CN109473779A - A kind of vehicle-mounted LTE antenna - Google Patents
A kind of vehicle-mounted LTE antenna Download PDFInfo
- Publication number
- CN109473779A CN109473779A CN201811507842.0A CN201811507842A CN109473779A CN 109473779 A CN109473779 A CN 109473779A CN 201811507842 A CN201811507842 A CN 201811507842A CN 109473779 A CN109473779 A CN 109473779A
- Authority
- CN
- China
- Prior art keywords
- radiator
- vehicle
- radiation branch
- pcb substrate
- antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
-
- 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
- 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
Abstract
The invention discloses a kind of vehicle-mounted LTE antennas, belong to field of antenna, vehicle-mounted LTE antenna includes PCB substrate, is connected to the first radiator of grounding point and is connected to the second radiator of feeding point, first radiator, which is connected to be grounded with second radiator, to be printed on the first face of the PCB substrate, and the working frequency range of first radiator is lower than the working frequency range of second radiator.Vehicle-mounted LTE antenna provided in an embodiment of the present invention not only small volume, and it is able to achieve the effect of radiation multiband, while also can effectively broaden the bandwidth of two high frequencies of antenna, effectively improve antenna receptivity.
Description
Technical field
The present invention relates to field of antenna, in particular to a kind of vehicle-mounted LTE antenna.
Background technique
Currently, vehicle-carrying communication antenna generallys use whip antenna to design, whip antenna is a kind of flexible vertical rod
Shape antenna, this antenna oscillator is all long, and length is generally 1/4 or 1/2 wavelength, is mounted on car body surface loftyly, both
Beauty is influenced, and is easily damaged.
With the deep development of the 4GLTE communication technology, entire communication system requires increasingly the frequency spectrum and bandwidth of antenna
Height, and common whip antenna significant discomfort closes the requirement of multiband aerial.The follow-on whiplike day used currently on the market
Although multiband effect may be implemented in line, but there is a problem of that volume is larger, antenna receptivity is also undesirable.
Summary of the invention
Present invention seek to address that the above problem, provides a kind of vehicle-mounted LTE antenna, adopted with solving LTE antenna in the prior art
The volume existing for whip antenna form is larger, antenna receptivity also undesirable technical problem.The purpose of the present invention is logical
Cross following technical scheme realization:
On the one hand, provide a kind of vehicle-mounted LTE antenna, including PCB substrate, be connected to grounding point the first radiator and
It is connected to the second radiator of feeding point, first radiator, which is connected to be grounded with second radiator, is printed on the PCB
On first face of substrate, the working frequency range of first radiator is lower than the working frequency range of second radiator.
Further, the PCB substrate have left lateral and the right portion, be connected to the left lateral and the right portion it
Between upper edge and lower edge, the feeding point and the grounding point are arranged in the lower edge；
First radiator surrounds the edge distribution of the lower edge, the right portion and the upper edge, and described the
Edge direction of two radiators from the edge of the left lateral towards the right portion extends to be connected to first radiator.
Further, first radiator includes sequentially connected first radiation branch, the second radiation branch and third
Radiation branch, first radiation branch, second radiation branch and the third radiation branch respectively correspond and are distributed in institute
On the edge for stating lower edge, the right portion and the upper edge；
The width of first radiation branch is greater than the width of the second radiation branch, and the width of first radiation branch
Less than the width of the third radiation branch.
Further, second radiator includes radiating principal and extension interconnected, the extension connection
To first radiator；
Wherein, the radiating principal is the polygon for being cut three rectangular angulars thereon by a rectangular-shaped metallic object and being formed
Shape, the area of the rectangular-shaped metallic object are greater than the half of the area of the PCB substrate.
Further, three rectangular angulars be located at the top left region of the rectangular-shaped metallic object, lower left region and
Lower right area.
Further, PCB substrate structure in a rectangular trapezoid.
It further, further include the parasitic body being printed on the second face of the PCB substrate, second face and described the
Opposite on one side, the parasitic body is electrically connected at the grounding point.
Further, the parasitic body is in rectangle and the fringe region for being disposed longitudinally on second face.
It further, further include antenna house, antenna base, the active circuit plate being fixedly arranged in the antenna base, it is described
PCB substrate is vertically fixed on the active circuit plate, and the signal input part of the feeding point and the active circuit plate is electrical
The ground terminal of connection, the grounding point and the active circuit plate is electrically connected.
Further, the antenna house has shark fin structure.
