CN107799896A - A kind of TD LTE smart antennas for applying to frequency range near 3500MHz - Google Patents
A kind of TD LTE smart antennas for applying to frequency range near 3500MHz Download PDFInfo
- Publication number
- CN107799896A CN107799896A CN201711192643.0A CN201711192643A CN107799896A CN 107799896 A CN107799896 A CN 107799896A CN 201711192643 A CN201711192643 A CN 201711192643A CN 107799896 A CN107799896 A CN 107799896A
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- 239000002184 metal Substances 0.000 claims abstract description 53
- 230000005855 radiation Effects 0.000 claims abstract description 22
- 238000003491 array Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005388 cross polarization Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01Q19/12—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 wherein the surfaces are concave
- H01Q19/17—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 wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
- H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
Abstract
The present invention relates to communication antenna technical field, and in particular to a kind of TD LTE smart antennas for applying to frequency range near 3500MHz, including metallic reflection plate, radiating element, metal divider wall, metal isolating bar, feeding network；Radiating element, metal divider wall, metal isolating bar are fixedly installed in metallic reflection plate front, and feeding network is weldingly connected with each radiating element respectively, is installed on the front or the back side of metallic reflection plate.It is only the low stripping face broadband paster radiating element for having the function that to reduce antenna beamwidth of 1/8 wavelength of operating center frequency from height.Specific metal separator is designed simultaneously as radiation border so that the high band antenna can obtain the wide beam of unit of 65 ° of ripples of superior performance in the case of using the array arrangement of conventional low frequency smart antenna.Based on this, using related measure, the amplitude of each prevention at radio-frequency port and the uniformity of phase are strictly controlled, the high band smart antenna can be made to obtain the synthesis wave beam such as the business of superior performance, broadcast.
Description
Technical field
The present invention relates to communication antenna technical field, and in particular to a kind of TD-LTE for applying to frequency range near 3500MHz
Smart antenna.
Background technology
It is based on 3GPP Long Term Evolutions (Time Division Long Term Evolution, abbreviation TD-LTE)
New generation broadband mobile communication wireless access technology, compared with the access technology of existing 2G, 3G GSM, it has
The features such as transmission rate is high, propagation delay time is small, high quality of service ensures.Intelligent antenna technology is the key technology of TD-LTE system
One of, it introduces space division multiple access (SDMA) mode, using difference of the signal in transmission, is distinguished by same frequency or with time slot
Come, maximally utilise limited channel resource.Compared with non-directional antenna, shaped-beam is pointed to and used by smart antenna
Family, the gain of upper and lower link is improved, reduce the interference between user and user, improve signal to noise ratio and power system capacity.One
Secondary high performance smart antenna, huge benefit will be produced to the covering quality of TD-LTE networks.
Currently, the existing smart antenna product in domestic market, primarily directed to the TD-SCDMA and TD- of Domestic Carriers
Designed by LTE, covering frequency range includes F frequencies (1880-1920MHz), A frequencies (2010-2025MHz) and D frequencies (2575-2635MHz).
And in overseas, particularly there is the substantial amounts of market demand Middle East to the smart antenna of frequency range near 3500MHz at present.Communication system
The frequency of work is higher, it is meant that the technical requirements of smart antenna product are also higher, and related performance indicators realize that difficulty is also got over
It is high.
The content of the invention
Therefore, in view of said circumstances, the present invention propose a kind of TD-LTE intelligence day for applying to frequency range near 3500MHz
Line.Including metallic reflection plate, radiating element, metal divider wall, metal isolating bar, feeding network；Radiating element, metal isolation
Wall, metal isolating bar are fixedly installed in metallic reflection plate front, and feeding network is weldingly connected with radiating element, and to be installed on metal anti-
Penetrate on plate.
Further, the lateral radiating surface opposite direction bending of the metallic reflection plate two, is inverted U shape structure；
The feeding network is weldingly connected with radiating element and is installed on the front or the back side of metallic reflection plate.
