CN104025381A - Antenna device and portable terminal - Google Patents
Antenna device and portable terminal Download PDFInfo
- Publication number
- CN104025381A CN104025381A CN201280053327.4A CN201280053327A CN104025381A CN 104025381 A CN104025381 A CN 104025381A CN 201280053327 A CN201280053327 A CN 201280053327A CN 104025381 A CN104025381 A CN 104025381A
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- Prior art keywords
- antenna assembly
- loop coil
- limit portion
- toroidal
- external equipment
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- 238000002474 experimental method Methods 0.000 description 11
- 238000004088 simulation Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
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- 230000004907 flux Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
- H04B5/26—Inductive coupling using coils
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The invention provides an antenna device that, without expanding the mounting space of the antenna device, suppresses a decrease in communication performance arising when the facing angle to an external apparatus has increased; and a portable terminal. The antenna device (10) is provided with a magnetic sheet (15) and a printed substrate (11) to which loop coils have been formed. A first loop coil is formed at one surface of the printed substrate (11), and a second loop coil is formed at the other surface. The disposition is such that when projecting the first loop coil and the second loop coil into the same plane, a first side is mutually overlapping and a second side is not mutually overlapping, and the region of disposition in a manner so that the second side is not mutually overlapping is covered by the magnetic sheet (15).
Description
Technical field
The present invention relates to antenna assembly and mobile terminal that RFID (radio frequency identification: radio-frequency (RF) identification) system etc. is used.
Background technology
Rfid system is the technology of carrying out radio communication via electromagnetic field signal with external equipment, is widely used in the automatic ticket checker of railway, the field such as safety system, electronic-monetary system of turnover building.
Now, the mobile terminal such as mobile phone, plate PC with RFID function is constantly universal, use as substituting of IC-card, but the mobile terminal with RFID function is different from unifunctional IC-card, function relates to many-side, thereby terminal inner electronic unit is intensive and the installing space of the antenna assembly that uses in order to carry out radio communication with external equipment is extremely restricted.
Therefore, the tendency of the antenna assembly that is equipped on mobile terminal in diminishing with IC-card phase specific area, with in the communicating by letter of external equipment, often have problem and produce.Particularly in the case of with the relative angle of external equipment become large, communication performance obviously declines.Therefore, attempt being suppressed at relative angle and become the decline of the communication performance producing in large situation.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2004-266811 communique
Patent documentation 2: TOHKEMY 2002-208814 communique
Summary of the invention
Invent technical problem to be solved
For example, in the technology of recording at patent documentation 1, antenna assembly is bending and along the inwall side of mobile terminal inside, antenna assembly is set to the direction that will communicate by letter, thus be suppressed at the decline that becomes the communication performance producing in large situation with the relative angle of external equipment.
In the technology of recording at patent documentation 2, by magnetic flakes is extended and configured to the direction that will communicate by letter, thereby be suppressed at the angle relative with external equipment and become the decline of the communication performance producing in large situation.
But, in the technology of recording about patent documentation 1, be necessary that bent antenna device arranges, thereby exist the installing space of antenna assembly to become large problem.In addition, the problems such as damaged possibility uprises compared with the situation that place is restricted and arrange with plane earth are set in addition.
In addition, in the technology of recording at patent documentation 2, be necessary magnetic flakes to extend to the outside of printed base plate, thereby exist the area of antenna assembly to become large and installing space to become large problem.
The present invention is because such technical problem, and its object is to provide and does not expand the installing space of antenna assembly and be suppressed at the antenna assembly and the mobile terminal that become the decline of the communication performance producing in large situation with the relative angle of external equipment.
The means of technical solution problem
Antenna assembly involved in the present invention in order to achieve the above object, it the 1st is characterised in that: at a face of printed base plate, the 1st loop coil is set respectively, at another face, the 2nd loop coil is set, connect described 2 loop coils with the through hole that is arranged on described printed base plate, the 2nd mutual nonoverlapping mode of limit portion overlapped described the 1st loop coil and described the 2nd loop coil the 1st limit portion when projecting in same plane and that be positioned at the position symmetrical with described the 1st limit portion is configured, and magnetic flakes is set as follows, cover the region configuring in described the 2nd mutual nonoverlapping mode of limit portion.
According to the present invention of above-mentioned feature, by the toroidal configuration that the 1st limit portion configuring with the 1st loop coil and the overlapping mode of the 2nd loop coil and the 2nd loop coil configuring in nonoverlapping mode is set and changes two long legs, can give the bias of Distribution of Magnetic Field.Have, magnetic flakes is just necessary to cover the 2nd limit portion again, the unnecessary outside that extends to printed base plate, thereby the area of antenna assembly can not become large.In addition, in order to handle Distribution of Magnetic Field, unnecessary arrange to the direction bent antenna device that will communicate by letter, also do not expand the installing space of antenna assembly., can not expand the installing space of antenna assembly and be suppressed at the decline that becomes the communication performance producing in large situation with the relative angle of external equipment.
In addition, antenna assembly involved in the present invention, it the 2nd is characterised in that: described the 1st limit portion can't help described magnetic flakes and covers.
According to the present invention of above-mentioned feature, by the 2nd limit portion being covered by magnetic flakes and the 1st limit portion being uncovered shape or the configuration that changes the magnetic flakes of two long legs are set, can further give the bias of Distribution of Magnetic Field, thereby can not expand the installing space of antenna assembly and further be suppressed at the decline that becomes the communication performance producing in large situation with the relative angle of external equipment.
In addition, antenna assembly involved in the present invention, it the 3rd is characterised in that: in the region configuring in described the 2nd nonoverlapping mode of limit portion, the 1st toroidal Wiring pattern intersects at least on one point with the 2nd toroidal Wiring pattern.
