Antenna assembly and mobile terminal

Abstract

According to the antenna assembly and the mobile terminal provided by the utility model, the antenna assembly comprises a first coil wire, a second coil wire and a third coil wire, and the first coil wire and the second coil wire are respectively located on a first plane and a second plane. The third coil wire and the second coil wire are located on the second plane, the third coil wire is located in the second coil wire, and the second coil wire surrounds the third coil wire; after the first plane and the second plane are folded and overlapped, the vertical projection of the second coil wire covers the vertical projection of the first coil wire. The antenna assembly provided by the utility model not only can expand the area of short-distance wireless communication of the mobile terminal, but also can effectively utilize the internal space of the mobile terminal.

Description

Technical Field

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

[0002] Near-field communication (NFC) technology has become increasingly widely used in recent years. NFC is a short-range wireless communication technology that allows two devices to exchange data without physical contact. Based on radio frequency identification (RFID) technology, NFC operates at a frequency of 13.56 MHz and typically has a communication distance of only a few centimeters. As NFC technology matures, encryption devices with NFC functionality require NFC chips and NFC antennas.

[0003] Currently, due to the diversification of mobile phone technologies among various manufacturers, small foldable screen phones have emerged. However, this folding feature limits the area of ​​other antennas, such as near-field communication antennas and ultra-high frequency antennas. As a result, when the phone is folded, the near-field communication antenna area becomes singular, thus affecting the normal use of the function.

[0004] In view of this, it is indeed necessary to propose an antenna assembly and a mobile terminal using the antenna assembly. Utility Model Content

[0005] The purpose of this invention is to provide an antenna assembly that not only expands the area of ​​short-range wireless communication for mobile terminals, but also effectively utilizes the internal space of mobile terminals.

[0006] To solve the above-mentioned technical problems, this utility model provides an antenna assembly, which includes a first coil trace, a second coil trace, and a third coil trace. The first coil trace and the second coil trace are respectively located on a first plane and a second plane. The third coil trace is located on the second plane and is inside the second coil trace. The second coil trace surrounds the third coil trace. After the first plane and the second plane are folded and overlapped, the vertical projection of the second coil trace covers the vertical projection of the first coil trace.

[0007] As a further improvement of this utility model, the first coil trace is configured as a first NFC coil, the second coil trace is configured as a second NFC coil, and the third coil trace is configured as a wireless charging coil.

[0008] As a further improvement of this utility model, the first coil trace is configured in a rectangular shape, the second coil trace is configured in a rectangular shape, and the third coil trace is configured in a circular shape.

[0009] As a further improvement of this utility model, the number of turns of the first coil wire ranges from 3 to 4, the number of turns of the second coil wire ranges from 5 to 6, and the number of turns of the third coil wire ranges from 8 to 9.

[0010] As a further improvement of this utility model, the antenna assembly further includes a chip unit and a matching circuit unit. The chip unit is electrically connected to the first coil trace and the second coil trace, and the chip unit is electrically connected to the matching circuit unit. The antenna signal is transmitted from the chip unit to the matching circuit unit.

[0011] As a further improvement of this utility model, the matching circuit unit includes a first matching circuit unit and a second matching circuit unit, wherein the first matching circuit is electrically connected to the first coil trace, and the second matching circuit is electrically connected to the second coil trace.

[0012] As a further improvement of this utility model, the chip unit includes a first chip end and a second chip end, the first chip end being electrically connected to the first coil trace, and the second chip end being electrically connected to the second coil trace.

[0013] As a further improvement of this utility model, one end of the first coil trace is connected to the first matching circuit, and the other end of the first coil trace is grounded to form a first circuit.

[0014] As a further improvement of this utility model, one end of the second coil trace is connected to the second matching circuit, and the other end of the second coil trace is grounded to form a second circuit.

[0015] The purpose of this invention is to provide a mobile terminal that can better utilize the aforementioned antenna components.

[0016] To solve the above-mentioned technical problems, the present invention provides a mobile terminal, which includes the aforementioned antenna assembly.

