Antenna device and mobile payment terminal

Abstract

This application relates to an antenna device and a mobile payment terminal. Among them, the antenna device includes: a substrate; and a first antenna unit disposed on the substrate, the first antenna unit includes a first branch and a second branch, the first branch and the second branch are disposed at intervals; and the first branch is disposed on the first side of the second branch, both the first branch and the second branch are used to access a first feeding signal; a second antenna unit disposed on the substrate, the second antenna unit is disposed on the second side of the second branch, the first side and the second side are adjacent sides, and the second antenna unit is used to access a second feeding signal, realizing a compact structure design. Compared with the antenna winding method adopted in the traditional technology, it has a small volume and is suitable for miniaturized terminals. Moreover, the antenna device provided by the embodiments of this application can be used for the resonance of two wireless network signals and can meet the communication requirements in different application scenarios.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and in particular, to an antenna device and a mobile payment terminal. Background Art

[0002] The statements herein only provide background information related to the present application and do not necessarily constitute prior art.

[0003] With the development of communication technologies, mobile payment has gradually replaced cash transactions, greatly facilitating people's lives. Most common current mobile payment terminals belong to large payment terminals. With the demand for compact designs of various terminals, it is necessary to provide an antenna suitable for small terminals. On the premise of not affecting parameters such as the radiation performance of the antenna structure, a compact design of the terminal is achieved. Summary of the Invention

[0004] Based on this, in view of the problem of the need to provide an antenna structure suitable for miniaturized terminals, especially mobile payment terminals, it is necessary to provide an antenna device and a mobile payment terminal.

[0005] An embodiment of the present invention provides an antenna device, including:

[0006] A substrate; and

[0007] A first antenna unit disposed on the substrate, the first antenna unit including a first branch and a second branch, the first branch and the second branch being spaced apart; and the first branch being disposed on a first side of the second branch, both the first branch and the second branch being configured to receive a first feeding signal;

[0008] A second antenna unit disposed on the substrate, the second antenna unit being disposed on a second side of the second branch, the first side and the second side being adjacent sides, and the second antenna unit being configured to receive a second feeding signal.

[0009] The antenna device provided by the embodiment of the present application, by separately providing the first antenna unit and the second antenna unit, and dividing the first antenna unit into a first branch and a second branch, further disposing the first branch and the second antenna unit on the first side and the second side of the second branch respectively, the first branch, the second branch and the second antenna unit are integrally distributed in a triangular shape, realizing a compact structure design. Compared with the antenna winding method adopted in the traditional technology, it has a small volume and is suitable for miniaturized terminals. Moreover, the antenna device provided by the embodiment of the present application can be used for the resonance of two wireless network signals and can meet the communication requirements in different application scenarios.

[0010] In one embodiment, the first branch includes a first signal feeding arm, a first radiation arm, a second radiation arm, and a third radiation arm;

[0011] The first signal feeding arm is provided with a first feeding point for accessing a first feeding signal;

[0012] The first radiation arm and the third radiation arm are arranged on the same side of the first signal feeding arm, and the first radiation arm and the second radiation arm are respectively arranged on both sides of the first signal feeding arm.

[0013] In one embodiment, the first radiation arm winds clockwise to form a receiving space;

[0014] The second radiation arm winds counterclockwise;

[0015] The third radiation arm winds counterclockwise in the receiving space.

[0016] In one embodiment, the second branch includes a second signal feeding arm and a fourth radiation arm. The second signal feeding arm is provided with a second feeding point for accessing the first feeding signal.

[0017] In one embodiment, the second antenna unit includes a third signal feeding arm and a fifth radiation arm. The third signal feeding arm is provided with a third feeding point for accessing a second feeding signal.

[0018] In one embodiment, the fifth radiation arm is arranged counterclockwise, and the fifth radiation arm winds to form a plurality of hollowed-out portions.

[0019] In one embodiment, the fifth radiation arm is provided with a fourth feeding point for accessing the second feeding signal.

