WO2007125164A1 - Rfid transponder and its blank and method of construction for manufacturing the rfid transponder - Google Patents

Rfid transponder and its blank and method of construction for manufacturing the rfid transponder Download PDF

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Publication number
WO2007125164A1
WO2007125164A1 PCT/FI2007/050218 FI2007050218W WO2007125164A1 WO 2007125164 A1 WO2007125164 A1 WO 2007125164A1 FI 2007050218 W FI2007050218 W FI 2007050218W WO 2007125164 A1 WO2007125164 A1 WO 2007125164A1
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WO
WIPO (PCT)
Prior art keywords
foil
case
plane
rfid transponder
radiator
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/FI2007/050218
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French (fr)
Inventor
Olavi MERILÄINEN
Heikki SEPPÄ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WISTEQ Oy
Original Assignee
WISTEQ Oy
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 WISTEQ Oy filed Critical WISTEQ Oy
Priority to US12/226,229 priority Critical patent/US20090051617A1/en
Priority to DK07730705.6T priority patent/DK2016538T3/en
Priority to PL07730705T priority patent/PL2016538T3/en
Priority to CN2007800154173A priority patent/CN101432764B/en
Priority to EP07730705.6A priority patent/EP2016538B1/en
Priority to ES07730705.6T priority patent/ES2546618T3/en
Priority to FI20070330U priority patent/FI7794U1/en
Publication of WO2007125164A1 publication Critical patent/WO2007125164A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06K19/04—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the shape
    • G06K19/041—Constructional details
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06K19/07771—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 the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06K19/0779—Antenna details the antenna being foldable or folded
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
    • 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
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • 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

