WO2006072990A1 - タグ装置、アンテナ及び携帯型カード - Google Patents
タグ装置、アンテナ及び携帯型カード Download PDFInfo
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- WO2006072990A1 WO2006072990A1 PCT/JP2005/000091 JP2005000091W WO2006072990A1 WO 2006072990 A1 WO2006072990 A1 WO 2006072990A1 JP 2005000091 W JP2005000091 W JP 2005000091W WO 2006072990 A1 WO2006072990 A1 WO 2006072990A1
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- Prior art keywords
- main loop
- dielectric substrate
- antenna
- unit
- capacitive load
- Prior art date
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- 239000000758 substrate Substances 0.000 claims abstract description 83
- 238000004891 communication Methods 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 20
- 239000011888 foil Substances 0.000 claims abstract description 16
- 230000005855 radiation Effects 0.000 claims abstract description 12
- 230000005674 electromagnetic induction Effects 0.000 claims description 16
- 230000005684 electric field Effects 0.000 claims description 12
- 230000004907 flux Effects 0.000 claims description 8
- 230000001154 acute effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 28
- 238000000034 method Methods 0.000 description 7
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- 230000000694 effects Effects 0.000 description 5
- 230000002452 interceptive effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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; 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
- G06K19/07771—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
Definitions
- the present invention relates to a tag device, an antenna, and a portable card, and more particularly to a tag device that performs wireless communication, an antenna that performs radio wave radiation 'capture, and a portable card that performs wireless communication.
- RFID Radio Frequency-Identification
- RFID is a type of wireless communication system that attaches an IC tag to an object and automatically identifies the object wirelessly without contact.
- RFID can be connected to a network by attaching an IC tag to everything, so it is rapidly being developed as an effective technology for building a next-generation ubiquitous network society.
- the RFID system is composed of a reader Z writer (ReaderZWriter) and an IC tag, and the reader / writer also writes information to the IC tag or stores it in the IC tag via each antenna by wireless communication. Read the information.
- the frequency bands previously used for RFID were 13.56MHz band and 2.45GHz band. Recently, UHF (Ultra-High-Frequency: 300MHz—300 MHz) ) IC tags that use bands are attracting attention.
- the UHF band IC tag uses the UHF band, especially 952MHz-954MHz, for communication, and requires a longer communication distance with the reader Z writer than the existing 13.56MHz band and 2.45GHz band IC tags. It is possible to expand the communicable area.
- the radio wave or magnetic field force generated by the reader Z writer also inducts the power to the ic tag for communication. It is carried out.
- RFID is roughly divided into a radio wave system and an electromagnetic induction system as a system for inducting a power source.
- 45GHz band and UHF band IC tags are radio systems that convert the radio waves emitted by the reader / writer into power. 13.
- the magnetic force generated near the antenna of the reader Z writer It is an electromagnetic induction system that obtains power
- FIG. 12 is a diagram showing the concept of the radio wave system.
- the RFID system 100 that performs communication in the 45 GHz band or UHF band is composed of a reader Z writer 110 and an IC tag 120.
- the IC tag 120 includes an antenna 121, a rectifier circuit 122, and a control circuit 123.
- the rectifier circuit 122 rectifies the radio wave that is an AC signal into a DC signal.
- the direct current signal is used as a power source to control circuit 123 that performs modulation / demodulation control and logic control.
- FIG. 13 is a diagram showing the concept of the electromagnetic induction method. 13.
- the reader Z writer antenna and the IC tag antenna are composed of loop antennas 210 and 220, respectively (the loop antenna has a circular or square conductor shape) Is an antenna with a looped structure).
- the loop antenna in the 13.56MHz band IC tag, power can be obtained based on the current generated by the magnetic field generated by electromagnetic induction using the loop antenna (13.56MHz band). Because the loop antenna is used for electromagnetic induction, the loop antenna itself is used as an antenna that radiates normal radio waves rather than an antenna used only for electromagnetic induction).
