WO2018157707A1 - 一种天线结构及无线终端 - Google Patents

一种天线结构及无线终端 Download PDF

Info

Publication number
WO2018157707A1
WO2018157707A1 PCT/CN2018/075490 CN2018075490W WO2018157707A1 WO 2018157707 A1 WO2018157707 A1 WO 2018157707A1 CN 2018075490 W CN2018075490 W CN 2018075490W WO 2018157707 A1 WO2018157707 A1 WO 2018157707A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
region
groove
wireless terminal
mesh
Prior art date
Application number
PCT/CN2018/075490
Other languages
English (en)
French (fr)
Inventor
徐速
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2018157707A1 publication Critical patent/WO2018157707A1/zh

Links

Images

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/40—Radiating elements coated with or embedded in protective material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to an antenna structure and a wireless terminal.
  • Terminal antenna technology is one of the main core technologies of modern wireless communication technology.
  • the traditional single input single output (SISO) antenna system has an unbreakable bottleneck in channel capacity - the limitation of Shannon capacity.
  • SISO Single input single output
  • the size is strictly limited. Concentrating multiple antennas in a limited small space will cause great mutual coupling.
  • SISO-based Multiple-Input Multiple-Output (MIMO) antennas The efficiency is reduced and the correlation is enhanced. Therefore, how to achieve high isolation between multiple antenna elements in a limited size is a difficult point in antenna design.
  • wireless terminals such as mobile phones
  • the internal layout of wireless terminals is now compact, and most of the space is occupied by components such as batteries and RF boards, leaving little space for the antennas, which greatly increases the difficulty of antenna design; Frames, electronic components, metal back covers, etc. can adversely affect the bandwidth and efficiency of the antenna placed inside the wireless terminal.
  • the non-display area on which the antenna is placed on the display screen assembly is only suitable for wireless terminals with a sufficiently large frame size. Due to the current narrow border of the wireless terminal and the trend of no frame, it is usually necessary to place the antenna on the screen assembly of the display. Display area, however, if the antenna is placed on the display area of the screen assembly of the display, the use of traditional metal materials to make the antenna will inevitably affect the imaging and visual effects of the display, so the antenna must be placed on the display with a transparent conductive material. Make the part of the antenna. In this scheme, the use of a conductive material to form an antenna inevitably leads to loss of light transmission of the display. Generally speaking, the better the conductivity of the material, the lower the light transmittance.
  • both light transmission and conductivity are required. performance.
  • the transmissivity and the conductive performance of the antenna are designed, the difference in light transmittance between the portion where the antenna is placed in the display area on the screen assembly and the other portion where the antenna is not placed can not be improved, thereby causing the screen chromatic aberration and The problem of uneven light transmission.
  • the embodiment of the invention discloses an antenna structure and a wireless terminal, which can reduce the chromatic aberration of the screen and the unevenness of the light transmittance.
  • embodiments of the present invention adopt the following technical solutions:
  • an antenna structure that covers a wireless terminal screen assembly.
  • the antenna structure includes a base film which may be an optically transparent base film made of a material such as glass, organic resin or the like, on which a groove mesh is formed.
  • the base film comprises: an antenna region and a non-antenna region; the groove mesh of the antenna region is all connected, and the groove mesh of the antenna region is filled with a conductive material to form a radiation structure of the antenna, and the exemplary conductive material may be an indium tin oxide.
  • Transparent conductive materials such as (Indium tin oxide, ITO) and nano metal wires.
  • the groove mesh in the non-antenna region is filled with the compensation material to form a non-conductive region, wherein the difference in light transmittance between the antenna region and the non-antenna region satisfies a preset condition.
  • the antenna structure since the entire screen assembly of the wireless terminal display is covered with the film-mounted antenna structure, and the antenna structure includes the antenna area and the non-antenna area, the antenna area is filled in the groove grid of the communication.
  • the conductive material forms a radiation structure of the antenna, such that the radiation structure of the antenna structure completes the function of the antenna, and the filling compensation material in the groove grid of the non-antenna region forms a non-conductive region, because the compensation material has a certain opacity
  • the difference in light transmittance between the antenna region and the non-antenna region satisfies a preset condition, that is, the difference in translucency between the antenna region and the non-antenna region is minimized in such a manner that the antenna region and the non-antenna region are transparent.
  • the light is the same or close enough to reduce screen chromatic aberration and uneven light transmission.
  • the groove grids of the non-antenna regions are all in communication and the filled compensation material is an insulating material. If the non-antenna region forms a conductive region, it will form a coupling with the radiating structure of the antenna region, thereby affecting the signal transmitting function of the antenna. Therefore, if the groove mesh of the non-antenna region is all connected, the groove mesh is filled with an insulating material. This avoids the coupling effect between the radiating structure of the antenna region and the non-antenna region.
  • a groove mesh of a non-antenna region forms a breakpoint at a network node
  • the breakpoint partitions the groove mesh at the network node such that the groove mesh is not communicated at the network node
  • the filled compensation material is Conductive material.
  • it may be considered to use the conductive material having the same light transmittance for the antenna area and the non-antenna area, but if the non-antenna area forms the conductive area, the radiation with the antenna area
  • the structure forms a coupling, which in turn affects the signal transmission function of the antenna.
  • the groove mesh of the non-antenna region is filled with the conductive material, the groove mesh forms a break point at the network node, and the groove mesh can be formed due to the break point
  • the network node is partitioned so that the groove mesh is not connected at the network node, so that the conductive mesh can be formed after filling the groove mesh of the non-antenna region to avoid the coupling effect between the radiating structure and the non-antenna region of the antenna region.
  • the ratio of the area occupied by the break point to the area occupied by the groove grid of the non-antenna area is smaller than the first threshold, for example, A threshold can be set to 10%.
  • the difference between the duty ratio of the groove mesh of the antenna region in the antenna region and the duty ratio of the groove mesh of the non-antenna region in the non-antenna region is less than a second threshold.
  • the second threshold may be 10%, in order to make the transmittance of the antenna area and the non-antenna area close enough, the value of the second threshold should be sufficiently small.
  • the duty ratio of the groove mesh of the antenna region in the antenna region is less than a third threshold.
  • the third threshold may be 10%.
  • the third threshold should be controlled within a sufficiently small range due to the effect of the light transmittance of the screen assembly.
  • the duty cycle of the groove mesh of the non-antenna region in the non-antenna region is less than a fourth threshold, for example, the fourth threshold may be 10%, here to reduce the filling of the groove grid in the non-antenna region
  • the fourth threshold should be controlled within a sufficiently small range.
  • the base film when the base film includes a groove mesh side facing away from the wireless terminal screen assembly, a protective layer is formed on the base film, and the protective layer covers the groove mesh.
  • the side having the groove mesh is directly attached to the screen assembly through the optical gel to the screen assembly, so that the human hand can be prevented from touching the groove net.
  • the material filled in the grid has an effect on the operation of the antenna. If one side of the groove mesh is attached to the wireless terminal screen assembly, a protective layer needs to be formed on the base film, and the protective layer is an insulating material, so that the human hand can directly contact the protective layer to reduce the work of the antenna. influences.
  • an example is provided to provide a patch antenna structure, wherein the radiating structure comprises: a radiating sheet and a microstrip line; one end of the microstrip line is connected to the radiating piece, and the other end of the microstrip line is extended to the total screen
  • the feeder portion other than the portion is coupled to the feed point of the side frame of the wireless terminal.
  • the antenna structure can be applied to an electrical 4 MIMO antenna system.
  • PIFA Planar Invert F Antenna
  • the radiation structure comprises: a radiation piece, a feeder line and a ground line; one end of the feeding line is connected to the radiation piece, and the other end of the feeding line is provided.
