JP2017076340A - Linear antenna ic tag, system thereof, and manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a linear antenna IC tag including a linear antenna that can be sewn in clothing or the like.SOLUTION: A linear antenna IC tag includes: an IC chip 1 for a passive tag including a first terminal and a second terminal; an antenna Aconnected to the first terminal Pand having the length of a quarter wavelength to a half wavelength of a radio wave transmitted and received by the passive tag; and a metal wire connected between the first terminal Pand the second terminal Pand forming a resonance circuit with the IC chip 1 in a pseudo manner.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a linear antenna IC tag belonging to the technical field of UHFIC tags, a system thereof, and a manufacturing method thereof.

  The UHF IC tag has conventionally been constituted by a resonant circuit part composed of an IC and an inductance for resonating with the capacitance of the IC, and an antenna part for causing radiation. There are cases where the resonance circuit portion is configured by a part of the antenna portion and cases where the antenna portion and the resonance circuit portion are configured to perform electromagnetic coupling, both of which are often used.

  In particular, a thread-like conductive antenna is configured to be sewn into a name tag, and a circular resonant circuit part is secured with plastic at the center of the name tag, and the current of the resonant coil of this resonant circuit part is combined with the sewn conductive antenna. What was made to be used is used for clothing. The resonant circuit is molded by placing an IC and a planar coil in a plastic disk of about 1 mm thickness, and winding the filamentous antenna affixed to a cloth name tag about 2 turns to resonate inside the resonant circuit board. It is comprised so that it may couple | bond with a coil (refer FIG.17 (c)). Such an IC tag can obtain the same performance as a general IC tag. However, there is no problem because the antenna part of such an IC tag is sewn together, but since the resonance circuit part is separately bonded in a solid disk shape, not only is extra work required, but the solid module is bonded to the fabric. When it is easily peeled off, when it is put on a washing machine or the like, only the resonance circuit part is peeled off, and a signal is not generated and an ID cannot be obtained.

  On the other hand, an IC tag having an inlay antenna that is made by laminating aluminum and plastic and etching to form an antenna is suitable for mass production, but it is easy to peel off and difficult to cope with bending, etc. It was a wide range of IC tags.

FIGS. 17A and 17B show laminated IC tags 110 and 111 that are widely used in the past. As shown in FIGS. 17E and 17A, the IC tags 110 and 111 generally have a short-circuit loop (coil) La and an antenna for resonating with the capacitance Ci and resistance r _i (about 20 to 50Ω) of the IC chip 1. Radiation resistances r _a (about 50 to 70Ω) of 110a and 111a are connected in parallel.

In the circuit shown in FIGS. 17E and 17B, the resistance r _i and the capacitance Ci of the IC chip 1 are simply added to the radiation resistance r _a (including other losses) and the reactance X (the open circuit inductance La and the antenna 110a). , 111a is described separately) and the inductance La is configured to resonate. In the circuit shown in FIGS. 17 (e) and (b), the antennas 110a and 111b themselves are inductive and capacitive depending on the line length and the like. Therefore, the comprehensive reactance X including them, the inductance La due to the closed circuit, and the IC chip 1 This indicates that the capacitance Ci of the capacitor is in resonance.

Next, FIG. 17C shows an example of an IC tag 112 having a system in which a thin wire antenna (parasitic element) 112a is coupled to a resonance module 112b of an approximately two-turn coil 112c to which the IC chip 1 is attached. . FIG. 17F shows a circuit diagram of the IC tag 112 of FIG. The resonance module 112b of about 10 mmφ and the antenna 112a are configured separately, and the coil current I ₂ flowing through the coil (about 2 turns) 112c of the resonance module 112b and the antenna 112a (generally the antinode portion of the antenna current I ₁ ) the electromagnetic coupling M, transmission and reception of signals are performed between the signal current I ₂ and the antenna 112a of the coil of the resonance module 112b. Therefore, the reactance of the antenna side primary circuit is X ₂ + (Lc ± M), and the inductance of the IC side secondary side is (Li ± M).

Figure 17 (d) is a drawing showing an example of a metal corresponding IC tag 113, as well as the inductance L and the capacitance Ci of the IC chip 1 are configured on antenna tuned radiation resistance r _a and IC resistor r _i is matched, and ωL and 1 / ωCi can be tuned, and both have substantially common impedance, and both tuning and matching are performed. The antenna is hardly affected by the human body, but it is difficult to make it linear or fibrous due to its characteristics.

  As described above, generally, an IC tag that is usually used is formed by etching or vapor deposition, and thus has a film-like structure. Such a structure is suitable for mass production, but it is difficult to form a thin line or thread, cannot be directly attached to a fiber or the like, and an IC tag manufacturing machine is also expensive.

  For example, Patent Document 1 discloses a technique related to a cloth with an RFID tag suitable for communication with an RFID tag and a cloth management system with an RFID tag. In this technique, since a linear antenna is integrally formed in a medical gauze and a tag IC chip is embedded, the medical gauze itself can communicate with a reader.

JP 2011-15395 A

  As described above, the laminated IC tag and the RFID tag of Patent Document 1 are difficult to sew into clothing or the like, and the IC tag having a circular resonant circuit section has a problem that the resonant circuit section is peeled off. It was. Furthermore, since the inlay-type metal-compatible IC tag has a film-like structure, it cannot be sewn into clothing or the like. In addition, it is difficult for the RFID tag described in Patent Document 1 to be sewn into a cloth or the like.

  The present invention has been made to solve the above-described problem, and an object thereof is to provide a linear antenna IC tag having a linear antenna that can be sewn into clothing or the like.

  The present invention has the following configuration in order to solve the above problems.

(1) an IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire connected to the first terminal and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
A metal wire connected between the first terminal and the second terminal, and having a predetermined length that artificially configures a resonance circuit with the IC chip;
A linear antenna IC tag comprising:

(2) an IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire connected to the first terminal and having a length obtained by adding a predetermined length to a length of ¼ to ½ wavelength of a radio wave transmitted and received by the passive tag;
A metal wire connected between the first terminal and the second terminal, and having a predetermined length that artificially configures a resonance circuit with the IC chip;
A linear antenna IC tag comprising:

(3) an IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire having a length of ¼ to ½ wavelength of the radio wave transmitted and received by the passive tag, which is connected to each of the first and second terminals;
Further, a metal wire connected to the first terminal for simulating a resonance circuit with the IC chip, which is longer than ¼ wavelength in electrical length of the radio wave,
A linear antenna IC tag comprising:

(4) an IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire connected to the first terminal and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
A metal wire connected to the second terminal, having an electrical length of the radio wave longer than a quarter wavelength, and forming a pseudo resonant circuit with the IC chip;
A linear antenna IC tag comprising:

(5) an IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire connected to the first terminal and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
A first metal wire connected to the first terminal and having an electrical length longer than ¼;
A second metal wire connected to the second terminal and connected from the open end of the first metal wire to the quarter wavelength position;
A linear antenna IC tag comprising:

(6) an IC chip for a passive tag having a first terminal and a second terminal;
Two antenna lines connected to the first terminal and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
A metal wire connected to the second terminal and configured in a pseudo manner as a resonance circuit with the IC chip having an electrical length longer than the quarter wavelength;
A linear antenna IC tag comprising:

(7) an IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire connected to the first terminal and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
Two metal wires having an electrical length connected to each of the first terminal and the second terminal and longer than the quarter wavelength;
A linear antenna IC tag comprising:

(8) an IC chip for a passive tag having a first terminal and a second terminal;
Two antenna lines connected to the first terminal and the second terminal, respectively, and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
One end connected to the first terminal, the other end connected to a predetermined position of the antenna line connected to the second terminal, and a metal wire that artificially configures a resonance circuit with the IC chip;
A linear antenna IC tag comprising:

  (9) The linear antenna IC tag according to any one of (1) to (8), wherein the metal wire is a conductive yarn.

