CN110492239A - A kind of three polarization car antennas applied to 5G-V2X car networking communication system - Google Patents
A kind of three polarization car antennas applied to 5G-V2X car networking communication system Download PDFInfo
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- CN110492239A CN110492239A CN201910825754.3A CN201910825754A CN110492239A CN 110492239 A CN110492239 A CN 110492239A CN 201910825754 A CN201910825754 A CN 201910825754A CN 110492239 A CN110492239 A CN 110492239A
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- slab
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- circular media
- square dielectric
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
-
- 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
-
- 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
- H01Q1/48—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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
-
- 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
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
- H01Q9/285—Planar dipole
Abstract
The present invention provides a kind of three polarization car antennas applied to 5G-V2X car networking communication system, including circular media plate, square dielectric-slab, feed structure, eight groups of inverted L-shaped units；Circular media plate is set to below square dielectric-slab, and omnidirectional radiation unit is equipped among the circular media plate, is responsible for the direct-connected communications band of 5.85-5.925GHz；Square dielectric-slab, above the omnidirectional radiation unit of circular media plate, square dielectric-slab center and circular media plate center are on same vertical center line, and the area of square dielectric-slab is less than the area of circular media plate, the square dielectric-slab is equipped with directional radiation unit, it is responsible for 3.30-3.60GHz, the directed radiation of 4.80-5.00GHz frequency range inner width covering surface.The antenna is provided simultaneously with three polarization, low-cross polarization, high port isolation, Directed radiation modes broad beam, the low out-of-roundness of omni directional radiation pattern, and the characteristic of higher gain is realized in azimuthal plane, meets 5G-V2X requirement.
Description
[technical field]
The present invention relates to 5G antenna technical fields, and in particular to a kind of three poles applied to 5G-V2X car networking communication system
Change car antenna.
[background technique]
The fast development of 5G technology pushes the further update of car networking to upgrade, the real time information required for automatic Pilot
Interaction provides necessary guarantee.The C-V2X communication technology (V2X: vehicle is to all things on earth, Vehicle-to-everything) includes LTE-
V2X and 5G-V2X, LTE-V2X technology relative maturity at present, the year two thousand twenty technology will be formally Chinese commercial.It is drilled from technology
Into angle, LTE-V2X supports that, to 5G-V2X smooth evolution, 5G-V2X will overcome the problems, such as LTE-V2X low time delay, and further mention
The reliability of high communication system also provides crucial technical support to solve the safety problem of automatic Pilot technology.C-V2X communication
Technology includes cellular communication Uu interface and direct-connected communication PC5 interface, serves vehicle respectively and passes through the communication of base station, vehicle and vehicle or vehicle
With the direct communication of roadside equipment.
Existing car networking car antenna design scheme mainly has: 1) being complementarily shaped to approximate omnidirectional's spoke using multiple directional aerials
The directional diagram penetrated, but integral radiation gain is uneven；2) all standing of frequency band is realized using super-broadband tech, but in ultra wide bandwidth
Interior, antenna pattern is unstable, is received and dispatched for two kinds of interfaces are unified with Directed radiation modes, coverage area is inadequate.3) monopole is used
Sub- omnidirectional antenna covers 5.9GHz frequency range, or even widens frequency band while covering WLAN frequency range.But this design is usually taper
Radiation, the wave beam and azimuthal plane of radiation form a higher elevation angle, so that the gain in azimuthal plane is very low.
In view of the direct-connected communication of vehicle and vehicle, vehicle and roadside equipment occurs mainly on horizontal plane, and cellular communication is main
Occur between base station in vehicle and remotely, if use omni directional radiation pattern or directed radiation that two kinds of communication modes are single
Mode, without specific aim, the utilization rate of power is not high.
