CN210926326U - Miniaturized ultra-wideband base station antenna unit - Google Patents
Miniaturized ultra-wideband base station antenna unit Download PDFInfo
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- CN210926326U CN210926326U CN201922453411.7U CN201922453411U CN210926326U CN 210926326 U CN210926326 U CN 210926326U CN 201922453411 U CN201922453411 U CN 201922453411U CN 210926326 U CN210926326 U CN 210926326U
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Abstract
The utility model discloses a miniaturized ultra wide band basic station antenna unit, include: the front surface of the dielectric plate is printed with a pair of half-wave vibrators placed at +/-45 degrees, and each half-wave vibrator is provided with a hexagonal groove for optimizing impedance matching; the tail end of the half-wave oscillator is provided with a metalized through hole for connecting a downward metal drooping column, the arrangement of the drooping column can prolong the current length, the bandwidth of the antenna is widened, and meanwhile miniaturization is achieved. The top end and the lower end of the first feed balun and the second feed balun are respectively provided with a rectangular bulge for connecting the radiator and the reflecting plate together. The front surfaces of the two feed baluns are printed with feed lines for feeding the two half-wave oscillators respectively, and the back surfaces of the two feed baluns are printed with grounding layers for grounding the radiators. And flanges which are turned upwards and outwards are arranged on two sides of the reflecting plate and are used for adjusting directional diagram parameters of the antenna.
Description
Technical Field
The utility model relates to the field of communication technology, especially, relate to a miniaturized ultra wide band base station antenna unit, in particular to cover miniaturized ultra wide band base station antenna unit of domestic and foreign frequency channel.
Background
The base station antenna, as a switching device between guided wave propagating on the transmission line of the wireless communication equipment and electromagnetic wave propagating in unbounded medium, plays an irreplaceable role for normal operation of the whole communication system. With the continuous development of mobile communication, coexistence of multiple mobile communication standards is a current major trend. The common working frequency bands of the current dual-polarized base station antenna are as follows: 1880-1920MHz, 2010-2025MHz, 2300-2400MHz TD-SCDMA, 1610-1880MHz DCS, 1850-1990MHz PCS, 1920-2160MHz UMTS, etc. In addition, some frequency bands are added abroad, including 1427 + 1518MHz, 1452 + 1492MHz, 2490 + 2690MHz, etc. Therefore, there is a need in the market for an antenna that can cover the 1427-2690MHz frequency bands.
A chinese patent application with publication No. CN109904593A discloses a frequency band enhanced dual-polarized base station antenna, which includes a reflection plate, a support structure, a radiation unit and a parasitic unit, wherein the radiation unit is fixed above the reflection plate through the support structure, and the parasitic unit is fixed above the radiation unit through an insulation column, and is characterized in that: the radiating unit comprises a dielectric substrate, and a first radiating arm, a second radiating arm, a third radiating arm and a fourth radiating arm which are positioned on the dielectric substrate, wherein the first radiating arm, the second radiating arm, the third radiating arm and the fourth radiating arm are rotationally symmetrical about the center of the radiating unit; the first radiating arm and the third radiating arm form a + 45-degree polarized oscillator, and the second radiating arm and the fourth radiating arm form a-45-degree polarized oscillator; the four radiation arms are respectively composed of a metal patch and a metal column which is positioned at a first position inward from the vertex angle of the metal patch, a gap which is symmetrical about a second position inward from the vertex angle of the metal patch and has a symmetrical structure is further formed at the second position inward from the vertex angle of the metal patch, the gap is provided with extension sections which are parallel to the edges of the metal patch, and the two symmetrical extension sections are intersected to form an opening facing the center of the radiation unit; the parasitic element comprises a circular metal sheet and four metal arms, wherein the four metal arms are rotationally symmetrical about the circular metal sheet; the four metal arms correspond to the positions of the four radiation arms. Although the antenna can cover the working frequency range of 1400MHz-2800MHz, the circular metal sheet arranged above the antenna causes the section of the antenna to be too high, and the height of the antenna is increased; meanwhile, the front and back of the antenna are poor, and the antenna does not have good directional diagram performance in a full frequency band.
