CN104868235A - Multilayer antenna structure and antenna - Google Patents
Multilayer antenna structure and antenna Download PDFInfo
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- CN104868235A CN104868235A CN201510170603.0A CN201510170603A CN104868235A CN 104868235 A CN104868235 A CN 104868235A CN 201510170603 A CN201510170603 A CN 201510170603A CN 104868235 A CN104868235 A CN 104868235A
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Abstract
The invention discloses a multilayer antenna structure and an antenna. The multilayer antenna structure comprises an upper layer dielectric substrate, a middle layer dielectric substrate, a lower layer dielectric substrate and a reflection plate which are sequentially arranged, wherein the upper surface of the upper layer dielectric substrate is provided with parasitic patches; the middle layer dielectric substrate and the upper layer dielectric substrate are arranged at an interval, the upper surface of the middle layer dielectric substrate is provided with radiation patches, and the lower surface of the middle layer dielectric substrate is integrally attached with a first metal grounding layer; the upper surface of the lower layer dielectric substrate is arranged in a mode of clinging to the lower surface of the middle layer dielectric substrate, the lower surface of the lower layer dielectric substrate is provided with a feed structure, the upper surface of the lower layer dielectric substrate is integrally attached with a second metal grounding layer, and the feed structure and the radiation patches are connected through metal probes; and the reflection plate is located at the lower surface side of the lower layer dielectric substrate, and an interval of the reflection plate and the lower layer dielectric substrate is provided with an air layer. The multilayer antenna structure disclosed by the invention solves a technical problem that the antenna cannot give consideration to both performance and thickness requirements.
Description
Technical field
The present invention relates to field of antenna, in particular to a kind of stacked antenna structure and antenna.
Background technology
In various wireless device, antenna is a very important part, and its major function is the transmitting and receiving to wireless signal.And along with the development of antenna technology, for the radiance of antenna itself, receptivity and attractive in appearancely had higher requirement.
5GHz frequency range international exempts from licensed band, this frequency range exists a large amount of wireless devices, and all kinds of wireless devices is due to the restriction of its size, can need to compress further the size of antenna, also needs to ensure good antenna performance simultaneously.But existing antenna, when thinner thickness, cannot reach good antenna performance (as relative bandwidth etc.); When antenna has higher performance, its thickness is often thicker.Therefore, existing antenna cannot meet the requirement of antenna performance when meeting thickness requirement, again cannot thickness thinning when meeting performance requirement.
The problem of performance and thickness requirement cannot be taken into account for antenna of the prior art, not yet propose effective solution at present.
Summary of the invention
Embodiments provide a kind of stacked antenna structure and antenna, at least to solve the technical problem that antenna cannot take into account performance and thickness requirement.
According to an aspect of the embodiment of the present invention, provide a kind of stacked antenna structure, comprise the upper layer medium substrate, interlayer substrate, layer dielectric substrate and the reflecting plate that set gradually, wherein: the upper surface of described upper layer medium substrate is provided with parasitic patch; Described interlayer substrate and described upper layer medium substrate interval are arranged, and the upper surface of described interlayer substrate is provided with radiation patch, and lower surface entirety is attached with the first metal ground plane; The upper surface of described layer dielectric substrate and the lower surface of described interlayer substrate are close to setting, the lower surface of described layer dielectric substrate is provided with feed structure, upper surface entirety is attached with the second metal ground plane, wherein, described feed structure is connected by metal probe with described radiation patch; And described reflecting plate is positioned at the lower face side of described layer dielectric substrate, there is air layer with described layer dielectric substrate interval.
Further, the thickness of the air layer between described reflecting plate and described layer dielectric substrate is 2.0-2.1mm.
Further, the electricity of described radiation patch is of a size of 0.389286-0.475794.
Further, the electricity of described parasitic patch is of a size of 0.3384225-0.4136275.
Further, air blanketing is provided with between described upper layer medium substrate and described interlayer substrate.
Further, the electricity of the height of described air blanketing is of a size of 0.023643027-0.028897033.