Double wide face directional aerials and omnidirectional antenna all have the characteristics that coverage area is big, can adapt to car antenna height
Speed is mobile, application scenarios complicated and changeable, and according to the communication object in practical application, controlling different radiation modes can be from hard
The angle of part improves communication quality, and improves power utilization.The spatial dimension that car antenna is placed is limited, so usually requiring that
Car antenna can be realized multiple functions, keep antenna as compact as possible.Under these conditions, enable the isolation between different port most
It may be high, it is ensured that influencing each other between the various functions of antenna is as small as possible.Modern base station be substantially all be configured with it is bipolar
Change antenna, if car antenna also has dual polarization function, channel capacity can exponentially extend, to improve the benefit of working frequency range
With rate.It can be seen that a high-isolation three polarizes, biradial mode antenna can adapt to the requirement of the following 5G-V2X.
[summary of the invention]
Orientation spoke can be passed through in 3.30-3.60GHz and 4.80-5.00GHz frequency range it is an object of the present invention to provide a
Penetrate with 5G base station communication, and pass through the day that omnidirectional radiation realizes vehicle and vehicle, vehicle and road side facility direct communication in 5.9GHz frequency range
Line.
Technical scheme is as follows:
A kind of three polarization car antennas applied to 5G-V2X car networking communication system, including circular media plate, rectangular Jie
Scutum, feed structure, eight groups of inverted L-shaped units；
Circular media plate is set to below square dielectric-slab, and the circular media plate is equipped with omnidirectional radiation unit, is responsible for
5.85-5.925GHz direct-connected communications band；
Square dielectric-slab, above the omnidirectional radiation unit of circular media plate, square dielectric-slab center and circular media
Plate center is on same vertical center line, and the area of square dielectric-slab is less than the area of circular media plate, rectangular Jie
Scutum is equipped with directional radiation unit, is responsible for 3.30-3.60GHz, the directed radiation of 4.80-5.00GHz frequency range inner width covering surface；
The square dielectric-slab connect support by 4 half steel wires with circular media plate；
Feed structure, four feed points are arranged in square dielectric-slab there are five feed port in setting on circular media plate, wherein
The feed port of circular media plate the center point is directly connected to SMA feeds, motivates omnidirectional radiation unit；And on circular media plate with
The center of circle is the four additional feed port of symmetrical centre upwards via four feed points on vertical half steel wire and square dielectric-slab
It connects one by one, SMA feeds of connection downwards motivate directional radiation unit；
Eight groups of inverted L-shaped units, every group of inverted L-shaped unit respectively include small one and large one inverted L-shaped unit；Small inverted L-shaped unit position
In big inverted L-shaped unit inside, arrangement is uniformly distributed with the central angle at 45 ° of the center of circle interval of circular media plate, the circle surrounded
Array, the inverted L-shaped unit material are latten(-tin)；
Further, there are four feeding points, four feeding points to be located at square dielectric-slab for the upper surface of the square dielectric-slab
On diagonal line, four feeding points connect diagonal feeding point by covering copper cross.
Further, the lower surface of the square dielectric-slab is equipped with two pairs of orthogonal annular arm dipoles, as orientation spoke
The radiator of unit is penetrated, the feeding point of square dielectric-slab upper surface is connect with the inner core of half steel wire upper end, the annular arm of lower surface
Dipole is connect with the outer conductor of half steel wire upper end, realizes feed.
Further, each annular arm of the dipole is also provided with semicircular patch by paracentral position.
Further, the upper surface of the circular media plate is equipped with circular patch, and the radiation as omnidirectional radiation unit is pasted
Piece, the circular patch are equipped with omnidirectional's vertical polarization port, four feeding points and eight metallization VIAs, both pass through round Jie
Scutum extends to lower surface.
Further, omnidirectional's vertical polarization port is located at the circular media plate center of circle, four feed ports and half
The connection of steel wire lower end outer conductor, eight metallization VIAs are uniformly divided with the central angle at 45 ° of the center of circle interval of circular media plate
Cloth arrangement.
Further, the circular patch is also connected with 8 native fonts and covers copper, small one and large one described inverted L-shaped unit is stood respectively
In covering on copper, small inverted L-shaped unit is located inside, and big inverted L-shaped unit is located at outside.
Further, the single metal via hole is located at the center of circle shape that two adjacent native fonts cover copper Yu circular media plate
At on the angular bisector of angle.
Further, the dielectric-slab is dielectric constant 3.5, and the F4B dielectric-slab of thickness 1mm applies copper and etches.
Further, half steel wire is then using inner core diameter 0.29mm, insulating layer diameter 0.94mm, outer diameter 1.19mm
Semi-rigid coaxial cable.
The present invention has the advantage that
The antenna is provided simultaneously with three polarization, low-cross polarization, high port isolation, Directed radiation modes broad beam, omnidirectional
The low out-of-roundness of radiation mode, and in azimuthal plane realize higher gain characteristic, meet 5G-V2X requirement.
[Detailed description of the invention]
Fig. 1 is inventive antenna stereoscopic schematic diagram.
Fig. 2 is the dielectric-slab front and back sides of inventive antenna directional radiation unit.
Fig. 3 is the dielectric-slab front and back sides of inventive antenna omnidirectional radiation unit.
Fig. 4 is that inventive antenna conceals inverted L-shaped cell schematics.
Fig. 5 is inventive antenna inverted L unit partial enlarged view.
Fig. 6 is inventive antenna size marking figure.
Fig. 7 is the standing-wave ratio of emulation and the measurement of inventive antenna and the data of gain.
Fig. 8 isolation measurement and emulation data between inventive antenna different port.
Fig. 9 is two pairs of ports of the invention respectively in the simulated radiation directional diagram of 3.5GHz and 4.9GHz.
Figure 10 is the antenna pattern that omnidirectional's vertical polarization of the present invention port emulates and measured under 5.9GHz frequency.
Wherein 1 is circular media plate, and 11 be circular patch, and 12 be omnidirectional's vertical polarization port, and 13 be circular media plate the
One feed port, 14 be the second feed port of circular media plate, and 15 be circular media plate third feed port, and 16 be circular media
The 4th feed port of plate, 17 cover copper for native font, and 2 be square dielectric-slab, and 21 cover copper for cross, and 22 present for square dielectric-slab first
Electric, 23 be the second feeding point of square dielectric-slab, and 24 be square dielectric-slab third feeding point, and 25 feed for square dielectric-slab the 4th
Point, 26 be annular arm dipole, and 3 be metallization VIA, and 4 be big inverted L-shaped unit, and 5 be small inverted L-shaped unit, and 6 be half steel wire.
[specific embodiment]
In order to which the technological means for realizing the present invention is clear, the present invention is further explained with reference to the accompanying drawing.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
In the description of the present invention, it should be noted that if occur term " center ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
Either the invention product using when the orientation or positional relationship usually put, be merely for convenience of the description present invention and simplification retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
In addition, being only used for distinguishing description if there is term " first ", " second ", " third " etc., and should not be understood as indicating
Or imply relative importance.
In addition, being not offered as requiring component abswolute level or outstanding if there are the terms such as term "horizontal", "vertical", " pendency "
It hangs down, but can be slightly tilted.It is not to indicate to be somebody's turn to do if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
Structure is had to fully horizontally, but can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, if there is term
" setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachably connect
It connects, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
Embodiment
The three polarization car antennas applied to 5G-V2X car networking communication system as shown in Figure 1, including circular media plate
1, square dielectric-slab 2, feed structure, eight groups of inverted L-shaped units；
As shown in figure 3, circular media plate 1, is set to 2 lower section of square dielectric-slab, is equipped among the circular media plate 1 complete
To radiating element, it is responsible for the direct-connected communications band of 5.85-5.925GHz；The upper surface of the circular media plate is equipped with circular patch
11, as the radiation patch of omnidirectional radiation unit, the circular patch 11 is equipped with the feed end of omnidirectional's vertical polarization port 12, four
Mouth and eight metallization VIAs, both pass through circular media plate 1 and extend to lower surface.