  • a portion of the ground line is coupled to the feed point of the side frame of the wireless terminal by extending to a portion other than the screen assembly; one end of the ground line is connected to the radiation piece, and the other end of the ground line is coupled to the side frame of the wireless terminal by a portion extending beyond the screen assembly location.
  • a wireless terminal including any of the antenna structures described above.
  • FIG. 1 is a side view of a wireless terminal according to an embodiment of the present invention.
  • FIG. 2 is a top view of a wireless terminal according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an antenna area and a non-antenna area according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of another antenna area and a non-antenna area according to an embodiment of the present invention.
  • FIG. 5 is a schematic view showing a manner of attaching a base film according to an embodiment of the present invention.
  • FIG. 6 is a schematic view showing another manner of attaching a base film according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a patch antenna structure according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a 4 MIMO antenna system according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a frame of a wireless terminal using a 4 MIMO antenna system according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a return loss waveform of a 4MIMO antenna system according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a coupled power waveform using a 4 MIMO antenna system according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of an antenna efficiency waveform of a patch antenna structure according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a structure of a PIFA antenna according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of an 8 MIMO antenna system according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of a frame of a wireless terminal using an 8 MIMO antenna system according to an embodiment of the present disclosure
  • 16 is a schematic diagram of a return loss waveform of a PIFA antenna structure according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of an antenna efficiency waveform of a PIFA antenna structure according to an embodiment of the present invention.
  • the antenna structure provided by the embodiment of the present invention is used for a wireless terminal device, wherein the wireless terminal device is not limited to a terminal device having a display such as a mobile phone or a tablet computer.
  • the wireless terminal is not limited to a terminal device capable of accessing a wireless communication network such as 3G, 4G, or LTE, or may be a terminal device that performs D2D wireless communication between devices.
  • Common wireless terminals include, for example, mobile phones, tablets, notebook computers, palmtop computers, MIDs, wearable devices (such as smart watches, smart bracelets, pedometers) and the like.
  • the antenna structure includes a microstrip line type or a PIFA type MIMO antenna system.
  • the internal layout of wireless terminals (such as mobile phones) is compact, and most of the space is occupied by components such as batteries and RF boards, leaving little space for the antennas, which greatly increases the difficulty of antenna design; on the other hand, the metal frame Components such as electronic components and metal back covers can adversely affect the bandwidth and efficiency of the antenna placed inside the terminal.
  • the antenna is placed on the screen assembly, but the difference in the light transmittance between the portion where the antenna is placed on the screen assembly and other regions where the antenna is not placed may cause the screen.
  • the problem of chromatic aberration and unevenness of light transmittance is to solve the above problem.
  • Embodiments of the present invention provide an antenna structure covering a screen assembly of a wireless terminal, where the antenna area and the non-antenna area have the same or similar
  • the light rate solves the above problems very well.
  • the specific implementation is described as follows:
  • an embodiment of the present invention provides a wireless terminal including a back cover 11, a bezel 12, a screen assembly of the display 13, and an antenna structure 14.
  • the antenna structure 14 covers the screen assembly of the wireless terminal.
  • the antenna structure 14 includes a base film 141 which may be an optically transparent base film made of a material such as glass, organic resin or the like, on which a groove mesh 142 is formed.
  • the base film 141 includes: an antenna region 1411 and a non-antenna region 1412; the groove mesh of the antenna region 1411 is all connected, and the groove mesh of the antenna region 1411 is filled with a conductive material to form a radiation structure of the antenna, and an exemplary conductive material may be Transparent conductive materials such as ITO and nano metal wires are used.
  • the groove mesh of the non-antenna region 1412 is filled with a compensation material to form a non-conductive region, wherein the difference in light transmittance between the antenna region 1411 and the non-antenna region 1412 satisfies a preset condition.
  • the groove mesh can be fabricated by engraving a micron-sized groove mesh on one side of the base film by a printing method.
  • the non-antenna area can be implemented in the following two structures:
  • the groove mesh of the non-antenna region 1412 is all connected, and the filled compensation material is an insulating material. If the non-antenna region forms a conductive region, it will form a coupling with the radiating structure of the antenna region, thereby affecting the signal transmitting function of the antenna. Therefore, if the groove mesh of the non-antenna region is all connected, the groove mesh is filled with an insulating material. This avoids the coupling effect between the radiating structure of the antenna region and the non-antenna region.
  • the groove mesh of the non-antenna region 1412 forms a breakpoint a at the network node, and the breakpoint a blocks the groove mesh at the network node so that the groove mesh is not at the network node.
  • Unicom and the filled compensation material is a conductive material.
  • the structure forms a coupling, which in turn affects the signal transmission function of the antenna.
  • the groove mesh of the non-antenna region is filled with the conductive material, the groove mesh forms a break point at the network node, and the groove mesh can be formed due to the break point
  • the network node is partitioned so that the groove mesh is not connected at the network node, so that the conductive mesh can be formed after filling the groove mesh of the non-antenna region to avoid the coupling effect between the radiating structure and the non-antenna region of the antenna region.
  • the ratio of the area occupied by the break point to the area occupied by the groove grid of the non-antenna area is smaller than the first threshold, for example, A threshold can be set to 10%.
  • the frame 12 may be a metal frame or a non-metal frame; the antenna area may extend to an area outside the frame; the frame is provided with a feeding structure, the feeding structure is connected to the RF board, and the feeding structure and the antenna area extend to A part of the outer side of the frame is coupled; wherein, if the frame is a metal frame, in order to maintain the flatness of the frame, a slot 121 for accommodating the feed structure is required on the metal frame, wherein the feed structure may be a spring piece, a contact, or the like.
  • the width of the slit 121 needs to be able to accommodate a portion of the antenna region that extends to the outside of the bezel.
  • a dielectric coating of the same color as the border can be applied over the slit 121 to avoid chromatic aberration with the frame.
  • the antenna structure since the entire screen assembly of the wireless terminal display is covered with a film-like antenna structure, and the antenna structure includes an antenna area and a non-antenna area, the antenna area is filled in the groove grid of the communication.
  • the conductive material forms a radiation structure of the antenna, such that the radiation structure of the antenna structure completes the function of the antenna, and the filling compensation material in the groove grid of the non-antenna region forms a non-conductive region, and the compensation material has a certain opacity,
  • the difference in light transmittance between the antenna region and the non-antenna region satisfies a preset condition, that is, the difference in light transmittance between the antenna region and the non-antenna region is minimized in such a manner, so that the transmittance between the antenna region and the non-antenna region is made.
  • a preset condition that is, the difference in light transmittance between the antenna region and the non-antenna region is minimized in such a manner,
  • the duty ratio of the groove mesh of the antenna area in the antenna area and the duty ratio of the groove mesh of the non-antenna area in the non-antenna area The difference is less than the second threshold, for example the second threshold may be 10%, where the second threshold should be controlled within a sufficiently small range.
  • the duty ratio of the groove mesh of the antenna region in the antenna region is less than a third threshold, for example, the third The threshold may be 10%, where the third threshold should be controlled within a sufficiently small range.
  • the duty ratio of the groove mesh of the non-antenna region in the non-antenna region is less than the fourth threshold.