Further, the radiating element includes radiation metal patch, ground connection flat board, oscillator feed tab；
Radiation metal patch is suspended from above ground connection flat board, and both are fixedly connected by oscillator feed tab.
Further, spacing is antenna radiation unit between radiating the upper surface of metal patch and being grounded the lower surface of flat board
Whole height；
The whole height of the beta radiation unit is 1/8 wavelength of operating center frequency.
Further, two oscillator feed tabs are fed by way of coupling to radiation metal patch respectively, are formed
Two orthogonal ± 45 ° polarized radiation combinations.
Further, TD-LTE smart antenna arrays be classified as etc. quantity radiating element be parallel to each other respectively along four it is straight
Line, equidistantly arrangement, spacing D1；
The D1 is 3800MHz 0.8 times of wavelength；
The array is the first array Array1, the second array Array2, the 3rd array Array3, the 4th array Array4
Four array antenna arrays.
Further, the level interval between the array is D2；
The D2 is 1/2 wavelength of Antenna Operation centre frequency；
Correspondingly, adjacent array along array direction misplace D1/2 spacing.
Further, the metal divider wall is divided into the metal divider wall of L-type and skewed metal divider wall, height height
In the radiating element whole height；
The metal divider wall of the L-type is installed between adjacent array, and quantity is three；
The skewed metal divider wall is installed on the both sides of four array antenna arrays, and quantity is two；
The metal isolating bar is arranged between vertically adjacent radiating element, and setting height(from bottom) is higher than radiating element
Whole height；
Further, the feeding network includes phase shifter, calibration circuit board, coaxial cable；Phase shifter is fixedly installed in
Metallic reflection back, calibration circuit board are fixedly installed in metallic reflection plate front.Radiating element and phase shifter, phase shifter and school
Quasi- circuit board is all weldingly connected using coaxial cable.
Correspondingly, the phase shifter enters the passive device having more for one；
The calibration circuit board includes the work(such as at least one and divides Wilkinson power divider and at least one microstrip directional coupling
Clutch.
Further, TD-LTE smart antennas working frequency range is 3300-3800MHz.
Compared with prior art, the invention has the advantages that：
A kind of TD-LTE smart antennas for applying to frequency range near 3500MHz, it is only operating center frequency from height
The low stripping face broadband paster radiating element for having the function that to reduce antenna beamwidth of 1/8 wavelength.Design simultaneously specific
Metal separator is as radiation border so that the high band antenna can be in the array arrangement using conventional low frequency smart antenna
In the case of, obtain the wide beam of unit of 65 ° of ripples of superior performance.Based on this, using related measure, each penetrate strictly is controlled
The amplitude of frequency port and the uniformity of phase, the high band smart antenna can be made to obtain the synthesis such as the business of superior performance, broadcast
Wave beam.
Currently, the existing smart antenna product in domestic market, primarily directed to the TD-SCDMA and TD- of Domestic Carriers
Designed by LTE, covering frequency range includes F frequencies (1880-1920MHz), A frequencies (2010-2025MHz) and D frequencies (2575-2635MHz),
The smart antenna designed for 3300-3800MHz frequency ranges is there is no, the present invention proposes to have filled up domestic related blank.
A kind of TD-LTE smart antennas for applying to frequency range near 3500MHz of present invention proposition, its function admirable, at home
Still category is pioneering.
Brief description of the drawings
Fig. 1 is inventive antenna entirety positive structure schematic；
Fig. 2 is radiative unit structure schematic diagram of the present invention；
Fig. 3 is inventive antenna entirety structure schematic diagram；
Fig. 4 is that inventive antenna structure illustrates schematic diagram；
Description of reference numerals：
1- metallic reflection plates；2- radiating elements；3- metal divider walls；4- metal isolating bars；5- phase shifters；6- calibrates circuit
Plate；7- coaxial cables；8- feeding networks；201- radiates metal patch；202- is grounded flat board；203- oscillator feed tabs；D- arrays
Spacing.
