WO2020261168A1 - A uhf rfid tag - Google Patents

A uhf rfid tag Download PDF

Info

Publication number
WO2020261168A1
WO2020261168A1 PCT/IB2020/056010 IB2020056010W WO2020261168A1 WO 2020261168 A1 WO2020261168 A1 WO 2020261168A1 IB 2020056010 W IB2020056010 W IB 2020056010W WO 2020261168 A1 WO2020261168 A1 WO 2020261168A1
Authority
WO
WIPO (PCT)
Prior art keywords
loop
inductor
tag
dipole antenna
parasitic
Prior art date
Application number
PCT/IB2020/056010
Other languages
French (fr)
Inventor
Antti Leskela
Lauri Huhtasalo
Original Assignee
Stora Enso Oyj
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 Stora Enso Oyj filed Critical Stora Enso Oyj
Priority to FI20225051A priority Critical patent/FI130267B/en
Publication of WO2020261168A1 publication Critical patent/WO2020261168A1/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/0775—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna
    • G06K19/07752—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna using an interposer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/02—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the selection of materials, e.g. to avoid wear during transport through the machine
    • G06K19/025—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the selection of materials, e.g. to avoid wear during transport through the machine the material being flexible or adapted for folding, e.g. paper or paper-like materials used in luggage labels, identification tags, forms or identification documents carrying RFIDs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/0775—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna
    • G06K19/07754—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna the connection being galvanic
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/0775—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna
    • G06K19/07756—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna the connection being non-galvanic, e.g. capacitive
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/07773—Antenna details
    • G06K19/07786—Antenna details the antenna being of the HF type, such as a dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole

Definitions

  • the present invention relates to an UHF RFID tag on a substrate, which tag comprising dipole antenna, an inductor feed loop, a tag chip that is galvanically connected to the inductor feed loop and a coupling section that connects the inductor feed loop to the dipole antenna.
  • RFID Radio Frequency Identification
  • An RFID tag is a tag that is intended to be attached onto objects to be identified in a radio-frequency identification system.
  • An RFID tag comprising an RFID antenna and an RFID IC (integrated circuit or microchip), which IC is
  • the RFID in this context is a UHF antenna and operates in the frequency range 860-960 MHz.
  • the most widely used antenna for RFID tags operates in the UHF band and is a half-wave dipole antenna.
  • the tag consists of four main components, with reference to Figure 1: Dipole antenna (A), coupling section (B) , inductor loop (C) and tag chip or IC(104) .
  • Dipole antenna (A) Dipole antenna (A), coupling section (B) , inductor loop (C) and tag chip or IC(104) .
  • the inductor loop together with the coupling section match the impedance of the dipole antenna ( ⁇ 70W) to the impedance of tag chip (parallel resistance ⁇ 1.2 kH and capacitance (C) ⁇ 1-1.5 pF) .
  • inductor (feed) loop and capacitance (C) of tag chip set the resonance frequency of the dipole tag antenna where power transfer is maximum.
  • the dipole tag antenna resonance frequency is
  • the inductance (L) of inductor loop is proportional to the length of the inductor loop. If the capacitance increases the inductor loop must be physically shorter to maintain the same resonance frequency. The problem is that
  • An object with the invention is to provide an improved RFID tag that solves the above-mentioned problems.
  • the RFID tag is
  • the tag further comprising a parasitic inductor loop, in parallel with the inductor feed loop, wherein the parasitic inductor loop is not galvanically connected to the tag chip or the inductor feed loop or the dipole antenna.
  • Figure 2 discloses an RFID tag in accordance with the invention, which comprising a parasitic inductor loop 5.
  • Figure 3 discloses current distribution of the dipole tag antenna 1 with and without the parasitic inductor loop 5.
  • Figure 4 discloses radiation and total efficiency of the dipole tag antenna with and without the parasitic
  • Figure 5 discloses antenna Gain of the dipole antenna tag with and without the parasitic inductor loop.
  • Figure 6a, 6b and 6c disclose three different embodiments of the arrangement of the parasitic inductor loop
  • FIGS. 2 and 6a-c disclose the inventive UHF RFID tag on a substrate 6.
  • the RFID tag comprising a dipole antenna 1, an inductor feed loop 2, a tag chip 3 that is
  • the inventive UHF RFID tag further comprising a
  • Figure 3 discloses the current distribution of the dipole tag antenna with parasitic inductor loop (right side) and without parasitic inductor loop (left side) .
  • Part of the RF signal is coupled to parasitic inductor loop which enhance the power transfer between the dipole antenna and the tag chip, which can be seen by comparing the dipole antenna to the right with the dipole antenna to the right .
  • Figure 4 discloses the dipole tag antenna radiation- and total efficiency with parasitic inductor loop and without parasitic inductor loop in decibels [dB] .
  • the radiation efficiency of the dipole antenna tag with parasitic inductor loop is up to 2.5 dB higher that the same tag without the parasitic inductor loop.
  • Graph 10 discloses Radiation Efficiency [dB] without parasitic inductor loop.
  • Graph 13 discloses Total Efficiency [dB] with parasitic inductor loop.
  • Figure 5 discloses the dipole tag antenna maximum Gain [dBi] with and without parasitic inductor loop.
  • the antenna maximum Gain of the dipole antenna tag with parasitic inductor loop is higher than the Gain of the same tag without the parasitic inductor loop.
  • Graph 14 discloses antenna Gain [dBi] without parasitic inductor loop.
  • Graph 15 discloses antenna Gain [dBi] with parasitic inductor loop.
  • the parasitic inductor loop 5 arrangement may be arranged in different ways on the substrate relative to the inductor feed loop.
  • Figures 6a, 6b and 6c disclose three different embodiments within the scope of the invention.
  • Figure 6a discloses a first embodiment of the invention, wherein the parasitic inductor loop 5 is located on the same side of the substrate as the inductor feed loop 2 and the dipole antenna.
  • Figure 6b discloses a second embodiment of the invention, wherein the parasitic inductor loop 5 is located on the opposite side of the substrate as the inductor feed loop 2 and the dipole antenna.
  • Figure 6b discloses a third embodiment of the invention, wherein the parasitic inductor loop 5 is located on the opposite side of the substrate as the inductor feed loop 2 and the dipole antenna and wherein the loops 2, 5 at least partly overlapping each other.
  • inventive antenna design improves the performance of UHF RFID tags by adding a parasitic inductor loop close to feed area. RFID product development is often chase of best performance, so this idea has real-life use cases for example in retail area.
  • the substrate is preferably made of paper or cardboard
  • other non- conductive materials are possible such as plastic.

