CN211404747U

CN211404747U - Vehicle-mounted integrated antenna

Info

Publication number: CN211404747U
Application number: CN201922159322.1U
Authority: CN
Inventors: 孙亚波; 宋志强; 张乐; 贾灿
Original assignee: China Mobile Communications Group Co Ltd; China Mobile IoT Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile IoT Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-09-01
Anticipated expiration: 2029-12-05

Abstract

An embodiment of the utility model provides an on-vehicle integrated antenna, include: the antenna comprises a 2G/3G/4G main set antenna, a 2G/3G/4G diversity antenna, an FM/AM antenna, a Global Navigation Satellite System (GNSS) antenna and a WIFI/Bluetooth antenna; the 2G/3G/4G main diversity antenna, the 2G/3G/4G diversity antenna, the FM/AM antenna, the GNSS antenna and the WIFI/Bluetooth antenna are arranged on a PCB bottom plate of the base printed circuit board; the 2G/3G/4G main set antenna, the 2G/3G/4G diversity antenna and the FM/AM antenna adopt PCB printed antennas; the WIFI/Bluetooth antenna adopts a PCB printed antenna or a bracket antenna. The utility model discloses a scheme can reduce the actual design size of antenna, has shortened simultaneously all antenna connecting lines to terminal equipment's length, reduce cost, the integration installation of being convenient for.

Description

Vehicle-mounted integrated antenna

Technical Field

The utility model relates to a technical field of the thing networking especially indicates a vehicle-mounted integrated antenna.

Background

With the coming of the internet of vehicles era, the application of the vehicle-mounted antenna is more diversified, so as to meet the higher and higher requirements of people on information transmission, entertainment, positioning navigation and safety. Currently, vehicle-mounted antennas have various designs, including the following:

1. the communication antenna is usually installed in the central control or at the lower end of the front windshield.

The AM/FM radio antenna uses a telescopic antenna, holes are formed in two sides of the head of the automobile, the AM/FM radio antenna is fixed outside the automobile, or a non-telescopic antenna is fixed on the roof of the automobile, or a printed antenna is directly embedded into the rear window glass, but the shapes of the vehicle-mounted AM/FM radio antenna are different, particularly the mainstream rod-shaped or whip-shaped AM/FM radio antenna is not coordinated with the automobile body, and the appearance is not smooth.

GNSS (Global navigation satellite System and) navigation antenna, the placement position is more flexible, and the manufacturers fix the antenna in different modes before the pilot vehicle drives, in the A/B column and in front of or behind the roof of the vehicle.

4. With the progress of the technology, some antenna manufacturers use an antenna integration technology to integrate a communication 2G antenna and a GPS antenna into one antenna, and the antenna is used by a vehicle-mounted terminal through a corresponding connector. But the product is upgraded slowly, the communication antenna is usually only in a 2G frequency band, the latest 4G is not covered, and WIFI/Bluetooth is not supported. The navigation antenna is usually limited to a single mode or a dual mode, and does not cover navigation frequency bands of GPS, Beidou, GLONASS and the like; and the antenna integration level is low, and the AM/FM antenna is not integrated into the combined antenna.

5. Meanwhile, the unreasonable layout of the combined antenna leads to the fact that the antenna is too large in size, the antenna is too complex in shape, the overall manufacturing cost is increased, meanwhile, the radiation performance of the antenna, including the direction and the efficiency of the antenna and the isolation between the antennas, is not enough, the overall performance of the antenna is poor, the user experience is influenced, and the actual application experience is not good.

6. At present, the integrated antenna can not meet the requirement of MIMO and is provided with a 4G MAIN (MAIN antenna), a 4G (DIV) diversity antenna and a multi-WIFI/Bluetooth antenna.

At present, most of vehicle-mounted integrated antennas adopt integrated main diversity antennas, FM/AM antennas and GNSS antennas, the main diversity antennas and the FM/AM antennas have various forms, the manufacturing process is complex, the structure is complex, the assembly process is more, the production cost is high, and the isolation between the antennas is difficult to meet more than or equal to-15 dB. The integrated antenna integrates a main diversity antenna, an FM/AM antenna and a GNSS antenna and also integrates double WIFI/Bluetooth (WIFI supports 2.4G and 5G), and the isolation of each antenna is larger than or equal to-15 dB.