- the UHF band can obtain a communication distance of about three times or more compared to the 2.45 GHz band.
- the electromagnetic induction method described in FIG. 13 requires that the loop antennas of the reader Z writer and the IC tag are close to each other. If the writer force is also separated, the magnetic field becomes weak at once, and it becomes impossible to secure power. [0015] As specific communication distances, the maximum force of 70-80cm for the 13.56MHz band and about 2m at the maximum for the 2.45GHz band is confirmed as an experimental value of approximately 7m for the UHF band. Te !, Ru (theoretical value is about 10m).
- Antennas used in 45GHz and UHF band IC tags are basically dipole antennas (eg, folded dipole antennas) with a 1Z2 length ( ⁇ / 2) of radio wave wavelength ⁇ . It is used regularly.
- ⁇ (wavelength) C (velocity of light) Zf (frequency).
- the antenna length of the 45 GHz band IC tag is 3 X 10 8 Z2.
- 45 X 10 9 0.16 m, which is about 6 cm, half of that.
- the 13.56 MHz band IC tag has a drawback that the communication distance cannot be extended.
- the communication range is 2 m, so the practical range is expanded to some extent. 2.
- 2.45 GHz radio waves are blocked and absorbed when liquids such as water and alcohol are nearby. (2. 45 GHz is the same as the frequency of a microwave oven).
- the UHF band has a longer communication distance and does not have the disadvantages of the 2.45GHz band, so the reader Z writer power is easier to read multiple IC tags at once than the existing frequency band.
- the UHF band also has the advantage of being able to read IC tags even in places where it cannot be seen by the reader Z writer, since the radio wave wraps around.
- Patent Document 1 As a conventional IC tag, an IC tag coated with a thin flexible protective laminate is provided (for example, Patent Document 1).
- Patent Document 1 Japanese Patent Application Laid-Open No. 08-88586 (paragraph numbers [0018] one [0021], FIG. 3) Disclosure of the Invention
- RFID can be used by embedding an IC tag in a card that can be carried by a person, and using this force to manage the entry and exit of users on railways and aviation, and to shop at department stores, etc. It is conceivable that services using IC tag cards will be widely performed.
- FIG. 14 is a diagram showing a folded dipole antenna.
- a dipole antenna (Dipole Antenna) dp is an antenna that emits radio waves by applying a high frequency from a feeding part (wave source) in the center of one conductor, and is the most basic form of a linear antenna (antenna Basically long fly / 2).
- the folded dipole antenna fdp is an antenna having a structure in which a conductor of one wavelength is folded based on the dipole antenna dp.
- the card is often carried in a person's breast pocket, etc., or the card is in contact with the reader / writer by holding it in your hand. If the UHF band card with embedded IC tag with a folded dipole antenna fdp is in the vicinity of the human body, the radiation of the radio wave will be blocked and absorbed by the human body, and the reception characteristics of the radio wave will be degraded. There was a problem.
- FIG. 15 is a diagram showing a problem of the conventional UHF band card.
- Dipole antenna dp is shown near the human body (note that the basic principle of the folded dipole antenna fdp and the dipole antenna dp is the same. Will be described with reference to FIG.
- a current il as shown in the figure flows through the dipole antenna dp and a radio wave V is radiated.
- a current i2 that flows in the opposite direction to the current il flowing through the dipole antenna dp is generated on the surface of the human body.
- the currents il and i2 cancel each other, so that the current il flows into the dipole antenna dp and the radio wave V does not fly sufficiently.
- ground plane which is a planar antenna, is also widely used for IC tag cards! /
- FIG. 16 is a diagram showing a ground plane antenna.
- the ground plane antenna 300 has a structure in which a GND plate (ground plane) 302 is provided on one surface (back surface) of a dielectric substrate 301 and a radiating element 303 is provided on the other surface (front surface) of the dielectric substrate 301.
