JP6598300B2 - Inductive read / write device complex antenna and wearable terminal - Google Patents

Description

  The present invention relates to a composite antenna of an inductive read / write device and a wearable terminal.

  In recent years, wireless communication terminals such as cellular phones incorporating an inductive read / write device including an IC (Integrated Circuit) chip and an NFC (Near Field Communication) antenna have become widespread. When the wireless communication terminal is arranged so that the surface on which the NFC antenna is provided is placed over the irradiation surface of the electromagnetic field provided on the reader / writer, the IC chip in the wireless communication terminal is the NFC antenna. It communicates with the reader / writer via.

  Patent Document 1 discloses a mobile phone that communicates with a reader / writer by two or more antennas provided independently of each other in a state of being parallel to the surface of the housing inside the housing having a plurality of surfaces. Has been. In the mobile phone disclosed in Patent Document 1, the antenna is provided in a state parallel to the holding surface by holding any one of the plurality of surfaces provided with the antenna with respect to the electromagnetic field irradiation surface provided in the reader / writer. It is possible to communicate with the reader / writer via the single antenna.

JP 2007-288341 A

  By the way, in recent years, it has been desired to incorporate an inductive read / write device in a wearable terminal that is used by being worn on a part of a human body such as a finger or a wrist. As an antenna of the inductive read / write device built in such a wearable terminal, it is conceivable to use an antenna mounted on the mobile phone of Patent Document 1. However, the antenna of Patent Document 1 is only supposed to be mounted parallel to the surface of the casing because of the structure of the rectangular parallelepiped mobile phone. For this reason, there is a problem that it is difficult to directly mount the antenna of Patent Document 1 on a wearable terminal having, for example, a ring shape.

  In addition, the wearable terminal is assumed to be used by being worn on a part of a human body such as a finger or a wrist. Therefore, the wearable terminal is desired to be smaller and thinner than a mobile phone. For this reason, in order to mount the antenna of patent document 1 in a wearable terminal, it is necessary to reduce the size of the antenna. However, since the characteristics of the antenna depend on the size and the number of turns of the antenna, there is a problem that if the antenna is downsized, a non-communication area where communication with the reader / writer cannot be performed easily occurs.

  The present invention has been made to solve such problems, and an inductive read / write device that can be reduced in shape and size suitable for a wearable terminal while maintaining good communication characteristics for the reader / writer. An object of the present invention is to provide a composite antenna.

  A composite antenna of the inductive read / write device according to the first aspect of the present invention includes a linear loop antenna that is a linear loop antenna, and a pattern loop antenna that is formed on a magnetic sheet with a pattern of FPC (Flexible printed circuits). The linear loop antenna and the pattern loop antenna are connected in series.

  The composite antenna of the inductive read / write device according to the second aspect of the present invention includes a wire antenna formed by winding an electric wire around a magnetic core, and a pattern loop formed by a FPC (Flexible printed circuits) pattern on the magnetic material sheet. An antenna, and the wire antenna and the pattern loop antenna are connected in series.

  A wearable terminal according to a third aspect of the present invention includes a linear loop antenna that is a linear loop antenna, and a pattern loop antenna formed on a magnetic sheet with a pattern by FPC (Flexible printed circuits), The linear loop antenna and the pattern loop antenna are connected in series.

  A wearable terminal according to a fourth aspect of the present invention includes: an electric wire antenna formed by winding an electric wire around a magnetic core; and a pattern loop antenna formed by a pattern made of FPC (Flexible printed circuits) on a magnetic material sheet. The wire antenna and the pattern loop antenna are connected in series.

  According to the present invention, it is possible to provide a composite antenna of an inductive read / write device that can be reduced in shape and size suitable for a wearable terminal while maintaining good communication characteristics with respect to a reader / writer.

