CN109904592B - Antenna structure and communication terminal - Google Patents
Antenna structure and communication terminal Download PDFInfo
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- CN109904592B CN109904592B CN201910261492.2A CN201910261492A CN109904592B CN 109904592 B CN109904592 B CN 109904592B CN 201910261492 A CN201910261492 A CN 201910261492A CN 109904592 B CN109904592 B CN 109904592B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/02—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/28—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of two or more substantially straight conductive elements
- H01Q19/30—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of two or more substantially straight conductive elements the primary active element being centre-fed and substantially straight, e.g. Yagi antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
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Abstract
The invention provides an antenna structure and a communication terminal, wherein the antenna structure comprises: the antenna comprises a first antenna unit, a substrate, a metal grid layer and a second antenna unit; the first antenna unit is arranged on the first surface of the substrate, and the first feeding point is arranged on the first antenna unit; the metal grid layer is arranged on a second surface of the substrate, and the second surface and the first surface are opposite; the substrate comprises a side wall, two ends of the side wall are respectively connected with the first surface and the second surface; the second antenna unit is arranged on the substrate, no overlapping area exists between the second antenna unit and the first antenna unit and between the second antenna unit and the metal grid layer, and a second feeding point is arranged on the second antenna unit. Therefore, the first antenna unit and the second antenna unit are arranged, so that the coverage range of the antenna can be expanded, and the wireless communication experience is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an antenna structure and a communication terminal.
Background
With the rapid development of terminal technology, communication terminals have become an essential tool in people's life, and bring great convenience to various aspects of user's life. With the development of communication technology, the application scenarios of the communication terminal are more and more abundant, so that the requirements on the number of antennas on the communication terminal are more and more, and the performance requirements are also higher and more. However, in the prior art, the radiation performance of the antenna of the communication terminal is poor.
Disclosure of Invention
The embodiment of the invention provides an antenna structure and a communication terminal, which aim to solve the problem that the antenna radiation performance of the communication terminal is poor in the prior art.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an antenna structure, including: the antenna comprises a first antenna unit, a substrate, a metal grid layer and a second antenna unit;
the first antenna unit is arranged on the first surface of the substrate, and the first feeding point is arranged on the first antenna unit;
the metal grid layer is arranged on a second surface of the substrate, and the second surface and the first surface are opposite;
the substrate comprises a side wall, two ends of the side wall are respectively connected with the first surface and the second surface;
the second antenna unit is arranged on the substrate, no overlapping area exists between the second antenna unit and the first antenna unit and between the second antenna unit and the metal grid layer, and a second feeding point is arranged on the second antenna unit.
In a second aspect, an embodiment of the present invention further provides a screen, including the above antenna structure.
In a third aspect, an embodiment of the present invention further provides a communication terminal, including the above antenna structure.
An antenna structure according to an embodiment of the present invention includes: the antenna comprises a first antenna unit, a substrate, a metal grid layer and a second antenna unit; the first antenna unit is arranged on the first surface of the substrate, and the first feeding point is arranged on the first antenna unit; the metal grid layer is arranged on a second surface of the substrate, and the second surface and the first surface are opposite; the substrate comprises a side wall, two ends of the side wall are respectively connected with the first surface and the second surface; the second antenna unit is arranged on the substrate, no overlapping area exists between the second antenna unit and the first antenna unit and between the second antenna unit and the metal grid layer, and a second feeding point is arranged on the second antenna unit. Therefore, the first antenna unit and the second antenna unit are arranged, so that the coverage range of the antenna can be expanded, and the wireless communication experience is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 3 is a third schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 4 is a fourth schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 5 is a fifth schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 6 is a sixth schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 7 is a seventh schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 8 is an eighth schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 9 is a ninth schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 10 is a tenth schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 11 is an eleventh schematic diagram illustrating an antenna structure according to an embodiment of the present invention;
fig. 12 is a twelfth schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 13 is a thirteen schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 14 is a fourteenth schematic structural diagram of an antenna structure according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an antenna structure provided in an embodiment of the present invention, and as shown in fig. 1, includes a first antenna unit 1, a substrate 2, a metal mesh layer 3, and a second antenna unit 4; the first antenna element 1 is arranged on the first surface of the substrate 2, and the first feeding point is arranged on the first antenna element 1; the metal mesh layer 3 is arranged on a second surface of the substrate 2, and the second surface and the first surface are opposite; the substrate 2 comprises a side wall, two ends of which are respectively connected with the first surface and the second surface; the second antenna unit 4 is disposed on the substrate 2, no overlapping area exists between the second antenna unit 4 and the first antenna unit 1 or between the second antenna unit 4 and the metal mesh layer 3, and a second feeding point is disposed on the second antenna unit 4.