[0020] In one embodiment, the first antenna unit is used for the resonance of the first wireless network signal, and the second antenna unit is used for the resonance of the second wireless network signal.

[0021] In one embodiment, the first wireless network signal is a 4G wireless network signal, and the second wireless network signal is a WiFi wireless network signal.

[0022] A mobile payment terminal includes a main body and a cover body. The main body is provided with a groove. When the cover body is covered on the main body, the groove is closed by the cover body to form a chamber, and the antenna device according to any one of claims 1-9 is arranged in the chamber;

[0023] The cover body is provided with a first area that matches the shape of the substrate of the antenna device. The first area of the cover body is made of a material that allows the electromagnetic wave emitted by the antenna device to pass through, and the rest of the cover body is made of a metal material. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the antenna device in one embodiment;

[0025] Figure 2 Schematic diagram of the structure of the antenna device in another embodiment;

[0026] Figure 3a Echo loss schematic diagram when the first antenna unit is in resonance for 4G wireless network signals in an embodiment;

[0027] Figure 3b Smith chart schematic diagram when the first antenna unit is in resonance for 4G wireless network signals in an embodiment;

[0028] Figure 3c Standing wave ratio diagram of the first antenna unit when the first antenna unit is in resonance for 4G wireless network signals in an embodiment;

[0029] Figure 3d Radiation schematic diagram at different frequencies when theta = 90° when the first antenna unit is in resonance for 4G wireless network signals in an embodiment;

[0030] Figure 3e Radiation schematic diagram at different frequencies when phi = 0° when the first antenna unit is in resonance for 4G wireless network signals in an embodiment;

[0031] Figure 3f Radiation schematic diagram at different frequencies when phi = 90° when the first antenna unit is in resonance for 4G wireless network signals in an embodiment;

[0032] Figure 4a Echo loss schematic diagram of the second antenna unit when the second antenna unit is in resonance for WiFi wireless network signals in an embodiment;

[0033] Figure 4b Smith chart schematic diagram of the second antenna unit when the second antenna unit is in resonance for WiFi wireless network signals in an embodiment;

[0034] Figure 4c Standing wave ratio diagram of the second antenna unit when the second antenna unit is in resonance for WiFi wireless network signals in an embodiment;

[0035] Figure 5a Radiation schematic diagram at different frequencies when theta = 90° when the second antenna unit is in resonance for 2.4G WiFi wireless network signals in an embodiment;

[0036] Figure 5b Radiation schematic diagram at different frequencies when phi = 0° when the second antenna unit is in resonance for 2.4G WiFi wireless network signals in an embodiment;

[0037] Figure 5c Schematic diagram of radiation at different frequencies when phi = 90° during resonance of the second antenna unit for 2.4G WiFi wireless network signals in an embodiment;

[0038] Figure 6a Schematic diagram of radiation at different frequencies when theta = 90° during resonance of the second antenna unit for 5G WiFi wireless network signals in an embodiment;

[0039] Figure 6b Schematic diagram of radiation at different frequencies when phi = 0° during resonance of the second antenna unit for 5G WiFi wireless network signals in an embodiment;

[0040] Figure 6c Schematic diagram of radiation at different frequencies when phi = 90° during resonance of the second antenna unit for 5G WiFi wireless network signals in an embodiment;

[0041] Figure 7 Internal structure diagram of a mobile payment terminal in an embodiment. Detailed implementation manners

[0042] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0043] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to and integrated with the other element, or there may be an intermediate element present at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0045] An embodiment of the present invention provides an antenna device 100, including: a substrate 1; and a first antenna unit 2 disposed on the substrate 1, the first antenna unit 2 including a first branch 21 and a second branch 22, the first branch 21 and the second branch 22 being spaced apart; and the second branch 22 is disposed on a first side of the first branch 21, and both the first branch 21 and the second branch 22 are configured to access a first feed signal a; a second antenna unit 3 disposed on the substrate 1, the second antenna unit 3 being disposed on a second side of the first branch 21, the first side and the second side being adjacent sides, and the second antenna unit 3 being configured to access a second feed signal b.

