Loop antenna and mobile terminal

Abstract

The utility model provides a loop antenna and a mobile terminal, the loop antenna comprises a first radiation unit, a second radiation unit, a feed component and a grounding component, the first radiation unit surrounds the feed component and is electrically connected with the feed component, and the second radiation unit is electrically connected with the grounding component. The second radiation unit surrounds the grounding part and is electrically connected with the grounding part; the first radiation unit is connected with the second radiation unit, the first radiation unit is provided with a first slot, the second radiation unit is provided with a second slot, the first slot and the second slot are communicated with each other, and a gap is formed between the first radiation unit and the second radiation unit. According to the loop antenna, the overall performance of the antenna can be effectively improved, the loop antenna can realize coverage of multiple frequency bands in a limited space by adopting a specific structural design, and meanwhile, stable carrier aggregation performance is kept; therefore, the problem that the existing mobile phone antenna design is difficult to meet the high requirement of the North America market on carrier aggregation is solved.

Description

Technical Field

[0001] This utility model relates to the field of communication technology, and in particular to a loop antenna and a mobile terminal. Background Technology

[0002] With the continuous development of 5G base station construction, the frequency bands supported by communication terminals are also constantly expanding. Nowadays, mobile phones are commonly used mobile terminal products. With the continuous development of technology, mobile phones inevitably use 5G communication technology, which requires increasing the number of antennas in mobile phones. However, the space in mobile phones is limited, and the bandwidth of antennas is also limited by space, so the frequency bands covered by the antennas are limited, making it difficult to achieve the wide bandwidth radiation of the antennas.

[0003] As people's demands for internet speed and communication performance increase, mobile communication utilizes carrier aggregation technology, which combines two or more carrier units to support greater transmission bandwidth. Each carrier unit corresponds to an independent cell. Carrier aggregation can efficiently utilize fragmented spectrum, support greater transmission bandwidth, and, after configuration, can simultaneously transmit and receive data with multiple cells, thus significantly improving the user experience. The North American market has high requirements for carrier aggregation, with more complex carrier aggregation combinations. It requires the simultaneous use of intermediate frequencies across all low-frequency bands, and each carrier aggregation combination must maintain similar performance, with minimal performance variation between different low-frequency carrier aggregation combinations. However, existing mobile phone antenna designs often struggle to meet these requirements, especially in achieving multi-band coverage and stable carrier aggregation performance within limited space, which has become a pressing issue. Utility Model Content

[0004] The purpose of this invention is to provide a loop antenna that can effectively improve the overall performance of the antenna. By adopting a specific structural design, the loop antenna can achieve coverage of multiple frequency bands in a limited space while maintaining stable carrier aggregation performance, thereby solving the problem that existing mobile phone antenna designs cannot meet the high requirements of carrier aggregation in the North American market.

[0005] To solve the above-mentioned technical problems, this utility model provides a loop antenna, which includes a first radiating element, a second radiating element, a feeding component, and a grounding component. The first radiating element surrounds the feeding component and is electrically connected to the feeding component, and the second radiating element surrounds the grounding component and is electrically connected to the grounding component. The first radiating element and the second radiating element are connected. The first radiating element has a first slot, and the second radiating element has a second slot. The first slot and the second slot are interconnected, and a gap is formed between the first radiating element and the second radiating element.

[0006] As a further improvement of this utility model, the first radiating unit includes a first branch, a second branch, and a third branch connected in sequence. One end of the first branch is connected to the power supply component, and the other end of the first branch is connected to the second branch.

[0007] As a further improvement of this utility model, the second branch is connected to the third branch, one end of the third branch is perpendicularly connected to the second branch, and the other end of the third branch is perpendicularly connected to the second radiating unit.

[0008] As a further improvement of this utility model, the second radiating unit includes a fourth branch and a fifth branch connected in sequence, one end of the fourth branch is connected to one end of the third branch, and the other end of the fourth branch is connected to the fifth branch.

[0009] As a further improvement of this utility model, the fifth branch is connected to the grounding component, and the fifth branch is connected to the fourth branch in a ring and surrounds the grounding component.