- a GND plate ground plane
- the core wire of the inner conductor of the coaxial cable is connected to the radiating element 303, and the outer conductor of the coaxial cable is connected to the GND plate 302. Power the signal).
- the ground plane antenna 300 has front and back surfaces as described above. However, if the front side where the radiating element 303 is installed faces the human body, a phenomenon similar to that described above with reference to FIG. 15 occurs.
- the ground plane antenna 300 also has a problem in that the radiation and reception characteristics of the radio wave V are deteriorated because the human body blocks and absorbs the radio wave V radiation.
- the IC tag included in the 13.56MHz band card is an electromagnetic induction type as described above with reference to FIG.
- the loop antenna There was a problem that the generated magnetic field was blocked by other IC tags that were stacked, no current was generated on the loop, and the 13.56 MHz band IC tag could not operate, making communication impossible.
- the conductor part inside the UHF band card can be obtained by holding the 13.56MHz band card over the reader Z writer. This causes a phenomenon that the radio waves that should be emitted and received by the 13.56MHz band card are obstructed.
- the present invention has been made in view of such a point, and even if it is in the vicinity of a human body, it does not deteriorate radio wave reception and reception characteristics, and does not impede communication with other IC tags.
- An object of the present invention is to provide a tag device that performs simple wireless communication.
- Another object of the present invention is to provide an antenna that performs high-quality wireless communication without deterioration of radio wave radiation 'reception characteristics even in the vicinity of the human body and without interfering with communication of other IC tags. Is to provide.
- another object of the present invention is to provide a portable type capable of performing high-quality wireless communication without deterioration of radio wave reception characteristics even in the vicinity of a human body and without inhibiting communication with other IC tags. Is to provide a card.
- the loop-shaped metal foil mounted on the surface of the dielectric substrate 30
- An antenna unit 10 composed of a main loop unit 11 that performs transmission and reception, and a capacitive load unit 12 that is a metal foil connected to the main loop unit 11 and has a load of a capacitance component, and a main loop unit 11
- a control unit 20 that controls information via radio waves.
- the tag device 1 is provided.
- the main loop portion 11 is a loop-shaped metal foil mounted on the surface of the dielectric substrate 30, and transmits and receives radio waves.
- the capacitive load unit 12 is a metal foil connected to the main loop unit 11 and has a load of a capacitance component.
- the control unit 20 is connected to the main loop unit 11 and controls information via radio waves.
- the tag device of the present invention is a loop-shaped metal foil mounted on the surface of a dielectric substrate, a main loop portion that transmits and receives radio waves, and a metal foil that is connected to the main loop portion.
- the antenna unit is composed of a capacitive load unit having a component load.
- the antenna of the present invention is a loop-shaped metal mounted on the surface of a dielectric substrate, and is a main loop part that transmits and receives radio waves, a metal that is connected to the main loop part, and has a capacitance component. It comprised from the capacitive load part which has load. As a result, even in the vicinity of the human body, it is possible to perform high-quality wireless communication without deterioration of radio wave emission and reception characteristics and without interfering with communication of other IC tags.
- the portable card of the present invention is a loop-shaped metal foil mounted on the surface of a dielectric substrate, a main loop part for transmitting and receiving radio waves, and a metal foil connected to the main loop part, It has an antenna part composed of a capacitive load part having a load of a capacitance component, and is composed of a card-like member that can be carried by a person. As a result, even in the vicinity of the human body, it is possible to perform high-quality wireless communication without deterioration of radio wave emission and reception characteristics and without interfering with communication of other IC tags.
- FIG. 1 is a principle diagram of a tag device.
- FIG. 2 is a diagram showing an overview of an antenna unit.
- FIG. 3 is a diagram showing a current flowing through an antenna unit.
- FIG. 4 is a diagram for explaining the operation of the main loop unit when the tag device is located near the human body.
