Antenna structure and mobile terminal

Abstract

The application discloses an antenna structure and a mobile terminal, and relates to the technical field of antennas, and the antenna structure comprises a feeding unit, a feeding-ground unit and a resonant unit, the resonant unit is connected with the feeding unit and the feeding-ground unit, the resonant unit comprises a first branch, a second branch and a third branch, the first branch, the second branch and the third branch are connected with each other and are arranged on the same plane, and the first branch, the second branch and the third branch have a coupling gap therebetween.

Description

Technical Field

[0001] This invention relates to the field of antenna technology, and in particular to an antenna structure and a mobile terminal. Background Technology

[0002] In recent decades, with the rapid development of mobile communication technology and the continuous iteration and upgrading of terminal devices, the number of mobile terminal device users has exploded, and the market demand for wireless communication speed, stability, and high integration has been increasing. As a key component in achieving wireless signal transmission and reception and communication quality, the performance of antennas directly determines the communication experience and data transmission capabilities of mobile terminals. Therefore, antenna design faces higher and more complex comprehensive performance requirements. To adapt to the increasingly compact internal space and increasingly rich communication functions of mobile terminal devices, achieving antenna miniaturization, multi-band operation, and high integration has become an important research direction in the field of mobile terminal device antenna design. Currently, conventional antenna designs often have large antenna clearance areas and large antenna sizes, resulting in low space utilization and difficulty in achieving multi-band antenna coverage in a small space. Summary of the Invention

[0003] The main objective of this invention is to propose an antenna structure and mobile terminal that aims to increase the bandwidth of the antenna within a limited installation space.

[0004] To achieve the above objectives, the antenna structure proposed in this invention includes: Power supply unit; Ground feeder unit; A resonant unit is connected to the power supply unit and the ground supply unit. The resonant unit includes a first branch, a second branch, and a third branch. The first branch, the second branch, and the third branch are interconnected and disposed on the same plane. There is a coupling gap between the first branch, the second branch, and the third branch.

[0005] In one embodiment, the first spur includes a first resonant segment, a second resonant segment, and a third resonant segment. The end of the first resonant segment away from the second and third resonant segments is connected to the second and third spurs. The extension direction of the first resonant segment is parallel to the extension direction of the third spur.

[0006] In one embodiment, the first branch is T-shaped, the second resonant segment and the third resonant segment are connected to the two ends of the first resonant segment, and the second resonant segment extends along the width direction of the third branch.

[0007] In one embodiment, the extension direction of the second branch is parallel to the extension direction of the third resonant segment.

[0008] In one embodiment, the second branch includes a fourth resonant segment, a fifth resonant segment, and a sixth resonant segment, wherein the fifth resonant segment and the sixth resonant segment are connected to the side of the fourth resonant segment away from the power supply unit.

[0009] In one embodiment, the width of the fifth resonant segment is smaller than the width of the sixth resonant segment.

[0010] In one embodiment, the power supply unit and the ground supply unit are spaced apart along the extension direction of the first resonant segment.

[0011] In one embodiment, the power supply unit includes a first bent section and a power supply pin. The power supply pin is spaced apart from the resonant unit along the thickness direction. The first bent section extends and bends along the thickness direction of the resonant unit. The power supply pin is connected to the end of the first bent section away from the resonant unit. The grounding unit includes a second bending section and a grounding foot. The grounding foot is spaced apart from the resonant unit along the thickness direction. The second bending section extends and bends along the thickness direction of the resonant unit. The grounding foot is connected to the end of the second bending section away from the resonant unit.

[0012] In one embodiment, the surfaces of both the power feed pin and the ground feed pin are gold-plated.

[0013] The present invention also proposes a mobile terminal, the mobile terminal including an antenna structure, the antenna structure comprising: Power supply unit; Ground feeder unit; A resonant unit is connected to the power supply unit and the ground supply unit. The resonant unit includes a first branch, a second branch, and a third branch. The first branch, the second branch, and the third branch are interconnected and disposed on the same plane. There is a coupling gap between the first branch, the second branch, and the third branch.

