WO2023202113A1 - Ensemble antenne et dispositif pouvant être porté - Google Patents

Ensemble antenne et dispositif pouvant être porté Download PDF

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Publication number
WO2023202113A1
WO2023202113A1 PCT/CN2022/139726 CN2022139726W WO2023202113A1 WO 2023202113 A1 WO2023202113 A1 WO 2023202113A1 CN 2022139726 W CN2022139726 W CN 2022139726W WO 2023202113 A1 WO2023202113 A1 WO 2023202113A1
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WO
WIPO (PCT)
Prior art keywords
branch
circuit board
antenna
metal sheet
antenna assembly
Prior art date
Application number
PCT/CN2022/139726
Other languages
English (en)
Chinese (zh)
Inventor
陈宏�
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2023202113A1 publication Critical patent/WO2023202113A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support

Definitions

  • the present application relates to the technical field of antenna structures, and specifically to an antenna assembly and a wearable device.
  • the antenna layout goals of the above-mentioned electronic products are to pursue small size, low profile and high performance.
  • the human body will absorb most of the energy radiated by the antenna in the product, making the SAR (Specific Absorption Rate) value of the antenna in the product relatively low. High, performance decreases.
  • inventions of the present application provide an antenna assembly.
  • the antenna assembly includes a circuit board, an antenna and a metal sheet.
  • a feed source is provided on the circuit board; the antenna includes a feed source provided on the circuit board and connected to the circuit board.
  • the first branch of the feed connection; the metal sheet is spaced apart from the circuit board, and the metal sheet is located on the side of the circuit board where the first branch is provided; wherein, the metal sheet There is a gap between the first branch and the first branch, so that coupling between the metal sheet and the first branch can be achieved; the projection of the first branch on the metal sheet is in the first direction.
  • the first direction is a direction in which the end of the first branch connected to the feed source points to the end of the first branch away from the feed source.
  • the antenna assembly includes a circuit board, an antenna and a metal sheet; a feed source is provided on the circuit board; the antenna includes a circuit board provided on the circuit board. A first branch and a second branch spaced apart from the first branch. The first branch and the second branch are respectively connected to the feed source; the metal sheet is spaced apart from the circuit board. , and the metal piece is located on the side of the circuit board where the first branch is provided; wherein a gap is provided between the metal piece and the first branch, so that the metal piece and the first branch are Coupling can be achieved between the first branches; the projection of the first branch on the metal sheet is located in the metal sheet in a first direction, and the first direction is where the first branches are connected.
  • the end of the feed source points in a direction of the first branch away from the end of the feed source.
  • the wearable device includes a wearing component and an antenna component provided in the wearing component; the antenna component includes a circuit board, an antenna and a metal sheet, so A feed source is provided on the circuit board; the antenna includes a first branch located on the circuit board and connected to the feed source; the metal piece is spaced apart from the circuit board, and the metal piece Located on the side of the circuit board provided with the first branch; wherein, a gap is provided between the metal sheet and the first branch, so that the gap between the metal sheet and the first branch can achieve coupling; the projection of the first branch on the metal sheet is located in the metal sheet in the first direction, and the first direction is the end of the first branch connected to the feed source Pointing in the direction of the end of the first branch away from the feed source.
  • a metal sheet is provided on the side of the circuit board where the first branch is provided, and a gap is provided between the metal sheet and the first branch, so that the metal sheet and Coupling can be achieved between the first branches, thereby forming a coupling path; further, the projection of the first branch on the metal sheet is located within the metal sheet, that is, the projection of the metal sheet on the circuit board exceeds the first branch, thus achieving The purpose of extending the first branch is to achieve the technical effect of improving antenna performance.
  • the antenna assembly and the wearable device provided by the embodiments of the present application can reduce the overall complexity of the antenna assembly by arranging the metal sheet and the circuit board at intervals and forming a coupling path through non-contact coupling.
  • the layout space used to accommodate the antenna components in the wearable device can be flexibly utilized, that is, the layout freedom between the metal sheet and the circuit board can be improved.
  • Figure 1 is a schematic structural diagram of a wearable device in some embodiments of the present application.
  • Figure 2 is an exploded schematic diagram of the structure of the wearable device in the embodiment of Figure 1;
  • Figure 3 is a schematic cross-sectional structural diagram of the wearing component in the embodiment of Figure 1 along the A-A direction;
  • Figure 4 is a schematic structural diagram of an antenna assembly in some embodiments of the present application.
  • Figure 5 is a schematic cross-sectional structural diagram of the antenna assembly along the B-B direction in the embodiment of Figure 4;
  • Figure 6 is a schematic structural diagram of an antenna in some embodiments of the present application.
  • Figure 7 is a schematic structural diagram of an antenna in other embodiments of the present application.
  • Figure 8 is a schematic diagram of the current when the metal sheet and the first branch are coupled in some embodiments of the present application.
  • Figure 9 is a schematic structural diagram of an antenna assembly in other embodiments of the present application.
