CN212162071U - Radiation unit and antenna - Google Patents
Radiation unit and antenna Download PDFInfo
- Publication number
- CN212162071U CN212162071U CN201922500601.XU CN201922500601U CN212162071U CN 212162071 U CN212162071 U CN 212162071U CN 201922500601 U CN201922500601 U CN 201922500601U CN 212162071 U CN212162071 U CN 212162071U
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- balun
- radiating
- antenna
- feed
- radiating surface
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Abstract
The utility model provides a radiating element is applicable to 3.5G base station antenna, including radiating surface, balun and feed piece, the radiating surface with balun connects, hollow out construction has been seted up on the radiating surface, feed piece with the radiating surface is connected in order to be used as the feed. The utility model discloses a set up hollow out construction on the radiating surface to the route of extension electric current, thereby the increase the radiating area of radiating surface to reduce the length of balun, shorten the distance of radiating surface and reflecting plate, reduced the size restriction requirement of antenna dustcoat, reduced the whole thickness of antenna, can guarantee the good parameter performance of antenna simultaneously, and radiating element's structural design is simple, easily volume production processing, and the small easy antenna design overall arrangement of size.
Description
Technical Field
The utility model relates to a mobile communication technology field especially relates to a radiating element and antenna.
Background
With the rapid development of mobile communication technology, a new 5G communication technology is also applied to daily life. The 5G communication can meet the requirement of larger data capacity and ensure higher data transmission efficiency. In the communication data transmission process, operators often adopt a 3.5G frequency band (3300 MHz-3800 MHz) multi-array MIMO antenna to construct a large-capacity high-efficiency information network. The 3.5G frequency band operating frequency is higher, the carrier wave wavelength is shorter, the radiating element size that current base station antenna used is less, is difficult to satisfy the demand of 3.5G frequency band operating frequency band, and the used oscillator balun length of conventional 3.5G base station antenna is no less than 20mm, and the machining precision is high, is unfavorable for the miniaturized realization of antenna.
SUMMERY OF THE UTILITY MODEL
The main object of the present invention is to provide a radiating element with small size, simple structure and working bandwidth suitable for 3300MHz 3800 MHz.
Another object of the present invention is to provide an antenna including the above composite unit.
In order to achieve the above object, the present invention provides the following technical solutions:
as a first aspect, the utility model relates to a radiating element, including radiating surface, balun and feed piece, the radiating surface with balun connects, hollow out construction has been seted up on the radiating surface, feed piece with the radiating surface is connected in order to be used as the feed.
Further setting: the radiating surface comprises two pairs of vibrator arms which are perpendicularly and orthogonally arranged, and the balun is provided with four supporting arms and a base which is connected with the four supporting arms corresponding to the two pairs of vibrator arms.
Further setting: the feed pieces are provided with two feed pieces which are respectively used for connecting the oscillator arms located in the same polarization direction, and the two feed pieces are stacked up and down and are not in contact with each other.
Further setting: the feeding sheet positioned on the upper layer is arranged in a U-shaped structure.
Further setting: the connection positions of the two pairs of oscillator arms of the radiation surface and the balun form an annular structure, the bottom surface of the annular structure is lower than the radiation surface, and the feed sheet is arranged in the annular structure.
Further setting: the oscillator arms corresponding to the same polarization direction in the annular structure are respectively provided with a cable pad and a through hole, the cable pad is used for welding the balun and an outer conductor of a transmission cable, and the through hole is used for allowing an inner conductor of the transmission cable arranged in the balun to penetrate through so as to be connected with a corresponding feed sheet.
Further setting: and the base of the balun is provided with an installation hole position for connecting the balun and the reflecting plate.
Further setting: and a gap is formed between two adjacent vibrator arms, and the distance of the gap is defined to be related to the working bandwidth of the radiation unit.
Further setting: the radiation surface and the balun are integrally formed by metal die-casting.