Omnidirectional's vertical polarization port 12 is located at 1 center of circle of circular media plate, and square dielectric-slab 2 passes through among circular media plate 1
Half steel wire 6 realize support, four feeding points of square dielectric-slab 2 connect with half steel wire, 6 upper end, four of circular media plate 1
Feed port is connect with half steel wire, 6 lower end, and eight metallization VIAs are with the central angle at 45 ° of the center of circle interval of circular media plate
It is uniformly distributed arrangement.Half steel wire 6 itself is intermediate to be equipped with inner core, and the upper surface cross of connection square dielectric-slab 2 applies copper 21, half steel
The outer conductor upper end of line 6 connects orthogonal annular arm dipole 26, and lower end connects 1 upper surface circular patch 11 of circular media plate,
The semi-rigid coaxial cable of half steel wire, 6 inner core diameter 0.29mm, insulating layer diameter 0.94mm, outer diameter 1.19mm.
Four feed ports of circular media plate 1 are as follows: the first feed port of circular media plate 13, circular media plate second are presented
Electric port 14, circular media plate third feed port 15, the 4th feed port 16 of circular media plate.
As shown in figure 3 or 4, circular patch is also connected with eight native fonts and covers 17 strip conductor of copper, and strip conductor facilitates welding,
Two units of different sizes stand on cover on copper respectively by the deposited copper strip conductor connection of circle dielectric-slab upper surface, small inverted L
Shape unit 5 is located inside, and big inverted L-shaped unit 4 is located at outside.The inverted L-shaped unit for surrounding two circles both expands directional radiation unit
Half-power beam width, and increase the gain in the horizontal plane of omnidirectional radiation unit.
The single metal via hole 3 is located at the center of circle formation angle that two adjacent native fonts cover copper 17 and circular media plate
Angular bisector on, while 11 upper surface of circular patch is shorted to ground by eight metallization VIAs.
SMA head, SMA inner cores and the circular patch 11 of circular media plate upper surface are reserved in circular media plate lower surface
Center forms omnidirectional's vertical polarization port 12, this 11 surface of circular patch is also the ground of directional radiation unit,
As shown in Fig. 2, square dielectric-slab 2, above the omnidirectional radiation unit of circular media plate 1, in square dielectric-slab 2
The heart and 1 center of circular media plate are on same vertical center line, and the area of square dielectric-slab 2 is less than circular media plate 1
Area, the square dielectric-slab 2 are equipped with directional radiation unit, are responsible for 3.30-3.60GHz, 4.80-5.00GHz frequency range inner width
The directed radiation of covering surface；The square dielectric-slab 2 connect support by four and half steel wires 6 with circular media plate 1；
There are four feeding points for the upper surface of square dielectric-slab 2, are respectively as follows: the first feeding point of square dielectric-slab 22, rectangular Jie
The second feeding point of scutum 23, square dielectric-slab third feeding point 24, the 4th feeding point 25 of square dielectric-slab, four feeding points are located at
On square dielectric-slab diagonal line, four feeding points connect diagonal feeding point by covering copper cross.Deposited copper cross is connected to diagonal
Feed point can guide electric current, when work, should give diagonal port: the first feed port of circular media plate 13, circular media plate
The signal of this pair of of feed-in constant amplitude reverse phase of three feed ports 15 can pass through balun reality during actual measurement and use
It is existing, and presented in an identical manner to the second feed port of circular media plate 14, the 4th feed port 16 of circular media plate this pair
It is electric then generate another polarization.Two pairs of ports generate ± 45 ° of linear polarizations respectively.
The lower surface of square dielectric-slab 2 is equipped with two pairs of annular arm dipoles 26, is formed and is intersected, is electrically connected with half steel wire outer conductor
It connects, the radiator as directional radiation unit.The annular arm of each pair of dipole 26 is also provided with half by paracentral position
Circular patch, it is therefore an objective to allow directed element feed port from a distance, be that feed SMA of omnidirectional radiation unit are pre-
Stay position.
As shown in figure 5, every group of inverted L-shaped unit respectively includes small one and large one inverted L-shaped unit；By the Huang with a thickness of 0.3mm
Copper sheet welds to be formed, and small inverted L-shaped unit 5 is located at big 4 inside of inverted L-shaped unit, with 45 ° of the center of circle interval of circular media plate 1
Central angle be uniformly distributed arrangement, surround two layers of circular array；And the upper end horizontal plane length of small inverted L-shaped unit 5 is longer than greatly
Inverted L-shaped unit 4 length.