  • Figure 10 is a schematic cross-sectional structural diagram of the antenna assembly along the C-C direction in the embodiment of Figure 9;
  • Figure 11 is a schematic diagram of the efficiency curve of an antenna component in the related art
  • Figure 12 is a schematic diagram of the efficiency curve of the antenna assembly in some embodiments of the present application.
  • Figure 13 is a schematic diagram of the S11 curve of the antenna assembly in the related art.
  • Figure 14 is a schematic diagram of the S11 curve of the antenna assembly in some embodiments of the present application.
  • Figure 15 is a schematic diagram of the efficiency curve of an antenna component in the related art
  • Figure 16 is a schematic diagram of the efficiency curve of the antenna assembly in some embodiments of the present application.
  • Figure 17 is a schematic diagram of the S11 curve of the antenna assembly in the related art.
  • Figure 18 is a schematic diagram of the S11 curve of the antenna assembly in some embodiments of the present application.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • inventions of the present application provide an antenna assembly.
  • the antenna assembly includes a circuit board, an antenna and a metal sheet.
  • a feed source is provided on the circuit board; the antenna includes a feed source provided on the circuit board and connected to the circuit board.
  • the first branch of the feed connection; the metal sheet is spaced apart from the circuit board, and the metal sheet is located on the side of the circuit board where the first branch is provided; wherein, the metal sheet There is a gap between the first branch and the first branch, so that coupling between the metal sheet and the first branch can be achieved; the projection of the first branch on the metal sheet is in the first direction.
  • the first direction is a direction in which the end of the first branch connected to the feed source points to the end of the first branch away from the feed source.
  • the gap between the metal piece and the first branch does not exceed 0.2 mm.
  • the gap between the metal piece and the first branch does not exceed 0.1 mm.
  • the antenna further includes a second branch arranged at a distance from the first branch.
  • the second branch includes a horizontal branch and a vertical branch connected by bends.
  • the vertical branch connects the Feed source, the horizontal branches are parallel to the first branches.
  • the circuit board includes a first side and a second side arranged oppositely, the first branches are arranged on the first side; the horizontal branches are arranged on the second side facing away from each other. One side of the first surface is spaced apart from the second surface.
  • first spacing between the first branch and the horizontal branch in a direction perpendicular to the first surface and/or the second surface there is a first spacing between the first branch and the horizontal branch in a direction perpendicular to the first surface and/or the second surface, and the first spacing is not Less than 1mm.
  • the first distance does not exceed 4 mm.
  • the second spacing in a direction parallel to the first surface and/or the second surface, there is a second spacing between the horizontal branches and the circuit board, and the second spacing is not less than 0.2 mm.
  • a shielding cover is provided on the first surface of the circuit board, and the shielding cover is reused as the first branch.
  • the current directions of the metal piece and the first branch are consistent.
  • the length of the metal piece in the first direction is not less than 1/4 of the operating wavelength of the antenna.
  • the antenna assembly includes a circuit board, an antenna and a metal sheet; a feed source is provided on the circuit board; the antenna includes a circuit board provided on the circuit board. A first branch and a second branch spaced apart from the first branch. The first branch and the second branch are respectively connected to the feed source; the metal sheet is spaced apart from the circuit board. , and the metal piece is located on the side of the circuit board where the first branch is provided; wherein a gap is provided between the metal piece and the first branch, so that the metal piece and the first branch are Coupling can be achieved between the first branches; the projection of the first branch on the metal sheet is located in the metal sheet in a first direction, and the first direction is where the first branches are connected.
  • the end of the feed source points in a direction of the first branch away from the end of the feed source.
  • the circuit board includes a first side and a second side arranged side by side, and the first branch is provided on the first side and connected to the ground end of the feed source;
  • the second branch is connected to the feed source and extends from the feed source to one side of the second surface of the circuit board.
  • the second branch includes a horizontal branch and a vertical branch connected by a bend, one end of the vertical branch is connected to the feed source, and the other end is connected to the horizontal branch, and the horizontal branch is located on The second surface is on one side facing away from the first surface and spaced apart from the second surface.
  • the horizontal branches are parallel to the first branches.
  • the horizontal branch includes a first transmission line and a second transmission line, the first transmission line and the second transmission line are connected in parallel through the vertical branch, and one end of the second transmission line is connected to the The first branch.
  • the wearable device includes a wearing component and an antenna component provided in the wearing component; the antenna component includes a circuit board, an antenna and a metal sheet, so A feed source is provided on the circuit board; the antenna includes a first branch located on the circuit board and connected to the feed source; the metal piece is spaced apart from the circuit board, and the metal piece Located on the side of the circuit board provided with the first branch; wherein, a gap is provided between the metal sheet and the first branch, so that the gap between the metal sheet and the first branch can achieve coupling; the projection of the first branch on the metal sheet is located in the metal sheet in the first direction, and the first direction is the end of the first branch connected to the feed source Pointing in the direction of the end of the first branch away from the feed source.
  • the wearing component includes a surrounding wall, and the surrounding wall forms a receiving space for housing the antenna component; when the wearable device is worn or close to the human body, the surrounding wall includes a space close to the human body. Or adjacent to the first wall of the human body; wherein, the circuit board is accommodated in the accommodation space, and the first branch is provided on a side of the circuit board close to the first wall; the metal sheet is provided on the first wall.
  • the antenna assembly further includes a second branch located on a side of the circuit board away from the first branch and spaced apart from the circuit board; wherein the surrounding wall further includes The second wall is surrounded by the first wall to form the accommodation space, and the second branch is provided on the second wall.
  • the length of the circuit board in the first direction does not exceed 30 mm.
  • Electronic devices can include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment (User Equipment, UE), mobile stations ( Mobile Station (MS), terminal device (terminal device), etc.
  • UE User Equipment
  • MS Mobile Station
  • terminal device terminal device
  • wearable devices can be wearable devices such as smart bracelets, smart watches, VR glasses, AR glasses, smart anklets, and smart belts. There is no limit here, as long as the wearable device can be worn on the human body.
  • This application is understood to be a wearable device.
  • the wearable device in the embodiment of the present application is described by taking a head-mounted device as an example.
  • Figure 1 is a schematic structural diagram of the wearable device 100 in some embodiments of the present application
  • Figure 2 is an exploded schematic structural diagram of the wearable device 100 in the embodiment of Figure 1.
  • the wearable device 100 generally includes a housing component 10 , a wearing component 20 connected to both ends of the housing component 10 , and an antenna component 30 disposed in the wearing component 20 .
  • the housing component 10 and the wearing component 20 can form a stowable frame to facilitate wearing the wearable device 100 on the human body.
  • the wearable device 100 may be VR glasses, AR glasses, etc. In the embodiment of this application, AR glasses are taken as an example for description.
  • the wearing assembly 20 may include two wearing parts, namely a first wearing part 21 and a second wearing part 22.
  • the first wearing part 21 and the second wearing part 22 cooperate so that the wearable device 100 can be clamped and worn. in the human body.
  • One end of the first wearing part 21 is connected to the corresponding end of the housing assembly 10 , and the other end of the first wearing part 21 extends in a direction away from the housing assembly 10 to form a free end.
  • the second wearing part 22 can be installed in a similar manner to the first wearing part 21 .
  • first wearing part 21 and the second wearing part 22 are respectively connected to the corresponding ends of the housing component 10 of the wearable device 100, and extend in an arc-shaped strip shape on the same side of the housing component 10 toward each other, so as to Used to hold and wear the wearable device 100 .
  • the wearing component 20 may be a temple, that is, the first wearing part 21 and the second wearing part 22 may be a left temple and a right temple respectively.
  • the wearing component 20 may be a hand strap, that is, the first wearing part 21 and the second wearing part 22 may be a left-hand strap and a right-hand strap respectively.
  • the wearable device 100 may also be in other forms, and the wearing component 20 may be in a corresponding form.
  • the first wearing part 21 and the second wearing part 22 can expand and deform, and under the action of the deformation tension, the wearable device 100 can be clamped and worn on the human body.
  • the first wearing part 21 and the second wearing part 22 may respectively be two temples of AR glasses.
  • the wearing component 20 can be opened and closed for easy storage.
  • the wearable device 100 may be configured to communicate data to and receive data from an external device through a signal connection, which may be a wired connection, a wireless connection, or a combination thereof.
  • a signal connection which may be a wired connection, a wireless connection, or a combination thereof.
  • the wearable device 100 may be used as a stand-alone device, ie, data processing is performed on the wearable device 100 itself.
  • the signal connections may be configured to carry any kind of data, such as image data (eg, still images and/or full motion video, including 2D and 3D images), audio, multimedia, voice, and/or any other type of data.
  • the external device may be, for example, a game console, personal computer, tablet, smartphone, or other type of processing device.
  • the signal connection may be, for example, a Universal Serial Bus (USB) connection, a Wi-Fi connection, a Bluetooth or Bluetooth Low Energy (BLE) connection, an Ethernet connection, a cable connection, a DSL connection, a cellular connection (e.g., 3G, LTE/4G or 5G), etc. or combinations thereof.
  • an external device may communicate with one or more other external devices via a network, which may be or include, for example, a local area network (LAN), a wide area network (WAN), an intranet, a metropolitan area network (MAN), the global Internet, or a combination thereof.
  • LAN local area network
  • WAN wide area network
  • MAN metropolitan area network
  • the global Internet or a combination thereof.
  • the wearable device 100 may further include a host contained in the housing component 10 , and the host may include an optical-mechanical component, a camera component, a motherboard, a speaker component, a microphone component, etc. Since the housing assembly 10 is used to accommodate and protect the host, the housing assembly 10 may also be called a host housing or a protective housing. The housing assembly 10 and the host contained therein may constitute a host assembly.
  • the housing assembly 10 of the wearable device 100 may mount display components, optical devices, sensors, processors, etc. In the example of AR glasses, the display components are designed to overlay images on the user's view of their real-world environment, for example, by projecting light into the user's eyes. Wearable device 100 may also include an ambient light sensor, and may further include electronic circuitry to control at least some of the components described above and perform associated data processing functions. Electronic circuitry may include, for example, one or more processors and one or more memories.
  • some components of the host may be accommodated in the wearing component 20.
  • components such as speaker components and microphone components may be accommodated in the wearing component 20.