Vehicle-mounted LTE antenna provided in an embodiment of the present invention is grounded print by the way that the first radiator and the second radiator are connected
Brush is on the first face of PCB substrate, i.e., by the way of single side radiation, and by the way that the first radiator is connected to ground connection respectively
Point, the second radiator are connected to feeding point, and thus not only antenna volume is smaller, and due to the first radiator and the second radiator
Two frequency ranges of 900MHz and 1800MHz are generated in a manner of the load of gap, can be realized the effect of radiation multiband, while also can
The effectively bandwidth of broadening two high frequencies of antenna, effectively improves antenna receptivity.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the front view of vehicle-mounted LTE antenna provided in an embodiment of the present invention；
Fig. 2 is the rearview of vehicle-mounted LTE antenna provided in an embodiment of the present invention；
Fig. 3 is the cross-sectional view of vehicle-mounted LTE antenna provided in an embodiment of the present invention；
Fig. 4 is return loss (Return Loss) of the vehicle-mounted LTE antenna provided in an embodiment of the present invention in LTE frequency range
Test chart.
Specific embodiment
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance or the quantity for implicitly indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be bright
Show or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple " contain
Justice is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Vehicle-mounted LTE antenna provided in an embodiment of the present invention can be used as car antenna for receiving mobile communication signal.
It is shown in Figure 1, vehicle-mounted LTE antenna include PCB substrate 10, the first radiator 30 for being connected to grounding point 20 and
It is connected to the second radiator 50 of feeding point 40, the first radiator 30, which is connected to be grounded with the second radiator 50, is printed on PCB substrate
On 10 the first face, the working frequency range of the first radiator 30 is lower than the working frequency range of the second radiator 50.
Specifically, PCB substrate 10 has the opposite face TOP and the face Bottom, and the face TOP is the first face, and the face Bottom is the
Two faces, grounding point 20, the first radiator 30, feeding point 40 and the second radiator 50 are set on the face TOP of PCB substrate 10,
In, grounding point 20 and feeding point 40 are separately positioned on the bottom both ends in the face TOP, and the working frequency range of the first radiator 30 is
698MHz-960MHz, the working frequency range of the second radiator 50 are 1427.9MHz-2690MHz.
Vehicle-mounted LTE antenna provided in an embodiment of the present invention is grounded print by the way that the first radiator and the second radiator are connected
Brush is on the first face of PCB substrate, i.e., by the way of single side radiation, and by the way that the first radiator is connected to ground connection respectively
Point, the second radiator are connected to feeding point, and thus not only antenna volume is smaller, and due to the first radiator and the second radiator
Two frequency ranges of 900MHz and 1800MHz are generated in a manner of the load of gap, can be realized the effect of radiation multiband, while also can
The effectively bandwidth of broadening two high frequencies of antenna, effectively improves antenna receptivity.
With continued reference to shown in Fig. 1, PCB substrate 10 has left lateral and the right portion, is connected between left lateral and the right portion
Upper edge and lower edge, wherein feeding point 40 and grounding point 20 are arranged in lower edge；First radiator 30 is around following
The edge distribution in portion, the right portion and upper edge, edge direction of second radiator 50 from the edge of left lateral towards the right portion are prolonged
It stretches to be connected to the first radiator 30.
With continued reference to shown in Fig. 1, the first radiator 30 includes sequentially connected first radiation branch 31, the second radiation branch
32 and third radiation branch 33, the first radiation branch 31, the second radiation branch 32 and third radiation branch 33 respectively correspond distribution
On the edge of lower edge, the right portion and upper edge；Wherein, the width of the first radiation branch 31 is greater than the second radiation branch 32
Width, and the width of the first radiation branch 31 is less than the width of third radiation branch 33.
In the specific implementation, the width value range of the first radiation branch 31 can be 1.4mm to 1.6mm, the second radiation
The width value range of branch 32 can be 0.3mm to 0.5mm, and the width value range of third radiation branch 33 can be
3.8mm to 4.0mm.
With continued reference to shown in Fig. 1, the second radiator 50 includes radiating principal 51 interconnected and extension 52, extension
52 are connected to the first radiator 30；Wherein, radiating principal 51 be three rectangular angulars thereon are cut by a rectangular-shaped metallic object and
The multilateral shape of formation, the area of rectangular-shaped metallic object are greater than the half of the area of PCB substrate 10；Extension 52 is a rectangle knot
Structure.
Preferably, the material of rectangular-shaped metallic object is copper foil, by using printing day of the copper foil material in PCB substrate
Line, so that vehicle-mounted LTE antenna cost of manufacture is lower and has preferable conductive characteristic.
