CN104882669A - DSRC and LTE integrated shark fins type vehicle antenna - Google Patents

DSRC and LTE integrated shark fins type vehicle antenna Download PDF

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Publication number
CN104882669A
CN104882669A CN201510218517.2A CN201510218517A CN104882669A CN 104882669 A CN104882669 A CN 104882669A CN 201510218517 A CN201510218517 A CN 201510218517A CN 104882669 A CN104882669 A CN 104882669A
Authority
CN
China
Prior art keywords
antenna
dsrc
lte
housing
grounded
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
Application number
CN201510218517.2A
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Chinese (zh)
Inventor
周伟希
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Amphenol Airwave Communication Electronics Co Ltd
Original Assignee
Shanghai Amphenol Airwave Communication Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Amphenol Airwave Communication Electronics Co Ltd filed Critical Shanghai Amphenol Airwave Communication Electronics Co Ltd
Priority to CN201510218517.2A priority Critical patent/CN104882669A/en
Publication of CN104882669A publication Critical patent/CN104882669A/en
Pending legal-status Critical Current

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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
    • H01Q1/27—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
    • H01Q1/36—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
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • 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

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  • Details Of Aerials (AREA)

Abstract

The invention provides a DSRC and LTE integrated shark fins type vehicle antenna, which is arranged on the roof of a vehicle through an antenna housing. The DSRC and LTE integrated shark fins type vehicle antenna comprises: a circuit board, which is arranged between the antenna housing and the roof of the vehicle, is connected with the roof of the vehicle to be connected with the ground, and is also connected to a feed source; an LTE antenna, which is arranged at one side of the housing, wherein the upper end of the LTE antenna is positioned on the top of one side of the antenna housing, and the lower end of the LTE antenna is positioned at the bottom of the antenna housing and is connected with the circuit board to achieve grounding and feed; and a DSRC antenna, which is arranged on the other side, facing the side where the LTE antenna is located, of the antenna housing, positioned on the top of the other side of the antenna housing, and connected to the circuit board through a transmission line to realize grounding and feed. Mutual interference between the DSRC antenna and the LTE antenna is minimized, the isolation degree between the DSRC antenna and the LTE antenna is improved, the horizontal gain and circularity of radiation patterns is improved, and interference of the roof of the vehicle in the DSRC antenna is minimized.

Description

The shark fin type car antenna of a kind of integrated DSRC and LTE
Technical field
The present invention relates to antenna design techniques field, particularly the shark fin type car antenna of a kind of integrated DSRC and LTE.
Background technology
DSRC(Dedicated Short Range Communications) be a kind of wireless communication technology efficiently, it can be implemented in certain area the target identification of high-speed mobile and two-way communication.The research and development of DSRC equipment are important topics in intelligent transportation system research, be widely used in the fields such as non-parking charge, access and exit control, fleet management, information service, and vehicle identification, driver identify, possess advantageous advantage in the information interaction of road network and vehicle etc. in Region Segmentation function and zonule.
Because shark fins astronomical cycle is at roof, DSRC antenna is integrated on shark fins antenna and can obtains better circularity in the horizontal direction, avoid signal blind zone.But there is the problem existing between DSRC antenna and other antennas (such as LTE antenna etc.) and mutually disturb, also there is certain impact for the antenna circularity of DSRC antenna in roof curved surface simultaneously.
Summary of the invention
In order to solve the problem, the invention provides the shark fin type car antenna of a kind of integrated DSRC and LTE, being arranged on roof by an antenna housing, this shark fin type car antenna comprises:
Circuit board, is arranged on bottom described antenna housing, and described circuit board is connected with roof and is grounded, and described circuit board connects feed;
LTE antenna, is arranged on the side of described antenna housing, and the upper end of described LTE antenna is positioned at the top of described antenna housing side, and the lower end of described LTE antenna is positioned at the bottom of described antenna housing, and connects described circuit board and be grounded and feed;
DSRC antenna, be arranged on opposite side relative with described LTE antenna on antenna housing, described DSRC antenna is positioned at the top of antenna housing opposite side, and described DSRC antenna connects described circuit board by a transmission line is grounded and feed.
Preferably, described DSRC antenna right opposite is arranged without described LTE antenna, and described DSRC antenna and the described LTE antenna space projection horizontal direction in vertical surface is spaced apart.
Preferably, described LTE antenna adopts meandering line structure, and be grouped into by multiple lateral part and vertical portion, and the radiation areas of described DSRC antenna part are avoided in described lateral part, described vertical part is spaced apart in the horizontal direction with described DSRC antenna.
Preferably, described circuit board comprises LTE region and DSRC region, wherein,
Described LTE region comprises LTE grounded part and LTE feed part, and described LTE grounded part is connected with roof and is grounded, and described LTE antenna connects described LTE grounded part; Described LTE current feed department divides and comprises connected LTE antenna feeder line load point and LTE antenna feeder line outlet point, and described LTE antenna feeder line load point connects feed, and described LTE antenna connects LTE antenna feeder line load point.
Described DSRC region comprises DSRC grounded part and DSRC feed part, and described DSRC grounded part is connected with described LTE grounded part and is grounded, and described DSRC antenna connects described DSRC grounded part; Described DSRC current feed department divides and comprises connected DSRC feeder load point and DSRC feeder outlet point, and described DSRC feeder load point connects feed, and described DSRC antenna connects DSRC feeder load point.
Preferably, kept apart by a low value inductance between described LTE grounded part and described DSRC grounded part.
Preferably, kept apart by a low value capacitance between described DSRC feeder load point and DSRC feeder outlet point.
Preferably, described DSRC antenna is placed in the peak of described antenna housing.
Preferably, described antenna housing adopts shark fin type housing.
Preferably, described circuit board adopts pcb board.
Preferably, described DSRC antenna and LTE antenna are printed on described antenna housing on the surface by LDS technology.
The present invention, owing to adopting above technical scheme, makes it compared with prior art, has following advantage and good effect:
1, the shark fin type car antenna of a kind of integrated DSRC and LTE provided by the invention, by transmission line, DSRC antenna is arranged on the top of antenna housing, and make DSRC antenna parallel in roof peak, thus decrease the impact of roof curved surface on the radiation of DSRC antenna horizontal direction to greatest extent;
2, the shark fin type car antenna of a kind of integrated DSRC and LTE provided by the invention, LTE antenna adopts meandering line structure, make DSRC antenna right opposite is arranged without LTE antenna, and DSRC antenna and LTE antenna horizontal direction spaced apart, thus make DSRC antenna periphery there is no his electric current of crosscut, and make LTE antenna away from DSRC antenna, thus both ensure that the height of DSRC antenna, decrease again the impact of LTE antenna on DSRC aerial radiation to greatest extent;
3, the shark fin type car antenna of a kind of integrated DSRC and LTE provided by the invention, by low value inductance, LTE grounded part and DSRC grounded part are kept apart, when ensureing DC earthing, block the crosstalk of the high-frequency signal of LTE antenna, thus improve the isolation between LTE antenna and DSRC antenna; Meanwhile, kept apart by a low value capacitance between DSRC feeder load point and DSRC feeder outlet point, further improve the isolation between LTE antenna and DSRC antenna.
Accompanying drawing explanation
By reference to the accompanying drawings, by hereafter state detailed description, more clearly can understand above-mentioned and other feature and advantage of the present invention, wherein:
Fig. 1 is shark fin type car antenna overall structure schematic diagram of the present invention;
Fig. 2 is LTE antenna of the present invention, DSRC antenna and antenna housing structural representation;
Fig. 3 is LTE antenna of the present invention, DSRC antenna horizontal development schematic diagram;
Fig. 4 is the structural representation of circuit board of the present invention;
Fig. 5 is DSRC antenna horizontal direction perpendicular polarization gain curve figure when being close to roof;
Fig. 6 be DSRC antenna parallel with roof peak time horizontal direction perpendicular polarization gain curve figure;
Fig. 7 is S parameter of the present invention (scattering parameter) test result schematic diagram;
Fig. 8 is that DSRC antenna of the present invention is at 3D microwave dark room test result schematic diagram;
Fig. 9 is LTE main antenna horizontal direction perpendicular polarization gain curve figure of the present invention.
Symbol description:
1-shark fin type inner casing
2-pedestal
3-LTE antenna
The vertical part of 301-
302-lateral part
4-DSRC antenna
5-circuit board
501-PCB earth point
502-LTE region
5021-LTE grounded part
5022-LTE feeder load point
5023-LTE antenna feeder line outlet point
503-DSRC region
5031-DSRC grounded part
5032-DSRC feeder lambda line point
5033--DSRC feeder outlet point
5034-low value capacitance
504-low value inductance
6-transmission line.
Embodiment
See the accompanying drawing that the embodiment of the present invention is shown, hereafter in more detail the present invention will be described.But the present invention can realize in many different forms, and should not be construed as by the restriction in the embodiment of this proposition.On the contrary, it is abundant and complete open in order to reach for proposing these embodiments, and makes those skilled in the art understand scope of the present invention completely.In these accompanying drawings, for clarity sake, may be exaggerated size and the relative size in layer and region.
The invention provides the shark fin type car antenna of a kind of integrated DSRC and LTE, DSRC antenna and LTE antenna are integrated on an antenna, there is good circularity and gain.
This shark fin type car antenna comprises antenna housing, LTE antenna 3, DSRC antenna 4 and circuit board 5, antenna housing is arranged on roof, circuit board 5 is arranged on bottom antenna housing and between roof, LTE antenna 3, DSRC antenna 4 are separately positioned on the relative side of antenna housing two, and LTE antenna 3, DSRC antenna 4 connecting circuit board 5 are grounded and feed.
In the present embodiment; antenna housing comprises shark fin type inner casing 1 and shark fin type shell; the lower end of shark fin type inner casing 1 is installed on roof by a pedestal 2; LTE antenna 3, DSRC antenna 4 are arranged on the outer surface of shark fin type inner casing 1; shark fin type jacket on shark fin type inner casing, for the protection of antenna part.Wherein, preferred DSRC antenna 4 and LTE antenna 3 are by LDS(laser direct forming) technology is printed on shark fin type inner housing surface; Certainly; Also be set on antenna housing by other modes by DSRC antenna 4 and LTE antenna 3, the modes such as such as stickup, are not restricted herein.
LTE antenna 3 is arranged on the side of shark fin type inner casing 1, and setting up and down along this lateral edges place; The upper end of LTE antenna 3 is positioned at the top of shark fin type inner casing 1 side, and the lower end of LTE antenna 3 to be positioned at bottom shark fin type inner casing 1 and connecting circuit board 5.As shown in Figure 3, LTE antenna 3 adopts meandering line structure in the present embodiment, and LTE antenna 3 is made up of the vertical part 301 of multistage and lateral part 302, and the layout of lateral part 302 avoids the radiation areas of DSRC antenna 4; The antenna housing of i.e. DSRC antenna 4 right opposite arranges without the vertical part 301 of LTE antenna, lateral part 302, thus makes the periphery of DSRC antenna 4 not have its electric current of crosscut; DSRC antenna 4 and the vertical part 301 on right opposite antenna housing stagger spacing d in addition, and namely DSRC antenna 4 is with on the space projection of vertical part 301 in perpendicular, and horizontal range is between the two d; Preferably, the value of the increase d tried one's best, makes LTE days, and the vertical part 301 of 3 away from DSRC antenna 4, thus reduces the impact on DSRC antenna 4.The present invention reduces LTE antenna 3 to the impact on DSRC antenna 4 antenna pattern to greatest extent by above-mentioned design.Finally obtain test result as shown in Figure 8, DSRC antenna 4 keeps good circularity in the horizontal direction, and circularity is not less than 10dB; The average vertical polarized gain (LAG) of LTE antenna 3 horizontal direction is greater than-5dBi simultaneously.
DSRC antenna 4 is arranged on opposite side relative with the side being provided with LTE antenna 3 on shark fin type inner casing 1, and DSRC antenna 4 is positioned at the top of opposite side, and DSRC antenna 4 is by transmission line 6 connecting circuit board 5; Preferred DSRC antenna 4 is positioned at the position parallel with roof peak, with reference to Fig. 5-6, Fig. 5 gives horizontal direction perpendicular polarization gain curve figure when roof face is close to by DSRC antenna 4, Fig. 6 give DSRC antenna 4 parallel with roof peak time square to perpendicular polarization gain curve figure, by finding out gain about 3 dBs of the gain of Fig. 6 higher than Fig. 5 in Fig. 5-6; Therefore, DSRC antenna 4 is promoted to the top of antenna housing by the present invention by transmission line 6, makes DSRC antenna 4 parallel with roof peak, thus decreases the impact of roof curved surface on the radiation of DSRC antenna 4 horizontal direction to greatest extent.Wherein, transmission line 6 specifically can adopt coaxial line, microstrip line, co-planar waveguide etc., and DSRC antenna 4 can be symmetrical dipole, monopole etc., is not all restricted the form of transmission line 6, the specific constructive form of DSRC antenna 4 herein.
In the present embodiment, circuit board 5 specifically can adopt pcb board, and pcb board is arranged on the bottom of shark fin type inner casing 1, wherein pcb board is divided into LTE region 502 and DSRC region 503.
LTE grounded part 5021 and LTE feed part is comprised in LTE region 502, the PCB earth point 501 that LTE grounded part 5021 connecting PCB board end is arranged, PCB earth point 501 connects shark fins pedestal and finally connects roof and be grounded, and the lower end of LTE antenna 3 connects LTE grounded part 5021 and is grounded; LTE current feed department divides and comprises LTE antenna feeder line load point 5022 and LTE antenna feeder line outlet point 5023, feeder outlet point 5023 connects on-vehicle host by modes such as coaxial lines, thus LTE antenna feeder line outlet point 5023 is used as the feed of LTE antenna; LTE antenna feeder line load point 5022 connects LTE antenna feeder line outlet point 5023, and the lower end of LTE antenna 3 connects LTE antenna feeder line load point 5022 by modes such as bullet pins and realizes feed; Wherein, also match circuit can be provided with between LTE antenna feeder line load point 5022 and LTE antenna feeder line outlet point 50232.
DSRC region 503 includes DSRC grounded part 5031 and DSRC feed part, DSRC grounded part 5031 is connected with LTE grounded part 5021 and is grounded, and keeps apart by arranging a low value transducer 504 between DSRC grounded part 5031 and LTE grounded part 5021; The present invention by blocking the crosstalk of high-frequency signal when being arranged on and ensureing DSRC grounded part 5031 and LTE grounded part 5021 DC earthing of low value transducer 504, thus improves the isolation between DSRC antenna 4 and LTE antenna 3.DSRC current feed department divides and comprises DSRC feeder load point 5032 and DSRC feeder outlet point 5033, DSRC feeder outlet point 5033 connects on-vehicle host by modes such as coaxial lines, thus DSRC feeder outlet point 5033 is used as the feed of DSRC antenna; The lower end that DSRC feeder load point 5032 connects DSRC feeder outlet point 5033, DSRC antenna 4 connects DSRC feeder load point 5032 realize feed by playing the modes such as pin.
Being kept apart by a low value capacitance 5034 between line point 5033 appears in DSRC feeder load point 5032 and DSRC feeder; The present invention arranges by low value capacitance 5034 low frequency signal blocked on DSRC antenna 4, further improves the isolation between LTE antenna 3 and DSRC antenna 4.The lower end of DSRC antenna 4 connects DSRC grounded part 5031 and is grounded, and connects DSRC feeder load point 5032 and realizes connecting feed.
Due to, close together between DSRC antenna 4 and LTE antenna 3, when being left intact, isolation is less than-5dB usually, the present invention is held and the setting of low value inductance by low value point, substantially increase the isolation between DSRC antenna 4 and LTE antenna 3, obtain test result as shown in Figure 7, in whole frequency band, DSRC antenna 4 is greater than-17 with the isolation of LTE antenna 3.
In sum, the invention provides the shark fin type car antenna of a kind of integrated DSRC and LTE, be arranged on roof by an antenna housing, comprise: circuit board, be arranged between antenna housing and roof, and be connected ground connection with roof, circuit board also connects feed; LTE antenna, is arranged on housing side, and the upper end of LTE antenna is positioned at the top of antenna housing side, and the lower end of LTE antenna is positioned at the bottom of antenna housing and connecting circuit board is grounded and feed; DSRC antenna, be arranged on opposite side relative with being provided with LTE antenna side on antenna housing, DSRC antenna is positioned at the top of antenna housing opposite side, and DSRC antenna is grounded and feed by a transmission line connecting circuit board.Present invention reduces influencing each other of DSRC antenna and LTE antenna, improve the isolation of DSRC antenna and LTE antenna, the horizontal gain of antenna pattern and circularity, decrease the interference of roof to DSRC antenna.
Those skilled in the art should be understood that the present invention can realize with other concrete forms many and not depart from the spirit or scope of the present invention.Although describe embodiments of the invention, the present invention should be understood and should not be restricted to these embodiments, within the spirit and scope of the invention that those skilled in the art can define as appended claims, make change and amendment.

