CN219040719U - Ultra-wideband low-frequency dual-polarized base station antenna radiating unit and antenna system - Google Patents
Ultra-wideband low-frequency dual-polarized base station antenna radiating unit and antenna system Download PDFInfo
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- CN219040719U CN219040719U CN202122767660.0U CN202122767660U CN219040719U CN 219040719 U CN219040719 U CN 219040719U CN 202122767660 U CN202122767660 U CN 202122767660U CN 219040719 U CN219040719 U CN 219040719U
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- 230000005855 radiation Effects 0.000 abstract description 43
- 238000004891 communication Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 22
- 238000004088 simulation Methods 0.000 description 5
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- 239000011521 glass Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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- -1 polytetrafluoroethylene Polymers 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model discloses an ultra-wideband low-frequency dual-polarized base station antenna radiating unit and an antenna system, and belongs to the field of wireless communication. The antenna radiating unit comprises a vibrator radiating surface, a substrate and a vibrator upper and lower feed which connects the vibrator radiating surface and the substrate; the oscillator radiation surface comprises two groups of radiation arms, and comprises four radiation oscillators, each radiation oscillator comprises a dielectric plate, a metal radiation strip line and a metal radiation sheet, wherein the metal radiation strip line and the metal radiation sheet are printed on the dielectric plate, a gap exists between the metal radiation strip line and the metal radiation sheet, the whole oscillator radiation surface forms a periodic back-shaped layout structure, and the metal radiation sheet is subjected to change processing only at a feed connection part. The oscillator radiation surface adopts a frequency selection surface form, realizes relative stealth of the lower high-frequency unit oscillator signal and self impedance matching by adjusting the position and the size of the 'back' shape, enhances decoupling between different frequencies, and can solve the problem of mutual interference between frequencies in the multi-frequency complex array antenna.
Description
Technical Field
The utility model belongs to the field of wireless communication, and relates to a base station antenna, in particular to an ultra-wideband low-frequency dual-polarized base station antenna radiating unit and an antenna system.
Background
The development of mobile communication technology is called as day-to-day, and the requirements for base station antennas are also becoming more stringent, and the base station antennas are developing toward multi-band and miniaturization. Under the requirement that a plurality of frequency bands coexist in the same base station antenna, under the condition that the space in the base station antenna is increasingly compact, mutual coupling caused by mutual interference among the frequency bands causes serious distortion of an original normal radiation pattern, and how to better overcome the problem becomes a key to be solved by antenna manufacturers.
Under the objective requirement of more and more compact space, the low-frequency radiating element can be placed above (right above or obliquely above) the high-frequency radiating element, so that the high-frequency radiating element with a good original directional diagram becomes discrete, and meanwhile, the high-frequency radiating element can also cause resonance and scattering of electromagnetic waves at the low-frequency radiating element, so that low-frequency wave beams are discrete, the directional diagram is deformed, and the two directional diagrams are mutually influenced, so that the antenna performance is rapidly deteriorated.
Disclosure of Invention
The utility model aims to: the utility model aims to provide an ultra-wideband low-frequency dual-polarized base station antenna radiating unit and an antenna system, which solve the problem that the radiation pattern is seriously deformed due to the mutual coupling between a low-frequency radiating unit and a high-frequency radiating unit under the current compact arrangement condition.
The technical scheme is as follows: in order to achieve the above purpose, the ultra-wideband low-frequency dual-polarized base station antenna radiating unit provided by the utility model comprises a vibrator radiating surface, a substrate and upper and lower feeds; the upper and lower feeds are connected with the oscillator radiation surface and the substrate; the oscillator radiation surface comprises two groups of radiation arms, each group of radiation arms comprises two radiation oscillators, each radiation oscillator comprises a dielectric plate, a metal radiation strip line and a metal radiation sheet, the metal radiation strip line and the metal radiation sheet are printed on the dielectric plate, a gap exists between the metal radiation strip line and the metal radiation sheet, a periodic 'back' shape layout structure is integrally formed, and the metal radiation sheet is subjected to beveling treatment only at the joint of the metal radiation sheet and a feed.
Preferably, the radiating surface of the vibrator is of a rectangular structure, and four radiating vibrators are symmetrical along the center.
Preferably, the metal radiating sheet is a square metal sheet.
Preferably, the oscillator radiating surface, the substrate and the up-down feed are all made of a PCB.
Preferably, the oscillator radiating surface is connected with the upper end of the upper feed and the upper end of the lower feed by welding, and the substrate is connected with the lower end of the upper feed and the lower end of the lower feed by welding.
