CN214505770U - Broadband external antenna - Google Patents
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- CN214505770U CN214505770U CN202022969983.3U CN202022969983U CN214505770U CN 214505770 U CN214505770 U CN 214505770U CN 202022969983 U CN202022969983 U CN 202022969983U CN 214505770 U CN214505770 U CN 214505770U
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Abstract
The utility model discloses an external antenna of wide band, it includes base plate, low frequency radiation module and high frequency radiation module locate same one side of base plate, low frequency radiation module follows the y axle negative direction of base plate place face is including consecutive low frequency radiation branch, first low frequency radiating element and second low frequency radiating element, first low frequency radiating element part surrounds high frequency radiation module, high frequency radiating element with the clearance has between the first low frequency radiating element, first low frequency radiating element with be equipped with coupling structure between the high frequency radiating module, first low frequency radiating element, second low frequency radiating element and high frequency radiation module pass through coaxial transmission line and outside intercommunication. The broadband external antenna has the advantages that the bandwidth is wide, all frequency bands commonly used by 5G Sub-6G can be covered, the antenna is simple in structure, convenient to assemble and high in universality, and the stability and the anti-interference capability are high.
Description
Technical Field
The utility model relates to a radio communication technology field especially relates to a wide band external antenna.
Background
With the development of the mobile internet, more and more intelligent devices are connected to the internet, which has higher and higher requirements on the capacity and the rate of the current mobile communication network. The 5G serving as a fifth generation mobile communication system has the advantages of high capacity, high speed, low time delay and the like, and can better meet the current mobile communication requirements.
Meanwhile, in many future application scenarios, such as unmanned driving, AR technology, remote medical treatment and the like, 5G is needed as technical support, so that the rapid development of 5G is of great significance for improving the national science and technology level.
The development of 5G also puts higher demands on the antenna, and the antenna is developed towards miniaturization, multiple frequency bands and wide frequency bands. Currently, there are few 5G antennas in the industry, and the interference rejection of the antenna is weak.
Therefore, it is necessary to design a wideband antenna covering the frequency ranges of 600-960MHz and 1.71-5GHz and having strong anti-interference capability, which can satisfy the requirement of the antenna in the 5G mobile communication era.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can cover 600 and give up 960MHz (VSWR is less than 3) and 1.71-5GHz (VSWR is less than 2.5) antenna of frequency channel, can cover all frequency channels commonly used of 5G Sub-6G.
In order to realize the utility model purpose, the utility model provides a wide band external antenna, the concrete scheme is as follows: the broadband external antenna comprises a substrate, a low-frequency radiation module and a high-frequency radiation module, wherein the low-frequency radiation module and the high-frequency radiation module are arranged on the same side of the substrate, the low-frequency radiation module is arranged along the y-axis negative direction of the surface where the substrate is located and comprises a low-frequency radiation branch, a first low-frequency radiation unit and a second low-frequency radiation unit which are sequentially connected, the first low-frequency radiation unit partially surrounds the high-frequency radiation module, a gap is formed between the high-frequency radiation module and the first low-frequency radiation unit, a coupling structure is arranged between the first low-frequency radiation unit and the high-frequency radiation module, and the first low-frequency radiation unit, the second low-frequency radiation unit and the high-frequency radiation module are communicated with the outside through coaxial transmission lines.
Furthermore, a gap is formed between the second low-frequency radiation unit and the first low-frequency radiation unit, and the second low-frequency radiation unit and the first low-frequency radiation unit are connected through a microstrip line.
Further, first low frequency radiation unit is C shape structure, first low frequency radiation unit's opening orientation the x axle negative direction of base plate place face, first low frequency radiation unit follows y axle positive direction includes bending portion, connecting portion and last kink in proper order, bending portion down with form first holding region between the connecting portion, the opening with form the second holding region between the connecting portion, go up the kink with form the third holding region between the connecting portion.
Furthermore, the high-frequency radiation module comprises a high-frequency radiation unit and a high-frequency radiation branch connected with the high-frequency radiation unit, the high-frequency radiation unit is located in the first accommodating area and the second accommodating area, and the high-frequency radiation branch extends into the third accommodating area.
Furthermore, the high-frequency radiation unit is in a step shape, and a first groove is formed in one end of the high-frequency radiation unit in the negative direction of the y axis.
Further, the coupling structure is located at an opening of the first low-frequency radiating unit, the coupling structure includes a first coupling unit and a second coupling unit that can be coupled to each other, the first coupling unit is connected to the lower bending portion, and the second coupling unit is connected to the high-frequency radiating unit.