  • the fourth threshold may be 10%, where the fourth threshold should be controlled within a sufficiently small range.
  • the screen assembly having the side of the groove grid 142 facing the display 13 is directly bonded to the screen by optical gel.
  • the assembly can be used to avoid touching the material filled in the groove grid by human hands, which has an impact on the operation of the antenna.
  • FIG. 6 if one side of the groove grid 142 is attached to the screen assembly of the wireless terminal display 13, it is necessary to form a protective layer 143 on the base film.
  • the protective layer 143 is an insulating material, so that the human hand can Direct contact with the protective layer reduces the impact on the antenna's operation.
  • the base film When the base film includes a side of the groove mesh facing away from the screen assembly of the wireless terminal, a protective layer is formed on the base film, and the protective layer covers the groove mesh.
  • the base film 141 completely covers the front surface of the display, and the base film 141 further includes an opening 144 corresponding to the earpiece on the front surface of the display and the physical key position.
  • a patch antenna structure is taken as an example.
  • a patch antenna structure is provided.
  • the radiation structure of the antenna region includes: a radiation piece A1 and a microstrip line A2; and a microstrip line.
  • One end of A2 is connected to the radiation sheet A1, and the other end of the microstrip line A2 is coupled to the feeding point K1 of the side frame of the wireless terminal by a portion of the feeder extending beyond the screen assembly.
  • the antenna structure can be applied to a typical 4 MIMO antenna system.
  • FIG. 8 based on the patch antenna structure described above, the inventive embodiment provides a 4MIMO transparent antenna system on a wireless terminal.
  • the type of the MIMO antenna unit is a patch antenna structure, and the operating frequency is around 3.5 GHz.
  • the entire base film is covered with the front surface of the screen assembly of the display of the wireless terminal, and the corresponding size hole is opened at the position of the earpiece, the physical key, etc., and the graphic of the 4 MIMO antenna unit is designed and implemented at an appropriate position (a diagram can be adopted) 2 or any scheme corresponding to Figure 3).
  • the base film is PET with a light transmittance of about 91%, and the thickness thereof is about 0.125 mm.
  • the antenna structure adopts the design scheme shown in FIG. 3, and the filled conductive material is nano-scale silver powder. After mesh optimization, the antenna area is squared. Less than 0.2 Ohm/Sq.
  • each antenna unit has a geometrical size of 6mm*1.5mm (first microstrip line A2-1) and 8.5mm*0.3mm (second microstrip line A2-2). And 13.15mm*16mm (rectangular radiation sheet), wherein the first microstrip line and the second microstrip line are dimensioned mainly considering the impedance matching of the radio frequency plate of the wireless terminal and the radiation piece, so the first microstrip line and The second microstrip line can also be of other sizes as long as the impedance matching requirements of the radio frequency plate and the radiation piece are met. Except for the area where the four antenna element patterns are located, the other areas are non-antenna areas (non-conducting).
  • the frame of the side of the wireless terminal body is made of a metal material, and the frame 13 is slightly wider than the gap of the first microstrip line at the bottom end of the second microstrip line (exemplary, the slit width is 2 mm).
  • a feeding point K1 of a metal material is leaked from the slit, and the feeding point K1 is connected to the radio frequency board below the screen assembly of the display.
  • the portion exhibited by the second microstrip line is bent at 90 degrees and coupled to the feed point K1 in the slit and fixed by an optical gel.
  • the floor of the patch antenna structure can share the lower metal frame of the screen assembly.
  • the 4 MIMO antenna system When 4 antenna units are working near 3.5 GHz, the 4 MIMO antenna system is simulated.
  • the parameters used in the simulation are: the upper surface of the screen assembly to the floor thickness of 3 mm, the equivalent dielectric constant of 8, and the loss tangent of 0.028.
  • the square resistance of the antenna area is approximately 0.2 Ohm/Sq.
  • the antenna structure shown in FIG. 10 is simulated, wherein four antenna units 1, 2, 3, and 4 correspond to four antenna port terminals 1, port 2, port 3, and port 4, respectively.
  • Figure 10 shows the return loss S11, S12, S13, and S14 at each port, where the horizontal axis is the frequency (in GHz) and the vertical axis is the return loss (in dB).
  • each antenna unit return loss -6dB is 320MHz.
  • the coupling between any two antenna elements is shown, where the horizontal axis is the frequency (in GHz) and the vertical axis is the coupling loss (in dB).
  • S12 is the coupling between the port 1 and port 2 of the antenna port
  • S13 is the coupling between the port 1 and port 3 of the antenna port
  • S14 is the coupling between the port 1 and port 4 of the antenna port
  • S32 is the port of the antenna port.
  • the coupling between port 2 and S34 is the coupling between antenna port 3 and port 4. It can be seen from Fig. 11 that the isolation between any two antenna elements is lower than -10 dB.
  • Figure 12 shows the simulated antenna efficiency curve, where the horizontal axis is the frequency (in GHz, Frequency) and the vertical axis is the antenna efficiency. It can be seen that the antenna efficiency is close to 45%. If the square resistance of the antenna area is further reduced, the antenna efficiency can be further improved and optimized, and the display of the wireless terminal of the solution supports the borderless design.
  • the radiation structure of the antenna area includes: a radiation piece B1, a feed line B2, and a ground line B3; and a feed line B2.
  • One end of the feed line B1 is connected to the feed point K1 of the side frame of the wireless terminal by extending to a portion other than the screen assembly; one end of the ground line B3 is connected to the radiation piece B1, and the other end of the ground line B2 is extended by A portion other than the screen assembly is coupled to the feeding point G1 of the side frame of the wireless terminal.
  • the antenna structure can be applied to a typical 8 MIMO antenna system. As shown in FIG.
  • the inventive embodiment provides an 8MIMO transparent antenna system on a wireless terminal.
  • the type of MIMO antenna unit is a PIFA antenna structure, and the two operating frequencies are 1.8 GHz and 4.2 GHz, respectively.
  • the entire base film is covered with the front surface of the screen assembly of the display of the wireless terminal, and the corresponding size hole is opened at the position of the earpiece, the physical key, etc., and the graphic of the 8 MIMO antenna unit is designed and implemented at an appropriate position (can be used) 2 or any scheme corresponding to Figure 3).
  • the base film is PET with a light transmittance of about 91%, and the thickness thereof is about 0.125 mm.
  • the antenna structure adopts the design scheme shown in FIG.
  • the filled conductive material is nano-scale silver powder.
  • the antenna area is squared. Less than 0.2 Ohm/Sq.
  • the non-antenna region is filled with graphite nanowires.
  • the frame on the side of the body of the wireless terminal is made of a metal material, and the frame has a gap at the bottom end of the feed line B2 and the feed line B3 of each antenna unit. Referring to FIG.
  • a feeding point K1 of a metal material is leaked in a gap corresponding to the feeding line B2 of the frame 13 , and a feeding place G1 of a metal material is leaked at a gap corresponding to the grounding line B3 of the frame, and the feeding point K1 and the display point are
  • the RF board below the screen assembly is connected, and the feeding point G1 is grounded (exemplary can be connected to the lower metal frame of the screen assembly).
  • the floor (GND) of the PIFA antenna structure can share the lower metal frame of the screen assembly.
  • the portion exhibited by the feeder B2 is bent at 90 degrees and coupled to the feed point K1 in the slit and fixed by an optical gel.
  • the portion exhibited by the grounding wire B3 is bent at 90 degrees, coupled to the feeding point G1 in the slit, and fixed by an optical gel. In the gap, you can apply a dielectric coating of the same color as the border to increase the aesthetics.
  • FIG. 13 shows the dimensions of the PIFA antenna structure and the size of the clearance slot G that is opened at the display bezel.
  • Eight transparent antenna units operate near 1.8 GHz and 4.2 GHz, and the 8 MIMO antenna system is simulated.
  • the parameters used for the simulation are: antenna to ground thickness 3 mm, equivalent dielectric constant of 8, and loss tangent of 0.028.
  • the square resistance of the antenna area is about 0.1 Ohm/Sq.
  • FIG. 14 The antenna structure shown in Figure 14 is simulated.
  • Figure 16 shows the simulated return loss curve.
  • the horizontal axis is the frequency (in GHz) and the vertical axis is the return loss (Return Loss). dB), in which the return loss of the eight antenna elements is close, only one of which is shown as an example.
  • Figure 17 shows the simulated antenna efficiency curve, where the horizontal axis is the frequency (in GHz, Frequency) and the vertical axis is the antenna efficiency.
  • the antenna efficiency is up to 35% at 1.8 GHz and over 50% at 4.2 GHz. If the square resistance of the transparent conductive film is further reduced, the antenna efficiency can be further improved and optimized.

