Built-in antenna and terminal equipment

Abstract

The utility model provides a built-in antenna and a terminal device, the built-in antenna comprises a first radiation branch knot, a second radiation branch knot, a third radiation branch knot, a feeding point and a grounding point which are connected in sequence, the feeding point is electrically connected with the first radiation branch knot, the grounding point is connected with the second radiation branch knot, and the third radiation branch knot is electrically connected with the feeding point. The first radiation branch knot and the second radiation branch knot are connected to form a slot, the slot comprises a first slot, a second slot and a third slot, and the first slot, the second slot and the third slot are communicated with one another; the third radiation branch knot is perpendicular to the second radiation branch knot, and the second radiation branch knot is perpendicularly connected with the first radiation branch knot. The built-in antenna provided by the utility model not only can obtain a relatively wide width, but also can solve the communication smoothness of terminal equipment, and can effectively improve the anti-interference capability.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication technology field especially relates to a set of built -in antenna and apply the terminal equipment of this built -in antenna. BACKGROUND

[0002] With the continuous development of 5G base station construction, the frequency band supported by the communication terminal is also expanding. Nowadays, mobile phones are commonly used mobile terminal products, and with the continuous development of science and technology, mobile phones inevitably use 5G communication technology, so it is required to increase the number of antennas in the mobile phone, but the space of the mobile phone is limited, and the bandwidth of the antenna is also limited by the space, so the frequency band covered by the antenna is limited, so it is difficult to realize the bandwidth radiation of the antenna.

[0003] Early telephone sets usually use pull rod antennas, which are in an unfolded state when the antenna cap at the top of the antenna is pulled. With the development of science and technology, modern portable terminal smart phones, tablets and Internet of Things are usually equipped with multiple types of antennas to meet the needs of different application scenarios. These antennas are designed to be small in size, light in weight, easy to integrate and high in communication performance. As a key component of wireless communication equipment, the performance of the antenna directly determines the communication quality and signal reception range of the equipment, so the design of the antenna is particularly important. These background technologies show the evolution of telephone sets from early pull rod antennas to modern multiple types.

[0004] However, the existing terminal antenna has poor anti-interference ability and weak communication smoothness. Therefore, it is necessary to provide a built-in antenna and a mobile terminal applying the built-in antenna. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a built-in antenna which not only has a relatively wide width, but also solves the communication smoothness of the terminal equipment and effectively improves the anti-interference ability.

[0006] To solve the above technical problems, the utility model provides a built-in antenna, which comprises first, second and third radiation branches, a feed point and a grounding point connected in sequence, the feed point is electrically connected with the first radiation branch, the grounding point is connected with the second radiation branch, the first radiation branch and the second radiation branch are connected to form a slot, the slot comprises first, second and third slots, the first, second and third slots are interconnected, the third radiation branch is perpendicular to the second radiation branch, and the second radiation branch is perpendicular to the first radiation branch.

[0007] As a further improvement of the utility model, the first, second and third radiation branches are all configured as patch antennas.

[0008] As a further improvement of the utility model, the first radiation branch is in U shape, and the first radiation branch and the second radiation branch are arranged to form a first gap.

[0009] As a further improvement of the utility model, the third radiation branch is arranged perpendicularly to the second radiation branch, and the first radiation branch is formed with a second gap.

[0010] As a further improvement of the utility model, the first gap and the second gap are in communication with each other, and the second gap and the first gap are in communication to form F shape.

[0011] As a further improvement of the utility model, the feeding point is below the grounding point, and the first gap is between the feeding point and the grounding point.

[0012] As a further improvement of the utility model, the end of the third radiation branch is provided with an extension branch, and the extension branch is configured to control the frequency band width of 2400-2500MHz.

[0013] As a further improvement of the utility model, the first radiation branch is configured to control 5150MHz-5850MHz.

[0014] As a further improvement of the utility model, one end of the second radiation branch is connected to the first radiation branch, and the other end of the second radiation branch is connected to the third radiation branch.

[0015] The utility model also aims at providing a terminal device to better apply the above-mentioned built-in antenna.

[0016] To solve the above-mentioned technical problem, the utility model provides a terminal device, which comprises the built-in antenna.

[0017] The utility model provides a built-in antenna and a terminal device, the built-in antenna comprises first radiation branch, second radiation branch and third radiation branch that are connected in sequence, feeding point and grounding point, the feeding point is electrically connected with the first radiation branch, the grounding point is connected with the second radiation branch, the first radiation branch and the second radiation branch are connected to form a slot, the slot comprises first slot, second slot and third slot, and the first slot, the second slot and the third slot are in communication with each other, the third radiation branch is perpendicular to the second radiation branch, and the second radiation branch is connected perpendicularly to the first radiation branch. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 This is a schematic diagram of the built-in antenna of this utility model.

[0019] The labels in the accompanying drawings are explained as follows:

[0020] Feed point 1, grounding point 2, third radiating branch 3, second radiating branch 4, first radiating branch 5. Detailed Implementation

[0021] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed account of the built-in antenna proposed in this utility model and the terminal device using the built-in antenna. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, intended only to facilitate and clarify the explanation of the embodiments of this utility model. Furthermore, the structures shown in the drawings are often part of the actual structure. In particular, different figures may emphasize different aspects and sometimes use different proportions.

[0022] Early telephones typically used telescopic antennas, which were extended by pulling the antenna cap at the top. With technological advancements, modern portable devices such as mobile phones, tablets, and IoT devices are often equipped with multiple types of antennas to meet the needs of different application scenarios. These antenna designs emphasize small size, light weight, ease of integration, and high communication performance. As a key component of wireless communication equipment, the performance of the antenna directly determines the communication quality and signal reception range of the device; therefore, antenna design within terminal devices is particularly important.

