Extended range RFID tag assemblies and methods of operation
First Claim
Patent Images
1. A radio frequency identification (RFID) tag assembly comprising:
- an RFID semiconductor chip having an antenna interface mounted on a mounting surface of a mounting substrate, the RFID semiconductor having a predetermined operating frequency;
a conductor electrically coupled to the antenna interface of the RFID semiconductor chip; and
an antenna electrically coupled to the conductor, the antenna including a first radiating element lying in a first plane and a second radiating element lying in a second plane, the second plane being at an angle relative to the first plane wherein the first radiating element has a length less than about ¼
of a wavelength of the predetermined operating frequency and the second radiating element has a length less than about ¼
of the wavelength of the predetermined operating frequency.
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Accused Products
Abstract
Radio frequency identification (RFID) tag assemblies and methods having an RFID semiconductor chip, a conductor and an antenna, the RFID semiconductor chip has an antenna interface mounted on a mounting surface of a mounting substrate and a predetermined operating frequency, the conductor is electrically coupled to the antenna interface of the RFID semiconductor chip, and the antenna is electrically coupled to the conductor and includes a first radiating element lying in a first plane and a second radiating element lying in a second plane that is at an angle relative to the first plane.
90 Citations
25 Claims
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1. A radio frequency identification (RFID) tag assembly comprising:
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an RFID semiconductor chip having an antenna interface mounted on a mounting surface of a mounting substrate, the RFID semiconductor having a predetermined operating frequency; a conductor electrically coupled to the antenna interface of the RFID semiconductor chip; and an antenna electrically coupled to the conductor, the antenna including a first radiating element lying in a first plane and a second radiating element lying in a second plane, the second plane being at an angle relative to the first plane wherein the first radiating element has a length less than about ¼
of a wavelength of the predetermined operating frequency and the second radiating element has a length less than about ¼
of the wavelength of the predetermined operating frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A radio frequency identification (RFID) tag assembly comprising:
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an RFID semiconductor chip having an antenna interface mounted on a mounting surface of a mounting substrate and having a predetermined operating frequency; a conductor electrically coupled to the antenna interface of the RFID semiconductor chip and mounted on the mounting surface; and an antenna electrically coupled to the conductor, the antenna including a first radiating element lying in a first plane and a second radiating element lying in a second plane, the second plane being at an angle relative to the first plane, wherein the first radiating element has length less than about ¼
of a wavelength of the predetermined operating frequency and the second radiating element has a length less than about ¼
of the wavelength of the predetermined operating frequency. - View Dependent Claims (16, 17, 18, 19)
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20. A method of operating a radio frequency identification (RFID) tag assembly comprising:
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receiving at a first radiating element in a first plane of an antenna coupled to an RFID semiconductor chip a first portion of radio frequency energy transmitted from an antenna associated with a base station transceiver positioned remote from the RFID tag assembly, said radio frequency energy being at a predetermined operating frequency and wherein the receiving is at the first radiating element that has a length less than about ¼
of a wavelength of the predetermined operating frequency;receiving at a second radiating element in a second plane of the antenna coupled to the RFID semiconductor chip a second portion of the radio frequency energy transmitted from the base station transceiver antenna, said second plane being at an angle to the first plane, said second radiating element being electrically coupled to said first radiating element, and said second portion of the radio frequency energy being received at the predetermined operating frequency and the second radiating element having a length less than about ¼
of the wavelength of 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 processing and in response to the first and second received radio frequency energy portions; and radiating the reply radio frequency energy by the first and second radiating elements of the antenna coupled to the RFID semiconductor chip. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification