CN209045759U - A kind of vehicle-mounted 4G LTE MIMO of circle and GPS three-in-one antenna - Google Patents
A kind of vehicle-mounted 4G LTE MIMO of circle and GPS three-in-one antenna Download PDFInfo
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- CN209045759U CN209045759U CN201820800062.4U CN201820800062U CN209045759U CN 209045759 U CN209045759 U CN 209045759U CN 201820800062 U CN201820800062 U CN 201820800062U CN 209045759 U CN209045759 U CN 209045759U
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Abstract
The utility model discloses a kind of vehicle-mounted 4G LTE MIMO of circle and GPS three-in-one antenna, including antenna casing, PCB main board, the first PCB vertical plate, the 2nd PCB vertical plate, the first PCB level board, the 2nd PCB level board, GPS antenna ceramic dielectric, GPS low-noise amplifier and 50 ohm coaxial lines and radio frequency connector composition；The utility model brings following effect: antenna overall dimensions are smaller, circular profile；Primary antenna and slave antenna good electrical property are high with wide, between the two isolation.In its working band, voltage standing wave ratio is less than 2.5.In low frequency 824-960MHz frequency band, isolation is greater than 30dB；In high frequency 1710-2690MHz frequency band, isolation is greater than 17dB.
Description
Technical field
The utility model relates to a kind of three-in-one vehicle-mounted antenna, specifically a kind of vehicle-mounted 4G LTE MIMO of circle with
GPS three-in-one antenna.
Background technique
Forth generation (4G LTE) mobile communication is flourishing, rapid proliferation.The core technology of forth generation mobile communication
It is multiple-input, multiple-output (MIMO) and orthogonal frequency division multiple access (OFDM).MIMO be transmitting terminal and receiving end using mutiple antennas simultaneously into
The technology of row communication, can be improved the message capacity, data transmission bauds and anti-multipath fading ability of communication system in this way.
Car antenna generally comprises 4G LTE mimo antenna and GPS positioning antenna, for the ease of car wiring installation, needs
Mutiple antennas is combined, on the one hand requires overall dimensions to be suitable for installation, on the other hand, due to interior of body metal structure
More, the input impedance of conventional dipole sub-antenna is easy to be affected, and GPS antenna itself needs to guarantee with other transmitting antennas higher
Isolation is to improve the stability of positioning.
Utility model content
The purpose of this utility model be propose it is a kind of by adjusting structure, layout of antenna etc. design, taking into account outside antenna
Just as when, make full use of inner space, guarantee good radiation efficiency and isolation while there is the round vehicle of anti-metal ability
Carry 4G LTE MIMO and GPS three-in-one antenna.
The utility model adopts the following technical solution:
A kind of vehicle-mounted 4G LTE MIMO of circle and GPS three-in-one antenna, including antenna casing, PCB (polytetrafluoroethylene (PTFE) print
Printed circuit board) mainboard, the first PCB vertical plate, the 2nd PCB vertical plate, the first PCB level board, the 2nd PCB level board, GPS antenna pottery
Ceramic dielectric, GPS low-noise amplifier and 50 ohm coaxial lines and radio frequency connector composition；
The external dimensions of the antenna casing is 82 millimeters of diameter, 14.5 millimeters of x high, and material is the non-gold of PC/ABS or other
Belong to material.
One end of three 50 ohm coaxial lines connects radio frequency connector, such as FAKRA, SMA and TNC, the other end
It is welded on PCB main board, the inner conductor of coaxial line welds together with the corresponding microstrip feed line on PCB main board, and outer conductor is compiled
The ground of tissue layer and antenna welds together.Wherein 4G primary antenna feeder line is connect with 4G primary antenna microstrip feed line, 4G slave antenna feeder line
It is connect with 4G slave antenna microstrip feed line, GPS antenna feeder line is connect with GPS antenna microstrip feed line.