According to the present invention of above-mentioned feature, by in the 2nd limit portion, the 1st toroidal Wiring pattern and the 2nd toroidal Wiring pattern a bit intersecting in regulation, thereby nearby produce 3 kinds of Distribution of Magnetic Field and different Distribution of Magnetic Field interactions in the 2nd limit portion, can further give thus the bias of Distribution of Magnetic Field, thereby can not expand the installing space of antenna assembly and further be suppressed at the decline that becomes the communication performance producing in large situation with the relative angle of external equipment.
In addition, antenna assembly involved in the present invention, it the 4th is characterised in that: described the 1st loop coil is connected in identical reference potential with described the 2nd loop coil.
According to the present invention of above-mentioned feature, if the 1st loop coil is connected in identical reference potential with the 2nd loop coil, the 1st loop coil and the 2nd loop coil are split on circuit, impedance variation when load-modulate becomes large, together the difference of counter field becomes large therewith, thereby the S/N of load modulation signal ratio is improved, as a result of, the detectability of external equipment uprises, and communication performance improves.
In addition, antenna assembly involved in the present invention, it the 5th is characterised in that: single or multiple far-field communication antenna configurations are being formed with described the 1st loop coil and the 2nd toroidal peristome.
According to the present invention of above-mentioned feature, can maintain same as before suppressing antenna device in the case of becoming the feature of the decline of the communication performance producing large with the relative angle of external equipment, do not increase the size of antenna assembly, and make antenna assembly multiband.By being formed with the 1st loop coil and the different far-field communication antenna of the 2nd toroidal peristome configuration communication frequency band in this wise, thereby the size that does not increase antenna assembly can be provided, be suppressed at the relative angle of external equipment and become the decline of communication performance and the antenna assembly of multiband that in large situation, produce.
In addition, antenna assembly involved in the present invention, it the 6th is characterised in that: be mounted in the basket of mobile terminal.
According to the present invention of above-mentioned feature, for example, in the time of the automatic ticket checker by railway or as the verifying speed of the pursuits such as electronic money and read write line under such multiple scene, even if can not have in the situation of relative angle between read write line and mobile terminal suddenly, also can communicate well.
The effect of invention
According to the present invention, can provide and not expand the installing space of antenna assembly and be suppressed at the antenna assembly and the mobile terminal that become the decline of the communication performance producing in large situation with the relative angle of external equipment.
Brief description of the drawings
Figure 1A is the plane graph of seeing the related antenna assembly 10 of the 1st execution mode from 1st toroidal side 11A.
Figure 1B is the plane graph of seeing the related antenna assembly 10 of the 1st execution mode from 2nd toroidal side 11B.
Antenna assembly 10 related the 1st execution mode is resolved into each inscape and open cube display side by side vertically by Fig. 1 C.
Fig. 2 A is the plane graph that sees through the related antenna assembly 10 of the 1st execution mode from 1st toroidal side 11A.
Fig. 2 B is A-A ' the line sectional view of Fig. 2 A.
Fig. 2 C be toroidal the 1st 11L of limit portion nearby with the schematic diagram of the 2nd 11R of limit portion Distribution of Magnetic Field H nearby.
Fig. 2 D is at the plane graph that the 1st 11L of limit portion and the 2nd 11R of limit portion are seen from 1st toroidal side 11A as toroidal short brink in the situation that.
Fig. 2 E is at the plane graph of the 2nd loop coil 13 for seeing from 1st toroidal side 11A in foursquare situation.
Fig. 3 A is the plane graph that 1st toroidal the side 11A from being provided with magnetic flakes sees through related convolution shape (helical) coil 20 of manner of comparison 1.
Fig. 3 B is A-A ' the line sectional view of Fig. 3 A.
Fig. 3 C is the plane graph that 1st toroidal the side 11A from being provided with magnetic flakes sees through the related helical form of manner of comparison 1 (spiral) coil 30.
Fig. 3 D is A-A ' the line sectional view of Fig. 3 C.
Fig. 4 A is the schematic diagram of the Distribution of Magnetic Field H of antenna assembly 10.
Fig. 4 B is the schematic diagram of the Distribution of Magnetic Field H of convolution shape coil 20.
Fig. 4 C is the schematic diagram of the Distribution of Magnetic Field H of spiral coil 30.
Fig. 5 A is the plane graph that sees through the related antenna assembly 10A of the 2nd execution mode from 1st toroidal side 11A.
Fig. 5 B is A-A ' the line sectional view of Fig. 5 A.
Fig. 6 is the schematic diagram of the Distribution of Magnetic Field H of antenna assembly 10A.
Fig. 7 A is the plane graph that sees through the related antenna assembly 10B of the 3rd execution mode from 1st toroidal side 11A.
Fig. 7 B is B-B ' the line sectional view of Fig. 7 A and the schematic diagram of the Distribution of Magnetic Field H of the 1st 11L of limit portion nearby and near the 2nd 11R of limit portion.
Fig. 7 C is A-A ' the line sectional view of Fig. 7 A and the schematic diagram of the Distribution of Magnetic Field H of the 1st 11L of limit portion nearby and near the 2nd 11R of limit portion.
Fig. 7 D is C-C ' the line sectional view of Fig. 7 A and the schematic diagram of the Distribution of Magnetic Field H of the 1st 11L of limit portion nearby and near the 2nd 11R of limit portion.
Fig. 8 represents that the transmission of the rfid system of the antenna assembly 10C related with the 4th execution mode receives an example of the circuit structure diagram being connected of signal circuit.
Fig. 9 is the plane graph that sees through the related antenna assembly 10D of the 5th execution mode from 1st toroidal side 11A.
Figure 10 A is the plane graph of seeing the related antenna assembly of embodiment 1 100 from 1st toroidal side 110A.
Figure 10 B is the plane graph of seeing the related antenna assembly of embodiment 1 100 from 2nd toroidal side 110B.
Figure 11 is the plane graph that sees through the related antenna assembly of embodiment 1 100 from 1st toroidal side 110A.