- FIG. 5 is a conceptual diagram showing the electric field strength of radiated radio waves in the UHF band.
- FIG. 6 is an experimental comparison of the electric field strength of radiated electromagnetic waves with and without a capacitive load.
- FIG. 7 is a diagram showing how the length of the capacitive load section is changed.
- FIG. 8 is a diagram showing the impedance of the main loop portion.
- FIG. 9 is a diagram showing a tag device when it is overlapped with an ID card having a magnetic tape.
- Fig. 10 is a diagram showing a tag device when stacked with a 56 MHz band card.
- FIG. 11 is a diagram showing a modification of the antenna unit.
- FIG. 12 is a diagram showing a concept of a radio wave system.
- FIG. 13 is a diagram showing a concept of an electromagnetic induction method.
- FIG. 14 is a diagram showing a folded dipole antenna.
- FIG. 15 is a diagram showing problems of a conventional UHF band card.
- FIG. 16 shows a ground plane antenna
- FIG. 1 shows the principle of the tag device.
- the tag device 1 includes an antenna unit 10, a control unit 20, and a dielectric substrate 30, and is a device that performs wireless communication.
- the tag device 1 is used as an RFID UHF band IC tag.
- the antenna unit 10 includes a main loop unit 11 and a capacitive load unit 12.
- the main loop part 11 is a loop-shaped metal foil mounted on the surface of the dielectric substrate 30 and transmits and receives radio waves (the main loop part 11 is a main part of the antenna function).
- the capacitive load unit 12 is a metal foil connected to the main loop unit 11 and has a load of a capacitance component.
- the antenna unit 10 has a shape of an elongated loop having an area smaller than the area of the dielectric substrate 30 and sandwiches the dielectric substrate 30 as shown in the figure.
- the dielectric substrate 30 is mounted in a horizontal direction so as to cover the front surface (both front and back surfaces) and side surfaces of the dielectric substrate 30 and to the surface of the dielectric substrate 30.
- the capacitive load portion 12 is provided at both end portions of the main loop portion 11 (which may be referred to as end portions of the dielectric substrate 30) covering the front side surface of the dielectric substrate 30, although not shown, the capacitive load portion 12 is provided in the same manner at both ends of the main loop portion 11 on the back surface of the dielectric substrate 30 (the capacitive load portion 12 is provided on the dielectric substrate 30). (Not on the side.)
- the control unit 20 is an electronic circuit component that is connected to the main loop unit 11 and controls information via radio waves, and corresponds to an IC chip.
- the control unit 20 is actually mounted on the main loop unit 11 (in the figure, mounted at the center of the main loop unit 11).
- the information control means that the information received via the main loop unit 11 (from the reader Z writer) is subjected to demodulation processing or data writing processing to the internal memory, or the main loop unit. For example, data read processing and modulation processing of the internal memory are performed on the information to be transmitted via 11 (to the reader Z writer).
- the control unit 20 serves as a wave source (power feeding unit), and a rectifier circuit is included therein.
- FIG. 2 is a diagram showing an overview of the antenna unit 10.
- the main loop portion 11 has an elongated loop shape, and capacitive load portions 12 are provided at both ends of the main loop portion 11. Further, the capacitive load section 12 is vertically connected to both ends of the loop-shaped main loop section 11, so that the antenna section 10 becomes an antenna having an H-shaped structure.
- the tag device 1 has a structure in which the dielectric substrate 30 shown in FIG. 1 is sandwiched between the antenna portions 10 having such shapes.
- FIG. 3 is a diagram showing a current flowing through the antenna unit 10. It is a diagram simulating the current flowing through the antenna unit 10, and the state of current flow is indicated by arrows.
- the power of the current flowing through the antenna section 10 during reception Most current flows on the main loop section 1 1 (because of the loop shape, it flows in a loop (round) on the front and back surfaces)
- the current flowing through the capacitive load section 12 is very small.
