CN101976762A - Two-channel coil antenna and device applying same - Google Patents
Two-channel coil antenna and device applying same Download PDFInfo
- Publication number
- CN101976762A CN101976762A CN201010286419XA CN201010286419A CN101976762A CN 101976762 A CN101976762 A CN 101976762A CN 201010286419X A CN201010286419X A CN 201010286419XA CN 201010286419 A CN201010286419 A CN 201010286419A CN 101976762 A CN101976762 A CN 101976762A
- Authority
- CN
- China
- Prior art keywords
- coil
- conductor layer
- terminal
- binary channels
- conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
The embodiment of the invention discloses a two-channel coil antenna and a device applying the two-channel coil antenna, relating to the technical field of antenna and solving the technical problem that cross coupling of two coil antennae is strong in the two-channel coil antenna in the prior art. The two-channel coil antenna in the embodiment comprises a flexible or non flexible medium substrate, a first conductor layer and a second conductor layer are respectively correspondingly arranged on a first surface and a second surface of the medium substrate; the first conductor layer and the second conductor layer are all composed of coils, wherein projection of the coil of the first conductor layer along the normal direction of the plane where the first conductor layer is located and projection of the coil of the second conductor layer along the normal direction of the plane where the second conductor layer is located are mutually separate. The embodiment of the invention is mainly applied to scene of transmitting and receiving signals.
Description
Technical field
The present invention relates to antenna technical field, relate in particular to a kind of binary channels coil antenna and have the device of this binary channels coil antenna.
Background technology
The reader of RFID (Radio Frequency Identification, radio-frequency (RF) identification) system generally will come electronic tag is discerned by the antenna launching electromagnetic wave.The part rfid system adopts binary channels coil antenna receiving and transmitting signal according to application demand, promptly finishes the signal emission by an antenna, receives and bear signal by another root antenna.
In low frequency (125KHz) or high frequency (13.56MHz) rfid system, for guaranteeing certain communication distance, the antenna of the reader of rfid system need produce the magnetic field of certain intensity, this class antenna adopts the induction coil of printed circuit form to realize usually, and this coil can produce required inductance in small space.Usually the method that produces the binary channels coil antenna is that the heavy caliber coil comprises small-bore coil, two wire coils can be positioned at some surfaces of medium substrate simultaneously, the binary channels coil antenna of rectangle bore in the prior art as shown in Figure 1, the helical coil 6 of two passage, 7 all are positioned at the upper surface of medium substrate 30, external spiral shape coil (large-caliber spiral coil) 7 is 2 circles, inside spin shape coil (small-bore helical coil) 6 is 3 circles, the rotation direction of two helical coils is counterclockwise rotation direction from the inside to the outside, Fig. 2 is the three-dimensional view of Fig. 1, can clearly see: large-caliber spiral shape coil 7, plated-through hole 20 and input/output terminal form an accurate close passage to 71 and (refer to after additional equipment is connected, can form the passage of closed-loop path), and be positioned at the small-bore spiral coil 6 of heavy caliber coil 7 inside, plated-through hole 20 and input/output terminal form another accurate close passage to 61; Two wire coils also can lay respectively at two surfaces up and down of medium substrate, the binary channels coil antenna of rectangle bore in the prior art as shown in Figure 3, the spiral coil 8 of two passage, 9 lay respectively at medium substrate 30 on, lower surface, large-caliber spiral shape coil 9 is 6 circles, small-bore spiral coil 8 is 4 circles, the rotation direction of two helical coils be from the inside to the outside dextrorotation to, Fig. 4 is the three-dimensional view of Fig. 3, can clearly see: the large-caliber spiral shape coil 9 that is positioned at first conductor layer (lower surface of medium substrate 30), plated-through hole 20 and input/output terminal form an accurate close passage to 91, and are positioned at the small-bore spiral coil 8 of second conductor layer (upper surface of medium substrate 30), plated-through hole 20 and input/output terminal form another accurate close passage to 81.
State in realization in the process of binary channels coil antenna, the inventor finds that there are the following problems at least in the prior art: the mutual coupling between two coils of binary channels coil antenna is very serious, significantly reduced the performance of coil antenna, the contactless communication distance is fallen sharply, though suitably increase by two spacings between the coil, can reduce mutual coupling, help reducing coil antenna Q (Quality factor, quality factor) Zhi loss, but do the volume that certainly will increase equipment like this, and in most cases, because the restriction in space is difficult to increase the spacing between the coil antenna.
Summary of the invention
The device that embodiments of the invention provide a kind of binary channels aerial coil and have this binary channels antenna not only can effectively utilize the space but also can reduce in the binary channels coil antenna mutual coupling influence between two coils.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of binary channels coil antenna comprises the medium substrate of flexibility or inflexibility, the first surface of described medium substrate and second surface respectively correspondence be provided with first conductor layer and second conductor layer;
Described first conductor layer and described second conductor layer are formed by coil, and wherein, projection and described second conductor layer coil the projection on its place plane of the described first conductor layer coil on plane, the described second conductor layer coil place is separated from each other.
A kind of device is comprising above-mentioned binary channels coil antenna.
