CN218385739U

CN218385739U - LTE & NR5G full-band miniaturized antenna

Info

Publication number: CN218385739U
Application number: CN202222206254.1U
Authority: CN
Inventors: 张繁荣; 张剑飞
Original assignee: Anray Communication Technology Co ltd
Current assignee: Anray Communication Technology Co ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-01-24
Anticipated expiration: 2032-08-22

Abstract

The utility model discloses a LTE & NR5G full frequency band miniaturized antenna, it includes a PCB base plate and corrodes antenna array and the magnetic ring that forms on this PCB base plate. The PCB substrate is an FR-4 or 22F substrate with a single-sided copper-clad layer, and the length of the PCB substrate is 110-115 mm, and the width of the PCB substrate is 15-17 mm. The antenna array is composed of a signal line array and a ground line array. The coaxial cable penetrates through the magnetic ring, a signal wire of the coaxial cable is connected with the signal wire array, and a ground wire of the coaxial cable is connected with the ground wire array, so that the LTE & NR5G full-band miniaturized antenna is formed. The utility model has the advantages of wide frequency band, miniaturization and low cost.

Description

LTE & NR5G full-band miniaturized antenna

Technical Field

The utility model relates to a LTE & NR5G full frequency band miniaturized antenna. The utility model belongs to the technical field of antenna design and manufacturing.

Background

The LTE communication technology is mainly applied to the fields of text, voice, and video communications, such as wearable devices, mobile payment, shared economy, location services, and the like. The NR communication technology is mainly applied to the communication fields requiring high speed and low delay, such as unmanned driving, industrial automation, internet of things and the like.

The LTE is a fourth-generation communication technology, comprises two network systems of LTE-FDD and TDD-LTE, improves and enhances the same access technology of 3G communication, and improves the aspects of signal coverage, mobility, data delay, frequency spectrum efficiency and the like. NR is a fifth generation communication technology, and is a digital cellular network based on a new generation cellular mobile technology, which has performance characteristics of faster data transmission rate, lower network delay, and ultra-large network capacity.

An LTE & NR5G antenna is an antenna mounted on a 5G communication device employing LTE or NR communication technology. Currently, the main drawbacks of LTE & NR5G antennas in practical applications are: 1. the volume is large, the area of the PCB substrate in the PCB is large, about 135x16mm or more, and the requirement of customers cannot be met; 2. the full band requirement cannot be achieved.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is an object of the present invention to provide an LTE & NR5G full band miniaturized antenna.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an LTE & NR5G full-band miniaturized antenna comprises a PCB substrate, and a signal line oscillator and a ground line oscillator which are formed on the PCB substrate through corrosion;

the PCB substrate is a substrate board with a single-sided copper-clad layer, the length of the substrate board is 110-115 mm, the width of the substrate board is 15-17 mm, and the signal line oscillator and the ground line oscillator are formed on the PCB substrate board by adopting direct corrosion of good conductor copper;

the signal line array consists of a linear impedance matching line section and a tail section of the snake-shaped routing; the impedance matching line section consists of four sections from front to back, the length of a first section line section at the foremost end is 15-18 mm, and the line width is 2-3 mm; the length of the second section line is 11-12.5 mm, and the line width is 1-2 mm; the length of the third section line is 11-12.5 mm, and the line width is 0.5-1.5 mm; the length of the fourth segment is 10-11.5 mm, and the line width is 0.2-1.2 mm; the tail section line width of the snake-shaped routing is 2.8-3.5 mm, and the tail section line width is wired on the PCB substrate board to the maximum length;

the clearance between the top end of the linear impedance matching line section of the signal line array and the ground line array is 0.5-1.5 mm;

the ground line array is arranged on the PCB substrate in a loop shape, the length of the ground line array in the loop shape is 68-73 mm, and the width of the ground line array in the loop shape is 14-16 mm; the minimum distance between lines forming the loop-shaped ground wire array is 0.1-0.5 mm;

the signal wire of the coaxial cable is connected with the signal wire array, and the ground wire of the coaxial cable is connected with the ground wire array.

The LTE & NR5G full-band miniaturized antenna also comprises a magnetic ring; the distance between the magnetic ring and the edge of the PCB substrate board is 75-95 mm; the coaxial cable passes through the magnetic ring, the signal wire of the coaxial cable is connected with the signal wire array, and the ground wire of the coaxial cable is connected with the ground wire array.

In the preferred embodiment of the present invention, the inner diameter of the magnetic ring is 1.5-2.5 mm, the outer diameter is 3-5 mm, and the length is 8-12 mm.

In a preferred embodiment of the present invention, the magnetic ring is fixed on the coaxial cable by a heat shrink tube with glue.

In the preferred embodiment of the present invention, the PCB substrate is a single-sided copper-clad FR-4 or 22F substrate board.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the antenna array of the present invention;

fig. 3 is a schematic cross-sectional view of the anti-creeping magnetic ring of the antenna of the present invention;

fig. 4 is the standing wave diagram of the antenna of the present invention.

Detailed Description

The structure and features of the present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that various modifications can be made to the embodiments disclosed herein, and therefore, the embodiments disclosed in the specification should not be construed as limiting the present invention, but merely as exemplifications of the embodiments, which are intended to make the features of the present invention apparent.

As shown in fig. 1 and 2, the utility model discloses a miniaturized antenna of full frequency band of LTE & NR5G includes PCB base plate 1, corrodes signal line array 2 and ground wire array 3, the magnetic ring 4 that forms on this PCB base plate. The PCB substrate 1 is an FR-4 or 22F substrate with a copper-clad single surface, and has a length L1=110 to 115mm and a width W1=15 to 17mm. A signal line array 2 and a ground line array 3 are formed on the PCB substrate board by adopting the direct corrosion of good conductor copper.

The signal line array 2 is composed of a linear impedance matching line section 21 and a tail section 22 of a snake-shaped routing; the impedance matching line segment 21 is formed by four segments from front to back, the length L3 of the first segment at the foremost end is 15-18 mm, and the width W3 is 2-3 mm; the length L4 of the second section is 11-12.5 mm, and the width W4 is 1-2 mm; the length L5 of the third section is 11-12.5 mm, and the width W5 is 0.5-1.5 mm; the length L6 of the fourth section is 10-11.5 mm, and the width W6 is 0.2-1.2 mm; the tail section 22 of the snake-shaped routing can be wired in the limited area of the PCB substrate board 1 to the maximum length as possible so as to increase the sub-length of the signal linear array, and the width W8 of the tail section is 2.8-3.5 mm.

The gap L2 between the top of the signal line array 21 and the ground line array 3 is 0.5-1.5 mm.

The ground line array 3 is in a loop shape, the length L7 of the loop-shaped ground line array 3 is 68-73 mm, and the width W7 is 14-16 mm. The width of the lines constituting the loop ground line array 3 is not strictly required, but the minimum pitch W2 between the lines constituting the loop ground line array is 0.1 to 0.5mm.

In order to make the utility model have the characteristics of full frequency band, as shown in fig. 1 and fig. 3, the utility model comprises a magnetic ring 4, the inner diameter of which is

1.5-2.5 mm in outside diameter

3-5 and 8-12 mm in length. When the antenna is assembled, the distance L8 between the magnetic ring 4 and the edge of the PCB substrate board 1 is 75-95 mm; the utility model has the characteristic of full frequency band by adjusting the distance L8 between the magnetic ring 4 and the edge of the PCB substrate board 1. The coaxial cable 5 passes through the magnetic ring 4, the signal wire is connected with the signal wire array 2, the ground wire is connected with the ground wire array 3, the magnetic ring 4 can not only prevent the current in the cable from leaking outwards,and also improves the antenna standing wave.

In the preferred embodiment of the present invention, the magnetic ring 4 is fixed on the coaxial cable 5 by a heat shrink tube with glue.

The utility model discloses an optimize the impedance matching line section 21 of debugging signal line array 2 repeatedly, snakelike tail section 22 of walking the line and the shape and the size of ground wire array 3 to and the position of magnetic ring 4 on coaxial cable 5, optimize the standing wave of the full band antenna of LTE & NR5G, make its voltage standing wave ratio <2.5, as shown in fig. 4.

The utility model has the advantages that: the requirement of the full frequency band is met with the advantage of small size; the volume is small, the weight is light, and the method can be widely applied to 5G communication equipment with LTE & NR technology.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a miniaturized antenna of LTE & NR5G full frequency band which characterized in that: the PCB comprises a PCB substrate, and a signal line array and a ground line array which are formed on the PCB substrate by corrosion;

the signal line array is composed of a linear impedance matching line section and a tail section of a snake-shaped routing; the linear impedance matching line section consists of four sections from front to back, the length of the first section at the foremost end is 15-18 mm, and the line width is 2-3 mm; the length of the second section line is 11-12.5 mm, and the line width is 1-2 mm; the length of the third section line is 11-12.5 mm, and the line width is 0.5-1.5 mm; the length of the fourth segment is 10-11.5 mm, and the line width is 0.2-1.2 mm; the tail section line width of the snake-shaped routing is 2.8-3.5 mm, and the tail section line width is wired on the PCB substrate board to the maximum length;

2. The LTE & NR5G full band miniaturized antenna of claim 1, wherein: it also includes a magnetic ring; the distance between the magnetic ring and the edge of the PCB substrate board is 75-95 mm;

the coaxial cable passes through the magnetic ring, the signal wire of the coaxial cable is connected with the signal wire array, and the ground wire of the coaxial cable is connected with the ground wire array.

3. The LTE & NR5G full band miniaturized antenna of claim 2, wherein: the inner diameter of the magnetic ring is 1.5-2.5 mm, the outer diameter is 3-5 mm, and the length is 8-12 mm.

4. The LTE & NR5G full band miniaturized antenna of claim 3, wherein: the magnetic ring is fixed on the coaxial cable through the heat shrink tube with the glue.

5. The LTE & NR5G full-band miniaturized antenna of claim 4, wherein: the PCB substrate is an FR-4 or 22F substrate board with a single-sided copper coating.