[0014] The technical solution of this invention proposes an antenna structure, including a feeding unit, a grounding unit, and a resonant unit. The feeding unit transmits radio frequency signals to the resonant unit, which, upon excitation, generates resonance, enabling the radiation and reception of electromagnetic wave signals. The grounding unit provides a grounding loop, absorbs interference signals, and ensures the stable operation of the resonant unit. The coordinated operation of these three components ensures efficient signal radiation and reception, adjusts the resonant frequency through coupling gaps to meet the multi-band communication needs of mobile terminals, simplifies the overall antenna structure layout, reduces space occupation, aligns with the miniaturization and thinning design trends of mobile terminals, and improves the communication quality and user experience of mobile terminals. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an embodiment of the antenna structure provided by the present invention.

[0017] Figure 2 for Figure 1 A top view of the antenna structure.

[0018] Figure 3 for Figure 2 A bottom view of the antenna structure.

[0019] Figure 4 This is a schematic diagram of the antenna structure installed on the camera module.

[0020] Explanation of reference numerals in the attached diagram: 100, Antenna structure; 1, Feeding unit; 11, First bend section; 12, Feeding pin; 2, Grounding unit; 21, Second bend section; 22, Grounding pin; 3, Resonant unit; 31, First stub; 311, First resonant section; 312, Second resonant section; 313, Third resonant section; 32, Second stub; 321, Fourth resonant section; 322, Fifth resonant section; 323, Sixth resonant section; 33, Third stub.

[0021] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0025] In recent decades, with the rapid development of mobile communication technology and the continuous iteration and upgrading of terminal devices, the number of mobile terminal device users has exploded, and the market demand for wireless communication speed, stability, and high integration has been increasing. As a key component in achieving wireless signal transmission and reception and communication quality, the performance of antennas directly determines the communication experience and data transmission capabilities of mobile terminals. Therefore, antenna design faces higher and more complex comprehensive performance requirements. To adapt to the increasingly compact internal space and increasingly rich communication functions of mobile terminal devices, achieving antenna miniaturization, multi-band operation, and high integration has become an important research direction in the field of mobile terminal device antenna design. Currently, conventional antenna designs often have large antenna clearance areas and large antenna sizes, resulting in low space utilization and difficulty in achieving multi-band antenna coverage in a small space.

[0026] To solve the above problems, please refer to... Figures 1 to 3 The present invention proposes an antenna structure 100, including a power feeding unit 1, a ground feeding unit 2, and a resonant unit 3. The resonant unit 3 is connected to the power feeding unit 1 and the ground feeding unit 2. The resonant unit 3 includes a first stub 31, a second stub 32, and a third stub 33. The first stub 31, the second stub 32, and the third stub 33 are interconnected and disposed on the same plane. There is a coupling gap between the first stub 31, the second stub 32, and the third stub 33.

[0027] This invention proposes an antenna structure 100 suitable for various mobile terminals requiring wireless communication functions, such as smartphones, tablets, smartwatches, and laptops. By receiving and transmitting radio electromagnetic wave signals, it enables wireless communication between the mobile terminal and the outside world, including functions such as calls, data transmission, wireless network connection, and positioning. The antenna structure 100 includes a feeding unit 1, a grounding unit 2, and a resonant unit 3. The feeding unit 1 transmits the radio frequency signals from the mobile terminal's motherboard to the resonant unit 3, providing stable power support. The grounding unit 2 is connected to the ground plane of the mobile terminal, providing a grounding loop for the antenna structure 100, reducing signal interference, and improving the antenna's radiation efficiency and signal stability. The resonant unit 3 is integrally formed on the same plane and connected to the feeding unit 1 and the grounding unit 2; it is the core component of the antenna structure 100 for radiating and receiving electromagnetic wave signals. The resonant unit 3 includes a first branch 31, a second branch 32, and a third branch 33, which are interconnected to form an integrated structure and are all located in the same plane to ensure the consistency and stability of signal radiation. Uniform coupling gaps are reserved between the first branch 31, the second branch 32, and the third branch 33. These coupling gaps are used to achieve electromagnetic coupling between the branches and adjust the resonant frequency of the antenna. The feed unit 1 transmits the radio frequency signal to the resonant unit 3. After being excited, the resonant unit 3 resonates, generating and receiving electromagnetic wave signals. The grounding unit 2 provides a grounding loop to absorb interference signals and ensure the stable operation of the resonant unit 3. The coordinated operation of these three components ensures that the antenna structure 100 can efficiently radiate and receive signals, and adjusts the resonant frequency through the coupling gaps to meet the multi-band communication needs of mobile terminals. It also simplifies the overall layout of the antenna structure 100, reduces space occupation, and adapts to the design trend of miniaturization and thinning of mobile terminals, improving the communication quality and user experience of mobile terminals.

