TWM643279U - ANTENNA STRUCTURE AND WIRELESS MODULE FOR 5GHz BANDWIDTH - Google Patents

Abstract

A present application is related to an antenna structure and a wireless module for 5GHz bandwidth. The antenna structure having a flag-shaped radiator, a connecting portion, a feeding end and a ground wire. The flag-shaped radiator has a first side and a second side that are configured vertically. One end of the connecting portion is connected to the first side of the flag-shaped radiator and the other end of the connecting portion is connected to the feeding end. A broken-line extension portion is extended and formed between the first side and the second side of the flag-shaped radiator. Therefore, a uniform radiation pattern is formed by the flag-shaped radiator, and the purpose of obtaining better bandwidth and gain is achieved.

Description

Antenna structure and wireless module suitable for 5GHz bandwidth

The present invention relates to an antenna structure and a module, especially an antenna structure and a wireless module suitable for 5GHz bandwidth.

With the rapid development of wireless communication technology and the improvement of consumer demand, products with wireless communication functions are also increasing. Since the wireless communication equipment uses radio waves for communication transmission and is not affected by physical lines, it can be carried in various environments for communication.

However, the communication capability of wireless communication equipment is affected by the transmission angle of the antenna, and existing antennas are difficult to meet the requirements of multi-directional transmission angles, resulting in poor reception of wireless communication equipment in special scenarios or directions. Therefore, providing an antenna with multi-directional transmission angles is one of the problems that need to be solved urgently in this field.

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

One of the main technical means adopted in order to achieve the above-mentioned purpose is to make the above-mentioned antenna structure suitable for 5GHz bandwidth include: A flag-shaped radiator has a first side and a second side. The first side and the second side are vertically arranged adjacent to each other. The first side and the second side of the flag-shaped radiator are extended to form a step-like extension section; a connecting portion has two opposite ends, one of which is connected to the first side of the flag-shaped radiator; a feed-in end is connected to the other end of the connecting portion.

Another main technical means adopted in order to achieve the above-mentioned purpose is to make the above-mentioned antenna module include: a substrate; a first antenna structure, which is the above-mentioned antenna structure suitable for the 5GHz bandwidth; a second antenna structure, which is the above-mentioned antenna structure suitable for the 5GHz bandwidth; wherein, the first antenna structure and the second antenna structure are separately arranged on the substrate, and the first antenna structure and the second antenna structure are arranged on a mirror surface.

According to the above structure, the present invention has the flag-shaped radiator, and the step-like extension is formed by extending between the first side and the second side of the flag-shaped radiator. Through the special design of this antenna configuration, a uniform radiation pattern can be realized, and the purpose of having better bandwidth and gain can be achieved.

1: The first antenna structure

1': the second antenna structure

2: Substrate

10, 10': flag radiator

11: First side

12: Second side

13: Third side

14: Fourth side

15: fifth side

16: Sixth side

20: Connecting part

30: Feed-in terminal

40: Ground wire

41: first end

42: second end

a1: first angle

a2: second angle

M1, M2, M3, M4, A, B, C: frequency band

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

FIG. 2 is a Smith chart of the antenna structure suitable for 5GHz bandwidth according to the first embodiment of the present invention.

FIG. 3 is a graph showing the variation of reflection coefficient loss of the antenna structure applicable to 5 GHz bandwidth according to the first embodiment of the present invention.

FIG. 4 is a schematic diagram of the radiation pattern of the antenna structure applicable to a 5GHz bandwidth according to the first embodiment of the present invention.