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection. , or it can be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components.
  • installation and “connection” should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection. , or it can be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components.
  • the antenna component 30 is provided in the wearing component 20 , that is, the antenna component 30 can be received in the internal space of the first wearing part 21 or the second wearing part 22 .
  • the antenna assembly 30 may be used to transmit and/or receive electromagnetic wave signals, thereby enabling the wearable device 100 to achieve signal connection and signal exchange with external devices.
  • the wearable device 100 is generally worn or used close to the human body during use, so that the antenna assembly 30 is affected by the human body during use and has limited antenna performance, and the SAR value has obvious limitations, and the effect is not ideal.
  • the space inside the wearable component 20 based on the wearable device 100 for accommodating the antenna component 30 is limited, and the layout of large-sized antennas is limited, which is not conducive to improving antenna performance. Based on this, embodiments of the present application provide a wearable device 100 and an antenna assembly 30 to solve the above technical problems.
  • FIG. 3 is a schematic cross-sectional structural diagram of the wearing component 20 along the A-A direction in the embodiment of FIG. 1 . It can be understood that when the antenna component 30 is disposed in the first wearing part 21, FIG. 3 can be understood as a schematic cross-sectional structural diagram of the first wearing part 21; when the antenna component 30 is disposed in the second wearing part 22, FIG. 3 It can be understood as a schematic cross-sectional structural diagram of the second wearing part 22 .
  • the first wearing part 21 and/or the second wearing part 22 of the wearing assembly 20 includes a surrounding wall 201 , and the surrounding wall 201 is configured to surround and form an accommodating space 202 for accommodating the antenna assembly 30 .
  • the surrounding wall 201 can be an integrally formed structural member.
  • the surrounding wall 201 may be assembled and formed by multiple walls, and there is no specific limitation on this.
  • the surrounding wall 201 may include a first wall 201a and a second wall 201b arranged opposite each other.
  • the first wall 201a and the second wall 201b cooperate to form the above-mentioned accommodation space 202.
  • the first wall 201a is close to or adjacent to the human body.
  • the wearable device 100 is worn on the human body, in external vision, the first wall 201a is at least partially blocked by the human body and visually invisible, and the second wall 201a is almost not blocked by the human body and is visually invisible. Visually present a visible state.
  • first wall 201a and the second wall 201b can directly form the above-mentioned surrounding wall 201 through an integral molding process.
  • first wall 201a and the second wall 201b can also be formed separately and then assembled into one body through bonding, clamping, screwing, welding and other connection methods.
  • the first wall 201a can be in the form of a plate
  • the second wall 201b can be in the form of a box-like structure with an opening.
  • the first wall 201a covers the opening of the second wall 201b to cooperate with the second wall 201b to form an enclosure.
  • Space 202 is one example, and the first wall 201a and the second wall 201b.
  • the first wall 201a can be in the form of a box-like structure with an opening
  • the second wall 201b can be in the form of a plate
  • the second wall 201b is covered at the opening of the first wall 201a to communicate with the first wall 201a.
  • the accommodation space 202 is formed in conjunction with the enclosure.
  • both the first wall 201a and the second wall 201b may be in a box-like structure with an opening, and are interlocked with each other to form the accommodation space 202. It should be noted that the above-mentioned embodiments of the present application only exemplify the structures of the first wall 201a and the second wall 201b, and are not limited to the above-mentioned structures.
  • the antenna assembly 30 is received in the accommodation space 202 for transmitting and/or receiving electromagnetic wave signals, thereby enabling the wearable device 100 to achieve signal connection and signal exchange with external devices.
  • the antenna assembly 30 generally includes a circuit board 31 , an antenna 32 and a metal sheet 33 .
  • the circuit board 31 is received in the accommodation space 202 and connected to the surrounding wall 201 .
  • the circuit board 31 can be connected and fixed to the surrounding wall 201 through bonding, snapping, screwing, welding and other connection methods.
  • the circuit board 31 can be connected and fixed to the first wall 201a and/or the second wall 201b through bonding, snapping, screwing, welding, or other connection methods.
  • the circuit board 31 can be a printed circuit board (PCB), which is used for signal connection with the main board in the wearable device 100 to achieve data exchange.
  • PCB printed circuit board
  • the circuit board 31 can be integrated with electronic circuits and electronic devices that can implement the antenna function.
  • the antenna 32 is partially connected to the surrounding wall 201 and to the circuit board 31 to realize the transmission and/or reception of electromagnetic wave signals.
  • the metal sheet 33 is provided on the side of the circuit board 31 close to the first wall 201a, which plays an isolation role to a certain extent and can achieve an obvious optimization effect on the SAR value.
  • FIG. 4 is a schematic structural diagram of the antenna assembly 30 in some embodiments of the present application.
  • FIG. 5 is a schematic cross-sectional structural diagram of the antenna assembly 30 along the B-B direction in the embodiment of FIG. 4 .
  • the antenna assembly 30 generally includes a circuit board 31 , an antenna 32 and a metal sheet 33 .
  • the circuit board 31 may include a first side 31a and a second side 31b arranged oppositely.