[0028] Furthermore, in one embodiment, the first branch 31 includes a first resonant segment 311, a second resonant segment 312, and a third resonant segment 313. The end of the first resonant segment 311 away from the second resonant segment 312 and the third resonant segment 313 is connected to the second branch 32 and the third branch 33. The extension direction of the first resonant segment 311 is parallel to the extension direction of the third branch 33.

[0029] The first stub 31 comprises a first resonant segment 311, a second resonant segment 312, and a third resonant segment 313, all integrally formed to ensure the continuity and stability of signal transmission and reduce signal loss. The first resonant segment 311 has a linear structure, with its end furthest from the second and third resonant segments 312 and 313 connected to the second and third stubs 32 and 33, forming an integrated resonant unit 3. This connection point is the core area for signal coupling, ensuring efficient electromagnetic coupling between the first stub 31 and the second and third stubs 32 and 33. The second and third resonant segments 312 and 313 are respectively connected to the two ends of the first resonant segment 311, perpendicular to it. Their length and width are designed according to the antenna's resonant frequency requirements to adjust the resonant characteristics of the first stub 31. The extension direction of the first resonant segment 311 is parallel to the extension direction of the third stub 33, maintaining a uniform coupling gap between them to ensure stable electromagnetic coupling, further optimizing the antenna's resonance effect and improving signal radiation efficiency. The first resonant segment 311 receives the radio frequency signal transmitted by the feed unit 1 and transmits the signal to the second resonant segment 312 and the third resonant segment 313. The second resonant segment 312 and the third resonant segment 313 are used to shunt the signal. By adjusting their length and width, the operating frequency band of the resonant stub can be adjusted. The parallel arrangement of the first resonant segment 311 and the third stub 313 strengthens the electromagnetic coupling between them, ensuring efficient signal radiation. This segmented structural design allows the resonant characteristics of the first stub 31 to be flexibly adjusted, adapting to the multi-band communication needs of mobile terminals. At the same time, the integrated structure reduces signal loss during transmission, improves the communication quality and signal stability of the antenna, and is suitable for the usage scenarios of mobile terminals.

[0030] In one embodiment, the first branch 31 is T-shaped, the second resonant segment 312 and the third resonant segment 313 are connected to the two ends of the first resonant segment 311, and the second resonant segment 312 extends along the width direction of the third branch 33.

[0031] The first segment 31 is T-shaped, which ensures uniform signal transmission and optimizes the coupling effect between segments, reducing signal interference. The second resonant segment 312 and the third resonant segment 313 are connected to the two ends of the first resonant segment 311 and intersect the first resonant segment 311 perpendicularly, forming a T-shaped structure. The second resonant segment 312 extends along the width direction of the third segment 33, and the extension length matches the width of the third segment 33, ensuring that a reasonable coupling gap is maintained between the second resonant segment 312 and the third segment 33, achieving stable electromagnetic coupling, and avoiding signal interference between them. The first branch 31 of the T-shaped structure, with its first resonant segment 311 serving as the main trunk, receives the feed signal and shunts it to the second resonant segment 312 and the third resonant segment 313 at both ends. The shunt signal is radiated through the two resonant segments respectively, improving the coverage and efficiency of signal radiation. The second resonant segment 312 extends along the width of the third branch 33, increasing the coupling area between the second resonant segment 312 and the third branch 33, resulting in a more stable coupling effect and further adjusting the resonant frequency of the antenna. This T-shaped structure design simplifies the layout of the first branch 31, reduces the space occupied by the antenna structure 100, adapts to the miniaturization design requirements of mobile terminals, helps improve the communication quality of the antenna, and ensures that the mobile terminal can obtain a stable wireless signal in different scenarios.

[0032] In one embodiment, the extension direction of the second branch 32 is parallel to the extension direction of the third resonant segment 313.