Circular media plate 1 and square dielectric-slab 2 are dielectric constant 3.5, the F4B dielectric-slab of thickness 1mm apply copper etching and
At.
As shown in fig. 6, being the dimensional parameters of the present embodiment antenna, unit mm is specific as follows:
| Rg | Rp | Rf | Rv | Rb | r1 | r2 | r3 |
| 38 | 17 | 7.6 | 8.8 | 1.8 | 1.4 | 7.2 | 4.1 |
| W1 | W2 | W3 | W4 | W5 | W6 | W7 | t1 |
| 30 | 1.9 | 2.3 | 0.6 | 0.8 | 1 | 0.6 | 4.9 |
| L1 | L2 | L3 | L4 | L5 | L6 | d1 | d2 |
| 10.7 | 9.9 | 4.5 | 11.2 | 7 | 8.6 | 0.78 | 1.19 |
| H1 | H2 | H3 | h | G1 | G2 | G3 | |
| 16 | 9 | 10 | 1 | 0.7 | 4.8 | 1.44 |
For two pairs of feeding points of square dielectric-slab 2 by differential feed, it is orthogonal that two pairs of feed points of square dielectric-slab 2 generate direction
Horizontal linear polarization, in addition circular media plate 1 omnidirectional's vertical polarization port 12 excitation generate vertical linear polarization formed three poles
Change antenna, can be used as car antenna use.Fig. 7 illustrates the standing-wave ratio of emulation and the measurement of antenna and the data of gain.Fig. 8 is
Isolation measurement and emulation data between different port.Fig. 9 is two pairs of ports respectively in the simulated radiation of 3.5GHz and 4.9GHz
Directional diagram.Figure 10 is the antenna pattern that omnidirectional's vertical polarization port emulates and measured under 5.9GHz frequency.
Present invention firstly provides for the different communication object of two kinds of interfaces of car networking C-V2X technology, design have orientation,
The antenna of the different radiation modes of two kinds of omnidirectional.For Uu interface, antenna direction radiation, car antenna be distributed in 5G remotely
The transmitting-receiving of information is carried out between base station；For PC5 interface, antenna omnidirectional radiation, vehicle can with the vehicle of surrounding and roadside equipment into
Row direct communication.
Inventive antenna is mainly made of directional radiation unit and omnidirectional radiation unit.Directional radiation unit is to intersect annular
Based on arm dipole, two frequency ranges of 3.3-3.6GHz and 4.8-5.0GHz are covered.Omnidirectional radiation unit is to justify patch monopole
Antenna is shorted based on the structure on ground, covers 5.85-5.925GHz frequency range.Directional radiation unit is with omnidirectional radiation unit dielectric-slab
The radiation patch on upper layer is ground, based on the principle of introducing 8 font directional diagram of current elements superposition, enables the patch and 8 groups of inverted L-shaped units
The circular array of composition connects, and enables and intersects half beam width of the annular arm dipole above or below Sub-6GHz in two frequency bands from original
65 ° or so come are increased to about 100 °.In addition the radiation patch of omnidirectional radiation unit connects via the thin conductor of bar shaped and inverted L-shaped unit
The structure connect, so that monopole cone of radiation main beam and the angle of azimuthal plane are reduced to 0 °, at azimuth by about 60 °
In plane, gain is by originally less than 0dBi promotion to 3.0dBi or so.Intersect annular arm doublet unit and uses differential feed
Scheme, simultaneously because greatly improving itself cross polarization, isolation performance, but also omnidirectional radiation using differential feed
The out-of-roundness of unit maintains a relatively low level.
All technical solutions for belonging to the principle of the invention all belong to the scope of protection of the present invention.For those skilled in the art
For member, several improvement carried out without departing from the principles of the present invention, these improvement also should be regarded as guarantor of the invention
Protect range.
