Integrated low-profile 5G antenna

Abstract

The invention discloses an integrated low-profile 5G antenna. The integrated low-profile 5G antenna comprises a shell and an antenna end mounted in the shell, the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected, and the antenna end is located in a space formed by the upper shell and the lower shell; the antenna end comprises a circuit board and four groups of antennas which are installed on the circuit board and used for receiving / sending 5G signals, the four groups of antennas are respectively a Main antenna, an Aux antenna, a first Mimo antenna and a second Mimo antenna, the Main antenna and the Aux antenna are vertically arranged on a plane where the circuit board is located, and the Main antenna and the Aux antenna are in a wavy sawtooth shape. The antenna is small in size and low in profile, is convenient to install in a vehicle body, covers a 5G full frequency band, has good isolation, and can provide different antenna combinations according to requirements.

Description

Technical Field

[0001] The present invention belongs to the field of antenna technology, and in particular relates to an integrated low-profile 5G antenna. Background Art

[0002] The blueprint of 5G network is a high speed 100 times higher than 4G, reaching 10Gbit / s, low latency less than 1ms, supporting high density of more than 100 billion connections and high capacity 1000 times higher than 4G. It will be a trend to apply 5G antennas to vehicles to realize applications such as Internet of Vehicles and unmanned driving. With the development of intelligent automobiles, automobile antennas are not only for wireless LAN, mobile network, and positioning; Bluetooth antennas are also added to realize functions such as keyless entry and Internet of Things connection. Now the technology of domestic cars is becoming more and more mature. At present, automobiles are developing towards the direction of intelligent terminals, rather than simply driving tools, requiring more and more antennas to be integrated in the car to obtain information such as vehicles, roads, communications, positioning, environmental perception, and information processing.

[0003] New technologies put forward new requirements for automotive electronics. 5G / MIMO multiple-input multiple-output technology has multiple antennas at the transmitting and receiving ends, thereby doubling the system transmission rate and transmission quality without increasing the bandwidth. Multi-antenna technology has become a research hotspot for 5G wireless communications as an important way to improve communication systems. 2.5G T-Box antennas often require more than 4 5G antenna groups to improve data transmission rate and transmission quality. The increase in the number of antennas will lead to crowded antennas inside the T-Box and poor isolation, which will not only cause signal interference but also the following problems:

[0004] 1. In the past, antenna miniaturization was mainly targeted at a single antenna. However, with the application of MIMO antenna systems, the miniaturization of a single antenna cannot meet the size requirements of the entire antenna system.

[0005] 2. Currently, the mainstream antennas for cars are mostly shark fin antennas. However, with the development of automobile technology, changes in appearance aesthetics, and the increasing number of communication antennas, the traditional shark fin antenna cannot cover all antennas and does not conform to the simple appearance aesthetics. Being integrated into the car body has become an important requirement for car antennas.

[0006] 3. With the development of communication technology, the widespread popularization of 5G communication technology has become a trend. The high transmission rate it provides is the key to realizing the interconnection of intelligent terminal devices and intelligent driving.

[0007] 4. In the past, 5G antennas that could cover low frequencies up to 700MHz were relatively large, especially MIMO antenna systems that included multiple 5G antennas. Summary of the invention

[0008] The main technical problems that the present invention solves are the signal interference of the current 5G antenna box, the large design space occupied and the inability to take into account all frequency bands.

[0009] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0010] An integrated low-profile 5G antenna comprises a housing and an antenna end mounted in the housing;

[0011] The housing comprises an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected, and the antenna end is located in a space formed by the upper shell and the lower shell;

[0012] The antenna end includes a circuit board and four groups of antennas installed on the circuit board for receiving / sending 5G signals, the four groups of antennas are respectively a Main antenna, an Aux antenna, a first Mimo antenna, and a second Mimo antenna. The Main antenna and the Aux antenna are vertically arranged on the plane where the circuit board is located. The Main antenna and the Aux antenna are cross-arranged to form four partitions. The Main antenna and the Aux antenna are wavy and serrated. The first Mimo antenna and the second Mimo antenna are respectively arranged in any two of the partitions.

[0013] Furthermore, the intersection angle is 0 to 90 degrees.

[0014] Furthermore, the Main antenna and Aux antenna are Sub6GHz antennas, and their operating frequency ranges include: 3300MHz~4200MHz, 4400MHz~5000MHz, 5150MHz~5925MHz, 700MHz~960MHz, 1452MHz~1496MHz, 1710MHz~2170MHz, 2300MHz~2690MHz;

[0015] The operating frequency ranges of the first Mimo antenna and the second Mimo antenna include: 1452MHz~1496MHz; 1710MHz~2690MHz, 3300MHz~4200MHz; 4400MHz~5000MHz; 5150MHz~5925MHz.

[0016] Furthermore, one end of the Main antenna and the Aux antenna is connected to the circuit board base layer, and the other end is connected to the ground layer through a feeder link.

[0017] Furthermore, one end of the first Mimo antenna and the second Mimo antenna is connected to the circuit board base layer, and the other end is connected to the ground layer through a feeder link.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention has a small size and a low profile, is easy to install in the vehicle body, saves procurement and use costs, can be installed inside the car without affecting the appearance of the whole vehicle, can be installed near the front dashboard of the car, and other signal empty areas without metal shielding in the car.

[0020] 2. The ingenious layout of the antenna of the present invention realizes the integration of four antennas in a limited space, covering the full 5G frequency band and having good isolation.

[0021] 3. The present invention provides a modular vehicle-mounted 5G MIMO antenna solution, which can provide a combination of different antennas according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the antenna arrangement structure of the present invention;

[0024] Figure 3 It is the first slot (step 1) diagram of the present invention;

[0025] Figure 4 It is the second slot (step2) diagram of the present invention;

[0026] Figure 5 It is the third slot (step3) diagram of the present invention;

[0027] Figure 6 It is a frequency diagram of different slots of the present invention;

[0028] Figure 7 is the current intensity distribution diagram of this embodiment;

[0029] Figure 8 is the current vector distribution diagram of this embodiment;

[0030] Fig. 9 is the standing wave ratio diagram of this embodiment;

[0031] Fig.10 It is the 3D Gain Pattern (3D directional gain) diagram of the main antenna;

[0032] Fig.11 It is the Aux antenna 3D Gain Pattern (3D directional gain) diagram;

[0033] Fig.12 This is the first Mimo antenna 3D Gain Pattern (3D directional gain) diagram;

[0034] Fig.13This is the 3D Gain Pattern (3D directional gain) of the second Mimo antenna;

[0035] Fig.14 It is the 2D Gain Pattern (2D directional gain) diagram of the main antenna and Aux antenna at 0° direction;

[0037] Fig.15 It is the 2D Gain Pattern (2D directional gain) diagram of the main antenna and the Aux antenna at 90°.

[0039] Fig.16 It is the 2D GainPattern (2D directional gain) diagram of the first Mimo antenna and the second Mimo antenna at 0° direction;

[0040] Fig.17 It is the 2D GainPattern (2D directional gain) diagram of the first Mimo antenna and the second Mimo antenna at 90° direction;

[0041] The parts in the accompanying drawings are marked as follows:

[0042] 1. Shell; 11. Upper shell; 12. Lower shell; 2. Antenna end; 21. Main antenna; 22. Aux antenna; 23. First Mimo antenna; 24. Second Mimo antenna; 25. Circuit board; 251. Ground layer; 252. Base layer. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0044] Example:

[0045] like Figure 1 to Figure 2 As shown, an integrated low-profile 5G antenna includes a housing 1 and an antenna end 2 installed in the housing 1;

[0046] The housing 1 includes an upper shell 11 and a lower shell 12, the upper shell 11 and the lower shell 12 are fixedly connected, and the antenna end 2 is located in the space formed by the upper shell 11 and the lower shell 12; specifically, one end of the Main antenna 21 and the Aux antenna 22 are connected to the base layer 252 of the circuit board 25, and the other end is connected to the ground layer 251 through a feeder link. One end of the first Mimo antenna 23 and the second Mimo antenna 24 are connected to the base layer 252 of the circuit board 25, and the other end is connected to the ground layer 251 through a feeder link.