As a second aspect, the present invention relates to an antenna, including the reflecting plate and the radiating element as described above, the radiating element includes a radiating surface and a balun, the balun bottom is provided with an installation hole site that can be used for with the reflecting plate is fixed with the help of a rivet, the radiating surface is parallel to the reflecting plate.
Compared with the prior art, the utility model discloses a scheme has following advantage:
1. the utility model discloses an among the radiating element, through offer hollow out construction on the radiating surface to the route of extension electric current, thereby the increase the radiating area of radiating surface to reduce the length of balun, shorten the distance of radiating surface to the reflecting plate, thereby can reduce the size restriction of antenna dustcoat, realized then the purpose that reduces the whole thickness of antenna, can guarantee the good parameter performance of antenna simultaneously, and radiating element's structural design is simple, easily volume production processing, and the small easy antenna design overall arrangement of size.
2. The utility model discloses an among the antenna, because radiating element's is small, it is few to occupy the reflecting plate space to easily structural layout, simple structure, the processing degree of difficulty is little, easily volume production, make the antenna adopt this radiating element to organize the battle array, each intercoupling is little, and each item radiating circuit performance with ensureing the antenna is good, and can realize the miniaturization of antenna effectively.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an embodiment of a radiation unit of the present invention;
fig. 2 is a schematic front view of an embodiment of the radiation unit of the present invention;
fig. 3 is a schematic side view of an embodiment of a radiation unit according to the present invention;
fig. 4 is a schematic structural diagram of a feed tab in an embodiment of the present invention;
FIG. 5 is a graph of voltage standing wave ratio.
In the figure, 1, a radiation unit; 11. a radiating surface; 111a, a first vibrator arm; 111b, a second vibrator arm; 111c, a third vibrator arm; 111d, a fourth vibrator arm; 112. a hollow structure; 12. a balun; 121. a support arm; 122. a base; 13. a feeding sheet; 131. connecting holes; 14. mounting hole sites; 15. a cyclic structure; 153. a cable pad; 154. a through hole; 2. a transmission cable; 21. an inner conductor.
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 by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
Please combine fig. 1 to fig. 4, the utility model relates to a radiating element 1, concretely relates to 3.5G base station antenna radiating element 1, its simple structure, the working bandwidth accords with 3300MHz ~ 3800MHz, and adopts the MIMO antenna of 1 many arrays of this radiating element group battle array small, and electric property is good, and the overall arrangement design is simple and easy, and the installation framework is convenient, is favorable to realizing the miniaturization of antenna.
The radiating unit 1 comprises a radiating surface 11, a balun 12 and a feed tab 13, wherein the radiating surface 11 comprises two pairs of oscillator arms which are perpendicularly and orthogonally arranged, so that the working requirement of +/-45-degree polarization orthogonality can be met; the balun 12 comprises four supporting arms 121 and four bases 122, the four supporting arms and the bases are respectively arranged corresponding to the two pairs of dipole arms one by one, the transmission cable 2 is installed on the balun 12 and feeds power to the radiation surface 11 through the feeding pieces, two feeding pieces 13 are arranged, one feeding piece 13 is used for connecting the dipole arms in the same polarization direction, and the other feeding piece 13 is used for connecting the dipole arms in the other polarization direction; the two transmission cables 2 are respectively positioned in the support arms 121 adjacent to the balun 12 and electrically connected with the radiation surface 11 through the feeding sheet 13.
Further, each oscillator arm of the radiation surface 11 is provided with a hollow structure 112, the hollow structure 112 can extend a current path of the oscillator arm, so that a radiation area of the radiation surface 11 can be increased, the length of the balun 12 is smaller than 20mm, and in addition, the purpose of shortening the balun 12 can be achieved by increasing a physical area of the radiation surface 11. The hollow structure 112 can also change the characteristic impedance of the radiation unit 1, thereby achieving the purpose of expanding the working bandwidth.