Landscapes

  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

本发明实施例公开一种天线结构及无线终端，涉及无线通信技术领域，能够减少屏幕色差以及透光性不均匀现象。该天线结构，覆盖无线终端的屏幕总成，所述天线结构包括基膜，所述基膜上形成有凹槽网格；所述基膜包括：天线区域和非天线区域；所述天线区域的凹槽网格全部联通，所述天线区域的凹槽网格中填充导电材料形成天线的辐射结构；所述非天线区域的凹槽网格中填充补偿材料形成非导电区域，其中，所述天线区域与所述非天线区域的透光性的差满足预设条件。本发明的实施例用于无线终端。

Description

一种天线结构及无线终端
本申请要求于2017年03月01日提交中国专利局、申请号为201710118184.5、申请名称为“一种天线结构及无线终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域，尤其涉及一种天线结构及无线终端。
背景技术
终端天线技术是现代无线通信技术的主要核心技术之一，传统的单输入单输出(single input single output，SISO)天线系统在信道容量上具有一个不可突破的瓶颈——香农容量的限制。从理论上说，在天线相关性很低的情况下(要求天线之间距离满足大于半波长条件)，天线数量越多，系统吞吐率会随着天线的数量成倍的增加。但是对于无线终端，尺寸是严格限制的，将多个天线集中在有限的小空间内，将会引起很大的互耦，基于SISO的多输入多输出(Multiple-Input Multiple-Output，MIMO)天线的效率下降，相关性增强。因此如何在有限的尺寸下，实现多个天线单元之间的高隔离问题是天线设计的一个难点。特别是，现在无线终端(如移动电话)内部的布局紧凑，大部分空间被电池、射频板等元器件占用，留给天线的空间很小，极大的加大了天线设计难度；此外，金属边框、电子元器件、金属后盖等部件会对无线终端内部放置的天线的带宽和效率造成不利影响。
为了获得更多的天线安置空间及更好的天线性能，将天线放置在显示器的屏幕总成上显示区域的一部分区域或显示器屏幕总成上的非显示区域是一种可行的方法。
将天线放置在显示器屏幕总成上的非显示区域仅适用于边框尺寸足够大的无线终端，由于当前无线终端窄边框以及无边框化的发展趋势，通常需要将天线放置在显示器的屏幕总成上的显示区域，然而若将天线放置在显示器的屏幕总成上的显示区域，则使用传统金属材料来制作天线必然会影响显示器的成像和视觉效果，因此在显示器上放置天线必须使用透明导电材料来制作天线的部分。这种方案中使用导电材料制作天线必然带来显示器透光性的损耗，一般来说，导电性能越好的材料，透光性越低，因此，在天线设计过程中需要兼顾透光性和导电性能。然而，无论如何设计天线的透光性和导电性能，由于并不能改善屏幕总成上的显示区域中放置天线的部分与未放置天线的其他区域的透光性的差异，进而会造成屏幕色差以及透光性不均匀现象的问题。
发明内容
本发明实施例公开一种天线结构及无线终端，能够减少屏幕色差以及透光性不均匀现象。为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，提供一种天线结构，该天线结构覆盖无线终端屏幕总成。该天线结构包括基膜，该基膜可以采用诸如玻璃、有机树脂等材料制作的光学透明基膜， 该基膜上形成有凹槽网格。该基膜包括：天线区域和非天线区域；天线区域的凹槽网格全部联通，天线区域的凹槽网格中填充导电材料形成天线的辐射结构，示例性的导电材料可以采用铟锡氧化物(Indium tin oxide，ITO)、纳米金属线等透明导电材料。非天线区域的凹槽网格中填充补偿材料形成非导电区域，其中，天线区域与非天线区域的透光性的差满足预设条件。
这样，在上述方案中由于在无线终端显示器的整个屏幕总成上均覆盖有膜装的天线结构，并且天线结构包括天线区域和非天线区域，在天线区域通过在联通的凹槽网格中填充的导电材料形成天线的辐射结构，这样天线结构的辐射结构完成天线的功能，而在非天线区域的凹槽网格中的填充补偿材料形成非导电区域，由于补偿材料有一定的不透光性，进而使得天线区域与非天线区域的透光性的差满足预设条件，即通过这样的方式尽量减少天线区域与非天线区域的透透光性的差异，使得天线区域与非天线区域的透光性相同或足够接近，从而减少屏幕色差以及透光性不均匀现象。
提供一种示例，非天线区域的凹槽网格全部联通，并且填充的补偿材料为绝缘材料。由于若非天线区域形成导电区域的话，会与天线区域的辐射结构形成耦合，进而影响天线的信号发射功能，因此若非天线区域的凹槽网格全部联通则使用绝缘材料对凹槽网格进行填充，这样避免了天线区域的辐射结构与非天线区域发生耦合效应。
提供一种示例，非天线区域的凹槽网格在网络节点处形成断点，断点将凹槽网格在网络节点隔断使得凹槽网格在网络节点处不联通，并且填充的补偿材料为导电材料。为使得天线区域和非天线区域的通过率足够接近，可以考虑对天线区域和非天线区域采用具有相同透光率的导电材料填充，然而由于若非天线区域形成导电区域的话，会与天线区域的辐射结构形成耦合，进而影响天线的信号发射功能，因此若对非天线区域的凹槽网格填充导电材料，则将凹槽网格在网络节点处形成断点，由于断点可以将凹槽网格在网络节点隔断使得凹槽网格在网络节点处不联通，这样可以避免对非天线区域的凹槽网格填充导电材料后形成导电区域，避免了天线区域的辐射结构与非天线区域发生耦合效应。进一步的，为使得天线区域与非天线区域的透光率尽量保持一致，在非天线区域，断点所占面积与非天线区域的凹槽网格所占面积的比值小于第一阈值，例如第一阈值可以设置为10％。
提供一种示例，天线区域的凹槽网格在天线区域的占空比与非天线区域的凹槽网格在非天线区域的占空比的差值小于第二阈值，例如第二阈值可以为10％，为使得天线区域与非天线区域的透光率足够接近，第二阈值的取值应该足够小。
提供一种示例，天线区域的凹槽网格在天线区域的占空比小于第三阈值，例如，第三阈值可以为10％，这里为了降低天线区域的凹槽网格中填充的导电材料对屏幕总成的透光率的影响，第三阈值应该控制在足够小的范围内。
提供一种示例，非天线区域的凹槽网格在非天线区域的占空比小于第四阈值，例如，第四阈值可以为10％，这里为了降低非天线区域的凹槽网格中填充的补偿材料对屏幕总成的透光率的影响，第四阈值应该控制在足够小的范围内。
提供一种示例，基膜包含凹槽网格的一面背向无线终端屏幕总成帖附时，基膜上还形成有保护层，保护层覆盖凹槽网格。通常，在将基膜贴附至屏幕总成时，直接将具有凹槽网格的一侧朝向屏幕总成通过光学凝胶粘接在屏幕总成即可，这样可以避免人手触碰凹槽网格中填充的材料，对天线的工作产生影响。若将凹槽网格的一面背向无线终端屏幕总成帖附，则需要在基膜上形成保护层，该保护层为绝缘材料，这样人手可以直接与保护层接触，减少对天线的工作产生影响。
提供一种示例，提供一种贴片天线结构，该方案中，辐射结构包括：辐射片和微带线；微带线的一端连接所述辐射片，微带线的另一端通过延长至屏幕总成以外的馈线部分耦合至无线终端侧框的馈电点。其中，该种天线结构可以应用于电性的4MIMO天线系统中。
