CN109994817A - A kind of ultra wideband dual polarization antenna for base station - Google Patents
A kind of ultra wideband dual polarization antenna for base station Download PDFInfo
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- CN109994817A CN109994817A CN201910193361.5A CN201910193361A CN109994817A CN 109994817 A CN109994817 A CN 109994817A CN 201910193361 A CN201910193361 A CN 201910193361A CN 109994817 A CN109994817 A CN 109994817A
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- base station
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- 230000010287 polarization Effects 0.000 title claims abstract description 21
- 230000009977 dual effect Effects 0.000 title claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 43
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 239000004033 plastic Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 description 15
- 238000012360 testing method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 5
- 238000005388 cross polarization Methods 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 210000000720 eyelash Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/108—Combination of a dipole with a plane reflecting surface
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
Abstract
A kind of ultra wideband dual polarization antenna for base station, including first medium substrate, upper metal layers, lower metal layer, metallic reflection plate, coaxial line and support column；First medium substrate is supported in metallic reflection plate by least four support columns, and first medium substrate is by coaxial line direct feed；Upper metal layers and lower metal layer are respectively printed at the upper and lower surfaces of first medium substrate；Print two dipole antennas in cross-distribution respectively in upper metal layers and lower metal layer；The two electrode couple sub-antennas positioned at upper metal layers are corresponding with two electrode couple sub-antenna positions of lower metal layer are located at.The dipole antenna of cross-distribution is both sides' shape ring structure, introduces Three models, greatly expansion bandwidth, to realize ultra wide band characteristic；The dipole antenna of cross-distribution is twin nuclei, outer ring be it is rectangular, inner ring is annular, Three models is introduced, greatly expansion bandwidth, to realize ultra wide band characteristic.
Description
Technical field
The present invention relates to antenna works fields, and in particular to a kind of ultra wideband dual polarization antenna for base station.
Background technique
With the fast development of wireless communication technique, dual polarized antenna has been widely used in wireless communication system,
It is declined with the multipath effect of mitigation signal, improves channel capacity.In 2G/3G/4G base station applies, possess high isolation, high intersection
Broadband (1.7-2.7 GHz) dual polarized antenna of polarization ratio and stable half-power beam width (65 ± 5 °) generallys use, with
Meet stringent practical application request.With the appearance of the new wireless systems such as the 5th generation (5G) wireless communication system, research is set
The ultra wideband dual polarization antenna of meter covering 5G frequency range (3.4-3.6GHz) and 2G/3G/4G frequency range (1.7-2.7GHz) is compeled in eyebrow
Eyelash.Therefore, in order to reduce the installation volume and less processing cost of wireless telecom equipment, small design, broadband, high isolation
Degree, high cross polarization are than having become the challenge of antenna researcher with the antenna for base station for stablizing antenna pattern.Base station day
Line mainly has following three kinds of forms: micro-strip paster antenna, electromagnetic dipole antenna, cross dipole antenna.Micro-strip paster antenna
There are many disadvantages: bandwidth is difficult to meet 1.71-3.6GHz, higher cross polarization ratio, and directional diagram changes with frequency in frequency band
It is larger.Although electromagnetic dipole antenna is had excellent performance, structure is complicated, and volume is larger.Crossed dipoles is at present by widely
Applied to wireless communication system, because possessing following advantage: suitable bandwidth of operation, stable antenna pattern, plane
Change easy to process.However, the requirement with communication system gradually increases, there is the ultra wide band base station day of covering 2G/3G/4G/5G
Line remains the heat subject of research.
B.Feng et al. has delivered entitled " A on IEEE Access (vol.6, pp.36083-36091, Jul.2018)
Beamwidth Reconfigurable Antenna Array With Triple Dual-Polarized Magneto-
The article of Electric Dipole Elements " devises a kind of antenna for covering 1.7-3.6GHz based on electromagnetic dipole,
However, antenna structure is not planar structure, processing is complex, and radiating aperture is 65.9mm × 65.9mm, and the VSWR of antenna is
2.R.Wu et al. delivers entitled on Electron. Lett. (vol.54, no.10, pp.614-616, May 2018)
It is introduced in " Multi-mode broadband antenna for 2G/3G/LTE/5G wireless communication "
A kind of cross dipole antenna of couple feed, the antenna have bandwidth standing internal wave of the Three models in 1.7-3.6GHz than small
In 2, however, the antenna standing wave is also greater than 1.5.
