High-gain antenna and terminal equipment

Abstract

The utility model provides a high gain antenna and a terminal device, the high gain antenna comprises a substrate and a radiation antenna attached to the substrate, the radiation antenna is bent and arranged on a first surface and a second surface of the substrate, and the first surface and the second surface are oppositely arranged; a concave groove is formed in the first surface, and the bottom of the concave groove extends to the bent part of the radiating antenna; the radiating antenna is provided with at least one group of gaps, namely a first gap and a second gap, and a radiating part between the group of gaps is attached to the interior of the recessed groove. The high-gain antenna not only can enlarge the radiation area of the whole antenna, but also can improve the radiation gain and the radiation bandwidth through the self-coupling of the radiation antenna on the upper surface and the lower surface of the substrate.

Description

Technical Field

[0001] The utility model relates to the field of communication technologies, and particularly relates to a high-gain antenna and a terminal device. Background Art

[0002] With the continuous development of the construction of 5G base stations, the frequency bands supported by communication terminals are also continuously expanding. Nowadays, tablets are commonly used mobile terminal products. With the continuous development of technology, tablets inevitably use 5G communication technology. This requires an increase in the number of antennas in the tablets. However, the space of the tablets is limited, and the bandwidth of the antennas is also limited by the space. Therefore, the frequency bands covered by the antennas are limited, making it difficult to achieve high gain and bandwidth radiation of the antennas.

[0003] In view of this, it is indeed necessary for the utility model to propose a novel high-gain antenna and a terminal device applying the antenna to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-gain antenna, which can not only increase the overall radiation area of the antenna, but also improve the radiation gain and radiation bandwidth through the self-coupling of the radiation antenna on the upper and lower surfaces of the substrate.

[0005] To solve the above technical problems, the utility model provides a high-gain antenna, which includes a substrate and a radiation antenna attached to the substrate. The radiation antenna is bent and disposed on the first surface and the second surface of the substrate, and the first surface and the second surface are oppositely arranged; a recessed groove is formed on the first surface, and the bottom of the recessed groove extends to the bent portion of the radiation antenna; at least one group of slits is formed on the radiation antenna, and the radiation part between the group of slits is attached to the recessed groove.

[0006] As a further improvement of the utility model, the group of slits includes at least a first slit and a second slit, and the radiation antenna is in a sheet shape and is bent and attached to the substrate to form a C shape.

[0007] As a further improvement of the utility model, the first slit and the second slit are arranged in parallel, and a third slit is formed on the radiation part between the first slit and the second slit, and the third slit is perpendicular to the first slit and the second slit.

[0008] As a further improvement of the utility model, a first grounding portion and a second grounding portion are respectively arranged on two sides of the recessed groove, and the first grounding portion and the second grounding portion are symmetric about the recessed groove.

[0009] As a further improvement of the present utility model, both the first grounding portion and the second grounding portion are rectangular, and both the first grounding portion and the second grounding portion are configured as foam.

[0010] As a further improvement of the present utility model, the high-gain antenna further includes a feeding point and a grounding point, and the feeding point and the grounding point are respectively arranged on both sides of the third slit.

[0011] As a further improvement of the present utility model, the radiation antenna attached to the second surface of the substrate is provided with a fourth slit and a fifth slit, and both the fourth slit and the fifth slit are parallel to the first slit and the second slit.

[0012] As a further improvement of the present utility model, the distance between the fourth slit and the fifth slit is greater than the distance between the first slit and the second slit.

[0013] As a further improvement of the present utility model, the radiation antenna placed on the substrate is configured such that the radiation antenna is attached or laser-engraved or printed on the substrate.

[0014] The purpose of the present utility model is to provide a terminal device to better apply the above-mentioned high-gain antenna.

[0015] To solve the above technical problems, the present utility model provides a terminal device, and the terminal device includes the aforementioned high-gain antenna.

