CN212303916U - Low-frequency-band small base station antenna - Google Patents
Low-frequency-band small base station antenna Download PDFInfo
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- CN212303916U CN212303916U CN202021220888.7U CN202021220888U CN212303916U CN 212303916 U CN212303916 U CN 212303916U CN 202021220888 U CN202021220888 U CN 202021220888U CN 212303916 U CN212303916 U CN 212303916U
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Abstract
The utility model provides a low-frequency small base station antenna, which comprises a PCB substrate, wherein a connector pin interface, a screw hole, a feed point bonding pad and a parasitic unit bonding pad are arranged on the PCB substrate; the PCB feeder line connects the connector pin interface with the feed spot welding disc; the antenna radiator is parallel to the PCB substrate, and one end of the antenna radiator is connected with the feeding point bonding pad and the feeding point bonding pad through the feeding point and the feeding point; one end of the antenna parasitic unit is connected with the parasitic unit bonding pad through the parasitic unit connecting sheet; and the plastic support is connected with the antenna radiator and the antenna parasitic unit. The PCB feeder introduces the radio frequency signal in the shell to the pad position of the feeding point, and finally transmits the radio frequency signal to the surface of the antenna radiator, and the length and the width of the PCB feeder are changed, so that the impedance matching network of the low-frequency small base station antenna is changed, and the bandwidth of the antenna can be conveniently expanded; the low-frequency small base station antenna has the advantages of small volume, simple structure, convenience in assembly and good antenna performance.
Description
Technical Field
The utility model relates to an antenna technology field especially relates to a little basic station antenna of low band.
Background
The 5G communication technology has a faster propagation rate but a narrower coverage than the 4G communication technology. Although the traditional macro base station antenna has the advantages of high gain, large coverage area, more service users and the like, the traditional macro base station antenna cannot be applied to all 5G application scenarios. Small Cell (Small Cell) has been widely used in dense user areas and indoor environments as a supplement to macro base station signal coverage. The method has the advantages of low transmitting power, small volume, convenience in installation and the like, can share the network load of a macro base station, improves the channel capacity, solves the blind spot problem of signal coverage, and becomes one of the mainstream modes of indoor 5G signal deployment at present.
The antenna, the radio frequency processing element and the baseband processing unit are integrated in a small space of the current 5G small base station, so that the installation is very convenient, but due to the particularity of a use scene, the appearance of the base station needs to be small enough, which causes great trouble to the design of the antenna. Obviously, the conventional base station antenna cannot be applied to a 5G small base station due to its large size, and especially for the low frequency antenna, the coverage frequency of the low frequency antenna is usually low (880 MHz-960 MHz), and a large size is required. Therefore, how to design a low-frequency antenna inside a small base station is one of the problems that needs to be solved at present, not only to meet the miniaturization requirement, but also to meet the communication performance requirement.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a little basic station antenna of low band.
In order to solve the technical problem, the utility model provides a little basic station antenna of low band, include:
the PCB substrate is provided with a connector pin interface, a screw hole, a feed point bonding pad and a parasitic unit bonding pad;
a PCB feed line connecting the connector pin interface and the feed point pad;
the antenna radiator is parallel to the PCB substrate, and one end of the antenna radiator is connected with the feeding point bonding pad and the feeding point bonding pad through a feeding point and a feeding point;
the antenna parasitic unit is arranged on one side of the antenna radiating body and is parallel to the antenna radiating body, and one end of the antenna parasitic unit is connected with the parasitic unit bonding pad through a parasitic unit connecting sheet;
and the plastic bracket is connected with the antenna radiating body and the antenna parasitic unit and is used for being installed on the machine shell.
Furthermore, a U-shaped groove is formed between the feeding point and the feeding point, and an opening of the U-shaped groove is positioned at one end close to the PCB substrate.
Furthermore, the PCB substrate is in a triangular plate shape, and the inner side of the PCB substrate is parallel to the plastic support.
Furthermore, the antenna radiator and the antenna parasitic unit are both made of metal elastic sheets.
Further, the distance between the antenna radiator and the antenna parasitic element and the PCB substrate is 10 mm.
Furthermore, three rectangular small holes are formed in the PCB substrate and are the feeding point bonding pad, the feeding point bonding pad and the parasitic unit bonding pad respectively.
Furthermore, two groups of hot-melting columns are arranged on the plastic support, the antenna radiating body is provided with a plurality of first positioning holes matched with one group of the hot-melting columns, and one group of the hot-melting columns penetrates through the plurality of first positioning holes to fix the antenna radiating body; the antenna parasitic unit is provided with a plurality of second positioning holes matched with the other group of hot melting columns, and the other group of hot melting columns penetrate through the second positioning holes to fix the antenna parasitic unit.
Further, the thickness of the PCB substrate is 1.2 mm.
Furthermore, the bottom of the plastic support is flush with the bottom of the PCB substrate, and a plurality of screw holes are formed in the bottom of the plastic support.