[0010] As a further improvement of this utility model, the fourth branch and the first branch are connected by the gap, and the gap is interconnected with the first groove and the second groove.

[0011] As a further improvement of this utility model, the loop antenna further includes a sixth branch and a seventh branch, wherein the sixth branch is connected to the first radiating element and the seventh branch is connected to the sixth branch.

[0012] As a further improvement of this utility model, the gap is configured as the distance between the power supply component and the grounding component, and the gap controls the resonant frequency deviation of the intermediate frequency.

[0013] As a further improvement of this utility model, the fourth branch is configured to control the resonance of the intermediate frequency; the second branch is configured to control the resonant frequency deviation of the low frequency; the seventh branch is configured to control the resonant frequency deviation of the low frequency and the resonant frequency deviation of the intermediate frequency; and the sixth branch is configured to control the resonant frequency deviation of the low frequency and the resonant frequency deviation of the intermediate frequency.

[0014] The purpose of this invention is to provide a mobile terminal that can better utilize the aforementioned loop antenna.

[0015] To solve the above-mentioned technical problems, the present invention provides a mobile terminal, which includes the aforementioned loop antenna.

[0016] This invention provides a loop antenna and a mobile terminal. The loop antenna includes a first radiating element, a second radiating element, a feeding component, and a grounding component. The first radiating element surrounds the feeding component and is electrically connected to it. The second radiating element surrounds the grounding component and is electrically connected to it. The first and second radiating elements are connected. The first radiating element has a first slot, and the second radiating element has a second slot. The first and second slots are interconnected, and a gap is formed between the first and second radiating elements. This loop antenna effectively improves the overall performance of the antenna. Through a specific structural design, the loop antenna can achieve coverage of multiple frequency bands within a limited space while maintaining stable carrier aggregation performance, thus solving the problem that existing mobile phone antenna designs cannot meet the high carrier aggregation requirements of the North American market. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the loop antenna of this utility model.

[0018] The labels in the attached figures are explained as follows:

[0019] Power supply component 1, grounding component 2, first slot 3, second slot 4, gap 5, first radiating unit 6, first branch 61, second branch 62, third branch 63, second radiating unit 7, fourth branch 71, fifth branch 72, sixth branch 9, and seventh branch 8. Detailed Implementation

[0020] The loop antenna proposed in this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and use non-precise scales, and are only used 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 drawings may emphasize different aspects and sometimes use different scales.

[0021] This invention provides a loop antenna that can be used in various mobile terminals, such as smartphones, tablets, and laptops.

[0022] This utility model provides a loop antenna, which includes a first radiating element 6, a second radiating element 7, a feeding component 1, and a grounding component 2. The first radiating element 6 surrounds the feeding component 1 and is electrically connected to the feeding component 1. The second radiating element 7 surrounds the grounding component 2 and is electrically connected to the grounding component 2. The first radiating element 6 and the second radiating element 7 are connected. The first radiating element 6 has a first slot 3, and the second radiating element 7 has a second slot 4. The first slot 3 and the second slot 4 are interconnected, and a gap 5 is formed between the first radiating element 6 and the second radiating element 7.

[0023] This configuration effectively improves the overall performance of the antenna. Through a specific structural design, the loop antenna can achieve coverage of multiple frequency bands within a limited space while maintaining stable carrier aggregation performance, thus solving the problem that existing mobile phone antenna designs cannot meet the high carrier aggregation requirements of the North American market. Furthermore, the design of this loop antenna fully considers electromagnetic compatibility issues. Through meticulous electromagnetic simulation and optimization, mutual interference between antennas is reduced, improving the overall communication quality of the mobile terminal. In practical applications, this loop antenna demonstrates excellent signal reception and transmission capabilities, maintaining a stable communication connection even in weak signal environments. This characteristic makes mobile terminals equipped with this loop antenna more adaptable and competitive in complex and ever-changing communication environments.

