CN205508998U - Full frequency channel vehicle antenna - Google Patents
Full frequency channel vehicle antenna Download PDFInfo
- Publication number
- CN205508998U CN205508998U CN201620291667.6U CN201620291667U CN205508998U CN 205508998 U CN205508998 U CN 205508998U CN 201620291667 U CN201620291667 U CN 201620291667U CN 205508998 U CN205508998 U CN 205508998U
- Authority
- CN
- China
- Prior art keywords
- antenna
- pcb board
- main
- frequency band
- slave
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a full frequency channel vehicle antenna, including the antenna boom, be equipped with the antenna bottom plate on the antenna boom, be equipped with antenna radiator on the antenna bottom plate, antenna radiator includes slave antenna, master antenna, isolator and antenna PCB board, antenna PCB board sets up on the antenna bottom plate, and slave antenna and master antenna setting are on the antenna bottom plate, and the isolator setting is on the antenna bottom plate, antenna PCB board is connected with first coaxial line, second coaxial line, be equipped with the antenna house on the antenna boom, the antenna house covers antenna PCB board. The utility model discloses realize the wide band characteristic of antenna, improve the isolation between master antenna and the slave antenna.
Description
Technical field
This utility model relates to a kind of antenna, particularly to a kind of full frequency band car antenna.
Background technology
The most in the world, mobile communication is quick to forth generation (4G) from the third generation (3G)
Transition.4G communication development in the ascendant, be readily applied to numerous communications field, as car networking,
Internet of Things etc..Wherein car networking is one of field of fast development the most, and a function admirable can apply to
Whole world every country and regional 4G car antenna industry desirable product just.
Similar car antenna, mainly has following problem: antenna size is the biggest.On cars on hand
Under the background that electronic equipment is increasing, the locus that antenna is installed increasingly is restricted, it is therefore necessary to
Reduce the size of antenna as far as possible.Frequency band is too narrow.Frequency band can only comprise section communication frequency band, such as domestic main sky
Line frequency range is usually 824-960MHz/1710-2690MHz, and slave antenna only comprises high band, i.e.
1710-2690MHz, and external, and the FDD LTE such as the U.S. mainly uses low frequency part.Some design
Use switch switching between different frequency bands to realize broadband, this on the one hand add the cost of antenna with
The complexity of communication system, also is difficult to realize in some cases.Isolation between main antenna and slave antenna
Relatively low.Owing between major-minor antenna, isolation is low, cause major-minor Antenna Correlation higher, and 4G communicates it
So data transfer rate is fast, one of wherein crucial technology utilizes several independent transmission channel to carry out exactly
The transmission of data, if the dependency between passage is high, will affect data uplink and the downlink transfer of system
Speed.And some design is in order to improve isolation, the efficiency of stint no sacrifice antenna.Result causes whole system
Sensitivity decrease, similarly in the area that network signal is more weak, data transmission bauds reduce.
Utility model content
For not enough present on prior art, this utility model provides a kind of broadband properties realizing antenna,
The full frequency band car antenna of the isolation between raising main antenna and slave antenna.
To achieve these goals, this utility model is to realize by the following technical solutions:
A kind of full frequency band car antenna, including antenna holder, antenna holder is provided with Antenna baseplate, at the bottom of antenna
Plate is provided with antenna radiator, and antenna radiator includes slave antenna, main antenna, isolator and antenna PCB
Plate；Antenna pcb board is arranged on Antenna baseplate, and slave antenna and main antenna are arranged on Antenna baseplate, every
It is arranged on Antenna baseplate from device；Antenna pcb board connects the first coaxial line, the second coaxial line；Antenna
Support is provided with antenna house, and antenna house covers antenna pcb board；Main antenna includes the primary radiation connected two-by-two
Pcb board, main ground connection pcb board and main power feed pcb board；Primary radiation pcb board, main ground connection pcb board
And main power feed pcb board is arranged on antenna pcb board；Slave antenna includes the collateral radiation PCB connected two-by-two
Plate, secondary ground connection pcb board and secondary feed pcb board；Collateral radiation pcb board, secondary ground connection pcb board and
Secondary feed pcb board is arranged on antenna pcb board；Antenna pcb board is provided with the first coplanar waveguide transmission line
With the second coplanar waveguide transmission line；One end of first coaxial line is free end, the other end of the first coaxial line with
One end of first coplanar waveguide transmission line connects, the other end of the first coplanar waveguide transmission line and main power feed PCB
Plate connects, and main power feed pcb board is connected with primary radiation pcb board；One end of second coaxial line is free end,
The other end of the second coaxial line and one end of the second coplanar waveguide transmission line connect, the second coplanar waveguide transmission line
The other end is connected with secondary feed pcb board, the secondary pcb board that feeds is connected with collateral radiation pcb board.
