Radio frequency transponder

A radio frequency, radio frequency technology, applied in the passive transponder structure, the field of encoding information, can solve the problem of cost is a problem

Inactive Publication Date: 2011-05-11
MONASH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cost is an issue in many other applications including product identification, au

Method used

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  • Radio frequency transponder
  • Radio frequency transponder
  • Radio frequency transponder

Examples

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Embodiment Construction

[0064] figure 1 A radio frequency identification system 100 embodying the present invention is shown. In particular, system 100 includes a coreless radio frequency identification tag 102 incorporating a multi-resonator structure 104 in accordance with an embodiment of the present invention. The multiresonator 104 is disposed between the receive antenna 106 and the transmit antenna 108 and is coupled to the receive antenna 106 and the transmit antenna 108 . According to a preferred arrangement, the receive antenna 106, the multiresonator 104 and the transmit antenna 108 are all fabricated on a single substrate. For example, elements 106, 104, 108 may be formed on a dielectric substrate using conventional PCB fabrication techniques, or may be printed onto the substrate using suitable conductive inks. Additional steps in the fabrication process are described in more detail below, which relate to a particular embodiment of the multiresonator 104 below.

[0065] Radio frequency ...

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Abstract

Information is encoded in a resonator/antenna structure, which may be interrogated in order to retrieve the information via radio frequency (RF) excitation. The resonator/antenna structure comprises a multiresonator including a plurality of substructures, and exhibits a plurality of resonances in the RF domain. Characteristic frequencies of the resonances depend upon the substructures, which may be modified in accordance with information to be encoded within the resonator/antenna structure. The resonator/antenna may be formed as a conductive structure disposed upon a dielectric substrate, and may be useful for encoding information within chipless RFID tags, security documents, negotiable instruments, and so forth. A variety of suitable multiresonator structures are disclosed, including multi-stop-band filters comprising cascaded spiral resonators, a 'wheel and spoke' structure, an interleaved resonant circuit, and a fractal resonator structure.

Description

technical field [0001] The present invention relates to radio frequency transponders, and more particularly to passive transponder structures for encoding identification information and / or other data and methods of encoding information in such structures. Applications of the invention include, but are not limited to, the fabrication and operation of passive devices, such as coreless radio frequency identification (RFID) tags utilizing the structures and encoding methods of the invention. Background technique [0002] There are many applications in which it is advantageous to mark items with identification information that can be detected and / or read by electronic means. These applications include logistics (e.g. tracking items in warehouse and / or in transit), sales (e.g. automatic identification of goods and billing / tolling) and security (e.g. security of documents and / or items including identity cards and negotiable instruments such as banknotes) identification and / or auth...

Claims

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Application Information

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IPC IPC(8): H01P7/10G01R27/04H01P7/08G01R23/07G06K19/06H01Q1/38
CPCH01P1/20381G06K19/0723H01P7/082H01Q1/2225
Inventor 斯特万·普雷拉多维奇内毛伊·钱德拉·卡尔马卡尔伊萨克·巴尔班苏希姆·穆库尔·罗伊格哈德·弗雷德里克·斯维格斯
Owner MONASH UNIV
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