Embodiment
For ease of being better understood from the purpose of the present invention, structure and function etc., in conjunction with accompanying drawing and specific embodiment party
The invention will be further described for formula.
As Figure 1 and Figure 4, a kind of TD-LTE smart antennas for applying to frequency range near 3500MHz, it is characterised in that bag
Include metallic reflection plate 1, radiating element 2, metal divider wall 3, metal isolating bar 4, feeding network 8；Radiating element 2, metal isolation
Wall 3, metal isolating bar 4 are fixedly installed in the front of metallic reflection plate 1, and feeding network 8 is weldingly connected with each radiating element respectively,
It is installed in metallic reflection plate 1 front and the back side；
The lateral radiating surface opposite direction bending of 1 liang of metallic reflection plate, is inverted U shape structure, and the structure is suppressing array antenna
Backward radiation energy, improve front and rear compare；Two sides form reinforcing rib structure simultaneously, play booster action to reflecting plate, improve antenna
Overall structure performance.
As shown in Fig. 2 radiating element 2 is a kind of low stripping face broadband paster radiating element of existing patent, radiation is included
Metal patch 201, ground connection flat board 202 and the oscillator feed tab 203 being made up of microstrip circuit.Radiation metal patch 201 is suspended from
The top of flat board 202 is grounded, both are fixedly connected by oscillator feed tab 203.Upper surface and the ground connection for radiating metal patch 201 are flat
The lower surface of plate 202 is the whole height of antenna radiation unit, about 1/8 wavelength of operating center frequency.Two oscillators
Feed tab 203 is fed by way of coupling to radiation metal patch 201 respectively, to form two orthogonal ± 45 ° pole
Change radiating composite.
TD-LTE intelligent antenna arrays are arranged：Etc. quantity radiating element 2 respectively along four straight lines being parallel to each other etc.
Spacing arranges, and space D 1 is 3800MHz 0.8 times of wavelength, to form four array antenna arrays, i.e. the first array Array1, second
Array Array2, the 3rd array Array3, the 4th array Array4.It is identical with normal procedure intelligent antenna, the water between adjacent array
Flat space D 2 be Antenna Operation centre frequency 1/2 wavelength, adjacent array along array direction misplace D1/2 spacing.
Metal divider wall 3 is divided to metal divider wall 3a and two kinds skewed of metal divider wall 3b for L-type.Three L-types
Metal divider wall 3a is installed between adjacent array, and two skewed metal divider wall 3b are installed on the two of four array antenna arrays
Side, highly it is above the whole height of radiating element 2.The metal isolating bar 4 is arranged at vertically adjacent radiation
Between unit, its setting height(from bottom) is higher than the whole height of radiating element 2.Arrangement above, can improve the same polarization of smart antenna with
Heteropolar isolation, and the index such as the cross polarization discrimination of radiance, Sector Power accounting.
The height of radiating element 2 is 1/8 wavelength of operating center frequency, is only the half of general conventional half-wave dipole, is
It is a kind of that there is the paster radiating element for reducing the beamwidth of array antenna.The selection of radiating element 2 is set with particular radiation border
Meter, may be such that smart antenna in the case of above-mentioned array arrangement, obtain the wide list of 65 ° of horizontal ripples of required function admirable
First wave beam；And beam of unit performance is the important foundation of the synthesis wave beam performance such as business beam, broadcast beam.
As shown in Figure 3, Figure 4, feeding network 8 includes phase shifter 5, calibration circuit board 6 and coaxial cable 7.Phase shifter 5 is one
Entering the passive device having more, a used phase shifter 5 is actual to have two phase-shift systems, four phase shifter PS1, PS2,
PS3, PS4 each delivery outlet by coaxial cable 7 respectively with the first array Array1, the second array Array2, the 3rd array
Each radiating element in Array3, the 4th array Array4 is weldingly connected, and eight total input ports of four phase shifters are also through same
Shaft cable 7 is weldingly connected with calibration circuit board 6, respectively formed Port1, Port5, Port2, Port6, Port3, Port7,
The prevention at radio-frequency port such as Port4, Port8.