Disclosure of Invention
An object of the utility model is to provide a miniaturized ultra wide band base station antenna unit that simple structure, stability, bore are littleer, can cover domestic and foreign frequency channel (1400 supple with electricity 3000 MHz).
In order to achieve the above purpose, the utility model adopts the following technical scheme.
A miniaturized ultra-wideband base station antenna unit, comprising: the antenna comprises a dielectric plate, a first feed balun, a second feed balun, a fixed base and a reflecting plate, wherein a pair of half-wave oscillators which are arranged at an angle of +/-45 degrees and used as radiating bodies of the antenna are printed on the front surface of the dielectric plate, and each half-wave oscillator is provided with a hexagonal groove for optimizing impedance matching; rectangular grooves are formed in the diagonal directions of the dielectric plate and the half-wave oscillator and used for inserting the feed balun, and the effect of fixing the radiator is achieved.
More preferably, a metalized via hole is formed at the tail end of each half-wave oscillator, and a downward metal drooping column is connected to the metalized via hole. The arrangement of the metal drooping column can prolong the current length, broaden the bandwidth of the antenna and realize miniaturization.
More preferably, the first feeding balun and the second feeding balun are orthogonally placed under the dielectric slab, and rectangular protrusions are respectively arranged at the top end and the lower end of the balun, so that the functions of supporting and fixing the upper-layer dielectric slab and the lower-layer dielectric slab can be achieved, and the radiator and the reflector plate are connected together.
More preferably, the front surfaces of the two feed baluns are printed with feed lines which respectively feed the two half-wave oscillators; and the back of the balun is printed with a grounding layer for grounding the radiator.
More preferably, the fixing base is disposed below the feeding balun, and a corresponding rectangular slot is formed at a diagonal position of the base for inserting the feeding balun to fix the antenna radiator.
More preferably, a metal reflecting plate is arranged below the fixed base, and the side surface of the metal reflecting plate is provided with a flange which is turned upwards and outwards and used for adjusting directional diagram parameters of the antenna.
The utility model adopts the beneficial effect that above-mentioned technical solution can reach is.
The mode of slotting on the square half-wave oscillator is adopted, the effective path of current is prolonged, the impedance matching of the antenna is optimized, the metalized through holes are used for connecting the metal drooping columns below the antenna, the effective current length of the half-wave oscillator is prolonged, the bandwidth of the antenna is expanded, the antenna covers a plurality of frequency bands containing the antenna at home and abroad, the caliber of the antenna is not increased, and the miniaturization of the antenna is realized. Through practical test, the utility model provides a base station antenna unit covers 1400 and supplys power 3000 MHz's operating frequency channel, has the ultra wide band characteristic, and possess good, stable directional diagram performance.
And secondly, the feed balun which is arranged in a crossed manner is respectively inserted into the radiator dielectric plate and the fixed base, so that the antenna is supported and fixed, has a stable structure, is easy to install and is simple and practical.
Drawings
Fig. 1 is a perspective view of the whole structure of the base station antenna unit provided by the present invention.
Fig. 2 is a schematic structural diagram of the radiator of the present invention.
Fig. 3 is a schematic diagram of a first feeding balun structure in the present invention.
Fig. 4 is a schematic diagram of a second feeding balun structure in the present invention.
Fig. 5 is a schematic structural view of the middle fixing base of the present invention.
Fig. 6 is the present invention provides a standing wave of the antenna unit of the base station.
Fig. 7 is the utility model provides a base station antenna unit isolation.
Fig. 8-10 are the directional diagrams of each frequency point of the base station antenna unit provided by the present invention, wherein fig. 8 is a 1.4GHz directional diagram, fig. 9 is a 2.2GHz directional diagram, and fig. 10 is a 2.8GHz directional diagram.
Reference numerals indicate the same.
1: main radiator, 2: first feeding balun, 3: second feeding balun, 4: fixed base, 5: a reflective plate.
1-1: main radiator dielectric plate, 1-2: half-wave oscillator, 1-3: hexagonal groove, 1-4: metallized via, 1-5: a metal drop post.