  • the first side 31a is the surface of the circuit board 31 close to the first wall 201a
  • the second side 31b is the surface of the circuit board 31 close to the second wall 201b. s surface.
  • the first surface 31a and the second surface 31b are located on opposite sides of the circuit board 31 in sequence.
  • the first side 31a of the circuit board 31 is closer to the human body than the second side 31b. That is, the first side 31a of the circuit board 31 is the surface of the circuit board 31 that is close to the human body.
  • FIG. 4 illustrates the three directions of X, Y, and Z of the antenna assembly 30 to facilitate corresponding description in the following.
  • the X direction can be understood as the extension direction of the wearing component 20 away from the housing component 10 , that is, the length direction of the wearing component 20
  • the Y direction can be understood as the direction in which the wearing component 20 points to the human body, that is, the thickness direction of the wearing component 20
  • the Z direction is generally perpendicular to
  • the XY plane can be the height direction of the wearing component 20 .
  • the wearing component 20 based on the usage nature of the wearing component 20 , its size in the X direction is generally longer, and its size in the Y and Z directions is generally shorter.
  • the capacity of the accommodation space 202 is generally small based on the size restrictions of the wearing component 20 in the X, Y, and Z directions.
  • the direction in which the wearing component 20 is tied around the head can be understood as the X direction, and the size of the wearing component 20 is longer in this direction.
  • the length of the wearing component 20 along the X direction is different, and the length of the wearing component 20 is generally about 10 cm.
  • the size of the wearing component 20 along the Y and Z directions is usually not too large.
  • the thickness of the wearing component 20 along the Y direction is generally about 1 cm, and the thickness along the Y direction is generally about 1 cm.
  • the height in the Z direction is generally about 5cm.
  • the above only illustrates the approximate size of the wearing component 20 , and for some special wearable devices, the size of the wearing component 20 may exceed the above range.
  • the circuit board 31 may be a rectangular circuit board, which may have a relatively long first side L and a relatively short second side S, and the adjacent first side L and the second side S are connected.
  • the extending direction of the first side L is generally parallel to the X direction
  • the extending direction of the second side S is generally parallel to the Z direction.
  • the length of the first side L is generally about 30 mm
  • the length of the second side S is generally about 10 mm.
  • the size of the circuit board 31 can be flexibly adjusted according to the size of the accommodating space 202 to suit the size of the accommodating space 202 . It can be understood that the circuit board 31 can also be in other shapes such as circular, trapezoidal, etc.
  • a feed source 311 is provided on the circuit board 31 .
  • the feed source 311 can be used as a signal input and output point, so that when the feed source 311 is excited by a signal, current can flow on the antenna 32 , thereby causing the antenna 32 to Able to receive or transmit electromagnetic wave signals. Further, the feed 311 can receive or transmit electromagnetic wave signals under the control of the circuit board 31 .
  • the feed source 311 can be electrically connected to the antenna 32 through signal lines such as coaxial lines. It can be understood that the feed source 311 can be provided on the first surface 31 a or the second surface 31 b of the circuit board 31 .
  • the antenna 32 generally includes a first branch 321 provided on the circuit board 31 and a second branch 322 spaced apart from the first branch 321 .
  • the first branch 321 and the second branch 322 are connected to the feed source 311 respectively.
  • the first branch 321 can be connected to the ground end of the feed source 311 , that is, the first branch 321 can be understood as a ground plane provided on the circuit board 31
  • the second branch 322 can be connected to the output end of the feed source 311 connect. It can be understood that the length of the first branch 321 is limited by the length of the circuit board 31 along the X direction and is generally difficult to extend.
  • the lengths of the first branch 321 and the second branch 322 are generally The antenna performance is better when operating at 1/4 of the wavelength. Based on this, for antennas operating in high frequency bands such as 2.4Ghz ⁇ 2.5Ghz, the 1/4 wavelength during normal operation generally exceeds 30mm.
  • the metal piece 33 is coupled to the first branch 321 to extend the length of the first branch 321 to a certain extent, thereby ensuring that the antenna has good working performance.
  • the end of the first branch 321 connected to the feed source 311 can be defined as the connecting end of the first branch 321
  • the end of the first branch 321 away from the feed source 311 can be defined as the free end of the first branch 321 .
  • the second branch 322 may be in an inverted L shape or an inverted F shape, that is, the antenna 32 may be an inverted L antenna or an inverted F antenna.
  • Figure 6 is a schematic structural diagram of the antenna 32 in some embodiments of the present application
  • Figure 7 is a schematic structural diagram of the antenna 32 in other embodiments of the present application, wherein the antenna 32 shown in Figure 6 is Inverted L antenna, the antenna 32 shown in Figure 7 is an inverted F antenna.
  • the second branch 322 is in an inverted L shape.
  • the second branch 322 roughly includes a horizontal branch 3221 and a vertical branch 3222 connected by bends.
  • One end of the vertical branch 3222 is connected to the feed source 311, and the other end is connected to the horizontal branch.
  • the horizontal branch 3221 can be parallel to the first branch 321.
  • the second branch 322 is in an inverted F shape.