[0016] The present utility model provides a high-gain antenna and a terminal device. The high-gain antenna includes a substrate and a radiation antenna attached to the substrate. The radiation antenna is bent and placed on the first surface and the second surface of the substrate, and the first surface and the second surface are arranged opposite to each other; a concave groove is formed on the first surface, and the bottom of the concave groove extends to the bending portion of the radiation antenna; the radiation antenna is provided with at least one set of slits, a first slit and a second slit, and the radiation portion between the set of slits is attached to the concave groove. The high-gain antenna of the present utility model can not only increase the overall radiation area of the antenna, but also improve the radiation gain and radiation bandwidth through the self-coupling of the radiation antenna on the upper and lower surfaces of the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the high-gain antenna of the present utility model.

[0018] Figure 2 It is Figure 1 a schematic structural diagram of the substrate in

[0019] Figure 3 It is Figure 1 a three-dimensional schematic structural diagram of the radiation antenna in

[0020] Figure 4 is Figure 3 the planar unfolded view of the middle radiation antenna.

[0021] Figure 5 is the simulation diagram of the return loss of the high-gain antenna of the present utility model.

[0022] Figure 6 is the overall resonance simulation schematic diagram of the high-gain antenna of the present utility model.

[0023] Figure 7 is the 2D radiation schematic diagram of the high-gain antenna of the present utility model in the 2450 MHz frequency band.

[0024] Figure 8 is the 2D radiation schematic diagram of the high-gain antenna of the present utility model in the 5725 MHz frequency band.

[0025] Figure 9 is the 3D radiation schematic diagram of the high-gain antenna of the present utility model in the 2450 MHz frequency band.

[0026] Figure 10 is the 3D radiation schematic diagram of the high-gain antenna of the present utility model in the 5725 MHz frequency band.

[0027] Among them, the descriptions of each reference numeral are as follows:

[0028] substrate 10, first surface 11, second surface 12, recessed groove 13, radiation antenna 20, first slit 21, second slit 22, third slit 23, fourth slit 24, fifth slit 25, first grounding portion 26, second grounding portion 27. Specific Embodiments

[0029] The following further elaborates on the high-gain antenna and the terminal device proposed by the present utility model in conjunction with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, only for conveniently and clearly assisting in explaining the purpose of the embodiments of the present utility model. In addition, the structures shown in the accompanying drawings are often part of the actual structures. In particular, the accompanying drawings need to show different focuses and sometimes use different scales.

[0030] Due to the spatial limitations of the internal environment of traditional in-terminal antennas, they are generally located on the housing of the terminal device, thus being restricted by the shape of the terminal housing. With the continuous development of 5G base station construction, the frequency bands supported by communication terminals are also continuously expanding. Nowadays, tablets are commonly used mobile terminal products. With the continuous development of technology, tablets inevitably use 5G communication technology. This requires an increase in the number of antennas in the tablet. However, the space in the tablet is limited, and the bandwidth of the antennas is also restricted by the space. Therefore, the frequency bands covered by the antennas are limited, making it difficult to achieve high gain and bandwidth radiation of the antennas. In view of this, the present utility model provides a high-gain antenna and a terminal device applying the high-gain antenna.

[0031] Combined with Figure 1-4 As shown, the present utility model provides a high-gain antenna. The high-gain antenna includes a substrate 10 and a radiation antenna 20 attached to the substrate 10. The radiation antenna 20 is bent and placed on the first surface 11 and the second surface 12 of the substrate 10, and the first surface 11 and the second surface 12 are oppositely arranged; a recessed groove 13 is formed on the first surface 11, and the bottom of the recessed groove 13 extends to the bending position of the radiation antenna 20; the radiation antenna 20 is provided with at least one set of slits, and the radiation part between the set of slits is attached to the recessed groove 13.

[0032] The high-gain antenna of the present utility model can not only increase the overall radiation area of the antenna, but also improve the radiation gain and radiation bandwidth through the self-coupling of the radiation antenna 20 on the upper and lower surfaces of the substrate 10.