2-1: first feed balun dielectric plate, 2-2: feeder line, 2-3: ground plane, 2-4: and (4) a groove.
3-1: second feed balun dielectric plate, 3-2: feeder line, 3-3: ground plane, 3-4: and (4) a groove.
4-1: base dielectric plate, 4-2: metal patch, 4-3: a rectangular groove; 4-4: a first extension feed line; 4-5: a second extended feed line.
Detailed Description
In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.
The following description will be further made in conjunction with the accompanying drawings of the specification, so that the technical solution and the advantages of the present invention are clearer and clearer. The embodiments described below are exemplary and are intended to be illustrative of the present invention, but should not be construed as limiting the invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
As shown in fig. 1, a miniaturized ultra-wideband base station antenna unit includes a main radiator 1, a first feeding balun 2, a second feeding balun 3, a fixed base 4 and a reflection plate 5, where the first feeding balun 2 and the second feeding balun 3 are orthogonally disposed to feed two pairs of half-wave oscillators on the main radiator 1, respectively, so as to implement polarization in two perpendicular directions; the top and the bottom of the first feeding balun 2 and the second feeding balun 3 are respectively provided with two rectangular protrusions for fixing and connecting the radiator 1 and the base 4; the base 4 and the reflecting plate 5 are connected through a non-metal fixing piece.
In this embodiment, the non-metal part is a plastic rivet; the reflecting plate 5 is made of a square aluminum plate with the thickness of 1mm, and the side face of the reflecting plate is provided with flanges which are upward and bilateral, so that the radiation characteristic of the antenna unit is improved. The radiator 1, the base 4 and the reflecting plate 5 are square and parallel to each other; the first feed balun 2 and the second feed balun 3 are both rectangular with protrusions and are perpendicular to the radiator 1, the base 4 and the reflecting plate 5; the radiator 1, the first feeding balun 2, the second feeding balun 3 and the base 4 are all installed in the center of the reflector 5 and are symmetrical about the geometric center of the reflector 5.
Referring to fig. 2, the radiator 1 includes a radiator dielectric plate 1-1 and two pairs of half-wave resonators printed on an upper surface of the radiator dielectric plate 1-1, the radiator dielectric plate 1-1 employs an Arlon AD300A dielectric plate having a dielectric constant of 3.0 and a thickness of 0.8 mm; two pairs of half-wave vibrators on the radiator dielectric plate 1-1 are mutually orthogonally arranged and fed by corresponding balun so as to realize +/-45-degree polarization; each pair of half-wave vibrators consists of two symmetrical vibrators 1-2, and each vibrator 1-2 is provided with a hexagonal groove 1-3 for adjusting impedance matching; the tail ends of the two symmetrical oscillators 1-2 are provided with metalized through holes 1-4, and metal drooping columns 1-5 are connected downwards for widening the bandwidth and realizing miniaturization.
Referring to fig. 3, the first feeding balun 2 includes a first dielectric plate 2-1, a feeder 2-2 printed on an upper surface of the first dielectric plate 2-1, and two grounds 2-3 and 2-4 printed on a lower surface of the first dielectric plate 2-1, for feeding a corresponding half-wave oscillator on the radiator dielectric plate 1-1; the first dielectric plate 2-1 is an Arlon AD300A square dielectric plate with the dielectric constant of 3.0 and the thickness of 1 mm; the feeder line 2-2 is of a three-section microstrip line structure and is printed on the front surface of the first dielectric slab 2-1, and the ground plane 2-3 is printed on the back surface of the first dielectric slab. The top end and the lower end of the first dielectric plate 2-1 are respectively provided with two rectangular convex blocks for fixing and supporting the main radiator 1.