Include the work(such as multiple in the calibration circuit board 6 and divide Wilkinson power divider and multiple microstrip directional couplers,
The calibration port PortC therefrom drawn calibrates to the amplitude of each prevention at radio-frequency port with phase, makes their being consistent property.
Preferably, compared with the smart antenna of the low-frequency range of routine, the calibration circuit board 6 is using the higher isolation of precision
Resistance can improve the index of antenna complete machine amplitude and phase equalization with grounding resistance.
Preferably, eight microstrip directional couplers in calibration circuit board 6 are provided with corresponding debugging detail, to intelligence
The debugging of the index of all prevention at radio-frequency port amplitudes of antenna and phase equalization.
Preferably, eight N-type radio frequency ports of antenna are connected by coaxial cable 7 with calibration circuit board 6, this eight sections of coaxial electricals
Cable need to strictly be tested by instrument keeps electrical length consistent, to ensure the amplitude and phase equalization of all prevention at radio-frequency port of antenna
Index.
Preferably, TD-LTE smart antennas working frequency range proposed by the present invention is 3300-3800MHz.
A kind of TD-LTE smart antennas for applying to frequency range near 3500MHz, it is only operating center frequency from height
The low stripping face broadband paster radiating element for having the function that to reduce antenna beamwidth of 1/8 wavelength.Design simultaneously specific
Metal separator is as radiation border so that the high band antenna can be in the array arrangement using conventional low frequency smart antenna
In the case of, obtain the wide beam of unit of 65 ° of horizontal ripples of superior performance.Based on this, it is each using related measure, strict control
The amplitude of individual prevention at radio-frequency port and the uniformity of phase, the high band smart antenna can be made to obtain the business of superior performance, broadcast etc.
Synthesize wave beam.
Currently, the existing smart antenna product in domestic market, primarily directed to the TD-SCDMA and TD- of Domestic Carriers
Designed by LTE, covering frequency range includes F frequencies (1880-1920MHz), A frequencies (2010-2025MHz) and D frequencies (2575-2635MHz),
The smart antenna designed for 3300-3800MHz frequency ranges is there is no, the present invention proposes to have filled up domestic related blank.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of TD-LTE smart antennas for applying to frequency range near 3500MHz, it is characterised in that including metallic reflection plate, spoke
Penetrate unit, metal divider wall, metal isolating bar, feeding network；Radiating element, metal divider wall, metal isolating bar are fixedly mounted
In in metallic reflection plate, feeding network is weldingly connected with radiating element and is installed in metallic reflection plate.
2. a kind of TD-LTE smart antennas for applying to frequency range near 3500MHz according to claim 1, its feature exist
In the lateral radiating surface opposite direction bending of metallic reflection plate two, being inverted U shape structure；
The feeding network is weldingly connected with radiating element and is installed on the front or the back side of metallic reflection plate.
3. a kind of TD-LTE smart antennas for applying to frequency range near 3500MHz according to claim 1, its feature exist
In the radiating element includes radiation metal patch, ground connection flat board, oscillator feed tab；
Radiation metal patch is suspended from above ground connection flat board, and both are fixedly connected by oscillator feed tab.
4. a kind of TD-LTE smart antennas for applying to frequency range near 3500MHz according to claim 3, its feature exist
In it is the whole height of antenna radiation unit to radiate spacing between the upper surface of metal patch and the lower surface of ground connection flat board；
The whole height of the radiating element is 1/8 wavelength of operating center frequency.
5. a kind of TD-LTE smart antennas for applying to frequency range near 3500MHz according to claim 3, its feature exist
In two oscillator feed tabs are fed by way of coupling to radiation metal patch respectively, form two orthogonal ± 45 °
Polarized radiation is combined.