(10) It further has a substrate on which the IC chip is placed and connected,
The substrate has another hole that is electrically connected to a hole into which the first terminal and the second terminal are inserted, and the antenna line and the metal line are connected to the other hole. The linear antenna IC tag according to any one of (1) to (9).

  (11) The connection portion between the first terminal and the second terminal of the IC chip, the antenna wire, and the metal wire is molded. The linear antenna IC tag according to any one of the above.

(12) a sensor that acquires predetermined data;
The linear antenna IC tag according to any one of (1) to (11), which reads data acquired by the sensor;
A reader for reading data from the linear antenna IC tag;
The system characterized by having.

(13) The linear antenna IC tag according to any one of (1) to (11),
A terminal or reader for receiving information from the linear antenna IC tag;
And a network for connecting the information received by the terminal or reader to the Internet.

  (14) A plurality of linear antenna IC tags according to any one of (1) to (11), wherein the IC chip, the antenna wire, and the metal wire are manufactured along with a yarn. A method for manufacturing a linear antenna IC tag.

  According to the present invention, it is possible to provide a linear antenna IC tag having a linear antenna that can be sewn into clothing or the like.

1st figure which shows the linear antenna IC tag using the FPC board of this invention 2nd figure which shows the linear antenna IC tag of this invention 3rd figure which shows the linear antenna IC tag of this invention The figure for demonstrating the voltage and electric current of the linear antenna IC tag of this invention The figure for demonstrating the pseudo-resonance state of the linear antenna IC tag of this invention 4th figure which shows the linear antenna IC tag of this invention The figure for demonstrating the resonance circuit of the linear antenna IC tag of this invention 1st figure which shows the manufacture state of the linear antenna IC tag of this invention The 2nd figure which shows the manufacture state of the linear antenna IC tag of this invention The figure for demonstrating the system using the linear antenna IC tag and sensor of this invention The figure which shows the state which installed the linear antenna IC tag of this invention in the lab coat etc. The figure for demonstrating sewing the linear antenna IC tag of this invention to cloth. The figure which shows the state which installed the linear antenna IC tag of this invention in clothing The figure which shows the state which installed the linear antenna IC tag of this invention in the plastic case etc. The figure which shows the state in which the linear antenna IC tag of this invention is used in the hospital The figure which shows the distribution | circulation state of the clothing which has the linear antenna IC tag of this invention The figure for demonstrating the conventional UHFIC tag

[Outline of the present invention]
The linear antenna IC tag of the present invention can be manufactured at low cost by configuring all parts including the antenna and the IC chip into one linear shape. Can be sewn directly. In addition, it can be manufactured by a few simple processes instead of a plurality of processes as in the prior art, and by attaching an IC chip to one or two linear antennas directly or through a thin and thin substrate, it has a thinner structure. An inexpensive and easy-to-handle IC tag can be provided. As a result, the ultra-thin linear antenna IC tag can be sewn directly into a cloth or name tag with a sewing machine, etc. without the module of the resonance part dropping off or attaching the module separately. Steps such as combining them are unnecessary.

  In the linear antenna IC tag of the present invention, a metal conductive polymer or a conductive polymer, for example, a conductive material conductor such as polythiophene, polyaniline, polyacetylene, or polyvinylol (driestloni), or an IC chip directly or indirectly on a conductive yarn. The inductance that resonates with the capacitance of the IC chip can be constituted by a part of a thin wire or a thread-like antenna. Also, narrow the IC chip mounting part so that it passes through the needle hole of a sewing machine, etc., and sew it directly on clothing, or sew it on metal sheet cloth or clothing brand tags, arms, sleeves, hems, pockets, etc. Can be included. The needle hole of the sewing machine has a width of about 0.5 mm and a length of about 1 mm, but a special needle can be created and used. Furthermore, when attaching to a rubber tire, a plastic case, a glass bottle, etc., it is a thin line, so it can be attached and affixed in a natural state without being noticeable and intrusive.

  In another linear antenna IC tag of the present invention, it is configured only in a linear shape without using a substrate, and is configured with two antenna wires without having a closed circuit in the middle, or from the terminal of the IC chip. Each antenna line can be taken out, the antenna can be made inductive so that the resonant circuit can be constructed in a pseudo manner, and the IC chip capacitance and the pseudo resonant state can be obtained.

  The linear or thread-like (whisker) linear antenna IC tag of the present invention is a single metal wire such as a thin metal wire having a wire diameter of 0.05 to 0.1 mmφ, such as an aluminum wire having a diameter of 0.02 mmφ or 0.03 mmφ. Several ICs are twisted, and an IC chip is directly bonded to a thread-like conductor wire that has electrical conductivity and strength. Alternatively, an IC chip is bonded to a thin board such as an FPC board, and a linear (whisker curve antenna) line for forming an inductance is connected to or bonded to this, and the antenna part is as thin as possible and the part to which the IC chip is attached is as small as possible. By doing so, a linear antenna IC tag can be configured. The wire diameter of a linear antenna IC tag using a linear antenna is 0.5 mmφ or less even if it is thick.

[Configuration of linear antenna IC tag]
Next, a specific configuration of the linear antenna IC tag of the present invention will be described with reference to FIG.

FIGS. 1A and 1B show a case where a linear antenna IC tag is formed using a substrate such as an FPC substrate 2. The IC chip 1 is mounted on an FPC board 2 having a width substantially the same as the IC chip 1 having a width of about 0.4 mm, for example, 0.45 mm to 0.5 mm, and the terminals of the IC chip 1 and the pads and wiring portions of the FPC board 2 are soldered. Conduction is made by bonding, APC (Additive Conductive Plastic) or conductive adhesive. Then, keeping the distance between the antenna line by bent portion SC ₂ of the back side of the short-circuit conductor SC ₁ through the through hole SH of the FPC board 2, to create the inductance by the parallel line, the short-circuit conductor SC ₁ and bent portion SC ₂ is connected to the antenna line through a contact or a pad.

となるような長さの線状アンテナとなる。 The matching of the antenna line with the radiation impedance of the antenna slightly changes depending on whether it is connected symmetrically up and down across the contact of the IC chip 1 or only on one side, but the overall length of the closed circuit is mainly dominated by the inductance La It doesn't change much because it becomes the target. When a linear antenna is connected to the contact point of the IC chip 1 and the inductance of the linear antenna is configured, the closed circuit becomes an inductance La and resonates with the capacitance Ci of the IC chip.

