Antenna module and electronic terminal equipment
By setting first and second coils connected in series on the substrate and changing the coil routing, the antenna circuitry is simplified, the performance problem of combining NFC and WPC antennas is solved, the radiation effect and working efficiency are improved, and the net space of the antenna is increased.
Patent Information
- Application Number
- CN202422879807.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-11-26
AI Technical Summary
In the existing technology, when NFC antenna and WPC antenna are combined, the circuit is complex, which leads to a weakening of the radiation effect of NFC antenna and a reduction in the working efficiency of WPC antenna, as well as insufficient net space for antenna.
A first radiating antenna and a second radiating antenna are respectively mounted on the substrate. The first radiating antenna includes a first coil and a second coil connected in series. The second radiating antenna surrounds the first coil and/or the second coil. By changing the wiring connection of the coils, the circuit is simplified and the resistance is reduced, thereby increasing the net space.
With lower AC resistance, the antenna module achieves greater inductance, improving the radiation performance of the NFC antenna and the operating efficiency of the WPC antenna, while increasing the net space of the antenna.
Smart Images
Figure CN223713061U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to communication technology field, especially antenna module and the electronic terminal equipment of application this antenna module. BACKGROUND
[0002] Near field communication (near field communication), the device (such as mobile phone) using NFC technology can exchange data under the condition of being close to each other, is by contactless radio frequency identification (RFID) and interconnection intercommunication technology integration evolution, through the integration of inductive card reader, inductive card and point-to-point communication function on single chip, using mobile terminal realizes mobile payment, electronic ticket, access control, mobile identity recognition, anti-counterfeiting and other applications. Through NFC function, mobile phone, PDA, computer and many other electronic devices can be very convenient to realize wireless connection and data sharing. Wireless charging (WPC, wireless power charging), especially the emergence of wireless charging technology represented by electromagnetic induction, brings convenience to consumers. At present, high-end smart phones all support wireless charging. Through wireless charging equipment, consumers can charge the mobile phone conveniently, and get rid of the bondage of wire. Because the camera module of communication product is more and more, especially smart phone, resulting in no space for NCF antenna radiation on the top of product, so many cases are set together with NFC antenna and WPC antenna at present, save space and cost.
[0003] But at present, when the market sets NFC antenna and WPC antenna together, the setting line is relatively complex, so it will affect the performance of NFC antenna and WPC antenna, and the complex line design also makes the net space of the whole antenna smaller, which not only weakens the radiation effect of NFC antenna, but also reduces the working efficiency of WPC antenna.
[0004] Therefore, it is necessary to provide an antenna module and an electronic terminal device applying the same. UTILITY MODEL CONTENT
[0005] The utility model discloses a kind of antenna modules, not only can simplify antenna overall line, effectively promote antenna net space, and also can be connected by changing the wiring of coil, to effectively avoid the resistance of antenna whole, so that the first radiating antenna can obtain larger inductance under the condition of lower alternating current resistance.
[0006] To solve the above technical problems, the utility model provides an antenna module, the antenna module includes first radiation antenna, second radiation antenna, feed component, ground component and substrate, the feed component with the ground component with first radiation antenna and second radiation antenna electric connection, first radiation antenna, second radiation antenna all set up on the substrate, second radiation antenna surrounds first radiation antenna and set up, first radiation antenna includes first coil and second coil, first coil with second coil respectively stick up two sides of substrate, first coil with second coil series connection, second radiation antenna surrounds first coil and / or second coil.
[0007] As a further improvement of the utility model, the feed component includes a first feed point, the ground component includes a first ground point, the first feed point is electrically connected with one end of the first coil, and the first ground point is electrically connected with one end of the second coil.
[0008] As a further improvement of the utility model, one end of the first coil is led out from the first feed point and wound clockwise or counterclockwise, one end of the second coil is led out from the first ground point and wound clockwise or counterclockwise, and the other end of the first coil and the other end of the second coil are connected in series.
[0009] As a further improvement of the utility model, the first coil and the second coil are circularly arranged, the inner ring end of the first coil and the inner ring end of the second coil are provided with through holes, and the first coil and the second coil are connected in series through the through holes.
[0010] As a further improvement of the utility model, one end of the first coil is wound from the outer ring to the inner ring clockwise or counterclockwise, passes through the through hole, and the inner ring end of the second coil is wound from the inner ring to the outer ring along the winding direction of the first coil.
[0011] As a further improvement of the utility model, the first coil includes a first wire transition area and a first winding area, the second coil includes a second wire transition area and a second winding area, the first wire transition area, the first winding area, the second wire transition area and the second winding area are respectively attached to two sides of the substrate, and the first winding area and the second winding area are symmetrically overlapped.
[0012] As a further improvement of the utility model, the first coil and the second coil are each divided into three strands of wire, and the strand wire distance range is 0.1mm±0.01.
[0013] As a further improvement of the utility model, the first radiation antenna is configured as a WPC antenna coil, and the second radiation antenna is configured as an NFC antenna.
[0014] As a further improvement of the utility model, the NFC antenna single coil surrounds the WPC antenna coil.
[0015] As a further improvement of the utility model, the feeding assembly further comprises a second feeding point, and the grounding assembly comprises a second grounding point, the second feeding point is electrically connected with one end of the second radiating antenna, and the second grounding point is electrically connected with the other end of the second radiating antenna.
[0016] The utility model discloses a kind of electronic terminal equipment, to better apply the above-mentioned antenna module.
[0017] To solve the above technical problems, the utility model provides a kind of electronic terminal equipment, the electronic terminal equipment includes the antenna module described above.
[0018] The utility model provides an antenna module and electronic terminal equipment, the antenna module includes first radiating antenna, second radiating antenna, feeding assembly, grounding assembly and substrate, the feeding assembly and the grounding assembly are electrically connected with the first radiating antenna and the second radiating antenna;The first radiating antenna, second radiating antenna are all arranged on the substrate;The second radiating antenna is arranged around the first radiating antenna;The first radiating antenna includes first coil and second coil, the first coil and the second coil are attached to the two sides of the substrate respectively, the first coil and the second coil are connected in series, and the second radiating antenna surrounds the first coil and / or the second coil.The antenna module of the utility model not only can simplify antenna overall circuit, effectively promote antenna net space, but also can change the wiring connection of coil, thereby effectively avoid the resistance of antenna whole, so that the first radiating antenna can obtain larger inductance under lower alternating current resistance. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is structural schematic diagram of the antenna module of the utility model.
[0020] Figure 2 It is Figure 1 exploded view of the antenna module.
[0021] Figure 3 It is structural schematic diagram of another embodiment of the antenna module of the utility model.
[0022] Figure 4 It is the overhead view and sectional view of the magnetic field radiation of the antenna module of the utility model.
[0023] Among them, each reference sign is explained as follows:
[0024] Antenna module 1, first radiation antenna 12, first feeding point 121, first grounding point 122, through hole 123, first connecting hole 124, second connecting hole 125, first coil 126, second coil 127, second radiation antenna 11, second feeding point 111, second grounding point 112. DETAILED DESCRIPTION
[0025] The antenna module 1 and the electronic terminal device provided by the present application are further described in detail below in combination with the drawings and specific embodiments. It should be noted that the drawings are all very simplified and use non-precise proportions, and are only used to facilitate and clearly assist the purpose of describing the embodiments of the present application. In addition, the structures shown in the drawings are often part of the actual structure. In particular, different proportions are sometimes used in different drawings to show different emphases.
[0026] Electronic devices using NFC technology in near field communication can exchange data when they are close to each other. Through this function, wireless connection and data sharing between electronic terminal devices can be easily realized. In addition, the emergence of wireless charging, especially wireless charging technology represented by electromagnetic induction, brings convenience to users. Through wireless charging equipment, consumers can easily charge their mobile phones, and are free from the shackles of cables. At present, as the number of camera modules of communication products is increasing, especially for smart phones, the space for the top NFC antenna of the product to radiate, that is, the net space of the antenna, is reduced. In addition, in order to achieve effective charging efficiency, the traditional and conventional wiring is relatively complex, which makes the overall performance of the antenna poor.