Further, described isolator is double frequency isolator.
Further, described isolator is arranged on the middle part of antenna pcb board.
Further, described isolator and antenna pcb board are that 45 ° of angles are arranged.
Further, described slave antenna and main antenna lay respectively on the diagonal angle of antenna pcb board；So may be used
To maximize space length therebetween, improve isolation.
Further, described antenna pcb board be provided with the first gap, the second gap, the 3rd gap and
4th gap.
The full frequency band car antenna of technique scheme, slave antenna is used to use planar inverted-F antenna with main antenna
The mode adding parasitic oscillator realizes；Planar inverted-F antenna is typical low section omnidirectional antenna；General employing
On aerial radiation face, the mode of fluting changes antenna impedance operator at its second harmonic, comes real with this
The dual frequency characteristics of existing antenna.In order to improve the isolation between main antenna and slave antenna, major-minor aerial radiation
Device is individually positioned on the diagonal angle of antenna pcb board；Main antenna and slave antenna are individually positioned in antenna PCB
On the diagonal angle of plate, the distance between such antenna is maximum；Use isolator, reduce the space coupling between major-minor antenna
Close；The isolator used is double frequency；Its role is to change the antenna pattern of antenna, thus increase sky
Isolation between line；On the feed of antenna, make major-minor antenna phase margin.Present with slave antenna to main antenna
The coplanar waveguide transmission line of electricity is half-wavelength at the length difference of low-frequency range, i.e. 180 degree phase contrasts.
Accompanying drawing explanation
This utility model is described in detail below in conjunction with the accompanying drawings with detailed description of the invention；
Fig. 1 is the structural representation of this utility model full frequency band car antenna.
Fig. 2 is the structural representation of antenna radiator described in the utility model.
Fig. 3 is the voltage standing wave ratio figure of main antenna described in the utility model.
Fig. 4 is the voltage standing wave ratio figure of slave antenna described in the utility model.
Fig. 5 is isolation figure between main antenna described in the utility model and slave antenna.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and effect and be readily apparent from
Solve, below in conjunction with detailed description of the invention, this utility model is expanded on further.