It becomes a linear antenna of such a length.

  The conductor on the antenna side and the short-circuit line on the substrate are connected by the through hole SH, but it is better to connect the upper and lower two contacts. If an electric wire is also connected to the FPC board 2 along the antenna line, inductive coupling can be performed even when the contact is disconnected. However, with inductive coupling alone, the coupling changes depending on the line spacing, so the characteristics become unstable.

Linear antenna IC tag covers the IC chip 1 and the FPC board 2 or PI (polyimide) substrate, sealing, protective, mold _{M O} is performed by the purpose of the insulator to the insulating.

The mold _MO is a heat-melting plastic rubber having excellent flexibility or a thermosetting plastic such as epoxy (PE or ABS), but the material can be selected depending on the purpose. Mold M _O is comprises a keeping a size that does not interfere when passed when and needles to weave the fibers, the ability to reliably fixed so as not come off even if the IC and the conductive yarn is pulled Yes.

  1A is a view of the linear antenna IC tag as seen from the side of the FPC board 2 or the PI board, and FIG. 1B is a front side of the FPC board 2 on which the IC chip 1 is mounted. It is the figure seen from. FIG. 1C is a view of the linear antenna IC tag as viewed from the back side.

As an equivalent circuit of a linear antenna IC tag, as shown in FIGS. 1G and 1A, an inductance is a series of an inductance generated by a closed line by a short-circuit line SL and a conducting line SC from the IC and an inductance by a part of the antenna line. sum (La) and so as to either, FIG 1 (g) in parallel with the reactance X according to some inductance and antenna line short-circuit line SL and conductor SC and radiation resistance r _a is IC as (b) In either case of connection, the resonance can be obtained. In short, in FIG. 1 (g) (a), the antenna only radiates and resonates with the inductance La of the resonance circuit and the internal capacitance Ci of the IC. However, FIG. 1 (g) (b) also shows the reactance X of the antenna. This is an equivalent circuit when considered.

  The IC chip 1 can be connected to the substrate or the thin wire by any of ACP, bonding, face-down, and face-up. After fixing these, the whole is fixed and protected by molding.

  FIGS. 1G, 1A, and 1B are both in parallel resonance, and FIGS. 1G and 1B show the reactance X on the antenna side together with the inductance La for the resonance circuit. The antenna wire can be fixed at the two through holes SH of the conducting wire SC or at an appropriate location so that the current of the antenna wire and the current of the resonance circuit can be made common. In the unlikely event that the connection is disconnected, electromagnetic coupling can be performed.

  The linear antenna IC tag is finished to have a width of 0.8 mm or less and a thickness of 0.5 mm or less even at a thick portion of the IC chip 1. The other part is a fine wire and is finished to several tens to 100 microns.

Linear antenna IC tag of FIG. 1 (d) and only the antenna A ₁ of the resonant circuit and the upper antenna section shows the case where only one side of the upper. The line length of the resonant circuit is an inductance length and is almost the same as when there are upper and lower antenna lines, but the excitation is performed on one side of the antenna, but the characteristics are almost the same as when the antenna is above and below. The linear antenna IC tag of FIG. 1 (e) shows the case where the inductance part is configured equally on both sides of the antenna, and the linear antenna IC tag of FIG. 1 (f) has the inductance part on the upper side or the lower side of the antenna. There is almost no difference between the two as long as the resonant circuit can be configured by showing the configuration.

  FIG. 2 shows an integrated linear antenna IC tag of the present invention in which an IC chip 1 and a linear antenna are directly combined without using a substrate such as the FPC substrate 2. In general, this is an example of a case where the antenna is configured as a linear antenna, but a case where a thin antenna is used will be described below.

FIG. 2A shows a case where power is supplied at two points at the contacts P ₁ and P ₂ of the IC chip 1 without connecting thin wires. 2 (a) and 2 (b) are lines obtained by adding the antenna A ₁ having a length l ₁ of approximately 1/4 (λ / 4) to 1/2 (λ / 2) wavelength and a resonance portion having a length of 2l _5. 2 (a) and 2 (b), the antenna A ₁ having a length of ¼ to ½ wavelength plus the length l ₄ is changed to a length of 2l _{5 in} the linear antenna IC tag of FIG. The resonance current due to the inductance by the resonance circuit and the capacitance of the IC chip 1 is excited. The antenna is excited by this large resonance current. The inductance is generally indicated by jZ ₀ tanβl ₅ . Zo is the characteristic impedance of the closed parallel line portion with the length l ₅ , and l ₅ is about 10 to 25 mm.

Therefore, in the 1/4 wavelength antenna, the IC chip 1 is attached to the antinode portion of the current in FIGS. 2A and 2A, and the characteristic impedance Z of the parallel line portion by the length l ₅ that provides the resonance inductance. ₀ by the impedance Z _a of the lower IC is as follows.
Z _A = jZ ₀ tanβl ₅

In the case of a thin wire antenna, the width of the thick portion of the linear antenna IC tag can be set to 0.3 to 0.4 mm. On the other hand, the impedance of the antenna increases as it approaches the end of the antenna element having a length close to ½ wavelength. Therefore, in order to achieve matching with the IC chip 1, an appropriate position of the IC chip 1 is selected. Good. Since the voltage near the end of the antenna becomes high, it is used as an excitation voltage, and a part of the antenna is used as it is as a resonance circuit to resonate with the capacitance of the IC chip 1 and the antenna is excited by this resonance current. It can also be emitted. In this case, the total length of the antenna including the resonant coil length is about ½ wavelength. That is, the antenna itself including the antenna length (l ₁ + l ₄ ) + coil 2l ₅ becomes an approximately half-wavelength antenna, and an IC is attached to the end portion where the voltage is higher, and this portion constitutes a resonance circuit.

Therefore, if the antenna length is from a 1/4 wavelength monopole antenna to a 1/2 wavelength dipole antenna, the antenna also has almost only radiation resistance, and the radiation impedance can approach the resistance value of the IC chip 1. it can. The radiation resistance value of the half-wave antenna is about 73Ω, but the half-short antenna is 36Ω, and the induced voltage is low. Further, although the reactance value is slightly shorter than the half wavelength, the resonance circuit is created separately by an inductance circuit and resonates with the capacitance of the IC chip 1. In the case of using a half of the radiation element of the half-wave antenna, the radiation resistance value is about 73 / 2≈36Ω, and is easily matched with about 20 to 50Ω of the IC chip 1. The impedance jωL due to the inductance L is about 200Ω, which is almost equivalent to the reactance (1 / jωC) due to the capacitance of the IC chip 1. Since the capacity of the IC is not constant by the manufacturer, the length ₁₅ will vary accordingly.

Another important configuration example of the linear antenna IC tag of the present invention will be described with reference to FIG. 2 (b) is a reactance for creating a resonant circuit by an inductance to volume of the IC chip 1 of the linear antenna IC tag of FIG. 2 (a), without creating a short circuit due to the line length l ₅ A linear antenna IC tag realized at high frequency is shown.