The utility model discloses a low band little base station antenna, PCB feeder introduces the radio frequency signal in the casing to the feed point pad position, finally transmits to the antenna radiator surface, as long as change the length and the width of PCB feeder, just be equivalent to changing the impedance matching network of this low band little base station antenna, can very convenient expansion antenna bandwidth; the low-frequency small base station antenna has the advantages of small volume, simple structure, convenience in assembly and good antenna performance.
Drawings
Fig. 1 is a schematic structural diagram of a low-band small base station antenna according to the present invention;
fig. 2 is a schematic structural diagram of the low-band small base station antenna of the present invention in another direction;
fig. 3 is an installation schematic diagram of the low-band small base station antenna of the present invention;
FIG. 4 is a graph of voltage standing wave ratio of the antenna of the low frequency band small base station of the present invention in the working frequency band;
FIG. 5 is the horizontal plane directional diagram of the low band small cell antenna of the present invention;
FIG. 6 is a graph of the efficiency of the antenna of the low band small cell of the present invention in the working frequency band;
fig. 7 is a gain diagram in the working frequency band of the low-frequency small base station antenna of the present invention;
labeled as: the antenna comprises a PCB substrate 1, a connector pin interface 2, a screw hole 3, a feed point pad 5, a feed point pad 6, a parasitic element pad 7, a feed point 8, a feed point 9, an antenna radiator 10, an antenna parasitic element 11, a plastic support 12, a hot melting column 13, a shell 14 and a parasitic element connecting sheet 15.
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.
As shown in fig. 1 to 7, a low-band small cell antenna includes: the PCB comprises a PCB substrate 1, a connector pin interface 2, a screw hole 3, a feed point bonding pad 5, a feed point bonding pad 6 and a parasitic unit bonding pad 7, wherein the PCB substrate is provided with the connector pin interface; a PCB feed line 4 connecting the connector pin interface 2 and the feed point pad 5; an antenna radiator 10 parallel to the PCB substrate 1, one end of which is connected to the feeding point pad 5 and the feeding point pad 6 through a feeding point 8 and a feeding point 9; the antenna parasitic element 11 is arranged on one side of the antenna radiator 10, is arranged in parallel with the antenna radiator 10, and has one end connected with the parasitic element bonding pad 7 through a parasitic element connecting sheet 15; a plastic bracket 12 connected to the antenna radiator 10 and the antenna parasitic element 11, for being mounted to a chassis 14; the antenna radiator 10 is disposed in parallel and in the same direction as the antenna parasitic element 11 with a certain interval. The PCB feeder 4 introduces the radio frequency signal in the casing 14 to the position of the feed point pad 8, and finally transmits the radio frequency signal to the surface of the antenna radiator 10, and as long as the length and the width of the PCB feeder 4 are changed, the impedance matching network of the low-frequency small base station antenna is changed, so that the bandwidth of the antenna can be conveniently expanded; the low-frequency small base station antenna has the advantages of small volume, simple structure, convenience in assembly and good antenna performance.
A U-shaped groove is formed between the feeding point 8 and the feeding point 9, and the opening of the U-shaped groove is positioned at one end close to the PCB substrate 1. A U-shaped groove is formed between the feeding point 8 and the feeding point 9, the size of the U-shaped groove can be changed to change the current path from the feeding point 8 to the feeding point 9, and the standing wave of the low-frequency small base station antenna is adjusted; the antenna radiator 10 and the antenna parasitic unit 11 are arranged in parallel and in the same direction and have a certain interval, the antenna radiator and the antenna parasitic unit are coupled with each other, the current direction is consistent, extra resonance can be excited, and the bandwidth of the low-frequency small base station antenna covers the whole working frequency band.
The PCB substrate 1 is in a triangular plate shape, and the inner side thereof is parallel to the plastic support 12.
The antenna radiator 10 and the antenna parasitic element 11 are made of metal elastic sheets.
The distance between the antenna radiator 10 and the antenna parasitic element 11 and the PCB substrate 1 is 10 mm.
The PCB substrate 1 is provided with three rectangular small holes which are respectively the feeding point bonding pad 5, the feeding point bonding pad 6 and the parasitic unit bonding pad 7.
The plastic bracket 12 is provided with two groups of hot-melt columns 13, the antenna radiator 10 is provided with a plurality of first positioning holes (not labeled) matched with one group of the hot-melt columns 13a, and the antenna radiator 10 is fixed by the group of the hot-melt columns 13a penetrating through the plurality of first positioning holes; the antenna parasitic element 11 is provided with a plurality of second positioning holes (not labeled) matching with another group of the heat-melting posts 13b, wherein the other group of the heat-melting posts 13b passes through the plurality of second positioning holes to fix the antenna parasitic element 11. When the antenna is installed, the bottom of the plastic support 12 is in full contact with the surface of the casing 14, so that the heights of the antenna radiator 10 and the antenna parasitic unit 11 to the surface of the casing 14 are completely fixed, and the relative positions of the antenna radiator 10 and the antenna parasitic unit 11 can be completely fixed through the hot melting column 13a and the hot melting column 13b, thereby stabilizing the antenna performance.