Furthermore, the low-frequency radiation branch is in an inverted U shape, one open end of the low-frequency radiation branch is connected with the first low-frequency radiation unit, and the other open end of the low-frequency radiation branch is a free end.
Furthermore, a second groove is formed in one end of the second low-frequency radiation unit in the negative direction of the y axis.
Furthermore, a feeding point is arranged on the high-frequency radiating unit, a grounding point is arranged on the first low-frequency radiating unit, a middle stripping grounding point is arranged on the second low-frequency radiating unit, an inner conductor of the coaxial transmission line is connected with the feeding point, and an outer conductor of the coaxial transmission line is connected with the grounding point and the middle stripping grounding point.
Furthermore, the broadband external antenna is a monopole antenna, and the broadband external antenna is linearly polarized.
Compared with the prior art, the broadband external antenna has one or more of the following beneficial effects:
(1) the broadband external antenna can cover 600-960MHz (VSWR is less than 3) and 1.71-5GHz (VSWR is less than 2.5), has wide bandwidth and comprises all frequency bands commonly used by 5G Sub-6G;
(2) the broadband external antenna is simple in structure, convenient to assemble and high in universality;
(3) according to the broadband external antenna, the mode that the inner conductor of the coaxial transmission line is connected with the feeding point and the outer conductor of the coaxial transmission line is connected with the grounding point and the stripping grounding point is adopted, feeding is simple, and a complex feeding network can be omitted;
(4) the broadband external antenna adopts a mode of wrapping a low frequency and a high frequency, and has stronger stability and anti-interference performance;
(5) the broadband external antenna adopts a monopole form, and meanwhile, a plurality of gaps are coupled between the first low-frequency radiation unit and the high-frequency radiation unit, so that the bandwidth of the antenna can be widened;
(6) according to the broadband external antenna, the grooves are formed in the second low-frequency radiating unit, the first low-frequency radiating unit and the high-frequency radiating unit respectively, so that the current trend can be changed, the coupling effect is achieved, the electrical length can be lengthened, and the size of the antenna can be reduced;
(7) according to the broadband external antenna, the high-frequency radiation unit is in a step shape and is bent for multiple times, multiple resonances can be generated at high frequency, and the bandwidth of the antenna is widened;
(8) according to the broadband external antenna, the mode that the coaxial transmission line and the second low-frequency radiating unit are grounded in a stripping mode is adopted, so that external signal interference can be effectively shielded, and the signal stability is improved;
(9) the broadband external antenna adopts a linear polarization mode, and radiation has the characteristic of omni-directionality.
Drawings
Fig. 1 is a schematic structural diagram of a broadband external antenna according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of the broadband external antenna according to the embodiment of the present disclosure when a coaxial transmission line is connected thereto;
fig. 3 is a VSWR graph obtained by HFSS simulation at 0.5 to 3GHz for the broadband external antenna according to the embodiment of the present application;
fig. 4 is a VSWR graph obtained by the HFSS simulation at 1.71-5GHz for the broadband external antenna according to the embodiment of the present application.
The antenna comprises a substrate 1, a low-frequency radiation module 2, a first low-frequency radiation unit 21, a second low-frequency radiation unit 22, a low-frequency radiation branch 23, a high-frequency radiation module 3, a high-frequency radiation unit 31, a high-frequency radiation branch 32, a coupling structure 4, a first coupling unit 41, a second coupling unit 42, a feeding point 5, a grounding point 6, a grounding point 7 and a coaxial transmission line 8.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a broadband external antenna according to an embodiment of the present application; fig. 2 is a schematic structural diagram of the broadband external antenna according to the embodiment of the present disclosure when a coaxial transmission line is connected thereto; fig. 3 is a VSWR graph obtained by HFSS simulation at 0.5 to 3GHz for the broadband external antenna according to the embodiment of the present application; fig. 4 is a VSWR graph obtained by the HFSS simulation at 1.71-5GHz for the broadband external antenna according to the embodiment of the present application.
Examples
As shown in fig. 1 and fig. 2, the broadband external antenna of the present embodiment includes a substrate 1, a low-frequency radiation module 2, and a high-frequency radiation module 3, where the low-frequency radiation module 2 and the high-frequency radiation module 3 are disposed on the same side of the substrate 1. The substrate 1 is preferably a PCB substrate made of FR-4 material, and is preferably in the shape of a long rectangle as shown in the figure. In order to better express the structural characteristics of the external antenna of the present application, the surface of the substrate 1 is defined as an xy plane, the length direction of the substrate 1 is the y-axis direction, and the positive direction is the upward direction in the figure; the width direction of the substrate 1 is the x-axis direction, and the positive direction is the right direction in the figure.