Figure 12 A is the plane graph that 1st toroidal the side 10A from being provided with magnetic flakes sees through the related convolution shape coil 200 of comparative example 1.
Figure 12 B is the plane graph that 1st toroidal the side 110A from being provided with magnetic flakes sees through the related spiral coil of comparative example 1 300.
Figure 13 A is the schematic diagram that represents the structure of the simulation of the effect for confirming the related antenna assembly of embodiment 1 100.
Figure 13 B is A-A ' the line sectional view of Figure 13 A.
Figure 13 C represents the situation to tilt with the relative angle θ of external equipment 400 by the antenna assembly of Figure 13 B 100,200,300.
Figure 14 be with the relative angle θ of external equipment 400 under represent the chart of the transmission characteristic of the electric power that the result of the simulation of the effect for confirming the related antenna assembly of embodiment 1 100 obtains.
Figure 15 be with the relative angle θ of external equipment 400 under represent the chart of the maximum communication distance that the experimental result of the effect for confirming the related antenna assembly of embodiment 1 100 obtains.
Figure 16 A is the schematic diagram that represents the structure of the simulation of the effect for confirming the related antenna assembly of embodiment 2 100.
Figure 16 B is A-A ' the line sectional view of Figure 15 A.
Figure 16 C represents the situation to tilt with the relative angle θ of external equipment 400 by the antenna assembly of Figure 15 B 100,200,300 and metallic plate 500.
Figure 17 be with the relative angle θ of external equipment 400 under represent the chart of the transmission characteristic of the obtained electric power of the analog result of the effect for confirming the related antenna assembly of embodiment 2 100.
Figure 18 be with the relative angle θ of external equipment 400 under represent the chart of the maximum communication distance that the result of the experiment of the effect for confirming the related antenna assembly of embodiment 2 100 obtains.
Figure 19 is the plane graph that sees through the related antenna assembly 100A of embodiment 3 from 1st toroidal side 110A.
Figure 20 A is an example that represents rfid system and the circuit structure diagram being connected transmission reception signal circuit of antenna assembly 100.
Figure 20 B is an example that represents rfid system and the circuit structure diagram being connected transmission reception signal circuit of antenna assembly 100A.
Figure 21 be with the relative angle θ of external equipment 400 under represent the chart of the maximum communication distance that the result of the experiment of the effect for confirming the related antenna assembly 100A of embodiment 3 obtains.
Figure 22 is the plane graph that sees through the related antenna assembly 100D of embodiment 4 from 1st toroidal side 110A.
The explanation of symbol:
10,10A, 10B, 10C, 10D, 20,30,100,100A, 100D, 200,300 ... antenna assembly
11,110 ... printed base plate
11A, 110A ... 1st toroidal side
11B, 110B ... 2nd toroidal side
11L, 110L ... the 1st limit portion
11R, 110R ... the 2nd limit portion
12,120 ... the 1st loop coil
13,130 ... the 2nd loop coil
14,140,141,142 ... through hole
15,150 ... magnetic flakes
161,162,163,171,172,173 ... pad electrode
400 ... external equipment
500 ... metallic plate
601,602 ... far-field communication antenna
Embodiment
Below, be elaborated with regard to the preferred embodiment of the present invention on one side with reference to accompanying drawing on one side.
(the 1st execution mode)
Figure 1A is the plane graph of seeing the related antenna assembly 10 of the 1st execution mode from 1st toroidal side 11A.As shown in the figure, be provided with magnetic flakes 15 in 1st toroidal side of printed base plate 11.In addition, Figure 1B is the plane graph of seeing antenna assembly 10 from 2nd toroidal side 11B.In addition, Fig. 1 C resolves into each inscape by antenna assembly 10 and along vertical direction open cube display side by side.
As shown in Figure 1 C, antenna assembly 10 possesses the through hole 14 of the 1st loop coil 12 of the roughly ring-type of a face that is formed on printed base plate, the 2nd loop coil 13 that is formed on the roughly ring-type of another face, perforation printed base plate 11 and is arranged on the magnetic flakes 15 of 1st toroidal side of printed base plate 11.Have, the 1st loop coil 12 is connected by through hole 14 with the 2nd loop coil 13 again.
Printed base plate 11 is made up of insulating properties materials such as glass epoxide, polyimides, polyethylene, aramid fiber, paper phenol, paper epoxy, polyester, potteries.
The 1st loop coil 12 and the 2nd loop coil 13, through hole 14 are made up of conductor materials such as aluminium, copper, silver, nickel, gold.
Magnetic flakes 15 has the laminar article that can stand thump that are rich in flexibility that are made up of magnetic material and resin, the ferrite cemented body with high magnetic permeability is processed into laminal article etc.
Fig. 2 A is the plane graph that sees through antenna assembly 10 from 1st toroidal side 11A.In addition, Fig. 2 B is A-A ' the line sectional view of Fig. 2 A.In addition, Fig. 2 C is the schematic diagram of the Distribution of Magnetic Field H of the 1st 11L of limit portion nearby and near the 2nd 11R of limit portion.
As shown in Figure 2 A, antenna assembly 10 possesses the region (the 2nd 11R of limit portion) that the region (the 1st 11L of limit portion) that configures with the 1st loop coil 12 and the 2nd loop coil 13 mode overlapped via printed base plate 11 and mutual nonoverlapping mode configure.
In addition, as shown in Figure 2 C, the 1st 11L of limit portion configures with the 1st loop coil 12 and the 2nd loop coil 13 mode overlapped via enough thin printed base plate 11, thereby the loop coil interval of vertical direction only has the thickness part of printed base plate 11, and can magnetic screen between the 1st loop coil 12 and the 2nd loop coil 13, magnetic flux MF can not pass through substantially.,, at the 1st 11L of limit portion, the 1st loop coil 12 and the 2nd loop coil 13 form loop coil effectively, and magnetic field is roughly distributed to concentric circles.