It is a figure which shows the structure of the short-distance radio | wireless communications system concerning Embodiment 1 of this invention. It is a block diagram which shows the compound antenna of the induction | guidance | derivation type read / write apparatus concerning Embodiment 1 of this invention. It is a figure for demonstrating the relationship between how to wind an antenna, and the direction through which an induced current flows. It is a figure for demonstrating the relationship between how to wind an antenna, and the direction through which an induced current flows. It is a figure which shows the structure of the ring type wearable terminal which mounted the composite antenna of the induction | guidance | derivation type reading / writing apparatus concerning Embodiment 2 of this invention. It is a figure which shows the example of mounting of the composite antenna to the ring type wearable terminal concerning Embodiment 2 of this invention. It is a figure which shows the example of how to hold the ring type wearable terminal concerning the reader / writer concerning Embodiment 2 of this invention. It is a figure which shows the example of how to hold the ring type wearable terminal concerning the reader / writer concerning Embodiment 2 of this invention. It is a figure which shows the example of mounting of the composite antenna to the ring type wearable terminal concerning Embodiment 2 of this invention. It is a figure which shows the example of how to hold the ring type wearable terminal concerning the reader / writer concerning Embodiment 2 of this invention. It is a figure which shows the structure of the ring-type wearable terminal which mounted the composite antenna of the induction | guidance | derivation type reading / writing apparatus concerning the modification 1 of Embodiment 2 of this invention. It is a block diagram which shows the compound antenna of the induction | guidance | derivation type read / write apparatus concerning the modification 2 of Embodiment 2 of this invention. It is a figure which shows the structure of the ring-type wearable terminal which mounted the composite antenna of the induction | guidance | derivation type reading / writing apparatus concerning the modification 2 of Embodiment 2 of this invention. It is a block diagram which shows the composite antenna of the induction | guidance | derivation type reading / writing apparatus concerning Embodiment 3 of this invention. It is a figure which shows the structure of the electric wire antenna concerning Embodiment 3 of this invention. It is a block diagram which shows the compound antenna of the induction | guidance | derivation type read / write apparatus concerning the modification of Embodiment 3 of this invention. It is a figure which shows the structure of the ring-type wearable terminal which mounted the composite antenna of the induction | guidance | derivation type reading / writing apparatus concerning the modification of Embodiment 3 of this invention. It is a figure which shows the example of mounting of the battery to a ring type wearable terminal.

Embodiment 1
First, the configuration of the short-range communication system according to the first embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, this short-range wireless communication system includes an inductive read / write device 100 a and a reader / writer 200.

  The inductive read / write device 100a includes a composite antenna 110a and an NFC IC 120. The inductive read / write device 100a performs near field communication with the reader / writer 200 using the composite antenna 110a. Specifically, the inductive read / write device 100 a communicates with the reader / writer 200 using an induced electromotive force generated in the composite antenna 110 a by electromagnetic induction from the reader / writer 200.

  The composite antenna 110a is a composite antenna for NFC. The composite antenna 110a will be described in detail later.

  The NFC IC 120 configures a control circuit for executing communication defined by the NFC standard, and controls wireless communication via the composite antenna 110a.

  The reader / writer 200 is installed at a predetermined place such as a ticket gate for public transportation such as a train, an entrance to a member space such as a company or a special room, or a counter of a commercial exchange such as a convenience store. It is. In the housing of the reader / writer 200, an antenna is provided on the back surface of the electromagnetic field irradiation surface in a state parallel to the irradiation surface. The reader / writer 200 is configured to irradiate the antenna with an electromagnetic field at a level that can be received by the communication partner up to a position several centimeters above the irradiation surface from the antenna.

  Next, the configuration of the composite antenna 110a of the inductive read / write device 100a according to the first embodiment of the present invention will be described with reference to FIG. The composite antenna 110a includes a linear loop antenna 111 and a pattern loop antenna 112.

  The linear loop antenna 111 is a linear loop antenna. The linear loop antenna 111 is made of, for example, a copper wire. Further, since the linear loop antenna 111 is a linear loop antenna, it can be arranged along the shape of the casing in the casing of the terminal to be mounted.

  The pattern loop antenna 112 is a loop antenna formed on a magnetic sheet with a pattern using FPC (Flexible printed circuits). Here, the magnetic material sheet is used as an electromagnetic shielding material for metal shielding. The type of magnetic material used for the magnetic material sheet is, for example, ferrite.