In the scheme that present embodiment provides, projection and described second conductor layer coil the projection on its place plane of the described first conductor layer coil on plane, the described second conductor layer coil place is separated from each other, promptly not overlapping, this structure not only can improve space availability ratio, the distributed capacitance of binary channels coil antenna is diminished, and then the self-resonant frequency of guaranteeing antenna is higher than operating frequency far away, so effectively reduce the mutual coupling between the first conductor layer coil and the second conductor layer coil, two coils are not interacted each other, not only can help guaranteeing the independence of two coil workings, also can make antenna have good electric property.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is positioned at the binary channels coil antenna floor map of the rectangle bore of same conductor layer for coil in the background technology;
Fig. 2 is the schematic perspective view of Fig. 1 in the background technology;
Fig. 3 is positioned at the binary channels coil antenna floor map of the rectangle bore of different conductor layer for coil in the background technology;
Fig. 4 is the schematic perspective view of Fig. 3 in the background technology;
Fig. 5 is the floor map of the binary channels coil antenna of three terminal I/O mode rectangle bores in the embodiment of the invention 1;
Fig. 6 is the schematic perspective view of the embodiment of the invention 1 Fig. 5;
Fig. 7 is the floor map of the binary channels coil antenna of four terminal I/O mode rectangle bores in the embodiment of the invention 2;
Fig. 8 is the schematic perspective view of the embodiment of the invention 2 Fig. 7;
Symbol description:
20---plated-through hole;
30---medium substrate;
6---the inside spin shape coil of same conductor layer;
7---the external spiral shape coil of same conductor layer;
61---terminal;
71---terminal;
8---the inside spin shape coil of upper surface conductor layer;
9---the external spiral shape coil of lower surface conductor layer;
10---three terminal binary channels coil antennas;
3---the medium substrate of three terminal binary channels coil antennas;
4---the second conductor layer spiral coil of three terminal binary channels coil antennas;
5---the first conductor layer spiral coil of three terminal binary channels coil antennas;
11---the conductor segment that continues of three terminal binary channels coil antennas;
1,41,51---three terminals of binary channels coil antenna;
2---the plated-through hole of three terminal binary channels coil antennas;
12---four terminal binary channels coil antennas;
31---the medium substrate of four terminal binary channels coil antennas;
42---the second conductor layer spiral coil of four terminal binary channels coil antennas;
52---the first conductor layer spiral coil of four terminal binary channels coil antennas;
13---the conductor segment that continues of four terminal binary channels coil antennas;
411,412,511,512---four terminals of binary channels coil antenna;
21---the plated-through hole of four terminal binary channels coil antennas;
Need to prove: though the coil 4 among Fig. 5 and coil 4 among Fig. 6 seem that color is different, the coil of Fig. 55 seems that with coil 5 among Fig. 6 color is different, coil 4 all is to refer to same things in Fig. 5 and Fig. 6, and coil 5 also is like this.The reason that demonstrates different colours is as follows: Fig. 5 and Fig. 6 that the applicant adopts same mapping software to draw, coil 4 has adopted the representative of metallic aluminium look when drawing, coil 5 has adopted the black representative when drawing, but because the mapping software that adopts has the light sensation function, therefore the coil 4 of metallic aluminium look has demonstrated white in Fig. 5 of floor map, sees just that in Fig. 6 of schematic perspective view drawing is the metallic aluminium look; Based on same reason, the wire coil 5 of black is seen in Fig. 5 of floor map and drawn is black, but what demonstrate in Fig. 6 of schematic perspective view is more shallow black.
In like manner, though the coil 42 among Fig. 7 and coil 42 among Fig. 8 seem that color is different, the coil of Fig. 7 52 seems that with coil 52 among Fig. 8 color is different, coil 42 all is to refer to same things in Fig. 7 and Fig. 8, and coil 52 also is like this.The reason that specifically can demonstrate different colours is the same, does not give unnecessary details at this.
Embodiment
Embodiments of the invention have been described a kind of binary channels coil antenna, this binary channels coil antenna comprises a kind of medium substrate, this medium substrate can comprise flexibility or inflexibility, the first surface of described medium substrate and second surface respectively correspondence closely be provided with first conductor layer and second conductor layer;
Described first conductor layer and described second conductor layer are formed by coil, and wherein, projection and described second conductor layer coil the projection on its place plane of the described first conductor layer coil on plane, the described second conductor layer coil place is separated from each other.
Wherein, the above-mentioned coil of mentioning comprises: etching metal coil or printed circuit cable coil.
Preferably, the above-mentioned first conductor layer coil is separated from each other and can be specially in the projection on its plane, place in projection on the plane, the described second conductor layer coil place and the described second conductor layer coil: the projection of the described first conductor layer coil on plane, the described second conductor layer coil place is positioned at the gap of the projection of the described second conductor layer coil on its plane, place.
And the coil in above-mentioned first conductor layer comprises following arbitrary situation or combination:
In the adjacent two circle leads, the sectional area of outer circle lead is more than or equal to the sectional area of interior circle lead arbitrarily;
In the interval between the adjacent two circle leads, the interval width between the outer circle lead is more than or equal to the interval width between the interior circle lead arbitrarily.