  • the second branch 322 generally includes a horizontal branch 3221 and a vertical branch 3222 connected by bends. One end of the vertical branch 3222 is connected to the feed source 311, and the other end is connected to the horizontal branch. 3221, the horizontal branch 3221 can be parallel to the first branch 321.
  • the horizontal branch 3221 generally includes a parallel first transmission line 3221a and a second transmission line 3221b. The ends of the first transmission line 3221a and the second transmission line 3221b that are close to each other or the ends that are shared with each other are connected in parallel through the vertical branch 3222.
  • the second transmission line 3221b The end far away from the first transmission line 3221a is connected to the first branch 321.
  • a first distance a1 is defined between the horizontal branch 3221 and the first branch 321 .
  • the first distance a1 is generally not less than 1 mm.
  • the first distance a1 may be 1 mm, 2 mm, 3 mm, 4 mm, etc.
  • the antenna component 30 in the wearable device 100 is generally used to receive or transmit electromagnetic wave signals with relatively high frequency.
  • the frequency band of the electromagnetic wave signal received or transmitted by the antenna component 30 is approximately 2.4Ghz ⁇ 2.5Ghz. Further combined with the accommodation Due to the space limitation of the space 202, the first distance a1 generally does not exceed 4 mm.
  • the horizontal branches 3221 can be spaced apart from the circuit board 31 to provide a reasonable clearance area and avoid affecting the antenna performance. That is, in a direction generally parallel to the first surface 31a or the second surface 31b, there is a second distance a2 between the horizontal branch 3221 and the circuit board 31.
  • the second spacing a2 is generally not less than 0.2mm.
  • the second distance a2 may be 0.2mm, 0.3mm, 0.4mm, 0.5mm, etc. It can be understood that, combined with the space limitations of the accommodation space 202, the smaller the second distance a2 is, the more it is in line with the actual structural layout requirements.
  • the metal sheet 33 is spaced apart from the circuit board 31 and is located on the side of the circuit board 31 where the first branch 321 is provided.
  • the first branch 321 can be disposed on the side of the circuit board 31 close to the first wall 201a, that is, the first branch 321 can be disposed on the first surface 31a of the circuit board 31; the second branch 322 can be disposed on the second side of the circuit board 31.
  • the metal sheet 33 may be disposed on the first wall 201a.
  • a gap is provided between the metal piece 33 and the first branch 321 so that coupling between the metal piece 33 and the first branch 321 can be achieved.
  • the projection of the first branch 321 on the metal sheet 33 is located in the metal sheet 33 in the first direction, and the first direction is generally the direction in which the connecting end of the first branch 321 points to the free end. That is, the projection of the metal sheet 33 on the first surface 31 a extends beyond the free end of the first branch 321 along the first direction.
  • the gap b1 between the metal piece 33 and the first branch 321 generally does not exceed 0.2 mm.
  • the gap b1 can be 0.05mm, 0.1mm, 0.15mm, 0.2mm, etc.
  • the coupling effect between the metal piece 33 and the first branch 321 is better.
  • the metal sheet and the first branch are arranged with a gap so that the metal sheet can be coupled with the first branch, and further the projection of the first branch on the metal sheet is located in the metal sheet in the first direction.
  • the first branch can be extended to a certain extent, thereby improving the antenna performance.
  • Figure 8 is a schematic diagram of the current when the metal piece 33 is coupled to the first branch 321 in some embodiments of the present application. It can be seen from Figure 8 that when the metal piece 33 is coupled to the first branch 321, the metal piece 33 It is consistent with the current direction of the first branch 321 (as shown by the arrow in FIG. 8 ), thereby forming a coupling path. That is, when a coupling path is formed between the metal piece 33 and the first branch 321, the first branch 321 is equivalent to being extended, thereby improving the performance of the antenna 32.
  • the operating frequency band of the antenna assembly 30 is 2.4Ghz ⁇ 2.5Ghz, and the gap b1 does not exceed 0.1mm, high-frequency conduction is achieved through close coupling between the metal piece 33 and the first branch 321, thereby achieving extended
  • the length of the first branch is 321 to improve the antenna performance.
  • a metal sheet is provided on the side of the circuit board where the first branch is provided, and a gap is provided between the metal sheet and the first branch, so that the metal sheet and Coupling can be achieved between the first branches, thereby forming a coupling path; further, the projection of the first branch on the metal sheet is located within the metal sheet, that is, the projection of the metal sheet on the circuit board exceeds the first branch, so that To achieve the purpose of extending the first branch, and then achieve the technical effect of improving antenna performance.
  • the wearable device when the size of the wearable device is limited, the space within the wearable component for accommodating the antenna component is limited. At this time, the size of the circuit board is limited. When the length of the circuit board in the X direction is lower than the wavelength of the antenna when it is working, At 1/4, the performance of the antenna is usually poor.
  • the metal piece is coupled to the first branch to form a coupling path to extend the service length of the first branch, thereby improving the antenna performance and achieving a better state.
  • the projection of the first branch on the metal sheet is located within the metal sheet, and the metal sheet is disposed on the side of the first branch close to the human body, which can provide an isolation effect to optimize the SAR value.