  In the composite antenna 110a, the linear loop antenna 111 and the pattern loop antenna 112 are connected in series. For this reason, the sum of the inductance value of the linear loop antenna 111 and the inductance value of the pattern loop antenna 112 becomes the inductance value of the composite antenna 110a.

  As described above, in the composite antenna 110a of the inductive read / write device 100a of FIG. 2 according to the first embodiment of the present invention, the linear loop antenna 111 and the pattern loop antenna 112 are configured to be connected in series. . In addition, the linear loop antenna 111 can be arranged along the shape of the casing within the casing of the terminal to be mounted, and even under the mounting condition of a wearable terminal that is smaller and thinner than a mobile phone. Can be implemented. Further, the configuration in which the linear loop antenna 111 and the pattern loop antenna 112 are connected in series allows the linear loop antenna 111 to compensate for a decrease in the communication characteristics due to the downsizing of the pattern loop antenna 112, thereby maintaining good communication characteristics. Is possible. Therefore, in the composite antenna 110a of the inductive read / write device 100a of FIG. 2 according to the first embodiment, the inductive type can be reduced in shape and size suitable for a wearable terminal while maintaining good communication characteristics with respect to the reader / writer. A composite antenna for a read / write device can be realized.

  Next, the relationship between how each antenna is wound and the direction in which the induced current flows in the composite antenna will be described with reference to FIGS. 3 and 4. The direction of the induced current flowing by electromagnetic induction changes depending on how the antenna is wound. For this reason, as shown in FIG. 3, in a composite antenna created by connecting two antennas in which the antennas are wound in opposite directions in series, the induced currents flowing through the antennas cancel each other out. Therefore, in the composite antenna 110a, as shown in FIG. 4, the linear loop antenna 111 and the pattern loop antenna 112 are configured such that the antennas are wound in the same direction.

  As described above, the composite antenna 110a of the inductive read / write device 100a according to the first embodiment of the present invention can be reduced in shape and size suitable for a wearable terminal while maintaining good communication characteristics with respect to the reader / writer. It is possible to realize a composite antenna for an inductive read / write device.

Embodiment 2
Subsequently, a composite antenna of the inductive read / write device according to the second exemplary embodiment of the present invention will be described. Embodiment 2 of the present invention is an example in which a composite antenna of an inductive read / write device is mounted on a ring-shaped wearable terminal. Note that the overall configuration of the short-range wireless communication system and the configuration of the composite antenna 110a of the inductive read / write device 100a are the same as the configurations shown in FIGS.

  First, the configuration of a wearable terminal equipped with the composite antenna 110a of the inductive read / write device 100a will be described with reference to FIG. In addition, in FIG. 5, the example using the ring-type wearable terminal 300a as a wearable terminal is demonstrated. The material of the ring-type wearable terminal 300a is, for example, ABS (Acrylonitrile Butadiene Styrene) resin. FIG. 5 is a front view of the ring-type wearable terminal 300a.

  The ring-type wearable terminal 300a includes a linear loop antenna 111, a pattern loop antenna 112, and an NFC IC 120. The linear loop antenna 111 and the pattern loop antenna 112 in the ring-type wearable terminal 300a are connected in series. ing. Moreover, in the ring-type wearable terminal 300a, as shown in FIG. 4, the linear loop antenna 111 and the pattern loop antenna 112 are configured so that the antennas are wound in the same direction.

  The linear loop antenna 111 is arranged along the ring shape of the casing in the casing of the ring-type wearable terminal 300a.

  The pattern loop antenna 112 is arranged in parallel to the XY plane. The pattern by FPC in the pattern loop antenna 112 is formed in parallel to the XY plane.

  Next, an example of mounting the composite antenna 110a on the ring-type wearable terminal 300a will be described with reference to FIG. FIG. 6 shows a ring-type wearable terminal 300a attached to a finger. FIG. 6 is a side view of the ring-type wearable terminal 300a of FIG. In the mounting example of FIG. 6, the linear loop antenna 111 is disposed so as to be at an angle of approximately 90 ° with respect to the pattern loop antenna 112, that is, approximately perpendicular to the XY plane.