The above-mentioned second conductor layer coil comprises following arbitrary situation or combination:
In the adjacent two circle leads, the sectional area of outer circle lead is more than or equal to the sectional area of interior circle lead arbitrarily;
In the interval between the adjacent two circle leads, the interval width between the outer circle lead is more than or equal to the interval width between the interior circle lead arbitrarily.
Wherein, the coil of forming above-mentioned first conductor layer, second conductor layer all is spiral coils, and the bore shape of this spiral coil can be plane geometric shape arbitrarily.
In addition, in the binary channels coil antenna that present embodiment provides, on above-mentioned medium substrate, also comprise: the plated-through hole that penetrates above-mentioned medium substrate; Above-mentioned first conductor layer also comprises: the discrete conductor segment that continues;
The coil of above-mentioned second conductor layer comprises discrete helical conductor section, and this discrete helical conductor section is connected with the discrete conductor segment that continues of above-mentioned first conductor layer by this plated-through hole and forms the described second conductor layer coil with loop character.
The I/O mode of the binary channels coil antenna that provides in the present embodiment further, can comprise: three terminal modes and four terminal modes;
Embodiment is: this first conductor layer and/or this second conductor layer also comprise: terminal conductor section, this terminal conductor section are connected with the above-mentioned first or second conductor layer coil by above-mentioned plated-through hole and form a terminal in three terminal modes or the four terminal modes; Perhaps
This first and/or this second conductor layer on coil extend one section as the terminal conductor section so that become three terminal modes or four terminal modes in a terminal.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.And, below each embodiment be possibility of the present invention, embodiment put in order and the numbering execution sequence preferred of embodiment with it irrelevant.
Embodiment 1
According to the quantity of input/output terminal in the antenna, present embodiment will be specifically is example with the binary channels coil antenna of the rectangle bore of three terminal I/O modes, and a kind of binary channels coil antenna 10 is provided, and as shown in Figure 5, comprising:
The medium substrate 3 of a kind of flexibility or inflexibility, the first surface of described medium substrate 3 and second surface respectively correspondence be provided with first conductor layer and second conductor layer; This first conductor layer is made up of spiral coil 5, this second conductor layer is made up of spiral coil 4, wherein, projection and described second conductor layer coil the projection on its place plane of the described first conductor layer coil on plane, the described second conductor layer coil place is separated from each other.Because, the first surface and the second surface of the binary channels coil antenna 10 that provides in the present embodiment be parallel to each other (promptly first plane, conductor layer place and plane, the second conductor layer place are parallel to each other), so, projection and the described second conductor layer coil of the described first conductor layer coil on plane, the described second conductor layer coil place is separated from each other also in the projection on its plane, place and can be understood as: coil 5 is separated from each other along the projection on its place plane normal direction along projection on its place plane normal direction and coil 4, promptly coil 4 along projection on the coil 4 place plane normal directions and coil 5 projection on coil 5 place plane normal directions do not overlap each other (except that coil 4 and 5 other corners of coil have a small amount of overlapping).Preferably, coil 4 just in time is positioned at the gap of coil 5 along its place plane normal direction projection along its place plane normal direction projection.
As shown in Figure 5, coil 5 and coil 4 are 3 circles, and coil 4 mainly is to be formed by connecting by discrete helical conductor section, and become counterclockwise rotation direction outward from interior; Coil 5 is closed single-screw shape coils, and from interior become outward dextrorotation to.
Wherein, be positioned at the spiral coil 4 of second conductor layer or the spiral coil 5 of first conductor layer, its every circle live width (or sectional area, when circuit is plated circuit, sectional area is specially live width) successively decrease successively from outside to inside, wherein, successively decreasing successively comprises that equal difference is successively decreased or non-equal difference is successively decreased; Also can be to be that a unit successively decreases from outside to inside with at least two adjacent circles, promptly in described multiturn lead loop, reducing of a sectional area of wire appears every at least one circle, particularly, first circle from outside to inside and the sectional area of the second circle lead equate and sectional area big or small be a1, the sectional area of the 3rd circle and the 4th circle lead equate and sectional area big or small be a2, the equal and sectional area of the sectional area of the 5th circle and the 6th circle lead is big or small to be a3, wherein, a1＞a2＞a3.Need to prove, can be equal difference between a1, a2 and the a3, can not be equal difference also.
In addition as long as, every circle live width variation from outside to inside of coil 5 also can be at random and reduces, the live width of the live width of outer circle coil more than or equal to interior circle coil that it guarantee.Particularly, even the situation that exists the live width of adjacent turn coil to equate, its overall variation also is erratic behavior, for example, the live width of first circle from outside to inside, second circle and the 3rd circle coil equate and live width big or small be a1, the live width size of the 4th circle coil is a2, the equal and live width of the live width of the 5th circle and the 6th circle coil is big or small to be a3, wherein, a1, a2 and a3 successively decrease one by one.
Similar for the turn-to-turn between coil 5 adjacent turn apart from from outside to inside Changing Pattern and above-mentioned every circle live width Changing Pattern from outside to inside, repeat no more herein.Need to prove: when every circle live width of coil 5 is successively decreased from outside to inside, what the interval between the adjacent coil of per two circles can be impartial, also can successively decrease from outside to inside.