  This linear antenna IC tag is an inductance in which an antenna portion becomes a resonance circuit by simply extending two thin parallel lines or Lecher lines and periodically bonding the IC chip 1 to this line at a predetermined interval. This is an epoch-making IC tag that can constitute a part, can form a resonance circuit with the capacitance of the IC chip 1, and can constitute a radiation part. The parallel line portion is not short-circuited by insulation except for the connection portion with the IC chip 1.

  In the conventional UHF IC tag, a closed circuit having a total line length of about 40 to 50 mm is formed for the capacitance of the IC chip 1 and the inductance for resonance, and the inductance is created as a resonance circuit. The method of doing was adopted. On the other hand, in the linear antenna IC tag of the present invention, the same effect as that of adding an inductance circuit at a high frequency can be obtained without creating a closed circuit by electrically creating a reactance circuit with a line length of parallel lines. Can do. The linear antenna IC tag according to the present invention is a system that exhibits the same effect as the closed circuit in terms of high frequency by controlling the line length even with an open terminal without depending on the closed circuit. Can also be used.

In the linear antenna IC tag of FIG. 2B, the left line is a single line above and below the IC chip 1, and one terminal of the IC chip 1 is connected to this line. The upper line length across the IC chip 1 is about 1/4 to 1/2 wavelength, and the lower line is the electrical length of 1/4 wavelength plus l ₆ ≈about 25 mm to 40 mm. have. The added length line is necessary for artificially constructing an inductive reactance, that is, an inductance for resonating with the capacitance of the IC chip 1 at the feeding point of the IC chip 1. In this way, it is not necessary to create a closed circuit simply by extending the line length, so that a thin line can be bent or connected as in the linear antenna IC tag of FIG. Therefore, a linear antenna IC tag can be continuously formed simply by mounting the IC chip 1 on parallel thin wires and bonding them. Since the linear antenna IC tag has only the IC chip 1 bonded to two thin wires, only the portion of the IC chip 1 becomes a protrusion and does not form a thread, but it is 0.4 mm to 0.45 mm square or less. Since the IC chip 1 is placed on the thread-like line, it can be passed through the hole of the needle for sewing, and can be directly or indirectly sewed on clothing, cloth, leather, gauze, wrapping bag tag or the like. Further, if the IC chip 1 becomes smaller in the future, it becomes easier to pass the linear antenna IC tag through the needle hole.

  Since the lower line length is longer than ¼ wavelength, power is supplied to the IC chip 1 at a point where the maximum current value is obtained on the way and the current gradually decreases, so the lower line is seen in this part. It can be seen from the fact that it becomes inductive (inductive) from the load side open (open) or a point that is a quarter wavelength beyond the open end. This will be described later with reference to FIG.

That is, the line B ₂ in the downward direction of the left is the line that acts as a resonant inductance. Whereas the right of the line B ₁ in downward for an antenna A ₁ Like 1/4 wavelength to 1/2 antenna radiation of a wavelength on the left side, functions as a radiating antenna similar to the left side of the upper antenna wire.

  As described above, the above principle can be applied regardless of the thickness of the line. Further, as described above, the material of the antenna element may be a metal, a conductive polymer, or a shape memory alloy, and can be selected depending on the field in which the linear antenna IC tag is used.

FIG. 2C shows a further simplified structure of the linear antenna tag. FIG. 2 (b), the was implemented in line B ₂ separate left the elements to create the reactance circuit, also not shown which in FIG. 2 (c), the by adjusting the length of the right antenna element, Inductance reactance is created and radiation is performed, and although it is not as large as the antenna of FIG. 2B, a performance having a sufficient communication distance can be obtained. Of course, it is the same even if the upper and lower antennas are switched. The antenna is the simplest in structure, and is suitable for continuously producing the linear antenna IC tag of the present invention.

The linear antenna IC tag of FIG. 3A has an antenna configuration similar to that of the linear antenna IC tag of FIG. 2A, and the principle is the same as that of the linear antenna IC tag of FIG. Are the same. Figure 3 linear antenna IC tag (a) is about 1/2 in the case of providing a resonant circuit approximately at the center of the wavelength antenna, two parallel lines with short lines SC in the middle below the antenna A ₂ This is an example in the case where a resonance part is configured by using. Compared with FIG. 2B, there is a problem that the number of connection portions SP for short-circuiting increases in the middle of the line. Therefore, in order to eliminate this connection part, an equivalent inductance, that is, a pseudo reactance is created by using a parallel line part as shown in FIGS. 3B, 3C, and 3D. A resonance circuit can be configured with a capacitance of 1, and a resonance circuit by LC can be obtained, and radiation from a lower antenna element can also be obtained.

FIG. 3B shows a linear antenna IC tag when the terminal of the IC chip 1 does not have a short-circuit portion, but the antenna element itself further has an inductive reactance by a method of forming the short-circuit portion at a high frequency. ing. That is, unlike creating an inductance that matches the capacitance of the IC chip 1 by a short circuit, an open circuit having an electrical length of about ¼ wavelength is added to create an equivalent inductance, thereby creating a high-frequency short circuit. It constitutes. FIGS. 3 (a) linear antenna IC tag short-circuited line is not short-circuited in the middle of the connecting portions SP below the antenna A ₂ by SC as compared to the.

In addition to the antenna B ₁ , there is a parallel-line antenna B ₂ , and the tip end OEB ₂ is open, so that the current is almost zero and the voltage is maximum. As a result, the current value is maximum and the voltage is low at a location close to a power supply unit having an electrical length of ¼ wavelength. That is, the specific resistance value Z = V / I of the voltage and current value is a low value.

Next, FIG. 3C shows a linear antenna IC tag when the lower antenna element of FIG. 3B is replaced, and is a circuit equivalent to the linear antenna IC tag of FIG. a middle with no contact on the structure of B ₂ FIG. 3 (a), shows a linear antenna IC tag characteristics equivalent of (b). That is, the antenna B ₁ and parallel to the antenna B ₂ provided, the length of the line was a little longer, similarly to the inductance for resonance with capacitance of the IC chip 1 reactance seen by the power supply portion P ₂ is an inductive By setting the length so as to function in a pseudo manner, the inductance can be loaded in a pseudo manner. That is, by abdomen current antenna B ₂ in the middle of the antenna without providing a short-circuit portion B ₂ is constructed such that the same position as the short-circuit portion, pseudo-inductance the same effect as a short circuit portion A circuit can be constructed.

Linear antenna IC tag of FIG. 3 (d) the elements of the lower reactance circuit, FIG. 2 (a) (i) above the antenna A ₁ in example where the antenna element, the linear antenna (b) Equivalent to IC tag. The antenna A ₁ and the antenna B ₂ are configured by a single line, and have a function of a resonance circuit that gives inductance to the capacitance of the IC chip 1.