  Here, how to hold the ring-type wearable terminal 300a of FIG. 6 over the reader / writer 200 will be described with reference to FIGS. As shown in FIG. 7, when the ring-type wearable terminal 300a of FIG. 6 is held over the reader / writer 200 so that the pattern loop antenna 112 becomes the bottom surface, the pattern loop antenna 112 and the antenna of the reader / writer 200 are substantially parallel. Therefore, the magnetic flux is effectively linked between the pattern loop antenna 112 and the reader / writer 200 antenna.

  However, the ring-type wearable terminal 300a is not necessarily held over the reader / writer 200 so that the pattern loop antenna 112 becomes the bottom surface. For example, as shown in FIG. 8, when the pattern loop antenna 112 and the reader / writer 200 antenna are held so as not to be substantially parallel, the pattern loop antenna 112 and the reader / writer 200 antenna are linked. The magnetic flux is reduced, and the communication characteristics with respect to the reader / writer 200 are not good with only the pattern loop antenna 112. In such a state, since the magnetic flux is linked between the linear loop antenna 111 and the reader / writer 200 antenna, the ring-type wearable terminal 300a has a good communication characteristic with respect to the reader / writer 200 by the composite antenna 110a. can do.

  Next, another example of mounting the composite antenna 110a on the ring-type wearable terminal 300a will be described with reference to FIG. FIG. 9 shows a ring-type wearable terminal 300a attached to a finger. FIG. 9 is a side view of the ring-type wearable terminal 300a of FIG. In the implementation example of FIG. 9, the linear loop antenna 111 is arranged so as to have an angle that is smaller than 90 ° and allows a design to the pattern loop antenna 112.

  Here, how to hold the ring-type wearable terminal 300a of FIG. 9 over the reader / writer 200 will be described with reference to FIG. As shown in FIG. 10, when the ring-type wearable terminal 300a of FIG. 9 is held over the reader / writer 200 so that the pattern loop antenna 112 becomes the bottom surface, the pattern loop antenna 112 and the antenna of the reader / writer 200 are substantially parallel. Therefore, the magnetic flux is effectively linked between the pattern loop antenna 112 and the reader / writer 200 antenna. Further, when the ring-type wearable terminal 300a of FIG. 9 is held over the reader / writer 200 so that the pattern loop antenna 112 becomes the bottom surface, the magnetic flux is linked between the linear loop antenna 111 and the antenna of the reader / writer 200. Therefore, the ring type wearable terminal 300a can make the communication characteristics with respect to the reader / writer 200 good by the composite antenna 110a.

  As described above, in the composite antenna 110a of the inductive read / write device 100a according to the second exemplary embodiment of the present invention, the linear loop antenna 111 is formed in the ring shape of the casing within the casing of the ring-type wearable terminal 300a. Are arranged along. That is, the linear loop antenna 111 can be mounted even under the mounting condition of a ring-type wearable terminal that is smaller and thinner than a mobile phone.

  In addition, the linear loop antenna 111 is arranged at an angle of about 90 ° with respect to the pattern loop antenna 112 in a state where the ring type wearable terminal 300a is viewed from the side, so that the pattern loop antenna 112 and the reader / writer 200 are arranged. Even when the antenna is held so as not to be substantially parallel to the antenna, the composite antenna 110a can improve the communication characteristics with respect to the reader / writer 200.

  In addition, the linear loop antenna 111 is arranged at an angle smaller than 90 ° with respect to the pattern loop antenna 112 in a state where the ring type wearable terminal 300a is viewed from the side, so that the pattern loop antenna 112 and the reader / writer 200 are arranged. The communication characteristics with respect to the reader / writer 200 when the antenna is held substantially parallel to the antenna can be made good.