  • the size of the metal sheet in the Z direction exceeds the first branch by about 0.2mm on one side
  • the size of the metal sheet in the X direction exceeds the first branch.
  • the size of the metal piece along the X direction can be 1/4 or greater than 1/4 of the antenna's operating wavelength to ensure antenna performance.
  • the length of the metal sheet along the X direction is approximately 40 mm.
  • the length of the metal sheet along the X direction may be 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, etc.
  • the metal sheet and the circuit board are respectively arranged in the accommodation space, and the metal sheet and the circuit board are arranged at intervals, which can improve the flexibility and freedom of the layout of the metal sheet.
  • Figure 9 is a schematic structural diagram of the antenna assembly 40 in other embodiments of the present application.
  • Figure 10 is a schematic cross-sectional structural diagram of the antenna assembly 40 in the embodiment of Figure 9 along the C-C direction.
  • the difference between the antenna assembly 40 in the embodiment of the present application and the antenna assembly 30 in the previous embodiment is that the circuit board 31 is provided with a shielding cover 34 .
  • the circuit board 31 can be integrated with electronic circuits and electronic devices that can implement the antenna function.
  • the circuit board 31 can be integrated with a radio frequency circuit system.
  • a shielding cover 34 is provided on the circuit board 31 to cover the radio frequency circuit system, thereby avoiding possible interference to the antenna 32 caused by the radio frequency circuit system.
  • the shielding cover 34 is a tool used to shield electronic signals, and its function is to shield the influence of external electromagnetic waves on the internal circuit and the external radiation of electromagnetic waves generated internally.
  • the shielding cover 34 is generally made of metal materials such as stainless steel and nickel-nickel alloy with a thickness of about 0.2 mm.
  • nickel-nickel alloy is a metal shielding material that is easy to be tinned.
  • the shielding case 34 is provided on the first surface 31 a of the circuit board 31 and covers the electronic circuit provided on the first surface 31 a of the circuit board 31 .
  • the ground end of the feed source 311 on the circuit board 31 is connected to the shielding case 34 , so that the shielding case 34 is reused as the first branch 321 of the antenna 32 .
  • the surface of the shielding case 34 facing away from the circuit board 31 is configured to form a ground plane of the circuit board 31 and is connected to the ground end of the feed source 311 to form the first branch 321 .
  • a shielding cover may also be provided on the second side 31b of the circuit board 31, that is, a shielding cover may be provided on both the first side 31a and the second side 31b of the circuit board 31.
  • the shielding cover 34 on the circuit board 31 can be used to form the first branch 321 of the antenna 32.
  • the gap b1 can be the gap between the metal sheet 33 and the shielding cover 34.
  • the first distance a1 can be the distance between the horizontal branches 3221 and the shielding case 34, that is, there is a first distance a1 between the surface of the shielding case 34 facing away from the circuit board 31 and the horizontal branches 3221.
  • the antenna assembly and the wearable device provided by the embodiments of the present application through the above structural arrangement, can not only achieve better antenna performance in the small space inside the wearing assembly of the wearable device, but also achieve obvious optimization effects on the SAR value. At the same time, the freedom of assembly is high.
  • Figure 11 is a schematic diagram of the efficiency curve of an antenna component in the related art.
  • Figure 12 is a schematic diagram of the efficiency curve of an antenna component in some embodiments of the present application.
  • the antenna in Figures 11 and 12 is an inverted L. antenna.
  • the first spacing a1 of the antenna components is 1.08mm
  • the second spacing a2 is 0.2mm
  • the gap b1 is 0.1mm.
  • the antenna assembly in the related art does not have a metal piece to extend the length of the first branch. Therefore, the data of antenna frequency and efficiency obtained through experimental simulation are shown in Table 1:
  • the antenna assembly in the embodiment of the present application extends the length of the first branch by arranging metal sheets. From this, the data of antenna frequency and efficiency obtained through experimental simulation are shown in Table 2:
  • the peak efficiency of the antenna is approximately -5.45dB
  • the average efficiency is approximately -5.79dB
  • the peak gain is approximately 1.13dBi
  • the peak efficiency frequency point Sar is approximately 2.06.
  • Figure 13 is a schematic diagram of the S11 curve of the antenna assembly in the related art.
  • Figure 14 is a schematic diagram of the S11 curve of the antenna assembly in some embodiments of the present application.
  • the antenna in Figures 13 and 14 is an inverted L. antenna.
  • the first spacing a1 of the antenna components is 1.08mm
  • the second spacing a2 is 0.2mm
  • the gap b1 is 0.1mm.
  • the antenna assembly in the related art does not have a metal piece to extend the length of the first branch. Therefore, the data of the antenna frequency and input return loss obtained through experimental simulation are shown in Table 3:
  • the antenna assembly in the embodiment of the present application extends the length of the first branch by arranging metal sheets. From this, the data of antenna frequency and input return loss obtained through experimental simulation are shown in Table 4:
  • Figure 15 is a schematic diagram of the efficiency curve of an antenna component in the related art.
  • Figure 16 is a schematic diagram of the efficiency curve of an antenna component in some embodiments of the present application.