[0027] The present application provides an antenna module 1, which comprises a first radiation antenna 12, a second radiation antenna 11, a feeding assembly, a grounding assembly and a substrate. The feeding assembly and the grounding assembly are electrically connected with the first radiation antenna 12 and the second radiation antenna 11. The first radiation antenna 12 and the second radiation antenna 11 are both arranged on the substrate. The second radiation antenna 11 surrounds the first radiation antenna 12. The first radiation antenna 12 comprises a first coil 126 and a second coil 127. The first coil 126 and the second coil 127 are respectively attached to two sides of the substrate. The first coil 126 and the second coil 127 are connected in series. The second radiation antenna 11 surrounds the first coil 126 and / or the second coil 127.
[0028] Thus, the antenna module 1 can simplify the overall circuit of the antenna, effectively improve the net space of the antenna, and effectively avoid the overall resistance of the antenna by changing the wiring connection of the coil, so that the first radiating antenna 12 can obtain a larger inductance under a lower alternating current resistance, thereby effectively improving the wireless charging efficiency.
[0029] Further, the feeding assembly comprises a first feeding point 121, and the grounding assembly comprises a first grounding point 122, the first feeding point 121 is electrically connected with one end of the first coil 126, and the first grounding point 122 is electrically connected with one end of the second coil 127. Since the first coil 126 and the second coil 127 are connected in series, the first coil 126 constitutes a backflow, that is, the first feeding point 121 excites the wiring of the first coil 126 and the second coil 127, and the first grounding point 122 provides a loop ground for the first coil 126 and the second coil 127.
[0030] The feeding assembly further comprises a second feeding point 111, and the grounding assembly comprises a second grounding point 112, the second feeding point 111 is electrically connected with one end of the second radiating antenna 11, and the second grounding point 112 is electrically connected with the other end of the second radiating antenna 11. Thus, the second coil 127 constitutes a current loop, that is, the second feeding point 111 excites the wiring of the second coil 127, and the second grounding point 112 provides a loop ground for the second coil 127.
[0031] In an embodiment, the second feeding point 111 and the second grounding point 112 of the second radiating antenna 11 are located on both sides of the first feeding point 121 and the first grounding point 122 of the first radiating antenna 12, that is, the first feeding point 121 and the first grounding point 122 are located between the second feeding point 111 and the second grounding point 112. In another embodiment, the first feeding point 121 and the first grounding point 122 are located on the side of the second feeding point 111 and the second grounding point 112.
[0032] Specifically, one end of the first coil 126 is led out from the first feeding point 121 and is wound clockwise or counterclockwise, one end of the second coil 127 is led out from the first grounding point 122 and is wound clockwise or counterclockwise, and the other end of the first coil 126 and the other end of the second coil 127 are connected in series. Preferably, the first coil 126 and the second coil 127 are arranged in a circular shape, and the inner ring end of the first coil 126 and the inner ring end of the second coil 127 are both provided with a through hole 123, and the first coil 126 and the second coil 127 are connected in series through the through hole 123. Of course, the first coil 126 and the second coil 127 can also be other shapes of coil arrangements, which are not limited herein.
[0033] The first radiation antenna 12 is configured as a WPC antenna coil, and the second radiation antenna 11 is configured as an NFC antenna. The NFC antenna single coil surrounds the WPC antenna coil. The NFC antenna single coil surrounding arrangement can effectively reduce the NFC line resistance, and at the same time, more walking space can be provided for the WPC wireless charging line.
[0034] There are generally two processes in the industry when designing a WPC coil, enameled copper wire (circular copper wire) and FPCB (flexible copper etching) line. In order to reduce the influence of skin effect, the WPC wire is usually divided into multiple wires. For example, the WPC antenna in the form of enameled copper wire will replace the thicker wire with a thinner copper wire (common wire diameter 0.06mm or 0.08mm), so that the AC resistance is as close to the DC resistance as possible, and the influence of skin effect is reduced. Similarly, the WPC antenna in the form of FPCB (flexible copper etching) line also usually adopts a split form. Skin effect: in an alternating current or alternating electromagnetic field, the current distribution in the conductor is uneven, and the current is mainly concentrated on the surface of the conductor. This phenomenon becomes more obvious as the frequency increases. As a result, the resistance of the conductor increases, resulting in increased power loss.