Modification 1 of Embodiment 2
Subsequently, a composite antenna of the inductive read / write device according to the first modification of the second embodiment of the present invention will be described. Modification 1 of Embodiment 2 of the present invention is an example in which the linear loop antenna 111 of Embodiment 2 is formed using a metal frame on the surface of a ring-shaped wearable terminal. Note that the overall configuration of the short-range wireless communication system and the configuration of the composite antenna 110a of the inductive read / write device 100a are the same as the configurations shown in FIGS.

  FIG. 11 shows a configuration of a ring-type wearable terminal 300b in which a linear loop antenna 111 is formed using a metal frame on the surface of the housing. The ring-type wearable terminal 300b includes a metal frame on at least a part of the surface of the housing. In the ring-type wearable terminal 300b, the linear loop antenna 111 is formed using this metal frame. For example, in the ring-type wearable terminal 300b, a part of the surface of the housing is a metal frame, and the remaining part is ABS resin.

  As described above, in the composite antenna 110a of the inductive read / write device 100a according to the first modification of the second embodiment of the present invention, the linear loop antenna 111 of the second embodiment is connected to the casing of the ring-type wearable terminal 300b. It is formed using a metal frame on the surface. This configuration can have the same effect as that of the second embodiment. Moreover, in the ring-type wearable terminal 300b according to the first modification of the second embodiment, the linear loop antenna 111 is not disposed in the casing of the ring-type wearable terminal 300b, and thus the ring-type wearable terminal according to the second embodiment. Compared with 300a, the mounting situation in the ring-type wearable terminal can be relaxed.

Modification 2 of Embodiment 2
Then, the composite antenna of the induction | guidance | derivation type read / write apparatus concerning the modification 2 of Embodiment 2 of this invention is demonstrated. The second modification of the second embodiment of the present invention is an example in which a linear loop antenna is formed with a pattern by FPC. The overall configuration of the short-range wireless communication system is the same as the configuration shown in FIG. The derivative read / write device 100b of the second modification of the second embodiment includes a composite antenna 110b instead of the composite antenna 110a of FIG.

  First, the configuration of the composite antenna 110b of the inductive read / write device 100b according to the second modification of the second embodiment of the present invention will be described with reference to FIG. The composite antenna 110b includes an FPC loop antenna 113 and a pattern loop antenna 112. The FPC loop antenna 113 and the pattern loop antenna 112 are connected in series. Since the pattern loop antenna 112 has the same configuration as described above, description thereof is omitted.

  The FPC loop antenna 113 is an antenna in which a linear loop antenna is formed in a pattern by FPC. Similarly to the linear loop antenna 111, the FPC loop antenna 113 can be arranged along the shape of the casing within the casing of the terminal to be mounted.

  Next, the configuration of a wearable terminal in which the composite antenna 110b of the inductive read / write device 100b is mounted will be described using FIG. In addition, in FIG. 13, the example using the ring-type wearable terminal 300c as a wearable terminal is demonstrated. The material of the ring type wearable terminal 300c is, for example, ABS resin.

  Ring-type wearable terminal 300c includes FPC loop antenna 113, pattern loop antenna 112, and NFC IC 120. FPC loop antenna 113 and pattern loop antenna 112 in ring-type wearable terminal 300c are connected in series. . Moreover, in the ring-type wearable terminal 300c, as shown in FIG. 4, the linear loop antenna 111 and the pattern loop antenna 112 are configured such that the antennas are wound in the same direction. Further, the FPC loop antenna 113 is arranged along the ring shape of the casing in the casing of the ring-type wearable terminal 300c. That is, the FPC loop antenna 113 is similarly arranged in the same shape as the linear loop antenna 111 of the second embodiment of the present invention.

  As described above, in the composite antenna 110b of the inductive read / write device 100b according to the second modification of the second embodiment of the present invention, the FPC loop antenna 113 is used in place of the linear loop antenna 111 of the second embodiment. It is said. This configuration can have the same effect as that of the second embodiment.

  In the above description of the second embodiment and the modification, an example in which a ring-type wearable terminal is used as a ring-shaped wearable terminal has been described. However, a ring-shaped wearable terminal is a ring-type wearable terminal. Not exclusively. For example, the same effect can be obtained when a bracelet type wearable terminal is used as a ring-shaped wearable terminal.