[0024] Furthermore, the first radiating element 6 includes a first branch 61, a second branch 62, and a third branch 63 connected sequentially. One end of the first branch 61 is connected to the feed component 1, and the other end of the first branch 61 is connected to the second branch 62. Thus, one end of the second branch 62 is connected to the first branch 61, and the other end is connected to the third branch 63. The precise design ensures a good electrical connection between the first branch 61, the second branch 62, and the third branch 63. This connection not only guarantees smooth signal transmission but also enhances the overall structural strength of the antenna. The first branch 61, as the main connection part of the feed point, is designed with impedance matching in mind to reduce signal reflection and improve antenna efficiency. The second branch 62 serves as a transition and adjustment element; by adjusting its length and shape, the frequency response and radiation pattern of the antenna can be further optimized. The third branch 63 is mainly responsible for radiating or receiving electromagnetic waves into space, and its shape and size design have a crucial impact on the antenna's gain and directivity. This structural design allows the loop antenna to achieve wide bandwidth coverage and high-efficiency signal transmission while maintaining a compact size. Furthermore, the second branch 62 is connected to the third branch 63, with one end of the third branch 63 perpendicularly connected to the second branch 62 and the other end of the third branch 63 perpendicularly connected to the second radiating element 7.

[0025] As a further improvement of this utility model, the second radiating element 7 includes a fourth branch 71 and a fifth branch 72 connected in sequence. One end of the fourth branch 71 is connected to one end of the third branch 63, and the other end of the fourth branch 71 is connected to the fifth branch 72. The fifth branch 72 is connected to the grounding component 2, and the fifth branch 72 and the fourth branch 71 are connected in a ring and surround the grounding component 2. This design further enhances the performance of the antenna. The fourth branch 71, as a bridge connecting the third branch 63 and the fifth branch 72, acts as a bridge for signal transmission. Its optimized length and shape can further reduce signal loss and improve the sensitivity of the antenna. The fifth branch 72 is connected to the grounding component 2, forming a complete circuit loop. This design helps to suppress electromagnetic interference and improve the stability of the antenna. At the same time, the fifth branch 72 and the fourth branch 71 are connected in a ring and surround the grounding component 2. This structure not only enhances the structural strength of the antenna but also helps to optimize the radiation pattern of the antenna, giving the antenna better signal coverage and gain performance in a specific direction. This design enables the loop antenna to maintain excellent performance in complex electromagnetic environments, meeting the needs of various application scenarios.

[0026] Furthermore, a gap 5 is formed between the fourth branch 71 and the first branch 61, and the gap 5 communicates with the first slot 3 and the second slot 4. The loop antenna also includes a sixth branch 9 and a seventh branch 8, with the sixth branch 9 connected to the first radiating element 6 and the seventh branch 8 connected to the sixth branch 9. This design makes the antenna structure more complex, but also brings more performance advantages. The gap 5 formed between the fourth branch 71 and the first branch 61, and the communication between this gap 5 and the first slot 3 and the second slot 4, provides the antenna with more signal transmission paths. This multipath transmission not only enhances the antenna's signal strength but also improves its anti-interference capability in complex electromagnetic environments. The introduction of the sixth branch 9 and the seventh branch 8 further enriches the antenna structure, providing more possibilities for signal transmission. The connection between the sixth branch 9 and the first radiating element 6 optimizes the antenna's front-end performance, helping to improve the antenna's receiving and transmitting efficiency. The connection between the seventh branch 8 and the sixth branch 9 forms a more complete signal transmission network, giving the antenna better stability and reliability during signal transmission. This design not only improves the overall performance of the antenna but also lays a solid foundation for its excellent performance in various application scenarios.

[0027] Preferably, the gap 5 is configured as the distance between the feeding component 1 and the grounding component 2, and the gap 5 controls the resonant frequency offset of the intermediate frequency (IF). The fourth stub 71 is configured to control the IF resonance; the second stub 63 is configured to control the low-frequency resonant frequency offset; the seventh stub 8 is configured to control both the low-frequency and IF resonant frequency offsets; and the sixth stub 9 is configured to control both the low-frequency and IF resonant frequency offsets. Furthermore, this antenna design further optimizes the high-frequency resonant frequency offset by finely adjusting the length and position of each stub. Specifically, the interaction between the first stub 61 and the second slot 4 not only affects the signal transmission in the low-frequency band but also subtly influences the resonant frequency offset in the high-frequency band. This synergistic effect of multiple stubs and slots allows the antenna to maintain good signal transmission performance across a wide bandwidth. Simultaneously, by adjusting the size of the gap 5 between the feeding component 1 and the grounding component 2, the resonant frequency offset in the IF band can be precisely controlled, thereby meeting the specific performance requirements of different application scenarios. This design not only reflects the complexity of the antenna structure, but also demonstrates its outstanding performance in signal transmission.

[0028] In summary, this utility model provides a loop antenna and a mobile terminal. The loop antenna includes a first radiating element 6, a second radiating element 7, a feeding component 1, and a grounding component 2. The first radiating element 6 surrounds the feeding component 1 and is electrically connected to it. The second radiating element 7 surrounds the grounding component 2 and is electrically connected to it. The first radiating element 6 and the second radiating element 7 are connected. The first radiating element 6 has a first slot 3, and the second radiating element 7 has a second slot 4. The first slot 3 and the second slot 4 are interconnected, and a gap 5 is formed between the first radiating element 6 and the second radiating element 7. The loop antenna of this utility model can effectively improve the overall performance of the antenna. By adopting a specific structural design, the loop antenna can achieve coverage of multiple frequency bands in a limited space while maintaining stable carrier aggregation performance, thereby solving the problem that existing mobile phone antenna designs cannot meet the high requirements of carrier aggregation in the North American market.

[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. A loop antenna, characterized by: The annular antenna comprises a first radiating unit, a second radiating unit, a feeding component and a grounding component, the first radiating unit surrounds and is electrically connected with the feeding component, and the second radiating unit surrounds and is electrically connected with the grounding component; the first radiating unit is connected with the second radiating unit, the first radiating unit is provided with a first slot, the second radiating unit is provided with a second slot, the first slot and the second slot are mutually penetrated, and a gap is formed between the first radiating unit and the second radiating unit.

2. The loop antenna according to claim 1, characterized in that: The first radiating unit comprises a first branch, a second branch and a third branch connected in sequence, one end of the first branch is connected with the feeding component, and the other end of the first branch is connected with the second branch.

3. The loop antenna of claim 2, wherein: The second branch is connected with the third branch, one end of the third branch is connected with the second branch perpendicularly, and the other end of the third branch is connected with the second radiating unit perpendicularly.

4. The loop antenna of claim 3, wherein: The second radiating unit comprises a fourth branch and a fifth branch connected in sequence, one end of the fourth branch is connected with one end of the third branch, and the other end of the fourth branch is connected with the fifth branch.

5. The loop antenna of claim 4, wherein: The fifth branch is connected with the grounding component, and the fifth branch is annularly connected with the fourth branch and surrounds the grounding component.

6. The loop antenna of claim 5, wherein: The gap is formed between the fourth branch and the first branch, and the gap is mutually penetrated with the first slot and the second slot.

7. The loop antenna of claim 6, wherein: The annular antenna further comprises a sixth branch and a seventh branch, the sixth branch is connected with the first radiating unit, and the seventh branch is connected with the sixth branch.

8. The loop antenna of claim 7, wherein: The gap is configured as a distance between the feeding component and the grounding component, and the gap controls resonance frequency deviation of a medium frequency.

9. The loop antenna of claim 8, wherein: The fourth branch is configured to control resonance of a medium frequency, the second branch is configured to control resonance frequency deviation of a low frequency, the seventh branch is configured to control resonance frequency deviation of a low frequency and resonance frequency deviation of a medium frequency, and the sixth branch is configured to control resonance frequency deviation of a low frequency and resonance frequency deviation of a medium frequency.

10. A mobile terminal, characterized by: The mobile terminal comprises the annular antenna according to any one of claims 1-9.

Images