Claims (10)

1. a shark fin type car antenna of integrated DSRC and LTE, is characterized in that, is arranged on roof by an antenna housing, and this shark fin type car antenna comprises:
Circuit board, is arranged on bottom described antenna housing, and described circuit board is connected with roof and is grounded, and described circuit board connects feed;
LTE antenna, is arranged on the side of described antenna housing, and the upper end of described LTE antenna is positioned at the top of described antenna housing side, and the lower end of described LTE antenna is positioned at the bottom of described antenna housing, and connects described circuit board and be grounded and feed;
DSRC antenna, be arranged on opposite side relative with described LTE antenna on antenna housing, described DSRC antenna is positioned at the top of antenna housing opposite side, and described DSRC antenna connects described circuit board by a transmission line is grounded and feed.
2. according to the shark fin type car antenna of integrated DSRC and LTE according to claim 1, it is characterized in that, described DSRC antenna right opposite is arranged without described LTE antenna, and described DSRC antenna and the described LTE antenna space projection horizontal direction in perpendicular is spaced apart.
3. according to the shark fin type car antenna of integrated DSRC and LTE according to claim 2, it is characterized in that, described LTE antenna adopts meandering line structure, be grouped into by multiple lateral part and vertical portion, and the radiation areas of described DSRC antenna part are avoided in described lateral part, described vertical part is spaced apart in the horizontal direction with described DSRC antenna.
4. according to the shark fin type car antenna of integrated DSRC and LTE according to claim 1, it is characterized in that, described circuit board comprises LTE region and DSRC region, wherein,
Described LTE region comprises LTE grounded part and LTE feed part, and described LTE grounded part is connected with roof and is grounded, and described LTE antenna connects described LTE grounded part; Described LTE current feed department divides and comprises connected LTE antenna feeder line load point and LTE antenna feeder line outlet point, and described LTE antenna feeder line load point connects feed, and described LTE antenna connects LTE antenna feeder line load point;
Described DSRC region comprises DSRC grounded part and DSRC feed part, and described DSRC grounded part is connected with described LTE grounded part and is grounded, and described DSRC antenna connects described DSRC grounded part; Described DSRC current feed department divides and comprises connected DSRC feeder load point and DSRC feeder outlet point, and described DSRC feeder load point connects feed, and described DSRC antenna connects DSRC feeder load point.
5. according to the shark fin type car antenna of integrated DSRC and LTE according to claim 4, it is characterized in that, kept apart by a low value inductance between described LTE grounded part and described DSRC grounded part.
6. according to the shark fin type car antenna of integrated DSRC and LTE according to claim 4, it is characterized in that, kept apart by a low value capacitance between described DSRC feeder load point and DSRC feeder outlet point.
7. according to the shark fin type car antenna of integrated DSRC and LTE according to claim 1, it is characterized in that, described DSRC antenna is positioned at the peak of described antenna housing.
8. according to the shark fin type car antenna of integrated DSRC and LTE according to claim 1, it is characterized in that, described antenna housing adopts shark fin type housing.
9. according to the shark fin type car antenna of integrated DSRC and LTE according to claim 1, it is characterized in that, described circuit board adopts pcb board.
10. according to the shark fin type car antenna of integrated DSRC and LTE according to claim 1, it is characterized in that, described DSRC antenna and LTE antenna are printed on described antenna housing on the surface by LDS technology.
CN201510218517.2A 2015-04-29 2015-04-29 DSRC and LTE integrated shark fins type vehicle antenna Pending CN104882669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510218517.2A CN104882669A (en) 2015-04-29 2015-04-29 DSRC and LTE integrated shark fins type vehicle antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510218517.2A CN104882669A (en) 2015-04-29 2015-04-29 DSRC and LTE integrated shark fins type vehicle antenna

Publications (1)

Publication Number Publication Date
CN104882669A true CN104882669A (en) 2015-09-02

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107017455A (en) * 2015-09-29 2017-08-04 原田工业株式会社 Antenna assembly
CN108075232A (en) * 2016-11-17 2018-05-25 佳邦科技股份有限公司 The antenna structure of metal communication device
CN108973888A (en) * 2017-06-05 2018-12-11 锐锋股份有限公司 Car driving computer device
CN109473779A (en) * 2018-12-11 2019-03-15 汽-大众汽车有限公司 A kind of vehicle-mounted LTE antenna
CN110911803A (en) * 2019-12-02 2020-03-24 沈阳安费诺三浦汽车电子有限公司 Vehicle-mounted antenna

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107017455A (en) * 2015-09-29 2017-08-04 原田工业株式会社 Antenna assembly
CN108075232A (en) * 2016-11-17 2018-05-25 佳邦科技股份有限公司 The antenna structure of metal communication device
CN108973888A (en) * 2017-06-05 2018-12-11 锐锋股份有限公司 Car driving computer device
CN109473779A (en) * 2018-12-11 2019-03-15 汽-大众汽车有限公司 A kind of vehicle-mounted LTE antenna
CN109473779B (en) * 2018-12-11 2024-06-11 一汽-大众汽车有限公司 Vehicle-mounted LTE antenna
CN110911803A (en) * 2019-12-02 2020-03-24 沈阳安费诺三浦汽车电子有限公司 Vehicle-mounted antenna
CN110911803B (en) * 2019-12-02 2021-01-01 沈阳安费诺三浦汽车电子有限公司 Vehicle-mounted antenna

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