[0035] When the traditional wireless charging coil involves multiple coil combinations, parallel connection is generally used, that is, two or more coils are connected in parallel. This will result in multiple through holes in the coil. If the coil has too many through holes, the resistance on the line will increase, and the inductance of the wireless charging line under alternating current resistance will also be small, which will affect the efficiency of wireless charging. In the antenna module 1 of the utility model, the first coil 126 and the second coil 127 are connected in series, that is, the wireless charging WPC line adopts a split design, and the first coil 126 and the second coil 127 are designed in series on the upper and lower double-layer coil lines of the substrate. This makes the wireless charging line have a larger inductance under alternating current resistance.
[0036] Specifically, one end of the first coil 126 is wound clockwise or counterclockwise from the outer coil to the inner coil, passing through the through hole 123, and the inner coil end of the second coil 127 is wound along the winding direction of the first coil 126 from the inner coil to the outer coil. The first coil 126 includes a first wire transition area and a first winding area, the second coil 127 includes a second wire transition area and a second winding area, the first wire transition area, the first winding area and the second wire transition area, and the second winding area are respectively attached to the two sides of the substrate, and the first winding area and the second winding area are symmetrically overlapped.
[0037] Thus, the NFC and WPC combined two-in-one antenna module 1 of the utility model, NFC antenna circuit is arranged in the periphery, and single coil circuit; the inner WPC antenna circuit, single turn circuit adopts sub-thread design, double-layer circuit on the substrate and series connection design, so that the WPC circuit obtains larger inductance under lower alternating resistance.
[0038] Generally, the magnetic isolation material used by the WPC antenna is high magnetic permeability, if the number of NFC coil is more, the inductance is high, the resonant frequency is low, and better NFC performance is difficult to obtain. Therefore, the NFC circuit of the utility model adopts single coil design, and the single coil design of the NFC circuit can reduce the resistance of the NFC circuit, and at the same time, more space is given to the WPC circuit.
[0039] Further, the first coil 126 and the second coil 127 are each divided into three sub-windings, and the sub-thread distance is 0.1mm±0.01. In the first embodiment of the utility model, the WPC single-turn wire is divided into three sub-wires, and the sub-thread distance is as small as possible, so that the wire width can obtain more space, and the wire is wound clockwise or counterclockwise from the outside to the inside in a single layer, and then the wire is jumped to the other layer after reaching the innermost coil, and then wound from the inside to the outside along the same winding direction, and finally a complete WPC circuit is formed. The first coil 126 includes a first wire transition area and a first winding area, the second coil 127 includes a second wire transition area and a second winding area, the first wire transition area, the first winding area and the second wire transition area, and the second winding area are respectively attached to the two sides of the substrate, and the first winding area and the second winding area are symmetrically overlapped. That is, the wire width, wire distance and sub-thread distance of the upper and lower two layers of the first radiation antenna 12 of the utility model remain coincident in the first wire transition area and the second wire transition area, and the first winding area and the second winding area cannot be crossed.
[0040] As Figure 4As shown, the top view and sectional view of the magnetic field radiation of the antenna module 1, so it can be known that the magnetic field radiation of the first radiation antenna 12 in the antenna module 1 is stronger than the traditional radiation, so the radiation efficiency is high.
[0041] If the upper and lower two layers of coils of the substrate, namely the first coil 126 and the second coil 127, are crossed, the line width of one layer of wiring lines covers the line spacing of the other layer, or the line spacing covers the line width, resulting in the overall line being "blocky", being affected by the skin effect, and the AC resistance being very large, while the inductance is very low. In addition, the WPC line stock design can reduce the influence of the skin effect, but it is not that the more the stock is, the better, because too many stocks will cause the DC resistance to become large, and in turn cause the AC resistance to also become large, so the best effect of the stock is to ensure that the DC resistance is normal, so that the AC resistance is as equal to the DC resistance as possible, so as to minimize the influence of the skin effect.
[0042] The first radiation antenna 12 further comprises a first connecting hole 124 and a second connecting hole 125, the first connecting hole 124 is used to connect the first grounding point 122 of the second coil 127, and the second connecting hole 125 is used to connect the first feeding point 121 of the first coil 126. Of course, the first connecting hole 124 and the second connecting hole 125 can also be the first feeding point 121 of the first coil 126 and the first grounding point 122 of the second coil 127 respectively, which is not limited herein.