Abstract

The present invention relates to an UHF RFID tag on a substrate (6), which tag comprising dipole antenna (1), an inductor feed loop (2), a tag chip (3) that is galvanically connected to the inductor feed loop and a coupling section (4) that connects the inductor feed loop to the dipole antenna, wherein the tag further comprising a parasitic inductor loop (5), in parallel with the inductor feed loop, wherein the parasitic inductor loop is not galvanically connected to the tag chip or the inductor feed loop or the dipole antenna.

Description

A UHF RFID TAG
Technical field
The present invention relates to an UHF RFID tag on a substrate, which tag comprising dipole antenna, an inductor feed loop, a tag chip that is galvanically connected to the inductor feed loop and a coupling section that connects the inductor feed loop to the dipole antenna.
In the following the expression RFID (Radio Frequency Identification) tag will be frequently used. An RFID tag is a tag that is intended to be attached onto objects to be identified in a radio-frequency identification system. An RFID tag comprising an RFID antenna and an RFID IC (integrated circuit or microchip), which IC is
electrically connected onto the antenna.
The RFID in this context is a UHF antenna and operates in the frequency range 860-960 MHz.
Background - Problem
The most widely used antenna for RFID tags operates in the UHF band and is a half-wave dipole antenna.
Typically, the tag consists of four main components, with reference to Figure 1: Dipole antenna (A), coupling section (B) , inductor loop (C) and tag chip or IC(104) . The inductor loop together with the coupling section match the impedance of the dipole antenna (~70W) to the impedance of tag chip (parallel resistance ~1.2 kH and capacitance (C) ~1-1.5 pF) . The inductance (L) of
inductor (feed) loop and capacitance (C) of tag chip set the resonance frequency of the dipole tag antenna where power transfer is maximum.
The dipole tag antenna resonance frequency is
proportional to 1/VLC, which means that if the
capacitance (C) increases the inductance (L) must
decrease to maintain the same resonance frequency. The inductance (L) of inductor loop is proportional to the length of the inductor loop. If the capacitance increases the inductor loop must be physically shorter to maintain the same resonance frequency. The problem is that
physically shorter loop is found less efficient in power transfer between dipole antenna and tag chip. It is typical that especially older generation or low-end tag chips have high capacitance and low sensitivity which makes the design of high performing dipole tag antenna difficult .
Object of invention
An object with the invention is to provide an improved RFID tag that solves the above-mentioned problems.
Summary of the invention
In accordance of the invention, the RFID tag is
characterized in that the tag further comprising a parasitic inductor loop, in parallel with the inductor feed loop, wherein the parasitic inductor loop is not galvanically connected to the tag chip or the inductor feed loop or the dipole antenna.
Detailed description of the invention The invention will now be described more with reference to figures 2-6:
Figure 2 discloses an RFID tag in accordance with the invention, which comprising a parasitic inductor loop 5.
Figure 3 discloses current distribution of the dipole tag antenna 1 with and without the parasitic inductor loop 5.
Figure 4 discloses radiation and total efficiency of the dipole tag antenna with and without the parasitic
inductor loop.
Figure 5 discloses antenna Gain of the dipole antenna tag with and without the parasitic inductor loop.
Figure 6a, 6b and 6c disclose three different embodiments of the arrangement of the parasitic inductor loop
relative the inductor feed loop on a substrate.
Figures 2 and 6a-c disclose the inventive UHF RFID tag on a substrate 6. The RFID tag comprising a dipole antenna 1, an inductor feed loop 2, a tag chip 3 that is
galvanically connected to the inductor feed loop 2 and a coupling section 4 that connects the inductor feed loop to the dipole antenna.
The inventive UHF RFID tag further comprising a
continuous parasitic inductor loop 5, in parallel with the inductor feed loop, wherein the parasitic inductor loop is not galvanically connected to the tag chip or the inductor feed loop or the dipole antenna. In tests this antenna solution has been proven to