[0033] Furthermore, the at least one set of slits includes at least a first slit and a second slit. The radiation antenna 20 is in a sheet shape and is bent and attached to the substrate 10 to form a C shape. The first slit 21 and the second slit 22 are arranged in parallel with each other. A third slit 23 is provided in the radiation part between the first slit 21 and the second slit 22, and the third slit 23 is perpendicular to the first slit 21 and the second slit 22. With such a setting, the overall radiation area of the antenna can be increased, that is, the radiation area of the antenna is effectively increased. The C shape formed by bending means that the radiation antenna 20 is in a C-shaped structure when viewed from the side, and the overall three-dimensional shape is a U-shaped structure. The two radiation surfaces formed by bending and oppositely arranged are the radiators attached to the opposite surfaces of the substrate 10, and self-coupling is formed between them, which can broaden the radiation bandwidth and radiation gain.

[0034] Further, a first grounding portion 26 and a second grounding portion 27 are respectively arranged on two sides of the concave groove 13, and the first grounding portion 26 and the second grounding portion 27 are symmetrical about the concave groove 13. Both the first grounding portion 26 and the second grounding portion 27 are rectangular, and both the first grounding portion 26 and the second grounding portion 27 are configured as foam. The high-gain antenna further includes a feeding point and a grounding point, and the feeding point and the grounding point are respectively arranged on two sides of the third slit 23. The radiation antenna 20 attached to the second surface 12 of the substrate 10 is provided with a fourth slit 24 and a fifth slit 25, and both the fourth slit 24 and the fifth slit 25 are parallel to the first slit 21 and the second slit 22. The distance between the fourth slit 24 and the fifth slit 25 is greater than the distance between the first slit 21 and the second slit 22. In the present utility model, the radiation antenna is disposed on the substrate and configured to be attached, laser-engraved or printed on the substrate. Preferably, the radiation antenna 20 is configured as an FPC antenna.

[0035] In the present utility model, after the radiation antenna 20 is unfolded, that is, the width of the entire FPC antenna is 31.29 mm ± 0.15, and the length of the entire FPC antenna is 44.90 mm ± 0.15; within the above range, the slitting width ranges of the first slit 21 and the second slit 22 are both 1.3 mm ± 0.1, and the width range between the first slit 21 and the second slit 22 is 9.1 mm ± 0.1; the third slit 23 communicates with the first slit 21 and the second slit 22, and the width range of the third slit 23 is 1.75 mm ± 0.1. The length between the fourth slit 24 and the fifth slit 25 is greater than the length between the first slit 21 and the second slit 22. Specifically, the length range between the fourth slit 24 and the fifth slit 25 is 17.4 mm ± 0.1, and the length range between the first slit 21 and the second slit 22 is 9.1 mm ± 0.1.

[0036] The first grounding portion 26 and the second grounding portion 27 are distributed on two sides of the first slit 21 and the second slit 22, and both the first grounding portion 26 and the second grounding portion 27 are rectangular. The width ranges of both the first grounding portion 26 and the second grounding portion 27 are 3 mm ± 0.1, and the length ranges of both the first grounding portion 26 and the second grounding portion 27 are 11 mm ± 0.1. With such a setting, the overall performance of the high-gain antenna of the present utility model is maximized. As shown in the figure, Figure 5 The return loss image of the overall antenna shown, the antenna resonates at 2400 MHz - 2500 MHz and 5150 MHz - 5850 MHz; Figure 6The overall radiation efficiency of the antenna shown. Specifically, the overall radiation efficiency of the antenna is about -5 dB between the frequency bands of 2400 MHz - 2500 MHz, and about -4 dB between the frequency bands of 5150 MHz - 5850 MHz. In this antenna environment, it can be seen that the antenna of the present utility model has better performance than conventional antennas. Figure 7 The 2D radiation pattern of the antenna shown at the 2450 MHz frequency band, and the overall peak gain of the antenna can reach about 2 dB; Figure 8 The 2D radiation pattern of the antenna shown at the 5725 MHz frequency band, and the overall peak gain of the antenna can reach about 3 dB; Figure 9 The 3D radiation pattern of the antenna shown at the 2450 MHz frequency band Figure 10 The 3D radiation pattern of the antenna shown at the 5725 MHz frequency band. Thus, it can be seen that the high-gain antenna of the present utility model can achieve excellent radiation gain effects.