Because the size of the whole antenna is increased due to the existence of the FM/AM antenna, the PCB printed antenna is adopted in the scheme, the size of the FM/AM antenna can be reduced, the size of the whole antenna is reduced, other antennas comprise main diversity antennas and all adopt the PCB printed antenna (except the GNSS antenna), the PCB printed antenna is lower in cost, simple in structure and convenient to assemble, and the whole cost of the antenna can be greatly reduced. Due to the size requirement of an antenna, placing so many antennas in a fixed space greatly increases the mutual interference between the antennas, which makes it difficult to realize that the main diversity antenna is intended to cover all 2/3/4G bands, especially the low band B5/B8.

SUMMERY OF THE UTILITY MODEL

The utility model provides a vehicle-mounted integrated antenna. The practical design size of the antenna can be reduced, the length from all the antenna connecting lines to the terminal equipment is shortened, the cost is reduced, and the integrated installation is facilitated.

In order to solve the above technical problem, an embodiment of the present invention provides the following solutions:

an on-vehicle integrated antenna, comprising: the antenna comprises a 2G/3G/4G main set antenna, a 2G/3G/4G diversity antenna, an FM/AM antenna, a Global Navigation Satellite System (GNSS) antenna and a WIFI/Bluetooth antenna;

the 2G/3G/4G main diversity antenna, the 2G/3G/4G diversity antenna, the FM/AM antenna, the GNSS antenna and the WIFI/Bluetooth antenna are arranged on a PCB bottom plate of the base printed circuit board;

the 2G/3G/4G main set antenna, the 2G/3G/4G diversity antenna and the FM/AM antenna adopt PCB printed antennas;

the WIFI/Bluetooth antenna adopts a PCB printed antenna or a bracket antenna.

Optionally, the front and back of the base PCB chassis except the antenna area are covered with copper.

Optionally, the PCB where the 2G/3G/4G main antenna is located is inserted into the base PCB, and the copper exposed through the base PCB and the copper exposed through the 2G/3G/4G main antenna are welded and fixed to the base PCB and perpendicular to the base PCB.

Optionally, feeding is performed in the middle of the PCB where the 2G/3G/4G main set antenna is located, an antenna copper wire with a first width is carved from a feeding point, and main traces meeting all frequency bands of the 2G/3G/4G main set antenna are carved;

and etching a copper wire with a first width at the second width position of the feeding point, wherein the copper wire is connected with the base PCB, the copper wire is a parasitic antenna of the 2G/3G/4G main set antenna, and the feeding point is connected with a radio frequency wire and is connected to the outside of the integrated antenna.

Optionally, the PCB where the 2G/3G/4G diversity antenna is located is inserted into the base PCB bottom plate, and is fixed on the base PCB bottom plate and perpendicular to the base PCB bottom plate by welding the copper exposed from the base PCB bottom plate and the copper exposed from the 2G/3G/4G diversity antenna.

Optionally, feeding is performed in the middle of a PCB where the 2G/3G/4G diversity antenna is located, an antenna copper wire with a first width is carved from a feeding point, and main traces meeting all frequency bands of the 2G/3G/4G diversity antenna are carved;

and etching a copper wire with a first width at the second width spaced from the feed point, wherein the copper wire is connected with the base PCB, the copper wire is a parasitic antenna of the 2G/3G/4G diversity antenna, and the feed point is connected with a radio frequency wire and is connected to the outside of the integrated antenna.

Optionally, the PCB where the FM/AM antenna is located is inserted into the base PCB bottom plate, and is fixed on the base PCB bottom plate and perpendicular to the base PCB bottom plate by welding the copper exposed from the base PCB bottom plate and the copper exposed from the FM/AM antenna.

Optionally, the FM/AM antenna is fed from the middle of the PCB where the FM/AM antenna is located, an antenna copper wire with a first width is carved from a feeding point, and the feeding point is connected to a radio frequency wire and connected to the outside of the integrated antenna.

Optionally, the WIFI/bluetooth antenna covers a 2.4G/5G WIFI frequency band and a bluetooth frequency band;

when the WIFI/Bluetooth antenna is a PCB printed antenna, a PCB where the WIFI/Bluetooth antenna is located is carved on the base PCB bottom plate, the area where the WIFI/Bluetooth antenna is located and the front side and the back side of the base PCB bottom plate are both provided with clearance areas without copper, a feed point is arranged at a preset distance away from the width sides of the clearance areas, the antenna routing is carved along the feed point, and the routing of the 2.4G/5G WIFI antenna is carved in the clearance areas;

the WIFI/Bluetooth antenna is a support antenna, the support is fixed in the clearance area, the feed point is arranged at a preset distance away from the width side of the clearance area, and a steel sheet of the 2.4G/5G WIFI antenna is fixed on the support along the feed point.

Optionally, the GNSS antenna is a ceramic antenna.

The above technical scheme of the utility model at least include following beneficial effect:

above-mentioned scheme integration antenna, integrated more standard antennas, contain FM/AM antenna, 2G 3G 4G owner and collect antenna and diversity antenna, GNSS antenna and WIFI/bluetooth (bluetooth) antenna, FM/AM antenna, 2G 3G 4G owner branch antenna adopt PCB printed antenna form simultaneously, WIFI/bluetooth antenna adopts printed antenna or support antenna form, has reduced design size and cost greatly.

Drawings

Fig. 1 is a schematic structural diagram of the vehicle-mounted integrated antenna of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As shown in fig. 1, an embodiment of the utility model provides an on-vehicle integrated antenna, include: the system comprises a 2G/3G/4G main set antenna 11, a 2G/3G/4G diversity antenna 12, an FM/AM antenna 13, a Global Navigation Satellite System (GNSS) antenna 15 and a WIFI/Bluetooth antenna 14;

the 2G/3G/4G main diversity antenna 11, the 2G/3G/4G diversity antenna 12, the FM/AM antenna, the GNSS antenna 15 and the WIFI/Bluetooth antenna 14 are arranged on a base printed circuit board PCB bottom plate 10;

the 2G/3G/4G main set antenna 11, the 2G/3G/4G diversity antenna 12 and the FM/AM antenna 13 adopt PCB printed antennas;

the WIFI/Bluetooth antenna 14 is a PCB printed antenna or a bracket antenna.

In an alternative embodiment of the present invention, the front and back of the base PCB chassis 10 except the antenna area are all covered with copper. In this embodiment, the base PCB chassis 10 is copper-clad on both sides except for the corresponding antenna area for reference.

The utility model discloses an in an optional embodiment, the PCB board that 2G 3G 4G owner collects antenna 11 place with base PCB bottom plate 10 pegs graft, through base PCB bottom plate 10 expose copper with the copper that 2G 3G 4G owner collected antenna 11 exposes, welded fastening is in on the base PCB bottom plate 10, and with base PCB bottom plate 10 is perpendicular.

Feeding electricity to the middle of the PCB where the 2G/3G/4G main set antenna 11 is located, etching an antenna copper wire with a first width from a feeding point, and etching main wiring meeting all frequency bands of the 2G/3G/4G main set antenna 11;

and a copper wire with a first width is further engraved at the second width position of the feeding point, the copper wire is connected with the base PCB, the copper wire is a parasitic antenna of the 2G/3G/4G main antenna assembly 11, and the feeding point is connected with a radio frequency wire and is connected to the outside of the integrated antenna.

In this embodiment, the 2G/3G/4G main antenna 11 adopts a PCB printed antenna, covers all frequency bands of 2G/3G/4G, the PCB where the 2G/3G/4G main antenna 11 is located is 40mm high, 35mm wide and 10mm thick, and is vertically fixed on the base PCB bottom plate, copper exposed from the front and back sides of the bottom of the PCB and copper exposed from the printed antenna area of the base PCB bottom plate 10 are welded and reinforced, and two 5mm long and 5mm high 20mm protruded parts are left in the middle of the bottom of the PCB so as to be inserted on the base PCB bottom plate. In the middle feeding of the PCB, an antenna copper wire with the width of 1mm is carved from a feeding point, copper wires meeting all frequency bands of 2G/3G/4G are carved, and the copper wire is a main wiring of the diversity antenna. 2mm of interval feed point carve again 1mm wide length about 10mm vertically copper line, this copper line and base PCB bottom plate ground are connected, and this is walked line and is parasitic antenna, through walking the coupling effect of line with the owner and produce required resonance frequency channel, and the resonance frequency channel can be through this high adjustment of walking the line. The feed point is connected with the radio frequency line and connected to the outside of the integrated antenna.

The utility model discloses an in an optional embodiment, the PCB board that 2G 3G 4G diversity antenna 12 belonged to with base PCB bottom plate 10 pegs graft, through the copper that base PCB bottom plate 10 exposes with the copper welding that 2G 3G 4G diversity antenna exposes is fixed on the base PCB bottom plate 10, and with base PCB bottom plate 10 is perpendicular.

Feeding the middle of the PCB where the 2G/3G/4G diversity antenna 12 is located, etching an antenna copper wire with a first width from a feeding point, and etching main wires meeting all frequency bands of the 2G/3G/4G diversity antenna;

and a copper wire with a first width is further engraved at the second width position at the interval of the feeding point, the copper wire is connected with the base PCB, the copper wire is a parasitic antenna of the 2G/3G/4G diversity antenna 12, and the feeding point is connected with a radio frequency wire and is connected to the outside of the integrated antenna.

In this embodiment, the 2G/3G/4G diversity antenna 12 is a PCB printed antenna, covering all frequency bands of 2G/3G/4G, the PCB board where the 2G/3G/4G diversity antenna 12 is located has a height of 45mm, a width of 25mm, and a thickness of 10mm, and is vertically fixed on the base PCB board 10, the copper exposed on the front and rear sides of the bottom of the PCB board and the copper exposed on the area where the base PCB board is located are soldered and reinforced, and two 5mm long and 5mm high 15mm apart protruding portions are left in the middle of the bottom of the PCB board so as to be inserted on the base PCB board 10. In the middle feeding of the PCB, an antenna copper wire with the width of 1mm is carved from a feeding point, copper wires meeting all frequency bands of 2G/3G/4G are carved, and the copper wire is a main wiring of the diversity antenna. 2mm of interval feed point carve again 1mm wide length about 10mm vertically copper line, this copper line and base PCB bottom plate ground are connected, and this is walked line and is parasitic antenna, through walking the coupling effect of line with the owner and produce required resonance frequency channel, and the resonance frequency channel can be through this high adjustment of walking the line. The feed point is connected with the radio frequency line and connected to the outside of the integrated antenna.

In an optional embodiment of the present invention, the PCB board where the FM/AM antenna 13 is located and the base PCB bottom plate 10 are inserted, through the copper exposed on the base PCB bottom plate 10 and the copper welding exposed on the FM/AM antenna 13 are fixed on the base PCB bottom plate 10 and perpendicular to the base PCB bottom plate 10, the copper exposed area 100 of the FM/AM antenna 13 is as shown in fig. 1.

Feeding in the middle of the PCB where the FM/AM antenna is located, carving an antenna copper wire with a first width from a feeding point, and connecting a radio frequency wire to the outside of the integrated antenna at the feeding point.

In this embodiment, FM/AM antenna adopts PCB printed antenna, and this FM/AM antenna is located PCB board height 55mm, wide 35mm, and thickness 10mm, vertical fixation on base PCB bottom plate 10, and through the copper that exposes and the copper welding reinforcement that the base PCB bottom plate 10 printed antenna place region exposes of the front and back two sides of PCB bottom, the PCB bottom middle leave two 5mm length height 5mm interval 15 mm's protruding part so that insert on base PCB bottom plate. In the middle feeding of the PCB, 1mm wide antenna copper wires are carved from a feeding point, copper wires meeting FM/AM frequency bands are carved, and the feeding point is connected with a radio frequency wire and connected to the outside of the integrated antenna.

In an optional embodiment of the present invention, the WIFI/bluetooth antenna 14 covers a 2.4G/5G WIFI frequency band and a bluetooth frequency band;

In this embodiment, the WIFI/Bluetooth antenna adopts a PCB printed antenna or a bracket antenna, covering a 2.4G/5 gwififi frequency band and a Bluetooth frequency band. When the WIFI/Bluetooth antenna adopts a PCB printed antenna, the WIFI/Bluetooth antenna is carved on the base PCB bottom plate, the front side and the back side of the base PCB bottom plate of the area where the antenna is located are both provided with copper-free areas (clearance areas) with the length of about 30mm and the width of 15mm, and one long edge of each clearance area is the edge of the base bottom plate. The feed point is arranged at a position 5mm away from the width side of the clearance area, the antenna wiring is carved along the feed point, and the wiring of the 2.4G/5G WIFI antenna is carved in the clearance area. If the antenna is a support antenna, the plastic support is fixed in the upper clearance area, the support is 25mm long and 10mm wide and 10mm high, the feeding mode is the same as that of the PCB printed WIFI antenna, and the steel sheet length of the 2.4G/5 GWIFII antenna is fixed on the support along the feeding point.

In an optional embodiment of the present invention, the GNSS antenna 15 is a ceramic antenna. The GNSS antenna 15 is a ceramic antenna, and covers the navigation frequency bands of the GPS, the beidou, the GLONASS, and the like, and the ceramic antenna is 40mm by 4 mm.