increase the power transfer between the dipole antenna and tag chip.
Figure 3 discloses the current distribution of the dipole tag antenna with parasitic inductor loop (right side) and without parasitic inductor loop (left side) . Part of the RF signal is coupled to parasitic inductor loop which enhance the power transfer between the dipole antenna and the tag chip, which can be seen by comparing the dipole antenna to the right with the dipole antenna to the right .
Figure 4 discloses the dipole tag antenna radiation- and total efficiency with parasitic inductor loop and without parasitic inductor loop in decibels [dB] . The radiation efficiency of the dipole antenna tag with parasitic inductor loop is up to 2.5 dB higher that the same tag without the parasitic inductor loop.
Graph 10 discloses Radiation Efficiency [dB] without parasitic inductor loop.
Graph 11 discloses Radiation Efficiency [dB] with
parasitic inductor loop.
Graph 12 discloses Total Efficiency [dB] without
parasitic inductor loop.
Graph 13 discloses Total Efficiency [dB] with parasitic inductor loop. Figure 5 discloses the dipole tag antenna maximum Gain [dBi] with and without parasitic inductor loop. The antenna maximum Gain of the dipole antenna tag with parasitic inductor loop is higher than the Gain of the same tag without the parasitic inductor loop.
Graph 14 discloses antenna Gain [dBi] without parasitic inductor loop.
Graph 15 discloses antenna Gain [dBi] with parasitic inductor loop.
The parasitic inductor loop 5 arrangement may be arranged in different ways on the substrate relative to the inductor feed loop. Figures 6a, 6b and 6c disclose three different embodiments within the scope of the invention.
Figure 6a discloses a first embodiment of the invention, wherein the parasitic inductor loop 5 is located on the same side of the substrate as the inductor feed loop 2 and the dipole antenna.
Figure 6b discloses a second embodiment of the invention, wherein the parasitic inductor loop 5 is located on the opposite side of the substrate as the inductor feed loop 2 and the dipole antenna.
Figure 6b discloses a third embodiment of the invention, wherein the parasitic inductor loop 5 is located on the opposite side of the substrate as the inductor feed loop 2 and the dipole antenna and wherein the loops 2, 5 at least partly overlapping each other. A benefit with the invention is that inventive antenna design improves the performance of UHF RFID tags by adding a parasitic inductor loop close to feed area. RFID product development is often chase of best performance, so this idea has real-life use cases for example in retail area.
The substrate is preferably made of paper or cardboard However, a skilled person realizes that other non- conductive materials are possible such as plastic.
In the foregoing, the invention has been described on basis of some specific embodiments. However, a person skilled in the art realizes that other embodiments and variants are possible within the scope of the following claims .

Claims

C L A I M S
1. An UHF RFID tag on a substrate (6), which tag
comprising dipole antenna (1), an inductor feed loop (2), a tag chip (3) that is galvanically connected to the inductor feed loop and a coupling section (4) that connects the inductor feed loop to the dipole antenna, characterized in that the tag further comprising a parasitic inductor loop (5), in parallel with the
inductor feed loop, wherein the parasitic inductor loop is not galvanically connected to the tag chip or the inductor feed loop or the dipole antenna.
2. UHF RFID tag according to claim 1, characterized in that the parasitic inductor loop is located at the same side of the substrate as the inductor feed loop and the dipole antenna.
3. UHF RFID tag according to claim 1, characterized in that the parasitic inductor loop is located at the opposite side of the substrate as the inductor feed loop and the dipole antenna.
4. UHF RFID tag according to claim 3, characterized in that the parasitic inductor loop on a first side of the substrate and the inductor feed loop on an opposite second side of the substrate at least partly overlapping each other.
5. UHF RFID tag according to any of claims 1-4,
characterized in that the substrate is made of paper or cardboard .
PCT/IB2020/056010 2019-06-26 2020-06-25 A uhf rfid tag WO2020261168A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI20225051A FI130267B (en) 2019-06-26 2020-06-25 A uhf rfid tag