Particularly, content at foregoing description, the spiral coil 5 of first conductor layer can be the spiral coil 5 of first conductor layer in the present embodiment, its every circle live width can identically also can be successively decreased by outer circle to interior circle rule successively, wherein, by the value of outer circle, can adopt on the basis of the existing live width values such as coil that design and obtain according to perturbation theory to each circle live width of the satisfied distribution of successively decreasing of interior circle.Each circle live width production decline law can evenly successively decrease for equal difference, for example 0.8,0.75,0.7,0.65,0.6,0.55 millimeter of value successively; Production decline law also can successively decrease for inhomogeneous, for example 0.8,0.7,0.6,0.55,0.5,0.45 millimeter of value successively.Turn-to-turn between coil 5 adjacent windings is apart from can identically also successively decreasing successively from outside to inside.Wherein, the turn-to-turn that satisfying from outside to inside successively decreases distributes is apart from value, can on a fixed value basis, obtain according to perturbation theory, if PCB coil, usually this fixed value is made as and is a bit larger tham the minimum turn-to-turn distance that the PCB industry can realize, promptly 0.125 millimeter, selecting this fixed value in the present embodiment is 0.2 millimeter.Each adjacent turn spacing production decline law can evenly successively decrease for equal difference, for example 0.225,0.215,0.205,0.195,0.185 millimeter of value successively; Production decline law also can successively decrease for inhomogeneous, for example 0.225,0.22,0.21,0.2,0.19 millimeter of value successively.
Continuation with reference to the schematic perspective view of Fig. 5 and Fig. 5 binary channels coil antenna 10 shown in Figure 6 as can be known, binary channels coil antenna 10 is except comprising the spiral coil 5 that is positioned at first conductor layer (lower surface of medium substrate 3), on its medium substrate 3, also comprise: the plated-through hole 2 that penetrates medium substrate 3, in addition, first conductor layer of first surface also comprises: the discrete conductor segment 11 that continues (need to prove that this discrete conductor segment 11 that continues seems second conductor layer that belongs to second surface in Fig. 5, be actually first conductor layer that belongs to first surface), the spiral coil 4 of this second conductor layer comprises discrete helical conductor section, described discrete helical conductor section is connected with the discrete conductor segment 11 that continues of described first conductor layer by plated-through hole 2 and then forms and have loop character the described second conductor layer spiral coil 4 of (i.e. closure can be used for transmitting the passage of signal).
Particularly, content at foregoing description, the spiral coil 4 that is positioned at second conductor layer can be the spiral coil 4 that is positioned at second conductor layer in the present embodiment, its every circle live width can identically also can be successively decreased by outer circle to interior circle successively, wherein, by the value of outer circle, can adopt on the basis of the existing live width values such as coil that design and obtain according to perturbation theory to each circle live width of the satisfied distribution of successively decreasing of interior circle.Each circle live width production decline law can evenly successively decrease for equal difference, for example 0.8,0.75,0.7,0.65,0.6,0.55 millimeter of value successively; Production decline law also can successively decrease for inhomogeneous, for example 0.8,0.7,0.6,0.55,0.5,0.45 millimeter of value successively.Turn-to-turn between coil 5 adjacent windings is apart from can identically also successively decreasing successively from outside to inside.Wherein, the turn-to-turn that satisfying from outside to inside successively decreases distributes is apart from value, can on a fixed value basis, obtain according to perturbation theory, if PCB coil, usually this fixed value is made as and is a bit larger tham the minimum turn-to-turn distance that the PCB industry can realize, promptly 0.125 millimeter, selecting this fixed value in the present embodiment is 0.2 millimeter.Each adjacent turn spacing production decline law can evenly successively decrease for equal difference, for example 0.225,0.215,0.205,0.195,0.185 millimeter of value successively; Production decline law also can successively decrease for inhomogeneous, for example 0.225,0.22,0.21,0.2,0.19 millimeter of value successively.
In prior art, two coils are that the mode of big coil cover small coil is compared, binary channels coil antenna 10 adopts the coil turn live width to be successively decreased successively by outer circle to interior circle in the present embodiment, perhaps the turn-to-turn between the adjacent windings can effectively reduce by two mutual coupling influences between the coil apart from the design of successively decreasing successively from outside to inside, be beneficial to the loss that reduces the coil antenna quality factor, meanwhile two coils also are separated from each other along the projection on its place plane normal direction, just in time be arranged in the gap of projection each other, reducing the dysgenic while of two coil mutual coupling, improve the communication capacity of antenna, also effectively utilized the space.
In addition, because the I/O mode of binary channels coil antenna 10 is in the present embodiment: three terminal modes, so, above-mentioned first conductor layer and/or above-mentioned second conductor layer also comprise: the terminal conductor section, this terminal conductor section can be connected with this first or second conductor layer coil by plated-through hole 2, and then form a terminal in the three terminal modes, as terminal among Fig. 61 and terminal 51; Perhaps
The above-mentioned second conductor layer coil 4 extends one section as the terminal conductor section and then become a terminal of three terminal modes, as the terminal among Fig. 6 41; And/or the above-mentioned first conductor layer coil 5 also can extend one section as the terminal conductor section and then become a terminal of three terminal modes according to design and the needs used, and the specific design mode can not given unnecessary details at this with reference to the terminal among Fig. 6 41.