[0046] Wherein, the substrate 1 can be an FPC (Flexible Printed Circuit) or other types of circuit boards. Both the first antenna unit 2 and the second antenna unit 3 are composed of metal sheets, and the parameter requirements when the antenna emits electromagnetic waves are met through the metal sheet layout and winding methods.

[0047] Specifically, for the antenna device 100 provided in this application, by integrally disposing the first antenna unit 2 and the second antenna unit 3 on the substrate 1, and by separating the first antenna unit 2 into two parts, namely the first branch 21 and the second branch 22, the second antenna unit 3 and the first branch 21 are respectively located on the first side and the second side of the second branch 22, and the first side and the second side are adjacent sides, so that the first antenna unit 2 and the second antenna unit 3 are closely arranged, the required area of the substrate 1 is small, the overall volume of the antenna device 100 is small, and it can be applied to small terminals. In addition, the antenna device 100 provided in the embodiment of this application can be used for the resonance of two wireless network signals, and can meet the communication requirements in different application scenarios.

[0048] In one embodiment, the first branch 21 includes a first signal feeding arm 211, a first radiation arm 212, a second radiation arm 213, and a third radiation arm 214; a first feeding point D1 is provided on the first signal feeding arm 211, and the first feeding point D1 is configured to access the first feed signal a; the first radiation arm 212 and the third radiation arm 214 are disposed on the same side of the first signal feeding arm 211, and the first radiation arm 212 and the second radiation arm 213 are respectively disposed on both sides of the first signal feeding arm 211.

[0049] Specifically, the first signal feeding arm 211 can extend along the first direction F1, and the first radiation arm 212 can extend along the second direction F2 perpendicular to the first direction F1 and then extend in the opposite direction of the first direction F1. The second radiation arm 213 can extend in the opposite direction of the second direction F2 for a certain length and then extend in the opposite direction of the first direction F1, reducing the width of the metal sheet extension in the second direction F2 and the space occupied by the antenna structure in the first direction F1. The third radiation arm 214 can extend along the second direction F2 for a certain length, then extend along the first direction F1 for a certain length, and then extend along the opposite direction of the second direction F2 for a certain length to form a barb structure. The third radiation arm 214 is distributed in the accommodating space surrounded by the first radiation arm 212, so that the first radiation arm 212 and the third radiation arm 214 form a compact structure, reducing the overall installation space of the first antenna unit 2. Among them, the part where the first radiation arm 212 extends along the second direction F2 and the part where the second radiation arm 213 extends along the opposite direction of the second direction F2 can be located on the same straight line. The width of the part where the second radiation arm 213 extends along the opposite direction of the second direction F2 can be greater than the width of the part where the second radiation arm 213 extends along the opposite direction of the first direction F1. The projected area of the second radiation arm 213 on the first radiation arm 212 along the second direction F2 is not zero.

[0050] In one embodiment, a strengthening area 4 is provided at the spaced position between the first branch 21 and the second branch 22. The strengthening area 4 is provided with metal sheets or grooves to increase the coupling effect between the first branch 21 and the second branch 22.

[0051] As Figure 1 and Figure 2 shown, a metal sheet or a groove is provided at the spaced position between the first branch 21 and the second branch 22 to increase the coupling effect between the first branch 21 and the second branch 22. The projected area of the strengthening area 4 on the third radiation arm 214 along the first direction F1 is not zero, and the projected area of the strengthening area 4 on the second antenna unit 3 along the opposite direction of the first direction F1 is not zero.

[0052] In one embodiment, the first radiation arm 212 is wound clockwise to form an accommodating space; the second radiation arm 213 is wound counterclockwise; the third radiation arm 214 is wound counterclockwise in the accommodating space.

