CN211150784U - Double-frequency directional antenna and communication equipment - Google Patents
Double-frequency directional antenna and communication equipment Download PDFInfo
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- CN211150784U CN211150784U CN202020134700.0U CN202020134700U CN211150784U CN 211150784 U CN211150784 U CN 211150784U CN 202020134700 U CN202020134700 U CN 202020134700U CN 211150784 U CN211150784 U CN 211150784U
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Abstract
The utility model relates to the technical field of wireless communication, and provides a dual-frequency directional antenna and communication equipment, wherein the dual-frequency directional antenna comprises a substrate and a radiation unit arranged on the substrate, the substrate is provided with a first surface and a second surface which are opposite, the radiation unit comprises two radiation patches which are respectively arranged on the first surface and the second surface, the radiation patch comprises a high-frequency vibrator arm and a low-frequency vibrator arm which are connected with each other, the high-frequency vibrator arm and the low-frequency vibrator arm are both of a bending structure, the dual-frequency directional antenna effectively reduces the surface space of the substrate occupied by the radiation unit by arranging the high-frequency oscillator arm and the low-frequency oscillator arm into the bending structure, therefore, the size of the dual-frequency directional antenna can be effectively reduced, the occupied space of the dual-frequency directional antenna in the communication equipment is reduced, and the miniaturization requirement of the communication equipment is favorably realized.
Description
Technical Field
The utility model relates to a wireless communication technology field especially provides a dual-frenquency directional aerial and communications facilities.
Background
With the rapid development of modern wireless communication technology, a communication system simultaneously operating in two or more frequency bands becomes an important direction for the development of wireless communication technology, and therefore, a dual-frequency directional antenna becomes a hot spot in recent years.
However, the conventional dual-band directional antenna generally has a large size, needs to occupy a large space in the communication device, and cannot meet the requirement of miniaturization of the communication device.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dual-frenquency directional aerial and communications facilities aims at solving the great technical problem of current dual-frenquency directional aerial size.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a dual-frenquency directional antenna, includes base plate, reflecting plate and locates radiating element on the base plate, the base plate has the first surface and the second surface that deviate from mutually, the reflecting plate with the first surface or the second surface interval sets up, radiating element is including locating respectively the first surface with two radiation patches of second surface, radiation patch includes interconnect's high frequency oscillator arm and low frequency oscillator arm, high frequency oscillator arm with low frequency oscillator arm is the structure of buckling.
The utility model provides a dual-frenquency directional aerial has following beneficial effect at least: the high-frequency oscillator arm and the low-frequency oscillator arm are arranged to be of bent structures, so that the surface space of the substrate occupied by the radiation unit is effectively reduced, the size of the dual-frequency directional antenna can be effectively reduced, the occupied space of the dual-frequency directional antenna in the communication equipment is reduced, and the miniaturization requirement of the communication equipment is favorably met.
In one embodiment, the high-frequency oscillator arm comprises a first high-frequency arm section and a second high-frequency arm section, wherein the first high-frequency arm section and the second high-frequency arm section are both of long strip structures, and the first high-frequency arm section and the second high-frequency arm section are connected with each other to form a right-angle structure; the low-frequency oscillator arm comprises a first low-frequency arm section, a second low-frequency arm section, a third low-frequency arm section and a fourth low-frequency arm section, wherein the first low-frequency arm section, the second low-frequency arm section and the fourth low-frequency arm section are both of long strip structures, the third low-frequency arm section is of a circular arc structure, the first low-frequency arm section is connected with the second low-frequency arm section to form a right-angle structure, and the third low-frequency arm section is connected between the second low-frequency arm section and the fourth low-frequency arm section.
In one embodiment, the dual-band directional antenna further includes a plurality of feeding units, and the plurality of radiating units are connected through the feeding units.
In one embodiment, the feeding unit includes two feeding lines respectively disposed on the first surface and the second surface, the feeding line on the first surface is used to connect the radiation patches on the first surface, and the feeding line on the second surface is used to connect the radiation patches on the second surface.
In one embodiment, the feeder line comprises a bus section and a plurality of connecting sections, each connecting section is correspondingly connected with each radiation patch, each connecting section comprises a first transformation section, a second transformation section and a third transformation section which are sequentially connected, one end of the first transformation section, which is far away from the second transformation section, is connected with the bus section, and one end of the third transformation section, which is far away from the second transformation section, is connected with the radiation patches.
In one embodiment, the plurality of radiation units are arranged in an array structure.
In one embodiment, the distance between the radiation unit and the edge of the substrate is greater than 0.5 mm.
In one embodiment, the radiation patches on the first surface and the radiation patches on the second surface are arranged symmetrically with respect to each other.
In one embodiment, the substrate is one of an FR-4 board, a PTFE board, and a CEM-1 board.
In order to achieve the above object, the present invention also provides a communication device, including the above dual-band directional antenna.
Since the communication device employs all embodiments of the dual-band directional antenna, at least all the advantages of the embodiments are achieved, and no further description is given here.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a dual-band directional antenna according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of the dual-band directional antenna shown in fig. 1;
fig. 3 is a schematic structural diagram of a radiating element in the dual-frequency directional antenna shown in fig. 1;
fig. 4 is a schematic structural diagram of a feeding unit in the dual-band directional antenna shown in fig. 1;
fig. 5 is a schematic diagram of S-parameters of the dual-band directional antenna shown in fig. 1 in a 2.4G frequency band;
fig. 6 is a schematic diagram of S parameters of the dual-band directional antenna shown in fig. 1 in a 5G frequency band;
fig. 7 is a schematic diagram of the maximum gain of the dual-band directional antenna shown in fig. 1 in the 2.4G frequency band;
fig. 8 is a schematic diagram of the maximum gain of the dual-band directional antenna shown in fig. 1 in the 5G frequency band.
Wherein, in the figures, the respective reference numerals:
10. the antenna comprises a substrate, 20, a radiating unit, 21, a radiating patch, 211, a high-frequency oscillator arm, 2111, a first high-frequency arm section, 2112, a second high-frequency arm section, 212, a low-frequency oscillator arm, 2121, a first low-frequency arm section, 2122, a second low-frequency arm section, 2123, a third low-frequency arm section, 2124, a fourth low-frequency arm section, 30, a feeding unit, 31, a bus section, 311, a feeding port, 32, a connecting section, 321, a first conversion section, 322, a second conversion section, 323, a third conversion section, 40 and a reflecting plate.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1 to 3, a dual-band directional antenna includes a substrate 10, a reflector 40, and a radiation unit 20 disposed on the substrate 10, where the substrate 10 has a first surface and a second surface facing away from each other, the reflector 40 is disposed at an interval with the first surface or the second surface, the radiation unit 20 includes two radiation patches 21 disposed on the first surface and the second surface, the radiation patches 21 include a high-frequency oscillator arm 211 and a low-frequency oscillator arm 212 connected to each other, and both the high-frequency oscillator arm 211 and the low-frequency oscillator arm 212 are of a bent structure.
According to the dual-frequency directional antenna, the high-frequency oscillator arm 211 and the low-frequency oscillator arm 212 are arranged to be of the bending structures, so that the surface space of the substrate 10 occupied by the radiation unit 20 is effectively reduced, the size of the dual-frequency directional antenna can be effectively reduced, the occupied space of the dual-frequency directional antenna in communication equipment is reduced, and the miniaturization requirement of the communication equipment is favorably met.
Specifically, the distance between the reflection plate 40 and the substrate 10 is one quarter of the operating wavelength, and preferably, the distance between the reflection plate 40 and the substrate 10 is selected to be 14.25 mm. Of course, the distance between the reflective plate 40 and the substrate 10 can be adjusted according to actual needs, and is not limited in detail.
In one embodiment, as shown in fig. 1 and 3, the high-frequency oscillator arm 211 includes a first high-frequency arm segment 2111 and a second high-frequency arm segment 2112, the first high-frequency arm segment 2111 and the second high-frequency arm segment 2112 are both long-strip structures, and the first high-frequency arm segment 2111 and the second high-frequency arm segment 2112 are connected to each other to form a right-angle structure; the low-frequency oscillator arm 212 includes a first low-frequency arm portion 2121, a second low-frequency arm portion 2122, a third low-frequency arm portion 2123, and a fourth low-frequency arm portion 2124, wherein the first low-frequency arm portion 2121, the second low-frequency arm portion 2122, and the fourth low-frequency arm portion 2124 are all long-strip structures, the third low-frequency arm portion 2123 is a circular arc structure, the first low-frequency arm portion 2121 and the second low-frequency arm portion 2122 are connected to each other to form a right-angle structure, and the third low-frequency arm portion 2123 is connected between the second low-frequency arm portion 2122 and the fourth low-frequency arm portion 2124.
It should be noted that the aforementioned bent structure is only one of the bent structures of the high-frequency oscillator arm 211 and the low-frequency oscillator arm 212, and the high-frequency oscillator arm 211 and the low-frequency oscillator arm 212 may be provided with different bent structures according to actual needs, and is not limited in particular here.
Preferably, the first high-arm segment 2111 has a length of 8mm and a width of 3 mm; the second high-frequency arm section 2112 has a length of 12mm and a width of 1.8 mm; the first low-frequency arm section 2121 has a length of 8mm and a width of 1.5 mm; the second low-frequency arm section 2122 has a length of 18.9mm and a width of 1.5 mm; the arc length of the third low-frequency arm section 2123 is 13.2mm, and the width is 3 mm; the fourth low-frequency arm section 2124 has a length of 17.4mm and a width of 3 mm. Of course, the sizes of the first high-frequency arm segment 2111, the second high-frequency arm segment 2112, the first low-frequency arm segment 2121, the second low-frequency arm segment 2122, the third low-frequency arm segment 2123, and the fourth low-frequency arm segment 2124 can be adjusted according to actual needs, and are not limited specifically herein.
In an embodiment, please refer to fig. 1 and fig. 4, the dual-band directional antenna further includes a feeding unit 30, the number of the radiating units 20 is multiple, and the radiating units 20 are connected through the feeding unit 30. By providing a plurality of radiation elements 20 and connecting the plurality of radiation elements 20 through the feeding element 30, the high gain characteristic of the above-described dual-frequency directional antenna is effectively achieved.
It should be noted that the figures show that four radiation units 20 are provided, but the invention is not limited thereto, and more radiation units 20 may be provided according to actual needs, and the higher the number of radiation units 20 is, the better the high gain characteristic of the dual-frequency directional antenna is.
Specifically, as shown in fig. 1 and fig. 4, the feeding unit 30 includes two feeding lines respectively disposed on the first surface and the second surface, the feeding line on the first surface is used to connect the radiation patches 21 on the first surface, and the feeding line on the second surface is used to connect the radiation patches 21 on the second surface.
Further, as shown in fig. 1 and fig. 4, the feeder line includes a bus bar 31 and a plurality of connecting sections 32, each connecting section 32 is connected to each radiation patch 21, each connecting section 32 includes a first transforming section 321, a second transforming section 322, and a third transforming section 323, which are connected in sequence, one end of the first transforming section 321, which is far from the second transforming section 322, is connected to the bus bar 31, and one end of the third transforming section 323, which is far from the second transforming section 322, is connected to the radiation patch 21. The first transformation section 321, the second transformation section 322 and the third transformation section 323 are sequentially connected to form a three-section Chebyshev impedance transformation section structure, the power division network performance can be optimized by adjusting the length and the width of the first transformation section 321, the second transformation section 322 and the third transformation section 323, so that the standing waves of the dual-frequency directional antenna in two frequency bands are better, and the input return loss of the dual-frequency directional antenna in the two frequency bands can be controlled within 1 dB.
Preferably, the first transforming joint 321 has a length of 6.4mm and a width of 0.35 mm; the length of the second transformation joint 322 is 8.4mm, and the width is 1.1 mm; the third transition section 323 has a length of 19.9mm and a width of 2 mm. Of course, the sizes of the first transformation joint 321, the second transformation joint 322 and the third transformation joint 323 can be adjusted according to actual needs, and are not limited in detail here.
Further, as shown in fig. 1 and fig. 4, the two power supply lines are disposed in parallel, a power supply port 311 is opened on the bus segment 31, and the two power supply lines are connected through the power supply port 311.
In one embodiment, as shown in fig. 1, the plurality of radiation units 20 are arranged in an array structure. By arranging the plurality of radiating elements 20 in an array structure, the size of the dual-frequency directional antenna can be further reduced, and the requirement of miniaturization of communication equipment can be more effectively met.
In one embodiment, the spacing between the radiating element 20 and the edge of the substrate 10 is greater than 0.5 mm. A certain distance is reserved between the radiating element 20 and the edge of the substrate 10, so that the radiating element 20 is prevented from being damaged when the substrate 10 is cut, and the production yield of the dual-frequency directional antenna is effectively improved.