So, pass through said structure, the helical coil 5, plated-through hole 2, terminal 1 and the I/O single terminal 51 that are arranged in first conductor layer (lower surface of medium substrate 3) form an accurate close passage (at present embodiment and following each embodiment, accurate close passage all refers to after additional equipment is connected, can form the passage of closed-loop path), and the helical coil 4, plated-through hole 2, terminal 1 and the I/O single terminal 41 that are positioned at second conductor layer (upper surface of medium substrate 3) form another accurate close passage.
The binary channels coil antenna that present embodiment provides passes through by discrete helical conductor section, plated-through hole, the coil that discrete formations such as connection section conductor segment have loop character, join by these coils and terminal again and constitute the loop that to transmit signal, a kind of three terminal binary channels coil antennas have been formed with different structure, and the corresponding place of these antenna two coils plane normal direction projection just in time is positioned at projection spacing each other, therefore space availability ratio height not only, but also the distributed capacitance of binary channels coil antenna is diminished, the self-resonant frequency that can guarantee antenna thus is higher than operating frequency far away, so can effectively reduce the mutual coupling between two coils of binary channels coil antenna, reduce between two coils because the low technical problem of antenna communication ability that the mutual coupling influence causes, and then obtained the technique effect that not only can effectively utilize the space but also can reduce in the binary channels coil antenna mutual coupling influence between two coils.
According to the quantity of input/output terminal in the antenna, present embodiment will be specifically is example with the binary channels coil antenna of the rectangle bore of four terminal I/O modes, and a kind of binary channels coil antenna 11 is provided, and as shown in Figure 7, comprising:
The medium substrate 31 of a kind of flexibility or inflexibility, the first surface of described medium substrate 31 and second surface respectively correspondence be provided with first conductor layer and second conductor layer; First conductor layer is made up of spiral coil 52, form by spiral coil 42 on second conductor layer, wherein, projection and described second conductor layer coil the projection on its place plane of the described first conductor layer coil on plane, the described second conductor layer coil place is separated from each other.Because, the first surface and the second surface of the binary channels coil antenna 10 that provides in the present embodiment be parallel to each other (promptly first plane, conductor layer place and plane, the second conductor layer place are parallel to each other), so, projection and the described second conductor layer coil of the described first conductor layer coil on plane, the described second conductor layer coil place is separated from each other also in the projection on its plane, place and can be understood as: coil 52 is separated from each other along the projection on its place plane normal direction along projection on its place plane normal direction and coil 42, i.e. the projection of coil 42 along the projection of coil 42 place plane normal directions and coil 52 along coil 52 place plane normal directions do not overlap each other (except that coil 42 and 52 other corners of coil have a small amount of overlapping).Preferably, coil 42 just in time is positioned at the gap of coil 52 along its place plane normal direction projection along its place plane normal direction projection.
As shown in Figure 7, coil 52 and coil 42 are 3 circles, coil 42 mainly is to be formed by connecting by discrete helical conductor section, and become counterclockwise rotation direction outward from interior, coil 52 is closed single-screw shape coils, and from interior become outward dextrorotation to single-screw shape coil, that this single-screw shape coil is meant is closed (middle do not disconnect) spiral coil.Wherein, but every circle live width of the first conductor layer spiral coil 5 and the spacing between the adjacent turn line in the design reference example 1 of every circle live width of this first conductor layer spiral coil 52 and the spacing between the adjacent turn line are not given unnecessary details at this.
Continuation with reference to the schematic perspective view of Fig. 7 and Fig. 7 binary channels coil antenna 12 shown in Figure 8 as can be known, binary channels coil antenna 12 is except comprising the spiral coil 52 that is positioned at first conductor layer (lower surface of medium substrate 31), on its medium substrate 31, also comprise: the plated-through hole 21 that penetrates medium substrate 31, in addition, first conductor layer of first surface also comprises: the discrete conductor segment 13 that continues (need to prove that this discrete conductor segment 13 that continues seems second conductor layer that belongs to second surface in Fig. 7, be actually first conductor layer that belongs to first surface), the spiral coil 42 of this second conductor layer comprises discrete helical conductor section, described discrete helical conductor section is connected with the discrete conductor segment 13 that continues of first conductor layer by plated-through hole 21 and then forms and have loop character the described second conductor layer spiral coil 42 of (i.e. closure can be used for transmitting the passage of signal).Wherein, but every circle live width of the first conductor layer spiral coil 4 and the spacing between the adjacent turn line in the design reference example 1 of every circle live width of this second conductor layer spiral coil 42 and the spacing between the adjacent turn line are not given unnecessary details at this.
In prior art, two coils are that the mode of big coil cover small coil is compared, binary channels coil antenna 12 two coil are not overlapped along the projection on its place plane normal direction in the present embodiment, and just in time be seated in the gap of projection each other, two coil mutual coupling harmful effects both can have been reduced, improve the communication capacity of antenna, also can effectively utilize the space.