[0043] In summary, the antenna module 1 and the electronic terminal device are provided, the antenna module 1 comprises a first radiation antenna 12, a second radiation antenna 11, a feeding assembly, a grounding assembly and a substrate, the feeding assembly and the grounding assembly are electrically connected with the first radiation antenna 12 and the second radiation antenna 11, the first radiation antenna 12 and the second radiation antenna 11 are arranged on the substrate, the second radiation antenna 11 surrounds the first radiation antenna 12, the first radiation antenna 12 comprises a first coil 126 and a second coil 127, the first coil 126 and the second coil 127 are attached to two sides of the substrate respectively, the first coil 126 and the second coil 127 are connected in series, and the second radiation antenna 11 surrounds the first coil 126 and / or the second coil 127. The antenna module 1 can not only simplify the overall antenna circuit, effectively improve the antenna net space, but also effectively avoid the overall resistance of the antenna by changing the wiring connection of the coil, so that the first radiation antenna 12 can obtain larger inductance under lower AC resistance.
[0044] It should be noted that each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other, and in addition, the different parts of each embodiment can also be used in combination, and the utility model does not limit this.
[0045] The above description is only the description of the preferred embodiment of the utility model, and does not limit the scope of the utility model in any way, and any change or modification of the above disclosure by the ordinary skilled in the art is within the protection scope of the claims.
Claims
1. An antenna module, characterized by: The antenna module comprises a first radiating antenna, a second radiating antenna, a feeding assembly, a grounding assembly and a substrate, the feeding assembly and the grounding assembly are electrically connected with the first radiating antenna and the second radiating antenna; the first radiating antenna and the second radiating antenna are arranged on the substrate; The second radiating antenna is arranged around the first radiating antenna; the first radiating antenna comprises a first coil and a second coil, the first coil and the second coil are respectively attached to two sides of the substrate, the first coil and the second coil are connected in series, and the second radiating antenna surrounds the first coil and / or the second coil.
2. The antenna module of claim 1, wherein: The feeding assembly comprises a first feeding point, and the grounding assembly comprises a first grounding point, one end of the first coil is electrically connected with the first feeding point, and one end of the second coil is electrically connected with the first grounding point.
3. The antenna module of claim 2, wherein: One end of the first coil is led out from the first feeding point and wound clockwise or counterclockwise, one end of the second coil is led out from the first grounding point and wound clockwise or counterclockwise, and the other end of the first coil and the other end of the second coil are connected in series.
4. The antenna module of claim 1, wherein: The first coil and the second coil are arranged in a circular shape, the inner ring end of the first coil and the inner ring end of the second coil are both provided with a through hole, and the first coil and the second coil are connected in series through the through hole.
5. The antenna module of claim 4, wherein: One end of the first coil is wound from the outer ring to the inner ring clockwise or counterclockwise, passing through the through hole, and the inner ring end of the second coil is wound from the inner ring to the outer ring along the winding direction of the first coil.
6. The antenna module of claim 1, wherein: The first coil comprises a first wire transition area and a first winding area, the second coil comprises a second wire transition area and a second winding area, the first wire transition area, the first winding area, the second wire transition area and the second winding area are respectively attached to two sides of the substrate, and the first winding area and the second winding area are symmetrically overlapped.
7. The antenna module of claim 6, wherein: The first coil and the second coil are both divided into three strands of wire, and the distance range of the strands of wire is 0.1mm±0.
01.
8. The antenna module of claim 1, wherein: The first radiating antenna is configured as a WPC antenna coil, and the second radiating antenna is configured as an NFC antenna.
9. The antenna module of claim 8, wherein: The NFC antenna surrounds the WPC antenna coil in a single loop.
10. The antenna module of claim 1, wherein: The feeding assembly further comprises a second feeding point, and the grounding assembly comprises a second grounding point, one end of the second radiating antenna is electrically connected with the second feeding point, and the other end of the second radiating antenna is electrically connected with the second grounding point.
11. An electronic terminal device, characterized by: The electronic terminal device comprises the antenna module of any one of claims 1-10.