In the specific implementation, the width value range of rectangular-shaped metallic object is 22.8mm to 23.0mm, rectangular-shaped metallic object
Length value range be 38.2mm to 38.4.0mm.The transverse width of extension 52 is 3.4mm to 3.6mm.
With continued reference to shown in Fig. 1, three rectangular angulars are located at top left region, lower left region and the right side of rectangular-shaped metallic object
Lower region.For ease of description, three rectangular angulars are respectively the upper left corner, the lower left corner, the lower right corner, wherein the lower left corner is from rectangular-shaped
The rectangular angular that cutout goes out in the lower left region of metallic object, and cutout falls the remainder behind the lower left corner and is connected to feedback in lower left region
Electric point.In addition, the area in the upper left corner is maximum in three rectangular angulars, the area in the lower right corner is minimum.
With continued reference to shown in Fig. 1, the structure in a rectangular trapezoid of PCB substrate 10.Specifically, the left lateral of PCB substrate 10, the right side
Edge, lower edge, upper rim portion are not used as top, bottom, height and the bevel edge of ladder structure of right angle.It in the specific implementation, can be by PCB
Substrate is dimensioned to: ratio between left lateral and following minister's degree and the right portion close to 4:3:6, material FR-4,
Relative dielectric constant ε r is 4.3, with a thickness of 1.6mm.Ladder structure of right angle is designed to from there through by PCB substrate, it can be more preferable
Ground is adapted with the top shape of shark fin type antenna cover, limited inside shark fin type antenna cover so as to more effectively utilize
Space.
Shown in Figure 2, vehicle-mounted LTE antenna further includes the parasitic body 60 being printed on the second face of PCB substrate 10, and second
Face is opposite with the first face, and parasitic body 60 is electrically connected at grounding point 20.
Wherein, parasitic body 60 is in rectangle and the fringe region for being disposed longitudinally on the second face.In the specific implementation, parasitic body 60
Transverse width value be 3.4mm to 3.6mm, longitudinal length value range be 8.1mm to 8.5mm.
Shown in Figure 3, vehicle-mounted LTE antenna further includes antenna house 70, antenna base 80, is fixedly arranged in antenna base 80
Active circuit plate 90, PCB substrate 10 are vertically fixed on active circuit plate 90, and feeding point 40 and the signal of active circuit plate 90 are defeated
Enter end to be electrically connected, the ground terminal of grounding point 20 and active circuit plate 90 is electrically connected.Wherein, antenna house 70 has shark fins knot
Structure.
Wherein, active circuit plate 90 is fixed in parallel on antenna base 80, wherein active circuit plate 90 is equipped with amplification
Circuit, the bottom margin of PCB substrate 10 is equipped with to be connect for being welded in the left welding ends, middle welding ends, backhand welding of active circuit plate 90
End, wherein feeding point 40 is located on left welding ends, and left welding ends is electrically connected to the signal input part of active circuit plate 90, the
One end of first radiation branch of one radiator 30 is arranged on middle welding ends, and the other end is connected with grounding point 20 is grounded setting
On right welding ends, the radio signal transmission that the signal input part of active circuit plate 90 receives vehicle-mounted LTE antenna is extremely amplified
Circuit carries out signal amplification, then passes through cable transmission to vehicle main frame.
Wherein, washer is additionally provided between antenna house 70 and antenna base 80, the material of washer is the thermoplastic that hardness is 65 ± 5
Property elastomer styrene plastic, with a thickness of 3.5mm, being suitable for top cover metal plate range of curvature radius is 5200mm-
11500mm。
Wherein, antenna base 80, which is equipped with, confines device 81.It is strutted by fixing screws by device is confined, so that antenna bottom
Seat can contact well with the roof metal plate of automobile, mounting torque 6NmAD18.
In addition, other antennas can also be installed in above-mentioned shark fin type antenna cover, such as AM/FM antenna, satellite navigation day
Line etc., such as shown in Fig. 3, the right side of vehicle-mounted LTE antenna is arranged in AM/FM antenna, satellite navigation aerial is arranged at vehicle-mounted LTE days
The left side of line, and with the required distance of any between various antennas, to ensure that the degree of coupling meets technical requirements.By that will have
The antenna of different function is integrated in shark fin type antenna cover, realizes a day line multi-function, miniaturization and beautyization.
Illustrate antenna performance of the vehicle-mounted LTE antenna provided by the invention in LTE frequency range in conjunction with Fig. 4.It is horizontal in Fig. 4
Coordinate is frequency (MHz), and ordinate is return loss (dB), in 698MHz-960MHz frequency range and 1427.9MHz-2690MHz
The return loss of frequency range internal antenna, which is substantially all, is less than -10dB.As seen from Figure 4, vehicle-mounted LTE antenna energy provided by the invention
It is enough that there is wider bandwidth in LTE frequency range, and there is preferable matching.
To sum up show vehicle-mounted LTE antenna provided in an embodiment of the present invention, antenna volume is smaller, can in a limited space,
It realizes the effect of radiation multiband, while can also effectively broaden the bandwidth of two high frequencies of antenna, effectively improve antenna acceptance
Energy.
All the above alternatives can form alternative embodiment of the invention using any combination, herein no longer
It repeats one by one.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of vehicle-mounted LTE antenna, which is characterized in that including PCB substrate, be connected to the first radiator and the connection of grounding point
In the second radiator of feeding point, first radiator, which is connected to be grounded with second radiator, is printed on the PCB substrate
The first face on, the working frequency range of first radiator is lower than the working frequency range of second radiator.
2. vehicle-mounted LTE antenna according to claim 1, which is characterized in that the PCB substrate has left lateral and the right
Portion, the upper edge and lower edge being connected between the left lateral and the right portion, the feeding point and the grounding point are set
It sets in the lower edge；
First radiator surrounds the edge distribution of the lower edge, the right portion and the upper edge, second spoke
Edge direction of the beam from the edge of the left lateral towards the right portion extends to be connected to first radiator.
3. vehicle-mounted LTE antenna according to claim 2, which is characterized in that first radiator includes sequentially connected
First radiation branch, the second radiation branch and third radiation branch, first radiation branch, second radiation branch and institute
It states third radiation branch and respectively corresponds and be distributed on the edge of the lower edge, the right portion and the upper edge；
The width of first radiation branch is greater than the width of the second radiation branch, and the width of first radiation branch is less than
The width of the third radiation branch.
4. vehicle-mounted LTE antenna according to claim 2, which is characterized in that second radiator includes interconnected
Radiating principal and extension, the extension are connected to first radiator；
Wherein, the radiating principal is the multilateral shape for being cut three rectangular angulars thereon by a rectangular-shaped metallic object and being formed,
The area of the rectangular-shaped metallic object is greater than the half of the area of the PCB substrate.
5. vehicle-mounted LTE antenna according to claim 4, which is characterized in that three rectangular angulars are located at the square
Top left region, lower left region and the lower right area of shaped metal body.
6. vehicle-mounted LTE antenna according to any one of claims 1 to 5, which is characterized in that the PCB substrate is at right angles terraced
Shape structure.
7. vehicle-mounted LTE antenna according to claim 6, which is characterized in that further include be printed on the PCB substrate second
Parasitic body on face, second face is opposite with first face, and the parasitic body is electrically connected at the grounding point.
8. vehicle-mounted LTE antenna according to claim 7, which is characterized in that the parasitic body is in rectangle and is disposed longitudinally on
The fringe region in second face.
9. vehicle-mounted LTE antenna according to claim 6, which is characterized in that further include antenna house, antenna base, be fixedly arranged on
Active circuit plate in the antenna base, the PCB substrate are vertically fixed on the active circuit plate, the feeding point with
The signal input part of the active circuit plate is electrically connected, and the ground terminal of the grounding point and the active circuit plate electrically connects
It connects.
10. vehicle-mounted LTE antenna according to claim 9, which is characterized in that the antenna house has shark fin structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507842.0A CN109473779A (en) | 2018-12-11 | 2018-12-11 | A kind of vehicle-mounted LTE antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507842.0A CN109473779A (en) | 2018-12-11 | 2018-12-11 | A kind of vehicle-mounted LTE antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109473779A true CN109473779A (en) | 2019-03-15 |
Family
ID=65675962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811507842.0A Pending CN109473779A (en) | 2018-12-11 | 2018-12-11 | A kind of vehicle-mounted LTE antenna |
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| Country | Link |
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| CN (1) | CN109473779A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113506978A (en) * | 2021-06-17 | 2021-10-15 | 福耀玻璃工业集团股份有限公司 | On-vehicle V2X antenna, glass unit and vehicle |
| WO2022127408A1 (en) * | 2020-12-15 | 2022-06-23 | Shanghai Amphenol Airwave Communication Electronics Co., Ltd | Highly-integrated vehicle antenna configuration |
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| CN113506978A (en) * | 2021-06-17 | 2021-10-15 | 福耀玻璃工业集团股份有限公司 | On-vehicle V2X antenna, glass unit and vehicle |
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