The utility model discloses an increase the radiating area of radiating surface 11 reduces balun 12's length adopts simultaneously feed piece 13 direct feed's mode makes balun 12's length is 16mm, compares with conventional 3.5G antenna element length and has shortened about 20%, thereby can shorten distance between radiating surface 11 and the reflecting plate has then reduced the size restriction of antenna dustcoat to reach the mesh that reduces the whole volume of antenna. When the length of the balun 12 is reduced, the area of the radiating surface 11 is increased, so that the size of the antenna is reduced, and good parameter performance of the antenna can be guaranteed.
Referring to fig. 1, in the feeding manner of the radiation unit 1, two feeding plates 13 are specifically used to connect two dipole arms located in the same polarization direction, the two feeding plates 13 are stacked up and down and are not in contact with each other, and connection holes 131 for facilitating welding are further disposed at two ends of the feeding plates 13. Furthermore, the feeding sheet 13 on the upper layer can adopt a U-shaped structure to solve the interference problem during cross welding, and the processing difficulty is reduced.
In addition, a step is formed at the connection position of the oscillator arm of the radiation surface 11 and the balun 12, and a ring structure 15 may be formed, and the bottom surface of the ring structure 15 is lower than the radiation surface 11, and the feeding tab 13 is placed in the ring structure 15, so as to prevent the feeding tab 13 from protruding out of the radiation surface 11 and being damaged by the outside.
Meanwhile, the oscillator arms corresponding to the same polarization direction in the annular structure 15 are respectively provided with a cable pad 153 and a through hole 154, the cable pad 153 is used for welding the balun 12 with an outer conductor of a transmission cable, and the through hole is used for an inner conductor of the transmission cable arranged in the balun 12 to pass through so as to be welded with a corresponding feed tab 13.
Specifically, the two pairs of dipole arms include a first dipole arm 111a, a second dipole arm 111b, a third dipole arm 111c and a fourth dipole arm 111d, the first dipole arm 111a and the third dipole arm 111c are located in the same polarization direction, and the second dipole arm 111b and the fourth dipole arm 111d are located in the other polarization direction. After the radiation unit 1 feeds power, the inner conductor 21 of the transmission cable 2 forms a feed structure with the first dipole arm 111a or the fourth dipole arm 111d through the through hole 154 and the feed tab 13, and the outer conductor of the transmission cable 2 forms a feed structure with the second dipole arm 111b and the third dipole arm 111c through the cable pad 153, so that they can be combined with each other to form a complete current loop, and have a small standing wave ratio and a wider operating bandwidth.
Furthermore, the radiating surface 11 with balun 12 adopts metal die-casting integrated into one piece, and the used oscillator of contrast conventional 3.5G antenna adopts PCB material direct feed scheme and metal die-casting form coupling feed to extend the work bandwidth and satisfies 3.5G antenna operation requirement mostly, the utility model discloses the oscillator adopts die-casting oscillator direct feed form scheme preparation, reduces the oscillator processing degree of difficulty and the equipment degree of difficulty, promotes batch production's speed and efficiency.
Further, two adjacent oscillator arms of the radiating surface 11 have a gap, and the distance of the gap is related to the operating bandwidth of the radiating element 1.
Meanwhile, the base 122 of the balun 12 is provided with an installation hole 14 for connecting with the reflector, and the installation hole 14 is preferably a rivet hole, so that a rivet can be used to penetrate through the reflector and be inserted into the installation hole 14, and the radiation unit 1 and the reflector can be installed and fixed.
The utility model discloses a radiating element 1 shortens the distance of radiating surface 11 and reflecting plate through the length that reduces balun 12 to can reduce the size restriction of antenna dustcoat, realize reducing the whole thickness's of antenna purpose. Meanwhile, through increasing the area of the radiation surface 11, adopting the prevention of direct feeding of the feeding sheet 13, arranging the hollow structure 112 on the vibrator arm and adjusting the distance between adjacent vibrator arms, the volume of the radiation unit 1 is reduced to reduce the volume of the antenna, and meanwhile, the good parameter performance of the antenna can be ensured, and the radiation unit 1 is simple in structural design, easy to produce in mass production, small in size and easy to design and arrange the antenna.