[0017] This invention provides an antenna assembly and a mobile terminal. The antenna assembly includes a first coil trace, a second coil trace, and a third coil trace. The first coil trace and the second coil trace are located on a first plane and a second plane, respectively. The third coil trace is located on the second plane and is situated within the second coil trace, with the second coil trace surrounding it. When the first plane and the second plane are folded and overlapped, the vertical projection of the second coil trace covers the vertical projection of the first coil trace. This antenna assembly not only expands the area for short-range wireless communication in the mobile terminal but also effectively utilizes the internal space of the mobile terminal. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the connection between the first coil wiring and the first matching circuit in this utility model.

[0020] Figure 3 This is a schematic diagram of the connection between the second coil wiring and the second matching circuit in this utility model.

[0021] The labels in the attached figures are explained as follows:

[0022] First coil trace 1, second coil trace 2, third coil trace 3, first matching circuit 4, second matching circuit 5. Detailed Implementation

[0023] The antenna assembly and mobile terminal 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 proportions, 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 figures may emphasize different aspects and sometimes use different proportions.

[0024] Near Field Communication (NFC) technology has become increasingly widespread in recent years. It's a short-range wireless communication technology that allows two devices to exchange data without contact. NFC technology is based on Radio Frequency Identification (RFID) and operates at a frequency of 13.56MHz, with a communication distance typically within a few centimeters. Currently, encryption devices for NFC functionality require a NFC chip and a NFC antenna, which is a type of near-field coupled antenna. Due to the diversification of mobile phone models from various manufacturers, small foldable phones have emerged, allowing the phone to be folded. For example, in current small foldable phones, the NFC antenna and wireless charging coil are located in the battery compartment. While this makes the phone convenient to carry when folded, it limits the area of ​​other antennas, including the NFC antenna or UHF antenna. This means that when the phone is folded, only the battery compartment side can be used for regular card swiping, while the side with the camera lacks NFC functionality. This results in a single NFC swiping area, affecting the normal use of the function.

[0025] This invention provides an antenna assembly comprising a first coil trace 1, a second coil trace 2, and a third coil trace 3. The first coil trace 1 and the second coil trace 2 are respectively located on a first plane and a second plane. The third coil trace 3 and the second coil trace 2 are located on the second plane, with the third coil trace 3 located within the second coil trace 2. The second coil trace 2 surrounds the third coil trace 3. After the first plane and the second plane are folded and overlapped, the vertical projection of the second coil trace 2 covers the vertical projection of the first coil trace 1.

[0026] This design of the antenna assembly not only expands the area for short-range wireless communication of the mobile terminal, but also effectively utilizes the internal space of the mobile terminal.

[0027] Furthermore, the first coil trace 1 is configured as a first NFC coil, the second coil trace 2 is configured as a second NFC coil, and the third coil trace 3 is configured as a wireless charging coil. Preferably, the first coil trace 1 is configured in a rectangular shape, the second coil trace 2 is configured in a rectangular shape, and the third coil trace 3 is configured in a circular shape. This arrangement can increase the radiation area of ​​near-field communication. That is to say, previous foldable screen phones limited the antenna area of ​​near-field communication. Therefore, the near-field communication of this invention can be divided into two areas: the mobile terminal is a foldable device, the coil of the first near-field communication is located in the upper folded area, and the coil of the second near-field communication is located in the lower folded area.

[0028] Preferably, the number of turns of the first coil trace 1 ranges from 3 to 4, the number of turns of the second coil trace 2 ranges from 5 to 6, and the number of turns of the third coil trace 3 ranges from 8 to 9. This arrangement allows the mobile terminal to perform card swiping functions on both sides simultaneously when folded. Both the second coil trace 2 and the third coil trace 3 are located in the battery compartment of the mobile terminal, and their operation does not interfere with each other.