Y.Cui et al. IEEE Trans.Antennas Propag. (vol.66, no.12, pp. 7368-7373,
Dec.2018 " Bandwidth Enhancement of a Broadband Dual-Polarized Antenna) has been delivered
A for 2G/3G/4G and IMT Base Stations " text, which uses posts above antenna surface fluting and antenna
Raw mode expands the beamwidth of antenna to 67%, however, antenna height is higher, antenna processing is complicated, and radiation pattern exists
1.7-2.7GHz frequency range in beam angle it is unstable.L.-H.Wen et al. is in IEEE Access (vol.6, pp.39725-
39733, Jul.2018) " A Wideband Dual-Polarized Antenna Using Shorted has been delivered
A Dipoles " text, the antenna feed structure feed short dipole, antenna size using coupling balun feed structure
Smaller, 49mm × 49mm, antenna height 35m, antenna is easy to process, and standing wave is less than 1.5, however, antenna is wider in high frequency wave beam,
Gain decline is obvious, and on the direction of primary radiation ± 60 °, cross polarization is poor.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of ultra wideband dual polarization antenna for base station, and specific technical solution is such as
Under: a kind of ultra wideband dual polarization antenna for base station, it is characterised in that: including first medium substrate (1), upper metal layers (2), lower layer
Metal layer (3), metallic reflection plate (4), coaxial line (5) and support column (6)；
The first medium substrate (1) is supported on the metallic reflection plate (4) by least four support columns (6), described
First medium substrate (1) is by coaxial line (5) direct feed；
The upper metal layers (2) and the lower metal layer (3) are respectively printed at the upper of the first medium substrate (1)
Surface and lower surface；
Print two dipoles in cross-distribution respectively in the upper metal layers (2) and the lower metal layer (3)
Sub-antenna；
The two electrode couple sub-antennas positioned at the upper metal layers (2) and two antithesis positioned at the lower metal layer (3)
Pole sub-antenna position is corresponding；
The dipole antenna include two be in mirror symmetry outer rectangular configuration, the first of two outer rectangular configurations
Angle is respectively connected together；
It is equipped with interior rectangular configuration in the outer rectangular configuration internal sleeve, first jiao of insertion of the interior rectangular configuration is described outer
In first jiao of rectangular configuration；
The both sides of first jiao of the outer rectangular configuration are immediately adjacent to positioned at the both sides of first jiao of the interior rectangular configuration.
To better implement the present invention, may further be: the spacing between two dipoles is using exponential curve graded junction
Structure.
Further: the dipole antenna includes two outer rectangular configurations in mirror symmetry, two outer rectangles
First jiao of structure is respectively connected together, and is equipped with ring structure in the outer rectangular configuration internal sleeve.
Further: the support column (6) is nylon plastic(s) column.
The invention has the benefit that first, the dipole antenna of cross-distribution is both sides' shape ring structure, introduces three kinds
Mode, greatly expansion bandwidth, to realize ultra wide band characteristic；
Second, the dipole antenna of cross-distribution is twin nuclei, outer ring be it is rectangular, inner ring is annular, introduces three kinds
Mode, greatly expansion bandwidth, to realize ultra wide band characteristic；
Third, the spacing between crossed dipoles use exponential curve grading structure, significantly improve the matching of antenna；
4th, crossed dipoles uses double-level-metal, and the upper lower metal layer of dielectric-slab respectively prints two pairs of crossed dipoles, rises
The effect of couple feed has been arrived, matching is greatly improved.
