CN110829015A - Layered strip line antenna - Google Patents
Layered strip line antenna Download PDFInfo
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- CN110829015A CN110829015A CN201911183017.4A CN201911183017A CN110829015A CN 110829015 A CN110829015 A CN 110829015A CN 201911183017 A CN201911183017 A CN 201911183017A CN 110829015 A CN110829015 A CN 110829015A
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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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- 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
- H01Q9/0485—Dielectric resonator antennas
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Abstract
The present invention provides a layered stripline antenna, comprising: the antenna is provided with two antenna arms, and the antenna arms are connected with the second resonant ring; the coaxial feed structure penetrates through the first dielectric layer, the first metal grounding layer and the second dielectric layer, the slot is positioned on the second metal grounding layer, and the radiation patch is positioned on the fifth dielectric layer; the coaxial feed structure is connected with the first resonant ring and is used for transmitting signals to the first resonant ring; the first resonant ring and the second resonant ring are coupled and arranged, and are used for transmitting signals to the second resonant ring and the antenna arm through the coupling effect with the second resonant ring; the antenna arm transmits signals to the radiation patch through the slot; the radiation patch is used for radiating out signals, so that a filtering function can be realized through the coupling effect between the first resonant ring and the second resonant ring, and out-of-band rejection characteristics are generated.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a layered stripline antenna.
Background
The stripline antenna has the advantages of small volume, light weight, low profile, conformality and the like, and is widely applied to the fields of radar, communication and the like. However, the conventional stripline antenna does not have a filtering function, has poor out-of-band rejection, and cannot meet the increasingly high requirements in the fields of radar and communication.
Disclosure of Invention
In view of this, the present invention provides a layered stripline antenna to solve the problems of the conventional stripline antenna structure that it has no filtering function and has poor out-of-band rejection.
In order to achieve the purpose, the invention provides the following technical scheme:
a layered stripline antenna structure comprising:
the first dielectric layer, the first metal grounding layer, the second dielectric layer, the third dielectric layer, the fourth dielectric layer, the second metal grounding layer and the fifth dielectric layer are sequentially arranged from bottom to top in a laminated manner;
the antenna is provided with two antenna arms, and the antenna arms are connected with the second resonant ring;
the coaxial feed structure penetrates through the first dielectric layer, the first metal grounding layer and the second dielectric layer, the slot is positioned on the second metal grounding layer, and the radiation patch is positioned on the fifth dielectric layer;
the coaxial feed structure is connected with the first resonant ring and used for transmitting signals to the first resonant ring;
the first resonant ring and the second resonant ring are coupled and arranged, and are used for transmitting the signal to the second resonant ring and the antenna arm through the coupling effect with the second resonant ring;
the antenna arm transmits the signal to the radiating patch through the slot;
the radiation patch is used for radiating the signal.
Optionally, the first resonant ring and the second resonant ring are U-shaped structures;
in the direction perpendicular to the dielectric layer, the projection of the first resonant ring and the projection of the second resonant ring are symmetrically arranged, and the opening of the first resonant ring faces the opening of the second resonant ring.
Optionally, distances from the coaxial feeding structure to two ends of the opening of the first resonant ring are unequal, so that a signal transmitted to the antenna arm is a differential signal.
Optionally, the two antenna arms are symmetrically arranged.
Optionally, the projection of the first resonant ring and the projection of the second resonant ring are symmetrically arranged along a first direction, the two antenna arms are symmetrically arranged along a second direction, and the first direction is perpendicular to the second direction.
Optionally, the antenna further comprises a plurality of metalized vias, the metalized vias communicate with the first metal ground layer and the second metal ground layer, and the plurality of metalized vias are distributed around the resonant ring, the slot, and the radiating patch.
Compared with the prior art, the technical scheme provided by the invention has the following advantages:
according to the layered stripline antenna provided by the invention, after the signal is transmitted to the first resonant ring through the coaxial feed structure, the first resonant ring and the second resonant ring are coupled, so that the signal can be transmitted to the antenna arm and the radiation patch through the coupling effect between the first resonant ring and the second resonant ring to be radiated, and the filtering function can be realized through the coupling effect between the first resonant ring and the second resonant ring to generate out-of-band rejection characteristics.
In addition, because the first resonance ring and the second resonance ring adopt the layered structure design, the overhigh requirement on the processing precision due to the undersize distance between the two resonance rings in the same plane is avoided, namely, the first resonance ring and the second resonance ring adopt the layered structure design, the error influence brought by the processing precision can be reduced to the maximum extent, especially the challenge on the processing precision due to the undersize size of the millimeter wave antenna is provided, and the realization of actual processing is facilitated. In addition, the layered stripline antenna provided by the invention improves the stability and reliability of an antenna radiation pattern through differential characteristic design.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structure diagram of a layered stripline antenna according to an embodiment of the present invention;
fig. 2 is a schematic top view of a layered stripline antenna according to an embodiment of the present invention;
fig. 3 is a schematic oblique view of a layered stripline antenna according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the above is the core idea of the present invention, and the above objects, features and advantages of the present invention can be more clearly understood. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a layered stripline antenna, and optionally, the stripline antenna in the embodiment of the present invention is a millimeter wave antenna applied to a 5G base station, as shown in fig. 1 to 3, the layered stripline antenna includes a first dielectric layer 1, a first metal ground layer 2, a second dielectric layer 3, a third dielectric layer 4, a fourth dielectric layer 5, a second metal ground layer 6, and a fifth dielectric layer 7, which are sequentially stacked from bottom to top.
Optionally, the first dielectric layer 1 is a dielectric TLY-5, the second dielectric layer 3 is a dielectric Rogers4450F, the third dielectric layer 4 is a dielectric Rogers4350B, the fourth dielectric layer 5 is a dielectric Rogers4450F, and the fifth dielectric layer 7 is a dielectric TLY-5. The first metal ground layer 2 and the second metal ground layer 6 are metalized ground planes.
The layered stripline antenna provided by the embodiment of the invention further comprises a first resonant ring 8 positioned in the second dielectric layer 3, a second resonant ring 9 positioned in the fourth dielectric layer 5 and an antenna, wherein the antenna is provided with two antenna arms 10, and the antenna arms 10 are connected with the second resonant ring 9; a coaxial feed structure 11 penetrating through the first dielectric layer 1, the first metal ground layer 2 and the second dielectric layer 3, a slot 12 on the second metal ground layer 6 and a radiation patch 13 on the fifth dielectric layer 7;
optionally, the antenna in the embodiment of the present invention has two antenna arms, and the two antenna arms are symmetrically disposed. The second metal ground layer 6 has two slots 12, and each slot 12 is disposed corresponding to one antenna arm 10. The slot 12 is a slot formed on the second metal ground layer 6 by etching or the like.
In the embodiment of the present invention, the coaxial feeding structure 11 is connected to the first resonant ring 8, and is configured to transmit a signal to the first resonant ring 8; the first resonant ring 8 and the second resonant ring 9 are coupled and arranged, and are used for transmitting signals to the second resonant ring 9 and an antenna arm 10 connected with the second resonant ring 9 through the coupling effect with the second resonant ring 9; the antenna arm 10 transmits a signal to the radiation patch 13 through the slot 12; the radiation patch 13 is used for radiating out the signal to form a wireless signal. The coaxial feed structure 11 is not only space-saving, but also more convenient to integrate with the active circuit and chip at the back end.
Because the first resonant ring 8 and the second resonant ring 9 have a coupling effect, a filtering function can be realized in the process of signal transmission, and an out-of-band rejection characteristic is generated. Moreover, the first resonant ring 8 and the second resonant ring 9 are located on different dielectric layers, that is, the two resonant rings adopt a layered structure design, so that an excessively high requirement on the processing precision due to an excessively small distance between the two resonant rings in the same plane is avoided, that is, the first resonant ring and the second resonant ring adopt a layered structure design, so that the error influence caused by the processing precision can be reduced to the greatest extent, especially, the challenge on the processing precision due to an excessively small size of the millimeter wave antenna is provided, and the realization of actual processing is facilitated.
Optionally, in the embodiment of the present invention, both the first resonant ring 8 and the second resonant ring 9 are U-shaped structures or concave structures, but the present invention is not limited thereto, and in other embodiments, both the first resonant ring 8 and the second resonant ring 9 may also be triangular or circular structures, etc.
Although the first resonant ring 8 and the second resonant ring 9 are located on different layers, in a direction perpendicular to the dielectric layer, a projection of the first resonant ring 8 and a projection of the second resonant ring 9 need to be symmetrically arranged, and an opening of the first resonant ring 8 faces an opening of the second resonant ring 9, so as to realize a coupling effect of the first resonant ring 8 and the second resonant ring 9.
Alternatively, the projection of the first resonant ring 8 and the projection of the second resonant ring 9 are symmetrically arranged along a first direction Y, and the two antenna arms 10 are symmetrically arranged along a second direction X, where the first direction Y is perpendicular to the second direction X. Of course, the invention is not limited thereto, and in other embodiments, the first direction may not be perpendicular to the second direction.
It should be noted that, as shown in fig. 2, the projection of the first resonant ring 8 and the projection of the second resonant ring 9 do not overlap in the direction perpendicular to the dielectric layer, however, the present invention is not limited thereto, and in other embodiments, the projection of the first resonant ring 8 and the projection of the second resonant ring 9 may partially overlap, and the specific situation may be designed according to actual needs or actual dimensions.
Optionally, in the embodiment of the present invention, as shown in fig. 2, distances from the coaxial feeding structure 11 to two ends of the opening of the first resonant ring 8 are not equal, for example, a distance from the coaxial feeding structure 11 to one end a of the opening of the first resonant ring 8 is not equal to a distance from the coaxial feeding structure 11 to the other end B of the opening of the first resonant ring 8, so that a path difference is generated between a signal transmitted to the end a and a signal transmitted to the end B, so that a phase difference is generated between a signal transmitted to one antenna arm 10 and a signal transmitted to the other antenna arm 10, and a phase difference between signals on the two antenna arms 10 is 180 °, so that the signal transmitted to the antenna arms 10 is a differential signal, and thus, stability and reliability of an antenna radiation pattern can be improved through the differential signal.
The layered stripline antenna provided by the embodiment of the invention further comprises a plurality of metalized through holes 14, wherein the metalized through holes 14 are communicated with the first metal grounding layer 2 and the second metal grounding layer 6, and the metalized through holes 14 are distributed around the resonant rings 8 and 9, the slot 12 and the radiation patch 13. Since the metalized via 14 connects the first metal ground layer 2 and the second metal ground layer 6, interference of resonance can be avoided.
According to the layered stripline antenna provided by the embodiment of the invention, after the signal is transmitted to the first resonant ring through the coaxial feed structure, the first resonant ring and the second resonant ring are coupled, so that the signal can be transmitted to the antenna arm and the radiation patch through the coupling effect between the first resonant ring and the second resonant ring to be radiated, and the filtering function can be realized through the coupling effect between the first resonant ring and the second resonant ring to generate the out-of-band rejection characteristic.
In addition, the first resonant ring and the second resonant ring are positioned on different dielectric layers, namely the two resonant rings adopt a layered structure design, so that the over-high requirement on the processing precision due to the undersize distance between the two resonant rings when the two resonant rings are positioned on the same plane is avoided, and the realization of actual processing is facilitated. In addition, the layered stripline antenna provided by the embodiment of the invention improves the stability and reliability of an antenna radiation pattern through differential characteristic design.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A layered stripline antenna, comprising:
the first dielectric layer, the first metal grounding layer, the second dielectric layer, the third dielectric layer, the fourth dielectric layer, the second metal grounding layer and the fifth dielectric layer are sequentially arranged from bottom to top in a laminated manner;
the antenna is provided with two antenna arms, and the antenna arms are connected with the second resonant ring;
the coaxial feed structure penetrates through the first dielectric layer, the first metal grounding layer and the second dielectric layer, the slot is positioned on the second metal grounding layer, and the radiation patch is positioned on the fifth dielectric layer;
the coaxial feed structure is connected with the first resonant ring and used for transmitting signals to the first resonant ring;
the first resonant ring and the second resonant ring are coupled and arranged, and are used for transmitting the signal to the second resonant ring and the antenna arm through the coupling effect with the second resonant ring;
the antenna arm transmits the signal to the radiating patch through the slot;
the radiation patch is used for radiating the signal.