提供一种示例，提供一种平面倒F天线(Planar Invert F Antenna，PIFA)天线结构，该方案中，辐射结构包括：辐射片、馈线和接地线；馈线的一端连接辐射片，馈线的另一端通过延长至屏幕总成以外的部分耦合至无线终端侧框的馈电点；接地线的一端连接辐射片，接地线的另一端通过延长至屏幕总成以外的部分耦合至无线终端侧框的馈地点。
第二方面，提供一种无线终端，包括上述任意一种天线结构。
附图说明
图1为本发明实施例提供的无线终端的侧视拆解图；
图2为本发明实施例提供的无线终端的俯视图；
图3为本发明实施例提供的一种天线区域以及非天线区域的结构示意图；
图4为本发明实施例提供的另一种天线区域以及非天线区域的结构示意图；
图5为本发明实施例提供的一种基膜的贴附方式示意图；
图6为本发明实施例提供的另一种基膜的贴附方式示意图；
图7为本发明实施例提供的一种贴片天线结构的示意图；
图8为本发明实施例提供的4MIMO天线系统的结构示意图；
图9为本发明实施例提供的一种使用4MIMO天线系统的无线终端的边框结构示意图；
图10为本发明实施例提供的一种使用4MIMO天线系统的回波损耗波形示意图；
图11为本发明实施例提供的一种使用4MIMO天线系统的耦合功率波形示意图；
图12为本发明实施例提供的贴片天线结构的天线效率波形示意图；
图13为本发明实施例提供的一种PIFA天线结构的示意图；
图14为本发明实施例提供的8MIMO天线系统的结构示意图；
图15为本发明实施例提供的一种使用8MIMO天线系统的无线终端的边框结构示意图；
图16为本发明实施例提供的PIFA天线结构的回波损耗波形示意图；
图17为本发明实施例提供的PIFA天线结构的天线效率波形示意图。
具体实施方式
下面结合附图，对本发明实施例进行表述。本发明的实施例应用到的技术术语如表一所示：
表一
Figure PCTCN2018075490-appb-000001
本发明的实施例提供的天线结构用于无线终端设备，其中该无线终端设备不限于为手机、平板电脑等具有显示器的终端设备。该无线终端不限于能够接入3G、4G、LTE等无线通信网络的终端设备，还可以是进行设备间D2D无线通信的终端设备。常见的无线终端例如包括：手机、平板电脑、笔记本电脑、掌上电脑、MID、可穿戴设备(例如智能手表、智能手环、计步器)等。该天线结构包括微带线类型或者PIFA类型的MIMO天线系统。
现在无线终端(如移动电话)内部的布局紧凑，大部分空间被电池、射频板等元器件占用，留给天线的空间很小，极大的加大了天线设计难度；另一方面，金属边框、电子元器件、金属后盖等部件会对终端内部放置的天线的带宽和效率造成不利影响。为了获得更多的天线安置空间及更好的天线性能，将天线放置在屏幕总成，然而屏幕总成上放置天线的部分与未放置天线的其他区域的透光性的差异，进而会造成屏幕色差以及透光率不均匀现象的问题，为解决上述问题，本发明的实施例提供一种覆盖无线终端屏幕总成的天线结构，该天线结构的天线区域和非天线区域具有相同或近似的透光率，很好的解决了上述的问题，具体实现方式说明如下：
参照图1所示，本发明的实施例提供一种无线终端，包括后盖11、边框12、显示器13的屏幕总成以及天线结构14。
参照图2所示，天线结构14覆盖无线终端的屏幕总成。该天线结构14包括基膜141，该基膜141可以采用诸如玻璃、有机树脂等材料制作的光学透明基膜，该基膜上形成有凹槽网格142。该基膜141包括：天线区域1411和非天线区域1412；天线区域1411的凹槽网格全部联通，天线区域1411的凹槽网格中填充导电材料形成天线的辐射结构，示例性的导电材料可以采用ITO、纳米金属线等透明导电材料。非天线区域1412的凹槽网格中填充补偿材料形成非导电区域，其中，天线区域1411与非天线区域1412的透光性的差满足预设条件。
其中，凹槽网格的制作工艺可以为：采用印刷法在基膜的一侧雕刻出微米级的凹槽网格。此外非天线区域可以采用如下两种结构实现：
结构一：具体的如图3，非天线区域1412的凹槽网格全部联通，并且填充的补偿材料为绝缘材料。由于若非天线区域形成导电区域的话，会与天线区域的辐射结构形成耦合，进而影响天线的信号发射功能，因此若非天线区域的凹槽网格全部联通则使用绝缘材料对凹槽网格进行填充，这样避免了天线区域的辐射结构与非天线区域发生耦合效应。
结构二：具体如图4所示，非天线区域1412的凹槽网格在网络节点处形成断点a，断点a将凹槽网格在网络节点隔断使得凹槽网格在网络节点处不联通，并且填充的补偿材料为导电材料。为使得天线区域和非天线区域的通过率足够接近，可以考虑对天线区域和非天线区域采用具有相同透光率的导电材料填充，然而由于若非天线区域形成导电区域的话，会与天线区域的辐射结构形成耦合，进而影响天线的信号发射功能，因此若对非天线区域的凹槽网格填充导电材料，则将凹槽网格在网络节点处形成断点，由于断点可以将凹槽网格在网络节点隔断使得凹槽网格在网络节点处不联通，这样可以避免对非天线区域的凹槽网格填充导电材料后形成导电区域，避免了天线区域的辐射结构与非天线区域发生耦合效应。进一步的，为使得天线区域与非天线区域的透光率尽量保持一致，在非天线区域，断点所占面积与非天线区域的凹槽网格所占面积的比值小于第一阈值，例如第一阈值可以设置为10％。
参照图1所示，边框12可以为金属边框或非金属边框；天线区域可以延伸到边框外侧的区域；边框上设置有馈电结构，馈电结构连接射频板，馈电结构与天线区域延伸到边框外侧的部分耦合；其中，若边框为金属边框，为保持边框的平整性，需要在金属边框上开具容纳馈电结构的缝隙121，其中馈电结构可以为弹片、触点等。缝隙121的宽度需要能够容纳天线区域延伸到边框外侧的部分。最后，在缝隙121上方可以涂覆与边框色泽相同的电介质涂料，避免与边框产生色差。
这样，在上述方案中由于在无线终端显示器的整个屏幕总成均覆盖有膜状的天线结构，并且天线结构包括天线区域和非天线区域，在天线区域通过在联通的凹槽网格中填充的导电材料形成天线的辐射结构，这样天线结构的辐射结构完成天线的功能，而在非天线区域的凹槽网格中的填充补偿材料形成非导电区域，由于补偿材料有一定的不透光性，进而使得天线区域与非天线区域的透光性的差满足预设条件，即通过这样的方式尽量减少天线区域与非天线区域的透光性的差 异，使得天线区域与非天线区域的透光性相同或足够接近，从而减少屏幕色差以及透光性不均匀现象。
具体的，为使得天线区域与非天线区域的透光率足够接近，天线区域的凹槽网格在天线区域的占空比与非天线区域的凹槽网格在非天线区域的占空比的差值小于第二阈值，例如第二阈值可以为10％，这里，第二阈值应该控制在足够小的范围内。此外，为了降低天线区域的凹槽网格中填充的导电材料对屏幕总成的透光率的影响，天线区域的凹槽网格在天线区域的占空比小于第三阈值，例如，第三阈值可以为10％，这里，第三阈值应该控制在足够小的范围内。基于类似的原因为了降低非天线区域的凹槽网格中填充的补偿材料对屏幕总成的透光率的影响，非天线区域的凹槽网格在非天线区域的占空比小于第四阈值，例如，第四阈值可以为10％，这里第四阈值应该控制在足够小的范围内。