As shown in Figures 1 to 5, a kind of full frequency band car antenna, including antenna holder 4, antenna holder 4
Being provided with Antenna baseplate 3, Antenna baseplate 3 is provided with antenna radiator 2, and antenna radiator 2 includes secondary sky
Line 8, main antenna 9, isolator 18 and antenna pcb board 7；Antenna pcb board 7 is arranged at the bottom of antenna
On plate 3, slave antenna 8 and main antenna 9 are arranged on Antenna baseplate 3, and isolator 18 is arranged at the bottom of antenna
On plate 3；Antenna pcb board 7 connects first coaxial line the 5, second coaxial line 6；Set on antenna holder 4
Antenna house 1, antenna house 1 is had to cover antenna pcb board 7；Main antenna 9 includes the primary radiation PCB connected two-by-two
Plate 10, main ground connection pcb board 11 and main power feed pcb board 12；Primary radiation pcb board 10, main ground connection
Pcb board 11 and main power feed pcb board 12 are arranged on antenna pcb board 7；Slave antenna 8 includes two-by-two
The collateral radiation pcb board 15 connected, secondary ground connection pcb board 16 and secondary feed pcb board 17；Collateral radiation
Pcb board 15, secondary ground connection pcb board 16 and secondary feed pcb board 17 are arranged on antenna pcb board 7；
Antenna pcb board 7 is provided with the first coplanar waveguide transmission line 13 and the second coplanar waveguide transmission line 14；First
One end of coaxial line 5 is free end, the other end of the first coaxial line 5 and the first coplanar waveguide transmission line 13
One end connect, the other end of the first coplanar waveguide transmission line 13 is connected with main power feed pcb board 12, lead
Feed pcb board 12 is connected with primary radiation pcb board 10；One end of second coaxial line 6 is free end, the
The other end of two coaxial lines 6 and one end of the second coplanar waveguide transmission line 14 connect, and the second co-planar waveguide passes
The other end of defeated line 14 is connected with secondary feed pcb board 17, secondary feed pcb board 17 and collateral radiation PCB
Plate 15 connects；Isolator 18 is double frequency isolator；Isolator 18 is arranged on the middle part of antenna pcb board 7；
Isolator 18 and antenna pcb board 7 are arranged in 45 ° of angles；Slave antenna 8 and main antenna 9 lay respectively at sky
On the diagonal angle of line pcb board 7；So can maximize space length therebetween, improve isolation；
Antenna pcb board 7 is provided with the first the 19, second gap the 20, the 3rd, gap gap 21 and the 4th gap
22。
This utility model full frequency band car antenna, slave antenna 8 uses planar inverted-F antenna to add with main antenna 9 and posts
The mode of raw oscillator realizes；Planar inverted-F antenna is typical low section omnidirectional antenna；Typically use in sky
On beta radiation face, the mode of fluting changes antenna impedance operator at its second harmonic, realizes sky with this
The dual frequency characteristics of line.But for 4G antenna, this bandwidth is inadequate；Use increase by
The mode of the parasitic oscillator of individual 1/4 wavelength produces an additional resonance at high frequency treatment；It addition, by a large amount of
Electromagnetic Simulation calculate, not only the feed position properly selecting antenna antenna radiator can be presented
Electricity, it is also possible to having encouraged reference in the radiation of low frequency simultaneously, and with reference to ground except the radiation at low frequency,
Its secondary resonance just falls at antenna high frequency treatment.The most whole antenna has two resonance at low frequency, and one is sky
The resonance of line itself, another is that antenna ground is produced, and then has three resonance, antenna radiator at high frequency treatment
Second harmonic, parasitic oscillator and the second harmonic on antenna ground；So bandwidth of antenna can be completely covered whole
4G communication band, i.e. 698-960MHz/1710-2690MHz.For further widening frequency band, use scarce
Fall in ground；The i.e. reference ad-hoc location on the ground at antenna increases the gap of given shape and size, changes with this
The frequency characteristic of the impedance of antenna reaches to widen the purpose of antenna frequency band；In order to improve main antenna and slave antenna
Between isolation, have employed three methods: 1, spatial separation, major-minor antenna radiator placed respectively
On the diagonal angle of antenna pcb board；Main antenna and slave antenna are individually positioned on the diagonal angle of antenna pcb board,
So distance between antenna is maximum.2, use isolator, reduce the Space Coupling between major-minor antenna.Use
Isolator be double frequency；Its role is to change antenna antenna pattern, thus increase between antenna every
From degree.3, on the feed of antenna, major-minor antenna phase is made to differ from 180 degree.Present with slave antenna to main antenna
The coplanar waveguide transmission line of electricity is half-wavelength at the length difference of low-frequency range, i.e. 180 degree phase contrasts.Use the party
Formula is to make radio-frequency current on pcb board cancel each other in intersection, thus improves isolation.
Of the present utility model ultimate principle and principal character and of the present utility model excellent have more than been shown and described
Point.Skilled person will appreciate that of the industry, this utility model is not restricted to the described embodiments, above-mentioned reality
Execute and principle of the present utility model is simply described, without departing from this utility model spirit described in example and description
On the premise of scope, this utility model also has various changes and modifications, and these changes and improvements both fall within
In the range of claimed this utility model.This utility model claims scope by appending claims
And equivalent defines.