6. a kind of TD-LTE smart antennas for applying to frequency range near 3500MHz according to claim 1, its feature exist
In the quantity radiating elements such as aerial array is are respectively along four straight lines being parallel to each other, equidistantly arrangement, spacing D1；
The D1 is 3800MHz 0.8 times of wavelength；
The array is the first array Array1, the second array Array2, the 3rd array Array3, the 4th array Array4 tetra- are arranged
Aerial array.
7. a kind of TD-LTE smart antennas for applying to frequency range near 3500MHz according to claim 6, its feature exist
In the level interval between the array is D2；
The D2 is 1/2 wavelength of Antenna Operation centre frequency；
Correspondingly, adjacent array along array direction misplace D1/2 spacing.
8. a kind of TD-LTE smart antennas for applying to frequency range near 3500MHz according to claim 1, its feature exist
In the metal divider wall is divided into the metal divider wall of L-type and skewed metal divider wall, and height is all single higher than the radiation
First whole height；
The metal divider wall of the L-type is installed between adjacent array, and quantity is three；
The skewed metal divider wall is installed on the both sides of four array antenna arrays, and quantity is two；
The metal isolating bar is arranged between vertically adjacent radiating element, and setting height(from bottom) is overall higher than radiating element
Highly.
9. a kind of TD-LTE smart antennas for applying to frequency range near 3500MHz according to claim 1, its feature exist
In the feeding network includes phase shifter, calibration circuit board, coaxial cable；Phase shifter is fixedly installed in metallic reflection back,
Calibration circuit board is fixedly installed in metallic reflection plate front, and radiating element and phase shifter, phase shifter and calibration circuit board all use
Coaxial cable is weldingly connected.
Correspondingly, the phase shifter enters the passive device having more for one；
The calibration circuit board includes the work(such as at least one and divides Wilkinson power divider and at least one microstrip directional coupler.
A kind of 10. special dual-polarization radiating unit of smart antenna according to claim 1, it is characterised in that TD-LTE
Smart antenna working frequency range is 3300-3800MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711192643.0A CN107799896A (en) | 2017-11-24 | 2017-11-24 | A kind of TD LTE smart antennas for applying to frequency range near 3500MHz |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711192643.0A CN107799896A (en) | 2017-11-24 | 2017-11-24 | A kind of TD LTE smart antennas for applying to frequency range near 3500MHz |
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| CN107799896A true CN107799896A (en) | 2018-03-13 |
Family
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258422A (en) * | 2018-03-22 | 2018-07-06 | 江苏亨鑫科技有限公司 | A kind of aerial array based on passive decoupling technique |
| CN109149128A (en) * | 2018-09-05 | 2019-01-04 | 武汉虹信通信技术有限责任公司 | A kind of 5G large scale array antenna |
| CN109149108A (en) * | 2018-09-05 | 2019-01-04 | 武汉虹信通信技术有限责任公司 | A kind of isolator and mimo antenna |
| CN110943295A (en) * | 2019-11-25 | 2020-03-31 | 武汉虹信通信技术有限责任公司 | Multi-beam antenna array, base station antenna and antenna array decoupling method |
| CN111048904A (en) * | 2019-12-10 | 2020-04-21 | 瑞声精密制造科技(常州)有限公司 | Antenna with a shield |
| WO2021068437A1 (en) * | 2019-10-08 | 2021-04-15 | 摩比天线技术（深圳）有限公司 | 5g-antenna integrated network apparatus |
| EP4016730A1 (en) * | 2020-12-21 | 2022-06-22 | CommScope Technologies LLC | Base station antenna and board assembly for base station antenna |
| CN117175207A (en) * | 2023-09-27 | 2023-12-05 | 普罗斯通信技术（苏州）有限公司 | Antenna |
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| CN106961010A (en) * | 2017-04-27 | 2017-07-18 | 深圳国人通信股份有限公司 | A kind of three frequency Bipolarization antenna for base station |
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