[0037] In summary, the present utility model provides a high-gain antenna and a terminal device. The high-gain antenna includes a substrate 10 and a radiation antenna 20 attached to the substrate 10. The radiation antenna 20 is bent and attached to the first surface 11 and the second surface 12 of the substrate 10, and the first surface 11 and the second surface 12 are disposed opposite to each other; a recessed groove 13 is formed on the first surface 11, and the bottom of the recessed groove 13 extends to the bent portion of the radiation antenna 20; the radiation antenna 20 is provided with a first slit 21 and a second slit 22, and the radiation portion between the first slit 21 and the second slit 22 is attached to the recessed groove 13. The high-gain antenna of the present utility model can not only increase the overall radiation area of the antenna, but also improve the radiation gain and radiation bandwidth through the self-coupling of the radiation antenna 20 on the upper and lower surfaces of the substrate 10.

[0038] It should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. In addition, the different parts between the embodiments can also be combined and used, and the present utility model does not limit this.

[0039] The above description is only a description of the preferred embodiments of the present utility model, and does not limit the scope of the present utility model in any way. Any changes and modifications made by those of ordinary skill in the art of the present utility model according to the above disclosure shall fall within the protection scope of the claims.

Claims

1. A high-gain antenna, characterized in that: The high-gain antenna includes a substrate and a radiating antenna attached to the substrate, the radiating antenna is bent and placed on the first surface and the second surface of the substrate, and the first surface and the second surface are arranged opposite to each other; a recessed groove is formed on the first surface, and the bottom of the recessed groove extends to the bending point of the radiating antenna; the radiating antenna is provided with at least one group of slots, a first slot and a second slot, and the radiating part between the group of slots is attached to the recessed groove.

2. The high-gain antenna according to claim 1, characterized in that: The group of slots includes at least a first slot and a second slot, and the radiating antenna is in a sheet shape and is bent and attached to the substrate to form a C shape.

3. The high-gain antenna according to claim 2, characterized in that: The first slot and the second slot are arranged parallel to each other, a third slot is provided in a radiation portion between the first slot and the second slot, and the third slot is perpendicular to the first slot and the second slot.

4. The high-gain antenna according to claim 3, characterized in that: A first grounding portion and a second grounding portion are respectively disposed on both sides of the recessed groove, and the first grounding portion and the second grounding portion are symmetrical with respect to the recessed groove.

5. The high-gain antenna according to claim 4, characterized in that: The first grounding portion and the second grounding portion are both rectangular, and are both configured as foam.

6. The high-gain antenna according to claim 5, characterized in that: The high-gain antenna further includes a feeding point and a grounding point, and the feeding point and the grounding point are respectively arranged on both sides of the third slot.

7. The high-gain antenna according to claim 6, characterized in that: The radiating antenna attached to the second surface of the substrate is provided with a fourth slot and a fifth slot, and the fourth slot and the fifth slot are parallel to the first slot and the second slot.

8. The high-gain antenna according to claim 7, characterized in that: A distance between the fourth gap and the fifth gap is greater than a distance between the first gap and the second gap.

9. The high-gain antenna according to claim 8, characterized in that: The radiation antenna is placed on the substrate and is configured such that the radiation antenna is attached, lasered or printed on the substrate.

10. A terminal device, characterized in that: The terminal device comprises the high-gain antenna described in any one of claims 1-9.

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