Claims (6)
1. a full frequency band car antenna, including antenna holder, it is characterised in that: antenna holder is provided with sky
Line base plate, Antenna baseplate is provided with antenna radiator, and antenna radiator includes slave antenna, main antenna, isolation
Device and antenna pcb board；Antenna pcb board is arranged on Antenna baseplate, and slave antenna is arranged on main antenna
On Antenna baseplate, isolator is arranged on Antenna baseplate；Antenna pcb board connect have the first coaxial line, the
Two coaxial lines；Antenna holder is provided with antenna house, and antenna house covers antenna pcb board；Main antenna includes two
Two primary radiation pcb board, main ground connection pcb board and the main power feed pcb boards connected；Primary radiation pcb board,
Main ground connection pcb board and main power feed pcb board are arranged on antenna pcb board；Slave antenna includes connecting two-by-two
Collateral radiation pcb board, secondary ground connection pcb board and secondary feed pcb board；Collateral radiation pcb board, pair connect
Ground pcb board and secondary feed pcb board are arranged on antenna pcb board；Antenna pcb board is provided with first
Coplanar waveguide transmission line and the second coplanar waveguide transmission line；One end of first coaxial line is free end, and first is same
One end of the other end of axis and the first coplanar waveguide transmission line connects, another of the first coplanar waveguide transmission line
End is connected with main power feed pcb board, and main power feed pcb board is connected with primary radiation pcb board；Second coaxial line
One end is free end, and the other end of the second coaxial line and one end of the second coplanar waveguide transmission line connect, second
The other end of coplanar waveguide transmission line is connected with secondary feed pcb board, secondary feed pcb board and collateral radiation PCB
Plate connects.
Full frequency band car antenna the most according to claim 1, it is characterised in that: isolator be double frequency every
From device.
Full frequency band car antenna the most according to claim 1, it is characterised in that: isolator is arranged on sky
The middle part of line pcb board.
Full frequency band car antenna the most according to claim 3, it is characterised in that: isolator and antenna
Pcb board is that 45 ° of angles are arranged.
Full frequency band car antenna the most according to claim 1, it is characterised in that: slave antenna and main antenna
Lay respectively on the diagonal angle of antenna pcb board.
Full frequency band car antenna the most according to claim 1, it is characterised in that: on antenna pcb board
It is provided with the first gap, the second gap, the 3rd gap and the 4th gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620291667.6U CN205508998U (en) | 2016-04-08 | 2016-04-08 | Full frequency channel vehicle antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620291667.6U CN205508998U (en) | 2016-04-08 | 2016-04-08 | Full frequency channel vehicle antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205508998U true CN205508998U (en) | 2016-08-24 |
Family
ID=56736175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620291667.6U Withdrawn - After Issue CN205508998U (en) | 2016-04-08 | 2016-04-08 | Full frequency channel vehicle antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205508998U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896084A (en) * | 2016-04-08 | 2016-08-24 | 常州柯特瓦电子有限公司 | Full-band vehicle-mounted antenna |
| CN113782970A (en) * | 2021-09-13 | 2021-12-10 | 立讯精密工业（昆山）有限公司 | Vehicle-mounted antenna assembly and vehicle-mounted antenna device |
-
2016
- 2016-04-08 CN CN201620291667.6U patent/CN205508998U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896084A (en) * | 2016-04-08 | 2016-08-24 | 常州柯特瓦电子有限公司 | Full-band vehicle-mounted antenna |
| CN105896084B (en) * | 2016-04-08 | 2019-03-05 | 常州柯特瓦电子有限公司 | A kind of full frequency band car antenna |
| CN113782970A (en) * | 2021-09-13 | 2021-12-10 | 立讯精密工业（昆山）有限公司 | Vehicle-mounted antenna assembly and vehicle-mounted antenna device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160824 Effective date of abandoning: 20190305 |
|
| AV01 | Patent right actively abandoned |