Claims (10)
- The car antenna 1. a kind of three applied to 5G-V2X car networking communication system polarize, which is characterized in that including circular media Plate, square dielectric-slab, feed structure, eight groups of inverted L-shaped units；Circular media plate is set to below square dielectric-slab, and the circular media plate is equipped with omnidirectional radiation unit, is responsible for 5.85- 5.925GHz direct-connected communications band；Square dielectric-slab, above the omnidirectional radiation unit of circular media plate, in square dielectric-slab center and circular media plate The heart is on same vertical center line, and the area of square dielectric-slab is less than the area of circular media plate, the square dielectric-slab It is equipped with directional radiation unit, is responsible for 3.30-3.60GHz, the directed radiation of 4.80-5.00GHz frequency range inner width covering surface；It is described Square dielectric-slab connect support by 4 half steel wires with circular media plate；Feed structure, four feed points are arranged in square dielectric-slab, wherein round there are five feed port in setting on circular media plate The feed port of dielectric-slab the center point is directly connected to SMA feeds, motivates omnidirectional radiation unit；And with the center of circle on circular media plate For symmetrical centre four additional feed port upwards via four feed points on vertical half steel wire and square dielectric-slab one by one Connection, SMA feeds of connection downwards, motivates directional radiation unit；Eight groups of inverted L-shaped units, every group of inverted L-shaped unit respectively include small one and large one inverted L-shaped unit；Small inverted L-shaped unit is located at big Inverted L-shaped unit inside, arrangement is uniformly distributed with the central angle at 45 ° of the center of circle interval of circular media plate, the circular array surrounded, The inverted L-shaped unit material is latten(-tin).
- 2. car antenna according to claim 1, which is characterized in that there are four feeds for the upper surface of the square dielectric-slab Point, four feeding points are located on square dielectric-slab diagonal line, and four feeding points connect diagonal feeding point by covering copper cross.
- 3. car antenna according to claim 1, which is characterized in that the lower surface of the square dielectric-slab is being equipped with two pairs just The annular arm dipole of friendship, as the radiator of directional radiation unit, on the feeding point of square dielectric-slab upper surface and half steel wire The inner core at end connects, and the annular arm dipole of lower surface is connect with the outer conductor of half steel wire upper end, realizes feed.
- 4. car antenna according to claim 1, which is characterized in that each annular arm of the dipole is by paracentral Position is also provided with semicircular patch.
- 5. car antenna according to claim 1, which is characterized in that the upper surface of the circular media plate is equipped with round patch Piece, as the radiation patch of omnidirectional radiation unit, the circular patch be equipped with omnidirectional's vertical polarization port, four feed ports with And eight metallization VIAs, it both passes through circular media plate and extends to lower surface.
- 6. car antenna according to claim 5, which is characterized in that omnidirectional's vertical polarization port is located at circular media The plate center of circle, four feed ports are connect with half steel wire lower end outer conductor, and eight metallization VIAs are with circular media plate The central angle at 45 ° of center of circle interval be uniformly distributed arrangement.
- 7. car antenna according to claim 5, which is characterized in that the circular patch is also connected with 8 native fonts and covers copper, Small one and large one described inverted L-shaped unit is stood on respectively to be covered on copper, and small inverted L-shaped unit is located inside, and big inverted L-shaped unit is located at outer Side.
- 8. car antenna according to claim 6, which is characterized in that the single metal via hole is located at two adjacent soil Font covers copper and the center of circle of circular media plate is formed on the angular bisector of angle.
- 9. car antenna according to claim 1, which is characterized in that dielectric-slab is dielectric constant 3.5, thickness 1mm's F4B dielectric-slab applies copper and etches.
- 10. car antenna according to claim 1, which is characterized in that half steel wire is then using inner core diameter The semi-rigid coaxial cable of 0.29mm, insulating layer diameter 0.94mm, outer diameter 1.19mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910825754.3A CN110492239B (en) | 2019-09-03 | 2019-09-03 | Three-polarization vehicle-mounted antenna applied to 5G-V2X vehicle networking communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910825754.3A CN110492239B (en) | 2019-09-03 | 2019-09-03 | Three-polarization vehicle-mounted antenna applied to 5G-V2X vehicle networking communication system |
Publications (2)
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| CN113013585A (en) * | 2021-02-20 | 2021-06-22 | 上海海积信息科技股份有限公司 | Antenna and vehicle-mounted equipment |
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