- the tag device 1 has the antenna unit 10 described above with reference to FIGS. 2 and 3, thereby solving the conventional problems with respect to the UHF band IC tag and obtaining the following effects (1), (1) and (4). Is.
- the tag device 1 has a wider band than the conventional UHF band IC tag. When regional communication is enabled, it has characteristics. In the following, the functions and operations of the tag device 1 related to these features will be described in detail.
- the tag device 1 is used as a portable card by housing the antenna unit 10 and the control unit 20 in a card-shaped member that can be carried by a person.
- the tag device 1 can be used as an ID card, a cash card, a regular train It can be used widely such as ticket cards.
- the card-shaped member may be a material such as plastic, and the antenna unit 10 may be housed inside the member or may have a structure attached to the surface of the member. Good. However, since the card dimensions in Japan are determined to be 54 mm (vertical) X 86 mm (horizontal) X O. 76 mm (thickness), the tag device 1 is within the size of this card.
- FIG. 4 is a diagram for explaining the operation of the main loop unit 11 when the tag device 1 is located near the human body.
- the main loop unit 11 is a loop having a line L1 and an L4 force, and a current flows counterclockwise in the main loop unit 11 when receiving radio waves.
- the current flowing through the line L1 is referred to as current II, the current flowing through the line L2 into current 12, the current flowing through the line L3 into current 13, and the current flowing through the line L4 into current 14 for convenience.
- the mobile card including the tag device 1 is placed in the chest pocket or is held by the reader Z writer for the hand, the radiation / reception characteristics of the radio wave are not hindered by the human body, and the vicinity of the human body Even if the tag device 1 is used in this case, it is possible to obtain good radio wave radiation and reception characteristics.
- FIG. 5 is a conceptual diagram showing the electric field strength of radiated radio waves in the UHF band.
- the vertical axis is the electric field strength of the radiated radio wave, and the horizontal axis is the frequency (MHz).
- Graph G1 shows a narrow-band state centered on 953 MHz as the UHF band
- Daraf G2 shows a wide-band state centered on 953 MHz as the UHF band!
- a broadband load can be achieved by connecting the capacitive load unit 12 to the main loop unit 11.
- FIG. 6 is an experimental comparison of the electric field strength of radiated electromagnetic waves with and without the capacitive load section 12.
- the value at a distant point is calculated by simulation using the moment method.
- the dimensions of the tag device 1 used for the calculation are 4.5 cm X 7.5 cm X 0.5 mm, and the dielectric
- the electrical characteristics of the body substrate 30 are a relative dielectric constant of 3.9 and a dielectric loss of 0.008.
- the internal impedance of the control unit 20 serving as a wave source was 20 ⁇ -18 (3 ⁇ , and the voltage source of IV was used.
- the graph G3 showing the electric field strength of the main loop portion 11 when the capacitive load portion 12 is connected is connected to the main load portion 12 when the capacitive load portion 12 is connected. It can be seen that the band is wider than the graph G4, which shows the electric field strength of the loop part 11.
- the control unit 20 is connected to the main loop unit 11, and the electric power output from the control unit 20 is emitted into the air as radio waves via the main loop unit 11.
- a force that travels a wave while maintaining the relationship of voltage ⁇ current impedance (characteristic impedance) ⁇ ⁇ is connected to a load resistance R that has a value equal to the impedance ⁇ . All enters the load resistance R and is consumed as heat, and
- the impedance of the main loop unit 11 and the internal impedance of the control unit 20 are made equal (if matching), only the traveling wave output from the control unit 20 is transmitted, and the traveling wave has it. All the electric energy is supplied to the main loop part 11 which is an antenna and radiated.
- perfect impedance matching is an ideal state that is theoretically possible, and in an actual design, how close to this ideal state is important.
- FIG. 7 is a diagram showing how the length of the capacitive load unit 12 is changed.
- the length L of the portion shown in the figure is varied in the range of 0-20mm.