The low-frequency radiation module 2 includes a low-frequency radiation branch 23, a first low-frequency radiation unit 21, and a second low-frequency radiation unit 22, which are connected in sequence, along the y-axis negative direction (i.e., from top to bottom in the figure). The first low-frequency radiating unit 21 is wired downwards from the middle of the left side edge of the substrate 1, and then wired towards the right side edge of the substrate 1 to form a lower bent part of the first low-frequency radiating unit 21; then, upward routing is performed along the right edge of the substrate 1 to form a connection part of the first low-frequency radiation unit 21; and then routing towards the left side edge of the substrate 1, and finally routing downwards along the left side edge of the substrate 1 to form an upper bending part of the first low-frequency radiating unit 21, so that the first low-frequency radiating unit 21 is integrally in a reverse C-shaped structure, that is, the opening of the first low-frequency radiating unit 21 faces the x-axis negative direction, that is, the left direction in the figure. A first containing area is formed between the lower bending portion and the connecting portion, a second containing area is formed between the opening and the connecting portion, and a third containing area is formed between the upper bending portion and the connecting portion. Preferably, the electrical length of the first low-frequency radiating element 21 is about 125mm, which is 1/4 wavelength corresponding to 0.6 GHz.
The high-frequency radiation module 3 is located in an accommodating area surrounded by the first low-frequency radiation unit 21, and one end of the high-frequency radiation module 3 extends to an opening of the first low-frequency radiation unit 21, that is, the first low-frequency radiation unit 21 partially surrounds the high-frequency radiation module 3. This application antenna adopts "low frequency" package "high frequency" form, and the low frequency radiation unit package has stronger interference immunity in 3 outsides of high frequency radiation module, and stability is stronger. The high-frequency radiation module 3 includes a high-frequency radiation unit 31 and a high-frequency radiation branch 32 connected to the high-frequency radiation unit 31. The high-frequency radiation unit 31 is located in the first accommodation region and the second accommodation region. As shown in fig. 1, a preferred structure of the connection portion of the first low-frequency radiating element 21 of the present invention is schematically shown, the lower half portion of the connection portion is thin, the upper half portion of the connection portion is wide, and a U-shaped bend is further disposed between the upper portion and the lower portion, so that the structure design can form a step-shaped receiving area in the first low-frequency radiating element 21. Preferably, the high-frequency radiating unit 31 is designed to be stepped and bent for multiple times, so that multiple resonance points can be generated at high frequency, and the bandwidth of the antenna is widened. In addition, a plurality of gaps are also formed between the high-frequency radiating unit 31 and the first low-frequency radiating unit 21, so that a plurality of gaps are coupled between the high-frequency radiating unit 31 and the first low-frequency radiating unit 21, and the bandwidth of the antenna can be widened.
The high-frequency radiation branches 32 extend into the third accommodation area, and as shown in fig. 1, the high-frequency radiation branches 32 are distributed in an "L" shape in the accommodation area surrounded by the first low-frequency radiation unit 21 on the right side of the upper edge of the high-frequency radiation unit 31. The high frequency radiation branch 32 and the first low frequency radiation unit 21 have a coupling effect, so that the VSWR value of the antenna corresponding to 1.9GHz can be reduced.
As shown in fig. 1, a first groove, preferably an L-shaped groove, is opened at one end of the high-frequency radiating unit 31 in the negative direction of the y-axis, that is, a first groove is opened at the bottom end of the high-frequency radiating unit 31 in the figure. The high-frequency radiation unit 31 is provided with a slot, so that the current direction can be changed to play a coupling role, and the VSWR value of the antenna corresponding to 4.2GHz can be reduced.
In a further embodiment, a coupling structure 4 is provided between the first low frequency radiating element 21 and the high frequency radiating module 3. The coupling structure 4 is located at an opening of the first low frequency radiating element 21. The coupling structure 4 comprises a first coupling unit 41 and a second coupling unit 42 that are capable of being coupled to each other. The first coupling unit 41 is connected to the lower bent portion, as shown in fig. 1, preferably, the first coupling unit 41 is disposed above the left side of the lower opening end of the first low-frequency radiating unit 21, extends upward from the first low-frequency radiating unit 21, and is linearly distributed. The second coupling unit 42 is connected to the high frequency radiating unit 31, as shown in fig. 1, the upper end of the high frequency radiating unit 31 is wider, a step-shaped structure is formed at the left side of the high frequency radiating unit 31 in the figure, and the second coupling unit 42 extends downward from the step-shaped structure and is linearly distributed. The second coupling unit 42 is aligned with the step structure on the left side, and the second coupling unit 42 is spaced apart from the high-frequency radiating unit 31 on the right side to form a coupling gap. The two spaced and oppositely distributed first coupling units 41 and second coupling units 42 are coupled with each other, so that the VSWR value of the antenna corresponding to 4GHz can be reduced.