Because the I/O mode of binary channels coil antenna 12 is in the present embodiment: four terminal modes, so, above-mentioned first conductor layer also comprises: the terminal conductor section, this terminal conductor section can be connected with this first or second conductor layer coil and then forms a terminal in the four terminal modes by plated-through hole 21, as terminal among Fig. 8 511 and terminal 512; And/or above-mentioned second conductor layer also can comprise the terminal conductor section according to the needs that design, this terminal conductor section can be connected with this first or second conductor layer coil and then forms a terminal in the four terminal modes by plated-through hole 21, the specific design mode can not given unnecessary details at this with reference to terminal among Fig. 8 511 or terminal 512.
The above-mentioned second conductor layer coil 42 extends one section as the terminal conductor section and then become a terminal of four terminal modes, as terminal among Fig. 8 411 and terminal 412.And/or the above-mentioned first conductor layer coil 52 also can extend one section as the terminal conductor section and then become a terminal of four terminal modes according to the needs of design, and the specific design mode can not given unnecessary details at this with reference to terminal among Fig. 8 411 or terminal 412.
So, pass through said structure, spiral coil 52, plated-through hole 21 and the input/output terminal that is positioned at first conductor layer (lower surface of medium substrate 31) forms an accurate close passage to 511 and 512, and the spiral coil 42, plated-through hole 21 and the input/output terminal that are positioned at second conductor layer (upper surface of medium substrate 31) form another accurate close passage to 411 and 412.
In the binary channels coil antenna that present embodiment provides, the first conductor layer coil is not overlapping along the projection on its place plane normal direction along projection on its place plane normal direction and the described second conductor layer coil, this structure not only can improve space availability ratio, the distributed capacitance of binary channels coil antenna is diminished, and then the self-resonant frequency of guaranteeing antenna is higher than operating frequency far away, so effectively reduce the mutual coupling between the first conductor layer coil and the second conductor layer coil, two coils are not interacted each other, not only can help guaranteeing the independence of two coil workings, also can make antenna have good electric property.
Present embodiment provides a kind of device, and this communicator comprises the binary channels coil antenna 10 of the foregoing description 1 described three terminal I/O modes, perhaps comprises the foregoing description 2 described four terminal I/O mode binary channels coil antennas 12.
The device that present embodiment provides, because projection and described second conductor layer coil the projection on its place plane of it binary channels coil antenna that comprises first conductor layer coil on plane, the described second conductor layer coil place is separated from each other, be that projection is not overlapping, therefore the distributed capacitance of binary channels coil antenna diminishes, the self-resonant frequency that can guarantee antenna thus is higher than operating frequency far away, so effectively reduce the mutual coupling between the first conductor layer coil and the second conductor layer coil, and, because it both need not to take big quantity space, do not interact each other again between two coils, so communication capacity is stronger, the reliability height of signal transmitting and receiving ability.
The various embodiments described above are to be described under the situation that first surface and second surface are parallel to each other; sometimes may also have first surface according to the needs of Antenna Design and second surface not parallel (promptly first plane, conductor layer place and plane, the second conductor layer place are not parallel; have angle) situation; at this moment; still in order to guarantee the performance of antenna; following projection and described second conductor layer coil projection on its place plane the marrow that the is separated from each other binary channels antenna designed of the described first conductor layer coil on plane, the described second conductor layer coil place still belongs in protection scope of the present invention; specific embodiments is that those skilled in the art can be known easily according to the scheme that the foregoing description provides, and does not give unnecessary details at this.
The various embodiments described above only are described in detail with specific exemplary embodiments, under the situation that does not break away from claims of the present invention, can carry out various modifications, repacking and change.For example: two spiral coils that lay respectively at first and second conductor layer, its rotary orientation can be identical also can be opposite, but no matter in the same way whether the rotation direction of two coils, must guarantee all during design that the magnetic field that two coils produce in the working region is addition in the same way rather than oppositely offsets that this is identical with regard to requiring two current directions in the coil.Based on this principle, when the rotation direction of two coils is identical, just on terminal separately, apply the signal of identical polar; When the rotation direction of two coils is opposite, just on terminal separately, apply the signal of opposite polarity.Again for example: lay respectively at two spiral coils of first and second conductor layer, the geometric figure that its bore shape can have any shape is as triangle, rectangle, square, circle, ellipse etc.; The number of turn of two helical coils and caliber size meet design requirement by the magnetic flux that calculates the coil generation and decide, and can be the same or different.Again for example: the coil of described first conductor layer and described second conductor layer can be the etching metal coil; Also can be the printed circuit cable coil.
Said apparatus can be a smart card, for example double-interface smart card (comprising contact type intelligent card and contact intelligent card); Described device can also be a read-write equipment for smart card, for example Non-contact Media Reader, POS (Point Of Sale, point-of-sale terminal) machine, the subway gate etc. of swiping the card.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of above-mentioned claim.
Claims (10)
1. a binary channels coil antenna is characterized in that, comprises medium substrate, the first surface of described medium substrate and second surface respectively correspondence be provided with first conductor layer and second conductor layer;
Described first conductor layer and described second conductor layer are formed by coil, and wherein, projection and described second conductor layer coil the projection on its place plane of the described first conductor layer coil on plane, the described second conductor layer coil place is separated from each other.