The operating principle of the linear antenna IC tag of the present invention will be described in more detail with reference to FIG. FIG. 4A is a diagram showing the current distribution (dashed line) and voltage distribution (dashed line) of the thin antenna A of the linear antenna IC tag, and the tip of the thin antenna A is open. Therefore, the conduction current flowing through the antenna line becomes zero at the tip, and gradually increases toward the IC chip 1 side with a substantially sin distribution. Arrows indicate the direction of current flow, and are generally alternating, so they change alternately. For convenience, it is assumed that an upward current flows. Since the length of the upper thin-line antenna A is about ¼ to ½ wavelength, near the power supply portion to which the IC chip 1 is attached, the current amplitude Io is almost equal, and the voltage Vo is close to zero. Since there is radiation from the thin wire antenna, the voltage Vh does not become zero because of radiation resistance, and Vo / Io becomes a predetermined value. The radiation resistance at the feeding portion of the half-wave (λ / 2) antenna is about 73Ω, and about half the length, that is, the quarter-wave antenna is about 36Ω. Since the resistance of the IC chip 1 is about 20Ω to 50Ω, the matching with the IC chip 1 can be obtained. Powered by induced voltage and current on the thin line from the contact point of the IC chip 1, a portion of current flows to the IC chip 1, a portion of the current I _L flowing in the resonant circuit L. The resonance current generally has a large value, but this part excites the antenna. Current I _L is also changed amplitude or phase by the length of the line.

  On the other hand, the voltage tends to gradually increase. In the power supply portion of the IC chip 1, power is supplied due to the potential difference between both ends. However, since the resonance current flows through the resonance circuit L although it is stored power, The IC chip 1 is excited at the contact point of the chip 1 with a high voltage and a high current. Therefore, it is possible to excite the thin-line antenna A again with the signal from the IC chip 1 and re-radiate the signal from the IC chip 1.

  Next, FIG. 4B shows a linear antenna IC tag when the IC chip 1 is attached to a slightly different position so that it is attached not to the center of the half-wave antenna but to the end of the antenna. The induced voltage increases as the antenna length increases. This antenna length is also effective in increasing the re-radiation by flowing a large current through the antenna by obtaining a resonance state.

In this case the mounting position of the IC chip 1 includes a resistance component r _i of the IC chip 1 and the radiation resistance r _a is as-matched (r _i ≒ r _a) is a position, the inductive reactance La of the resonance circuit and the antenna The IC capacitance Ci can resonate. Therefore, the IC chip 1 is attached at a position satisfying the following expression.

The current and voltage distribution at the mounting portion of the IC chip 1 are slightly different from those in the case of FIG. In FIG. 4B, the current I _L2 flowing through the resonance circuit L is also low at the position where the voltage V _h is high and the current I _A2 is already low. Therefore, the voltage V _h is higher applied to the IC chip 1, the resistance value r _{a =} V h _/ I _R becomes a high resistance, the matching is suitable for voltage supply of those hard to take.

  The central position of the antenna and the IC chip 1 is not always best. Depending on the line length, the position where the power feeding part is shifted from the central part may be optimal.

  FIG. 4C shows a linear antenna IC tag when a circuit equivalent to the short circuit constituting the resonance part of FIG. 4A is closed, that is, opened without using the short circuit, that is, realized by an open line. Show. As a result of the measurement, exactly the same characteristics are obtained, and it is possible to construct a pseudo short circuit without causing a short circuit in the antenna as in the case of the line. Even if it is not, the resonance between the capacitance of the IC chip 1 and the inductance of the antenna line can be obtained also by an open line or an antenna line that is an odd multiple of 1/4 wavelength in electrical length. No communication characteristics are obtained.

  4 (a), 4 (b), and 4 (c) are linear antenna IC tags having an antenna on one upper side. When an inductance circuit is formed on both upper and lower sides, the upper and lower sides are as shown in FIG. 6 (f). The same applies to the case where the circuit is divided, and half of the inductance is formed by the upper and lower lines, that is, the inductance is distributed by L / 2 and the inductance L is obtained by both of the upper and lower lines.

FIG. 4E shows an example in which the bent antenna A is bonded to the terminals of the IC chip 1 as shown in FIG. After the bonding, firmly secure the leads of the IC chip 1 and the antenna by molding M _O as shown in FIG. 4 (g), so that the contact does not come off by pulling and bending.

Ｚ_Ｂは開放端であるからＺ_Ｂ＝∞とする。 The reason why an inductive reactance can be created by comparing an antenna element with a transmission line will be described with reference to FIG. FIG. 5A shows a conical transmission line proposed by Schelkunoff. If the upper and lower antenna lines are considered as lines, the following equation holds because they can be considered by replacing them with the equivalent transmission lines in FIG.

Since Z _B is an open end, Z _B = ∞.

Here, Z _av is the average characteristic impedance of the line. Z _in is the impedance of the power feeding unit, and is the impedance of the load viewed from the load Z _{B with a} line length l.

Since the tip is cut off, that is, in the open state, if the impedance Z _B at the tip is infinite Z _B = ∞, Z _in is expressed by the following equation, and becomes capacitive reactance in the range of l <λ / 4. .
Z _in = −jZavcotβl

  In the range of λ / 4 <l <λ / 2 where l is λ / 4 or more and smaller than λ / 2, the inductive reactance is shown as shown in FIG. This is shown by a tangent or cotangent curve as shown in FIG. In other words, the reactance of the line becomes inductive at a place longer than a quarter wavelength from the tip, and becomes inductive at a line longer than about 8 cm of a quarter wavelength (about 8 to 16 cm). Inductive reactance can be obtained without adding. Although it is an open line, it can have an inductive reactance, so that it is possible to create a common inductance with the capacitance of the IC chip 1. Therefore, it is possible to realize a substantially resonant state by simply connecting a single line having an appropriate length to the upper side or the lower side across the IC chip 1. FIGS. 5E and 5A show a case where only one side on the lower side is made longer than about 1/4 wavelength in electrical length, and an almost equivalent induction reactance L is created only on one side. FIG. ) Shows a case where L / 2 inductances are created on both sides, and L common inductances are created on both sides.

  The detailed values of the real part and the imaginary part of the linear antenna are developed by Mr. Hallen's formula, and Mr. King et al. Calculate in detail and are published in IRE etc., so they are not described here.

  Next, various examples of the linear antenna IC tag having a structure capable of simultaneously realizing the operation as the antenna of the IC tag while creating the inductive reactance by the open type line will be described with reference to FIG. In addition, the numerical value shown in the figure shows the length of the antenna wire, and the unit is mm.

  FIG. 6A shows a linear antenna IC tag having a structure substantially similar to that shown in FIG. The linear antenna IC tag of FIG. 6B is short-circuited at a position corresponding to the short-circuit portion in order to create a circuit equivalent to the circuit constituting the reactance portion of the linear antenna IC tag of FIG. By constructing the antinode portion of the current having the same effect, the reactance viewed from below constitutes an inductive reactance equivalent to that which is short-circuited at the connection portion SP as described in FIG. To do. As a result, an inductance value equivalent to the capacitance of the IC chip 1 is formed, so that a resonance circuit can be added.