The low-frequency radiating branches 23 are distributed in an inverted U-shape at the upper edge of the first low-frequency radiating unit 21. As shown in fig. 1, one open end of the low-frequency radiating branch 23 is connected to the first low-frequency radiating element 21, and the other open end of the low-frequency radiating branch 23 is a free end. The VSWR value of the antenna corresponding to 0.7GHz can be reduced by providing the low frequency radiating branch 23 on the first low frequency radiating element 21.
A gap is formed between the second low-frequency radiating element 22 and the first low-frequency radiating element 21, and the second low-frequency radiating element 22 and the first low-frequency radiating element 21 are connected through a microstrip line. As shown in fig. 1, that is, the second low-frequency radiating elements 22 are distributed below the first low-frequency radiating element 21, and are preferably connected by an "L" -shaped microstrip line.
In a further embodiment, one end of the second low-frequency radiating element in the negative direction of the y-axis is further provided with a second groove, that is, the bottom of the second low-frequency radiating element 22 shown in fig. 1 is grooved for coupling. The second low-frequency radiating unit 22, the first low-frequency radiating unit 21 and the high-frequency radiating unit 31 are provided with a plurality of slots, so that the current direction can be changed to play a coupling role, and the bandwidth of the antenna can be effectively widened, as shown in the VSWR graphs shown in fig. 3 and 4, it can be known that the VSWR of the broadband external antenna in the range of 600 plus 960MHz is less than 3, the VSWR in the range of 1.71-5GHz is less than 2.5, and the broadband external antenna can meet the mobile communication of different standards such as 2G/3G/4G/5G Sub-6G. Meanwhile, the electric length can be lengthened, and the size of the antenna can be reduced.
In a further embodiment, the first low frequency radiating element 21, the second low frequency radiating element 22 and the high frequency radiating module 3 communicate with the outside through a coaxial transmission line 8, as shown in fig. 2. Preferably, a feeding point 5 is provided on the high-frequency radiating element 31, a grounding point 6 is provided on the first low-frequency radiating element 21, and a center grounding point 7 is provided on the second low-frequency radiating element 22. The inner conductor of the coaxial transmission line 8 is connected with the feeding point 5, and the outer conductor of the coaxial transmission line 8 is connected with the grounding point 6 and the stripping grounding point 7, preferably by welding. The feed is simple, and a complex feed network can be omitted. Meanwhile, the coaxial transmission line 8 and the second low-frequency radiating unit 22 are grounded through stripping, so that external signal interference can be effectively shielded, and the signal stability is improved.
In a further embodiment, the broadband external antenna is a monopole antenna, the broadband external antenna is linearly polarized, and radiation has an omnidirectional characteristic.