Embodiment 3
Next, the composite antenna of the induction type read / write device according to the third exemplary embodiment of the present invention will be described. The third embodiment of the present invention is an example in which a wire antenna is used instead of the linear loop antenna of the second embodiment. The overall configuration of the short-range wireless communication system is the same as the configuration shown in FIG. The derivative read / write device 100c of the third embodiment includes a composite antenna 110c instead of the composite antenna 110a of FIG.

  First, the configuration of the composite antenna 110c of the inductive read / write device 100c according to the third embodiment of the present invention will be described with reference to FIG. The composite antenna 110c includes a wire antenna 114 and a pattern loop antenna 112. Further, the electric wire antenna 114 and the pattern loop antenna 112 are connected in series. Since the pattern loop antenna 112 has the same configuration as described above, description thereof is omitted.

  The electric wire antenna 114 is an antenna formed by winding an electric wire around a magnetic core. FIG. 15 shows a configuration diagram of the wire antenna 114. In the example of FIG. 15, a rectangular parallelepiped magnetic core is shown, but the shape of the magnetic core may not be a rectangular parallelepiped, for example, a cylindrical shape. In addition, the kind of magnetic body used for a magnetic body core is a ferrite, for example. Also, the wire antenna 114 can have a smaller mounting area than the pattern loop antenna 112 that forms a loop on a plane due to the structure of the antenna. In the composite antenna 110c, the wire antenna 114 and the pattern loop antenna 112 are configured so that the antennas are wound in the same direction as shown in FIG.

  As described above, in the composite antenna 110c of the inductive read / write device 100c of FIG. 14 according to the third embodiment of the present invention, the wire antenna 114 and the pattern loop antenna 112 are configured to be connected in series. Further, the wire antenna 114 can have a smaller mounting area than the pattern loop antenna 112, and is suitable for mounting under the mounting condition of a wearable terminal that is smaller and thinner than a mobile phone. In addition, with the configuration in which the electric wire antenna 114 and the pattern loop antenna 112 are connected in series, it is possible to maintain good communication characteristics by the electric wire antenna 114 compensating for the communication characteristic deterioration due to the downsizing of the pattern loop antenna 112. Therefore, in the composite antenna 110c of the inductive read / write device 100c of FIG. 14 according to the third embodiment, an inductive type that can be reduced in shape and size suitable for a wearable terminal while maintaining good communication characteristics with respect to the reader / writer. A composite antenna for a read / write device can be realized.

Modification of Embodiment 3 Next, the configuration of the composite antenna 110d of the inductive read / write device 100d according to a modification of Embodiment 3 of the present invention will be described with reference to FIG. The modification of Embodiment 3 of the present invention is an example using two wire antennas.

  The composite antenna 110d includes a wire antenna 114, a pattern loop antenna 112, and a wire antenna 115. That is, two wire antennas and one pattern loop antenna 112 are provided. In the composite antenna 110d, the wire antenna 114, the pattern loop antenna 112, and the wire antenna 115 are connected in series in this order. Since the pattern loop antenna 112 has the same configuration as described above, description thereof is omitted. Similarly to the wire antenna 114, the wire antenna 115 is an antenna formed by winding a wire around a magnetic core. Further, in the composite antenna 110d, as shown in FIG. 4, the wire antenna 114, the pattern loop antenna 112, and the wire antenna 115 are configured so that the antennas are wound in the same direction.

  Next, the configuration of a wearable terminal in which the composite antenna 110d of the inductive read / write device 100d is mounted will be described using FIG. In addition, in FIG. 17, the example using the ring type wearable terminal 300d as a wearable terminal is demonstrated. The material of the ring type wearable terminal 300d is, for example, ABS resin.