In this embodiment, the antenna structure may be a transparent antenna structure, which may achieve the design of a transparent antenna. The antenna structure is mainly used for millimeter wave bands. The substrate 2 may be made of a transparent base material (e.g., PET material), the substrate 2 has a thickness H and a relative dielectric constant ∈ r, and the PET material has good light transmittance. The spacing of the metal mesh layers 3 is on the order of ten to hundred microns, with larger spacing providing better optical transmission but poorer electrical conductivity. The line width of the metal mesh layer 3 is preferably in the order of several micrometers, the metal mesh layer 3 acting as a ground for the antenna system. The antenna structure described above also presents a bottom clearance area 7, i.e. an area without the metallic mesh layer 3. And the range of ten microns to hundred microns includes 10 microns to 999 microns.
In this embodiment, the types of the first antenna unit 1 and the second antenna unit 4 may be the same or different. The first antenna element 1 may be an antenna patch element and the second antenna element may be a yagi antenna or a dipole antenna. The first antenna element 1 may be connected to a phased array radio transceiver circuit, which may include a feed path, a power amplifier, a low noise amplifier, a phase shifter and/or a power distribution network, to provide beam scanning functionality. The first feeding point of the first antenna element 1 may also be connected to the first feed 5 through a feeding microstrip line 8. The second feeding point of the second antenna element 4 may be connected to a second feed 6. The first feed 5 and the second feed 6 may be the same feed or may be different feeds, which is not limited in this embodiment.
So, owing to there are first antenna element 1 and second antenna element 4 to can expand the radiation coverage of antenna, and the dual polarization radiation in certain spatial dimension, so can and then promote wireless communication experience. The antenna structure is mounted with a flexible optically transparent substrate and can be used in a foldable or flexible communication terminal. The transparent antenna can be arranged on the screen, which is equivalent to opening up additional antenna space, thereby saving space. This antenna structure not only possesses the light permeability, still has good antenna radiation performance, therefore can use intelligent wearing equipment such as intelligent glasses, VR equipment, AR equipment, also can be used to above the glass or the display screen of mobile terminal equipment such as thing networking, intelligent house, car, cell-phone. The antenna has the characteristics of conformality and concealment, and can greatly expand the design space of the antenna, so that the user experience of the product is improved, and the competitiveness of the product is improved.
Optionally, the first antenna unit 1, the metal mesh layer 3, and the second antenna unit 4 are all made of a conductive transparent material.
In this embodiment, the first antenna element 1, the metal mesh layer 3, and the second antenna element 4 are preferably made of a conductive transparent material or a conductive material having a size that is not easily perceived by the naked eye, and may be made of other opaque conductive materials.
In this embodiment, the first antenna unit 1, the metal mesh layer 3, and the second antenna unit 4 are made of a conductive transparent material or a conductive material with a size that cannot be easily detected by naked eyes, and therefore, the antenna can be applied to intelligent wearing devices such as smart glasses, VR devices, AR devices, and the like, and can also be applied to glass or display screens of mobile terminal devices such as internet of things, smart homes, automobiles, mobile phones, and the like. The antenna has the characteristics of conformality and concealment, and can greatly expand the design space of the antenna, so that the user experience of the product is improved, and the competitiveness of the product is improved.
