WO2007130482A3 - Distributed rfid antenna array utilizing circular polarized helical antennas - Google Patents

Distributed rfid antenna array utilizing circular polarized helical antennas Download PDF

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Publication number
WO2007130482A3
WO2007130482A3 PCT/US2007/010675 US2007010675W WO2007130482A3 WO 2007130482 A3 WO2007130482 A3 WO 2007130482A3 US 2007010675 W US2007010675 W US 2007010675W WO 2007130482 A3 WO2007130482 A3 WO 2007130482A3
Authority
WO
WIPO (PCT)
Prior art keywords
antennas
transmitter
circular polarized
rfid
rfid tag
Prior art date
Application number
PCT/US2007/010675
Other languages
French (fr)
Other versions
WO2007130482B1 (en
WO2007130482A2 (en
Inventor
Gary L Overhultz
Gordon E Hardman
Robert W Mead
Original Assignee
Goliath Solutions Llc
Gary L Overhultz
Gordon E Hardman
Robert W Mead
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goliath Solutions Llc, Gary L Overhultz, Gordon E Hardman, Robert W Mead filed Critical Goliath Solutions Llc
Priority to EP07794494A priority Critical patent/EP2021973A2/en
Publication of WO2007130482A2 publication Critical patent/WO2007130482A2/en
Publication of WO2007130482A3 publication Critical patent/WO2007130482A3/en
Publication of WO2007130482B1 publication Critical patent/WO2007130482B1/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
    • G06K7/10336—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the near field type, inductive coil

Abstract

In accordance with the teachings described herein, RFID systems are provided that include a distributed RFID antenna array utilizing one or more circular polarized helical antennas. A plurality of RFID tags may be used, with each RFID tag including a linear polarized antenna for communicating RFID tag signals. One or more receiver antennas may be used for receiving the RFID tag signals from the RFID tags. An RFID tag signal reader may be used to process RFID tag signals received by the receiver antennas. In one example, the receiver antennas may include a circular polarized helical antenna element. One or more transmitter antennas may be used for transmitting an RF signal to the plurality of RFID tags, the transmitter antennas including a circular polarized helical antenna element. A transmitter may be used to generate the RF signal for transmission by the transmitter antennas. In one example, the RFID tag signal reader and the transmitter may be included in a single reader/transmitter unit.
PCT/US2007/010675 2006-05-04 2007-05-03 Distributed rfid antenna array utilizing circular polarized helical antennas WO2007130482A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07794494A EP2021973A2 (en) 2006-05-04 2007-05-03 Distributed rfid antenna array utilizing circular polarized helical antennas

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/417,768 US7614556B2 (en) 2004-11-05 2006-05-04 Distributed RFID antenna array utilizing circular polarized helical antennas
US11/417,768 2006-05-04

Publications (3)

Publication Number Publication Date
WO2007130482A2 WO2007130482A2 (en) 2007-11-15
WO2007130482A3 true WO2007130482A3 (en) 2008-08-21
WO2007130482B1 WO2007130482B1 (en) 2008-10-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/010675 WO2007130482A2 (en) 2006-05-04 2007-05-03 Distributed rfid antenna array utilizing circular polarized helical antennas

Country Status (3)

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US (3) US7614556B2 (en)
EP (1) EP2021973A2 (en)
WO (1) WO2007130482A2 (en)

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US7614556B2 (en) 2009-11-10

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