[0033] Specifically, in this embodiment, the antenna structure 100 is U-shaped, with the extension direction of the second branch 32 parallel to the extension direction of the third resonant segment 313. The consistent extension directions of the second branch 32 and the third resonant segment 313 ensure their electromagnetic radiation directions are the same, improving the overall signal radiation efficiency of the antenna and preventing signal cancellation due to different extension directions, thus ensuring efficient signal radiation to the outside. The parallel arrangement of the second branch 32 and the third resonant segment 313, with their matching lengths, ensures their resonant frequencies are matched, further expanding the antenna's operating frequency range and enabling it to adapt to wireless communication needs across more frequency bands, including 2G, 3G, 4G, 5G, and Wi-Fi. As an important component of the resonant unit 3, the second branch 32 assists the first branch 31 and the third branch 33 in achieving resonance. Its parallel arrangement with the third resonant segment 313 strengthens the electromagnetic coupling between them, making the overall electromagnetic characteristics of the resonant unit 3 more stable and reducing signal loss during transmission. When the power supply unit 1 transmits the radio frequency signal to the resonant unit 3, the third resonant segment 313 of the first branch 31 electromagnetically couples with the parallel second branch 32, working together with the third branch 33 to achieve signal radiation, thus improving the efficiency and stability of signal radiation. This structure optimizes the overall layout of the resonant unit 3, reduces signal interference between branches, improves coupling effect and radiation efficiency, broadens the operating bandwidth, and adapts to the multi-band, high-performance communication needs of mobile terminals, ensuring stable and smooth wireless communication of mobile terminals.

[0034] In one embodiment, the second branch 32 includes a fourth resonant segment 321, a fifth resonant segment 322, and a sixth resonant segment 323, with the fifth resonant segment 322 and the sixth resonant segment 323 connected to the side of the fourth resonant segment 321 away from the power supply unit 1.

[0035] The second stub 32 comprises a fourth resonant segment 321, a fifth resonant segment 322, and a sixth resonant segment 323, all integrally formed to ensure continuous signal transmission without signal loss, while also enhancing the structural stability of the second stub 32. The fourth resonant segment 321 connects at one end to the first stub 31 and the third stub 33, and at the other end to the feed unit 1, serving as the backbone of the second stub 32. It receives the radio frequency signal transmitted from the feed unit 1 and transmits the signal to the fifth resonant segment 322 and the sixth resonant segment 323. The fifth resonant segment 322 and the sixth resonant segment 323 are connected to the side of the fourth resonant segment 321 furthest from the feed unit 1, and their extension directions are consistent, improving the uniformity of signal radiation. The lengths of the fifth resonant segment 322 and the sixth resonant segment 323 are designed according to the antenna's resonant frequency requirements, used to adjust the resonant characteristics of the second stub 32, assisting the first stub 31 and the third stub 33 in expanding the antenna's operating frequency and improving the antenna's signal radiation efficiency. The fourth resonant segment 321 receives and transmits the feed signal, while the fifth resonant segment 322 and the sixth resonant segment 323 shunt the signal and achieve multi-band resonance. The three work together to enable the second branch 32 to achieve its own resonant radiation and to generate good electromagnetic coupling with the first branch 31 and the third branch 33, thus optimizing the overall performance of the resonant unit 3.

[0036] In one embodiment, the width of the fifth resonant segment 322 is smaller than the width of the sixth resonant segment 323. This width difference is designed to precisely adjust the resonant frequency of the second stub 32, optimize the electromagnetic characteristics of the antenna, and improve signal radiation efficiency.

[0037] In one embodiment, the power supply unit 1 and the ground supply unit 2 are spaced apart along the extension direction of the first resonant segment 311.

[0038] Feed unit 1 and ground unit 2 are spaced apart along the extension direction of the first resonant segment 311, parallel to each other with uniform spacing. The spacing is designed according to the antenna's feeding requirements to ensure that feed unit 1 can stably transmit radio frequency signals, and ground unit 2 can effectively provide a grounding loop, reducing signal interference. Feed unit 1 and ground unit 2 are positioned along the extension direction of the first resonant segment 311, maintaining a reasonable distance from it to avoid short circuits. This also ensures convenient connections between feed unit 1 and resonant unit 3, and between ground unit 2 and resonant unit 3, minimizing signal transmission path losses. Their spaced arrangement allows the radio frequency signal from feed unit 1 to be efficiently transmitted to resonant unit 3, while ground unit 2 can quickly absorb interference signals generated by resonant unit 3, forming a stable grounding loop. This improves the antenna's radiation efficiency and signal stability, preventing interference signals from affecting other electronic components of the mobile terminal. The parallel spacing of the power supply unit 1 and the ground supply unit 2 optimizes the overall layout of the antenna structure 100, ensuring uniform distribution of components, reducing space occupation, and meeting the design requirements of miniaturization and thinness of mobile terminals. It also facilitates the connection and assembly of the antenna structure 100 with the mobile terminal motherboard. The power supply unit 1 transmits signals, and the ground supply unit 2 provides grounding. The two are spaced apart along the extension direction of the first resonant segment 311, ensuring that signal transmission and grounding loops are independent and do not interfere with each other. This synergistic arrangement enhances the overall performance of the antenna, ensuring stable and efficient wireless communication for the mobile terminal and reducing signal stuttering and interruptions.