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

Regarding the first preferred embodiment of the present invention, it is an antenna structure suitable for 5GHz bandwidth, please refer to FIG. In this embodiment, the flag-shaped radiator 10 is in the shape of a flag, and the connecting portion 20 has two opposite ends, one of which is connected to the flag-shaped radiator 10 , and the other end is connected to the feeding end 30 , and the connecting portion 20 is located between the flag-shaped radiator 10 and the feeding end 30 . The feed-in terminal 30 is electrically connected to a peripheral circuit (not shown) for receiving antenna signals from the peripheral circuit. One end of the ground wire 40 is connected to the connecting portion 20 , and the other end of the ground wire 40 is connected to the ground of the peripheral circuit. In this way, the new antenna structure suitable for 5GHz bandwidth uses the feed-in terminal 30 to receive the antenna signal from the peripheral circuit, and transmits the antenna signal from the feed-in terminal 30 to the flag-shaped radiator 10 through the connecting portion 20, and the flag-shaped radiator 10 responds to the received antenna signal and radiates and transmits the antenna signal.

In this embodiment, the flag-shaped 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 arranged vertically. In this embodiment, the first side 11 of the flag-shaped radiator 10 is located on a vertical axis, and the second side 12 of the flag-shaped radiator 10 is located on a horizontal axis. The hem of the can be further extended to form a step-like extension, and the first side 11 is connected to the connecting portion 20 .

Further, the step-like extension of the flag-shaped radiator 10 can be formed by a plurality of sides. In this embodiment, the step-like extension of the flag-like radiator 10 includes a third side 13, a first Four sides 14 , a fifth side 15 and a sixth side 16 ; 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, and 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 a hypotenuse, 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 a hypotenuse, and forms a second angle a2 between the sixth side 16 and the connecting portion 20.

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

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

Therefore, the antenna structure suitable for 5 GHz bandwidth of this embodiment forms a flag-shaped radiator 10 whose width decreases from the first side 11 to the second side 12 through the first side 11 to the sixth side 16 . At the same time, because the flag-shaped radiator 10 of this embodiment is flag-shaped and has a large radiation area, it can form a uniform radiation pattern, and can communicate effectively at different angles. In addition, it has a larger communication bandwidth and gain, so as to achieve a uniform radiation pattern, and has a better bandwidth and gain.

Further, the ground wire 40 can define a first end 41 and a second end 42. The first end 41 of the ground wire 40 is connected to the connecting portion 20 and parallel to the second side 12 of the flag radiator 10. The second end 42 of the ground wire 40 is connected to the first end 41 and is perpendicular to the first end 41. In this embodiment, the second end 42 of the ground wire 40 is formed by extending and bending through the first end 41. Therefore, in this embodiment, the ground wire 40 is in an L-shape, and is located at the connecting portion 20 and the surrounding between side circuits. Thereby, the ground wire 40 can make the antenna structure suitable for 5 GHz bandwidth of this embodiment have an antenna impedance of 50 ohms, effectively reducing the signal loss caused by impedance mismatch.

In this embodiment, the antenna structure applicable to the 5 GHz bandwidth of this embodiment can be realized by a planar antenna. Further, the flag radiator 10 , the connecting portion 20 , the feeding end 30 and the ground wire 40 are in the shape of a flat plate.

The new antenna structure suitable for 5GHz bandwidth has a flag-shaped radiator 10, which can transmit signals with a large radiation area, so it can form a uniform radiation pattern. In addition, it has a larger communication bandwidth and gain, and has antenna impedance matching the system, so it can achieve a uniform radiation pattern, and has better bandwidth and gain.

Please refer to Figure 2. Figure 2 is the Smith chart of the antenna structure of the present invention, which is suitable for 5GHz bandwidth, measured in different frequency bands. Among them, M1 is the measurement result of 5.1GHz, M2 is the measurement result of 5.2GHz, M3 is the measurement result of 5.7GHz, and M4 is the measurement result of 5.9GHz. It can be seen from the figure that the new antenna structure suitable for 5GHz bandwidth can have impedance close to the center point of 50 ohms in the frequency band from 5.1GHz to 5.9GHz, effectively reducing the signal loss caused by impedance mismatch.

Please refer to Figure 3. Figure 3 is a schematic diagram of the reflection coefficient loss variation of the antenna structure suitable for 5GHz bandwidth of the present invention in different frequency bands, where M1 is the measurement result of 5.1GHz, M2 is the measurement result of 5.2GHz, M3 is the measurement result of 5.7GHz, and M4 is the measurement result of 5.9GHz. It can be seen from the figure that the new antenna structure suitable for 5GHz bandwidth has a reflection coefficient loss of less than -10dB in the frequency band from 5.1GHz to 5.9GHz, that is, the reflected electromagnetic wave has less energy loss.