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1950795-3 2019-06-26
SE1950795A SE543434C2 (en) 2019-06-26 2019-06-26 A UHF RFID tag

Publications (1)

Publication Number Publication Date
WO2020261168A1 true WO2020261168A1 (en) 2020-12-30

Family

ID=74060183

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2020/056010 WO2020261168A1 (en) 2019-06-26 2020-06-25 A uhf rfid tag

Country Status (3)

Country Link
FI (1) FI130267B (en)
SE (1) SE543434C2 (en)
WO (1) WO2020261168A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070052613A1 (en) * 2005-09-06 2007-03-08 Sebastian Gallschuetz Radio frequency identification transponder antenna
US20090278687A1 (en) * 2007-04-06 2009-11-12 Murata Manufacturing Co., Ltd. Wireless ic device
EP2169767A1 (en) * 2007-07-18 2010-03-31 Fujitsu Limited Wireless tag and manufacturing method of the wireless tag
US20120273577A1 (en) * 2011-04-29 2012-11-01 Samsung Techwin Co., Ltd. Rfid tag having enhanced durability
US20130002403A1 (en) * 2011-06-30 2013-01-03 Qualcomm Incorporated Rfid system with improved coverage and increased reading distance
WO2019097106A1 (en) * 2017-11-16 2019-05-23 Confidex Oy Rfid transponder

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070052613A1 (en) * 2005-09-06 2007-03-08 Sebastian Gallschuetz Radio frequency identification transponder antenna
US20090278687A1 (en) * 2007-04-06 2009-11-12 Murata Manufacturing Co., Ltd. Wireless ic device
EP2169767A1 (en) * 2007-07-18 2010-03-31 Fujitsu Limited Wireless tag and manufacturing method of the wireless tag
US20120273577A1 (en) * 2011-04-29 2012-11-01 Samsung Techwin Co., Ltd. Rfid tag having enhanced durability
US20130002403A1 (en) * 2011-06-30 2013-01-03 Qualcomm Incorporated Rfid system with improved coverage and increased reading distance
WO2019097106A1 (en) * 2017-11-16 2019-05-23 Confidex Oy Rfid transponder

Also Published As

Publication number Publication date
FI130267B (en) 2023-05-24
SE543434C2 (en) 2021-02-16
FI20225051A1 (en) 2022-01-24
SE1950795A1 (en) 2020-12-27

Similar Documents

Publication Publication Date Title
US7843347B2 (en) Near-field and far-field antenna-assembly and devices having same
US7714794B2 (en) RFID antenna
US7154449B2 (en) Antenna
JP4293468B2 (en) Broadband antenna
US8358251B2 (en) Antenna for a backscatter-based RFID transponder
US20070200711A1 (en) Antenna and non-contact tag
KR100839601B1 (en) Antenna Using a Proximity Coupling with a Short-Ended Feed Line and RFID Tag thereof, and Antenna Impedance Matching Method thereof
US6346922B1 (en) Hybrid antenna arrangement for use with electronic identification systems
KR20140075021A (en) Miniaturized radio-frequency identification tag and microstrip patch antenna thereof
Basat et al. Design and development of a miniaturized embedded UHF RFID tag for automotive tire applications
KR100820544B1 (en) RFID tag and antenna thereof
US20140203989A1 (en) High frequency (hf)/ultra high frequency (uhf) radio frequency identification (rfid) dual-band tag antenna
KR100793060B1 (en) Antenna Using Inductively Coupled Feeding Method, RFID Tag thereof and Antenna Impedence Matching Method thereof
US8322625B2 (en) RFID tag for metallic materials
KR101065651B1 (en) Rfid tag antenna
KR100815077B1 (en) Rfid tag having antenna of the high level gain
WO2020261168A1 (en) A uhf rfid tag
Toccafondi et al. Compact load-bars meander line antenna for UHF RFID transponder
Nguyen et al. Novel design of RFID UHF passive tag for wideband applications by direct and contactless chip connection
Pumpoung et al. Investigations of miniaturized meander line tag antenna for UHF RFID system
KR101139317B1 (en) Rfid tag antenna
KR101720688B1 (en) Microstrip antenna
Mhunkaew et al. Dual-band UHF and HF-RFID tag antenna for tracking and energy harvesting applications
KR20120007945A (en) Microstrip antenna with two-step feed slit and manufacture method
US10824823B1 (en) Multiple RFID transponders on a single inlay

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20831837

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20831837

Country of ref document: EP

Kind code of ref document: A1