参照图5所示，通常，在将基膜141贴附至显示器13的屏幕总成时，直接将具有凹槽网格142的一侧朝向显示器13的屏幕总成通过光学凝胶粘接在屏幕总成即可，这样可以避免人手触碰凹槽网格中填充的材料，对天线的工作产生影响。参照图6所示，若将凹槽网格142的一面背向无线终端显示器13的屏幕总成帖附，则需要在基膜上形成保护层143，该保护层143为绝缘材料，这样人手可以直接与保护层接触，减少对天线的工作产生影响。基膜包含凹槽网格的一面背向无线终端的屏幕总成帖附时，基膜上还形成有保护层，保护层覆盖凹槽网格。此外，为保证显示器前表面的平整性，基膜141完全覆盖显示器的前表面，基膜141上还包括对应显示器的前表面上的听筒、实体键位置的开孔144。
具体的以贴片(patch)天线结构为例，参照图7所示，提供一种贴片天线结构，该方案中，天线区域的辐射结构包括：辐射片A1和微带线A2；微带线A2的一端连接辐射片A1，微带线A2的另一端通过延长至屏幕总成以外的馈线部分耦合无线终端侧框的馈电点K1。其中，该种天线结构可以应用于典型的4MIMO天线系统中。如图8所示，基于上述的patch天线结构，发明实施例提供一个无线终端上的4MIMO透明天线系统。MIMO天线单元的类型为Patch天线结构，工作频率为3.5GHz附近。整块基膜布满无线终端的显示器的屏幕总成的前表面，并在听筒、实体键等位置开相应大小的孔，并在适当位置利用设计实施4个MIMO天线单元的图形(可以采用图2或图3对应的任一方案)。基膜为透光率约为91％的PET，其厚度约为0.125mm，其中天线结构采用图3所示设计方案，填充的导电材料为纳米级银粉，经网格优化后，天线区域方阻小于0.2Ohm/Sq。基膜上共有4个天线单元，每个天线单元的天线区域的几何尺寸分别为6mm*1.5mm(第一微带线A2-1)，8.5mm*0.3mm(第二微带线A2-2)，以及13.15mm*16mm(矩形辐射片)，其中第一微带线和第二微带线的尺寸设计主要是考虑无线终端的射频板与辐射片的阻抗匹配，因此第一微带线和第二微带线也可以是其他尺寸，只要满足射频板与辐射片的阻抗匹配需求即可。除了四个天线单元图形所在区域，其他区域为非天线区域(不导电)。这里无线终端机身侧边的边框采用金属材质，该边框13在第二微带线底端位置开略宽于第一微带线的缝隙(示例性的，采用的缝隙宽度为2mm)。参照图9所示，缝隙处漏出金属材质的馈电 点K1，馈电点K1与显示器的屏幕总成下方的射频板相连。第二微带线展出的部分经90度弯曲后与缝隙中的馈电点K1耦合，并通过光学凝胶固定。安装完成后，在缝隙处，可以涂抹与边框相同颜色的电介质涂料，增加美观度。其中该方案中，贴片(patch)天线结构的地板可以共用屏幕总成的下金属框。
4个天线单元均工作在3.5GHz附近时，对4MIMO天线系统进行仿真，其中仿真所用参数为：屏幕总成的上表面到地板厚度3mm，等效介电常数为8，损耗正切为0.028。天线区域的方阻约为0.2Ohm/Sq。在上述条件下，对如图10所示的天线结构进行仿真测试，其中四个天线单元1、2、3、4，分别对应四个天线端口端1、端口2、端口3和端口4，如图10所示，示出了在各个端口处的回波损耗S11、S12、S13以及S14，其中横轴为频率(Frequency，单位GHz)，纵轴为回波损耗(Return Loss，单位dB)可以看出每个天线单元回波损耗-6dB的带宽为320MHz。另外参照图11所示，示出了任一两个天线单元之间的耦合，其中横轴为频率(Frequency，单位GHz)，纵轴为耦合功率(Return Loss，单位dB)。S12为天线端口端口1与端口2之间的耦合情况，S13为天线端口端口1与端口3之间的耦合情况，S14为天线端口端口1与端口4之间的耦合情况，S32为天线端口端口3与端口2之间的耦合情况以及S34为天线端口端口3与端口4之间的耦合情况，由图11可以看出任意两个天线单元间的隔离低于-10dB。图12给出了仿真得到的天线效率曲线，其中横轴为频率(单位GHz，Frequency)，纵轴为天线效率，可以看出天线效率最高接近45％。如果天线区域的方阻进一步降低，天线效率可以进一步得到提升优化，该方案的无线终端的显示器支持无边框设计。
具体的以平面倒F天线(Planar Invert F Antenna，PIFA)天线结构为例，该方案中，参照图13所示，天线区域的辐射结构包括：辐射片B1、馈线B2和接地线B3；馈线B2的一端连接辐射片B1，馈线B2的另一端通过延长至屏幕总成以外的部分耦合无线终端侧框的馈电点K1；接地线B3的一端连接辐射片B1，接地线B2的另一端通过延长至屏幕总成以外的部分耦合无线终端侧框的馈地点G1。其中，该种天线结构可以应用于典型的8MIMO天线系统中。如图14所示，基于上述的PIFA天线结构，发明实施例提供一个无线终端上的8MIMO透明天线系统。MIMO天线单元的类型为PIFA天线结构，两个工作频率分别为1.8GHz和4.2GHz。整块基膜布满无线终端的显示器的屏幕总成的前表面，并在听筒、实体键等位置开相应大小的孔，并在适当位置利用设计实施8个MIMO天线单元的图形(可以采用图2或图3对应的任一方案)。基膜为透光率约为91％的PET，其厚度约为0.125mm，其中天线结构采用图3所示设计方案，填充的导电材料为纳米级银粉，经网格优化后，天线区域方阻小于0.2Ohm/Sq。非天线区域填充石墨纳米线。基膜上共有8个天线单元，每个天线单元位于屏幕总成的天线区域的几何尺寸如图13所示。除了8个天线单元图形所在区域，其他区域为非天线区域(不导电)。无线终端机身侧边的边框采用金属材质，该边框在在每一个天线单元的馈线B2和馈地线B3底端位置各开一条缝隙。参照图15所示，该边框13上馈线B2对应的缝隙处漏出金属材质的馈电点K1，该边框上接地线B3对应的 缝隙处漏出金属材质的馈地点G1，馈电点K1与显示器的屏幕总成下方的射频板相连，馈地点G1接地(示例性的可以连接屏幕总成的下金属框)。其中该方案中，PIFA天线结构的地板(GND)可以共用屏幕总成的下金属框。馈线B2展出的部分经90度弯曲后与缝隙中的馈电点K1耦合，并通过光学凝胶固定。接地线B3展出的部分经90度弯曲后与缝隙中的馈地点G1耦合，并通过光学凝胶固定。在缝隙处，可以涂抹与边框相同颜色的电介质涂料，增加美观度。
该方案中，由于PIFA天线结构的地板需要设计净空槽G以辅助天线进行有效辐射，而净空槽G不能设计在屏幕总成的显示区域，因此，需要保证屏幕边框的存在以容纳净空槽，图13示出了PIFA天线结构的尺寸，以及在显示器边框开具的净空槽G的尺寸。8个透明天线单元均工作在1.8GHz和4.2GHz附近，对8MIMO天线系统进行仿真，其中仿真所用参数为：天线到地厚度3mm，等效介电常数为8，损耗正切为0.028。天线区域的方阻约为0.1Ohm/Sq。
对如图14所示的天线结构进行仿真测试，如图16示出了其仿真的回波损耗曲线，其中横轴为频率(Frequency，单位GHz)，纵轴为回波损耗(Return Loss，单位dB)，其中八个天线单元的回波损耗接近，图中仅示出一条作为示例。图17给出了仿真得到的天线效率曲线，其中横轴为频率(单位GHz，Frequency)，纵轴为天线效率。右图17可以看出，1.8GHz处天线效率最高达到35％，4.2GHz附近效率超过50％。如果透明导电薄膜的方阻进一步降低，天线效率可以进一步得到提升优化。
以上，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (11)