Definitions

  • the present invention relates to an RFID transponder, which includes a case, a radiator, and a ground element, as opposed antenna elements, a ground plane intended to be set against the base at a distance from the radiator, and an electrical chip component, and in which the ground plane is on the first plane and the radiator is on the second plane, at a distance from the first plane, and in which the chip component is connected to the radiator and the ground element, and further in which the said radiator, ground element, and chip component are installed on a special foil.
  • the invention also relates to a blank for the transponder.
  • the term RFID transponder refers mainly to a UHF-range passive transponder equipped with an RFID chip, but other applications too may be considered. Such RFID transponders operate using so-called backscatter technology. In this connection, reference is also made to so-called micro- strip antennae.
  • a passive RFID transponder is a small device comprising an antenna, microcircuit, and memory, which uses backscattering to transmit the contents of its memory when it receives a transmission command from a reading device and the reading device illuminates it with a radio signal.
  • a passive transponder has no battery, but instead draws its operating power from the radio signal transmitted to it by the reader. The transmission of power and information between the transponder and the reader can take place with the aid of a magnetic field, an electric field, or a radiating radio signal.
  • Active transponders have a battery and somewhat simpler operation, as power transmission is not needed.
  • Patent application publication US2004/0005754 Al discloses one ⁇ smart label' construction and a method for manufacturing it.
  • a challenge in RFID transponders operating in the UHF range is to make them operate reliably even on conductive surfaces. This is because the electrical properties of the antenna also depend on the properties of the installation surface.
  • the effect of the base can be reduced sufficiently by equipping the transponder with a separate conductive shielding plane, above which the antenna is raised slightly.
  • Another possibility is to use so-called PIFA (Planar Inverted F-antenna) antennae, in which the ground element of the antenna is formed of a sufficiently large surface area below the radiator. The totality is then less sensitive to the properties of the base and the tran- sponder can generally be made to function on a conductive surface .
  • the present invention is intended to create a mechanical solution for reliably supporting the structures of an RFID transponder.
  • the characteristic features of the transponder accord- ing to the invention are stated in the accompanying Claims 1.
  • a blank for the transponder according to the invention is presented in Claim 9.
  • the invention can be applied to both RFID transponders equipped with a separate ground plane, and to transponders equipped with a newer PAFFA-type antenna structure.
  • the folded foil is supported on a special spacer piece, which keeps the planes of the foil at a distance to each other.
  • the foil is supported directly on the side walls of the case. The solution applies generally to an' antenna structure for a two-terminal antenna connection.
  • a PAFFA antenna structure comprises a ground plane on the first surface, at least one transmission line on the second surface, connected to the ground plane through a fold in the edge of the antenna structure, in which case the fold acts as the primary source of the magnetic field, an insulator layer arranged between the first and second surface, and an electronic component, in which there is a two-terminal antenna, connected to the antenna structure.
  • the elec- tronic component is attached to the second surfa ⁇ e of the antenna structure and connected from one of the antenna terminals to the transmission line and from the other terminal to either a second transmission line or to the fold.
  • FIGS. Ia - Ic show the construction and assembly of one RFID transponder according to the invention
  • Figures 2a and 2b show a second assembly of the RFID transponder
  • FIGs 3a - 3c show a blank for an RFID transponder, manufactured using the injection moulding tech- nique, and its assembly.
  • the main components of the RFID transponder are a case 10, a foil 20, and an intermediate frame 18.
  • the foil 20 is 5 manufactured in some known manner and in it there are, as electrical elements, an electronic chip (RFID), radiator 12, ground element 14, which in this case also forms the ground plane 14a.
  • RFID electronic chip
  • the ground element 14 is connected by a transmission line 19 to the radiator at a distance from the feed point of
  • the frame 18 is for installing the foil 20.
  • the frame 18 there is a wall 18.1 covering the opening.
  • the front edge of the frame includes
  • the foil 20 there is a first part 20b, a fold 20a, and a second part 20c.
  • first part 20b remains on the first plane A and the second part 20c remains on the second plane B.
  • the joints can be, for example, welded using ultrasound, in order to create an airtight structure.
  • the foil 20, together with its insulation, folded to its final form, forms an RFID transponder with advantageous electrical properties.
  • the vertical-angle length from the free end of the radiator 12 to the middle of the transmission line 19 is 66 mm in the example according to the figure, in which the gap between the planes is 4 mm. It should be noted that the chip 16 is attached to the ground element 14 over a consider-
  • the chip 16 is attached to the edge of the radia- tor at a point that corresponds to the impedance of the chip. In this relation, the location of the chip does not greatly affect the resonance frequency. According to Figure Ib, the chip 16 remains on the same side as the radiator 12.
  • the length of the electrical parts of the foil, in the direction of the fold, is preferably 4/V ⁇ - (cm) , in which ⁇ is the dielectric value of the substance between the first and second planes .
  • the assembly of Figure 2a shows a second structure of an RFID transponder, which is based on a known dipole structure and a separate ground plane against the base.
  • the radiator 12 and the ground element 14 are on the plane B with the chip 16 (part 20c of the foil 20) .
  • the electrically sepa- rate ground plane 14a is on plane A (part 20b of the foil 20) .
  • the fold 20a remains between these parts.
  • a foil of this kind can be easily installed in the same way as above on top of the frame 18 and a rugged transponder structure created, Figure 2b.
  • the blank 10' for an RFID transponder can be manufactured by injection moulding, in such a way that the foil 20 is placed ready in the mould.
  • the blank there is a base plane and sides 10.3, as well as spacer pieces 10.2.
  • One end of the plane can be turned, together with the foil, on top of the sides 10.3 and, for example, the joints welded together using ultrasound, when a transponder 10, installed in a case, will be created, which functionally corresponds to the transponder described above, depending on the electrical structures of the foil.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Details Of Aerials (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

The i nven t i on r e l a t e s t o a n RFI D transponder, which includes a case (1 0), a radiator (12), and a ground element (14), as opposed antenna element s, a ground plane (14a intended to be set against the base at a distance from the radiator, and an electrical chip component (16). The radiator (12), ground element (14),and chip component (16) are installed on a special foil (20), which also comprises the said ground plane (14 a) on the first plane (A) and a fold (20 a) between the first and second plane, the foil (20) being thus divided into a first part (20b) on the first plane (A), the fold (20a), and a second part (20c) on the second plane (B). The case (10) has attached to it intermediate structure (18) for supporting thefirst part (20b) and the second part (20c) of the foil (20) on the said first plane (A) and second plane (B).