Detailed description of the invention
Fig. 1 is the side view of antenna in the embodiment of the present invention 1；
Fig. 2 is overall schematic after each section in Fig. 1 is decomposed；
Fig. 3 is the top view illustration of Fig. 1；
Emulation and the test result schematic diagram that Fig. 4 is the standing wave VSWR and isolation in embodiment 1；
Fig. 5 is emulation and the test result schematic diagram of the beam angle and gain in embodiment 1；
Fig. 6 is the horizontal plane radiation direction of tetra- frequency points of 1.7GHz, 2.7GHz, 3.4GHz, 3.6GHz in embodiment 1；
Fig. 7 is the side view of antenna in the embodiment of the present invention 2；
Fig. 8 is the top view illustration of Fig. 7；
Fig. 9 is emulation and the test result schematic diagram of the standing-wave ratio VSWR and isolation in embodiment 2；
Figure 10 is emulation and the test result schematic diagram of the beam angle and gain in embodiment 2；
Figure 11 is the horizontal plane radiation pattern of tri- frequency points of 2.4GHz, 3.5GHz, 5.5GHz in embodiment 2.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
As shown in Figure 1 to Figure 3, it is the specific structure in the present embodiment 1:
A kind of miniaturization dual polarization high-isolation antenna for base station, including FR-4 medium substrate 1, upper metal layers 2, under
Layer metal layer 3, metallic reflection plate 4, coaxial line 5 and nylon plastic(s) column 6；
FR-4 medium substrate 1 is supported in metallic reflection plate 4 by least four nylon plastic(s) columns 6, FR-4 medium substrate 1 by
5 direct feed of coaxial line；
Upper metal layers 2 and lower metal layer 3 are respectively printed at the upper and lower level of FR-4 medium substrate 1,2 He of upper metal layers
Lower metal layer 3 is connected by 8 Shorted posts 7, and the anode of coaxial line is connected with upper metal layers, passes through upper metal layers 2
The feed of transition metal band 8 arrives the anode of antenna, and the cathode of coaxial line is connected with lower metal layer 3.
It is in the dipole antenna of cross-distribution there are two being printed in upper metal layers 2 and lower metal layer 3.
Parameter used in Example 1 is that upper metal layers 2 are identical with the crossed dipoles size of lower metal layer 3, side
Overall length degree is 49mm, and upper lower metal layer prints two electrode couples of intersection, and the spacing between the dipole of intersection is therefrom
The heart becomes larger to edge, curve exponentially shape.FR-4 medium substrate 1 with a thickness of 1mm, dielectric constant 4.4.It
The distance of line to metallic reflection plate 4 is 35mm.The size of metallic reflection plate 4 is 145mm × 145mm.Coaxial line 5 is standard coaxial
Line, internal diameter 0.52mm.
Fig. 4 is the emulation and survey of the standing wave VSWR and isolation of invented miniaturization dual polarization high-isolation antenna
Test result schematic diagram.In the frequency range of 1.7-3.7GHz, the standing wave VSWR of antenna is less than 1.5, while isolation is greater than
The result of 28dB, emulation and test is coincide fine.
Fig. 5 is the horizontal plane beam angle of miniaturization dual polarization high-isolation antenna invented and antenna gain
Emulation and test result schematic diagram.In the frequency range of 1.7-2.7GHz, the wave beam of the antenna pattern of antenna in horizontal plane
For width at 65 ° or so, the gain of antenna is about 8.5dBi, and the result of emulation and test is coincide fine.
Fig. 6 for the miniaturization dual polarization high-isolation antenna invented 1.7GHz, 2.7GHz, 3.4GHz,
The antenna pattern of the horizontal plane of tetra- frequency points of 3.6GHz, the main polarization and cross polarization ratio of four frequency points are greater than 23dB, radiation
Directional diagram is stablized, and the result of emulation and test is coincide fine.
It is the specific structure in the present embodiment 2 as shown in Fig. 7 to Fig. 8:
The embodiment 2 is that it is in mirror image that the dipole antenna, which includes two, with respect to the distinguishing feature in embodiment 1
Symmetrical outer rectangular configuration, first jiao of two outer rectangular configurations is respectively connected together, in the outer rectangular configuration
Portion is arranged with ring structure.
The parameter of the present embodiment 2 is that upper metal layers 2 are identical with the crossed dipoles size of lower metal layer 3, and side length is total
Length is 35.2mm, and upper lower metal layer prints two electrode couples of intersection, and the spacing between the dipole of intersection is from center
It is become larger to edge, curve exponentially shape.Rogers-4350 medium substrate 1 with a thickness of 1mm, dielectric constant is
3.66.The distance of antenna to metallic reflection plate 4 is 19.5mm.The size of metallic reflection plate 4 is 80mm × 80mm.Coaxial line 5 is
Standard coaxial line, internal diameter 0.52mm.
Fig. 9 be the standing-wave ratio VSWR and isolation of invented miniaturization dual polarization high-isolation antenna emulation with
Test result schematic diagram.In the frequency range of 2.4-6.4GHz, less than 2, relative bandwidth reaches the standing-wave ratio VSWR of antenna
92%, while isolation is greater than 28dB, emulation and the result tested are coincide fine.
