second portion of the radio frequency energy as indirect energy as transmitted from the antenna of the base station transceiver, the receiving of the second portion being responsive to the absorbing of the substantial amount of radio frequency energy by the absorbing material of the second side, said second portion of the radio frequency energy being received at the predetermined operating frequency; and processing the received first and second portions of the radio frequency energy by the RFID semiconductor chip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of operating a radio frequency identification (RFID) tag assembly in a timed sporting event using an RFID tag reader and timing system for determining a lapse time of a participant carrying the tag assembly, the tag assembly having a radio frequency energy and a wavelength of a predetermined operating frequency in the UHF frequency band:
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providing the radio frequency identification (RFID) tag assembly positioned in proximity to an operating surface of a body, the tag assembly capable of receiving the radio frequency energy at the predetermined operating frequency as transmitted by a remotely positioned antenna of a base station transceiver and having a substrate having a first planar surface and an opposing second planar surface, an RFID chip, a two sided planar antenna and a spacer, the two sided planar antenna having a first side oriented away from the operating surface of the body and a second side opposing the first side and oriented towards the operating surface of the body, the spacer mounted to the second surface of the substrate and being composed of non-conducting material having a thickness of between about 0.125 inches and about 0.5 inches and that is non-absorbing of a substantial amount of radio frequency energy at the predetermined operating frequency; placing the RFID tag assembly in a position relative to the operating surface of the body that the second side of the two sided planar antenna is a minimum spaced apart distance of greater than about 0.5 inches; receiving at the first side of the two sided planar antenna a first portion of the radio frequency energy as direct energy as transmitted from the antenna of the base station transceiver; receiving at the second side of the two-sided planar antenna a second portion of the radio frequency energy as indirect energy as transmitted from the antenna of the base station transceiver responsive to an absorbing of the substantial amount of radio frequency energy by an absorbing material body, said second portion of the radio frequency energy being received at the predetermined operating frequency; processing the received first and second portions of the radio frequency energy by the RFID semiconductor chip; generating a reply radio frequency energy at the RFID semiconductor chip at a predetermined reply operating frequency in response to the receiving and processing of the first and second received radio frequency energy portions; and radiating the generated reply radio frequency energy from at least one of the first side and the second side of the two-sided planar antenna.
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Specification