  The ring-type wearable terminal 300d includes a wire antenna 114, a pattern loop antenna 112, a wire antenna 115, and an NFC IC 120. The wire antennas 114 and 115 have a smaller mounting area than the pattern loop antenna 112. For this reason, it is possible to mount two even under the mounting condition of a ring-type wearable terminal that is smaller and thinner than a mobile phone. Therefore, even if only one wire antenna is provided and communication characteristics comparable to those of the linear loop antenna 111 cannot be ensured, the communication properties can be improved by providing two wire antennas.

  In the ring-type wearable terminal 300d of FIG. 17A, the wire antennas 114 and 115 are arranged so that the wires of the wire antennas 114 and 115 are substantially parallel to the pattern loop antenna 112. With such an arrangement, when the ring-type wearable terminal 300d is held over the reader / writer 200 so that the pattern loop antenna 112 is on the bottom surface, the pattern loop antenna 112 and the antenna of the reader / writer 200 are substantially parallel. Magnetic fluxes are effectively linked between the loop antenna 112 and the reader / writer 200 antenna. Further, since the magnetic flux is linked between the wire antennas 114 and 115 and the antenna of the reader / writer 200, the ring-type wearable terminal 300d can improve the communication characteristics with respect to the reader / writer 200 by the composite antenna 110d. .

  In the ring-type wearable terminal 300d of FIG. 17B, the wire antennas 114 and 115 are arranged so that the wires of the wire antennas 114 and 115 are at an angle of about 90 ° with respect to the pattern loop antenna 112. Yes. With such an arrangement, even when the pattern loop antenna 112 and the antenna of the reader / writer 200 are held so as not to be substantially parallel, the magnetic flux between the wire antennas 114 and 115 and the antenna of the reader / writer 200 can be reduced. Therefore, the ring-type wearable terminal 300d can make the communication characteristics with respect to the reader / writer 200 good by the composite antenna 110d.

  Also, one of the wire antennas 114 and 115 may be disposed as the wire antenna shown in FIG. 17A, and the other may be disposed as the wire antenna in FIG. That is, one electric wire antenna is arranged so that the electric wire of the electric wire antenna is substantially parallel to the pattern loop antenna 112, and the electric wire of the electric wire antenna is approximately 90 ° with respect to the pattern loop antenna 112. You may arrange | position so that it may become this angle.

  As described above, in the composite antenna 110d of the inductive read / write device 100d according to the modification of the third embodiment of the present invention, under the mounting condition of the ring-type wearable terminal that is smaller and thinner than the mobile phone, 2 Two wire antennas 114 and 115 can be implemented. In addition, with the configuration in which the wire antenna 114, the pattern loop antenna 112, and the wire antenna 115 are connected in series in this order, the wire antennas 114 and 115 maintain good communication characteristics by compensating for the deterioration in communication characteristics due to the downsizing of the pattern loop antenna 112. It is possible.

  Also, when the wire antenna is arranged so that the electric wire of the electric wire antenna is substantially parallel to the pattern loop antenna 112, the pattern loop antenna 112 and the antenna of the reader / writer 200 are held substantially parallel to each other. The communication characteristics for the reader / writer 200 can be made good.

  Also, by arranging the wire antenna so that the wire of the wire antenna is at an angle of approximately 90 ° with respect to the pattern loop antenna 112, the pattern loop antenna 112 and the antenna of the reader / writer 200 are not substantially parallel. Even in the case of being held over, the communication characteristics for the reader / writer 200 can be improved by the composite antenna 110d.

  Therefore, in the composite antenna 110d of the inductive read / write device 100d according to the modification of the third embodiment, the inductive type that can be reduced in shape and size suitable for a wearable terminal while maintaining good communication characteristics with respect to the reader / writer. A composite antenna for a read / write device can be realized.

  In the above description of the third embodiment and the modification example of the third embodiment, the example in which the ring-type wearable terminal is used as the wearable terminal has been described. However, the wearable terminal is not limited to the ring-type wearable terminal. For example, the same effect can be obtained when a bracelet type wearable terminal is used as the wearable terminal.