In addition, if the 1st loop coil 12 and the 2nd loop coil 13 configure in mutual nonoverlapping mode as the 2nd 11R of limit portion, between the 1st loop coil 12 and the 2nd loop coil 13, magnetic screen disappears, and magnetic flux MF can fully be passed through.Now, the 1st loop coil 12 is connected by through hole 14 with the 2nd loop coil 13, therefore, at the 2nd 11R of limit portion, the electric current of the 1st loop coil 12 and the 2nd loop coil 13 flows in the same direction, thereby the magnetic flux MF producing respectively from the 1st loop coil 12 and the 2nd loop coil 13 is by the opposite direction between the 1st loop coil 12 and the 2nd loop coil 13, weakened field.As a result of, Distribution of Magnetic Field H is not concentric circles but is roughly ellipticity distribution.
Have, the thickness of printed base plate 11 is preferably 10 μ m～100 μ m again, more preferably 25 μ m～50 μ m.
The width g0 that staggers of the 1st loop coil 12 and the 2nd loop coil 13 is preferably 0.1mm～3.0mm, more preferably 0.5mm～1.5mm.That is, if the width g0 that staggers is excessive, reduce by the magnetic flux of loop coil entirety, thereby preferred above-mentioned scope.
Fig. 2 D is at the plane graph that the 1st 11L of limit portion and the 2nd 11R of limit portion are seen from 1st toroidal side 11A as toroidal short brink in the situation that.
Fig. 2 E is at the plane graph of the 2nd loop coil 13 for seeing from 1st toroidal side 11A in foursquare situation.
Being not limited to rectangle by loop coil 12 that roughly ring-type forms and the shape of loop coil 13 like this, can be also square, rectangle.In addition, can be using the 1st limit portion as toroidal short brink or as long side, can as which side.In addition, the 1st limit portion, the 2nd limit portion are not limited to straight-line pattern, for example, can be also to wriggle to wait other shape patterns.
(manner of comparison 1)
Mode 1 as a comparison, at Fig. 3 A shape (helical) coil 20 that represents to circle round, represents it is helical form (spiral) coil 30 of the most general antenna assembly at Fig. 3 C.
Fig. 3 A is the plane graph that 1st toroidal the side 11A from being provided with magnetic flakes sees through convolution shape coil 20, and Fig. 3 B is A-A ' the line sectional view of Fig. 3 A.In addition, Fig. 3 C is the plane graph that 1st toroidal the side 11A from being provided with magnetic flakes sees through spiral coil 30, and Fig. 3 D is A-A ' the line sectional view of Fig. 3 C.
Convolution shape coil 20 shown in Fig. 3 A and Fig. 3 B, in order to confirm the effect of antenna assembly 10, even and if at the region configuring with the 1st loop coil 12 and the mutual nonoverlapping mode of the 2nd loop coil 13 (the 2nd 11R of limit portion), also the 1st loop coil 12 and the 2nd loop coil 13 are configured in overlapping mode.
Spiral coil 30 shown in Fig. 3 C and Fig. 3 D only forms 2 circle loop coils 12 at a face of printed base plate 11.
Fig. 4 A is the schematic diagram of the Distribution of Magnetic Field H of antenna assembly 10.In addition, Fig. 4 B is the schematic diagram of the Distribution of Magnetic Field H of convolution shape coil 20.In addition, Fig. 4 C is the schematic diagram of the Distribution of Magnetic Field H of spiral coil 30.
Convolution shape coil 20 and spiral coil 30 that manner of comparison 1 shown in Fig. 4 B and Fig. 4 C is related, magnetic field roughly distributes to concentric circles with respect to the central shaft CL of antenna assembly.On the other hand, the related antenna assembly 10 of the 1st execution mode shown in Fig. 4 A is nearby different with the Distribution of Magnetic Field H that nearby produces of the 2nd 11R of limit portion from the 1st 11L of limit portion, thereby with respect to the central shaft CL of antenna assembly, in Distribution of Magnetic Field H generation bias.As a result of, the communication performance in the situation that antenna assembly tilts improves., can suppress to become with the relative angle of external equipment the decline of the communication performance producing in large situation.
(the 2nd execution mode)
Fig. 5 A is the plane graph that sees through the related antenna assembly 10A of the 2nd execution mode from 1st toroidal side 11A.In addition, Fig. 5 B is A-A ' the line sectional view of Fig. 5 A.In addition, Fig. 6 is the schematic diagram of Distribution of Magnetic Field H.
The difference of the related antenna assembly 10 of the 1st execution mode shown in antenna assembly 10A and Fig. 2 A that the 2nd execution mode shown in Fig. 5 A is related is, at the 1st 11L of limit portion, the 1st loop coil 12 and the 2nd loop coil 13 be can't help magnetic flakes 15 and covered.
By configuring can't help the mode that magnetic flakes 15 covers the 1st loop coil 12 and the 2nd loop coil 13 at the 1st 11L of limit portion like this, thereby magnetic field produces and is involved in to the direction of arrow shown in Fig. 6.As a result of, the Distribution of Magnetic Field H of antenna assembly 10A is further generation bias compared with antenna assembly 10, can further suppress to become with the relative angle of external equipment the decline of the communication performance producing in large situation.
Have again, can't help the region that magnetic flakes 15 covers to be preferably the 1st loop coil 12 and the incomplete capped degree of the 2nd loop coil 13 on the 1st 11L of limit portion, preferably from the inner side of the 1st 11L of limit portion till 0mm～1mm left and right be uncovered.That is, the region that magnetic flakes covers if can't help is excessive, is equipped in the situation that mobile terminal uses, and the dysgenic ability that relaxes the vortex flow producing from back metal declines, thereby preferred above-mentioned scope.