[0023] This utility model provides a built-in antenna, which includes a first radiating stub 5, a second radiating stub 4, and a third radiating stub 3, a feed point 1, and a ground point 2 connected in sequence. The feed point 1 is electrically connected to the first radiating stub 5, and the ground point 2 is connected to the second radiating stub 4. The first radiating stub 5 and the second radiating stub 4 are connected to form a slot, which includes a first slot, a second slot, and a third slot, and the first slot, the second slot, and the third slot are interconnected. The third radiating stub 3 is perpendicular to the second radiating stub 4, and the second radiating stub 4 is perpendicularly connected to the first radiating stub 5.

[0024] With this configuration, compared with the prior art, the built-in antenna of this utility model can realize a dual-band WIFI antenna by using this wiring method, and improve the overall anti-interference capability of the built-in antenna, thus enhancing the customer experience.

[0025] Preferably, the first radiating stub 5, the second radiating stub 4, and the third radiating stub 3 are all configured as patch antennas. The first radiating stub 5 is U-shaped, and the first radiating stub 5 and the second radiating stub 4 form a first gap around each other. The third radiating stub 3 is arranged perpendicularly to the second radiating stub 4, and the first radiating stub 5 forms a second gap.

[0026] Preferably, the first gap and the second gap are interconnected, and the second gap and the first gap are interconnected to form an F-shape. Preferably, the feed point 1 is located below the grounding point 2, and the first gap is located between the feed point 1 and the grounding point 2. The end of the third radiating branch 3 is provided with an extension branch, and the extension branch is configured to control a frequency band bandwidth of 2400-2500MHz. The first radiating branch 5 is configured to control 5150MHz-5850MHz. One end of the second radiating branch 4 is connected to the first radiating branch 5, and the other end of the second radiating branch 4 is connected to the third radiating branch.

[0027] In other words, the lengths of the first and second slots within the built-in antenna of this invention control the bandwidth and resonance of the 2400MHz-2500MHz frequency band. Sealing the slots by 1mm will result in a slightly higher resonance, while opening the slots will result in a slightly lower resonance. The main control is over the 5G bandwidth, specifically the 5150MHz-5856MHz frequency band, which is controlled by the resonance generated by the coupling between the first radiating stub 5 and the second radiating stub 4. The first slot stub is particularly sensitive to the 5150MHz frequency band and also controls the depth of the 5G S11. If the third radiating stub 3 is shortened by 1mm, the 2.4G resonance will be too high; similarly, lengthening it by 1mm will result in a too low resonance. Simultaneously, the Smith impedance will change significantly. Adjusting the lengths of each branch and the spacing between them will generate coupling resonance, which will also change accordingly.

[0028] In summary, this utility model provides a built-in antenna and a terminal device. The built-in antenna includes a first radiating stub 5, a second radiating stub 4, and a third radiating stub 3, a feed point 1, and a ground point 2 connected sequentially. The feed point 1 is electrically connected to the first radiating stub 5, and the ground point 2 is connected to the second radiating stub 4. The first radiating stub 5 and the second radiating stub 4 are connected to form a slot, which includes a first slot, a second slot, and a third slot, and these slots are interconnected. The third radiating stub 3 is perpendicular to the second radiating stub 4, and the second radiating stub 4 is perpendicularly connected to the first radiating stub 5. Compared with existing technologies, the built-in antenna of this utility model utilizes IFA coupling to achieve strong anti-interference capability for dual-band WIFI antennas and obtains a relatively wide radiation bandwidth. In other words, the built-in antenna of this utility model not only achieves a wider bandwidth but also solves the communication smoothness problem of the terminal device, effectively improving anti-interference capability.

[0029] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to mutually. In addition, the different parts between embodiments can also be combined with each other, and this utility model does not limit this.

[0030] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An internal antenna, characterized by: The built-in antenna comprises a first radiation branch, a second radiation branch and a third radiation branch connected in sequence, a feeding point and a grounding point, the feeding point is electrically connected with the first radiation branch, the grounding point is connected with the second radiation branch, the first radiation branch and the second radiation branch are connected to form a slot, the slot comprises a first slot, a second slot and a third slot, the first slot, the second slot and the third slot are communicated with each other, the third radiation branch is perpendicular to the second radiation branch, and the second radiation branch is perpendicular to the first radiation branch.

2. The internal antenna of claim 1, wherein: The first radiation branch, the second radiation branch and the third radiation branch are all configured as patch antennas.

3. The internal antenna of claim 2, wherein: The first radiation branch is in a U shape, and the first radiation branch and the second radiation branch surround to form a first gap.

4. The internal antenna of claim 3, wherein: The third radiation branch is arranged perpendicularly to the second radiation branch, and the first radiation branch forms a second gap.

5. The internal antenna of claim 4, wherein: The first gap and the second gap are communicated with each other, and the second gap is communicated with the first gap to form an F shape.

6. The internal antenna of claim 5, wherein: The feeding point is located below the grounding point, and the first gap is located between the feeding point and the grounding point.

7. The internal antenna of claim 6, wherein: An extension branch is arranged at an end of the third radiation branch, and the extension branch is configured to control a frequency band of 2400-2500 MHz.

8. The internal antenna of claim 7, wherein: The first radiation branch is configured to control a frequency band of 5150-5850 MHz.

9. The internal antenna of claim 8, wherein: One end of the second radiation branch is connected with the first radiation branch, and the other end of the second radiation branch is connected with the third radiation branch.

10. A terminal device, comprising: The terminal device comprises the built-in antenna as claimed in any one of claims 1-9.

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