[0029] Furthermore, the antenna assembly further includes a chip unit and a matching circuit unit. The chip unit is electrically connected to the first coil trace 1 and the second coil trace 2, and the chip unit is electrically connected to the matching circuit unit; the antenna signal is transmitted from the chip unit to the matching circuit unit. Further, the matching circuit unit includes a first matching circuit unit 4 and a second matching circuit unit 5. The first matching circuit 4 is electrically connected to the first coil trace 1, and the second matching circuit 5 is electrically connected to the second coil trace 2. The chip unit includes a first chip terminal and a second chip terminal. The first chip terminal is electrically connected to the first coil trace 1, and the second chip terminal is electrically connected to the second coil trace 2.

[0030] Preferably, one end of the first coil trace 1 is connected to the first matching circuit 4, and the other end of the first coil trace 1 is grounded to form a first loop. One end of the second coil trace 2 is connected to the second matching circuit 5, and the other end of the second coil trace 2 is grounded to form a second loop.

[0031] In other words, the first matching circuit 4 and the second matching circuit 5 adopt a dual single-ended design. Both circuits at the shunt point can ensure the normal reception and transmission of their respective antennas. In the past, single-ended or dual-ended matching circuits could only maintain the operation of one coil trace, while the antenna assembly of this utility model can realize the operation of two or more coil traces.

[0032] In summary, this invention provides an antenna assembly and a mobile terminal. The antenna assembly includes a first coil trace 1, a second coil trace 2, and a third coil trace 3. The first coil trace 1 and the second coil trace 2 are located on a first plane and a second plane, respectively. The third coil trace 3 and the second coil trace 2 are located on the second plane, with the third coil trace 3 situated within the second coil trace 2, and the second coil trace 2 surrounding the third coil trace 3. When the first plane and the second plane are folded and overlapped, the vertical projection of the second coil trace 2 covers the vertical projection of the first coil trace 1. This antenna assembly not only expands the area for short-range wireless communication in the mobile terminal but also effectively utilizes the internal space of the mobile terminal.

[0033] 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.

[0034] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An antenna assembly, characterized by: The antenna assembly comprises a first coil trace, a second coil trace and a third coil trace, the first coil trace and the second coil trace are located on a first plane and a second plane respectively, the third coil trace and the second coil trace are located on the second plane, the third coil trace is located in the second coil trace, and the second coil trace surrounds the third coil trace; after the first plane and the second plane are folded and overlapped, a vertical projection of the second coil trace covers a vertical projection of the first coil trace.

2. The antenna assembly of claim 1, wherein: The first coil trace is configured as a first NFC coil, the second coil trace is configured as a second NFC coil, and the third coil trace is configured as a wireless charging coil.

3. The antenna assembly of claim 2, wherein: The first coil trace is configured in a rectangular shape, the second coil trace is configured in a rectangular shape, and the third coil trace is configured in a circular shape.

4. The antenna assembly of claim 3, wherein: The number of windings of the first coil trace ranges from 3 to 4, the number of windings of the second coil trace ranges from 5 to 6, and the number of windings of the third coil trace ranges from 8 to 9.

5. The antenna assembly of claim 4, wherein: The antenna assembly further comprises a chip unit and a matching circuit unit, the chip unit is electrically connected with the first coil trace and the second coil trace, and the chip unit is electrically connected with the matching circuit unit; antenna signals are transmitted from the chip unit to the matching circuit unit.

6. The antenna assembly of claim 5, wherein: The matching circuit unit comprises a first matching circuit unit and a second matching circuit unit, the first matching circuit is electrically connected with the first coil trace, and the second matching circuit is electrically connected with the second coil trace.

7. The antenna assembly of claim 6, wherein: The chip unit comprises a first chip end and a second chip end, the first chip end is electrically connected with the first coil trace, and the second chip end is electrically connected with the second coil trace.

8. The antenna assembly of claim 7, wherein: One end of the first coil trace is connected with the first matching circuit, and the other end of the first coil trace is grounded to form a first loop.

9. The antenna assembly of claim 8, wherein: One end of the second coil trace is connected with the second matching circuit, and the other end of the second coil trace is grounded to form a second loop.

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

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