(the 3rd execution mode)
Fig. 7 A is the plane graph that sees through the related antenna assembly 10B of the 3rd execution mode from 1st toroidal side 11A.In addition, Fig. 7 B is B-B ' the line sectional view of Fig. 7 A and the schematic diagram of the Distribution of Magnetic Field H of the 1st 11L of limit portion nearby and near the 2nd 11R of limit portion, Fig. 7 C be A-A ' the line sectional view of Fig. 7 A and the 1st 11L of limit portion nearby and the schematic diagram of the 2nd 11R of limit portion Distribution of Magnetic Field H nearby, Fig. 7 D be C-C ' the line sectional view of Fig. 7 A and the 1st 11L of limit portion nearby and the schematic diagram of the 2nd 11R of limit portion Distribution of Magnetic Field H nearby.
The difference of the related antenna assembly 10A of the 2nd execution mode shown in antenna assembly 10B and Fig. 5 A that the 3rd execution mode shown in Fig. 7 A is related is, in the multiple regions (the 2nd 11R of limit portion) that configure with the 1st loop coil 12 and the overlapped mode of the 2nd loop coil 13, a bit the intersecting in regulation at the Wiring pattern of this interregional the 1st loop coil 12 and the Wiring pattern of the 2nd loop coil 13.
By making the Wiring pattern of the 1st loop coil 12 and the Wiring pattern of the 2nd loop coil 13 a bit intersecting in regulation at the 2nd 11R of limit portion like this, thereby produce three kinds of such Distribution of Magnetic Field H of Fig. 7 B～Fig. 7 D, different Distribution of Magnetic Field H interacts and weakened field, thereby further produces the bias of Distribution of Magnetic Field H., can further be suppressed at the decline that becomes the communication performance producing in large situation with the relative angle of external equipment.
Have again, the Wiring pattern of the 1st loop coil 12 and the position that the Wiring pattern of the 2nd loop coil 13 intersects are preferably near the central authorities of the 2nd 11R of limit portion, preferably only intersect on one point.,, if intersected more than 2 o'clock and produce multiple different Distribution of Magnetic Field H, a little less than magnetic field became, thereby preferably intersect on one point.
(the 4th execution mode)
Fig. 8 represents that the transmission of the rfid system of the antenna assembly 10C related with the 4th execution mode receives an example of the circuit structure diagram being connected of signal circuit.
As shown in Figure 8, the transmission of rfid system receives signal circuit and is made up of RF IC (comprising load), EMC filter, match circuit, and has a pair of holding wire TR1, TR2.The 1st loop coil 12 of antenna assembly 10C is connected with holding wire TR1, and the 2nd loop coil 13 is connected with holding wire TR2.In addition, through hole 14 parts are connected in and transmit the reference potential (ground connection) that receives signal circuit.
If be connected in identical reference potential by connecting the 1st loop coil 12 with through hole 14 parts of the 2nd loop coil 13 like this, the 1st loop coil 12 and the 2nd loop coil 13 are split on circuit, make the 1st loop coil 12 and the 2nd loop coil 13 independent performance function separately.That is, the 1st loop coil 12 and the 2nd loop coil 13 form 1 loop coil via through hole 14, and from possession performance function, but 2 loop coils had not only been interacted but also independent performance function.
Therefore, the impedance of antenna assembly 10C is reduced to about half and when with load-modulate mode and external device communication, and the impedance variation of the antenna assembly 10C when load conducting (ON) that is connected with antenna assembly 10C via holding wire TR1, TR2/close (OFF) is compared change greatly with the unconnected situation of reference potential with through hole 14 parts.That is, it is large that the difference of the counter field producing from antenna assembly 10C in the time of load ON and when OFF becomes, and the S/N ratio of load modulation signal improves, and as a result of, the detection sensitivity of external equipment uprises, and communication performance improves.
Have again, in the situation that load is resistance, more than the difference of the resistance value of ON and OFF is preferably 50 Ω.That is, the impedance variation of the larger expression antenna assembly of the difference of the resistance value of ON and OFF 10C is more remarkable, and communication performance improves.
(the 5th execution mode)
Fig. 9 is the plane graph that sees through the related antenna assembly 10D of the 5th execution mode from 1st toroidal side 11A.
The difference of the related antenna assembly 10A of the 2nd execution mode shown in antenna assembly 10D and Fig. 5 A that the 5th execution mode shown in Fig. 9 is related is, in the time that the 1st loop coil 12 and the 2nd loop coil 13 are projected on same plane, at the peristome that is formed with the 1st loop coil 12 and the 2nd loop coil 13, dispose single or multiple antenna 601 for far-field communication.(this figure disposes single antenna element (element).)
Have, far-field communication for example has GPS, Bluetooth (registered trade mark), WLAN (WiFi) antenna etc. with antenna again.
By being formed with the 1st loop coil 12 antenna element 601 different with the peristome configuration communication frequency band of the 2nd loop coil 13 like this, become thereby can provide not increase the size of antenna assembly 10D and be suppressed at the relative angle of external equipment the decline of communication performance and the antenna assembly 10D of multiband that in large situation, produce.
Embodiment
Be described more specifically content of the present invention with reference to embodiment and comparative example, but the present invention is not limited to the embodiment of the following stated.
(embodiment 1)
Figure 10 A is the plane graph of seeing the related antenna assembly of embodiment 1 100 from 1st toroidal side 110A.As shown in the figure, be provided with magnetic flakes 150 in 1st toroidal side of printed base plate 110.In addition, Figure 10 B is the plane graph of seeing antenna assembly 100 from 2nd toroidal side 110B.In addition, Figure 11 is the plane graph that sees through antenna assembly 100 from 1st toroidal side 110A.
As shown in Figure 10 A and Figure 10 B, in antenna assembly 100, the height h1 of printed base plate 110 is about 25mm, and width w1 is about 15mm.Have, the thickness of printed base plate 110 is about 50 μ m again, and material is polyimides.In addition, the distribution width p1 of the 1st loop coil 120 and the 2nd loop coil 130 is about 1.0mm.Have, the 1st loop coil 120 is connected by through hole 140 with the 2nd loop coil 130 again, and the thickness of conductor is about 35 μ m, and material is copper.