It include 4G primary antenna, 4G slave antenna and GPS antenna inside the antenna casing；
The 4G primary antenna is made of PCB main board, the first PCB vertical plate and the first PCB level board, and 4G slave antenna is by
Two PCB vertical plates, the 2nd PCB level board and PCB main board are constituted, and PCB main board is shared by 4G primary antenna and 4G slave antenna；
The first PCB vertical plate and the 2nd PCB vertical plate are all vertical with PCB main board, the first PCB level board and second
PCB level board is all parallel with PCB main board；
The GPS antenna includes GPS ceramic medium antenna and low-noise amplifier；
The PCB main board is 1mm thickness dual platen, and front is three 50 ohm of microstrip line, the back side for antenna, just
Face primary antenna part has one section of impedance transformation line to adjust impedance to 50ohm；
The 4G primary antenna frequency range is 824-960MHz/1710-2690MHz, generally plane inverted l antenna, is
Realization multiband increases gap and parasitic oscillator, meanwhile, in order to improve the matching status of antenna, used distributed inductance and
Distribution capacity, while in order to inhibit coaxial shielding layer electric current, by mainboard increase as far as possible；
The 4G slave antenna frequency range is 1710-2690MHz, is PIFA antenna, in order to improve it between primary antenna
Isolation, in angle of 45 degrees, antenna carries out matching optimization by distribution capacity and parasitic minor matters for primary antenna and slave antenna shape
Antenna performance.
The GPS antenna is active antenna, i.e. antenna includes GPS ceramic medium antenna and low-noise amplifier.Due to GPS
Signal level is lower, needs amplifier amplifies signals, while also compensating decaying caused by feeder line, improves to interior electromagnetic interference
Anti-interference ability.
As optional embodiment, the function of 4G slave antenna is relatively simple, and there are many modes of can be achieved, including L-type list
It is extremely sub, remove parasitic element etc., can all satisfy the use demand.
As optional embodiment, the parasitic oscillator of primary antenna is used for extended high frequency bandwidth, also can be below PCB plate
Realize function.
As optional embodiment, FR4 plate is only used as carrier, is not restricted to this, other similar plates
Or metal chip antenna can all realize identical function.
The utility model brings following effect:
1. antenna overall dimensions are smaller, circular profile；
2. primary antenna and slave antenna good electrical property, high with wide, between the two isolation.In its working band, electricity
Press standing-wave ratio less than 2.5.In low frequency 824-960MHz frequency band, isolation is greater than 30dB；In high frequency 1710-2690MHz frequency band
Interior, isolation is greater than 17dB.
Detailed description of the invention:
Attached drawing 1 is the overall appearance schematic diagram of the utility model；
Attached drawing 2 is the inner antenna structural schematic diagram removed after antenna casing；
Attached drawing 3 is the first PCB vertical plate main view；
Attached drawing 4 is the 2nd PCB vertical plate main view；
Attached drawing 5 is PCB main board back side main view；
Attached drawing 6 is embodiment of the L-type monopole as 4G slave antenna；
Attached drawing 7 is that the parasitic oscillator of primary antenna is placed on the embodiment below the first PCB plate；
For Fig. 1 into Fig. 5,1 is antenna casing, and 2 be 50 ohm coaxial lines, and 3 be radio frequency connector, and 11 be GPS antenna, 12
It is PCB main board, 13 be 4G primary antenna, and 14 be the first PCB vertical plate, and 15 be the first PCB plate, and 16 be the 2nd PCB vertical plate, and 17 be 4G
Slave antenna, 18 be the 2nd PCB plate, and 21 be GPS antenna feeder line, and 22 be 4G primary antenna feeder line, and 23 be 4G slave antenna feeder line, 141
It is parasitic oscillator, 142 be feed section, and 143 be short circuit grounding, and 161 be parasitic element, and 162 be feed section, and 163 be end
Load, 10 be antenna；
Specific embodiment:
The utility model is described further with reference to the accompanying drawings and detailed description:
Fig. 1 into Fig. 5,
The external dimensions of antenna casing 1 is 82 millimeters of diameter, 14.5 millimeters of x high, and material is PC/ABS or other non-metallic materials
Matter.