[0039] In one embodiment, the power supply unit 1 includes a first bent section 11 and a power supply pin 12. The power supply pin 12 is spaced apart from the resonant unit 3 along the thickness direction. The first bent section 11 extends and bends along the thickness direction of the resonant unit 3. The power supply pin 12 is connected to the end of the first bent section 11 away from the resonant unit 3. The ground supply unit 2 includes a second bent section 21 and a ground supply pin 22. The ground supply pin 22 is spaced apart from the resonant unit 3 along the thickness direction. The second bent section 21 extends and bends along the thickness direction of the resonant unit 3. The ground supply pin 22 is connected to the end of the second bent section 21 away from the resonant unit 3.

[0040] The power supply unit 1 includes a first bent section 11 and a power supply pin 12, which are integrally formed to ensure the continuity and stability of signal transmission without signal loss. The power supply pin 12 and the resonant unit 3 are spaced apart along the thickness direction, and they do not directly contact each other to avoid short circuit faults. At the same time, it ensures that the power supply pin 12 can accurately connect with the RF interface of the mobile terminal motherboard to achieve stable RF signal transmission. The first bent section 11 extends inward along the thickness direction of the resonant unit 3 and is bent. One end is connected to the resonant unit 3, and the other end is connected to the power supply pin 12. It is used to connect the resonant unit 3 and the power supply pin 12, so that the power supply pin 12 can maintain a thickness-direction gap with the resonant unit 3, while shortening the signal transmission path. Similarly, the grounding unit 2 includes a second bent section 21 and a grounding pin 22, which are integrally formed and made of the same material as the grounding unit 2 to ensure the stability of the grounding loop. The grounding pin 22 and the resonant unit 3 are spaced apart along the thickness direction, and the height is consistent with that of the power supply pin 12, ensuring that the grounding pin 22 can accurately connect with the ground plane of the mobile terminal to achieve stable grounding. The second bending segment 21 extends and bends along the thickness direction of the resonant unit 3, with the bending angle also being 90 degrees, symmetrical to the first bending segment 11. One end of it is connected to the resonant unit 3, and the other end is connected to the grounding pin 22, used to connect the resonant unit 3 and the grounding pin 22, ensuring that the grounding pin 22 and the resonant unit 3 are spaced apart. The bending of the first bending segment 11 and the second bending segment 21 ensures that the power supply pin 12 and the grounding pin 22 are spaced apart from the resonant unit 3 in the thickness direction to avoid short circuits, while also adapting to the installation gap between the mobile terminal motherboard and the antenna structure 100, facilitating assembly; the power supply pin 12 and the grounding pin 22 respectively connect to the motherboard RF interface and the ground plane to achieve independent operation of signal transmission and grounding loop. The symmetrical structure of the two structures ensures the electromagnetic characteristics of the antenna structure 100 are balanced, reduces signal interference, and helps to improve the radiation efficiency and signal stability of the antenna. At the same time, the bending structure simplifies the assembly process, reduces the assembly difficulty, and adapts to the mass production needs of mobile terminals.

[0041] In one embodiment, the surfaces of both the feed pin 12 and the ground pin 22 are gold-plated. The gold plating layer is of uniform thickness, covering the entire surface of the feed pin 12 and the ground pin 22, including the mating surface and the side surfaces, ensuring the integrity and continuity of the gold plating layer. Gold plating significantly improves the conductivity of the feed pin 12 and the ground pin 22. Gold has a high conductivity and low resistance, reducing signal loss during transmission, ensuring efficient transmission of radio frequency signals, and rapid grounding, thus improving the overall performance of the antenna. The gold plating layer also possesses excellent oxidation and corrosion resistance, preventing the feed pin 12 and the ground pin 22 from oxidizing and corroding during long-term use, which could lead to poor contact and increased signal loss, extending the service life of the antenna structure 100 and ensuring long-term stable wireless communication for the mobile terminal. The gold plating on power feed pin 12 improves the contact performance with the RF interface of the mobile terminal motherboard, ensuring a tight connection and good conductivity, and preventing signal interruptions or delays due to poor contact. The gold plating on ground pin 22 improves the contact stability with the mobile terminal's ground plane, ensuring a smooth grounding loop, effectively absorbing interference signals, and reducing signal interference. Although the gold plating of power feed pin 12 and ground pin 22 increases processing costs, it significantly improves the antenna's conductivity, stability, and lifespan, optimizes the communication quality of the mobile terminal, ensures stable wireless signals even in complex environments, and meets the needs of long-term mobile terminal use, reducing subsequent maintenance costs.