In addition, from the gap g1 till object line to the 1 loop coil 120 and the 2nd loop coil 130 of substrate 110, remove the 2nd 110R of limit portion and be about 0.5mm, at the 2nd 110R of limit portion, gap is divided into the region of g1 and g2, g2 is about 2.0mm.In addition, as shown in figure 11, be formed with 2 regions that configure with the 1st loop coil 120 and the mutual nonoverlapping mode of the 2nd loop coil 130 at the 2nd 110R of limit portion, make to intersect on one point at Wiring pattern and the Wiring pattern of loop coil 130 of near this interregional (central authorities of the 2nd 110R of limit portion) loop coil 120.Have, the 1st loop coil 120 and the 2nd loop coil 130 width g3 that staggers is about 0.5mm again.
In addition, its height of magnetic flakes 150 h2 are about 25mm, and width w2 is about 13mm, and can't help with the 1st loop coil 120 of the 1st 110L of limit portion and the 2nd loop coil 130 mode that magnetic flakes covers and be arranged on substrate 110.
Have again, in antenna assembly 100, suppose actual use and be provided with pad electrode 161,162,171,172.Pad electrode 161 is connected via through hole 141 with 171, and pad electrode 162 is connected via through hole 142 with 172.In addition, suppose at pad electrode 161,162 via spring catch etc. and be connected with Circuits System, making bottom line only not cover the magnetic flakes in the region that disposes pad electrode 161,162.Have, the place that forms pad electrode 161,162,171,172 also can, in the inner side of substrate 110, also can for example form at the arranged outside jut of substrate 110 again.
(comparative example 1)
As a comparative example 1, in Figure 12 A, represent convolution shape coil 200, in Figure 12 B, represent it is the spiral coil 300 of the most general antenna assembly.
Figure 12 A is the plane graph that 1st toroidal the side 110A from being provided with magnetic flakes sees through convolution shape coil 200.In addition, Figure 12 B is the plane graph that 1st toroidal side 110A from being provided with magnetic flakes sees through spiral coil 300.
Convolution shape coil 200 shown in Figure 12 A is in order to confirm the effect of antenna assembly 100, even and if at the region configuring with the 1st loop coil 120 and the mutual nonoverlapping mode of the 2nd loop coil 130 (the 2nd 110R of limit portion), also the 1st loop coil 120 and the 2nd loop coil 130 are configured in overlapping mode.In addition, the 1st 110L of limit portion is covered by magnetic flakes 150.
Spiral coil 300 shown in Figure 12 B only forms 2 circle loop coils 120 at the 1st toroidal of printed base plate 110, and a part that only arrives pad electrode 162 (172) is formed on 2nd toroidal side.Have, distribution width is about 0.5mm again, and patch bay is about 0.1mm.In addition, the 1st 110L of limit portion is covered by magnetic flakes 150.
The model configuration of the effect for confirming the related antenna assembly of embodiment 1 100 is illustrated in to Figure 13 A.
Figure 13 A is the figure that sees antenna assembly 100,200,300 and external equipment 400 from above.As shown in the figure, antenna assembly 100,200,300 and external equipment 400 configure under the state of centring axle CA.Figure 13 B is A-A ' the line sectional view of Figure 13 A.As shown in the figure, antenna assembly 100,200,300 and external equipment 400 distance of separation d and configure.Figure 13 C represents the situation with the relative angle θ of external equipment 400 by 100,200,300 inclinations of the antenna assembly of Figure 13 B.As shown in the figure, using the 2nd 110R of limit portion of antenna assembly 100,200,300 as the side separating with external equipment 400, will be defined as apart from d from the 1st 110L of limit portion till the distance of external equipment 400.Have again, in this model configuration, become and make 2nd toroidal the side 110B that magnetic flakes 150 is not set of antenna assembly 100,200,300 relative with external equipment 400, and be provided with the not relative structure (not shown) of 1st toroidal side 110A of magnetic flakes 150.
In by the model configuration shown in Figure 13 A, calculate the transmission characteristic of the electric power from external equipment 400 to antenna assembly 100,200,300 transmission with the electromagnetic field simulation software HFSS of ANSYS company and circuit simulation software Ansoft Designer.Particularly, electricity consumption magnetic simulation software HFSS to make external equipment 400 and antenna assembly 100,200,300 respectively relative structure carry out electromagnetic field parsing, the S parameter as a result of obtaining is input to circuit simulation software Ansoft Designer, the peripheral circuits such as matching connection circuit, and calculate the transmission characteristic of electric power.The unit of the transmission characteristic of electric power uses dB (decibel), and value is larger represents that the transmission characteristic of electric power is better.
Have again, as the condition of this simulation, the distance of antenna assembly 100,200,300 and external equipment 400 is about 30mm, the relative angle of antenna assembly 100,200,300 and external equipment 400 is 0 °, 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, the antenna assembly of external equipment 400 uses the spiral coil of 2 circles, its size is about 100mm × 100mm (not shown), under the state of central shaft CA of aiming at each antenna assembly, simulates.
Figure 14 be with the relative angle θ of external equipment 400 under represent the chart of the transmission characteristic of the electric power that this analog result obtains.As shown in the figure, antenna assembly 100 is compared with antenna assembly 200, and about 24.1dB under about 4.8dB under about 2.6dB under about 1.7dB under about 1.1dB under about 0.6dB under 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, represents that transmission characteristic improves.In addition, compare with antenna assembly 300, about 24.6dB under about 5.1dB under about 2.9dB under about 1.9dB under about 1.3dB under about 0.9dB under 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, represents that transmission characteristic improves., being suppressed at the decline that becomes the communication performance producing in large situation with the relative angle of external equipment is predicted.
In addition, test based on this simulation.This experiment is mensuration and the experiment of the maximum communication distance of external equipment 400, and the simulation of its structure and embodiment 1 similarly, becomes the structure as Figure 13 A, uses general rfid interrogator in external equipment 400.