The base station antenna system comprises a plurality of low-frequency radiating units and a plurality of high-frequency radiating units, wherein the low-frequency radiating units adopt the ultra-wideband low-frequency dual-polarized base station antenna radiating units and are arranged above the high-frequency radiating units.
Preferably, the low frequency radiating element and the high frequency radiating element are mounted on the base plates at different heights.
The beneficial effects are that: according to the ultra-wideband low-frequency dual-polarized base station antenna radiating unit provided by the utility model, the oscillator radiating surface adopts the form of a frequency selective surface (Frequency Selective Surface, FSS), and the impedance matching and the spatial filtering characteristics of the ultra-wideband dual-polarized base station antenna radiating unit can be optimized by adjusting the parameters such as the position, the size and the like of the Chinese character 'Hui'. The antenna is applied to the design of the multi-frequency base station antenna, can effectively reduce electromagnetic wave scattering caused by the low-frequency oscillator on the radiation surface of the high-frequency oscillator, greatly reduce the influence of the low-frequency oscillator on the directional diagram of the high-frequency oscillator, improve the directional diagram performance of the multi-frequency antenna and is very beneficial to the miniaturized design of the base station antenna. The ultra-wideband low-frequency dual-polarized base station antenna radiating unit adopts a PCB (printed circuit board) form, has a simple structure, can improve the production efficiency and consistency, and is convenient for mass production of the antenna.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is an exploded view of the structure of the present utility model;
FIG. 3 is a schematic structural diagram of a radiating surface of a vibrator according to the present utility model;
FIG. 4 is an enlarged partial schematic view of FIG. 3;
fig. 5 is a schematic diagram of an antenna system according to the present utility model;
FIG. 6 is a schematic diagram (frequency 1.71 GHz) of a simulation according to the present utility model;
FIG. 7 is a schematic diagram of another simulation (frequency 2.3 GHz) provided by the present utility model;
fig. 8 is another simulation diagram (frequency 2.69 GHz) provided by the present utility model.
Fig. 9 is a schematic diagram of standing-wave ratio of an antenna radiation unit according to the present utility model.
Fig. 10 is a schematic diagram of S parameter of an antenna radiation unit according to the present utility model.
Fig. 11 is a schematic diagram of a simulation of an antenna radiation unit provided by the present utility model.
Detailed Description
In order that the utility model may be more clearly and intuitively elucidated, a detailed description will now be made with reference to the accompanying drawings.
The embodiment of the utility model provides an ultra-wideband low-frequency dual-polarized base station antenna radiating element, and fig. 1 and 2 show an overall structure schematic diagram of the antenna radiating element 1, comprising: the vibrator radiation surface 10, the upper power supply 20, the lower power supply 30, and the substrate 40 are each composed of a PCB (printed circuit board) board. The vibrator radiation surface 10 is manufactured by adopting an electronic printing technique by using an epoxy resin plate as a medium; the oscillator radiation surface 10 is connected with the upper ends of the upper and lower feeds 20 and 30 through welding, the upper and lower feeds 20 and 30 are made of polytetrafluoroethylene glass cloth materials and are manufactured through electronic printing, and the lower ends of the upper and lower feeds 20 and 30 are connected with the substrate 40 through welding.
Fig. 3 shows a schematic structural diagram of a radiating surface 10 of a transducer, which is composed of two sets of radiating arms, each set comprising two radiating transducers. The radiating oscillator is of a rectangular structure and consists of a dielectric plate 101, and periodically arranged metal radiating strips 102 and metal radiating sheets 103 printed on the dielectric plate 101. In between the metal radiating strip 102 and the metal radiating sheet 103 is a blank zone 104 (i.e. the PCB is copper free). The whole structure forms a periodical reverse-shaped layout structure, and only the feed welding part is subjected to change treatment (beveling is carried out on the metal radiating sheet 103). The present embodiment takes a square shape layout as an example, and may also be composed of other structural shapes, such as a circular ring shape, etc. The ultra-wideband low-frequency dual-polarized base station antenna radiating element with small coupling degree to the high-frequency (1695-2690 MHz) band can be well designed by reasonably adjusting the positions and the sizes of the metal radiating strip line 102 and the metal radiating sheet 103, so that the directional diagram of the high-frequency radiating element is kept stable, and the directional diagram deformity is avoided.
Fig. 5 is a schematic diagram of an antenna system provided by the present utility model, which is one of application scenarios of the ultra-wideband low-frequency dual-polarized base station antenna radiating element, and includes a plurality of antenna radiating elements 1 and 2, and an antenna large bottom plate 3 and an antenna small bottom plate 4. The working frequency band of the antenna radiation unit 2 is 1695-2690MHz, and the oscillator radiation surface of the antenna radiation unit 2 is already partially arranged below the antenna unit 1.
