Coupled slot antenna for an all-metal back cover tablet

Abstract

This utility model relates to a coupling slot antenna for an all-metal back cover tablet computer, including an FPC antenna, an antenna bracket, a coaxial cable, and a slot. The slot is disposed on the antenna bracket, and the FPC antenna is attached to the outer surface of the antenna bracket. One end of the coaxial cable is connected to the FPC antenna. The slot includes a first slot for tuning to a 5GHz frequency and a second slot for tuning to a 2.4GHz frequency. The first slot and the second slot are connected, and the length of the second slot is greater than that of the first slot. The welding point of the FPC antenna is located in the first slot. By using a coupling slot antenna design with long and short slots, the FPC antenna is stably grounded to the back cover metal through double-sided conductive foam. At the same time, the coaxial cable connection of the FPC antenna places the entire antenna in a relatively ideal environmental position, thereby achieving relatively good antenna efficiency in a fairly harsh antenna environment.

Description

Technical Field

[0001] This utility model relates to the field of wireless transmission technology, and in particular to a coupling slot antenna for an all-metal back cover tablet computer. Background Technology

[0002] In recent years, with the rapid development and iterative upgrades of smart products, various practical smart terminal devices have emerged, such as smart tablets, children's tablets, and learning machines. These devices generally feature 2.4G / 5G dual-band WiFi to meet modern network connectivity needs. As products continue to evolve, metal-cased tablet designs (IDs) are becoming increasingly popular to improve appearance and durability. However, traditional antenna designs have significant performance limitations in metal-cased ID designs, necessitating the development of new antenna solutions. Summary of the Invention

[0003] This invention provides a coupling slot antenna for an all-metal back cover tablet computer, aiming to solve the problem of poor performance of existing tablet computer back cover antennas.

[0004] This utility model provides a coupling slot antenna for an all-metal back cover tablet computer, including an FPC antenna, an antenna bracket, a coaxial cable, and a slot. The slot is disposed on the antenna bracket, the FPC antenna is attached to the outer surface of the antenna bracket, one end of the coaxial cable is connected to the FPC antenna, and the slot includes a first slot portion for tuning a 5GHz frequency and a second slot portion for tuning a 2.4GHz frequency. The first slot portion and the second slot portion are connected, the length of the second slot portion is greater than that of the first slot portion, and the welding point of the FPC antenna is located in the first slot portion.

[0005] As a further improvement of this utility model, one end of the coaxial cable is connected to the FPC antenna within the first slot.

[0006] As a further improvement of this utility model, the other end of the coaxial cable is provided with a connector, which is connected to a female connector provided on the motherboard of the tablet computer.

[0007] As a further improvement of this utility model, the FPC antenna is provided with a shielding layer pad, and the shielding layer pad is connected to the shielding layer of the FPC antenna.

[0008] As a further improvement of this utility model, the shielding layer pad is disposed in the first slotted portion, and the coaxial line is welded to the shielding layer pad.

[0009] As a further improvement of this utility model, the FPC antenna is provided with a wire core pad, which is connected to the wire core of the FPC antenna.

[0010] As a further improvement of this utility model, the wire core pad is disposed in the first slotted portion, and one end of the coaxial line is welded to the wire core pad.

[0011] As a further improvement of this utility model, it also includes double-sided conductive foam, which is adhered to the exposed gold-plated position of the FPC antenna.

[0012] As a further improvement of this utility model, the position of the slot corresponds to the position of the gap in the metal shell of the tablet computer.

[0013] As a further improvement of this utility model, the FPC antenna is provided with a clearance hole, the position of which corresponds to the position of the second slot.

[0014] The beneficial effects of this utility model are: by using a coupling slot antenna design, a coupling slot with long and short slots is designed, and the FPC antenna is stably grounded to the metal of the back cover by double-sided conductive foam. At the same time, by connecting the FPC antenna with a coaxial cable, the entire antenna is designed in a relatively ideal environmental position, thereby achieving relatively good antenna efficiency in a rather harsh antenna environment. Attached Figure Description

[0015] Figure 1 This is a front sectional view of the antenna of this utility model; Figure 2 This is a cross-sectional view of the back of the antenna of this utility model.

[0016] Reference numerals: 1-FPC antenna, 2-antenna bracket, 3-coaxial cable, 4-connector, 5-first slot, 6-second slot, 7-shielding pad, 8-core pad. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component.

[0018] This utility model provides a coupling slot antenna for an all-metal back cover tablet computer, including an FPC antenna 1, an antenna bracket 2, a coaxial cable 3, and a slot. The slot is disposed on the antenna bracket 2, and the FPC antenna 1 is attached to the outer surface of the antenna bracket 2. One end of the coaxial cable 3 is connected to the FPC antenna 1. The slot includes a first slot portion 5 for tuning a 5GHz frequency and a second slot portion 6 for tuning a 2.4GHz frequency. The first slot portion 5 and the second slot portion 6 are connected. The length of the second slot portion 6 is greater than that of the first slot portion 5. The welding point of the FPC antenna 1 is located in the first slot portion 5.