The linear antenna IC tag of FIG. 6 (c) shows a case where the left and right elements below the linear antenna IC tag of FIG. 6 (b) are exchanged, although there are some differences, the line of FIG. 6 (a). The operation is equivalent to the operation of the rectangular antenna IC tag. The linear antenna IC tag of FIG. 6 (d) distributes reactance by half by the parallel two lower lines, and forms a reactance part L equivalent to the linear antenna IC tag of FIG. 4 (a). Show. If linear antenna IC tag shown in FIG. 6 (e) is the length of the antenna A ₁ is configured longer than 1/4 wavelength, capacitance co range inductive reactance of the IC chip 1 to a feeding portion of the IC chip 1 There shows a case where element B ₂ is constituted by such a length is inserted. This is a circuit equivalent to the linear antenna IC tag of FIG.

The antenna of the linear antenna IC tag of FIG. 6F is an antenna equivalent to the linear antenna IC tag of FIG. Shown in FIG. 6 (g) shows a linear antenna IC tag when combined radiating elements and reactance circuit only antenna A ₁ and device B ₂ by changing the upper and lower antenna elements of the IC chip 1 is further simplified. The upper antenna A ₁ is an element having a wavelength of about ¼ to ½ wavelength, but the lower element B ₂ has a length to which inductive reactance is added. The length of the antenna element is about 80 to 100 mm as shown in the figure, and the length of the element B ₂ for inductive reactance is about 130 mm. However, in some cases, the inductance value is insufficient. There are cases where resonance with the capacitance of the IC chip 1 is impossible. Even if the line length and the thickness of the antenna do not completely resonate, the communication distance does not deteriorate so much.

FIG. 6 (h) shows a linear antenna IC tag in the case where the upper and lower antennas A ₁ and B _{2 form} a radiating element and an inductive reactance. The approximate length is about 105 mm on both the top and bottom.

  In this way, an equivalent reactance circuit, that is, an inductive reactance, can be configured simply by changing the lengths of the antenna elements on both sides of the IC chip 1, and a line with an equivalent resonance circuit can be formed without using a resonance short circuit. An antenna of the antenna IC tag can be configured.

It shows an equivalent circuit of a resistor r _ics and the capacitance C _ics reactance circuit and the IC chip 1 of the synthesis of the radiation resistance r _a and the antenna inductive reactance section La by the antenna in FIG.

7 (a) is an illustration in parallel circuit connection, guided radiation resistance r _a of the antenna side reactance La are connected in series, IC chip 1 side of the resistor r _ics, and a capacitor C _ics in parallel Has been. Figure 7 (b) shows the case where the inductance La becomes parallel with the antenna radiation resistance _{r a} and the antenna reactance X, has further resistance _{r ics} of the IC chip 1, and parallel with the capacitive _{C ics.} FIG. 7C shows an equivalent circuit in the case where the radiation resistance r _{a of the} antenna, the inductive reactance X, the resistance r _ic of the IC chip 1 and the capacitance C _ic are all in series.

  Since the inductance can be created not only by the antenna element to the IC chip 1 but also by the series circuit without connecting the inductance due to the short circuit in parallel, the circuit viewed from the IC chip 1 side can be obtained only by changing the antenna element. An inductance effect can be added both in parallel and in series.

[Method for manufacturing linear antenna IC tag]
A method for continuously manufacturing the linear antenna IC tag of the present invention will be described with reference to FIG. This manufacturing method does not require an expensive manufacturing machine for making an inlay-type tag, and a general thin wire handling machine and a thin wire that becomes an antenna by bonding, molding, potting, etc., and 0.4 to 0.45 mm This is a method in which a linear IC chip 1 is connected to the corner IC chip 1, and this is molded and wound around a thread or the like so that it can be sewn. Such a manufacturing method does not require a large-scale manufacturing machine for manufacturing an inlay-type tag, and can be manufactured even in a small factory, so it can be manufactured at a low price and with a large number of manufacturing. So it is suitable for flexible manufacturing. Although it may not necessarily be a fine line depending on the purpose, a case where it is constituted by a fine line in consideration of sewing or the like is shown. The thin wire of the antenna can be selected depending on the intended use, such as a circular cross section, an elliptical shape, or a flat shape.

  FIGS. 8A, 8A, and 8B show a method in which two ultrafine wires are arranged in parallel, the IC chip 1 is periodically connected between the two wires, and this is molded. The interval between the parallel lines is about 0.3 mm, which matches the terminal interval of the IC chip 1. The method of keeping the interval may be a method of covering with an insulator such as a thread or a thermoplastic. As a configuration of the linear antenna IC tag, a case where the linear antenna IC tag is continuously created with the configuration shown in FIGS. 3B, 4C, 4C, 6B, 6C, and the like is shown. . The arrows in FIGS. 8A and 8A indicate the cutting position of the fine wire, and FIGS. 8A and 8B show the state after the cutting of the fine wire.

  A linear antenna IC tag may be manufactured continuously and separated into an appropriate line length. However, in order to continuously wind it up, it is guided as shown in FIGS. By separately attaching the yarn GL and separating and continuously manufacturing only the antenna wire that is formed as a linear antenna IC tag, the linear antenna IC tag can be handled as a continuous yarn.

  If the mark Ma is added to the yarn guide GL at a position that can be separated from the terminal end of the antenna of the linear antenna IC tag, it can be continuously applied from, for example, a bobbin or bobbin wound with the linear antenna IC tag. When the linear antenna IC tag is supplied to a sewing machine or the like, it becomes a mark to be separated individually.

  FIGS. 8A and 8E show a case where the yarn guide GL is wound around (strands) and integrated with the linear antenna IC tag. Instead of the yarn introduction GL, it may be continuously connected with a plastic film such as a laminate film.

  8 (a), (f), and (g) are linear shapes that are apparently made up of a single line that does not have a parallel line for forming a reactance portion as shown in FIGS. 6 (g), (h), and the like. The case where the yarn introduction GL is wound around the antenna IC tag is shown.

  FIGS. 8A and 8H show a case where the linear antenna IC tags with a resonance circuit shown in FIGS. 4A and 4B are continuously connected by the yarn introduction GL. This is effective when sewing a linear antenna IC tag continuously using a sewing machine.

  Examples of connections between the terminals of the IC chip 1 and the antenna wires are shown in FIGS. 8B, 8A, 8B, and 8C. It can be seen that the 0.3 to 0.45 mm square IC chip 1 and the 0.02 to 0.05 mmφ fine wire are connected at the terminal portion, molded Mo, and finished to a thickness of about 0.4 mm. The most appropriate method is preferable for the position of the terminal and the bonding and molding with the antenna wire.

  FIG. 8 (c) shows a linear antenna IC tag when a thin plastic film F is sandwiched from both sides instead of the yarn introduction GL and fixed or glued. As shown in the figure, a continuous linear antenna IC tag is used, which is cut off at the Y position later.

  Further, when covering the linear antenna IC tag made of fine wires as shown in FIGS. 8D and 8E, the soft plastic E is continuously formed through the injection or nozzle so as to continuously cover the cable. You may make it coat | cover and isolate | separate this as a tag later. The arrow in the figure indicates the cutting position.