  1. 一种天线结构，其特征在于，所述天线结构覆盖无线终端的屏幕总成，所述天线结构包括基膜，所述基膜上形成有凹槽网格；
    所述基膜包括：天线区域和非天线区域；
    所述天线区域的凹槽网格全部联通，所述天线区域的凹槽网格中填充导电材料形成天线的辐射结构；
    所述非天线区域的凹槽网格中填充补偿材料形成非导电区域，其中，所述天线区域与所述非天线区域的透光性的差满足预设条件。
  2. 根据权利要求1所述的天线结构，其特征在于，所述非天线区域的凹槽网格全部联通，并且填充的所述补偿材料为绝缘材料。
  3. 根据权利要求1所述的天线结构，其特征在于，所述非天线区域的凹槽网格在网络节点处形成断点，所述断点将所述凹槽网格在网络节点隔断使得凹槽网格在网络节点处不联通，并且填充的所述补偿材料为所述导电材料。
  4. 根据权利要求3所述的天线结构，其特征在于，在所述非天线区域，所述断点所占面积与所述非天线区域的凹槽网格所占面积的比值小于第一阈值。
  5. 根据权利要求1所述的天线结构，其特征在于，所述天线区域的凹槽网格在所述天线区域的占空比与所述非天线区域的凹槽网格在所述非天线区域的占空比的差值小于第二阈值。
  6. 根据权利要求1所述的天线结构，其特征在于，所述天线区域的凹槽网格在所述天线区域的占空比小于第三阈值。
  7. 根据权利要求1所述的天线结构，其特征在于，所述非天线区域的凹槽网格在所述非天线区域的占空比小于第四阈值。
  8. 根据权利要求1所述的天线结构，其特征在于，所述基膜包含凹槽网格的一面背向所述无线终端的屏幕总成帖附时，所述基膜上还形成有保护层，所述保护层覆盖所述凹槽网格。
  9. 根据权利要求1所述的天线结构，其特征在于，所述辐射结构包括：辐射片和微带线；
    所述微带线的一端连接所述辐射片，所述微带线的另一端通过延长至所述屏幕总成以外的馈线部分耦合至无线终端侧框的馈电点。
  10. 根据权利要求1所述的天线结构，其特征在于，所述辐射结构包括：辐射片、馈线和接地线；
    所述馈线的一端连接所述辐射片，所述馈线的另一端通过延长至所述屏幕总成以外的部分耦合至所述无线终端侧框的馈电点；
    所述接地线的一端连接辐射片，所述接地线的另一端通过延长至所述屏幕总成以外的部分耦合至所述无线终端侧框的馈地点。
  11. 一种无线终端，其特征在于，包括权利要求1-10任意一项所述的天线结构。
PCT/CN2018/075490 2017-03-01 2018-02-06 一种天线结构及无线终端 WO2018157707A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710118184.5 2017-03-01
CN201710118184.5A CN108539386B (zh) 2017-03-01 2017-03-01 一种天线结构及无线终端