[0053] As Figure 1 and Figure 2As shown, the first radiating arm 212 can form a receiving space by winding clockwise. The second radiating arm 213 is wound counterclockwise on the other side of the first signal feeding arm 211. The third radiating arm 214 is wound counterclockwise within the receiving space formed by the first radiating arm 212. The three radiating arms are compactly arranged, and there is a gap between the first radiating arm 212 and the third radiating arm 214 without direct contact. Besides forming a good radiation layout, a smaller antenna layout space is used.

[0054] In one embodiment, the second branch 22 includes a second signal feeding arm 221 and a fourth radiating arm 222. A second feeding point D2 is provided on the second signal feeding arm 221, and the second feeding point D2 is used to access the first feeding signal a.

[0055] Specifically, the second signal feeding arm 221 can extend along the first direction F1. The fourth radiating arm 222 can be connected to the second signal feeding arm 221 and continue to extend along the first direction F1 on the basis of the second signal feeding arm 221. The width of the fourth radiating arm 222 is smaller than that of the second signal feeding arm 221. Both the second branch 22 and the second branch 22 are provided with feeding points for accessing the first feeding signal a. For example, when the first antenna unit 2 is used for the resonance of 4G wireless network signals, its antenna characteristic parameters are as shown in Figure 3.

[0056] In one embodiment, the second antenna unit 3 includes a third signal feeding arm 31 and a fifth radiating arm 32. A third feeding point D3 is provided on the third signal feeding arm 31, and the third feeding point D3 is used to access the second feeding signal b.

[0057] Specifically, as Figure 1 and Figure 2 shown, the third signal feeding arm 31 can extend along the first direction F1. The fifth radiating arm 32 first extends along the first direction F1 for a section from the connection with the third signal feeding arm 31, then extends along the second direction F2 for a section, then extends along the first direction F1 for a section and then extends along the opposite direction of the second direction F2 for a section, and finally extends along the opposite direction of the first direction F1 for a section. A serpentine hollow part is formed between the fifth radiating arm 32 and the third signal feeding arm 31. The third feeding point D3 on the third signal feeding arm 31 is used to access the second feeding signal b. For example, it can be connected to the second cable 6.

[0058] In one embodiment, the fifth radiating arm 32 is arranged counterclockwise, and the fifth radiating arm 32 is wound to form a plurality of hollow parts.

[0059] In one embodiment, a fourth feeding point D4 is provided on the fifth radiating arm 32, and the fourth feeding point D4 is used to access the second feeding signal b.

[0060] As Figure 1 andFigure 2 As shown, a fourth feeding point D4 is provided on the fifth radiation arm 32. This fourth feeding point D4 is also used to access the second feeding signal b. When the connection between a certain feeding point on the second antenna unit 3 and the second cable 6 becomes loose, the other feeding points can still ensure the normal transmission of the second feeding signal b, without affecting the use of the antenna, thereby improving the reliability of the antenna device 100.

[0061] In one embodiment, the first antenna unit 2 is used for the resonance of the first wireless network signal, and the second antenna unit 3 is used for the resonance of the second wireless network signal.

[0062] As Figure 1 and Figure 2 shown, the first antenna unit 2 and the second antenna unit 3 are respectively used for the resonance of the same or different wireless network signals. For example, the first antenna unit 2 can be used for the resonance of a 4G wireless network signal or a WiFi wireless network signal, and the second antenna unit 3 can be used for the resonance of a 4G wireless network signal or a WiFi wireless network signal.

[0063] In one embodiment, the first wireless network signal is a 4G wireless network signal, and the second wireless network signal is a WiFi wireless network signal.