Further, described interlayer substrate is provided with the first non-metallic via hole, described layer dielectric substrate is provided with the second non-metallic via hole, the circle of described first non-metallic via hole and described second non-metallic via hole overlaps, and the first non-metallic via hole and described second non-metallic via hole one_to_one corresponding.
Further, described stacked antenna also comprises: metal probe, run through described first non-metallic via hole and described second non-metallic via hole, one end is welded with described radiation patch, one end is welded with described feed structure in addition, wherein, the length of described metal probe equals the thickness sum of described interlayer substrate and described layer dielectric substrate.
Further, described first metal ground plane is provided with the first circular boundary belt, described first circular boundary belt overlaps with the center of circle of the non-metallic via hole on described interlayer substrate, for preventing described first metal ground plane short circuit; Described second metal ground plane is provided with the second circular boundary belt, described second circular boundary belt overlaps with the center of circle of the non-metallic via hole on described layer dielectric substrate, for preventing described second metal ground plane short circuit.
Further, the center alignment of described radiation patch and described parasitic patch is arranged.
Further, described upper layer medium substrate, described interlayer substrate, described layer dielectric substrate are connected with screw rod by plastic nut with described reflecting plate.
Further, described reflecting plate is aluminium sheet.
According to the another aspect of the embodiment of the present invention, additionally provide a kind of stacked antenna, comprising: any one stacked antenna structure above-mentioned, it is characterized in that, the thickness of described stacked antenna is less than or equal to 7mm.
Further, the relative bandwidth of described stacked antenna is 12.5-13.5%.
In embodiments of the present invention, the upper layer medium substrate, interlayer substrate, layer dielectric substrate and the reflecting plate that set gradually is adopted, wherein: the upper surface of upper layer medium substrate is provided with parasitic patch; Interlayer substrate and upper layer medium substrate interval are arranged, and the upper surface of interlayer substrate is provided with radiation patch, and lower surface entirety is attached with the first metal ground plane; The upper surface of layer dielectric substrate and the lower surface of interlayer substrate are close to setting, the lower surface of layer dielectric substrate is provided with feed structure, upper surface entirety is attached with the second metal ground plane, and wherein, feed structure is connected by metal probe with radiation patch; And reflecting plate is positioned at the lower face side of layer dielectric substrate, air layer is had with layer dielectric substrate interval, by radiation patch and feed structure being separately positioned on two adjacent medium substrates, the impact of feed structure on radiation patch can be reduced, thus improve the cross-polarization performance of antenna.Simultaneously, the below of feed structure is provided with reflecting plate, antenna is made to obtain ratio better, and the interval between upper layer medium substrate and interlayer substrate is less than the interval of prior art, also the integral thickness of stacked antenna is just decreased, thus achieve the technique effect taking into account performance and thickness, and then solve the technical problem that antenna cannot take into account performance and thickness requirement.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the explosive view of the stacked antenna structure according to the embodiment of the present invention;
Fig. 2 is the vertical view of the stacked antenna according to the embodiment of the present invention;
Fig. 3 is the upward view of the stacked antenna according to the embodiment of the present invention;
Fig. 4 is the short brink view of the stacked antenna according to the embodiment of the present invention; And
Fig. 5 is the schematic diagram of the long side view of stacked antenna according to the embodiment of the present invention.
Embodiment
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in specification of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiments provide a kind of stacked antenna.The thickness of this stacked antenna is less than or equal to 7mm, and in the scope of 5125MHz-5850MHz, relative bandwidth is 13%, and prior art is when antenna thickness is less than or equal to 7mm, and relative bandwidth only has 5%; When reaching relative bandwidth 13%, thickness can be greater than 12mm.Visible, the stacked antenna that the embodiment of the present invention provides can meet thinner antenna thickness and larger relative bandwidth simultaneously, under the prerequisite of directional emission performance high-gain that ensure that antenna, reduces the thickness of antenna as much as possible, achieve built-in aerial frivolous, high performance demand.