In an embodiment, please refer to fig. 1, the radiation patches 21 on the first surface and the radiation patches 21 on the second surface are symmetrically disposed.
In one embodiment, the substrate 10 is one of an FR-4 board, a PTFE board, and a CEM-1 board. The substrate 10 is preferably a PTFE sheet having a dielectric constant of 2.65, a dielectric loss of only 0.005, and a sheet thickness of 0.75mm, because the PTFE sheet has a small dielectric loss.
Please refer to fig. 5 and fig. 6, the input return loss of the dual-band directional antenna in the 2.4G band and the 5G band is less than-10 dB; as shown in fig. 7 and 8, the maximum gain of the dual-band directional antenna in the 2.4G band exceeds 9dBi, and the maximum gain in the 5G band reaches 12dBi-13 dBi. Therefore, the dual-frequency directional antenna not only has small size, but also has excellent performance and higher use value.
A communication device comprises the dual-frequency directional antenna.
Since the communication device employs all embodiments of the dual-band directional antenna, at least all the advantages of the embodiments are achieved, and no further description is given here.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A dual-band directional antenna, characterized by: including base plate, reflecting plate and locating radiating element on the base plate, the base plate has the first surface and the second surface that deviate from mutually, the reflecting plate with the first surface or the second surface interval sets up, radiating element is including locating respectively the first surface with two radiation patches on second surface, the radiation patch includes interconnect's high frequency oscillator arm and low frequency oscillator arm, high frequency oscillator arm with low frequency oscillator arm is the structure of buckling.
2. The dual-band directional antenna of claim 1, wherein: the high-frequency oscillator arm comprises a first high-frequency arm section and a second high-frequency arm section, wherein the first high-frequency arm section and the second high-frequency arm section are both of a long strip structure, and the first high-frequency arm section and the second high-frequency arm section are mutually connected to form a right-angle structure; the low-frequency oscillator arm comprises a first low-frequency arm section, a second low-frequency arm section, a third low-frequency arm section and a fourth low-frequency arm section, wherein the first low-frequency arm section, the second low-frequency arm section and the fourth low-frequency arm section are both of long strip structures, the third low-frequency arm section is of a circular arc structure, the first low-frequency arm section is connected with the second low-frequency arm section to form a right-angle structure, and the third low-frequency arm section is connected between the second low-frequency arm section and the fourth low-frequency arm section.
3. The dual-band directional antenna of claim 1, wherein: the dual-frequency directional antenna further comprises a plurality of feeding units, and the plurality of radiating units are connected through the feeding units.
4. The dual-band directional antenna of claim 3, wherein: the feeding unit includes two feeding lines respectively disposed on the first surface and the second surface, the feeding line on the first surface is used to connect the radiation patches on the first surface, and the feeding line on the second surface is used to connect the radiation patches on the second surface.
5. The dual-band directional antenna of claim 4, wherein: the feeder line comprises a confluence section and a plurality of connecting sections, each connecting section is correspondingly connected with each radiation patch, each connecting section comprises a first transformation section, a second transformation section and a third transformation section which are sequentially connected, one end, far away from the second transformation section, of the first transformation section is connected with the confluence section, and one end, far away from the second transformation section, of the third transformation section is connected with the radiation patches.
6. The dual-band directional antenna of claim 3, wherein: the plurality of radiation units are arranged in an array structure.
7. The dual-band directional antenna of any one of claims 1-6, wherein: the distance between the radiation unit and the edge of the substrate is larger than 0.5 mm.
8. The dual-band directional antenna of any one of claims 1-6, wherein: the radiation patches on the first surface and the radiation patches on the second surface are arranged symmetrically with respect to each other.
9. The dual-band directional antenna of any one of claims 1-6, wherein: the substrate is one of an FR-4 board, a PTFE board and a CEM-1 board.
10. A communication device, characterized by: comprising a dual frequency directional antenna according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020134700.0U CN211150784U (en) | 2020-01-19 | 2020-01-19 | Double-frequency directional antenna and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020134700.0U CN211150784U (en) | 2020-01-19 | 2020-01-19 | Double-frequency directional antenna and communication equipment |
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| Publication Number | Publication Date |
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| CN211150784U true CN211150784U (en) | 2020-07-31 |
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| CN202020134700.0U Active CN211150784U (en) | 2020-01-19 | 2020-01-19 | Double-frequency directional antenna and communication equipment |
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| CN (1) | CN211150784U (en) |
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