It include 4G primary antenna, 4G slave antenna and GPS antenna inside antenna casing；
One end of three 50 ohm coaxial lines 2 connects radio frequency connector 3, such as FAKRA, SMA and TNC, other end weldering
It connects on PCB main board 12, the inner conductor of coaxial line welds together with the corresponding microstrip feed line on PCB main board 12, outer conductor
The ground of braiding layer and antenna welds together.Wherein 4G primary antenna feeder line 22 is connect with 4G primary antenna microstrip feed line, 4G slave antenna
Feeder line 23 is connect with 4G slave antenna microstrip feed line, and 21 feeder line of GPS antenna is connect with GPS antenna microstrip feed line.
4G primary antenna is made of PCB main board 12, the first PCB vertical plate 14 and the first PCB level board 15, and 4G slave antenna is
It is made of the 2nd PCB vertical plate 16, the 2nd PCB level board 18 with PCB main board 12, PCB main board 12 is 4G primary antenna and 4G slave antenna
It shares；
First PCB vertical plate 14 and the 2nd PCB vertical plate 16 are all vertical with PCB main board 12, the first PCB level board 15 and
Two PCB level boards 18 are all parallel with PCB main board 12；
PCB main board 12 is 1mm thickness dual platen, and front is three 50 ohm of microstrip line, the back side for antenna 10；
4G primary antenna frequency range is 824-960MHz/1710-2690MHz, generally planar inverted L antennas, for reality
Existing multiband increases gap and parasitic oscillator, meanwhile, in order to improve the matching status of antenna, use distributed inductance and distribution
Capacitor, while in order to inhibit coaxial shielding layer electric current, by mainboard increase as far as possible；
The 4G slave antenna frequency range is 1710-2690MHz, is PIFA antenna, in order to improve it between primary antenna
Isolation, in angle of 45 degrees, antenna carries out matching optimization by distribution capacity and parasitic minor matters for primary antenna and slave antenna shape
Antenna performance.
As optional embodiment, the function of 4G slave antenna is relatively simple, and there are many modes of can be achieved, including L-type list
It is extremely sub, remove parasitic element etc., can all satisfy the use demand, attached drawing 6 gives the embodiment of L-type monopole.
As optional embodiment, the parasitic oscillator of primary antenna is used for extended high frequency bandwidth, also can be below PCB plate
Realize function, the embodiment that the parasitic oscillator 141 that attached drawing 7 gives primary antenna is placed on 15 lower section of the first PCB level board.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. a kind of vehicle-mounted 4G LTE MIMO of circle and GPS three-in-one antenna, it is characterized in that including antenna casing, PCB main board, the
One PCB vertical plate, the 2nd PCB vertical plate, the first PCB level board, the 2nd PCB level board, GPS antenna ceramic dielectric, GPS low noise are put
Big device and 50 ohm coaxial lines and radio frequency connector；
The external dimensions of the antenna casing is 82 millimeters of diameter, 14.5 millimeters of x high, material PC/ABS；
One end of three 50 ohm coaxial lines connects radio frequency connector, and the other end is welded on PCB main board, coaxial line it is interior
Conductor welds together with the corresponding microstrip feed line on PCB main board, and the ground of outer conductor braiding layer and antenna welds together,
Middle 4G primary antenna feeder line is connect with 4G primary antenna microstrip feed line, and 4G slave antenna feeder line is connect with 4G slave antenna microstrip feed line, and GPS days
Line feeder line is connect with GPS antenna microstrip feed line；
It include 4G primary antenna, 4G slave antenna and GPS antenna inside the antenna casing；
The 4G primary antenna is made of PCB main board, the first PCB vertical plate and the first PCB level board, and 4G slave antenna is by second
PCB vertical plate, the 2nd PCB level board and PCB main board are constituted, and PCB main board is shared by 4G primary antenna and 4G slave antenna；
The first PCB vertical plate and the 2nd PCB vertical plate are all vertical with PCB main board, the first PCB level board and the 2nd PCB water
Plate is all parallel with PCB main board；
The GPS antenna includes GPS ceramic medium antenna and low-noise amplifier；
The PCB main board is 1mm thickness dual platen, and front is three 50 ohm of microstrip line, and for antenna, front is main at the back side
Antenna part has one section of impedance transformation line to adjust impedance to 50ohm；
The 4G primary antenna frequency range is 824-960MHz and 1710-2690MHz, generally planar inverted L antennas, for reality
Existing multiband increases gap and parasitic oscillator, meanwhile, in order to improve the matching status of antenna, use distributed inductance and distribution
Capacitor, while in order to inhibit coaxial shielding layer electric current, by mainboard increase；
The 4G slave antenna frequency range is 1710-2690MHz, be PIFA antenna, in order to improve its between primary antenna every
From degree, in angle of 45 degrees, antenna carries out matching optimization antenna by distribution capacity and parasitic minor matters for primary antenna and slave antenna shape
Performance；
The GPS antenna is active antenna, i.e. antenna includes GPS ceramic medium antenna and low-noise amplifier.