Referring to fig. 5, fig. 5 is a voltage standing wave ratio graph, and the voltage standing wave ratio is less than or equal to 1.30 in a 3.5G frequency band (3300 MHz-3800 MHz), which indicates that the coupling interference between the radiation unit 1 and the system is small.
The utility model discloses still relate to an antenna, it includes the reflecting plate (not shown in the figure, the same below) and as above radiating element 1, radiating element 1 includes radiating plane 11 and balun 12 to can realize then with the help of the rivet in order to pass the reflecting plate and insert the installation hole site 14 that the base 122 of balun 12 established radiating element 1 with the assembly of reflecting plate is fixed, and makes radiating plane 11 be on a parallel with the reflecting plate sets up.
Because the radiating unit 1 has small volume, occupies less space of a reflecting plate, is easy for structural layout, simple in structure, small in processing difficulty and easy for mass production, when the antenna adopts the radiating unit 1 for array formation, the mutual coupling among systems is small, so that the good performance of each radiating circuit of the antenna is ensured, and the miniaturization of the antenna can be effectively realized.
The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A radiation unit is suitable for a 3.5G base station antenna, and is characterized in that: including radiating surface, balun and feed piece, the radiating surface with balun connects, offer the hollow out construction who is used for increasing its radiating area on the radiating surface, the length of balun is less than 20mm, feed piece with the radiating surface is connected in order being used as the feed, the radiating surface includes the oscillator arm that two pairs of perpendicular orthogonality set up, feed piece is equipped with two and is used for connecting the oscillator arm that is located same polarization direction respectively, two feed piece stacks up from top to bottom and does not contact each other, is located the upper layer feed piece is the setting of U type structure.
2. The radiating element of claim 1, wherein: the balun is provided with four supporting arms and a base connected with the four supporting arms corresponding to the two pairs of oscillator arms.
3. The radiating element of claim 1, wherein: the connection positions of the two pairs of oscillator arms of the radiation surface and the balun form an annular structure, the bottom surface of the annular structure is lower than the radiation surface, and the feed sheet is arranged in the annular structure.
4. The radiating element of claim 3, wherein: the oscillator arms corresponding to the same polarization direction in the annular structure are respectively provided with a cable pad and a through hole, the cable pad is used for welding the balun and an outer conductor of a transmission cable, and the through hole is used for allowing an inner conductor of the transmission cable arranged in the balun to penetrate through so as to be connected with a corresponding feed sheet.
5. The radiating element of claim 2, wherein: and the base of the balun is provided with an installation hole position for connecting the balun and the reflecting plate.
6. The radiating element of claim 2, wherein: and a gap is formed between two adjacent vibrator arms, and the distance of the gap is defined to be related to the working bandwidth of the radiation unit.
7. The radiating element of claim 1, wherein: the radiation surface and the balun are integrally formed by metal die-casting.
8. An antenna, characterized by: the radiation unit comprises a reflecting plate and the radiation unit according to any one of claims 1 to 7, wherein the radiation unit comprises a radiation surface and a balun, the bottom of the balun is provided with an installation hole which can be fixed with the reflecting plate through a rivet, and the radiation surface is parallel to the reflecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922500601.XU CN212162071U (en) | 2019-12-31 | 2019-12-31 | Radiation unit and antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922500601.XU CN212162071U (en) | 2019-12-31 | 2019-12-31 | Radiation unit and antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212162071U true CN212162071U (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922500601.XU Expired - Fee Related CN212162071U (en) | 2019-12-31 | 2019-12-31 | Radiation unit and antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212162071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736428A (en) * | 2020-12-24 | 2021-04-30 | 京信通信技术(广州)有限公司 | Radiation unit and antenna |
-
2019
- 2019-12-31 CN CN201922500601.XU patent/CN212162071U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736428A (en) * | 2020-12-24 | 2021-04-30 | 京信通信技术(广州)有限公司 | Radiation unit and antenna |
| CN112736428B (en) * | 2020-12-24 | 2023-04-25 | 京信通信技术(广州)有限公司 | Radiating element and antenna |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201215 Termination date: 20211231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |