CN219246926U

CN219246926U - Antenna structure and wireless module suitable for 5GHz bandwidth

Info

Publication number: CN219246926U
Application number: CN202320141108.7U
Authority: CN
Inventors: 罗世杰; 任宗辉
Original assignee: Yubao Technology Co ltd
Current assignee: Yubao Technology Co ltd
Priority date: 2023-01-18
Filing date: 2023-01-18
Publication date: 2023-06-23
Anticipated expiration: 2033-01-18

Abstract

The application provides an antenna structure and a wireless module suitable for a 5GHz bandwidth, which mainly comprise a flag-shaped radiator, a connecting part, a feed-in end and a grounding wire, wherein the flag-shaped radiator is provided with a first side and a second side which are vertically arranged, the first side of the flag-shaped radiator is connected with the end of the connecting part, and the opposite end of the connecting part is connected with the feed-in end; wherein, the first side and the second side of the flag-shaped radiator are extended to form a stepped extension section. Therefore, the flag-shaped radiator can generate a uniform radiation field type, and the purposes of better bandwidth and gain are achieved.

Description

Antenna structure and wireless module suitable for 5GHz bandwidth

Technical Field

The present disclosure relates to an antenna structure and a wireless module, and more particularly to an antenna structure and a wireless module suitable for a 5GHz bandwidth.

Background

With the rapid development of wireless communication technology and the increase of consumer demand, products with wireless communication function are also increasing. Because the wireless communication equipment is communicated and transmitted by electric waves and is not influenced by an entity line, the wireless communication equipment can be carried to various environments for communication.

However, the communication capability of the wireless communication device is affected by the transmission angle of the antenna, and the conventional antenna is difficult to meet the requirement of the multi-directional transmission angle, so that the wireless communication device is in a special scene or has poor reception in azimuth, and therefore, providing an antenna with the multi-directional transmission angle is one of the problems to be solved in the field.

Disclosure of Invention

In view of the above problems in the prior art, it is a primary object of the present application to provide an antenna structure and a wireless module suitable for a 5GHz bandwidth, which can generate a uniform radiation pattern through the design of the antenna configuration, and has a better bandwidth and gain.

The main technical means adopted to achieve the above purpose is to make the antenna structure suitable for the 5GHz bandwidth comprise:

the flag-shaped radiator is provided with a first side and a second side, the first side and the second side are adjacent to each other and are vertically arranged, and a stepped extension section is formed between the first side and the second side of the flag-shaped radiator through extension;

a connection part having opposite ends, one of which is connected to the first side of the flag radiator;

the feed-in end is connected with the other end of the connecting part.

Another main technical means adopted to achieve the above object is to make the above antenna module include:

a substrate;

the first antenna structure is the antenna structure applicable to the 5GHz bandwidth;

the second antenna structure is the antenna structure applicable to the 5GHz bandwidth;

the first antenna structure and the second antenna structure are arranged on the substrate separately, and the first antenna structure and the second antenna structure are arranged in a mirror surface.

According to the above structure, the flag-shaped radiator is arranged, the first side and the second side of the flag-shaped radiator are extended to form the step-shaped extension section, and the purpose of having better bandwidth and gain can be achieved by the special design of the antenna configuration.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a schematic diagram of an antenna structure suitable for a 5GHz bandwidth according to a first embodiment of the present application.

Fig. 2 is a smith chart of an antenna structure suitable for a 5GHz bandwidth according to a first embodiment of the present application.

Fig. 3 is a graph showing reflection coefficient loss variation of an antenna structure suitable for a 5GHz bandwidth according to a first embodiment of the present application.

Fig. 4 is a schematic diagram of a radiation pattern of an antenna structure suitable for a 5GHz bandwidth according to a first embodiment of the present application.

Fig. 5 is a schematic diagram of a wireless module suitable for a 5GHz bandwidth according to a second embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Referring to fig. 1, a first preferred embodiment of the present application is an antenna structure suitable for a 5GHz bandwidth, which includes a flag radiator 10, a connection portion 20, a feed-in terminal 30, and a ground line 40. In this embodiment, the flag radiator 10 is flag-shaped, the connection portion 20 has two opposite ends, one end of which is connected to the flag radiator 10, the other end of which is connected to the feed-in end 30, and the connection portion 20 is located between the flag radiator 10 and the feed-in end 30. The feed-in terminal 30 is electrically connected to a peripheral circuit (not shown) for receiving an antenna signal from the peripheral circuit. One end of the ground wire 40 is connected to the connection portion 20, and the other end of the ground wire 40 is connected to the ground of the peripheral circuit. According to the antenna structure suitable for the 5GHz bandwidth, the feed-in end 30 receives the antenna signal from the peripheral circuit, the antenna signal is transmitted to the flag-shaped radiator 10 from the feed-in end 30 through the connecting portion 20, and the flag-shaped radiator 10 responds to the received antenna signal to radiate and send the antenna signal.

In this embodiment, the flag radiator 10 has a first side 11 and a second side 12, the first side 11 and the second side 12 are adjacent to each other and are vertically disposed, in this embodiment, the first side 11 of the flag radiator 10 is located in a vertical axis direction, the second side 12 of the flag radiator 10 is located in a horizontal axis direction, and the flag-shaped lower hem is formed between the first side 11 and the second side 12, the lower hem of the first side 11 and the lower hem of the second side 12 may further be extended to form a stepped extension section, and the first side 11 is connected with the connecting portion 20.

Further, the stepped extension of the flag radiator 10 may be formed by a plurality of sides, and in this embodiment, the stepped extension of the flag radiator 10 includes a third side 13, a fourth side 14, a fifth side 15 and a sixth side 16; wherein one end of the third side 13 is adjacent to the second side 12 and parallel to the first side 11.

Further, one end of the fifth side 15 is connected to the other end of the third side 13, the other end of the fifth side 15 is connected to one end of the fourth side 14, in this embodiment, the fourth side 14 is parallel to the second side 12, and the fifth side 15 is beveled, and a first angle a1 is formed between the fifth side 15 and the fourth side 14.

One end of the sixth side 16 is connected to one end of the connecting portion 20, and the other end of the sixth side 16 is connected to the other end of the fourth side 14, in this embodiment, the sixth side 16 is beveled, and a second angle a2 is formed between the sixth side 16 and the connecting portion 20.

Further, in this embodiment, the length of the first side 11 is greater than the length of the third side 13, the length of the second side 12 is greater than the length of the fourth side 14, and the length of the sixth side 16 is greater than the length of the fifth side 15.

Further, in this embodiment, the first angle a1 is greater than 0 degrees and smaller than 90 degrees, the second angle a2 is greater than 90 degrees and smaller than 180 degrees, and the first angle a1 is smaller than the second angle a2.

Therefore, in the antenna structure suitable for the 5GHz bandwidth of the present embodiment, the flag radiator 10 with the width decreasing from the first side 11 to the second side 12 is formed through the first side 11 to the sixth side 16. Meanwhile, the flag radiator 10 of the present embodiment is flag-shaped and has a larger radiation area, so that a uniform radiation pattern can be formed, communication can be effectively performed at different angles, and in addition, the flag radiator has a larger communication bandwidth and gain, so that the purposes of realizing a uniform radiation pattern and having a better bandwidth and gain are achieved.

Further, the ground wire 40 may define a first end 41 and a second end 42, the first end 41 of the ground wire 40 is connected to the connection portion 20 and parallel to the second side 12 of the flag radiator 10, and the second end 42 of the ground wire 40 is connected to the first end 41 and perpendicular to the first end 41, and in this embodiment, the second end 42 of the ground wire 40 is formed by extending and bending the first end 41. Therefore, in the present embodiment, the ground line 40 is L-shaped and is located between the connection portion 20 and the peripheral circuit. The grounding wire 40 can make the antenna structure suitable for the 5GHz bandwidth of the present embodiment have an antenna impedance of 50 ohms, so as to effectively reduce signal loss caused by impedance mismatch.

In this embodiment, the antenna structure applicable to the 5GHz bandwidth of this embodiment may be implemented as a planar antenna. Further, the flag radiator 10, the connection portion 20, the feed-in end 30, and the ground wire 40 are flat plate-shaped.

The antenna structure suitable for the 5GHz bandwidth has the flag-shaped radiator 10, so that the signal can be radiated and transmitted by a larger radiation area, a uniform radiation pattern can be formed, and the antenna structure has larger communication bandwidth and gain and antenna impedance matched with a system, so that the uniform radiation pattern can be realized, and the purposes of better bandwidth and gain are achieved.

Referring to fig. 2, fig. 2 is a smith chart of the present application, which is obtained by measuring an antenna structure with a bandwidth of 5GHz in different frequency bands, wherein M1 is a measurement result of 5.1GHz, M2 is a measurement result of 5.2GHz, M3 is a measurement result of 5.7GHz, and M4 is a measurement result of 5.9 GHz. As can be seen from the figure, the antenna structure suitable for the 5GHz bandwidth has the impedance close to the center point of 50 ohms in the frequency range from 5.1GHz to 5.9GHz, and effectively reduces signal loss caused by impedance mismatch.

Referring to fig. 3, fig. 3 is a schematic diagram showing reflection coefficient loss variation of the antenna structure suitable for 5GHz bandwidth in different frequency bands, where M1 is a measurement result of 5.1GHz, M2 is a measurement result of 5.2GHz, M3 is a measurement result of 5.7GHz, and M4 is a measurement result of 5.9 GHz. As can be seen from the figure, the reflection coefficient loss of the antenna structure suitable for the 5GHz bandwidth in the frequency band from 5.1GHz to 5.9GHz is below-10 dB, namely the reflected electromagnetic wave has less energy loss.

Referring to fig. 4, fig. 4 shows radiation patterns of the antenna structure suitable for 5GHz bandwidth in ZY plane under different frequency bands, where a is a measurement result of 5.1GHz, B is a measurement result of 5.5GHz and C is a measurement result of 5.9 GHz. As can be seen from the figure, the antenna structure suitable for the 5GHz bandwidth has uniform radiation patterns in A, B, C frequency bands, and can effectively communicate at different angles.

Regarding the second preferred embodiment of the present application, the main technical content is substantially the same as that of the first preferred embodiment, but in the preferred embodiment, a wireless module suitable for a 5GHz bandwidth is further provided, please refer to fig. 5, the wireless module suitable for a 5GHz bandwidth includes a first antenna structure 1, a second antenna structure 1' and a substrate 2, the first antenna structure 1 and the second antenna structure 1' are respectively configured on the substrate 2, and the first antenna structure 1 and the second antenna structure 1' are configured in mirror images along the same horizontal axis. Since the first antenna structure 1 and the second antenna structure 1' of the present application are provided with the flag radiators 10 and 10' and are arranged in mirror images, the orientations of the flag radiators 10 and 10' of the first antenna structure 1 and the second antenna structure 1' are opposite and distant from each other, and the first antenna structure 1 and the second antenna structure 1' can be arranged so as to be moderately isolated, so that the antenna signals of each other do not affect each other and form a complementary radiation pattern. That is, the wireless module suitable for 5GHz bandwidth of the present application can achieve a uniform radiation pattern by the first antenna structure 1 and the second antenna structure 1', and because the signals of the first antenna structure 1 and the second antenna structure 1' do not interfere with each other, and form a complementary radiation pattern, the wireless module has better bandwidth and gain.

In summary, since the antenna structure suitable for the 5GHz bandwidth of the present application has the flag-shaped radiator, the radiation area can be larger to perform the radiation transmission of the signal, so that a uniform radiation pattern can be formed, and in addition, the antenna structure has a larger communication bandwidth and gain, and has an antenna impedance matched with the system, so that the purposes of realizing a uniform radiation pattern, and having a better bandwidth and gain can be achieved.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative, not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are all the protection of the present application.

Claims

1. An antenna structure for a 5GHz bandwidth, comprising:

the feed-in end is connected with the other end of the connecting part.

2. The antenna structure according to claim 1, wherein the stepped extension includes a third side, a fourth side, a fifth side, and a sixth side, one end of the third side is connected to the second side, one end of the fifth side is connected to the other end of the third side, one end of the sixth side is connected to one end of the connection portion, and the fourth side is horizontally disposed and connected to the fifth side and the other end of the sixth side, and is located between the fifth side and the sixth side.

3. The antenna structure of claim 2, wherein the fifth side has a first angle and the sixth side has a second angle.

4. The antenna structure of claim 3, wherein the first angle is greater than 0 degrees and less than 90 degrees and the second angle is greater than 90 degrees and less than 180 degrees.

5. The antenna structure of claim 2, wherein the length of the first side is greater than the length of the third side, the length of the second side is greater than the length of the fourth side, and the length of the sixth side is greater than the length of the fifth side.

6. The antenna structure for a 5GHz bandwidth of claim 1, wherein the antenna structure for a 5GHz bandwidth comprises a ground line connected to the connection portion.

7. The antenna structure of claim 6, wherein the ground line is L-shaped.

8. The antenna structure of claim 7, wherein the ground line has a first end connected to the connection portion and a second end perpendicular to the first end and connected to the first end.

9. A wireless module adapted for a 5GHz bandwidth, comprising:

a substrate;

a first antenna structure comprising an antenna structure according to claim 1 adapted for a 5GHz bandwidth; and

a second antenna structure comprising an antenna structure according to claim 1 adapted for a 5GHz bandwidth;