Fig. 6 to 8 show simulated schematic diagrams respectively, wherein in the diagrams, the without 1 is a simulated pattern of the pure high-frequency radiating unit 2, the with 1 is a high-frequency radiating pattern of the ultra-wideband low-frequency dual-polarized radiating unit 1, and the simulated patterns are respectively at 1.71GHz, 2.3GHz and 2.69GHz, and by comparing the patterns, the influence of the pattern of the ultra-wideband low-frequency dual-polarized radiating unit 1 introduced above the wideband high-frequency vibrator is slight, so that a very remarkable decoupling effect is achieved, and the radiation performance of the compact multi-frequency antenna can be effectively enhanced. Fig. 9 to 11 show an S standing wave, an isolation schematic diagram and a simulation radiation pattern of the low-frequency antenna radiation unit, respectively, so that the performance of the low-frequency antenna radiation unit is excellent in the low frequency band of 600-900 MHz.
Claims (7)
1. An ultra-wideband low-frequency dual-polarized base station antenna radiating unit comprises a vibrator radiating surface (10), a substrate (40) and upper and lower feeds (20, 30); the upper and lower feeds (20, 30) are connected with the oscillator radiating surface (10) and the substrate (40), and are characterized in that the oscillator radiating surface (10) is composed of two groups of radiating arms, each group of radiating arms comprises two radiating oscillators, each radiating oscillator comprises a dielectric plate (101), a metal radiating strip line (102) and a metal radiating sheet (103) which are printed on the dielectric plate, a gap exists between the metal radiating strip line (102) and the metal radiating sheet (103), a periodic 'back' shape layout structure is integrally formed, and the metal radiating sheet (103) is subjected to beveling treatment only at the joint of the feeding.
2. The ultra-wideband low-frequency dual-polarized base station antenna radiating element according to claim 1, characterized in that the element radiating surface (10) is rectangular in structure, four radiating elements being symmetrical along the center.
3. The ultra-wideband low-frequency dual-polarized base station antenna radiating element of claim 1, wherein the metallic radiating patch is a square metallic patch.
4. The ultra-wideband low-frequency dual-polarized base station antenna radiating element of claim 1, wherein the element radiating surface (10), the substrate (40) and the upper and lower feeds (20, 30) are all made of PCB boards.
5. The ultra-wideband low-frequency dual-polarized base station antenna radiating element according to claim 1, wherein the oscillator radiating surface (10) is connected to the upper end of the upper feed (20) and the upper end of the lower feed (30) by welding, and the substrate (40) is connected to the lower end of the upper feed (20) and the lower end of the lower feed (30) by welding.
6. A base station antenna system comprising a plurality of low frequency radiating elements (1) and a plurality of high frequency radiating elements (2), characterized in that the low frequency radiating elements (1) are arranged above the high frequency radiating elements (2) using ultra wideband low frequency dual polarized base station antenna radiating elements according to any of claims 1-4.
7. A base station antenna system according to claim 6, characterized in that the low frequency radiating element (1) and the high frequency radiating element (2) are mounted on a base plate of different heights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122767660.0U CN219040719U (en) | 2021-11-12 | 2021-11-12 | Ultra-wideband low-frequency dual-polarized base station antenna radiating unit and antenna system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122767660.0U CN219040719U (en) | 2021-11-12 | 2021-11-12 | Ultra-wideband low-frequency dual-polarized base station antenna radiating unit and antenna system |
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| CN219040719U true CN219040719U (en) | 2023-05-16 |
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| CN202122767660.0U Active CN219040719U (en) | 2021-11-12 | 2021-11-12 | Ultra-wideband low-frequency dual-polarized base station antenna radiating unit and antenna system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116960637A (en) * | 2023-09-21 | 2023-10-27 | 华南理工大学 | Low-profile dual-frequency fusion antenna based on dual-function structure and communication equipment |
-
2021
- 2021-11-12 CN CN202122767660.0U patent/CN219040719U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116960637A (en) * | 2023-09-21 | 2023-10-27 | 华南理工大学 | Low-profile dual-frequency fusion antenna based on dual-function structure and communication equipment |
| CN116960637B (en) * | 2023-09-21 | 2024-01-02 | 华南理工大学 | Low-profile dual-frequency fusion antenna based on dual-function structure and communication equipment |
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Denomination of utility model: An ultra wideband low-frequency dual polarization base station antenna radiation unit and antenna system Granted publication date: 20230516 Pledgee: Bank of China Limited by Share Ltd. Nanjing Jiangning branch Pledgor: NANJING ABY RF TECHNOLOGY Co.,Ltd. Registration number: Y2024980012555 |