  A manufacturing method in the case where the linear antenna IC tag of the present invention is continuously manufactured will be described with reference to FIG. In FIG. 9A, the antenna wire AL and the yarn introduction GL are wound around the antenna wire supply roll 20 and the yarn introduction supply roll 21. FIG. 9A shows a case where two antenna lines AL are supplied, but only one antenna line AL may be supplied. Further, when the yarn introduction GL is not used, it is not necessary to supply the yarn introduction GL. The IC chip 1 supplied from the IC feeder 23 is bonded to the antenna line AL supplied from the antenna line supply roll 20 by the IC bonding machine 24. In this case, the yarn introduction GL is also twisted together.

  The antenna line AL to which the IC chip 1 is bonded is molded by the molding machine 25. Furthermore, the yarn introduction protective material 26 a supplied from the yarn introduction protective material supply roll 26 is joined at the joint portion 27. Thus, the continuously manufactured linear antenna IC tag is finally wound around the winder 22.

  When affixing the plastic film F as shown in FIG. 8C, the plastic film F wound around the lower roller is supplied, and the linear antenna IC tag is continuously bonded and wound. .

  9B and 9C, the linear antenna IC tag 10 produced continuously is wound around the thread winding 28, or the tape-like IC tag 12 produced continuously is taken up on the reel 29. Indicates the state. FIG. 9D shows a state where the linear antenna IC tag 10 in a continuous state is coated with an insulating coating liquid 31 in the insulating coating tank 30.

  In the above example, the method of directly connecting the antenna line AL to the terminal of the IC has been described. In FIG. 9E, a holder 57 that is a small component for connecting the IC chip 1 and the antenna line AL is used. An example is shown. The holder 57 has a function of holding the antenna line AL and connecting the antenna line AL to a terminal of the IC chip 1. The holder 57 includes a conductor portion 57a and an insulator portion 57b. The antenna line AL is placed on the insulator 57b. The conductor portion 57a penetrates the FPC board 2 and electrically connects the round 1a of the IC chip 1 and the antenna line AL.

[Example of use of linear antenna IC tag]
In FIG. 10, the IC chip 1 of the linear antenna IC tag 10 has an interface and can be connected to the IC 42 b such as the sensor 42, and the data of the sensor 42 can be read as data from the response signal of the linear antenna IC tag 10. An example of the case is shown. The sensor 42 includes a sensor element 42a and an IC 42b.

For example, the sensor data is transmitted to the linear antenna IC tag 10 via the interface of the IC chip 1 attached to the linear antenna IC tag 10 of the present invention attached to clothing or wearable, for example, I ² C, PS1, GP1, etc. The data is transmitted to the IC chip 1, and this data is sent out as a response signal in accordance with a command from the reader and read on the reader side. In this configuration, data measured by a temperature sensor, a humidity sensor, a pulse sensor, an atmospheric pressure sensor, a vibration sensor, a corrosion sensor, and the like are sent back. The reader may be a fixed reader 40 or a handy terminal 41. This data is appropriately acquired and stored as data, and is transmitted to a necessary place through a communication line or the like.

  When the electric power is transmitted as a radio wave from the reader side, the electric power becomes passive, and the linear antenna IC tag can be accessed at a distance of about 1.5 to 2 m. Increasing the power on the reader side further increases the communication distance. In the case of an active type linear antenna IC tag in which power is supplied from a battery or the like and power is not supplied from the reader side, data can be acquired at a communication distance of about 10 m.

  Next, an example using such a linear antenna IC tag will be described with reference to FIG.

  FIG. 11A is an example in which the linear antenna IC tag 10 of the present invention is sewn into a cloth such as a gauze 50, and since it is thread-like, it can be easily sewn into the gauze 50 or the like with a sewing machine. FIG. 11B shows an example in which the linear antenna IC tag 10 of the present invention is sewn into the lab coat 51 or a sewn name tag or the like is attached. It can be attached to appropriate places such as the collar, sleeve, hem, chest pocket of the white coat 51. In addition, the direction attached to the skirt leaves the human body, and the influence from the human body can be reduced.

  FIG. 11 (c) shows a case where a linear antenna IC tag is sewn into various medicines 52 or pasted so as not to stand out. FIG. 11 (d) shows a case where the linear antenna IC tag 10 of the present invention is buried in an upper part 5 mm to 7 mm away from the skin in a bracelet 53 made of a bracelet-shaped silicon rubber or the like. It is possible to manage the state of a patient or the like with the bracelet 53 attached. If the filamentous antenna of the linear antenna IC tag 10 is several mm away from the human body, the influence of the human body can be reduced.

  FIG. 11E shows an example in which the linear antenna IC tag 10 is attached together with a seal or the like to various plastic or glass containers 54 or the like. At the time of attachment, the linear antenna IC tag 10 may be attached at the same time when attaching a price list sticker or a product name sticker. FIG. 11 (f) is an example in which the antenna wire of the linear antenna IC tag 10 is not a string but a solid columnar antenna 11, and shows a state where it is attached to the container 55.

  FIG. 12 shows an example in which the linear antenna IC tag 10 is sewn into a piece of cloth 60 such as a brand tag or a name tag. FIG. 12A is a diagram showing a state where the linear antenna IC tag 10 of the present invention is sewn in a zigzag manner on a piece of cloth 60. Since it has a thread-like shape, it can be easily sewn with a sewing machine or the like, and is suitable for mass production. FIG. 12B shows a state in which the antenna wire of the linear antenna IC tag 10 is passed through the sewing needle 61. FIG. 12C shows a state in which the linear antenna IC tag 10 is sewn to the name tag, the brand tag, the cloth piece 60 and the like by the sewing needle portion 62. FIG.12 (d) has shown the state in the middle of the process of sewing similarly to FIG.12 (c). In this way, the cloth tag 13 can be manufactured by simply stitching the linear antenna IC tag 10 into the piece of cloth 60 in a zigzag manner. The linear antenna IC tag 10 may be sewn into a cloth fabric.

  FIG. 13 is a diagram showing a state in which the linear antenna IC tag 10 of the present invention is sewn into a garment 70 such as a suit, sportswear, casual wear, etc., and is used for distribution of clothing, retail, cleaning maintenance, and the like. Can do.

  FIG. 14A shows an example when the linear antenna IC tag 10 is attached to the plastic case 80. As shown in FIG. 14 (b), the linear antenna IC tag 10 has an inconspicuous structure when it is configured with a thin antenna line. it can. FIG. 14C shows a state where the linear antenna IC tag 10 is attached to the plastic case of the magnetic recording medium 82. FIG. 14D shows an example in which the linear antenna IC tag 10 is embedded in or attached to a rubber tube to be attached to the rubber tire 83 or the like. FIG. 14 (e) shows that it can also be used when the parallel or single antenna wire of the linear antenna IC tag 10 is wound like a coil or a spring to expand and contract or give elasticity. FIG.

  FIG. 15 shows a case where the linear antenna IC tag 10 is used for automatic recognition and tracking of individuals and patients in hospitals and home medical care sites. FIG. 15A shows an example in which data is captured from the linear antenna IC tag 10 of the patient 93.

  In the case of using an IC card, confirmation or transaction based on the will of the person was the main. However, if the linear antenna IC tag 10 of the present invention is used, the person does not notice, forgets, or has dementia Because it is possible to automatically recognize and confirm the patient himself even when the patient is sick or the life phenomenon has ended, it is possible to construct a system that can automatically notify and manage complicated and time-consuming work. .

  FIG. 15A shows an example of collecting data by attaching the linear antenna IC tag 10 to the clothing of the patient 93. Data from the linear antenna IC tag 10 attached to the patient 93 is received by the UHF reader 90 and sent to the LAN 92 via the controller 91. On the other hand, data from the linear antenna IC tag 10 is received by the smartphone 94, the tablet 95, and the reader 97 and sent to the PC 96 and the cloud 99.

  With reference to FIG.15 (b), the linear antenna IC tag 10 used in a hospital is demonstrated. The ID and data from the linear antenna IC tag 10 sewn into the clothing or the bracelet (bracelet) attached with the linear antenna IC tag 10 is read by the reader 97, and is transmitted to the net via a controller or the like by wire or wireless. The data is transmitted and stored in the server, so that the parties concerned can always see it anytime and anywhere, and it can be seen on the PC 96, tablet 95, smartphone 94, and also in the examination room of the hospital 98 and the PC 96 of the facility. be able to.

  Since the data of the patient 93 is accumulated in the personal file, it is possible to know the change of the data with time. FIGS. 15B and 15A show a state where the doctor gives an appropriate instruction to the patient 93 based on the data in the examination room. As shown in FIGS. 15B and 15B, the location of the doctors and patients can be managed by the reader 97 even in a large hospital 98 or the like. Further, as shown in FIGS. 15B and 15C, the movement and data of the patient 93 who is resting in the hospital room or the patient 93 who is sleeping at home can be collected. When used in home medical care, it is possible to monitor the living reactions of the elderly by attaching a reader to the kitchen, toilet, living room, etc. and performing remote monitoring.

  FIG. 16 shows an example of how the linear antenna IC tag 10 of the present invention installed in a garment factory is useful on the market, and is useful in logistics using traceability and ID.

  Referring to FIG. 16, the garment to which the linear antenna IC tag 10 is attached by the sewing machine 100 of the sewing factory is loaded on the container 101 and brought into the hanger 102 in the store. Select necessary items from the products in the store and make payment at the cash register 103, but since the linear antenna IC tag 10 is added, it is automatically read by the reader, the price is displayed almost instantly, and purchase The person can pay in a short time. It can also be unmanned. If no payment is made, it can be determined what product has not been settled, so the shoplifting prevention device 104 installed at the exit determines the product, and the product can be returned to the store. In addition, it is possible to automate the product recognition in the management when the laundry is taken out at the cleaning shop 105, the used market, etc., or to eliminate the mistake in selecting the product. Further, when a product with a linear antenna IC tag is transported from the cleaning shop 105 to the cleaning factory 107 by the transport vehicle 106, the product can be traced.

  As described above, the linear antenna IC tag 10 of the present invention can be easily manufactured, can be mounted inconspicuously, and a substrate added thereto receives data from the sensor using the interface of the IC chip 1, It also has a function to transmit to the reader. The antenna can be constituted by a linear antenna, and the linear antenna IC tag in which the resonance circuit can be incorporated by a thin line can be constituted by a narrow structure. In addition, since a resonance circuit with a single-line or two-line pseudo-reactance having no connection point can be configured, it is possible to configure a combination of upper and lower antenna lines with only the contact point of the IC chip 1 and easily and economically. A flexible linear antenna IC tag can be provided.

1 IC chip 2 FPC board 10 Linear antenna IC tag 13 Cloth tag 42 Sensor M ₀ mold

Claims (14)

An IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire connected to the first terminal and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
A metal wire connected between the first terminal and the second terminal, and having a predetermined length that artificially configures a resonance circuit with the IC chip;
A linear antenna IC tag comprising: An IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire connected to the first terminal and having a length obtained by adding a predetermined length to a length of ¼ to ½ wavelength of a radio wave transmitted and received by the passive tag;
A metal wire connected between the first terminal and the second terminal, and having a predetermined length that artificially configures a resonance circuit with the IC chip;
A linear antenna IC tag comprising: An IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire having a length of ¼ to ½ wavelength of the radio wave transmitted and received by the passive tag, which is connected to each of the first and second terminals;
Further, a metal wire connected to the first terminal for simulating a resonance circuit with the IC chip, which is longer than ¼ wavelength in electrical length of the radio wave,
A linear antenna IC tag comprising: An IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire connected to the first terminal and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
A metal wire connected to the second terminal, having an electrical length of the radio wave longer than a quarter wavelength, and forming a pseudo resonant circuit with the IC chip;
A linear antenna IC tag comprising: An IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire connected to the first terminal and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
A first metal wire connected to the first terminal and having an electrical length longer than ¼;
A second metal wire connected to the second terminal and connected from the open end of the first metal wire to the quarter wavelength position;
A linear antenna IC tag comprising: An IC chip for a passive tag having a first terminal and a second terminal;
Two antenna lines connected to the first terminal and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
A metal wire connected to the second terminal and configured in a pseudo manner as a resonance circuit with the IC chip having an electrical length longer than the quarter wavelength;
A linear antenna IC tag comprising: An IC chip for a passive tag having a first terminal and a second terminal;
An antenna wire connected to the first terminal and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
Two metal wires having an electrical length connected to each of the first terminal and the second terminal and longer than the quarter wavelength;
A linear antenna IC tag comprising: An IC chip for a passive tag having a first terminal and a second terminal;
Two antenna lines connected to the first terminal and the second terminal, respectively, and having a length of ¼ to ½ wavelength of radio waves transmitted and received by the passive tag;
One end connected to the first terminal, the other end connected to a predetermined position of the antenna line connected to the second terminal, and a metal wire that artificially configures a resonance circuit with the IC chip;
A linear antenna IC tag comprising:   The linear antenna IC tag according to claim 1, wherein the metal wire is a conductive thread. And further comprising a substrate on which the IC chip is mounted / connected,
The substrate has another hole that is electrically connected to a hole into which the first terminal and the second terminal are inserted, and the antenna line and the metal line are connected to the other hole. The linear antenna IC tag according to any one of claims 1 to 9.   The connection part of the said 1st terminal and the said 2nd terminal of the said IC chip, the said antenna wire, and the said metal wire is molded, The any one of Claim 1 thru | or 10 characterized by the above-mentioned. Linear antenna IC tag. A sensor for acquiring predetermined data;
The linear antenna IC tag according to any one of claims 1 to 11, which reads data acquired by the sensor;
A reader for reading data from the linear antenna IC tag;
The system characterized by having. The linear antenna IC tag according to any one of claims 1 to 11,
A terminal or reader for receiving information from the linear antenna IC tag;
And a network for connecting the information received by the terminal or reader to the Internet.   A linear antenna IC comprising: a plurality of linear antenna IC tags according to any one of claims 1 to 11, wherein the IC chip, the antenna wire, and the metal wire together with a conductive yarn are manufactured. Tag manufacturing method.

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