In the present application, the base PCB baseboard 10 is fixedly connected to the first fixing frame 200, the first fixing frame 200 is fixed to the second fixing frame 201, and the second fixing frame is fixed to the third fixing frame 202, the antenna includes a 2G/3G/4G main set antenna, a 2G/3G/4G diversity antenna, an FM/AM antenna, a GNSS antenna, and a WIFI/Bluetooth antenna, wherein the 2G/3G/4G main set antenna, the 2G/3G/4G diversity antenna, the FM/AM antenna, the GNSS antenna, the WIFI/Bluetooth antenna are disposed on the base PCB, the 2G/3G/4G main set antenna, the 2G/3G/4G diversity antenna, the FM/AM antenna are PCB printed antennas, the WIFI/Bluetooth antenna is PCB printed antenna or a bracket antenna, simple manufacture, convenient setting, reduction actual design size have reduced all antenna connecting wire to terminal equipment's length simultaneously, reduce the cost greatly.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An on-vehicle integrated antenna, characterized by comprising: the antenna comprises a 2G/3G/4G main set antenna, a 2G/3G/4G diversity antenna, an FM/AM antenna, a Global Navigation Satellite System (GNSS) antenna and a WIFI/Bluetooth antenna;

the 2G/3G/4G main diversity antenna, the 2G/3G/4G diversity antenna, the FM/AM antenna, the GNSS antenna and the WIFI/Bluetooth antenna are arranged on a base printed circuit board bottom plate;

the 2G/3G/4G main set antenna, the 2G/3G/4G diversity antenna and the FM/AM antenna adopt printed circuit board printed antennas;

the WIFI/Bluetooth antenna adopts a printed circuit board printed antenna or a bracket antenna.

2. The vehicle integrated antenna of claim 1, wherein the base printed circuit board chassis is covered with copper on both front and back sides except for the antenna area.

3. The vehicle-mounted integrated antenna according to claim 2, wherein the printed circuit board on which the 2G/3G/4G main antenna is located is plugged with the base printed circuit board base plate, and the copper exposed out of the base printed circuit board base plate and the copper exposed out of the 2G/3G/4G main antenna are fixed on the base printed circuit board base plate in a welding manner and are perpendicular to the base printed circuit board base plate.

4. The vehicle-mounted integrated antenna according to claim 3, wherein the printed circuit board on which the 2G/3G/4G main antenna is located is fed in the middle, an antenna copper wire with a first width is carved from a feeding point, and main wiring meeting all frequency bands of the 2G/3G/4G main antenna is carved;

and etching a copper wire with a first width at the second width position of the feeding point, wherein the copper wire is connected with the bottom plate of the base printed circuit board, the copper wire is a parasitic antenna of the 2G/3G/4G main set antenna, and the feeding point is connected with a radio frequency wire and is connected to the outside of the integrated antenna.

5. The vehicle-mounted integrated antenna according to claim 2, wherein the printed circuit board on which the 2G/3G/4G diversity antenna is located is plugged with the base printed circuit board base plate, and is fixed on the base printed circuit board base plate and perpendicular to the base printed circuit board base plate by welding the copper exposed on the base printed circuit board base plate and the copper exposed on the 2G/3G/4G diversity antenna.

6. The vehicle-mounted integrated antenna according to claim 5, wherein the printed circuit board on which the 2G/3G/4G diversity antenna is located is fed in the middle, an antenna copper wire with a first width is carved from a feeding point, and main wires meeting all frequency bands of the 2G/3G/4G diversity antenna are carved;

and etching a copper wire with a first width at a position spaced by the second width of the feed point, wherein the copper wire is connected with the base printed circuit board bottom plate, the copper wire is a parasitic antenna of the 2G/3G/4G diversity antenna, and the feed point is connected with a radio frequency wire and is connected to the outside of the integrated antenna.

7. The vehicle-mounted integrated antenna according to claim 2, wherein the printed circuit board on which the FM/AM antenna is located is plugged into the base printed circuit board bottom plate, and is fixed on the base printed circuit board bottom plate and perpendicular to the base printed circuit board bottom plate by welding the copper exposed from the base printed circuit board bottom plate and the copper exposed from the FM/AM antenna.

8. The integrated vehicle antenna of claim 7, wherein the FM/AM antenna is formed by cutting copper wires of a first width from a feeding point of a printed circuit board, and the feeding point is connected to a radio frequency line to the outside of the integrated antenna.

9. The vehicle-mounted integrated antenna of claim 2, wherein the WIFI/Bluetooth antenna covers a 2.4G/5G WIFI frequency band and a Bluetooth frequency band;

when the WIFI/Bluetooth antenna is a printed circuit board printed antenna, the printed circuit board where the WIFI/Bluetooth antenna is located is carved on the base printed circuit board bottom plate, the area where the WIFI/Bluetooth antenna is located and the front side and the back side of the base printed circuit board bottom plate are both provided with clearance areas without covering copper, the feed point is arranged at a preset distance away from the wide sides of the clearance areas, the antenna is carved along the feed point, and the routing of the 2.4G/5G WIFI antenna is carved in the clearance areas;

10. The vehicle-mounted integrated antenna according to claim 1, wherein the GNSS antenna is a ceramic antenna.