CN102007643A - Planar antenna - Google Patents
Planar antenna Download PDFInfo
- Publication number
- CN102007643A CN102007643A CN2008801287158A CN200880128715A CN102007643A CN 102007643 A CN102007643 A CN 102007643A CN 2008801287158 A CN2008801287158 A CN 2008801287158A CN 200880128715 A CN200880128715 A CN 200880128715A CN 102007643 A CN102007643 A CN 102007643A
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- China
- Prior art keywords
- antenna
- mentioned
- basis material
- stem portion
- plane antenna
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- 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.)
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Classifications
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- 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
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- 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
- H01Q1/1271—Supports; Mounting means for mounting on windscreens
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/25—Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
- H01Q5/385—Two or more parasitic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
- H01Q9/285—Planar dipole
Abstract
An antenna is constituted by providing a pair of elements (conductive wires) made of metal or the like on a surface of a planar base made of a dielectric. This antenna constitutes a so-called dipole antenna with the elements. Each element has a trunk part extending in the length direction of the base and a plurality of branch parts branched from the trunk part. With such structure, an effective path length can be gained as the element in a small space and the antenna itself can be downsized.
Description
Technical field
The present invention relates to plane dipole antenna.
Background technology
The film like antenna that sticks on the enterprising enforcement usefulness such as front windshield of vehicle is known to the public.In patent documentation 1 and 2, record the example of such film like antenna.
Film like antenna as described above normally will be formed with the structure of sheet adhering on front windshield of element (elemental), therefore just can not utilize once more after pasting once.Therefore, after the stickup once of film like antenna, just can not change paste position.In addition, above-mentioned film like antenna has elongated chip shape, and therefore, sticking operation may not be easy.
In addition, the antenna of the formula noumenally (body earth type) of record need be connected ground wire in the patent documentation 1 with metal body, therefore, has restricted the installation site.
Patent documentation 1: Japanese kokai publication hei 5-283921 communique
Patent documentation 2: TOHKEMY 2007-194844 communique
Summary of the invention
As problem to be solved by this invention, enumerate above content as an example.Problem to be solved by this invention is to provide a kind of plane antenna, thereby its shape is little and simply be easy to carry out sticking operation, and can utilize once more.
The invention that technical scheme 1 is put down in writing is plane antenna, has: the plane basis material that is made of dielectric; With a pair of element that is arranged on the above-mentioned basis material; Each said elements has: the stem portion of extending on the length direction of above-mentioned basis material; And from a plurality of branches of above-mentioned stem portion branch.
Description of drawings
Fig. 1 is the figure of structure of the antenna of expression first embodiment.
Fig. 2 is the figure of structure of the antenna of expression second embodiment.
Fig. 3 is the figure of cone-shaped of the antenna of explanation second embodiment.
Fig. 4 is the figure of structure of the antenna of expression the 3rd embodiment.
Fig. 5 is other the figure of structure of antenna of expression the 3rd embodiment.
Fig. 6 is other the figure of structure of antenna of expression the 3rd embodiment.
Fig. 7 is the figure of structure of the antenna of the various variation of expression.
Fig. 8 is the figure of the user mode of explanation antenna.
The explanation of symbol
1 basis material
5 protective layers
7 two-sided tapes
10～10g element
11～11g stem portion
12～12g branch
13 supply terminals
20 non-exciting elements
100～100g antenna
Embodiment
Of the present invention preferred embodiment in, plane antenna has: the plane basis material that is made of dielectric; With a pair of element that is arranged on the above-mentioned basis material; Each said elements has: stem portion, and it extends on the length direction of above-mentioned basis material; With a plurality of branches, it is from above-mentioned stem portion branch.
Above-mentioned antenna constitutes a pair of elements (lead) such as metal is set on a face of the plane basis material that is formed by dielectric.This antenna constitutes so-called dipole antenna by a pair of element.Each element has the stem portion of extending and from a plurality of branches of this stem portion branch on the length direction of basis material.By such structure, can utilize the actual active path length of little space acquisition, thereby can make antenna self miniaturization as elements act.