The stacked antenna of the present embodiment comprises following stacked antenna structure, and Fig. 1 shows the explosive view of the stacked antenna structure of the present embodiment.As shown in Figure 1, this stacked antenna structure comprises the upper layer medium substrate 10, interlayer substrate 30, layer dielectric substrate 50 and the reflecting plate 70 that set gradually.The upper surface of upper layer medium substrate 10 is provided with parasitic patch 102; Interlayer substrate 30 and upper layer medium substrate 10 interval are arranged, and the upper surface of interlayer substrate 30 is provided with radiation patch 302, and lower surface entirety is attached with the first metal ground plane; The upper surface of layer dielectric substrate 50 and the lower surface of interlayer substrate 30 are close to setting, the lower surface of layer dielectric substrate 50 is provided with feed structure, upper surface entirety is attached with the second metal ground plane, wherein, feed structure (not shown) is connected by metal probe 40 with radiation patch 302; And reflecting plate 70 is positioned at the lower face side of layer dielectric substrate 50, and there is air layer 60 at layer dielectric substrate 50 interval.Interlayer substrate 30 and layer dielectric substrate 50 are provided with multiple non-metallic via hole, wherein, the second non-metallic via hole circular hole that the first non-metallic via hole that interlayer substrate 30 is arranged and layer dielectric substrate 50 are arranged overlaps, and the first non-metallic via hole and the second non-metallic via hole one_to_one corresponding.Metal probe 40 can pass the first non-metallic via hole of interlayer substrate 30 and the second non-metallic via hole of layer dielectric substrate 50, and one end of metal probe 40 is welded with the radiation patch on interlayer substrate 30, one end is welded with the feed structure on layer dielectric substrate 50 in addition, forms feed radiation path.Wherein, the length of metal probe 40 equals the thickness sum of interlayer substrate 30 and layer dielectric substrate 50, and the first metal ground plane of interlayer substrate 30 lower surface attachment and the second metal ground plane of underlying mechanisms substrate 50 upper surface attachment are close to.In order to prevent metal probe and the first metal ground plane and the second metal ground plane short circuit; first metal ground plane and the second metal ground plane arrange circular boundary belt; isolating metal probe and metal ground plane, make metal probe avoid and the first metal ground plane and the second metal ground plane short circuit when passing the first non-metallic via hole and the second non-metallic via hole.
Because radiation patch 302 and feed structure are separately positioned on two adjacent medium substrates, the impact of feed structure on radiation patch can be reduced, thus improve the cross-polarization performance of antenna.Simultaneously, the below of feed structure is provided with reflecting plate 70, and this reflecting plate 70 can be aluminium sheet, has air layer between reflecting plate 70 and layer dielectric substrate 50, the thickness of the air layer between reflecting plate 70 and layer dielectric substrate is 2.0-2.1mm, makes antenna obtain ratio better.The thickness of this air layer of prior art is generally 1/4th of wavelength, is of a size of 9.5mm, The present invention reduces the integral thickness of stacked antenna as seen in 5GHz frequency range.
Alternatively, upper layer medium substrate 10, interlayer substrate 30, layer dielectric substrate 50 are connected with screw rod by plastic nut with reflecting plate 70.Be provided with air blanketing 20 between upper layer medium substrate 10 and interlayer substrate 30, alternatively, the electric size range of the thickness of this air blanketing is 0.023643027-0.028897033.Preferably, the electricity of the thickness of this air blanketing is of a size of 0.02627003.
Alternatively, upper layer medium substrate 10 is provided with one or more parasitic patch 102, parasitic patch 102 is square; Interlayer substrate 30 is provided with one or more radiation patch 302, and radiation patch 302 is also square, and parasitic patch 102 and radiation patch 302 one_to_one corresponding are arranged, and the alignment of the center of radiation patch 302 and parasitic patch 102 is arranged.
Alternatively, the electricity of radiation patch is of a size of 0.389286-0.475794.Preferably, the electricity of radiation patch 302 is of a size of 0.43254.
Alternatively, the electricity of parasitic patch is of a size of 0.3384225-0.4136275.Preferably, the electricity of parasitic patch 102 is of a size of 0.376025.