Description

RFID TRANSPONDER AND ITS BLANK AND METHOD OF CONSTRUCTION FOR MANUFACTURING THE RFID TRANSPONDER
The present invention relates to an RFID transponder, which includes a case, a radiator, and a ground element, as opposed antenna elements, a ground plane intended to be set against the base at a distance from the radiator, and an electrical chip component, and in which the ground plane is on the first plane and the radiator is on the second plane, at a distance from the first plane, and in which the chip component is connected to the radiator and the ground element, and further in which the said radiator, ground element, and chip component are installed on a special foil. The invention also relates to a blank for the transponder. Here, the term RFID transponder refers mainly to a UHF-range passive transponder equipped with an RFID chip, but other applications too may be considered. Such RFID transponders operate using so-called backscatter technology. In this connection, reference is also made to so-called micro- strip antennae.
A passive RFID transponder is a small device comprising an antenna, microcircuit, and memory, which uses backscattering to transmit the contents of its memory when it receives a transmission command from a reading device and the reading device illuminates it with a radio signal. A passive transponder has no battery, but instead draws its operating power from the radio signal transmitted to it by the reader. The transmission of power and information between the transponder and the reader can take place with the aid of a magnetic field, an electric field, or a radiating radio signal. Active transponders have a battery and somewhat simpler operation, as power transmission is not needed.
Patent application publication US2004/0005754 Al discloses one λsmart label' construction and a method for manufacturing it.
Though the example in the publication concerns an inductively connecting RFID transponder, the same type of construction can also be applied to transponders operating at a radio frequency, which latter have a substantially greater range than the former. In the publication, polycarbonate, polyolefin, polyester, polyethylene terephthalate (PET) , polyvinylchloride (PVC) , and acrylonitrile/butadiene-styrene copolymer are presented as materials of the base web.
A challenge in RFID transponders operating in the UHF range is to make them operate reliably even on conductive surfaces. This is because the electrical properties of the antenna also depend on the properties of the installation surface. The effect of the base can be reduced sufficiently by equipping the transponder with a separate conductive shielding plane, above which the antenna is raised slightly. Another possibility is to use so-called PIFA (Planar Inverted F-antenna) antennae, in which the ground element of the antenna is formed of a sufficiently large surface area below the radiator. The totality is then less sensitive to the properties of the base and the tran- sponder can generally be made to function on a conductive surface .
The manufacture of an PIFA antenna is difficult and expensive, particularly relating to the vias, due to the complexity of the construction. VTT (the Technical Research Centre of Finland) has published a basic solution (WO 2006/120287A1) for a so- called PAFFA antenna, which is intended to solve the problems relating to PIFA antennae. According to the abstract of the publication, a special folding technique in the antenna base is used to replace the vias of a PIFA antenna.
The present invention is intended to create a mechanical solution for reliably supporting the structures of an RFID transponder. The characteristic features of the transponder accord- ing to the invention are stated in the accompanying Claims 1. A blank for the transponder according to the invention is presented in Claim 9.
The invention can be applied to both RFID transponders equipped with a separate ground plane, and to transponders equipped with a newer PAFFA-type antenna structure. In one embodiment, the folded foil is supported on a special spacer piece, which keeps the planes of the foil at a distance to each other. In a second embodiment of the invention, the foil is supported directly on the side walls of the case. The solution applies generally to an' antenna structure for a two-terminal antenna connection. A PAFFA antenna structure comprises a ground plane on the first surface, at least one transmission line on the second surface, connected to the ground plane through a fold in the edge of the antenna structure, in which case the fold acts as the primary source of the magnetic field, an insulator layer arranged between the first and second surface, and an electronic component, in which there is a two-terminal antenna, connected to the antenna structure. According to the solution, the elec- tronic component is attached to the second surfaςe of the antenna structure and connected from one of the antenna terminals to the transmission line and from the other terminal to either a second transmission line or to the fold.