The result of this experiment is illustrated in Figure 15.As shown in the figure, the maximum communication distance of antenna assembly 100 is compared with antenna assembly 200,300, and known is in 15 °～90 °, to want large with relative angle θ external equipment 400.That is, confirm to be suppressed at the decline that becomes the communication performance producing in large situation with the relative angle of external equipment, represent that its effect is confirmed.
(embodiment 2)
Suppose that antenna assembly 100 is mounted in the situation in the basket of mobile terminal, the metallic plate 500 of additional thin in the structure of the simulation and experiment carrying out in embodiment 1.
Figure 16 A is the figure that represents the structure of this simulation, represents the model configuration of embodiment 1.With Figure 13 A not identical point be to become the structure that is attached with metal sheet 500.Figure 16 A is the schematic diagram of seeing antenna assembly 100,200,300 and external equipment 400 and metallic plate 500 from above.In addition, Figure 16 B is A-A ' the line sectional view of Figure 16 A.As shown in the figure, antenna assembly 100,200,300 and external equipment 400 distance of separation d and configure.Figure 16 C represents the antenna assembly of Figure 16 B 100,200,300 and metallic plate 500 to tilt and the situation of the relative angle θ of external equipment 400.Metallic plate 500 with the gap parallel deployment in vertical direction of antenna assembly 100,200,300 about 3mm, near the end of metallic plate 500, configure antenna assembly 100,200,300.Have, the size of metallic plate 500 is about 110mm × 40mm again, and thickness is about 18 μ m, and material is copper.This is the situation of circuit substrate of supposition mobile terminal inside, and is to have reproduced emulation antenna assembly 100,200,300 is equipped on to the situation of mobile terminal.In addition, even in this model configuration, also become and make 2nd toroidal the side 110B that magnetic flakes 150 is not set of antenna assembly 100,200,300 relative with external equipment 400, and be provided with 1st toroidal the side 110A structure (not shown) relative with the face side of metallic plate 500 of magnetic flakes 150.
Have, this simulation also similarly to Example 1, is calculated the transmission characteristic of the electric power from external equipment 400 to antenna assembly 100,200,300 transmission again.In addition, these simulated conditions also similarly to Example 1, the distance d of antenna assembly 100,200,300 and external equipment 400 is about 30mm, the relative angle θ of antenna assembly 100,200,300 and external equipment 400 is 0 °, 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, the antenna assembly of external equipment 400 uses 2 circle spiral coils, its size is about 100mm × 100mm (not shown), under the state of central shaft CA of aiming at each antenna assembly, simulates.
Figure 17 be with the relative angle θ of external equipment 400 under represent the chart of the transmission characteristic of the electric power obtaining from this analog result.As shown in the figure, antenna assembly 100 is compared with antenna assembly 200, and under 30 °, about 9.4dB under about 9.2dB under about 4.0dB under about 1.9dB under about 0.6dB, 45 °, 60 °, 75 °, 90 °, represents that transmission characteristic improves.In addition, compare with antenna assembly 300, under 30 °, about 10.0dB under about 9.6dB under about 4.4dB under about 2.3dB under about 1.0dB, 45 °, 60 °, 75 °, 90 °, represents that transmission characteristic improves., being suppressed at the decline that becomes the communication performance producing in large situation with the relative angle of external equipment is predicted.
In addition, test based on this simulation.This experiment is mensuration and the experiment of the maximum communication distance of external equipment 400, and the model configuration of its structure and embodiment 2 similarly becomes the structure as Figure 15 A, uses general rfid interrogator in external equipment 400.
The result of this experiment is indicated in Figure 18.As shown in the figure, the maximum communication distance of antenna assembly 100 is compared with antenna assembly 200,300, known being to want large in 30 °～90 ° with the relative angle θ of external equipment 400.That is, even in the situation that antenna assembly 100 is equipped on mobile terminal, also confirm to be suppressed at the decline that becomes the communication performance producing in large situation with the relative angle of external equipment, represent that its effect is confirmed.
(embodiment 3)
Figure 19 is the plane graph that sees through the related antenna assembly 100A of embodiment 3 from 1st toroidal side 110A.
As shown in figure 19, antenna assembly 100A is in order to confirm its effect, in the antenna assembly 100 shown in Figure 11, pad electrode 163 is arranged to the 1st toroidal and become, and pad electrode 173 is arranged to the 2nd toroidal, accompany therewith, make the position of through hole 140 move to the structure on pad electrode., the pad electrode of antenna assembly 100A becomes 161 (171), 162 (172), 163 (173) 3 terminals, can be connected in a pair of holding wire TR1, TR2 and reference potential (ground connection).
Figure 20 A is an example that represents to receive with the transmission of the rfid system of antenna assembly 100 circuit structure diagram being connected of signal circuit.In addition, Figure 20 B is an example that represents to receive with the transmission of the rfid system of antenna assembly 100A the circuit structure diagram being connected of signal circuit.
As shown in Figure 20 B, the 1st loop coil 120 of antenna assembly 100A is connected in holding wire TR1 at pad electrode 162 (172), is connected in reference potential at pad electrode 163 (173).In addition, the 2nd loop coil 130 is connected in holding wire TR2 at pad electrode 161 (171), is connected in reference potential at pad electrode 163 (173)., the 1st loop coil 120 and the 2nd loop coil 130 by reference potential cutting, are brought into play independently of one another function on circuit.Have, as shown in FIG. 20 A, antenna assembly 100 does not have pad electrode 163 (173) again, thereby the 1st loop coil 120 and the 2nd loop coil 130 can not be connected in reference potential, separately from possession performance function.
In order to confirm the effect of the related antenna assembly 100A of embodiment 3, and with the experiment of embodiment 2 similarly, with the structure determination shown in Figure 16 A and the maximum communication distance of external equipment 400.Have, the resistance value in the time that load is ON is set as to approximately 1000 Ω, resistance value when OFF is set as approximately 5 Ω and tests.