[0042] This invention also proposes a mobile terminal, which includes an antenna structure 100. The specific structure of the antenna structure 100 is as described in the above embodiments. Since this mobile terminal adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here. The mobile terminal includes the antenna structure 100 and is suitable for various mobile terminal devices with wireless communication functions, such as smartphones, tablets, smartwatches, and laptops. The mobile terminal also includes core components such as a motherboard, display screen, battery, and casing. The motherboard provides control and power supply support for the entire mobile terminal. The motherboard has a radio frequency interface and a ground plane, which are precisely connected to the feed pin 12 and ground pin 22 of the antenna structure 100, respectively, to realize the transmission of radio frequency signals and the conduction of the grounding loop. The display screen is used to display various information and provide an operating interface for the user. The battery provides power support for all components of the mobile terminal, including the normal operation of the antenna structure 100. The casing is made of high-strength material to protect all internal components and provide installation space for the antenna structure 100. The antenna structure 100 is fixedly installed inside the casing of the mobile terminal, and is arranged in a U-shape at the position of the camera to avoid obstruction by other components and ensure smooth signal radiation and reception. The size of the antenna structure 100 is adapted to the internal layout of the mobile terminal, reducing space occupation and conforming to the design trend of miniaturization and thinness of mobile terminals. When the mobile terminal is working, the RF module of the motherboard generates RF signals, which are transmitted to the feed pin 12 of the antenna structure 100 through the RF interface. The feed pin 12 transmits the signal to the resonant unit 3 through the first bend section 11. The resonant unit 3 generates resonance through the electromagnetic coupling of its branches, radiating wireless signals. At the same time, the resonant unit 3 receives external wireless signals and transmits them to the RF module of the motherboard through the opposite path to complete signal reception. The ground unit 2 is connected to the ground plane of the motherboard through the ground pin 22 to provide a stable grounding loop and absorb interference signals. The antenna structure 100 works in tandem with various components of the mobile terminal to ensure that the mobile terminal can achieve stable and efficient wireless communication. The multi-band design of the antenna structure 100 is adapted to different communication scenarios. The gold plating and optimized coupling structure improve communication quality and stability. The miniaturized layout adapts to the design requirements of the mobile terminal, providing users with a smooth and stable wireless experience and meeting users' diverse wireless communication needs.

[0043] The following is a detailed description of one embodiment of the antenna structure 100 in this scheme: The antenna structure 100 in this scheme mainly consists of three parts: a feed unit 1, a ground unit 2, and an antenna resonant unit 3. The feed unit 1 consists of a first bent section 11 and a feed pin 12; the ground unit 2 consists of a second bent section 21 and a ground pin 22; and the resonant unit 3 consists of a low-frequency first stub 31, an intermediate-frequency second stub 32, and a high-frequency third stub 33. Specifically, the feed pin 12-first bent section 11-first resonant section 311-second resonant section 312-third resonant section 313 form a low-frequency radiating unit. The feed pin 12-first bent section 11-fourth resonant section 321-fifth resonant section 322-sixth resonant section 323 form an intermediate-frequency radiating unit. The feed pin 12-first bent section 11-third stub 33 form a high-frequency radiating unit. The feed pin 12-first bent section 11-second bent section 21-ground pin 22 form a ground loop.