- FIG. 8 is a diagram showing the impedance of the main loop section 11.
- the vertical axis represents the impedance ( ⁇ ), and the horizontal axis represents the length L (mm) of the capacitive load section 12, and the impedance of the main loop section 11 when the length L shown in FIG. 7 is varied from 0 to 20 mm. It shows a change.
- the impedance is changed by changing the length L of the capacitive load section 12.
- the internal impedance of the control unit 20 is Assuming that 120 ⁇ + j320 Q is obtained from the measurement result of the network analyzer, the impedance will be matched if the length L of the capacitive load section 12 is 15 mm.
- the impedance of the main loop unit 11 can be made variable only by changing the area of the capacitive load unit 12, so that the control unit 20 (IC Impedance matching can be performed efficiently if the internal impedance of the chip) is measured with a network analyzer or the like, and the area of the capacitive load section 12 is changed so as to substantially match this measurement value ( Since the impedance has two parameters, the resistance R and the reactance X, it is difficult to actually match both of them. However, the capacitive load unit 12 has a priority so that the reactance X side is matched with priority. It was experimentally recognized that adjusting the length improves the impedance matching accuracy).
- FIG. 9 is a diagram showing the tag device 1 when it is overlapped with an ID card having a magnetic tape.
- the main loop unit 11 has a magnetic tape (a substance that interferes with the emission and reception of radio waves as well as the magnetic tape) so that the interaction with the magnetic tape is minimized.
- FIG. 10 is a diagram showing the tag device 1 when it is stacked with a 13.56 MHz band card.
- a loop antenna inside the 13.56MHz band card, generating magnetic flux. If the main loop 11 of the tag device 1 is in the center of the card and it overlaps with the 13.56MHz band card, it will block the flow of magnetic flux and will interfere with the reading of the 13.56MHz band card. (Conversely, the magnetic flux causes radio interference in the main loop section 11).
- the main loop portion 11 is positioned away from the center portion of the loop antenna of the 13.56MHz band card so as not to disturb the flow of magnetic flux generated by the 13.56MHz band card. Thus, it is provided on the dielectric substrate 30 (in the figure, the main loop portion 11 located at the center of the card is moved to the end of the card).
- FIG. 11 is a view showing a modification of the antenna unit 10.
- the antenna unit 10 described above is an antenna having an H-shaped structure in which the capacitive load unit 12 is vertically connected to both ends of the loop-shaped main loop unit 11, but the antenna unit 10a of the modified example Then, the ends of the capacitive load portion 12 are connected with an acute angle in the vertical direction of both ends of the loop-shaped main loop portion 11 to have an N-shaped structure.
- the main loop unit 11 of the antenna unit 10a has an elongated loop shape having an area smaller than the area of the dielectric substrate.
- the dielectric substrate is mounted in a diagonal direction so as to cover the surface and side surfaces of the dielectric substrate and sandwich the dielectric substrate.
- the capacitive load portion 12 is provided at both ends of the main loop portion 11 covering the front surface of the dielectric substrate and at both ends of the main loop portion 11 covering the back surface of the dielectric substrate.
- the dielectric substrate is sandwiched between two N-shaped antennas.
- the main loop portion 11 loops the front and back through the side of the dielectric substrate, and the capacitive load portion 12 Is not provided on the side! / ⁇ ).
- the tag device 1 When the tag device 1 is placed in a card with a predetermined size (54 mm (vertical) X 86 mm (horizontal) X O. 76 mm (thickness) in Japan), the length of the main loop 11 ( If it is desired to extend the antenna length), the same effect as the H-shape can be obtained as an N-shaped antenna as in the modified example.
- the human body overlaps with other ID cards and the like. It is possible to obtain good transmission / reception characteristics even in a state where the device is mounted. In addition, it does not adversely affect the IC tag card in the 13.56MHz band. It is possible to adjust the alignment with the IC chip (control unit 20) by changing. This makes it possible to provide effective RFID services when promoting IT and automation in all future industries.
