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Radio-frequency identification near field linear microband antenna

A microstrip antenna and microstrip technology, applied in resonant antennas, components of resonant antennas, antenna supports/mounting devices, etc., can solve problems such as reduced throughput

Active Publication Date: 2007-11-21
TYCO FIRE & SECURITY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, various changes are required to handle different labels on the application line, which also significantly reduces throughput

Method used

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  • Radio-frequency identification near field linear microband antenna
  • Radio-frequency identification near field linear microband antenna
  • Radio-frequency identification near field linear microband antenna

Examples

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Embodiment Construction

[0046] The present disclosure can be more fully understood by the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings, however, it should not be construed that the present invention is limited to the specific embodiments, but only for the purpose of illustration.

[0047] Numerous specific details are given here to provide a thorough understanding of the many possible embodiments of the present disclosure. However, it will be apparent to those skilled in the art that these embodiments may be practiced without these specific details, and in other instances well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the embodiments. It should be appreciated that the specific structural and functional details disclosed herein are representative and do not necessarily limit the scope of these embodiments.

[0048]Some embodiments may be described using t...

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Abstract

A security device detaches a combination electronic article surveillance (EAS) and radio frequency identification (RFID) tag (EAS / RFID tag), and includes a detacher (magnet) to selectively disengage a clutch release disposed in a first portion of the combination EAS / RFID tag, a near field antenna configured to electronically read information stored in a second portion of the combination EAS / RFID tag. The antenna encircles the detacher and reads information from the second portion of the combination EAS / RFID tag at a position relative to the detacher when the second portion of the tag is disposed at any angle relative to the detacher and only when the detacher is positioned to disengage the clutch release. As long as the portion of the EAS / RFID tag containing the clutch end mechanism is located over the detaching magnet, the RFID label is in a valid detection zone regardless of its orientation relative to the antenna.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Patent Application No. 60 / 624,402, filed Nov. 2, 2004, by Shafer et al., and entitled "NEAR FIELD PROBE FOR READING RFID TAGS AND LABELSAT CLOSE RANGE," and The benefit of priority of U.S. Provisional Patent Application No. 60 / 659,289, entitled "LINEARMONOPOLE MICROSTRIP RFID NEAR FIELD ANTENNA," filed March 7, the entire contents of which are hereby incorporated by reference. Background technique [0003] Existing means of reading RFID (Radio Frequency Identification) tags employ conventional antennas that provide RFID tags with a large read range. This approach provides most of the antenna energy used in the far field. The far-field region is defined as the distance of d>>λ / 2π, where λ is the wavelength. For a UHF (Ultra High Frequency) frequency of 915 MHz, this value is about 5 cm. Thus, the far-field region at 915 MHz is substantially over 5 cm, and similarly the nea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E05B73/00H01Q1/38H01Q1/22H01Q9/06
Inventor 理查德·L.·科佩兰德加里·M.·沙弗尔
Owner TYCO FIRE & SECURITY GMBH