Figure 10 for the miniaturization dual polarization high-isolation antenna invented horizontal plane beam angle and antenna gain
Emulation and test result schematic diagram.In the frequency range of 2.4-5.85GHz, the wave of the antenna pattern of antenna in horizontal plane
Beam width is at 65 ° or so, and the gain of antenna is about 8.5dBi in low frequency band, and high-frequency band is declined, and emulates and test
As a result identical is fine.
Figure 11 is the miniaturization dual polarization high-isolation antenna invented in 2.4GHz, 3.5GHz, 5.5GHz, three
The main polarization and cross polarization ratio of the antenna pattern of the horizontal plane of a frequency point, three frequency points is greater than 23dB, and antenna pattern is steady
Fixed, the result of emulation and test is coincide fine.
Claims (4)
1. a kind of ultra wideband dual polarization antenna for base station, it is characterised in that: including first medium substrate (1), upper metal layers (2),
Lower metal layer (3), metallic reflection plate (4), coaxial line (5) and support column (6)；
The first medium substrate (1) is supported on the metallic reflection plate (4) by least four support columns (6), and described first
Medium substrate (1) is by coaxial line (5) direct feed；
The upper metal layers (2) and the lower metal layer (3) are respectively printed at the upper surface of the first medium substrate (1)
The lower surface and；
Print two dipole days in cross-distribution respectively in the upper metal layers (2) and the lower metal layer (3)
Line；
The two electrode couple sub-antennas positioned at the upper metal layers (2) and two electrode couples positioned at the lower metal layer (3)
Aerial position is corresponding；
The dipole antenna include two be in mirror symmetry outer rectangular configuration, the first jiao point of two outer rectangular configurations
It does not link together；
Interior rectangular configuration, first jiao of insertion outer rectangle of the interior rectangular configuration are equipped in the outer rectangular configuration internal sleeve
In first jiao of structure；
The both sides of first jiao of the outer rectangular configuration are immediately adjacent to positioned at the both sides of first jiao of the interior rectangular configuration.
2. a kind of ultra wideband dual polarization antenna for base station according to claim 1, it is characterised in that: between two dipoles
Away from using exponential curve grading structure.
3. a kind of ultra wideband dual polarization antenna for base station according to claim 1, it is characterised in that: the dipole antenna includes
Two outer rectangular configurations in mirror symmetry, first jiao of two outer rectangular configurations are respectively connected together, described outer
Rectangular configuration internal sleeve is equipped with ring structure.
4. a kind of ultra wideband dual polarization antenna for base station according to claim 1, it is characterised in that: the support column (6) is Buddhist nun
Imperial plastic column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910193361.5A CN109994817A (en) | 2019-03-14 | 2019-03-14 | A kind of ultra wideband dual polarization antenna for base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910193361.5A CN109994817A (en) | 2019-03-14 | 2019-03-14 | A kind of ultra wideband dual polarization antenna for base station |
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| CN109994817A true CN109994817A (en) | 2019-07-09 |
Family
ID=67130690
Family Applications (1)
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| CN201910193361.5A Pending CN109994817A (en) | 2019-03-14 | 2019-03-14 | A kind of ultra wideband dual polarization antenna for base station |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151957A (en) * | 2020-09-17 | 2020-12-29 | 宿迁学院 | 2G/3G/4G dual-polarized notch base station antenna |
| CN112151951A (en) * | 2020-09-17 | 2020-12-29 | 宿迁学院 | Double-zero-notch dual-polarized antenna for WLAN |
| GB2587229A (en) * | 2019-09-20 | 2021-03-24 | Airspan Ip Holdco Llc | A dipole antenna apparatus and method of manufacture |