Other embodiments and benefits of the invention are described hereinafter, in connection with examples of applications, which are shown in the accompanying drawings, in which
Figures Ia - Ic show the construction and assembly of one RFID transponder according to the invention,
Figures 2a and 2b show a second assembly of the RFID transponder, and
Figures 3a - 3c show a blank for an RFID transponder, manufactured using the injection moulding tech- nique, and its assembly. In the embodiment of Figure Ia - Ic, the main components of the RFID transponder are a case 10, a foil 20, and an intermediate frame 18. There is an opening 10.1 in the side wall of the case 10 for the installation to be described later. The foil 20 is 5 manufactured in some known manner and in it there are, as electrical elements, an electronic chip (RFID), radiator 12, ground element 14, which in this case also forms the ground plane 14a. The ground element 14 is connected by a transmission line 19 to the radiator at a distance from the feed point of
10 the chip. The construction of the antenna element does not actually come within the scope of the present invention. Here, the frame 18 is for installing the foil 20. In the frame 18, there is a wall 18.1 covering the opening. To facilitate the installation of the foil, the front edge of the frame includes
15 pins 24, with corresponding holes 26 in the foil, with the aid of which the foil can be precisely aligned as desired.
In the foil 20, there is a first part 20b, a fold 20a, and a second part 20c. When the foil 20 is folded on top of the frame 20 18 according to Figure Ib, the first part 20b remains on the first plane A and the second part 20c remains on the second plane B. Thus, the frame 18 with the foil 20 can be pushed in, Figure Ic. The joints can be, for example, welded using ultrasound, in order to create an airtight structure.
25
In this case, the foil 20, together with its insulation, folded to its final form, forms an RFID transponder with advantageous electrical properties. The length of the radiator is approximately λ/4 (ε = 1, i.e. the air gap) . At the example of a
30 frequency of 867 MHz, the vertical-angle length from the free end of the radiator 12 to the middle of the transmission line 19 is 66 mm in the example according to the figure, in which the gap between the planes is 4 mm. It should be noted that the chip 16 is attached to the ground element 14 over a consider-
35 ably shorted conductor length than λ/4. In this electrical application, the chip 16 is attached to the edge of the radia- tor at a point that corresponds to the impedance of the chip. In this relation, the location of the chip does not greatly affect the resonance frequency. According to Figure Ib, the chip 16 remains on the same side as the radiator 12. The length of the electrical parts of the foil, in the direction of the fold, is preferably 4/Vε -
Figure imgf000006_0001
(cm) , in which ε is the dielectric value of the substance between the first and second planes .
The assembly of Figure 2a shows a second structure of an RFID transponder, which is based on a known dipole structure and a separate ground plane against the base. In this case, the radiator 12 and the ground element 14 are on the plane B with the chip 16 (part 20c of the foil 20) . The electrically sepa- rate ground plane 14a is on plane A (part 20b of the foil 20) . The fold 20a remains between these parts. A foil of this kind can be easily installed in the same way as above on top of the frame 18 and a rugged transponder structure created, Figure 2b.
According to Figure 3a, the blank 10' for an RFID transponder can be manufactured by injection moulding, in such a way that the foil 20 is placed ready in the mould. In the blank there is a base plane and sides 10.3, as well as spacer pieces 10.2. One end of the plane can be turned, together with the foil, on top of the sides 10.3 and, for example, the joints welded together using ultrasound, when a transponder 10, installed in a case, will be created, which functionally corresponds to the transponder described above, depending on the electrical structures of the foil.
In the above, air is used between the planes. It is also possible to use a circuit-board material, or preferably plastic, which acts at the same time as the body of the transponder, as an intermediate substrate.