Referring to fig. 4, the second feeding balun 3 includes a second dielectric plate 3-1, a feeder 3-2 printed on an upper surface of the second dielectric plate 3-1, and two grounds 3-3 and 3-4 printed on a lower surface of the second dielectric plate 3-1, and is configured to feed a corresponding half-wave oscillator on the radiator dielectric plate 1-1; the second dielectric plate 3-1 is an Arlon AD300A square dielectric plate with the dielectric constant of 3.0 and the thickness of 1 mm; the feeder line 3-2 is of a three-section microstrip line structure and is printed on the front surface of the second dielectric slab 3-1, and the ground plane 3-3 is printed on the back surface of the second dielectric slab. The top end and the lower end of the second dielectric plate 3-1 are respectively provided with two rectangular convex blocks for fixing and supporting the main radiator 1.
Referring to fig. 5, the fixed base 4 includes a square base dielectric plate 4-1 and a metal patch 4-2 printed on the back surface of the base dielectric plate. Two rectangular grooves 4-3 are formed in the diagonal direction of the base dielectric plate 4-1 and used for mounting the first feeding balun 2 and the second feeding balun 3. The base dielectric plate 4-1 is printed with a first extension feeder 4-4 and a second extension feeder 4-5 which are connected with the feed balun feeder, and the antenna feeds power at the first extension feeder 4-4 and the second extension feeder 4-5, so that welding is facilitated. The reflecting plate 5 is made of metal materials, and flanges which are upward and toward two sides are arranged on the side face of the reflecting plate and are used for adjusting directional diagram parameters of the antenna.
Compared with the prior art, the miniaturized ultra-wideband base station antenna unit provided by the embodiment has the advantages that the effective path of current is prolonged, the bandwidth of the antenna is widened, a plurality of frequency bands at home and abroad can be covered, the miniaturization of the antenna is realized, and the miniaturized ultra-wideband base station antenna unit has high performance. Meanwhile, the main radiating body is connected with the fixed base through the rectangular protrusions on the feed balun, the fixed base is connected with the reflecting plate through the plastic rivets, and the LED lamp is stable in structure, easy to install and high in practicability.
It will be understood by those skilled in the art from the foregoing description of the structure and principles that the present invention is not limited to the specific embodiments described above, and that modifications and substitutions based on the known art are intended to fall within the scope of the invention, which is defined by the claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.
Claims (8)
1. A miniaturized ultra-wideband base station antenna unit, comprising: the front surface of the dielectric plate is printed with two pairs of half-wave oscillators placed at +/-45 degrees, each pair of half-wave oscillators consists of two symmetrical oscillators, the first feed balun and the second feed balun are orthogonally arranged and respectively feed the corresponding pair of half-wave oscillators, the fixed base is arranged in parallel with the dielectric plate and is respectively arranged at two ends of the first feed balun and the second feed balun, and the reflecting plate is connected with the fixed base; the oscillator is characterized in that each oscillator is provided with a hexagonal groove for optimizing impedance matching, the tail end of each oscillator is provided with a metalized through hole, and each metalized through hole is connected with a metal drooping column.
2. The antenna unit of claim 1, wherein rectangular grooves are formed in the dielectric plate and the fixing base, and rectangular protrusions matched with the rectangular grooves are arranged at the top and the bottom of the first feeding balun and the bottom of the second feeding balun.
3. The antenna unit of claim 1, wherein feeder lines are printed on the front surfaces of the first feeding balun and the second feeding balun, and respectively feed a corresponding pair of half-wave oscillators; and the back surfaces of the first feeding balun and the second feeding balun are printed with grounding layers for grounding the half-wave oscillator.
4. The antenna unit of claim 3, wherein the feed line is a three-segment microstrip line.
5. The antenna unit of claim 1, wherein the fixed base comprises a square base dielectric plate and a metal patch printed on the back of the base dielectric plate.
6. The antenna unit of claim 1, wherein the reflector is a metal reflector, and flanges turned upwards and outwards are provided on two sides of the metal reflector for adjusting the directional diagram parameters of the antenna.