| CN113410655A (en) * | 2021-06-10 | 2021-09-17 | 北京理工大学 | Ultra-wideband wave absorber with symmetrical G-shaped bending structure |
| CN113612021A (en) * | 2021-08-05 | 2021-11-05 | 东南大学 | Miniaturized 45-degree dual-polarized crossed dipole antenna |
| WO2022002257A1 (en) * | 2020-07-03 | 2022-01-06 | 华为技术有限公司 | Multi-band shared-aperture antenna and communication device |
| CN114122666A (en) * | 2021-11-18 | 2022-03-01 | 中信科移动通信技术股份有限公司 | Ultra-wideband dual-polarized filtering antenna |
| CN114744412A (en) * | 2022-04-25 | 2022-07-12 | 中天宽带技术有限公司 | Broadband dual-polarization directional antenna |
| CN115064868A (en) * | 2022-07-06 | 2022-09-16 | 杭州电子科技大学 | Dual-polarized crossed dipole transparent antenna |
| CN115313028A (en) * | 2022-08-17 | 2022-11-08 | 深圳市飞宇信科技有限公司 | Ultra-wideband antenna applied to 2G/3G/4G/5G frequency band |
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| CN103022641A (en) * | 2011-09-28 | 2013-04-03 | 东莞市晖速天线技术有限公司 | Base station antenna applicable to multi-system communication and wideband dual-polarized oscillator of base station antenna |
| CN104157961A (en) * | 2014-08-11 | 2014-11-19 | 国家电网公司 | Wideband dual-polarized antenna for mobile communication and radiation units thereof |
| CN108899645A (en) * | 2018-06-26 | 2018-11-27 | 重庆大学 | A kind of miniaturization dual polarization high-isolation antenna for base station |
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| CN103022641A (en) * | 2011-09-28 | 2013-04-03 | 东莞市晖速天线技术有限公司 | Base station antenna applicable to multi-system communication and wideband dual-polarized oscillator of base station antenna |
| CN104157961A (en) * | 2014-08-11 | 2014-11-19 | 国家电网公司 | Wideband dual-polarized antenna for mobile communication and radiation units thereof |
| CN108899645A (en) * | 2018-06-26 | 2018-11-27 | 重庆大学 | A kind of miniaturization dual polarization high-isolation antenna for base station |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11276935B2 (en) | 2019-09-20 | 2022-03-15 | Airspan Ip Holdco Llc | Dipole antenna apparatus and method of manufacture |
| GB2587229A (en) * | 2019-09-20 | 2021-03-24 | Airspan Ip Holdco Llc | A dipole antenna apparatus and method of manufacture |
| EP3796472A1 (en) * | 2019-09-20 | 2021-03-24 | Airspan Networks Inc. | A dipole antenna apparatus and method of manufacture |
| GB2587229B (en) * | 2019-09-20 | 2023-12-06 | Airspan Ip Holdco Llc | A dipole antenna apparatus and method of manufacture |
| WO2022002257A1 (en) * | 2020-07-03 | 2022-01-06 | 华为技术有限公司 | Multi-band shared-aperture antenna and communication device |
| CN112151951A (en) * | 2020-09-17 | 2020-12-29 | 宿迁学院 | Double-zero-notch dual-polarized antenna for WLAN |
| CN112151957A (en) * | 2020-09-17 | 2020-12-29 | 宿迁学院 | 2G/3G/4G dual-polarized notch base station antenna |
| CN112151957B (en) * | 2020-09-17 | 2022-08-05 | 宿迁学院 | 2G/3G/4G dual-polarized notch base station antenna |
| CN113410655A (en) * | 2021-06-10 | 2021-09-17 | 北京理工大学 | Ultra-wideband wave absorber with symmetrical G-shaped bending structure |
| CN113410655B (en) * | 2021-06-10 | 2022-06-03 | 北京理工大学 | Ultra-wideband wave absorber with symmetrical G-shaped bending structure |
| CN113612021A (en) * | 2021-08-05 | 2021-11-05 | 东南大学 | Miniaturized 45-degree dual-polarized crossed dipole antenna |
| CN114122666A (en) * | 2021-11-18 | 2022-03-01 | 中信科移动通信技术股份有限公司 | Ultra-wideband dual-polarized filtering antenna |
| CN114744412A (en) * | 2022-04-25 | 2022-07-12 | 中天宽带技术有限公司 | Broadband dual-polarization directional antenna |
| CN115064868A (en) * | 2022-07-06 | 2022-09-16 | 杭州电子科技大学 | Dual-polarized crossed dipole transparent antenna |
| CN115064868B (en) * | 2022-07-06 | 2024-04-16 | 杭州电子科技大学 | Dual-polarized cross dipole transparent antenna |
| CN115313028A (en) * | 2022-08-17 | 2022-11-08 | 深圳市飞宇信科技有限公司 | Ultra-wideband antenna applied to 2G/3G/4G/5G frequency band |
| CN115313028B (en) * | 2022-08-17 | 2023-09-01 | 深圳市飞宇信电子有限公司 | Ultra-wideband antenna applied to 2G/3G/4G/5G frequency bands |
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Application publication date: 20190709 |