[0064] As shown in FIGS. 3 - 6, the first wireless network signal can be a 4G wireless network signal, and the second wireless network signal is a WiFi wireless network signal. The parameter performance of the first antenna unit 2 in the antenna device 100 provided by the embodiments of the present application when used for the resonance of the 4G wireless network signal is shown in each sub - figure of FIG. 3. The parameter performance of the second antenna unit 3 when used for the resonance of the 2.4G WiFi wireless network signal is shown in FIGS. 4 and 5. The parameter performance of the second antenna unit 3 when used for the resonance of the 5G WiFi wireless network signal is shown in FIGS. 4 and 6. It can be seen from FIGS. 3 - 6 that the antenna device 100 provided by the embodiments of the present application can meet the performance parameter requirements of 4G and WiFi antennas with different frequencies.

[0065] A mobile payment terminal includes a main body and a cover. The main body is provided with a groove 200. When the cover is covered on the main body, the groove 200 is closed by the cover to form a chamber, and the above - mentioned antenna device 100 is arranged in the chamber; a first area matching the shape of the substrate 1 of the antenna device 100 is provided on the cover. The first area of the cover is made of a material through which the electromagnetic wave emitted by the antenna device 100 can pass, and the rest of the cover is made of a metal material.

[0066] As Figure 1 、 Figure 2As shown in [Figure 6], the cover on the mobile payment terminal, for example, the rear cover, is provided with a first area thereon. This first area is used for electromagnetic waves. The rest of the cover can be made of a metal material to play a shielding role and can ensure the strength of the mobile payment terminal, making it not easily damaged. The substrate 1 matches the shape of this first area so that the electromagnetic waves emitted by the antenna device 100 can be concentrated and diverge from the first area. The mobile payment terminal may further include a camera device 800, etc., for collecting two-dimensional code information or face information to achieve payment. Among them, the mobile payment terminal may further include a first cable 5 and a second cable 6. The first cable 5 is used to output a first feeding signal a to the first antenna unit 2, and the second cable 6 is used to output a second feeding signal b to the second antenna unit 3. The first cable 5 and the second cable 6 can use coaxial cables with a diameter of 1.13 mm.

[0067] Optionally, the shape of the substrate 1 can be circular, and the diameter of the substrate 1 can be 64.6 ± 0.15 mm.

[0068] In one embodiment, the mobile payment terminal further includes a conductive cloth. The conductive cloth is disposed on the substrate 1 and is respectively connected to the grounding points provided on the second branch 22 and the grounding points provided on the second antenna unit 3, and the conductive cloth is used for grounding.

[0069] Among them, the ground refers to the ground of the mobile payment terminal. The conductive cloth can be selected as a conductive cloth with a length of 42.79 ± 0.3 mm and a width of 20.22 ± 0.3 mm. Specifically, in order to ensure the normal power supply operation of the antenna, grounding points are provided on the first branch 21 of the antenna and the second antenna unit 3. The conductive cloth is connected to the grounding points and is connected to the ground of the mobile payment terminal battery or the ground of the mobile payment terminal screen to provide a ground signal for the antenna device 100.

[0070] In one embodiment, the mobile payment terminal further includes a first conductive foam 300. The first conductive foam 300 is disposed close to the inner wall of the groove 200 and is used for shielding the signal of the antenna device 100.

[0071] The first conductive foam 300 can be disposed in the groove 200 and on the inner wall of the groove 200 close to the side of the camera device 800, for shielding the signal of the antenna device 100 to avoid signal interference with other devices such as the camera device 800.

[0072] In one embodiment, a screen is disposed in the groove 200; a second conductive foam 400 and a third conductive foam 500 are disposed on the back of the screen; one end of the second conductive foam 400 is connected to the metal ground of the screen.

[0073] The other end of the second conductive foam 400 is connected to the first metal post 600; one end of the third conductive foam 500 is connected to the metal ground of the screen, and the other end of the third conductive foam 500 is connected to the second metal post 700; when the cover is covered on the body, both the first metal post 600 and the second metal post 700 are connected to the cover.

