CN214068905U - Mobile communication antenna device meeting MIMO (multiple input multiple output) - Google Patents

Abstract

The utility model relates to a satisfy MIMO's mobile communication antenna device, be in including box body, setting PCBA, a plurality of 5G antenna in the box body, PCBA on have a plurality of 5G antenna installation regions that are used for setting up the 5G antenna, set up a 5G antenna in every 5G antenna installation region, adjacent two 5G antenna between the distance be greater than 70 mm. The utility model integrates a plurality of 5G antennas in one box body, has high integration and moderate volume, simplifies the arrangement difficulty and improves the arrangement flexibility; the vertical polarization gain effect of the 5G signal is good, the overall gain is improved, the antenna performance, particularly the isolation between the antennas, is ensured on the premise of saving space to the maximum extent, and double-antenna low-frequency MIMO (lower than 2.3 GHz) and four-antenna high-frequency MIMO (higher than 2.3 GHz) are achieved.

Description

Mobile communication antenna device meeting MIMO (multiple input multiple output)

Technical Field

The utility model relates to a wireless communication field of automotive electronics, concretely relates to satisfy MIMO's mobile communication antenna device.

Background

In the prior art, at least 4 antennas are required for 5G communication to meet MIMO (multiple input multiple output) requirements, and since multiple antennas have the same frequency band and are easy to interfere with each other, discrete antenna layouts are mainly used in the current market, that is, 4 antennas are divided into 2 antennas for combined processing, and the form is complex in arrangement and complex in processing; the integrated antenna is mostly positioned in the roof antenna, the streamline shape of a car body can be damaged, the air resistance is increased, and meanwhile, the existing 4 x 5G antenna integrated module has large mutual interference among the antennas, so that the maximum efficacy of each antenna cannot be exerted.

Disclosure of Invention

The utility model aims at providing a satisfy MIMO's mobile communication antenna device for realize the 5G communication of car.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a satisfy MIMO's mobile communication antenna device, includes the box body, sets up PCBA, a plurality of 5G antenna in the box body, PCBA on have a plurality of 5G antenna installation areas that are used for setting up 5G antenna, set up a 5G antenna in every 5G antenna installation area, adjacent two 5G antenna between the distance be greater than 70 mm.

Preferably, the box body is square, and the PCBA is square.

Further preferably, the 5G antennas are no more than 4 and are distributed over the corners of the PCBA.

Preferably, the 5G antenna is provided with 4 antennas.

Preferably, the distance between two adjacent 5G antennas is less than 150 mm.

Preferably, the PCBA is provided with a SAW filter mounting area for mounting the SAW filter

Preferably, a GNSS mounting area for mounting a GNSS antenna is provided in the middle of the PCBA, and a gap greater than 0 is formed between the GNSS mounting area and the 5G antenna mounting area.

Preferably, the box body is provided with a plug, 4 output ends are integrated on the plug, and the plug is connected with the PCBA.

Preferably, only one plug is provided.

Preferably, the 5G antenna includes a first antenna portion and a second antenna portion having one end connected to one end of the first antenna portion, the other end of the second antenna portion is connected to the PCBA, the first antenna portion is parallel to the PCBA, and the second antenna portion is perpendicular to the PCBA.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model integrates a plurality of 5G antennas in one box body, has high integration and moderate volume, simplifies the arrangement difficulty and improves the arrangement flexibility; the vertical polarization gain effect of the 5G signal is good, the overall gain is improved, the antenna performance, particularly the isolation between the antennas, is ensured on the premise of saving space to the maximum extent, and double-antenna low-frequency MIMO (lower than 2.3 GHz) and four-antenna high-frequency MIMO (higher than 2.3 GHz) are achieved.

Drawings

Fig. 1 is a schematic perspective view of a mobile communication antenna device satisfying MIMO in this embodiment;

fig. 2 is a top view of the antenna device for mobile communication satisfying MIMO in this embodiment;

fig. 3 is a schematic perspective view of a mobile communication antenna device (without a box cover) satisfying MIMO in the present embodiment;

fig. 4 is a top view of a MIMO-compliant mobile communication antenna apparatus (without a box cover) according to this embodiment;

FIG. 5 is a schematic perspective view of a 5G antenna in this embodiment;

FIG. 6 is a diagram illustrating the test results of S parameters of a mobile communication antenna device (without a box cover) satisfying MIMO in the present embodiment;

FIG. 7 is a diagram illustrating the relationship between the efficiency and the frequency of a mobile communication antenna device (without a box cover) satisfying MIMO in this embodiment;

fig. 8-9 are diagrams of the predicted performance of the MIMO-compliant mobile communication antenna apparatus (without the lid) in the high frequency band in this embodiment.

In the above drawings: 1. a cartridge body; 2. a box cover; 3. PCBA; 4. a 5G antenna; 41. a first antenna section; 42. a second antenna section; 43. a third antenna section; 44. a support leg; 5. a vibration prevention section; 6. a plug; 7. an installation part.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the mobile communication antenna device satisfying MIMO includes a box body, a PCBA3 disposed in the box body, and a 5G antenna 4 disposed on the PCBA3, and conventionally, 4 antennas are required for 5G communication, so that 4 5G antennas 4 are also provided in this embodiment.

The box body is square, including box body 1 and lid 2, and the recess has all been seted up to corresponding position on box body 1, the lid 2, and when lid 2 lid closed on box body 1, two recesses formed into a through-hole on the lateral wall of box body, set up a plug 6 on the through-hole, and the one end of plug 6 is stretched into in the box body and is connected with PCBA3, and the other end of plug 6 stretches out the box body and is used for being connected with external equipment. Four output ends are integrated on the plug 6, so that single-plug four-output can be realized. Still be provided with installation department 7 on the box body 1, a hole has been seted up on installation department 7 at least, and installation department 7 is provided with two, is located the relative both sides of box body 1 respectively, and the through-hole is located the not equidirectional of box body with installation department 7, and the box body of being convenient for passes through installation department 7 and vehicle body coupling.

As shown in fig. 3 and 4, the PCBA3 is also square, the area size matches with the box body, and the PCBA3 is laid on the box body 1. Four corners of the PCBA3 are provided with a 5G antenna 4 mounting area, and each 5G antenna 4 mounting area is provided with a 5G antenna 4. In order to avoid mutual interference, the distance between two adjacent 5G antennas 4 is larger than 70mm, after the distance reaches a certain length, the mutual anti-interference effect change is weakened, and in order to ensure the portability and the proper size of the device, the distance between two adjacent 5G antennas 4 is smaller than 150 mm. The low-frequency isolation is poor due to the fact that the adjacent 5G antennas 4 are too close to each other, two 5G antennas 4 on one diagonal are set to be low-frequency dual-antenna MIMO, and two 5G antennas 4 on the other diagonal are correspondingly set to be high-frequency dual-antenna MIMO.

The PCBA3 is further provided with a GNSS installation area which is a preset installation area for increasing the possibility of adding GNSS antennas in the future, the GNSS installation area is located in the middle of the PCBA3, namely the middle of the four 5G antenna 4 installation areas, a gap larger than 0 is formed between the GNSS installation area and the G antenna installation areas, and it is guaranteed that the installed GNSS antennas and the 5G antennas 4 are not in contact and short-circuited. The PCBA3 also has SAW filter mounting areas, which are pre-defined to increase the likelihood of future SAW filter installations, to improve isolation from potential GNSS signals.

As shown in fig. 5, the 5G antenna 4 is a sheet-shaped metal radiating sheet and has a three-dimensional structure, the 5G antenna 4 includes a first antenna portion 41, a second antenna portion 42, and a third antenna portion 43, which are sheet-shaped, and the first antenna portion 41, the second antenna portion 42, and the third antenna portion 43 are integrally molded. One end of the second antenna portion 42 and one end of the third antenna portion 43 are both connected to one end of the first antenna portion 41, the second antenna portion 42 and the third antenna portion 43 are located on the same side of the first antenna portion 41, the other ends of the second antenna portion 42 and the third antenna portion 43 are both connected to PCBA3, the first antenna portion 41 is parallel to PCBA3, and the second antenna portion 42 and the third antenna portion 43 are both perpendicular to the first antenna portion 41 and PCBA 3. The length from one end of the first antenna part 41 to the other end plus the length from one end of the second antenna part 42 to the other end obtains a first length, the length from one end of the first antenna part 41 to the other end plus the length from one end of the second antenna part 42 to the other end obtains a second length, and the frequency range of the received signal is adjusted through the range of the first length and the second length, so that the length which meets the wavelength division of the received signal is physically achieved, and simultaneously, in order to avoid the interference of GNSS signals, the range of the first length and the second length is avoided from the interval of 45mm-52mm, and the gain is prevented from being too high in the GNSS frequency band of the antenna assembly. The second antenna portion 42 and the third antenna portion 43 are located at the same end of the first antenna portion 41, and do not contact each other, and have a gap. The first antenna portion 41 extends along the shape of a square in the plane thereof, and is not connected end to end, and there is a gap between the ends of the first antenna portion 41, and in this embodiment, the gap is located at a side close to the second antenna portion 42 and the third antenna portion 43. The other ends of the second antenna part 42 and the third antenna part 43 are provided with support legs 44, the support legs 44 are used for connecting the 5G antenna 4 with the PCBA3, the support legs 44 are provided with U-shaped clamping structures and can be clamped on the side edge of the PCBA3, protrusions are arranged on the support legs 44, depressions are arranged on the PCBA3, the protrusions and the depressions correspond to each other, the 5G antenna 4 is positioned on the PCBA3, and after the support legs 44 are connected on the PCBA3, the support legs are further fixed through welding. The first antenna unit 41 is provided with the vibration-proof unit 5, and is provided on the same side of the first antenna unit 41 as the second antenna unit 42 and the third antenna unit 43, between the first antenna unit 41 and PCBA 3. The shockproof part 5 is used for providing support, preventing the 5G antenna 4 from shaking, ensuring that the height of the 5G antenna 4 is not changed when vibration, impact and the like occur, and ensuring performance consistency, and in the embodiment, the shockproof part 5 is a sponge gasket.

As shown in fig. 6-7, the matching is small (greater than-5 dB) in the 1.5GHz band (GNSS), AUT Ver is the vertical polarization gain, AUT Hor is the horizontal polarization gain, and AUT Tot is the overall gain. As shown in fig. 8-9, performance is expected for high band (5G) signals.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. A mobile communication antenna device satisfying MIMO is characterized in that: be in including box body, setting PCBA, a plurality of 5G antenna in the box body, PCBA on have a plurality of 5G antenna installation areas that are used for setting up 5G antenna, set up a 5G antenna in every 5G antenna installation area, adjacent two 5G antenna between the distance be greater than 70 mm.

2. The antenna device for mobile communication satisfying MIMO according to claim 1, wherein: the box body be square, PCBA be square.

3. The antenna device for mobile communication satisfying MIMO according to claim 2, wherein: the 5G antennas are not more than 4 and are distributed at the corners of the PCBA.

4. The antenna device for mobile communication satisfying MIMO according to claim 1, wherein: the number of the 5G antennas is 4.

5. The antenna device for mobile communication satisfying MIMO according to claim 1, wherein: the distance between two adjacent 5G antennas is less than 150 mm.

6. The antenna device for mobile communication satisfying MIMO according to claim 1, wherein: the PCBA is provided with an SAW filter mounting area for mounting the SAW filter.

7. The antenna device for mobile communication satisfying MIMO according to claim 1, wherein: the middle part of PCBA be provided with the GNSS installation region that is used for installing the GNSS antenna, GNSS installation region with 5G antenna installation region between form the clearance that is greater than 0.

8. The antenna device for mobile communication satisfying MIMO according to claim 1, wherein: the box body on set up the plug, the plug on integrated 4 output ends, the plug with PCBA be connected.

9. The antenna device for mobile communication satisfying MIMO according to claim 8, wherein: only one plug is arranged.

10. The antenna device for mobile communication satisfying MIMO according to claim 1, wherein: the 5G antenna comprises a first antenna part and a second antenna part, wherein one end of the second antenna part is connected with one end of the first antenna part, the other end of the second antenna part is connected with the PCBA, the first antenna part is parallel to the PCBA, and the second antenna part is perpendicular to the PCBA.

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