In a mode of above-mentioned plane antenna, it is roughly symmetry of center line that above-mentioned a plurality of branches are set to above-mentioned stem portion.In this mode, with the stem portion situation that the center only is formed on a side of stem portion than branch, can make as the electrical characteristics of antenna stable.In addition, " roughly symmetry " not only comprises the shape of symmetry, also comprises the mode that becomes the shape of crawling as described later on a part.
In other a mode of above-mentioned plane antenna, the part of above-mentioned a plurality of branches be shaped as the shape of crawling.
In other a mode of above-mentioned plane antenna, each said elements has supply terminals at an end of above-mentioned stem portion, and the distance of the above-mentioned supply terminals of above-mentioned a plurality of branches' distances is far away more, and its length is long more.In this mode, become cone-shaped by making each element, can enlarge frequency characteristic.
In other a mode of above-mentioned plane antenna, above-mentioned supply terminals is arranged on the position of middle position after end direction moves from the length direction of above-mentioned basis material.Thus, can guarantee the coupling of impedance, thus power supply efficiently.
A mode of other of above-mentioned plane antenna has non-exciting element on above-mentioned basis material, above-mentioned non-exciting element is arranged on the face opposite with the face that is provided with said elements.Other a mode has non-exciting element on above-mentioned basis material, above-mentioned non-exciting element is arranged on the face or other face identical with the face that is provided with said elements.In addition, other a mode has non-exciting element on above-mentioned basis material, above-mentioned non-exciting element be configured in not with the said elements position overlapped on.Thus, can utilize the resonance of non-exciting element side, enlarge the frequency band of antenna.In preferred example, above-mentioned non-exciting element is arranged on center from the length direction of above-mentioned basis material on the position after the above-mentioned supply terminals side shifting.
Embodiment
Below, with reference to description of drawings preferred embodiment of the present invention.
First embodiment
Fig. 1 represents the structure of the plane antenna 100 (below, only be called " antenna ") of the first embodiment of the present invention.Fig. 1 (a) is the vertical view on the surface of antenna 100, and Fig. 1 (b) is the end view of antenna 100, and Fig. 1 (c) is the vertical view at the back side of antenna 100.
A pair of element (lead) 10 on the basis material 1 that antenna 100 has plane (thin tabular) and the face of a side that is arranged on basis material 1.Basis material 1 is formed by for example dielectric such as plastic film, rubber, but can use the material (pottery etc.) with rigidity.A pair of element 10 constitutes dipole antenna.
Each element 10 has: stem portion 11, and it is formed by metals such as silver, copper, extends on the length direction of basis material 1; A plurality of branches 12, it is to extending with stem portion 11 approximate vertical direction branches; Supply terminals 13, it is arranged on an end of stem portion 11.Like this, each element 10 becomes the bellows-shaped of a plurality of branches 12 and stem portion 11 mutual approximate vertical or as the shape of fish-bone (below, be called " ripple struction ").By adopting ripple struction, can obtain the actual active path length of element 10 with little space, thereby can make the overall dimensions miniaturization of antenna 100.That is,, can make element 10 and 1 long linear device equivalence electrically by adopting ripple struction.By making antenna 100 miniaturizations, can reduce to be mounted the occupied area of the antenna 100 in the portion.Especially under the situation of the mounted antennas such as front windshield 100 of vehicle, said structure is easy on the part beyond the visual field that installation site with antenna 100 is configured in the driver, and effective especially.
In addition, in first embodiment, be not provided with any parts at the back side of basis material 1 (with the face of the face opposition side that is provided with element 10).
In a preferred example of the present invention, antenna 100 is of a size of, length L=150mm, width W=20mm, thickness H=5mm.Such at above-mentioned patent documentation 2, when constituting the antenna that electrical characteristics are identical therewith with the antenna of element with wire, it is of a size of, for example, length L=235mm, width W=20mm is about thickness H=1mm.That is,,, the length of antenna integral body is shortened significantly by adopting ripple struction according to the present invention.
In addition, in antenna 100, a pair of supply terminals 13 is arranged on the position of middle position after move the end of basis material 1 from the length direction of basis material 1.Thus, can make impedance matching, thereby can efficiently electric energy be supplied with to antenna 100 from supply terminals.
In addition, a plurality of branches 12 can only be arranged on a side of stem portion 11, but in first embodiment, as shown in the figure, it is the central shaft left-right symmetric that a plurality of branches 12 are set to stem portion 11.Like this, compare with the situation that only a plurality of branches 12 is arranged on a side of stem portion 11, being set to a plurality of branches 12 with stem portion 11 is the central shaft left-right symmetric, can make the electrical characteristics stabilisation of antenna.
Second embodiment
Fig. 2 represents the structure of the antenna 100a of the second embodiment of the present invention.Fig. 2 (a) is the vertical view on the surface of antenna 100a, and Fig. 2 (b) is the end view of antenna 100a, and Fig. 1 (c) is the vertical view at the back side of antenna 100a.
As shown in the figure, the antenna 100a of second embodiment is identical with the antenna 100 of first embodiment, constitutes a pair of element 10a is set on the basis material 1 that is formed by dielectric.Wherein, in the antenna 100a of second embodiment, the shape of each element 10a is different with the antenna 100 of first embodiment.The antenna 100a of second embodiment is except the shape of element 10a, and other structures are identical with the antenna 100 of first embodiment.
As shown in the figure, element 10a has: stem portion 11; With the upwardly extending a plurality of 12a of branch in the side of stem portion 11 approximate vertical; Supply terminals 13.At this, that the element 10a of second execution mode has is far away more apart from supply terminals 13, the long more cone-shaped of length of the 12a of branch.That is, near the 12a of branch that is positioned at the supply terminals 13, its length on the direction vertical with stem portion 11 is short, and away from the locational 12a of branch of supply terminals 13, its length on the direction vertical with stem portion 11 is long more.
Like this, be cone-shaped by making element 10a, can enlarge the frequency band of antenna 100a.Fig. 3 (a) illustrates its situation.Fig. 3 (a) illustrate as element first embodiment be non-cone-shaped antenna frequency characteristic 51 and as second embodiment element be the frequency characteristic 52 of the antenna of cone-shaped.By making element become cone-shaped, can make the antenna performance broad in band.
In addition, shown in Fig. 3 (b), according to characteristic as the target of antenna 100a, the taper angle theta (θ 1 and θ 2) of the degree of the cone-shaped of decision expression element 100a.
About part beyond above-mentioned, the antenna 100a of second embodiment is identical with the antenna 100 of first embodiment.That is,, can make the antenna integral miniaturization by adopting ripple struction.In addition, it is the central shaft left-right symmetric that preferred a plurality of branches 12 are set to stem portion 11, but a plurality of branches 12 can only be arranged on a side of stem portion 11.
The 3rd embodiment
Fig. 4 represents the antenna 100c of the third embodiment of the present invention, the flat shape of 100d.In the 3rd embodiment,, on the promptly opposite face, the non-exciting element (non-power supply component) 20 more than 1 is set with the face that is formed with element 10 at the back side of basis material 1.In the example of Fig. 4 (c), be provided with 2 non-exciting elements 20.
Specifically, shown in Fig. 4 (a), the shape on the surface of antenna 100c is identical with the antenna 100 of first embodiment, but shown in Fig. 4 (c), is provided with non-exciting element 20 overleaf.The frequency characteristic of representing antenna 100c with the characteristic 61 of Fig. 3 (c).
Equally, shown in Fig. 4 (b), the shape on the surface of antenna 100d is identical with the antenna 100a of second embodiment, but shown in Fig. 4 (c), is provided with exciting element 20 overleaf.The frequency characteristic of representing antenna 100d with the characteristic 62 of Fig. 3 (c).