In summary, the broadband external antenna of the present application has one or more of the following advantages:
(1) the broadband external antenna can cover 600-960MHz (VSWR is less than 3) and 1.71-5GHz (VSWR is less than 2.5), has wide bandwidth and comprises all frequency bands commonly used by 5G Sub-6G;
(2) the broadband external antenna is simple in structure, convenient to assemble and high in universality;
(3) according to the broadband external antenna, the inner conductor of the coaxial transmission line 8 is connected with the feeding point 5, the outer conductor of the coaxial transmission line 8 is connected with the grounding point 6 and the stripping grounding point 7, feeding is simple, and a complex feeding network can be omitted;
(4) the broadband external antenna adopts a mode of wrapping a low frequency and a high frequency, and has stronger stability and anti-interference performance;
(5) the broadband external antenna adopts a monopole form, and meanwhile, a plurality of gaps are coupled between the first low-frequency radiation unit 21 and the high-frequency radiation unit 31, so that the bandwidth of the antenna can be widened;
(6) according to the broadband external antenna, the grooves are formed in the second low-frequency radiating unit 22, the first low-frequency radiating unit 21 and the high-frequency radiating unit 31 respectively, so that the current trend can be changed, the coupling effect is achieved, the electrical length can be lengthened, and the size of the antenna is reduced;
(7) according to the broadband external antenna, the high-frequency radiation unit 31 is in a step shape and is bent for multiple times, multiple resonances can be generated at high frequency, and the bandwidth of the antenna is widened;
(8) according to the broadband external antenna, the coaxial transmission line 8 and the second low-frequency radiation unit 22 are grounded in a stripping mode, so that external signal interference can be effectively shielded, and the signal stability is improved;
(9) the broadband external antenna adopts a linear polarization mode, and radiation has the characteristic of omni-directionality.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The utility model provides a broadband external antenna, its characterized in that, it includes base plate (1), low frequency radiation module (2) and high frequency radiation module (3) are located same one side of base plate (1), low frequency radiation module (2) are followed the y axle negative direction of base plate (1) place face is including consecutive low frequency radiation branch (23), first low frequency radiation unit (21) and second low frequency radiation unit (22), first low frequency radiation unit (21) part surrounds high frequency radiation module (3), high frequency radiation module (3) with have the clearance between first low frequency radiation unit (21), first low frequency radiation unit (21) with be equipped with coupling structure (4) between high frequency radiation module (3), first low frequency radiation unit (21) the, The second low-frequency radiating unit (22) and the high-frequency radiating module (3) are communicated with the outside through a coaxial transmission line (8).
2. The broadband external antenna according to claim 1, wherein a gap is formed between the second low-frequency radiating element (22) and the first low-frequency radiating element (21), and the second low-frequency radiating element (22) and the first low-frequency radiating element (21) are connected through a microstrip line.
3. The broadband external antenna according to claim 2, wherein the first low-frequency radiating unit (21) has a C-shaped structure, an opening of the first low-frequency radiating unit (21) faces to an x-axis negative direction of a surface of the substrate (1), the first low-frequency radiating unit (21) sequentially comprises a lower bending portion, a connecting portion and an upper bending portion along a y-axis positive direction, a first accommodating area is formed between the lower bending portion and the connecting portion, a second accommodating area is formed between the opening and the connecting portion, and a third accommodating area is formed between the upper bending portion and the connecting portion.
4. The broadband external antenna according to claim 3, wherein the high-frequency radiating module (3) comprises a high-frequency radiating unit (31) and a high-frequency radiating branch (32) connected to the high-frequency radiating unit (31), the high-frequency radiating unit (31) is located in the first accommodating area and the second accommodating area, and the high-frequency radiating branch (32) extends into the third accommodating area.
5. The broadband external antenna according to claim 4, wherein the high-frequency radiating unit (31) is stepped, and a first groove is formed at one end of the high-frequency radiating unit (31) in the negative y-axis direction.
6. The broadband external antenna according to claim 4, wherein the coupling structure (4) is located at the opening of the first low-frequency radiating element (21), the coupling structure (4) comprises a first coupling element (41) and a second coupling element (42) which can be coupled with each other, the first coupling element (41) is connected with the lower bent portion, and the second coupling element (42) is connected with the high-frequency radiating element (31).
7. The broadband external antenna according to claim 1, wherein the low-frequency radiating branch (23) is in an inverted U shape, one open end of the low-frequency radiating branch (23) is connected to the first low-frequency radiating element (21), and the other open end of the low-frequency radiating branch (23) is a free end.
8. The broadband external antenna according to claim 1, wherein the second low-frequency radiating unit (22) has a second groove formed at one end in the negative y-axis direction.
9. The broadband external antenna according to claim 4, wherein the high frequency radiating element (31) is provided with a feeding point (5), the first low frequency radiating element (21) is provided with a grounding point (6), the second low frequency radiating element (22) is provided with a central stripping grounding point (7), the inner conductor of the coaxial transmission line (8) is connected with the feeding point (5), and the outer conductor of the coaxial transmission line (8) is connected with the grounding point (6) and the central stripping grounding point (7).
10. The broadband external antenna according to claim 4, wherein the broadband external antenna is a monopole antenna and the broadband external antenna is linearly polarized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022969983.3U CN214505770U (en) | 2020-12-10 | 2020-12-10 | Broadband external antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022969983.3U CN214505770U (en) | 2020-12-10 | 2020-12-10 | Broadband external antenna |
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| Publication Number | Publication Date |
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| CN214505770U true CN214505770U (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022969983.3U Active CN214505770U (en) | 2020-12-10 | 2020-12-10 | Broadband external antenna |
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| CN (1) | CN214505770U (en) |
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