- the tag device 1 is applied to an RFID portable card, and the shape of the antenna unit 10 is H-shaped or N-shaped, but the antenna unit 10 is H-shaped or N-shaped.
- the main loop section 11 and the capacitive load section 12 may be connected so that the shape is not limited to the N-shape, but is limited to the RFID field, and other types that use high frequency. Even in the communication field, it is very wide and applicable.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602005024441T DE602005024441D1 (de) | 2005-01-07 | 2005-01-07 | Tag-einrichtung, antenne und tragbare karte |
EP05703359A EP1835564B1 (en) | 2005-01-07 | 2005-01-07 | Tag device, antenna and portable card |
CN2005800461581A CN101099266B (zh) | 2005-01-07 | 2005-01-07 | 标签装置、天线及便携型卡 |
TW094100482A TWI262447B (en) | 2005-01-07 | 2005-01-07 | Tag device, antenna, and portable-type card |
PCT/JP2005/000091 WO2006072990A1 (ja) | 2005-01-07 | 2005-01-07 | タグ装置、アンテナ及び携帯型カード |
JP2006550567A JP4717830B2 (ja) | 2005-01-07 | 2005-01-07 | タグ装置 |
US11/822,528 US7880680B2 (en) | 2005-01-07 | 2007-07-06 | Tag device, antenna, and portable card |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/000091 WO2006072990A1 (ja) | 2005-01-07 | 2005-01-07 | タグ装置、アンテナ及び携帯型カード |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/822,528 Continuation US7880680B2 (en) | 2005-01-07 | 2007-07-06 | Tag device, antenna, and portable card |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006072990A1 true WO2006072990A1 (ja) | 2006-07-13 |
Family
ID=36647478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/000091 WO2006072990A1 (ja) | 2005-01-07 | 2005-01-07 | タグ装置、アンテナ及び携帯型カード |
Country Status (7)
Country | Link |
---|---|
US (1) | US7880680B2 (ja) |
EP (1) | EP1835564B1 (ja) |
JP (1) | JP4717830B2 (ja) |
CN (1) | CN101099266B (ja) |
DE (1) | DE602005024441D1 (ja) |
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WO (1) | WO2006072990A1 (ja) |
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JP2011250406A (ja) * | 2010-05-28 | 2011-12-08 | China Steel Corp | 容量性負荷を有するrfidタグ |
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- 2005-01-07 JP JP2006550567A patent/JP4717830B2/ja not_active Expired - Fee Related
- 2005-01-07 DE DE602005024441T patent/DE602005024441D1/de active Active
- 2005-01-07 EP EP05703359A patent/EP1835564B1/en not_active Expired - Fee Related
- 2005-01-07 TW TW094100482A patent/TWI262447B/zh not_active IP Right Cessation
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009022404A1 (ja) | 2007-08-13 | 2009-02-19 | Fujitsu Limited | 無線タグ及び無線タグの製造方法 |
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JP2011250406A (ja) * | 2010-05-28 | 2011-12-08 | China Steel Corp | 容量性負荷を有するrfidタグ |
Also Published As
Publication number | Publication date |
---|---|
US20070262871A1 (en) | 2007-11-15 |
EP1835564A1 (en) | 2007-09-19 |
CN101099266A (zh) | 2008-01-02 |
TWI262447B (en) | 2006-09-21 |
JPWO2006072990A1 (ja) | 2008-06-12 |
TW200625180A (en) | 2006-07-16 |
EP1835564B1 (en) | 2010-10-27 |
DE602005024441D1 (de) | 2010-12-09 |
EP1835564A4 (en) | 2008-11-19 |
CN101099266B (zh) | 2011-02-02 |
JP4717830B2 (ja) | 2011-07-06 |
US7880680B2 (en) | 2011-02-01 |
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