[0044] Among them, the antenna resonant stubs mentioned above can be simplified to L; the coupling effect between each antenna resonant stub can be simplified to C; the ground loop between feed pin 12 and ground pin 22 can be simplified to L; the coupling effect between each antenna resonant stub and ground unit 2 can be simplified to C; based on the basic principle of C=λ*f, L=λ / 4 (C is the speed of light, λ is the wavelength, f is the frequency, and L is the antenna length), and combined with the working principle and characteristics of the LC oscillation circuit, this serves as the design principle and idea of ​​the antenna structure 100 in this scheme; by adjusting the position and spacing of feed unit 1 and ground unit 2, as well as the length, width, and gap between each resonant stub, the LC value in the LC oscillation circuit is changed, thereby achieving the adjustment of the antenna resonant frequency.

[0045] The advantages of antenna structure 100 in this scheme are as follows: 1. Multi-band design: Conventional antenna designs struggle to cover multiple frequency bands in a small space. This solution's antenna structure relies on structural features to rationally distribute feed points, feed locations, and antenna traces within a small space, achieving the integration of a high-performance multi-band antenna within a small space.

[0046] 2. Miniaturization and high integration: The antenna structure in this solution is 100% integrated into a tiny camera module. The antenna wiring is designed in a U-shape, and the antenna resonant stubs are densely distributed, reducing the antenna size. It combines the two major features of antenna miniaturization and high integration, solving the design concept of product thinness, narrow bezel and compact layout.

[0047] 3. High portability: The motherboard terminals corresponding to the power supply pin 12 and ground pin 22 of this solution can be set with matching bits. By adjusting the matching value on the motherboard terminal, the operating frequency band of the antenna can be flexibly adjusted. Therefore, the antenna structure 100 of this solution can be used as a standardized template and transplanted into products of different types and sizes, which helps to improve the reuse rate of the antenna structure 100.

[0048] 4. Simple manufacturing process: The material of the antenna structure 100 of this invention is not limited to conductive metal materials such as copper, and its manufacturing process is not limited to FPC antenna (RF antenna manufactured based on flexible printed circuit technology), LDS antenna (laser direct forming antenna), etc. The antenna material is readily available, the manufacturing process is simple, and the yield is high.

[0049] 5. Low cost: The antenna structure in this solution has a small footprint and small size, resulting in low cost. It is also easy to assemble, which helps to reduce production costs.

[0050] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An antenna structure, characterized in that, The antenna structure includes: Power supply unit; Ground feeder unit; A resonant unit is connected to the power supply unit and the ground supply unit. The resonant unit includes a first branch, a second branch, and a third branch. The first branch, the second branch, and the third branch are interconnected and disposed on the same plane. There is a coupling gap between the first branch, the second branch, and the third branch.

2. The antenna structure as described in claim 1, characterized in that, The first spur includes a first resonant segment, a second resonant segment, and a third resonant segment. The end of the first resonant segment away from the second and third resonant segments is connected to the second and third spurs. The extension direction of the first resonant segment is parallel to the extension direction of the third spur.

3. The antenna structure as described in claim 2, characterized in that, The first branch is T-shaped, and the second and third resonant segments are connected to the two ends of the first resonant segment. The second resonant segment extends along the width direction of the third branch.

4. The antenna structure as described in claim 2, characterized in that, The extension direction of the second branch is parallel to the extension direction of the third resonant segment.

5. The antenna structure as described in any one of claims 2 to 4, characterized in that, The second branch includes a fourth resonant segment, a fifth resonant segment, and a sixth resonant segment, wherein the fifth resonant segment and the sixth resonant segment are connected to the side of the fourth resonant segment away from the power supply unit.

6. The antenna structure as described in claim 5, characterized in that, The width of the fifth resonant segment is smaller than the width of the sixth resonant segment.

7. The antenna structure as described in claim 5, characterized in that, The power supply unit and the ground supply unit are spaced apart along the extension direction of the first resonant segment.

8. The antenna structure as described in claim 7, characterized in that, The power supply unit includes a first bent section and a power supply pin. The power supply pin is spaced apart from the resonant unit along the thickness direction. The first bent section extends and bends along the thickness direction of the resonant unit. The power supply pin is connected to the end of the first bent section away from the resonant unit. The grounding unit includes a second bending section and a grounding foot. The grounding foot is spaced apart from the resonant unit along the thickness direction. The second bending section extends and bends along the thickness direction of the resonant unit. The grounding foot is connected to the end of the second bending section away from the resonant unit.

9. The antenna structure as described in claim 8, characterized in that, The surfaces of both the power supply pin and the ground pin are gold-plated.

10. A mobile terminal, characterized in that, The antenna structure includes any one of claims 1 to 9.

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