2. binary channels coil antenna according to claim 1 is characterized in that, also comprises on described medium substrate: the plated-through hole that penetrates described medium substrate; Described first conductor layer also comprises: the discrete conductor segment that continues;
The coil of described second conductor layer comprises discrete helical conductor section, and described discrete helical conductor section is connected with the discrete conductor segment that continues of described first conductor layer by described plated-through hole and forms the described second conductor layer coil with loop character.
3. binary channels coil antenna according to claim 2 is characterized in that, the I/O mode of described binary channels coil antenna comprises: three terminal modes and four terminal modes;
Described first conductor layer and/or described second conductor layer also comprise: terminal conductor section, described terminal conductor section are connected with the described first or second conductor layer coil by described plated-through hole and form a terminal in three terminal modes or the four terminal modes; Perhaps
On described first and/or second conductor layer coil extend one section as the terminal conductor section so that become three terminal modes or four terminal modes in a terminal.
4. binary channels coil antenna according to claim 1, it is characterized in that the described first conductor layer coil is separated from each other in the projection on its plane, place at the projection on the plane, the described second conductor layer coil place and the described second conductor layer coil and comprises: the projection of the described first conductor layer coil on plane, the described second conductor layer coil place is positioned at the gap of the projection of the described second conductor layer coil on its plane, place.
5. binary channels coil antenna according to claim 1 is characterized in that, the coil in described first conductor layer comprises following arbitrary situation or combination:
In the adjacent two circle leads, the sectional area of outer circle lead is more than or equal to the sectional area of interior circle lead arbitrarily;
In the interval between the adjacent two circle leads, the interval width between the outer circle lead is more than or equal to the interval width between the interior circle lead arbitrarily.
6. binary channels coil antenna according to claim 1 is characterized in that, the described second conductor layer coil comprises following arbitrary situation or combination:
In the adjacent two circle leads, the sectional area of outer circle lead is more than or equal to the sectional area of interior circle lead arbitrarily;
In the interval between the adjacent two circle leads, the interval width between the outer circle lead is more than or equal to the interval width between the interior circle lead arbitrarily.
7. according to any described binary channels aerial coil in the claim 1 to 6, it is characterized in that the coil of forming described first conductor layer, second conductor layer all is spiral coils, the bore of described spiral coil is shaped as plane geometric shape arbitrarily.
8. according to any described binary channels aerial coil in the claim 1 to 6, it is characterized in that described coil comprises: etching metal coil or printed circuit cable coil.
9. a device is characterized in that, comprises as any described binary channels coil antenna in the claim 1 to 8.
10. device according to claim 9 is characterized in that, described device is smart card or read-write equipment for smart card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010286419XA CN101976762A (en) | 2010-09-19 | 2010-09-19 | Two-channel coil antenna and device applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010286419XA CN101976762A (en) | 2010-09-19 | 2010-09-19 | Two-channel coil antenna and device applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101976762A true CN101976762A (en) | 2011-02-16 |
Family
ID=43576621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010286419XA Pending CN101976762A (en) | 2010-09-19 | 2010-09-19 | Two-channel coil antenna and device applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101976762A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012034520A1 (en) * | 2010-09-14 | 2012-03-22 | 北京握奇数据系统有限公司 | Antenna and apparatus with said antenna |
| CN102881990A (en) * | 2012-10-12 | 2013-01-16 | 株洲南车时代电气股份有限公司 | Vehicle-mounted antenna |
| CN103515698A (en) * | 2012-06-28 | 2014-01-15 | 比亚迪股份有限公司 | NFC (Near Field Communication) antenna and electronic equipment |
| CN103681521A (en) * | 2012-09-25 | 2014-03-26 | 英飞凌科技股份有限公司 | Semiconductor housing for smart cards |
| CN103999287A (en) * | 2012-09-18 | 2014-08-20 | 松下电器产业株式会社 | Antenna, transmitting apparatus, receiving apparatus, three-dimensional integrated circuit, and non-contact communication system |
| WO2015035890A1 (en) * | 2013-09-13 | 2015-03-19 | Byd Company Limited | Method for manufacturing antenna, antenna and mobile terminal |
| CN106207421A (en) * | 2015-04-30 | 2016-12-07 | 智易科技股份有限公司 | Combined double-frequency printed antenna |
| CN106207478A (en) * | 2015-04-07 | 2016-12-07 | 智易科技股份有限公司 | Dual-frequency antenna constructed on two sides of substrate |
| CN108803169A (en) * | 2018-04-30 | 2018-11-13 | 友达光电股份有限公司 | Display device |