[0047] The antenna end 2 includes a circuit board 25 and four groups of antennas installed on the circuit board 25 for receiving / sending 5G signals. The four groups of antennas are respectively Main antenna 21, Aux antenna 22, first Mimo antenna 23, and second Mimo antenna 24. The Main antenna 21 and Aux antenna 22 are vertically arranged on the plane where the circuit board 25 is located. The Main antenna 21 and Aux antenna 22 are cross-arranged to form four partitions. The Main antenna 21 and Aux antenna 22 are wavy and serrated. The first Mimo antenna 23 and the second Mimo antenna 24 are respectively arranged in any two of the partitions. Specifically, the crossing angle is 0 to 90°. Specifically, the Main antenna 21 and the Aux antenna 22 are Sub6GHz antennas, and their operating frequency ranges include: 3300MHz~4200MHz, 4400MHz~5000MHz, 5150MHz~5925MHz, 700MHz~960MHz, 1452MHz~1496MHz, 1710MHz~2170MHz, 2300MHz~2690MHz;

[0048] The operating frequency ranges of the first Mimo antenna 23 and the second Mimo antenna 24 include: 1452MHz~1496MHz; 1710MHz~2690MHz, 3300MHz~4200MHz; 4400MHz~5000MHz; 5150MHz~5925MHz.

[0049] The connection between the Main antenna 21 and the Aux antenna 22 of the present invention and the ground layer 251 can have three types of slots, namely zero slot, half slot, and full slot. Figures 3 to 5 As shown, test its frequency, as shown in the attached Figure 6 As shown, zero slot is step 1, half slot is step 2, and full slot is step 3. It can be seen that full slot has the best effect. This embodiment adopts full slot.

[0050] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An integrated low-profile 5G antenna, characterized in that: It comprises a housing (1) and an antenna end (2) installed in the housing (1); The housing (1) comprises an upper shell (11) and a lower shell (12), the upper shell (11) and the lower shell (12) are fixedly connected, and the antenna end (2) is located in a space formed by the upper shell (11) and the lower shell (12); The antenna end (2) comprises a circuit board (25) and four groups of antennas mounted on the circuit board (25) for receiving / sending 5G signals, the four groups of antennas being respectively a Main antenna (21), an Aux antenna (22), a first Mimo antenna (23), and a second Mimo antenna (24). The Main antenna (21) and the Aux antenna (22) are vertically arranged on the plane where the circuit board (25) is located. The Main antenna (21) and the Aux antenna (22) are cross-arranged to form four partitions. The Main antenna (21) and the Aux antenna (22) are wavy and sawtooth-shaped. The first Mimo antenna (23) and the second Mimo antenna (24) are respectively arranged in any two of the partitions.

2. The integrated low-profile 5G antenna according to claim 1, characterized in that: The intersection angle is 0 to 90 degrees.

3. The integrated low-profile 5G antenna according to claim 1, characterized in that: The Main antenna (21) and the Aux antenna (22) are Sub6GHz antennas, and their operating frequency ranges include: 3300MHz to 4200MHz, 4400MHz to 5000MHz, 5150MHz to 5925MHz, 700MHz to 960MHz, 1452MHz to 1496MHz, 1710MHz to 2170MHz, and 2300MHz to 2690MHz; The operating frequency ranges of the first Mimo antenna (23) and the second Mimo antenna (24) include: 1452MHz to 1496MHz; 1710MHz to 2690MHz, 3300MHz to 4200MHz; 4400MHz to 5000MHz; 5150MHz to 5925MHz.

4. The integrated low-profile 5G antenna according to claim 1, characterized in that: One end of the Main antenna (21) and the Aux antenna (22) is connected to the base layer (252) of the circuit board (25), and the other end is connected to the ground layer (251) via a feeder link.

5. The integrated low-profile 5G antenna according to claim 1, characterized in that: One end of the first Mimo antenna (23) and the second Mimo antenna (24) are connected to the base layer (252) of the circuit board (25), and the other end is connected to the ground layer (251) through a feeder link.

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