Claims

1. RFID transponder, which includes a case (10), a radiator (12), and a ground element (14), as opposed antenna elements, a ground plane (14a) intended to be set against the base at a distance from the radiator, and an electrical chip component (16) , and in which the ground plane (14a) is on the first plane (A), and the radiator (12) is on the second plane (B), at a distance from the first plane, and in which the chip component is connected to the radiator (12) and the ground element (14), and, further, in which the said radiator (12), ground element (14), and chip component (16) are installed on a special foil (20), characterized in that the said foil (20) also comprises the said ground plane (14a) on the first plane (A) and a fold (20a) between the first and second plane, the foil (20) being thus divided into a first part (20b) on the first plane (A) , the fold (20a), and a second part (20c) on the second plane (B), and intermediate structure (18) relating to the case (10) for supporting the first part (20b) and the second part (20c) of the foil (20) on the said first plane (A) and second plane (B) .
2. RFID transponder according to Claim 1, characterized in that the ground plane (14a) is connected to form the ground element (14) by a transmission line (19) running through the fold (20a) .
3. RFID transponder according to Claim 1 or 2, characterized in that the foil is attached to the inner surface of the case, the said intermediate structure thus being formed by the actual case .
4. RFID transponder according to Claim 1 or 2, characterized in that the foil (20) is supported on the internal intermediate structure (18) carried by the case, which determines mechanically the distance of the first and second levels from each other, the said intermediate structure thus being formed mainly of the intermediate structure (18).
5. RFID transponder according to any of Claims 1 - 4, charac- terized in that the intermediate structure (18) is a frame creating mainly air insulation between the first and second planes .
6. RFID transponder according to any of Claims 1 - 4, charac- terized in that the intermediate structure (18) is board, which has a chosen dielectric value ε .
7. RFID transponder according to any of Claims 4 - 6, characterized in that the intermediate structure (18) is arranged to be pushed in through an opening in the wall of the case (10) and the intermediate structure (18) includes a wall covering the opening.
8. RFID transponder according to any of Claims 1 - 7, charac- terized in that the length of the electrical components in the direction of the fold is 4/Vε - 15/Vε, in which ε is the dielectric value of the substance between the first and second planes .
9. Blank for an RFID transponder, which includes a case-component blank (10'), a foil (20) comprising a ground plane, a ground element, a radiator, and a two-terminal chip component connected to the radiator and the ground element, and in which the said ground plane, ground element, radiator, and chip component are installed on the foil, characterized in that the case-component blank (101) comprises a planar area and side elements (10.3) at its edges and the foil (20) is installed in a planar form on this area, which case-component blank (10') is, together with the foil (20) , arranged to be folded in two, to form a closed case (10), in which case (10) the parts of the foil (20) located on each side of the fold take up a position at a distance from each other.
10. Blank according to Claim 9 for an RFID transponder, charac- 5 terized in that the blank (101) of the case component is an injection-moulded piece.
11. Method of construction for manufacturing an RFID transponder according to Claim 1, in which the transponder is
10 assembled from prefabricated components, which include a case (10) and a foil (20) containing the electrical components, and in which the foil is support on the case (10) in a U shape, one branch containing a ground plane intended against the base, characterized in that an intermediate piece (18) is formed,
15 around which the foil (20) is folded into the said U shape, after which the intermediate piece (18) with the foil (20) is pushed into the case (10) and the intermediate piece is attached to the case (10) .
20 12. Method of construction for manufacturing an RFID transponder according to Claim 1, in which the transponder is assembled from prefabricated components, which include a case (10) and a foil (20) containing the electrical components, and in which the foil is supported on the case (10) in a U shape,
25 one branch containing a ground plane intended against the base, characterized in that the case blank (101) is manufactured by injection-moulding as an essentially planar object and the foil is located as an inlay component in the mould before moulding and the finished blank (10') with the foil (20) is folded in
30 two and finally the joints are closed, in order to create a closed case (10) .
PCT/FI2007/050218 2006-04-28 2007-04-24 Rfid transponder and its blank and method of construction for manufacturing the rfid transponder Ceased WO2007125164A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US12/226,229 US20090051617A1 (en) 2006-04-28 2007-04-24 Rfid Transponder and its Blank and Method of Construction for Manufacturing the Rfid Transponder
DK07730705.6T DK2016538T3 (en) 2006-04-28 2007-04-24 RFID Transponder and Subject Sheets and Design Procedure for Manufacturing the RFID Transponder
PL07730705T PL2016538T3 (en) 2006-04-28 2007-04-24 RFID transponder and its semi-finished product and manufacturing method for the production of an RFID transponder
CN2007800154173A CN101432764B (en) 2006-04-28 2007-04-24 RFID transponder and its blank and method of construction for manufacturing the rfid transponder
EP07730705.6A EP2016538B1 (en) 2006-04-28 2007-04-24 Rfid transponder and its blank and method of construction for manufacturing the rfid transponder
ES07730705.6T ES2546618T3 (en) 2006-04-28 2007-04-24 RFID transponder and its preliminary form and construction method for the manufacture of the RFID transponder
FI20070330U FI7794U1 (en) 2006-04-28 2007-08-27 Transponder and substance for the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20065279A FI120018B (en) 2006-04-28 2006-04-28 Remote identifier and subject and procedure for making a remote identifier
FI20065279 2006-04-28

Publications (1)

Publication Number Publication Date
WO2007125164A1 true WO2007125164A1 (en) 2007-11-08

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PCT/FI2007/050218 Ceased WO2007125164A1 (en) 2006-04-28 2007-04-24 Rfid transponder and its blank and method of construction for manufacturing the rfid transponder

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US (1) US20090051617A1 (en)
EP (1) EP2016538B1 (en)
CN (1) CN101432764B (en)
DK (1) DK2016538T3 (en)
ES (1) ES2546618T3 (en)
FI (1) FI120018B (en)
PL (1) PL2016538T3 (en)
WO (1) WO2007125164A1 (en)

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EP4128046A4 (en) * 2020-03-24 2023-12-20 Confidex Oy Rfid tag
US20240378409A1 (en) * 2021-10-28 2024-11-14 Linxens Holding Document with antenna of dual shielding/communication function

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Also Published As

Publication number Publication date
FI20065279L (en) 2007-10-29
CN101432764A (en) 2009-05-13
ES2546618T3 (en) 2015-09-25
DK2016538T3 (en) 2015-09-14
FI120018B (en) 2009-05-29
CN101432764B (en) 2012-05-09
FI20065279A0 (en) 2006-04-28
EP2016538B1 (en) 2015-07-01
PL2016538T3 (en) 2015-12-31
EP2016538A1 (en) 2009-01-21
US20090051617A1 (en) 2009-02-26
EP2016538A4 (en) 2013-05-22

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