The result of this experiment is illustrated in Figure 21.As shown in the figure, the maximum communication distance of antenna assembly 100A is compared with antenna assembly 100, known being to want large in 0 °～90 ° with the relative angle θ of external equipment 400.That is, be connected in identical reference potential by the 1st loop coil 120 with the 2nd loop coil 130, thereby confirm that the communication performance of antenna assembly 100A improves, and represents that its effect is confirmed.
(embodiment 4)
Figure 22 is the plane graph that sees through the related antenna assembly 100D of embodiment 4 from 1st toroidal side 110A.
As shown in figure 22, antenna assembly 100D becomes and is being formed with the 1st loop coil 120 of the antenna assembly 100 shown in Figure 11 and the peristome of the 2nd loop coil 130 and configures the antenna assembly of single or multiple far-field communication antenna 602.(this figure disposes single antenna element.)
Have, far-field communication has referred to such as GPS, Bluetooth (registered trade mark), WLAN (WiFi) antenna etc. with antenna again.
One end of supposing far-field communication antenna 602 is via spring catch etc. and be connected with Circuits System, and the other end becomes open end.By such configuration far-field communication antenna, thereby become the single ball antenna with 1/4 wavelength action.
Magnetic flakes 150 can cover antenna 602 for far-field communication, and the frequency band loss of moving with antenna 602 in far-field communication in magnetic flakes 150 is large, magnetic flakes 150 is cover antenna element 602 not.
In above-described embodiment 4, be that rivulose situation represents with regard to far-field communication with the component shape of antenna, but also can be for example roughly U-shaped, other shapes such as L word shape roughly.
Claims (6)
1. an antenna assembly, is characterized in that:
At a face of printed base plate, the 1st loop coil is set respectively, at another face, the 2nd loop coil is set, connect described 2 loop coils with the through hole that is arranged on described printed base plate, the 2nd mutual nonoverlapping mode of limit portion overlapped described the 1st loop coil and described the 2nd loop coil the 1st limit portion when projecting in same plane and that be positioned at the position symmetrical with described the 1st limit portion is configured, and magnetic flakes is set as follows, cover the region configuring in described the 2nd mutual nonoverlapping mode of limit portion.
2. antenna assembly as claimed in claim 1, is characterized in that:
Described the 1st toroidal the 1st limit portion can't help described magnetic flakes and covers.
3. antenna assembly as claimed in claim 1 or 2, is characterized in that:
In the region configuring in described the 2nd nonoverlapping mode of limit portion, the 1st toroidal Wiring pattern intersects at least on one point with the 2nd toroidal Wiring pattern.
4. the antenna assembly as described in any one in claim 1～3, is characterized in that:
Described the 1st loop coil is connected in identical reference potential with described the 2nd loop coil.
5. the composite antenna apparatus as described in any one in claim 1～4, is characterized in that:
Single or multiple far-field communication is being formed with to described the 1st loop coil and the 2nd toroidal peristome with antenna configuration.
6. a mobile terminal, is characterized in that:
Antenna assembly described in any one in claim 1～5 is mounted in basket.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-239844 | 2011-11-01 | ||
| JP2011239844 | 2011-11-01 | ||
| PCT/JP2012/075739 WO2013065443A1 (en) | 2011-11-01 | 2012-10-04 | Antenna device and portable terminal |
Publications (2)
| Publication Number | Publication Date |
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| CN104025381A true CN104025381A (en) | 2014-09-03 |
| CN104025381B CN104025381B (en) | 2016-06-15 |
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| CN201280053327.4A Expired - Fee Related CN104025381B (en) | 2011-11-01 | 2012-10-04 | Antenna assembly and mobile terminal |
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| JP (1) | JP5958473B2 (en) |
| CN (1) | CN104025381B (en) |
| WO (1) | WO2013065443A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112134586A (en) * | 2019-06-05 | 2020-12-25 | 华为技术有限公司 | Transmitting/receiving device and transmitting/receiving equipment |
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| JP2011029678A (en) * | 2007-11-20 | 2011-02-10 | Tyco Electronics Raychem Kk | Antenna element and method for manufacturing the same |
| JP4883233B2 (en) * | 2011-03-15 | 2012-02-22 | 株式会社村田製作所 | Coil antenna and portable electronic device |
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2012
- 2012-10-04 JP JP2013541685A patent/JP5958473B2/en not_active Expired - Fee Related
- 2012-10-04 WO PCT/JP2012/075739 patent/WO2013065443A1/en active Application Filing
- 2012-10-04 CN CN201280053327.4A patent/CN104025381B/en not_active Expired - Fee Related
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| CN1816945A (en) * | 2003-06-06 | 2006-08-09 | 索尼株式会社 | Antenna module and mobile communication terminal equipped therewith |
| US20070051807A1 (en) * | 2003-08-13 | 2007-03-08 | Koichi Yamaguchi | Reader/writer and mobile communication apparatus |
| CN101069323A (en) * | 2005-06-30 | 2007-11-07 | 索尼化学&信息部件株式会社 | Antenna apparatus |
| JP4917484B2 (en) * | 2006-06-16 | 2012-04-18 | ニッタ株式会社 | Magnetic sheet, antenna device using the same, and electronic information transmission device |
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| CN112134586A (en) * | 2019-06-05 | 2020-12-25 | 华为技术有限公司 | Transmitting/receiving device and transmitting/receiving equipment |
| CN112134586B (en) * | 2019-06-05 | 2022-05-17 | 华为技术有限公司 | Transceiver device and transceiver apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2013065443A1 (en) | 2015-04-02 |
| CN104025381B (en) | 2016-06-15 |
| JP5958473B2 (en) | 2016-08-02 |
| WO2013065443A1 (en) | 2013-05-10 |
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