Optionally, the substrate 2 is a light-transmitting plate.
In this embodiment, the substrate 2 is a transparent plate, the transparent plate can be made of a transparent substrate (such as a PET material), the thickness of the transparent plate is H, the relative dielectric constant is ∈ r, and the PET material has good light transmittance, so that a design of a transparent antenna structure can be formed.
Optionally, the substrate 2 is a flexible substrate.
In this embodiment, the substrate 2 is a flexible substrate, so that the flexibility is improved and the durability is improved.
Optionally, the number of the first antenna units 1 is multiple, and the first antenna units are distributed in an array.
In this embodiment, for a better understanding of the above arrangement, reference may be made to fig. 1. As shown in fig. 1, the number of the first antenna units 1 is 4, and the first antenna units are distributed in an array. Of course, instead of the array of 4 first antenna elements 1, an array of some other number of first antenna elements 1 may be provided, and the number of first antenna elements 1 may be set according to actual needs, which is not limited in this embodiment.
Thus, the number of the first antenna units 1 is multiple and distributed in an array, and the radiation performance of the antenna structure can be improved.
Optionally, two sides of each first antenna element 1 are provided with one first feeding point, and each first antenna element is used for dual-polarization radiation.
In this embodiment, the two sides of each first antenna element 1 may be two adjacent sides of the first antenna element 1, thereby forming a dual-polarized feed. For a better understanding of the above arrangement, reference may also be made to fig. 1. As shown in fig. 1, taking the first antenna element 1 at the lower right as an example, the first antenna element 1 is located on the first surface of the substrate 2, and may be understood as being located on the top layer of the substrate 2. The feed microstrip line 8 is a feed line at the edge of the first antenna element 1, and another feed microstrip line (not labeled in fig. 1) is further provided at the right side of the antenna patch element 1, and the two feed structures form dual polarization. The first antenna element 1 is square and is a transparent conductive metal grid, the width W of which is preferably half the wavelength corresponding to the operating frequency.
In this embodiment, the four first antenna elements 1 are connected to a phased array radio transceiver circuit, which may include a feed power distribution network and phase shifters, to provide beam scanning functionality.
Optionally, the number of the second antenna units 4 is multiple, and the multiple second antenna units 4 are disposed in a target area;
wherein the target area includes at least one of a sidewall of the substrate 2, an area on the first face and the sidewall that is less than a target distance, and an area on the second face and the sidewall that is less than the target distance.
For a better understanding of the above arrangement, reference may still be made to fig. 1. As shown in fig. 1, the number of the second antenna elements 4 is 4. The second antenna element 4 on the right is adjacent to the sidewall on the right of the substrate 2, the second antenna element 4 on the left is adjacent to the sidewall on the left of the substrate 2, the second antenna element 4 on the top is adjacent to the sidewall on the top of the substrate 2, and the second antenna element 4 on the bottom is adjacent to the sidewall on the bottom of the substrate 2. Of course, the number of the second antenna units 4 may be other than 4, and the specific number may be determined according to actual requirements, which is not limited in this embodiment.
In this embodiment, the number of the second antenna units 4 is plural, and the plural second antenna units 4 are disposed in the target area, so that the antenna can radiate toward plural directions, thereby improving the radiation range of the antenna and further improving the radiation performance of the antenna.
Optionally, the second antenna unit 4 is a yagi antenna, and each yagi antenna includes an excitation unit 41 and at least one director 42;
the excitation unit 41 and the at least one director 42 are parallel, and the length of the excitation unit 41 is greater than that of the at least one director 42;
the second feeding point is provided at the excitation unit 41.