2. The layered stripline antenna of claim 1, wherein the first and second resonating rings are U-shaped structures;
in the direction perpendicular to the dielectric layer, the projection of the first resonant ring and the projection of the second resonant ring are symmetrically arranged, and the opening of the first resonant ring faces the opening of the second resonant ring.
3. The layered stripline antenna of claim 2, wherein the coaxial feed structure is at unequal distances from the first resonating ring opening such that the signal transmitted to the antenna arms is a differential signal.
4. The layered stripline antenna of claim 2, wherein the two antenna arms are symmetrically disposed.
5. The layered stripline antenna of claim 4, wherein the projection of the first resonating ring and the projection of the second resonating ring are symmetrically disposed along a first direction, and the two antenna arms are symmetrically disposed along a second direction, the first direction being perpendicular to the second direction.
6. The layered stripline antenna of claim 1, further comprising a plurality of metalized vias that connect the first and second metal ground layers and are distributed around the resonating ring, the slot, and the radiating patch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911183017.4A CN110829015A (en) | 2019-11-27 | 2019-11-27 | Layered strip line antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911183017.4A CN110829015A (en) | 2019-11-27 | 2019-11-27 | Layered strip line antenna |
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| Publication Number | Publication Date |
|---|---|
| CN110829015A true CN110829015A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911183017.4A Pending CN110829015A (en) | 2019-11-27 | 2019-11-27 | Layered strip line antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022226918A1 (en) * | 2021-04-29 | 2022-11-03 | 京东方科技集团股份有限公司 | Antenna and manufacturing method therefor, and antenna system |
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| CN108172988A (en) * | 2017-12-12 | 2018-06-15 | 南京理工大学 | A kind of Ultrawide-band trap antenna |
| CN109037922A (en) * | 2018-06-14 | 2018-12-18 | 杭州电子科技大学 | The difference micro-strip filter antenna of balun filter feed |
| US10211541B2 (en) * | 2016-11-02 | 2019-02-19 | Kabushiki Kaisha Toshiba | Antenna device |
| CN109411883A (en) * | 2017-08-15 | 2019-03-01 | 启碁科技股份有限公司 | Antenna structure |
| US20190298234A1 (en) * | 2018-04-03 | 2019-10-03 | Trustees Of Tufts College | System and Method of Using a Tooth Antenna |
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2019
- 2019-11-27 CN CN201911183017.4A patent/CN110829015A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6597259B1 (en) * | 2000-01-11 | 2003-07-22 | James Michael Peters | Selective laminated filter structures and antenna duplexer using same |
| US10211541B2 (en) * | 2016-11-02 | 2019-02-19 | Kabushiki Kaisha Toshiba | Antenna device |
| CN109411883A (en) * | 2017-08-15 | 2019-03-01 | 启碁科技股份有限公司 | Antenna structure |
| CN108172988A (en) * | 2017-12-12 | 2018-06-15 | 南京理工大学 | A kind of Ultrawide-band trap antenna |
| US20190298234A1 (en) * | 2018-04-03 | 2019-10-03 | Trustees Of Tufts College | System and Method of Using a Tooth Antenna |
| CN109037922A (en) * | 2018-06-14 | 2018-12-18 | 杭州电子科技大学 | The difference micro-strip filter antenna of balun filter feed |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022226918A1 (en) * | 2021-04-29 | 2022-11-03 | 京东方科技集团股份有限公司 | Antenna and manufacturing method therefor, and antenna system |
| CN115552728A (en) * | 2021-04-29 | 2022-12-30 | 京东方科技集团股份有限公司 | Antenna, preparation method thereof and antenna system |
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Application publication date: 20200221 |