Publications (1)

Publication Number Publication Date
WO2018157707A1 true WO2018157707A1 (zh) 2018-09-07

Family

ID=63369760

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/075490 WO2018157707A1 (zh) 2017-03-01 2018-02-06 一种天线结构及无线终端

Country Status (2)

Country Link
CN (1) CN108539386B (zh)
WO (1) WO2018157707A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4145623A4 (en) * 2020-05-21 2023-11-01 Huawei Technologies Co., Ltd. PACKAGE STRUCTURE, ELECTRONIC DEVICE AND METHOD FOR PREPARING PACKAGE STRUCTURE

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109904592B (zh) * 2019-04-02 2021-07-20 维沃移动通信有限公司 一种天线结构及通信终端
CN111952717B (zh) * 2019-05-15 2021-10-26 华为技术有限公司 一种电子设备
CN110519953A (zh) * 2019-07-27 2019-11-29 南昌欧菲光科技有限公司 电子设备及其盖板
CN110519954A (zh) * 2019-07-27 2019-11-29 南昌欧菲光科技有限公司 电子设备及其盖板
CN110519955A (zh) * 2019-07-27 2019-11-29 南昌欧菲光科技有限公司 电子设备及其盖板
WO2021102698A1 (zh) * 2019-11-26 2021-06-03 南昌欧菲光科技有限公司 触控屏、触控显示器及电子设备
CN210984952U (zh) * 2019-12-06 2020-07-10 昇印光电（昆山）股份有限公司 一种透明天线
CN112201946B (zh) * 2020-09-18 2023-01-10 安徽精卓光显技术有限责任公司 智能穿戴设备及用于智能穿戴设备的透明天线
CN112153194B (zh) * 2020-09-25 2022-05-17 Oppo广东移动通信有限公司 电子设备
CN112421207B (zh) * 2020-10-28 2022-11-25 维沃移动通信有限公司 显示屏模组及电子设备
CN113448394A (zh) * 2021-06-29 2021-09-28 维沃移动通信有限公司 电子设备及其控制方法、控制装置和可读存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101180765A (zh) * 2005-04-01 2008-05-14 日本写真印刷株式会社 显示器用透明天线和带天线的显示器用透光性构件以及带天线的壳体用构件
CN102749771A (zh) * 2012-04-06 2012-10-24 信利工业(汕尾)有限公司 一种集成nfc天线的薄膜晶体管显示器
CN104345938A (zh) * 2013-07-31 2015-02-11 南昌欧菲光科技有限公司 一种透明导电膜及其引线电极

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140030120A (ko) * 2010-12-16 2014-03-11 쓰리엠 이노베이티브 프로퍼티즈 컴파니 투명한 미세 패턴화된 rfid 안테나 및 이를 포함하는 물품
KR20160080444A (ko) * 2014-12-29 2016-07-08 삼성전자주식회사 안테나 장치 및 그를 구비하는 전자 장치
US10551949B2 (en) * 2015-05-08 2020-02-04 Intel Corporation Display integrated antenna

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101180765A (zh) * 2005-04-01 2008-05-14 日本写真印刷株式会社 显示器用透明天线和带天线的显示器用透光性构件以及带天线的壳体用构件
CN102749771A (zh) * 2012-04-06 2012-10-24 信利工业(汕尾)有限公司 一种集成nfc天线的薄膜晶体管显示器
CN104345938A (zh) * 2013-07-31 2015-02-11 南昌欧菲光科技有限公司 一种透明导电膜及其引线电极

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4145623A4 (en) * 2020-05-21 2023-11-01 Huawei Technologies Co., Ltd. PACKAGE STRUCTURE, ELECTRONIC DEVICE AND METHOD FOR PREPARING PACKAGE STRUCTURE

Also Published As

Publication number Publication date
CN108539386A (zh) 2018-09-14
CN108539386B (zh) 2020-02-21

Similar Documents

Publication Publication Date Title
WO2018157707A1 (zh) 一种天线结构及无线终端
WO2021023182A1 (zh) 天线模组及电子设备
WO2017092496A1 (zh) 终端壳体及终端
WO2020024659A1 (zh) 天线系统及移动终端
CN107066051B (zh) 一种移动电子设备及其显示屏
WO2020216187A1 (zh) 高度集成天线设计的无线终端设备
WO2020135176A1 (zh) 无线电子通信设备
CN112259585B (zh) 显示面板及显示设备
WO2022143777A1 (zh) 贴片天线及电子设备
CN214627565U (zh) 一种电子设备
JP7480341B2 (ja) アンテナモジュール及び電子機器
CN103327139B (zh) 电子设备及其构成方法
JP2015534417A (ja) アンテナガラスカバーを有する電子装置
CN207441967U (zh) 一种小体积金属天线
WO2021027534A1 (zh) 一种触摸屏及电子设备
CN109301476A (zh) 一种金属背盖平板lte超带宽天线
TW202215709A (zh) 透明天線及顯示器模組
TW202205740A (zh) 透明天線、天線陣列及顯示器模組
EP4068514B1 (en) Electronic device
CN114498053A (zh) 毫米波超材料混合透明天线及使用其的显示单元
CN111725611B (zh) 双频天线结构及显示面板
CN208862179U (zh) 一种金属背盖平板lte超带宽天线
CN108879084A (zh) 天线组件及具有此天线组件的无线通信电子设备
CN105449347A (zh) 一种天线以及通讯电子设备
US10594018B2 (en) Antenna structure of a communications device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18760758

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18760758

Country of ref document: EP

Kind code of ref document: A1