Like this, non-exciting element 20 is set, can enlarges the frequency characteristic of antenna by the back side at basis material 1.Specifically, the resonance that element produced of the face side by antenna 100c, 100d and the non-exciting element of rear side produce a plurality of resonance that resonance produces, and can make the antenna broad in band.
In addition, the position of the non-exciting element 20 on the back side of preferred substrate material 1 is the position of middle position after supply terminals 13 side shiftings from the length direction of basis material 1.In addition, further the non-exciting element 20 on the length direction of preferred substrate material 1 with pass, the position between the supply terminals 13 is, the allocation position of supply terminals 13 is positioned at the configuration relation on the part of allocation position of non-at least exciting element 20.In the example of Fig. 4 (c), non-exciting element 20 is arranged on the position of middle position after move the end of a side that is provided with supply terminals 13 from the length direction of basis material 1.
In addition, non-exciting element 20 is not limited to this configuration.For example, shown in Fig. 5 (a), non-exciting element 20 can be configured on the identical face of the face that disposed with element.At this moment, shown in Fig. 5 (b), also can dispose non-exciting element 20 along the cone-shaped of element 10.
Further, shown in Fig. 6 (a) and Fig. 6 (b), non-exciting element 20 can be configured in the side of basis material 1.Fig. 6 (a) is the vertical view of the antenna 100j when non-exciting element 20 is configured in the two sides of basis material 1, and Fig. 6 (b) is the end view of the antenna 100j when observing on arrow 72 directions of Fig. 6 (a).In addition, in the time of on the side that non-exciting element 20 is configured in basis material 1,1 non-exciting element 20 can only be set on a side.
Variation
The various variation of antenna of the present invention then, are described.
The flat shape of the antenna 100e of 1 variation of Fig. 7 (a) expression.As shown in the figure, the interval of the 12e of branch of the element 10e of formation antenna 100e can be non-constant.That is, a plurality of 12e of branch can not be set at uniformly-spaced.In the example of Fig. 7 (a), the 12e of branch is positioned at devices spaced apart p1 part and devices spaced apart p2 (＜p1) part.
Fig. 7 (b) represents the flat shape of antenna 100f of other variation.As shown in the figure, the width of the 12f of branch on the length direction of basis material 1 can be non-constant.In the example of Fig. 7 (b), the width W 1 of the 12f of branch in the zone 61 is less than the width W 2 of the 12f of branch in the zone 62.
Fig. 7 (c) further represents the flat shape of antenna 100g of other variation.As shown in the figure, can make the part of element 10g form the shape of crawling.In zone 64, stem portion 11g is positioned on the substantial middle on the Width of basis material 1, and in zone 63, alternately move on the Width of basis material 1 position of stem portion 11g, forms the what is called shape of crawling.In this Fig. 7 (c), element 10 does not become complete symmetry with respect to the center line by stem portion 11g, but " roughly symmetry " described in the present embodiment comprises that also so a part of position becomes the mode of the shape of crawling.
Make use-case
Then, illustrate embodiment antenna make use-case.Fig. 8 is the cutaway view that makes use-case of expression antenna.Each the above-mentioned embodiment and the antenna 100～100j of each variation are in use; go up on the two sides (surface and the back side) of basis material 1 protective layer 5 that is made of resin etc. is set, utilize the thin slice 7 of the two sides cementability of two-sided tape etc. that it is sticked in the portion of being mounted 70.The typical example that is mounted portion is the front windshield of vehicle etc.
Utilizability on the industry
The present invention can be used in the planar antenna that sticks on the section of being mounted and use. In preferred example, this planar antenna sticks on the enterprising enforcement usefulness such as the front windshield of vehicle.
Claims (9)
1. plane antenna is characterized in that having:
The plane basis material that forms by dielectric; With
Be arranged on a pair of element on the above-mentioned basis material,
Each said elements has: the stem portion of extending on the length direction of above-mentioned basis material; And from a plurality of branches of above-mentioned stem portion branch.
2. plane antenna according to claim 1 is characterized in that,
It is roughly symmetry of center line that above-mentioned a plurality of branch is set to above-mentioned stem portion.