In this embodiment, each yagi antenna comprises a radiating element 41 and at least one director 42. For the same yagi antenna, the excitation unit 41 and the at least one director 42 of the yagi antenna may both be disposed on the first side of the substrate 2, or both be disposed on the second side of the substrate 2. Of course, it is also possible that the directors 42 of the yagi antenna are arranged on the side wall of the substrate 2, the excitation unit 41 is arranged on the first or second side of the substrate 2, and so on. The excitation unit 41 and the director 42 of different yagi antennas may be arranged in the same manner or in different manners, and this embodiment is not limited thereto.
In this embodiment, the excitation unit 41 and the at least one director 42 are parallel, which means that the excitation unit 41 and each director 42 of the at least one director 42 are parallel. The length of the excitation unit 41 is greater than the length of the at least one director 42, which means that the length of the excitation unit 41 is greater than the length of each director 42 of the at least one director 42. Since the length of the excitation unit 41 is greater than the length of the at least one director 42, the director 42 is facilitated to control the direction of the beam. The second feeding point is provided at the excitation unit 41, and may be provided at a midpoint of the excitation unit 41.
Thus, the second antenna element 4 is a yagi antenna, which has a good directivity and a relatively high gain, and has a good effect on long-distance communication. And due to the existence of at least one director 42, the signal radiated by the exciting unit 41 can be influenced, and the radiation performance of the antenna is improved. Of course, the number of the guides 42 may be set according to actual circumstances, and the present embodiment is not limited thereto.
Optionally, the excitation unit 41 of each yagi antenna is disposed on the first surface or the second surface, and the director 42 of each yagi antenna is disposed on the sidewall of the substrate 2.
For better understanding of the above arrangement, please refer to fig. 2 and fig. 3, and fig. 2 and fig. 3 are schematic structural diagrams of an antenna structure according to an embodiment of the present invention. As shown in fig. 2 and 3, the excitation unit 41 of each yagi antenna is disposed on the second surface, and the director 42 of each yagi antenna is disposed on the sidewall of the substrate 2.
In this embodiment, the excitation unit 41 of each yagi antenna is disposed on the second surface and is located in a clearance area (area without metal mesh) of the second surface. The director 42 of each yagi antenna is arranged at a side wall of the substrate 2. The beam of the yagi antenna is directed in the direction indicated by the arrow in fig. 12 due to the influence of the director 42. In this way, the energizing unit 41 and the director 42 can be arranged according to different requirements. And by controlling the position of the director 42 the beam pointing of the yagi antenna can be controlled to the desired pointing direction for the user.
Optionally, each yagi antenna is disposed on a side wall of the substrate 2, and distances between the excitation unit 41 and the director 42 in the yagi antenna and the first surface decrease in sequence;
the metal mesh layer 3 is disposed on the second surface of the substrate 2, and extends to wrap a portion of the sidewall of the substrate 2.
For better understanding of the above arrangement, please refer to fig. 4 and 5, and fig. 4 and 5 are schematic structural diagrams of an antenna structure according to an embodiment of the present invention. As shown in fig. 4 and 5, each yagi antenna is disposed on the side wall of the substrate 2, and the distances between the excitation unit 41 and the director 42 in the yagi antenna and the first surface decrease in sequence; the metal mesh layer 3 is disposed on the second surface of the substrate 2, and extends to wrap a portion of the sidewall of the substrate 2.
In this embodiment, the metal mesh layer 3 may completely cover the second surface of the substrate 2 and extend to wrap a portion of the sidewall of the substrate 2. The metal mesh layer 3 acts as a ground for the entire antenna structure and as a reflector for the sidewall yagi antenna. The exciter unit 41 of the yagi antenna is located on the side wall of the substrate 2, and the director 42 is located above the exciter unit 41. The beam of the sidewall yagi antenna is directed as indicated by the arrow in fig. 5 due to the cooperation of the metal mesh layer 3 and the director 42.