[0019] The antenna design incorporates two appropriately sized slots: a longer second slot (6) with a length of 31.9 mm, used for tuning to a 2.4 GHz frequency; and a shorter first slot (5) with a length of 9.6 mm, used for tuning to a 5 GHz frequency. According to the formula that the speed of light equals the wavelength multiplied by the frequency, the length of the slot corresponds to the resonant frequency; the longer the slot, the lower the resonant frequency. Frequency tuning is achieved by adjusting the slot length to a suitable size.

[0020] In one embodiment of this utility model, one end of the coaxial cable 3 is connected to the FPC antenna 1 within the first slotted portion 5.

[0021] In another embodiment of this utility model, a connecting seat 4 is provided at the other end of the coaxial cable 3, and the connecting seat 4 is connected to a female connector provided on the motherboard of the tablet computer. The design between the connecting seat 4 and the matching female connector facilitates rapid product assembly and improves production efficiency. In this embodiment, the slot position corresponds to the gap position of the metal casing, so that antenna adjustment can be achieved through the gap in the metal casing.

[0022] In another embodiment of the present invention, the FPC antenna 1 is provided with a shielding layer pad 7, which is connected to the shielding layer of the FPC antenna 1.

[0023] In another embodiment of this utility model, the shielding layer pad 7 is disposed in the first slotted portion 5, and the coaxial line 3 is welded to the shielding layer pad 7.

[0024] In another embodiment of the present invention, the FPC antenna 1 is provided with a wire core pad 8, which is connected to the wire core of the FPC antenna 1.

[0025] In another embodiment of this utility model, the wire core pad 8 is disposed in the first slotted portion 5, and one end of the coaxial line 3 is welded to the wire core pad 8.

[0026] In another embodiment of this utility model, double-sided conductive foam is also included, which is adhered to the exposed gold-plated portion of the FPC antenna 1. This foam is used for grounding to the motherboard or the metal hardware back cover.

[0027] In another embodiment of this utility model, the position of the slot corresponds to the position of the gap in the metal casing of the tablet computer.

[0028] In another embodiment of this utility model, the FPC antenna 1 is provided with a clearance hole, the position of which corresponds to the position of the second slotted portion 6. This facilitates providing clearance space for the installation and connection of the coaxial cable 3.

[0029] This utility model provides a coupling slot antenna for an all-metal back cover tablet computer. This antenna, while accommodating current metal ID design schemes, also boasts high antenna performance parameters in harsh environments. Furthermore, it is compatible with the general design of this type of product, featuring simple assembly, strong adaptability, good stability, low cost, and excellent performance. In terms of materials, considering ease of assembly and existing component layout, the antenna adopts a coaxial cable 3 plus FPC design, resulting in good stability and reliability. The antenna is attached to the bracket below the screen. The FPC antenna 1 has a length of 55.7mm, the distance from the edge of the coaxial cable 3 welding signal point is 16.05mm, and the width of the central slot is 2.5mm.

[0030] The coaxial cable 3 and the FPC antenna 1 have two solder points: one is soldered to the shielding layer pad 7 for connection to the shielding layer of the FPC antenna 1, and the other is soldered to the wire core pad 8, connecting the coaxial cable 3 and the wire core of the FPC antenna 1. This soldering method reduces the delay between the two, improving the user experience. Antennas using FPC technology place greater emphasis on their sensing capabilities.

[0031] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A coupled slot antenna for a full-metal back cover tablet computer, characterized in that, The device includes an FPC antenna, an antenna bracket, a coaxial cable, and a slot. The slot is disposed on the antenna bracket, and the FPC antenna is attached to the outer surface of the antenna bracket. One end of the coaxial cable is connected to the FPC antenna. The slot includes a first slot for tuning a 5GHz frequency and a second slot for tuning a 2.4GHz frequency. The first slot and the second slot are connected, and the length of the second slot is greater than that of the first slot. The welding point of the FPC antenna is located in the first slot.

2. The coupled slot antenna for a full-metal back cover tablet computer of claim 1, wherein, One end of the coaxial cable is connected to the FPC antenna within the first slot.

3. The coupled slot antenna for a full-metal back cover tablet computer of claim 1, wherein, The other end of the coaxial cable is provided with a connector, which is connected to a female connector provided on the motherboard of the tablet computer.

4. The coupled slot antenna for a full-metal back cover tablet computer of claim 1, wherein, The FPC antenna has a shielding pad, which is connected to the shielding layer of the FPC antenna.

5. The coupled slot antenna for a full-metal back cover tablet computer of claim 4, wherein, The shielding layer pad is disposed in the first slotted portion, and the coaxial line is welded to the shielding layer pad.

6. The coupled slot antenna for a full-metal back cover tablet computer of claim 1, wherein, The FPC antenna has a wire core pad, which is connected to the wire core of the FPC antenna.

7. The coupled slot antenna of an all-metal back cover tablet computer of claim 6, wherein, The wire core pad is disposed in the first slotted portion, and one end of the coaxial cable is welded to the wire core pad.

8. The coupled slot antenna for a full-metal back cover tablet computer of claim 1, wherein, It also includes double-sided conductive foam, which is attached to the exposed gold-plated portion of the FPC antenna.

9. The coupled slot antenna for a full-metal back cover tablet computer of claim 1, wherein, The location of the slot corresponds to the location of the gap in the metal casing of the tablet computer.

10. The coupled slot antenna for a full-metal back cover tablet computer of claim 1, wherein, The FPC antenna is provided with a clearance hole, the position of which corresponds to the position of the second slot.

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