[0074] Specifically, as Figure 7 shown, the antenna device 100 can be disposed on the back of the screen of the mobile payment terminal, and the back of the screen can be connected to the cover through the second conductive foam 400 and the first metal post 600 in sequence, and the back of the screen can also be connected to the cover through the third conductive foam 500 and the second metal post 700 in sequence.

[0075] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered that the scope described in this specification is covered.

[0076] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. An antenna device, characterized in that, Comprising: A substrate; And A first antenna unit disposed on the substrate, the first antenna unit including a first branch and a second branch, the first branch and the second branch being spaced apart; and the first branch being disposed on a first side of the second branch, both the first branch and the second branch being configured to receive a first feed signal; A second antenna unit disposed on the substrate, the second antenna unit being disposed on a second side of the second branch, the first side and the second side being adjacent sides, and the second antenna unit being configured to receive a second feed signal; The first branch includes a first signal feeding arm, a first radiation arm, a second radiation arm, and a third radiation arm; The first signal feeding arm is provided with a first feed point for receiving the first feed signal; The first radiation arm and the third radiation arm are disposed on the same side of the first signal feeding arm, and the first radiation arm and the second radiation arm are respectively disposed on both sides of the first signal feeding arm; A reinforcing region is provided at an interval position between the first branch and the second branch, and the reinforcing region is provided with a metal sheet or a groove; The first signal feeding arm extends in a first direction, and the first radiation arm extends in a second direction perpendicular to the first direction and then extends in a direction opposite to the first direction; The second radiation arm extends in a direction opposite to the second direction for a certain distance and then extends in a direction opposite to the first direction; The third radiation arm extends in the second direction for a certain distance, then extends in the first direction for a certain distance, and then extends in a direction opposite to the second direction, forming a barb structure. The third radiation arm is distributed in a receiving space surrounded by the first radiation arm, so that the first radiation arm and the third radiation arm form a compact structure; Wherein, a portion of the first radiation arm extending in the second direction and a portion of the second radiation arm extending in a direction opposite to the second direction are located on the same straight line; The width of a portion of the second radiation arm extending in a direction opposite to the second direction is greater than the width of a portion of the second radiation arm extending in a direction opposite to the first direction, and the projected area of the second radiation arm on the first radiation arm in the second direction is non-zero.

2. The antenna device according to claim 1, characterized in that, The first radiation arm surrounds clockwise to form a receiving space; The second radiation arm is wound in a counterclockwise direction; The third radiation arm is wound in a direction opposite to the counterclockwise direction in the receiving space.

3. The antenna device according to claim 1 or 2, characterized in that, The second branch includes a second signal feeding arm and a fourth radiation arm. The second signal feeding arm is provided with a second feed point for receiving the first feed signal.

4. The antenna device according to claim 3, characterized in that, The second antenna unit includes a third signal feeding arm and a fifth radiation arm. The third signal feeding arm is provided with a third feed point for receiving the second feed signal.

5. The antenna device according to claim 4, characterized in that, The fifth radiation arm is disposed in a counterclockwise direction, and the fifth radiation arm is wound to form a plurality of hollow portions.

6. The antenna device according to claim 5, wherein The fifth radiation arm is provided with a fourth feed point for receiving the second feed signal.

7. The antenna device according to claim 1 or 2 or 4 or 5 or 6, characterized in that, The first antenna unit is used for the resonance of the first wireless network signal, and the second antenna unit is used for the resonance of the second wireless network signal.

8. The antenna device according to claim 7, characterized in that, The first wireless network signal is a 4G wireless network signal, and the second wireless network signal is a WiFi wireless network signal.

9. A mobile payment terminal, characterized in that, It includes a main body and a cover body. The main body is provided with a groove. When the cover body is covered on the main body, the groove is closed by the cover body to form a chamber, and the antenna device according to any one of claims 1-8 is arranged in the chamber; The cover body is provided with a first area that matches the shape of the substrate of the antenna device. The first area of the cover body is made of a material through which the electromagnetic wave emitted by the antenna device can pass, and the rest of the cover body is made of a metal material.

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