In this embodiment, the metal mesh layer 3 extends to wrap a portion of the side wall of the substrate 2, so that the metal mesh layer 3 wrapping the side wall can be used as a reflector of the yagi antenna, and thus, a reflector does not need to be additionally and separately arranged for the yagi antenna, and the cost of the antenna structure can be saved. And because the metal grid layer 3 extends and wraps part of the side wall of the substrate 2, the radiation capability of the antenna structure can be improved due to the existence of the metal grid layer as a reflector.
Optionally, each yagi antenna further comprises a reflector 43;
the reflector 43, the excitation unit 41 and the at least one director 42 are parallel to each other, and the length of the reflector 43 is greater than that of the excitation unit 41;
the second feeding point is provided at the excitation unit 41.
In this embodiment, the length of the reflector 43 is greater than the length of the excitation unit 41, so that the beam radiated by the excitation unit 41 can be reflected well. The second feeding point is disposed at the excitation unit 41, and may be a midpoint of the excitation unit 41.
Alternatively, each yagi antenna is disposed on a side wall of the substrate 2, and distances between the reflector 43, the excitation unit 41, and the at least one director 42 and the second surface of the yagi antenna are sequentially decreased or sequentially increased.
For better understanding of the above arrangement, please refer to fig. 6 to 9, and fig. 6 to 9 are schematic structural views of the antenna structure according to the embodiment of the present invention.
First, as shown in fig. 6 and 7, each yagi antenna is disposed on a side wall of the substrate 2, and distances between the reflector 43, the excitation unit 41, and at least one director 42 and the second surface of the yagi antenna are sequentially reduced. The main radiation pattern of the antenna is thus directed in the direction indicated by the arrow in fig. 7.
Referring to fig. 8 and 9, each yagi antenna is disposed on a sidewall of the substrate 2, and distances between the reflector 43, the excitation unit 41, and at least one director 42 of the yagi antenna and the second surface are sequentially increased. The main radiation pattern of the antenna is thus directed in the direction indicated by the arrow in fig. 9.
In this embodiment, each yagi antenna is disposed on the sidewall of the substrate 2, so that the radiation performance in the direction parallel to the sidewall of the substrate 2 can be better.
Alternatively, each yagi antenna is disposed on the first surface, and distances between the reflector 43, the excitation unit 41, and the at least one director 42 of the yagi antenna and the sidewall of the substrate 2 decrease in sequence.
For better understanding of the above arrangement, please refer to fig. 10 and 11, and fig. 10 and 11 are schematic structural diagrams of an antenna structure according to an embodiment of the present invention. As shown in fig. 10, a yagi antenna is provided above, below, on the left side, and on the right side, and the reflector 43, the excitation unit 41, and the at least one director 42 are parallel to each other. The distance between the reflector 43, the excitation element 41 and the at least one director 42 in the yagi antenna decreases in turn from the side wall of the substrate 2.
Referring to fig. 11 again, fig. 11 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention. As shown in FIG. 11, the substrate 2 has a thickness H and a relative dielectric constant ε r. The yagi antenna comprises a reflector 43, a exciter unit 41 and at least one director 42.
In this embodiment, the reflector 43, the excitation unit 41 and the at least one director 42 may all be optically transparent metal grids. The length of the reflector 43 is longer than that of the excitation unit 41, so that the signal radiated from the excitation unit 41 can be reflected well. The at least one director 42 has a length shorter than the length of the excitation unit 41 so that the signal radiated by the excitation unit 41 can be well directed. Also, the length of the at least one director 42 may preferably be between 20% and 30% shorter than the length of the excitation unit 41. In this way, due to the cooperation of the reflector 43, the excitation unit 41 and the at least one director 42, the main beam can be directed in a desired direction, as indicated by the arrows in fig. 10.
Like this, antenna structure not only possesses the light permeability, still has good antenna radiation performance, therefore can use intelligent wearing equipment such as intelligent glasses, VR equipment, AR equipment, also can be used to above the glass or the display screen of mobile terminal equipment such as thing networking, intelligent house, car, cell-phone. The antenna has the characteristics of conformality and concealment, and can greatly expand the design space of the antenna, so that the user experience of the product is improved, and the competitiveness of the product is improved.