| CN118399063A (en) * | 2024-06-26 | 2024-07-26 | 金邦达有限公司 | NFC smart card and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1358342A (en) * | 2000-01-03 | 2002-07-10 | Ask股份有限公司 | Variable capacitance coupling antenna |
| CN1846330A (en) * | 2003-09-01 | 2006-10-11 | 索尼株式会社 | Magnetic core member, antenna module, and mobile communication terminal having the same |
| CN101447603A (en) * | 2008-12-19 | 2009-06-03 | 上海集成电路研发中心有限公司 | Antenna with progressive structure on RFID chip |
| CN101657938A (en) * | 2007-04-13 | 2010-02-24 | 株式会社村田制作所 | Magnetic field coupling type antenna, magnetic field coupling type antenna module and magnetic field coupling type antenna device, and these manufacture method |
| CN101794933A (en) * | 2009-01-30 | 2010-08-04 | Tdk株式会社 | Near type antenna and wireless communication machine |
-
2010
- 2010-09-19 CN CN201010286419XA patent/CN101976762A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1358342A (en) * | 2000-01-03 | 2002-07-10 | Ask股份有限公司 | Variable capacitance coupling antenna |
| CN1846330A (en) * | 2003-09-01 | 2006-10-11 | 索尼株式会社 | Magnetic core member, antenna module, and mobile communication terminal having the same |
| CN101657938A (en) * | 2007-04-13 | 2010-02-24 | 株式会社村田制作所 | Magnetic field coupling type antenna, magnetic field coupling type antenna module and magnetic field coupling type antenna device, and these manufacture method |
| CN101447603A (en) * | 2008-12-19 | 2009-06-03 | 上海集成电路研发中心有限公司 | Antenna with progressive structure on RFID chip |
| CN101794933A (en) * | 2009-01-30 | 2010-08-04 | Tdk株式会社 | Near type antenna and wireless communication machine |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012034520A1 (en) * | 2010-09-14 | 2012-03-22 | 北京握奇数据系统有限公司 | Antenna and apparatus with said antenna |
| CN103515698A (en) * | 2012-06-28 | 2014-01-15 | 比亚迪股份有限公司 | NFC (Near Field Communication) antenna and electronic equipment |
| CN103999287A (en) * | 2012-09-18 | 2014-08-20 | 松下电器产业株式会社 | Antenna, transmitting apparatus, receiving apparatus, three-dimensional integrated circuit, and non-contact communication system |
| CN103999287B (en) * | 2012-09-18 | 2016-11-16 | 松下知识产权经营株式会社 | Antenna, dispensing device, reception device, three dimensional integrated circuits and non-contact communication system |
| CN103681521A (en) * | 2012-09-25 | 2014-03-26 | 英飞凌科技股份有限公司 | Semiconductor housing for smart cards |
| CN103681521B (en) * | 2012-09-25 | 2017-01-04 | 英飞凌科技股份有限公司 | Quasiconductor housing for chip card |
| CN102881990A (en) * | 2012-10-12 | 2013-01-16 | 株洲南车时代电气股份有限公司 | Vehicle-mounted antenna |
| WO2015035890A1 (en) * | 2013-09-13 | 2015-03-19 | Byd Company Limited | Method for manufacturing antenna, antenna and mobile terminal |
| CN106207478A (en) * | 2015-04-07 | 2016-12-07 | 智易科技股份有限公司 | Dual-frequency antenna constructed on two sides of substrate |
| CN106207478B (en) * | 2015-04-07 | 2019-01-25 | 智易科技股份有限公司 | Dual-frequency antenna constructed on two sides of substrate |
| CN106207421A (en) * | 2015-04-30 | 2016-12-07 | 智易科技股份有限公司 | Combined double-frequency printed antenna |
| CN108803169A (en) * | 2018-04-30 | 2018-11-13 | 友达光电股份有限公司 | Display device |
| CN108803169B (en) * | 2018-04-30 | 2021-08-27 | 友达光电股份有限公司 | Display device |
| CN118399063A (en) * | 2024-06-26 | 2024-07-26 | 金邦达有限公司 | NFC smart card and working method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101976762A (en) | Two-channel coil antenna and device applying same | |
| CN106299706B (en) | Antenna assembly and wireless communication device | |
| EP2221920B1 (en) | Coil antenna and non-contact information medium | |
| US8231061B2 (en) | Contactless device with miniaturized antenna | |
| CN203850432U (en) | Antenna apparatus and communication terminal apparatus | |
| CN202395152U (en) | Antenna, electronic tag and electronic tag reader | |
| TW201101579A (en) | RFID antenna circuit | |
| CN103348561B (en) | The information transmission system | |
| CN105490009A (en) | Orthogonal winding type patch NFC antenna and antenna system | |
| CN104050499A (en) | High-frequency radio frequency identification label | |
| EP3091606B1 (en) | Antenna for wireless communications | |
| CN208539110U (en) | A kind of electronic equipment and its antenna assembly | |
| US20090295658A1 (en) | Loop antenna device with large opening area | |
| CN202121074U (en) | Antenna for radio frequency identification devices (RFID) readers and RFID reader | |
| CN105518932A (en) | Antenna device and electronic device | |
| CN103401074A (en) | Broadband circularly-polarized slot antenna applied to radio frequency identification system | |
| CN205452532U (en) | SMD NFC antenna of quadrature wire winding type and antenna system | |
| CN207250726U (en) | Antenna assembly and electronic equipment | |
| CN204651474U (en) | A kind of communication apparatus with metallic conductor and near field communication antenna thereof | |
| CN201868561U (en) | Antenna and device provided with same | |
| US20150278560A1 (en) | Apparatus for Transmission of Signals from a Metal Housing | |
| CN105977644A (en) | Three-dimensional winding type patch NFC antenna and antenna system | |
| CN205828672U (en) | The three-dimensional SMD NFC antenna of coiling and antenna system | |
| CN102013557A (en) | Antenna and device with same | |
| CN201868562U (en) | Antenna and device provided therewith |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110216 |