  • the antenna in Figures 15 and 16 is an inverted F antenna. Among them, the first spacing a1 of the antenna components is 1.08mm, the second spacing a2 is 0.2mm, and the gap b1 is 0.1mm.
  • the antenna assembly in the related art does not have a metal piece to extend the length of the first branch. Therefore, the data of antenna frequency and efficiency obtained through experimental simulation are shown in Table 5:
  • the antenna assembly in the embodiment of the present application extends the length of the first branch by arranging metal sheets. From this, the data of antenna frequency and efficiency obtained through experimental simulation are shown in Table 6:
  • the peak efficiency of the antenna is approximately -4.5dB
  • the average efficiency is approximately -4.7dB
  • the peak gain is approximately 2.12dBi
  • the peak efficiency frequency point Sar is approximately 1.78.
  • Figure 17 is a schematic diagram of the S11 curve of the antenna assembly in the related art.
  • Figure 18 is a schematic diagram of the S11 curve of the antenna assembly in some embodiments of the present application.
  • the antenna in Figures 17 and 18 is an inverted F antenna. Among them, the first spacing a1 of the antenna components is 1.08mm, the second spacing a2 is 0.2mm, and the gap b1 is 0.1mm.
  • the antenna assembly in the related art does not have a metal piece to extend the length of the first branch. Therefore, the data of the antenna frequency and input return loss obtained through experimental simulation are shown in Table 7:
  • the antenna assembly in the embodiment of the present application extends the length of the first branch by arranging metal sheets. From this, the data of antenna frequency and input return loss obtained through experimental simulation are shown in Table 8:
  • the antenna assembly and wearable device provided by the embodiment of the present application, by arranging a metal piece to extend the length of the first branch, and combined with the above structural arrangement, can not only achieve a better antenna in a small space inside the wearing assembly of the wearable device performance, while achieving significant optimization effects on SAR values.

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Abstract

Sont prévus dans la présente demande un ensemble antenne et un dispositif pouvant être porté. L'ensemble antenne comprend une carte de circuit imprimé, une antenne et une feuille métallique, la carte de circuit imprimé étant pourvue d'une source d'alimentation ; l'antenne comprend une première branche, qui est disposée sur la carte de circuit imprimé et est connectée à la source d'alimentation ; la feuille métallique et la carte de circuit imprimé sont disposées à un intervalle, et la feuille métallique est située au niveau du côté de la carte de circuit imprimé qui est pourvu de la première branche ; la feuille métallique et la première branche sont agencées de manière telle qu'un espace est formé entre elles, de telle sorte que la feuille métallique et la première branche peuvent être couplées ; et une projection de la première branche sur la feuille métallique est située dans la feuille métallique dans une première direction. Dans l'ensemble antenne et le dispositif pouvant être porté qui sont prévus dans les modes de réalisation de la présente demande, la feuille métallique est disposée au niveau du côté de la carte de circuit imprimé qui est pourvu de la première branche, et la feuille métallique et la première branche sont agencées de manière telle qu'un espace est formé entre celles-ci, de telle sorte que la feuille métallique et la première branche peuvent être couplées ; et la projection de la première branche sur la feuille métallique est située dans la feuille métallique, de telle sorte que l'objectif d'extension de la première branche est réalisé, ce qui permet d'obtenir l'effet technique d'amélioration des performances d'antenne.
PCT/CN2022/139726 2022-04-18 2022-12-16 Ensemble antenne et dispositif pouvant être porté WO2023202113A1 (fr)

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CN202220897755.6 2022-04-18
CN202220897755.6U CN217544919U (zh) 2022-04-18 2022-04-18 天线组件以及可穿戴设备

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Publication number Priority date Publication date Assignee Title
CN217544919U (zh) * 2022-04-18 2022-10-04 Oppo广东移动通信有限公司 天线组件以及可穿戴设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106340708A (zh) * 2016-09-30 2017-01-18 努比亚技术有限公司 一种天线结构及电子设备
CN110504528A (zh) * 2019-08-22 2019-11-26 出门问问信息科技有限公司 一种天线结构及具有该天线结构的可穿戴设备
CN110994158A (zh) * 2019-12-26 2020-04-10 西安易朴通讯技术有限公司 天线组件及电子设备
US20200266529A1 (en) * 2019-02-14 2020-08-20 North Inc. Wearable antenna and wearable device
CN217544919U (zh) * 2022-04-18 2022-10-04 Oppo广东移动通信有限公司 天线组件以及可穿戴设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106340708A (zh) * 2016-09-30 2017-01-18 努比亚技术有限公司 一种天线结构及电子设备
US20200266529A1 (en) * 2019-02-14 2020-08-20 North Inc. Wearable antenna and wearable device
CN110504528A (zh) * 2019-08-22 2019-11-26 出门问问信息科技有限公司 一种天线结构及具有该天线结构的可穿戴设备
CN110994158A (zh) * 2019-12-26 2020-04-10 西安易朴通讯技术有限公司 天线组件及电子设备
CN217544919U (zh) * 2022-04-18 2022-10-04 Oppo广东移动通信有限公司 天线组件以及可穿戴设备

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