7. The antenna unit of claim 1, wherein the fixing base and the reflection plate are fixed by a non-metal member.
8. The miniaturized ultra-wideband base station antenna unit of claim 7, wherein the non-metallic part is a plastic rivet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922453411.7U CN210926326U (en) | 2019-12-27 | 2019-12-27 | Miniaturized ultra-wideband base station antenna unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922453411.7U CN210926326U (en) | 2019-12-27 | 2019-12-27 | Miniaturized ultra-wideband base station antenna unit |
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| CN210926326U true CN210926326U (en) | 2020-07-03 |
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| CN201922453411.7U Active CN210926326U (en) | 2019-12-27 | 2019-12-27 | Miniaturized ultra-wideband base station antenna unit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952723A (en) * | 2020-09-08 | 2020-11-17 | 山东华箭科工创新科技有限公司 | 5G full-band printed log periodic antenna loaded with metal oscillator |
| CN112821045A (en) * | 2020-12-31 | 2021-05-18 | 京信通信技术(广州)有限公司 | Radiation unit and base station antenna |
| CN113471669A (en) * | 2021-07-02 | 2021-10-01 | 安徽大学 | 5G broadband dual-polarized base station antenna with multimode resonance structure |
| CN113777778A (en) * | 2021-08-13 | 2021-12-10 | 广东盛路通信科技股份有限公司 | Luneberg lens and parameter calculation method, preparation method and preparation device thereof |
| CN113948859A (en) * | 2021-11-01 | 2022-01-18 | 深圳市华信天线技术有限公司 | Microstrip antenna |
| CN114300835A (en) * | 2021-12-08 | 2022-04-08 | 杭州电子科技大学 | Broadband dual-polarized filter antenna suitable for base station |
| CN114464989A (en) * | 2022-01-11 | 2022-05-10 | 深圳麦赫科技有限公司 | Dual-frequency fusion antenna radiation unit |
| CN114824764A (en) * | 2022-05-28 | 2022-07-29 | 广东浩信通信科技有限公司 | High-gain ultra-wideband dual-polarized directional oscillator |
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2019
- 2019-12-27 CN CN201922453411.7U patent/CN210926326U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952723A (en) * | 2020-09-08 | 2020-11-17 | 山东华箭科工创新科技有限公司 | 5G full-band printed log periodic antenna loaded with metal oscillator |
| CN112821045A (en) * | 2020-12-31 | 2021-05-18 | 京信通信技术(广州)有限公司 | Radiation unit and base station antenna |
| CN113471669A (en) * | 2021-07-02 | 2021-10-01 | 安徽大学 | 5G broadband dual-polarized base station antenna with multimode resonance structure |
| CN113471669B (en) * | 2021-07-02 | 2023-10-13 | 安徽大学 | 5G broadband dual-polarized base station antenna with multimode resonance structure |
| CN113777778A (en) * | 2021-08-13 | 2021-12-10 | 广东盛路通信科技股份有限公司 | Luneberg lens and parameter calculation method, preparation method and preparation device thereof |
| CN113948859A (en) * | 2021-11-01 | 2022-01-18 | 深圳市华信天线技术有限公司 | Microstrip antenna |
| CN114300835A (en) * | 2021-12-08 | 2022-04-08 | 杭州电子科技大学 | Broadband dual-polarized filter antenna suitable for base station |
| CN114300835B (en) * | 2021-12-08 | 2024-02-09 | 杭州电子科技大学 | Broadband dual-polarized filter antenna suitable for base station |
| CN114464989A (en) * | 2022-01-11 | 2022-05-10 | 深圳麦赫科技有限公司 | Dual-frequency fusion antenna radiation unit |
| CN114824764A (en) * | 2022-05-28 | 2022-07-29 | 广东浩信通信科技有限公司 | High-gain ultra-wideband dual-polarized directional oscillator |
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Effective date of registration: 20220630 Address after: 528100 No. 4 Jinye Second Road, Southwest Industrial Park, Sanshui District, Foshan City, Guangdong Province Patentee after: GUANGDONG SHENGLU TELECOMMUNICATION TECH. Co.,Ltd. Patentee after: Guangdong Shenglu Communication Co., Ltd Address before: 528100 No. 4 Jinye Second Road, Southwest Industrial Park, Sanshui District, Foshan City, Guangdong Province Patentee before: GUANGDONG SHENGLU TELECOMMUNICATION TECH. Co.,Ltd. |