Fig. 2 is the vertical view of the stacked antenna according to the embodiment of the present invention.Fig. 2 shows the plastic screw 80 of the stacked antenna of the embodiment of the present invention, parasitic patch 102 and reflecting plate 70.This stacked antenna and the outer cover installing this antenna can be fixed by the installing hole (shown in Fig. 2 white circular hole) be on reflecting plate 70.
Fig. 3 is the upward view of the stacked antenna according to the embodiment of the present invention.This reflecting plate 70 is provided with wiring hole 90, and one end of this wiring hole 90 is connected with feed structure, and one end can connect other equipment in addition.
Fig. 4 is the short brink view of the stacked antenna according to the embodiment of the present invention.This resolution chart is the resolution chart with the elevation angle, shows the parasitic patch of four shown in Fig. 1 102, radiation patch 302.The electric size of radiation patch 302 is slightly larger than the electric size of parasitic patch 102, and radiation patch 302 is alignd with the center of parasitic patch 102.Between upper layer medium substrate 10 and interlayer substrate 30, there is air blanketing 20, between layer dielectric substrate 50 and reflecting plate 70, be provided with air layer 60, have plastic screw 80 to be fixedly connected with reflecting plate by multiple medium substrate, form stacked antenna structure.Simultaneously, the whole interior of upper surface on the lower surface and layer dielectric substrate 50 of interlayer substrate 30 is all attached with metal ground plane 40, by metal probe (Fig. 4 is not shown), interlayer substrate 30 and layer dielectric substrate 50 are coupled together, metallic substrate layer on two medium substrates is close to, and by metal probe connect on interlayer substrate 30 radiation patch 302 and layer dielectric substrate 50 on feed structure, form feed radiation path.The parasitic patch 102 that upper layer medium substrate 10 is arranged can narrow down to 1mm with the distance of radome (not shown), can reduce the volume of the equipment installing this stacked antenna.
Fig. 5 is the schematic diagram of the long side view of stacked antenna according to the embodiment of the present invention.Fig. 5 is the schematic diagram of the end view of the stacked antenna corresponding with Fig. 1, and in order to the long side view of clear display stacked antenna, Fig. 5 only schematically illustrates the structure of two parasitic patch.It should be noted that, the stacked antenna in the present embodiment can comprise one or more parasitic patch, and accordingly, this stacked antenna can comprise one or more radiation patch.
The antenna of the embodiment of the present invention achieves low section characteristic, and obtain the working band of 12.5-13.5% in 5GHz frequency range while, cross polarization discrimination is >32dB, is greater than common engineering and requires 15dB; Interport isolation is less than-35dB, and usual engine request is-30dB; The front and back ratio of the present embodiment antenna is greater than 16dB, and gain is 13dB.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (14)
1. a stacked antenna structure, is characterized in that, comprises the upper layer medium substrate, interlayer substrate, layer dielectric substrate and the reflecting plate that set gradually, wherein:
The upper surface of described upper layer medium substrate is provided with parasitic patch;
Described interlayer substrate and described upper layer medium substrate interval are arranged, and the upper surface of described interlayer substrate is provided with radiation patch, and lower surface entirety is attached with the first metal ground plane;
The upper surface of described layer dielectric substrate and the lower surface of described interlayer substrate are close to setting, the lower surface of described layer dielectric substrate is provided with feed structure, upper surface entirety is attached with the second metal ground plane, wherein, described feed structure is connected by metal probe with described radiation patch; And
Described reflecting plate is positioned at the lower face side of described layer dielectric substrate, has air layer with described layer dielectric substrate interval.
2. stacked antenna structure according to claim 1, is characterized in that, the thickness of the air layer between described reflecting plate and described layer dielectric substrate is 2.0-2.1mm.
3. stacked antenna structure according to claim 1, is characterized in that, the electricity of described radiation patch is of a size of 0.389286-0.475794.
4. stacked antenna structure according to claim 1, is characterized in that, the electricity of described parasitic patch is of a size of 0.3384225-0.4136275.
5. stacked antenna structure according to claim 1, is characterized in that, is provided with air blanketing between described upper layer medium substrate and described interlayer substrate.