Optionally, a line connecting the excitation unit 41 and the midpoint of the length of the at least one director 42 in the at least one yagi antenna does not pass through the center point of the first face.
For better understanding of the above arrangement, please refer to fig. 12, and fig. 12 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention. As shown in fig. 12, the excitation unit 41 and the at least one director 42 in the upper yagi antenna both move to the right, and the line connecting the length midpoints of the excitation unit 41 and the at least one director 42 in the yagi antenna does not pass through the center point of the first surface. And the exciting element 41 and the at least one director 42 in the yagi antenna on the left side both move downwards, and the connecting line of the exciting element 41 and the midpoint of the length of the at least one director 42 in the yagi antenna does not pass through the center point of the first surface. The main radiation pattern of the antenna is directed in the direction indicated by the arrow in fig. 12.
In this way, the connection line between the length midpoints of the excitation unit 41 and the at least one director 42 in the at least one yagi antenna does not pass through the center point of the first surface, which means that the excitation unit 41 and the at least one director 42 in the at least one yagi antenna are shifted to the same direction, so that more radiation directions of the antenna can be satisfied, and the antenna can adapt to more different radiation environments.
Optionally, a preset distance is arranged between the edge of the metal mesh layer 3 and the edge thereof.
In this embodiment, a preset distance is set between the edge of the metal mesh layer 3 and the edge thereof, and the area between the edge of the metal mesh layer 3 and the edge thereof may be referred to as a clearance area.
Optionally, the second antenna unit 4 is a dipole antenna, each dipole antenna is disposed on the sidewall of the substrate 2, and each dipole antenna is provided with one second feeding point.
For better understanding of the above arrangement, please refer to fig. 13 and 14, and fig. 13 and 14 are schematic structural diagrams of an antenna structure according to an embodiment of the present invention. As shown in fig. 13 and 14, the second antenna unit 4 is a dipole antenna, each dipole antenna is disposed on a sidewall of the substrate 2, each dipole antenna is provided with a second feeding point, and the second feeding point may be disposed at a midpoint of the dipole antenna.
Optionally, the width of the first antenna element 1 is an equivalent half wavelength of an operating frequency of the first antenna element 1 on the substrate 2.
In this embodiment, the width of the first antenna element 1 is the equivalent half wavelength of the operating frequency of the first antenna element 1 on the substrate 2.
Optionally, the distance between two adjacent grids in the metal grid layer 3 is on the order of ten micrometers to hundred micrometers.
In this embodiment, the distance between two adjacent grids in the metal grid layer 3 may be preferably in the order of ten micrometers to hundred micrometers. The range of ten microns to hundred microns includes 10 microns to 999 microns.
An antenna structure of the present embodiment includes a first antenna unit 1, a substrate 2, a metal mesh layer 3, and a second antenna unit 4; the first antenna element 1 is arranged on the first surface of the substrate 2, and the first feeding point is arranged on the first antenna element 1; the metal mesh layer 3 is arranged on a second surface of the substrate 2, and the second surface and the first surface are opposite; the substrate 2 comprises a side wall, two ends of which are respectively connected with the first surface and the second surface; the second antenna unit 4 is disposed on the substrate 2, no overlapping area exists between the second antenna unit 4 and the first antenna unit 1 or between the second antenna unit 4 and the metal mesh layer 3, and a second feeding point is disposed on the second antenna unit 4.