  In the modification of the third embodiment, it has been described that the composite antenna 110d uses two electric wire antennas 114 and 115, but the number of electric wire antennas may be three or more. For example, it is configured to use four wire antennas, two wire antennas are arranged as shown in FIG. 17A, and the remaining two wire antennas are like the wire antennas shown in FIG. You may arrange in.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, the wearable terminal may include various components such as a sensor, and may include a battery for various components. An example of mounting the battery 130 on the ring-type wearable terminal 300a is shown in FIG.

  In the above description, an example in which a ring-shaped wearable terminal is used as a wearable terminal has been described. However, the present invention can also be applied to a wearable terminal that does not have a ring shape.

  Further, in the above description, the magnetic sheet is used for the pattern loop antenna. However, when the performance can be ensured without the magnetic sheet, the magnetic sheet may be omitted.

100a, 100b, 100c, 100d Inductive read / write devices 110a, 110b, 110c, 110d Composite antenna 111 Linear loop antenna 112 Pattern loop antenna 113 FPC loop antenna 114, 115 Electric wire antenna 120 NFC IC
130 Battery 200 Reader / Writer 300a, 300b, 300c, 300d Ring-type wearable terminal

Claims (8)

A linear loop antenna that is a linear loop antenna;
A pattern loop antenna formed by a pattern of FPC (Flexible printed circuits) on a magnetic sheet,
The linear loop antenna and the pattern loop antenna are connected in series ,
The linear loop antenna is arranged along the shape of the casing in a ring-shaped casing.
The linear loop antenna with respect to the pattern loop antenna, that is arranged to be a predetermined angle,
Compound antenna for inductive read / write device. The inductive read / write device composite antenna according to claim 1 , wherein the linear loop antenna is formed in a pattern by FPC. A linear loop antenna that is a linear loop antenna;
A pattern loop antenna formed by a pattern of FPC (Flexible printed circuits) on a magnetic sheet,
The linear loop antenna and the pattern loop antenna are connected in series,
The linear loop antenna is formed using a metal frame on the surface of a ring-shaped housing ,
The linear loop antenna with respect to the pattern loop antenna, that is arranged to be a predetermined angle,
Composite antenna of induction Shirubeshiki reading and writing apparatus. A wire antenna formed by winding a wire around a magnetic core;
A pattern loop antenna formed by a pattern of FPC (Flexible printed circuits) on a magnetic sheet,
The wire antenna and the pattern loop antenna are connected in series ,
The wire antenna and the pattern loop antenna are arranged in a ring-shaped housing,
The wire of the wire antenna, to the pattern loop antenna, that are arranged to be substantially parallel,
Compound antenna for inductive read / write device. The wire antenna includes a first wire antenna and a second wire antenna,
The composite antenna of the induction type read / write device according to claim 4 , wherein the first electric wire antenna, the pattern loop antenna, and the second electric wire antenna are connected in series in this order. A linear loop antenna that is a linear loop antenna;
A pattern loop antenna formed by a pattern of FPC (Flexible printed circuits) on a magnetic sheet;
A ring-shaped housing, and
The linear loop antenna and the pattern loop antenna are connected in series ,
The linear loop antenna is disposed along the shape of the casing in the casing of the annular shape,
The linear loop antenna with respect to the pattern loop antenna, that is arranged to be a predetermined angle,
Wearable terminal. A linear loop antenna that is a linear loop antenna;
A pattern loop antenna formed by a pattern of FPC (Flexible printed circuits) on a magnetic sheet;
A ring-shaped housing, and
The linear loop antenna and the pattern loop antenna are connected in series,
The linear loop antenna is formed using a metal frame on the surface of the housing ,
The linear loop antenna with respect to the pattern loop antenna, that is arranged to be a predetermined angle,
C Earaburu terminal. A wire antenna formed by winding a wire around a magnetic core;
A pattern loop antenna formed by a pattern of FPC (Flexible printed circuits) on a magnetic sheet,
The wire antenna and the pattern loop antenna are connected in series ,
The wire antenna and the pattern loop antenna are arranged in a ring-shaped housing,
The wire of the wire antenna, to the pattern loop antenna, that are arranged to be substantially parallel,
Wearable terminal.

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