CN213782261U

CN213782261U - Small-sized double-frequency double-fed external omnidirectional antenna

Info

Publication number: CN213782261U
Application number: CN202023156018.0U
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: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-07-23
Anticipated expiration: 2030-12-24

Abstract

The utility model provides an external omnidirectional antenna of small-size dual-frenquency double-fed, it includes the casing, embeds the PCB base plate in the casing. The PCB substrate is an FR-4 substrate or a 22F substrate with a single-sided copper coating, and the length L1 is 70-90 mm, and the width W1 is 7-10 mm; a pair of 2.4GHz dipoles A, A 'and a pair of 5GHz dipoles B, B' are etched on one surface of the PCB substrate; the 2.4GHz dipole A, A' is respectively connected with the signal wire and the ground wire of the coaxial cable through the signal wire and the ground wire connecting area; the 5GHz dipole B, B' is respectively connected with the signal wire and the ground wire of another coaxial cable through the signal wire and the ground wire connecting area to form the double-frequency double-feed omnidirectional antenna. The utility model discloses not only can realize 2.4GHz/5GHz dual-band signal receiving and dispatching, keep signal omnidirectional radiation, still have the cost of manufacture low, the sexual valence relative altitude, process portably, the advantage of easy volume production.

Description

Small-sized double-frequency double-fed external omnidirectional antenna

Technical Field

The utility model relates to an external omnidirectional antenna indicates an external omnidirectional antenna of small-size dual-frenquency double-feed especially. The utility model belongs to the technical field of the antenna is made.

Background

With the rapid development of communication and electronic technologies, various antennas have been widely used in terminal devices such as smart phones, navigation devices, and wireless routers. The antenna pattern and size applied in the terminal device are mostly designed according to the performance requirement of the terminal device and the use environment of the antenna. More and more terminal device manufacturers require that the antenna meet the communication performance, and at the same time, the unit price of the antenna is further reduced, so that high cost performance is achieved, and the terminal device is more competitive.

At present, the cost of manufacturing most of dual-band double-fed external omnidirectional antennas seen in the market is higher, and the main reasons are as follows: the PCB board with the built-in antenna has higher manufacturing cost. The built-in PCB board of the common double-frequency double-feed external omnidirectional antenna mostly adopts a PTTE substrate board with higher price, and the area is larger, and the size is usually 20x30mm or 50x20mm and the like; and the PCB board is a double-sided copper-clad plate, and the 2.4GHz dipole and the 5GHz dipole which form the external omnidirectional antenna are respectively positioned on the front side and the back side of the PCB board, so that the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a small dual-band dual-feed external omni-directional antenna with low manufacturing cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an external omnidirectional antenna of small-size dual-frenquency double-fed, its characterized in that: the PCB comprises a shell and a PCB substrate which is arranged in the shell;

the PCB substrate is an FR-4 substrate or 22F substrate with a single-sided copper-clad layer, and the length L1 is 70-90 mm, and the width W1 is 7-10 mm;

a pair of 2.4GHz dipoles A, A 'and a pair of 5GHz dipoles B, B' are formed on one surface of the PCB substrate in an etching mode;

the 2.4GHz dipoles A, A' are respectively connected with a signal wire and a ground wire of the coaxial cable in a welding manner; and the 5GHz dipole B, B' is respectively connected with a signal wire and a ground wire of another coaxial cable in a welding way.

In the preferred embodiment of the present invention, the 2.4GHz dipole a is U-shaped, and the 2.4GHz dipole a' is inverted L-shaped; the line width Wa of the 2.4GHz dipoles A and A ' is 0.8-2.5 mm, the distance Sa between the 2.4GHz dipoles A and A ' is 0.5-2 mm, and the total length La of the 2.4GHz dipoles A and A ' is 40-50 mm.

In the preferred embodiment of the present invention, the 5GHz dipoles B and B 'are both L-shaped, and the 5GHz dipoles B and B' are disposed opposite to each other; the line width Wb of the 5GHz dipoles B and B ' is 0.8-2.5 mm, the distance Sb between the 5GHz dipoles B and B ' is 0.5-2 mm, and the total length Lb of the 5GHz dipoles B and B ' is 15-25 mm.

The utility model discloses not only can realize 2.4GHz/5GHz dual-band signal receiving and dispatching, and keep signal omnidirectional radiation, still have the cost of manufacture low, sexual valence relative altitude, processing portably, the advantage of easy volume production.

Drawings

Fig. 1 is the utility model discloses external omnidirectional antenna structure sketch map of small-size dual-frenquency double-fed.

Fig. 2 is a schematic diagram of the connection between the small dual-band dual-feed external omnidirectional antenna and a coaxial cable.

Fig. 3 is a signal radiation diagram of the small-sized dual-band double-fed external omnidirectional antenna 2.4GHz antenna.

Fig. 4 is a signal radiation diagram of the small-sized dual-band double-fed external omnidirectional antenna 5GHz antenna.

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 considered as limitations of 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 fig. 2, the utility model discloses a small-size dual-band double-fed external omnidirectional antenna includes casing, the built-in PCB base plate 1 in the casing.

The PCB substrate 1 is an FR-4 substrate or a 22F substrate with one side coated with copper, and the length L1 is 70-90 mm, and the width W1 is 7-10 mm.

A pair of 2.4GHz dipoles A, A ', a pair of 5GHz dipoles B, B', a pair of 2.4GHz signal line connection regions 2, a pair of 2.4GHz ground line connection regions 3, a pair of 5GH signal line connection regions 4 and a pair of 5GH ground line connection regions 5 are formed on one surface of the PCB substrate by etching.

As shown in the figure, the 2.4GHz dipole a is U-shaped, and the 2.4GHz dipole a' is inverted L-shaped; the line width Wa of the 2.4GHz dipoles A and A ' is 0.8-2.5 mm, the distance Sa between the 2.4GHz dipoles A and A ' is 0.5-2 mm, and the total length La of the 2.4GHz dipoles A and A ' is 40-50 mm.

The 5GHz dipoles B and B 'are L-shaped, and the 5GHz dipoles B and B' are arranged oppositely; the line width Wb of the 5GHz dipoles B and B ' is 0.8-2.5 mm, the distance Sb between the 5GHz dipoles B and B ' is 0.5-2 mm, and the total length Lb of the 5GHz dipoles B and B ' is 15-25 mm.

The utility model relates to a dual-frequency double-fed antenna, so as shown in figure 2, still corrode on PCB base plate 1 and be formed with 2.4GHz signal line connection area 2 and 2.4GHz ground wire connection area 3, the signal line tip among the coaxial cable 4 welds 2 places in PCB base plate 2.4GHz signal line connection area, the ground wire tip among the 2.4GHz coaxial cable 4 welds 3 places in PCB base plate 2.4GHz ground wire connection area; similarly, a 5GHz signal line connection area 5 and a 5GHz ground line connection area 6 are also formed on the PCB substrate 1 by etching, the end of a signal line in another coaxial cable 7 is welded at the 5GHz signal line connection area 5, and the end of a ground line in the coaxial cable 7 is welded at the 5GHz ground line connection area 6, so as to form the small dual-frequency dual-feed external omnidirectional antenna.

The test proves that the utility model can realize the receiving and sending of 2.4GHz and 5GHz dual-band signals; and the 2.4GHz Gain reaches 2.45dBi, the signal keeps all-around omnidirectional radiation (as shown in fig. 3), the 5GHz Gain reaches 3.85dBi, and the signal keeps all-around omnidirectional radiation (as shown in fig. 4).

The utility model discloses can be built-in the casing, then, fix on terminal equipment through screw or universal steering spindle or welded mode, also can be as shown in fig. 1, set up a card end 8 in the bottom of casing, the utility model discloses a card is held 8 cards and is fixed on terminal equipment.

The utility model has the advantages that:

1. the manufacturing cost is low.

Because the utility model discloses a single face covers FR-4 substrate or 22F substrate PCB board of copper, and the area of PCB board is less, only is half of traditional double-frenquency double-fed omnidirectional antenna PCB face area, so, the utility model discloses the cost of manufacture is low.

2. The cost performance is high.

The utility model discloses not only the cost of manufacture is low, but also can realize 2.4GHz/5GHz dual-band signal receiving and dispatching, keeps signal omnidirectional radiation, satisfies antenna communication performance's requirement, so, the utility model discloses the sexual valence relative altitude.

3. Because the utility model discloses a single face covers copper's PCB board, 2.4GHz dipole A, A ', 5GHz dipole B, B ', 2.4GHz signal line, ground wire connection area, 5GH signal line, ground wire connection area are all on the same side of PCB board, and the single face carries out copper foil circuit processing, so, and processing is simple and convenient, easily the volume production.

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 skilled 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; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides an external omnidirectional antenna of small-size dual-frenquency double-fed, its characterized in that: the PCB comprises a shell and a PCB substrate which is arranged in the shell;

2. The small-sized dual-band double-fed external omnidirectional antenna of claim 1, wherein: the 2.4GHz dipole A is U-shaped, and the 2.4GHz dipole A' is inverted L-shaped;

the line width Wa of the 2.4GHz dipoles A and A ' is 0.8-2.5 mm, the distance Sa between the 2.4GHz dipoles A and A ' is 0.5-2 mm, and the total length La of the 2.4GHz dipoles A and A ' is 40-50 mm.

3. The small-sized dual-band double-fed external omnidirectional antenna of claim 2, wherein: the 5GHz dipoles B and B 'are L-shaped, and the 5GHz dipoles B and B' are arranged oppositely;

the line width Wb of the 5GHz dipoles B and B ' is 0.8-2.5 mm, the distance Sb between the 5GHz dipoles B and B ' is 0.5-2 mm, and the total length Lb of the 5GHz dipoles B and B ' is 15-25 mm.

4. The small-sized dual-band double-fed external omnidirectional antenna of claim 3, wherein: and a clamping end connected with the terminal equipment is arranged at the bottom of the shell.