2. the vehicle-mounted 4G LTE MIMO of a kind of circle according to claim 1 and GPS three-in-one antenna, it is characterized in that 4G pair
Antenna uses L-type monopole.
3. the vehicle-mounted 4G LTE MIMO of a kind of circle according to claim 1 and GPS three-in-one antenna, it is characterized in that 4G pair
Antenna removes parasitic element.
4. the vehicle-mounted 4G LTE MIMO of a kind of circle according to claim 1 and GPS three-in-one antenna, it is characterized in that main day
The parasitic oscillator of line is used for extended high frequency bandwidth, and function is realized below pcb board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820800062.4U CN209045759U (en) | 2018-05-21 | 2018-05-21 | A kind of vehicle-mounted 4G LTE MIMO of circle and GPS three-in-one antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820800062.4U CN209045759U (en) | 2018-05-21 | 2018-05-21 | A kind of vehicle-mounted 4G LTE MIMO of circle and GPS three-in-one antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209045759U true CN209045759U (en) | 2019-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820800062.4U Active CN209045759U (en) | 2018-05-21 | 2018-05-21 | A kind of vehicle-mounted 4G LTE MIMO of circle and GPS three-in-one antenna |
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| CN (1) | CN209045759U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247199A (en) * | 2019-07-10 | 2019-09-17 | 常州柯特瓦电子有限公司 | Antenna assembly |
| CN110534877A (en) * | 2019-08-22 | 2019-12-03 | 上海海积信息科技股份有限公司 | A kind of NR antenna and vehicle-mounted antenna system |
| CN110581361A (en) * | 2019-10-15 | 2019-12-17 | 上海增信电子有限公司 | miniaturized multifrequency multiaerial device |
| CN113075464A (en) * | 2021-03-30 | 2021-07-06 | 一汽奔腾轿车有限公司 | Vehicle-mounted three-in-one antenna electromagnetic compatibility test system and control method thereof |
-
2018
- 2018-05-21 CN CN201820800062.4U patent/CN209045759U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247199A (en) * | 2019-07-10 | 2019-09-17 | 常州柯特瓦电子有限公司 | Antenna assembly |
| CN110534877A (en) * | 2019-08-22 | 2019-12-03 | 上海海积信息科技股份有限公司 | A kind of NR antenna and vehicle-mounted antenna system |
| CN110581361A (en) * | 2019-10-15 | 2019-12-17 | 上海增信电子有限公司 | miniaturized multifrequency multiaerial device |
| CN113075464A (en) * | 2021-03-30 | 2021-07-06 | 一汽奔腾轿车有限公司 | Vehicle-mounted three-in-one antenna electromagnetic compatibility test system and control method thereof |
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Address after: 213000 No.91, Hanjiang West Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Changzhou ketewa Electronics Co.,Ltd. Address before: 213000 No.91, Hanjiang West Road, Xinbei District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU CTW ELECTRONICS Co.,Ltd. |