6. stacked antenna structure according to claim 5, is characterized in that, the electricity of the height of described air blanketing is of a size of 0.023643027-0.028897033.
7. stacked antenna structure according to claim 1, it is characterized in that, described interlayer substrate is provided with the first non-metallic via hole, described layer dielectric substrate is provided with the second non-metallic via hole, the circle of described first non-metallic via hole and described second non-metallic via hole overlaps, and the first non-metallic via hole and described second non-metallic via hole one_to_one corresponding.
8. stacked antenna structure according to claim 7, is characterized in that, described stacked antenna also comprises:
Metal probe, run through described first non-metallic via hole and described second non-metallic via hole, one end is welded with described radiation patch, one end is welded with described feed structure in addition, wherein, the length of described metal probe equals the thickness sum of described interlayer substrate and described layer dielectric substrate.
9. the stacked antenna structure according to claim 7 or 8, it is characterized in that, described first metal ground plane is provided with the first circular boundary belt, described first circular boundary belt overlaps with the center of circle of the non-metallic via hole on described interlayer substrate, for preventing described first metal ground plane short circuit; Described second metal ground plane is provided with the second circular boundary belt, described second circular boundary belt overlaps with the center of circle of the non-metallic via hole on described layer dielectric substrate, for preventing described second metal ground plane short circuit.
10. stacked antenna structure according to claim 1, is characterized in that, the center alignment of described radiation patch and described parasitic patch is arranged.
11. stacked antenna structures according to claim 1, is characterized in that, described upper layer medium substrate, described interlayer substrate, described layer dielectric substrate are connected with screw rod by plastic nut with described reflecting plate.
12. stacked antenna structures according to claim 1, is characterized in that, described reflecting plate is aluminium sheet.
13. 1 kinds of stacked antennas, comprise the stacked antenna structure in claim 1 to 12 described in any one, it is characterized in that, the thickness of described stacked antenna is less than or equal to 7mm.
14. stacked antennas according to claim 13, is characterized in that, the relative bandwidth of described stacked antenna is 12.5-13.5%.
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| CN201510170603.0A CN104868235B (en) | 2015-04-10 | 2015-04-10 | Stacked antenna structure and antenna |
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| CN201510170603.0A CN104868235B (en) | 2015-04-10 | 2015-04-10 | Stacked antenna structure and antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252860A (en) * | 2016-08-31 | 2016-12-21 | 重庆大学 | The multi-layer PCB little Huygens's source antenna of electricity |
| CN106972270A (en) * | 2016-01-14 | 2017-07-21 | 北京佰才邦技术有限公司 | Multi-beam perimeter array antenna and phase distribution system of selection |
| CN111725624A (en) * | 2019-03-20 | 2020-09-29 | 东友精细化工有限公司 | Antenna laminate and image display device including the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280718A (en) * | 2011-04-29 | 2011-12-14 | 上海交通大学 | Ku waveband low-profile dual-frequency dual-polarization array antenna |
| CN203733946U (en) * | 2014-01-20 | 2014-07-23 | 苏州市吴通天线有限公司 | High-gain dual polarized antenna |
-
2015
- 2015-04-10 CN CN201510170603.0A patent/CN104868235B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280718A (en) * | 2011-04-29 | 2011-12-14 | 上海交通大学 | Ku waveband low-profile dual-frequency dual-polarization array antenna |
| CN203733946U (en) * | 2014-01-20 | 2014-07-23 | 苏州市吴通天线有限公司 | High-gain dual polarized antenna |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972270A (en) * | 2016-01-14 | 2017-07-21 | 北京佰才邦技术有限公司 | Multi-beam perimeter array antenna and phase distribution system of selection |
| CN106252860A (en) * | 2016-08-31 | 2016-12-21 | 重庆大学 | The multi-layer PCB little Huygens's source antenna of electricity |
| CN111725624A (en) * | 2019-03-20 | 2020-09-29 | 东友精细化工有限公司 | Antenna laminate and image display device including the same |
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| Publication number | Publication date |
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| CN104868235B (en) | 2018-01-02 |
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