Please refer to Figure 4. Figure 4 shows the radiation pattern of the new antenna structure suitable for 5GHz bandwidth on the ZY plane in different frequency bands, where A is the measurement result at 5.1GHz, B is the measurement result at 5.5GHz, and C is the measurement result at 5.9GHz. As can be seen from the figure, the new model is suitable for 5GHz bandwidth The antenna structure has a uniform radiation pattern in the A, B, and C frequency bands, and can communicate effectively at different angles.

Regarding a second preferred embodiment of the present invention, its main technical content is substantially the same as that of the aforementioned first preferred embodiment, but a wireless module suitable for a 5GHz bandwidth is further provided in this preferred embodiment. Please refer to FIG. configure. Since the first antenna structure 1 and the second antenna structure 1' of the present invention have the flag-shaped radiators 10, 10' and are configured as mirror images, the directions of the flag-shaped radiators 10, 10' of the first antenna structure 1 and the second antenna structure 1' are opposite and far away from each other, the first antenna structure 1 and the second antenna structure 1' can be properly isolated by this configuration, so that the antenna signals of each other do not affect each other and form complementary radiation patterns. That is to say, the wireless module suitable for 5GHz bandwidth of the present invention can achieve the purpose of uniform radiation pattern with 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, it has better bandwidth and gain.

To sum up, since the new antenna structure suitable for 5GHz bandwidth has a flag-shaped radiator, it can radiate and transmit signals with a larger radiation area, so it can form a uniform radiation pattern. In addition, it has a larger communication bandwidth and gain, and has an antenna impedance that matches the system, so it can achieve a uniform radiation pattern, and has better bandwidth and gain.

10: Flag Radiator

11: First side

12: Second side

13: Third side

14: Fourth side

15: fifth side

16: Sixth side

20: Connecting part

30: Feed-in terminal

40: Ground wire

41: first end

42: second end

a1: first angle

a2: second angle

Claims (9)

An antenna structure suitable for 5GHz bandwidth, comprising: A flag-shaped radiator has a first side and a second side, the first side and the second side are vertically arranged adjacent to each other, and a step-like extension is formed between the first side and the second side of the flag-shaped radiator; a connecting portion having two opposite ends, one of which is connected to the first side of the flag-shaped radiator; A feeding end is connected with the other end of the connecting part. The antenna structure suitable for 5GHz bandwidth as described in Claim 1, wherein the step-like extension section 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 connecting portion, the fourth side is horizontally arranged 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. The antenna structure suitable for 5GHz bandwidth as claimed in claim 2, wherein the fifth side has a first angle, and the sixth side has a second angle. The antenna structure suitable for 5GHz bandwidth as claimed in claim 3, wherein the first angle is greater than 0° and less than 90°, and the second angle is greater than 90° and less than 180°. The antenna structure suitable for 5GHz bandwidth as described in 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. According to the antenna structure suitable for 5GHz bandwidth as described in Claim 1, the antenna structure suitable for 5GHz bandwidth includes a ground wire connected to the connection part. The antenna structure suitable for 5GHz bandwidth as claimed in claim 6, wherein the grounding wire is L-shaped. The antenna structure suitable for 5GHz bandwidth as described in claim 7, wherein the ground wire has a first end and a second end, the first end is connected to the connecting portion, and the second end is perpendicular to the first end and connected to the first end. A wireless module suitable for 5GHz bandwidth, which includes: a substrate; A first antenna structure, including the antenna structure suitable for 5GHz bandwidth as described in claim 1; and A second antenna structure, including the antenna structure suitable for 5GHz bandwidth as described in claim 1; Wherein, the first antenna structure and the second antenna structure are separately disposed on the substrate, and the first antenna structure and the second antenna structure are arranged as mirror surfaces.