The low-frequency small base station antenna has the advantages of small area, small overall occupied space, simple assembly, low cost and easy batch production.
The thickness of the PCB substrate 1 is 1.2mm, and two sides of the PCB substrate are coated with copper.
The bottom of the plastic support 12 is flush with the bottom of the PCB substrate 1, and a plurality of screw holes 3 are formed in the bottom of the plastic support 12.
Fig. 4 is a voltage standing wave ratio diagram of the low-frequency small base station antenna of the present invention in the working frequency band, and the result shows that the voltage standing wave ratio is less than 2 in the whole working frequency band (880 plus 960 MHz), which is better than other products of the same type.
Fig. 5 shows the horizontal plane (Theta =90 deg) directional diagram of the low-band small base station antenna of the present invention in the working frequency band, and the result shows that the omnidirectional directivity of the antenna is better and no obvious recess exists in the whole working frequency band (880-960 MHz).
Fig. 6 is a graph showing the efficiency of the low-band small cell antenna of the present invention in the operating frequency band, and the result shows that the antenna efficiency is above 40% in the whole operating frequency band (880 plus 960 MHz).
Fig. 7 is a graph of the gain in the operating frequency band of the low-band small base station antenna of the present invention, and the result shows that the antenna gain is above 0.5db in the whole operating frequency band (880-960 MHz).
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and those skilled in the art can make many variations and modifications of the technical solution of the present invention without departing from the scope of the technical solution of the present invention.
Claims (9)
1. A low band small cell antenna, comprising:
the PCB substrate is provided with a connector pin interface, a screw hole, a feed point bonding pad and a parasitic unit bonding pad;
a PCB feed line connecting the connector pin interface and the feed point pad;
the antenna radiator is parallel to the PCB substrate, and one end of the antenna radiator is connected with the feeding point bonding pad and the feeding point bonding pad through a feeding point and a feeding point;
the antenna parasitic unit is arranged on one side of the antenna radiating body and is parallel to the antenna radiating body, and one end of the antenna parasitic unit is connected with the parasitic unit bonding pad through a parasitic unit connecting sheet;
and the plastic bracket is connected with the antenna radiating body and the antenna parasitic unit and is used for being installed on the machine shell.
2. The low band small cell antenna of claim 1, wherein: and a U-shaped groove is formed between the feeding point and the feeding point, and the opening of the U-shaped groove is positioned at one end close to the PCB substrate.
3. The low band small cell antenna of claim 1, wherein: the PCB substrate is in a triangular plate shape, and the inner side of the PCB substrate is parallel to the plastic support.
4. The low band small cell antenna of claim 1, wherein: the antenna radiator and the antenna parasitic unit are both made of metal elastic sheets.
5. The low band small cell antenna of claim 1, wherein: the distance between the antenna radiator and the distance between the antenna parasitic unit and the PCB substrate are 10 mm.
6. The low band small cell antenna of claim 1, wherein: the PCB substrate is provided with three rectangular small holes which are respectively the feeding point bonding pad, the feeding point bonding pad and the parasitic unit bonding pad.
7. The low band small cell antenna of claim 1, wherein: the plastic support is provided with two groups of hot melting columns, the antenna radiating body is provided with a plurality of first positioning holes matched with one group of the hot melting columns, and one group of the hot melting columns penetrates through the first positioning holes to fix the antenna radiating body; the antenna parasitic unit is provided with a plurality of second positioning holes matched with the other group of hot melting columns, and the other group of hot melting columns penetrate through the second positioning holes to fix the antenna parasitic unit.
8. The low band small cell antenna of claim 1, wherein: the thickness of the PCB substrate is 1.2 mm.
9. The low band small cell antenna of claim 1, wherein: the bottom of the plastic support is flush with the bottom of the PCB substrate, and a plurality of screw holes are formed in the bottom of the plastic support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021220888.7U CN212303916U (en) | 2020-06-28 | 2020-06-28 | Low-frequency-band small base station antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021220888.7U CN212303916U (en) | 2020-06-28 | 2020-06-28 | Low-frequency-band small base station antenna |
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| Publication Number | Publication Date |
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| CN212303916U true CN212303916U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021220888.7U Active CN212303916U (en) | 2020-06-28 | 2020-06-28 | Low-frequency-band small base station antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023030342A1 (en) * | 2021-09-06 | 2023-03-09 | 中兴通讯股份有限公司 | Antenna element and antenna array |
-
2020
- 2020-06-28 CN CN202021220888.7U patent/CN212303916U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023030342A1 (en) * | 2021-09-06 | 2023-03-09 | 中兴通讯股份有限公司 | Antenna element and antenna array |
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