So, can reach transparent antenna's design, and owing to there are first antenna element 1 and second antenna element 4 to can expand the radiation coverage of antenna, and the dual polarization radiation in certain spatial dimension, so can and then promote wireless communication experience. The antenna structure is equivalent to a multi-antenna system and can be used for a phased antenna array for processing millimeter wave communication. The antenna structure carries a flexible light transparent substrate and can be used in a foldable or flexible communication terminal. The transparent antenna can be arranged on the screen, which is equivalent to opening up additional antenna space, thereby saving space. This antenna structure not only possesses the light permeability, still has good antenna radiation performance, therefore can use intelligent wearing equipment such as intelligent glasses, VR equipment, AR equipment, also can be used to above the glass or the display screen of mobile terminal equipment such as thing networking, intelligent house, car, cell-phone. The antenna has the characteristics of conformality and concealment, and can greatly expand the design space of the antenna, so that the user experience of the product is improved, and the competitiveness of the product is improved.
The embodiment of the invention also provides a screen which comprises the antenna structure.
The embodiment of the invention also provides a communication terminal which comprises the antenna structure.
In this embodiment, the communication terminal may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or the like.
Optionally, the antenna structure is disposed on a screen of the communication terminal.
In this embodiment, the antenna structure is disposed on the screen of the communication terminal, and the transparent antenna can be disposed on the screen, which is equivalent to opening up another antenna space, thereby saving space.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (17)
1. An antenna structure, comprising: the antenna comprises a first antenna unit, a substrate, a metal grid layer and a second antenna unit;
the first antenna unit is arranged on the first surface of the substrate, and the first feeding point is arranged on the first antenna unit;
the metal grid layer is arranged on a second surface of the substrate, and the second surface and the first surface are opposite;
the substrate comprises a side wall, two ends of the side wall are respectively connected with the first surface and the second surface;
the second antenna unit is arranged on the substrate, no overlapping area exists between the second antenna unit and the first antenna unit, and no overlapping area exists between the second antenna unit and the metal grid layer, and a second feeding point is arranged on the second antenna unit;
the second antenna unit is arranged in a target area, and the target area comprises a side wall of the substrate;
the metal grid layer extends and wraps a part of the side wall of the substrate.
2. The antenna structure of claim 1, wherein the first antenna element, the metal mesh layer, and the second antenna element are all conductive and light-transmissive materials.
3. The antenna structure of claim 1, wherein the substrate is a light transmissive plate.
4. The antenna structure of claim 1, wherein the substrate is a flexible substrate.
5. The antenna structure according to claim 1, wherein the number of the first antenna elements is plural and distributed in an array.
6. An antenna structure according to claim 5, characterized in that both sides of each first antenna element are provided with a said first feeding point, each first antenna element being intended for dual polarized radiation.
7. The antenna structure according to claim 5, characterized in that the number of the second antenna elements is plural;
wherein the target area further comprises an area on the first face that is less than a target distance from the sidewall.
8. The antenna structure according to claim 7, characterized in that the second antenna elements are yagi antennas, each yagi antenna comprising an exciter element and at least one director;
the excitation unit and the at least one director are parallel, and the length of the excitation unit is greater than that of the at least one director;
the second feeding point is arranged on the exciting unit.
9. The antenna structure according to claim 8, characterized in that the exciter element of each yagi antenna is arranged at the first side and the director of each yagi antenna is arranged at the side wall of the substrate.
10. The antenna structure according to claim 8, characterized in that each yagi antenna is arranged on a side wall of the substrate, and the distance between the exciter element and the director in the yagi antenna and the first surface decreases in turn.
11. The antenna structure of claim 8, wherein each yagi antenna further comprises a reflector;
the reflector, the excitation unit and the at least one director are parallel to each other in pairs, and the length of the reflector is greater than that of the excitation unit;
the second feeding point is arranged on the exciting unit.
12. The antenna structure according to claim 7, characterized in that the second antenna elements are dipole antennas, each dipole antenna being arranged at a side wall of the substrate, each dipole antenna being provided with one of the second feeding points.
13. The antenna structure of claim 1, wherein the width of the first antenna element is an equivalent half-wavelength of an operating frequency of the first antenna element on the substrate.
14. The antenna structure according to claim 1, characterized in that the spacing between two adjacent meshes in the metallic mesh layer is of the order of ten to hundred microns.