3. plane antenna according to claim 2 is characterized in that,
The part of above-mentioned a plurality of branches be shaped as the shape of crawling.
4. according to each described plane antenna in the claim 1～3, it is characterized in that,
Each said elements has supply terminals at an end of above-mentioned stem portion,
The distance of the above-mentioned supply terminals of above-mentioned a plurality of branch's distances is far away more, and the length of above-mentioned branch is long more.
5. according to each described plane antenna in the claim 1～4, it is characterized in that,
Above-mentioned supply terminals is arranged on the position of middle position after end direction moves from the length direction of above-mentioned basis material.
6. according to each described plane antenna in the claim 1～5, it is characterized in that,
Have non-exciting element on above-mentioned basis material, above-mentioned non-exciting element is arranged on the face opposite with the face that is provided with said elements.
7. according to each described plane antenna in the claim 1～5, it is characterized in that,
Have non-exciting element on above-mentioned basis material, above-mentioned non-exciting element is arranged on the face or other face identical with the face that is provided with said elements.
8. according to each described plane antenna in the claim 1～5, it is characterized in that,
On above-mentioned basis material, have non-exciting element, above-mentioned non-exciting element be configured in not with the said elements position overlapped on.
9. according to each described plane antenna in the claim 6～8, it is characterized in that,
Above-mentioned non-exciting element is arranged on the position of center after above-mentioned supply terminals side shifting from the length direction of above-mentioned basis material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2008/057965 WO2009130781A1 (en) | 2008-04-24 | 2008-04-24 | Planar antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102007643A true CN102007643A (en) | 2011-04-06 |
Family
ID=41216530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801287158A Pending CN102007643A (en) | 2008-04-24 | 2008-04-24 | Planar antenna |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2009130781A1 (en) |
| CN (1) | CN102007643A (en) |
| WO (1) | WO2009130781A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828993A (en) * | 2019-11-08 | 2020-02-21 | 深圳市安拓浦科技有限公司 | Transparent film antenna and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88211608U (en) * | 1988-04-08 | 1988-12-28 | 龚成 | Plate type tv antenna |
| JP2005244778A (en) * | 2004-02-27 | 2005-09-08 | Sharp Corp | Miniaturized antenna and wireless tag provided with the same |
| CN101051705A (en) * | 2006-04-04 | 2007-10-10 | 黄启芳 | Crushed shape antenna |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1084212A (en) * | 1996-09-10 | 1998-03-31 | Nippon Mektron Ltd | Antenna having adhesive function |
| JP2005210456A (en) * | 2004-01-23 | 2005-08-04 | Ngk Spark Plug Co Ltd | Antenna adaptable to a plurality of frequency bands |
| CN101390253B (en) * | 2004-10-01 | 2013-02-27 | L.皮尔·德罗什蒙 | Ceramic antenna module and methods of manufacture thereof |
| JP2006140789A (en) * | 2004-11-12 | 2006-06-01 | Hitachi Cable Ltd | Invisible antenna |
| JP2008084307A (en) * | 2006-08-31 | 2008-04-10 | Semiconductor Energy Lab Co Ltd | Semiconductor device |
-
2008
- 2008-04-24 CN CN2008801287158A patent/CN102007643A/en active Pending
- 2008-04-24 JP JP2010509008A patent/JPWO2009130781A1/en active Pending
- 2008-04-24 WO PCT/JP2008/057965 patent/WO2009130781A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88211608U (en) * | 1988-04-08 | 1988-12-28 | 龚成 | Plate type tv antenna |
| JP2005244778A (en) * | 2004-02-27 | 2005-09-08 | Sharp Corp | Miniaturized antenna and wireless tag provided with the same |
| CN101051705A (en) * | 2006-04-04 | 2007-10-10 | 黄启芳 | Crushed shape antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2009130781A1 (en) | 2011-08-11 |
| WO2009130781A1 (en) | 2009-10-29 |
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Application publication date: 20110406 |