15. A screen characterised by comprising an antenna structure according to any one of claims 1 to 14.
16. A communication terminal, characterized in that it comprises an antenna structure according to any one of claims 1 to 14.
17. The communication terminal according to claim 16, wherein the antenna structure is provided on a screen of the communication terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910261492.2A CN109904592B (en) | 2019-04-02 | 2019-04-02 | Antenna structure and communication terminal |
| PCT/CN2020/080005 WO2020199927A1 (en) | 2019-04-02 | 2020-03-18 | Antenna structure and communication terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910261492.2A CN109904592B (en) | 2019-04-02 | 2019-04-02 | Antenna structure and communication terminal |
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| CN109904592A CN109904592A (en) | 2019-06-18 |
| CN109904592B true CN109904592B (en) | 2021-07-20 |
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| CN201910261492.2A Active CN109904592B (en) | 2019-04-02 | 2019-04-02 | Antenna structure and communication terminal |
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| WO (1) | WO2020199927A1 (en) |
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| CN109904592B (en) * | 2019-04-02 | 2021-07-20 | 维沃移动通信有限公司 | Antenna structure and communication terminal |
| CN112186354A (en) * | 2019-07-03 | 2021-01-05 | 华为技术有限公司 | Antenna and terminal equipment |
| CN112018511A (en) * | 2020-08-13 | 2020-12-01 | 安徽精卓光显技术有限责任公司 | Car networking antenna and wireless communication device |
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| CN107171075A (en) * | 2016-03-07 | 2017-09-15 | 华为技术有限公司 | Multi-frequency array antenna and communication system |
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| US8674878B2 (en) * | 2010-09-15 | 2014-03-18 | Ralink Technology Corp. | Smart antenna system |
| US8760352B2 (en) * | 2012-03-30 | 2014-06-24 | Htc Corporation | Mobile device and antenna array thereof |
| WO2015133842A1 (en) * | 2014-03-05 | 2015-09-11 | Samsung Electronics Co., Ltd. | Antenna device and electronic device having the antenna device |
| CN104134861A (en) * | 2014-07-23 | 2014-11-05 | 深圳市视晶无线技术有限公司 | Multi-input multi-output antenna system, approximately-omnidirectional antenna device and high-gain miniature antenna thereof |
| CN104112906A (en) * | 2014-07-23 | 2014-10-22 | 深圳市视晶无线技术有限公司 | MIMO (multiple input multiple output) antenna system and device |
| CN107430467B (en) * | 2015-03-27 | 2020-10-16 | 富士胶片株式会社 | Touch sensor and touch panel |
| CN106935952B (en) * | 2015-12-30 | 2020-02-21 | 华为技术有限公司 | Dual-polarized antenna and communication device |
| KR102334098B1 (en) * | 2016-04-20 | 2021-12-03 | 삼성전자주식회사 | Electronic device including display |
| CN205790338U (en) * | 2016-05-20 | 2016-12-07 | 黄桂贤 | Anneta module device |
| CN108539386B (en) * | 2017-03-01 | 2020-02-21 | 华为技术有限公司 | Antenna structure and wireless terminal |
| CN108417996B (en) * | 2018-01-25 | 2021-06-15 | 瑞声科技（南京）有限公司 | Antenna assembly and mobile terminal |
| CN109904592B (en) * | 2019-04-02 | 2021-07-20 | 维沃移动通信有限公司 | Antenna structure and communication terminal |
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2019
- 2019-04-02 CN CN201910261492.2A patent/CN109904592B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103518290A (en) * | 2011-05-11 | 2014-01-15 | 哈里公司 | Electronic device including patch antenna and photovoltaic layer and related methods |
| CN107171075A (en) * | 2016-03-07 | 2017-09-15 | 华为技术有限公司 | Multi-frequency array antenna and communication system |
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| CN109904592A (en) | 2019-06-18 |
| WO2020199927A1 (en) | 2020-10-08 |
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