CN110867649B - Antenna module and terminal - Google Patents
Antenna module and terminal Download PDFInfo
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- CN110867649B CN110867649B CN201911207506.9A CN201911207506A CN110867649B CN 110867649 B CN110867649 B CN 110867649B CN 201911207506 A CN201911207506 A CN 201911207506A CN 110867649 B CN110867649 B CN 110867649B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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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
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
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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
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
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Abstract
The application discloses antenna module and terminal belongs to antenna technical field. The antenna module includes: the antenna comprises a first antenna, a coupling enhancement structure, a first substrate and a second substrate; the first surface of the first substrate is opposite to the second surface of the second substrate, the first antenna is arranged on the first surface of the first substrate, and the coupling enhancement structure is arranged on the second surface of the second substrate; the coupling enhancement structure comprises a radiation gap, and the radiation gap corresponds to the position of a current strong point on a radiator of the first antenna; the current intensity point is the position of the maximum current on a radiator of the first antenna when the first antenna works in the first working mode; the length extension direction of the radiation slot is perpendicular to the current direction on the radiator of the first antenna. The coupling reinforcing structure changes the current strong point on the first antenna through self coupling, thereby changing the resonant frequency, widening the radiation bandwidth of the antenna and improving the radiation efficiency of the antenna.
Description
Technical Field
The application relates to the technical field of antennas, in particular to an antenna module and a terminal.
Background
With the rapid development of the antenna technology field, various antennas have been applied in terminals, wherein the quality of the antenna transmission signal is often one of the concerns of users.
In the terminal, due to the requirements of various applications, hardware devices in the terminal are more and more, and the hardware devices occupy more and more internal space of the terminal, so that there is a limitation on the arrangement of the terminal antenna. For example, the terminal needs to use a full-screen, a curved-screen, a surround-screen, or other display screens, or the terminal needs to support various types of cameras for shooting, or the terminal needs to have a larger battery capacity, or the like. In addition, as communication technology develops, signal transmission also gradually develops to 5G and more advanced technology, and more antennas are required to be arranged in the terminal.
Because the internal space of the terminal is narrower and narrower, the setting space reserved for the antenna is also less and less, and the problems of low working efficiency, narrow working bandwidth and the like of the antenna are caused.
Disclosure of Invention
The embodiment of the application provides an antenna module and a terminal, which can widen the radiation bandwidth of an antenna and improve the radiation efficiency of the antenna. The technical scheme is as follows:
in one aspect, an embodiment of the present application provides an antenna module, where the antenna module includes: the antenna comprises a first antenna, a coupling enhancement structure, a first substrate and a second substrate;
the first surface of the first substrate is opposite to the second surface of the second substrate, the first antenna is arranged on the first surface of the first substrate, and the coupling enhancement structure is arranged on the second surface of the second substrate;
the coupling enhancement structure comprises a radiation gap, and the radiation gap corresponds to the position of a current strong point on a radiator of the first antenna; the current strong point is the position of the maximum current on a radiator of the first antenna when the first antenna works in a first working mode;
the length extension direction of the radiation slot is perpendicular to the current direction on the radiator of the first antenna.
In another aspect, an embodiment of the present application provides a terminal, where the terminal includes at least one antenna module according to the above aspect.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
the application provides an antenna module includes: the antenna comprises a first antenna, a coupling enhancement structure, a first substrate and a second substrate; the first surface of the first substrate is opposite to the second surface of the second substrate, the first antenna is arranged on the first surface of the first substrate, and the coupling enhancement structure is arranged on the second surface of the second substrate; the coupling enhancement structure comprises a radiation gap, and the radiation gap corresponds to the position of a current strong point on a radiator of the first antenna; the current strong point is the position of the maximum current on the radiator of the first antenna when the first antenna works in the first working mode; the length extension direction of the radiation slot is perpendicular to the current direction on the radiator of the first antenna. This application is through the coupling reinforcing structure in the antenna module on design length extending direction and the radiating body of first antenna on the current direction vertically radiation gap, and this radiation gap corresponds with the current strong point position on the radiating body of first antenna, the coupling reinforcing structure can be at first antenna during operation, through the current strong point on self coupling change first antenna to change resonant frequency, widened the radiation bandwidth of antenna, improved the radiation efficiency of antenna.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of an application scenario of a terminal for transmitting data according to an exemplary embodiment of the present application;
fig. 2 is a schematic structural diagram of an antenna module according to an exemplary embodiment of the present application;
FIG. 3 is a schematic diagram of a coupling enhancement structure of FIG. 2 according to an exemplary embodiment of the present application;
FIG. 4 is a schematic diagram of a current flow of a first antenna of FIG. 2 according to an exemplary embodiment of the present application;
fig. 5 is a top view of a first antenna according to an embodiment of the present application and referring to fig. 4;
fig. 6 is a schematic structural diagram of an antenna module according to an exemplary embodiment of the present application;
fig. 7 is a schematic current diagram of a planar inverted-F antenna according to an exemplary embodiment of the present application in relation to fig. 6;
FIG. 8 is a schematic diagram of a first antenna and coupling enhancement structure of FIG. 6 according to an exemplary embodiment of the present application;
FIG. 9 is a schematic current diagram of a first antenna of the type referred to in an exemplary embodiment of the present application in relation to FIG. 8;
FIG. 10 is a schematic diagram of a first antenna and coupling enhancement structure of FIG. 6 according to an exemplary embodiment of the present application;
FIG. 11 is a schematic diagram of another first antenna and coupling enhancement structure according to an exemplary embodiment of the present application in relation to FIG. 6;
fig. 12 is a schematic structural diagram of a terminal according to an exemplary embodiment of the present application;
fig. 13 is a schematic structural diagram of a mobile phone according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The scheme provided by the application can be used in a terminal used in daily life, and in a real scene of multi-band application when an antenna in the terminal is designed, for convenience of understanding, some terms and application scenes related to the embodiment of the application are first briefly introduced below.
MIMO (Multiple-Input Multiple-Output) technology: the method is a technology for performing space diversity by using a plurality of transmitting antennas and receiving antennas at a transmitting end and a receiving end respectively, adopts a discrete multi-antenna, and can decompose a communication link into a plurality of parallel sub-channels, thereby improving the capacity of transmitting or receiving signals.
In daily life, people can use the terminal to work, study, entertain and the like. The user may transmit various data through an antenna in the terminal, for example, the user may send information such as a picture and a video taken by the user to another terminal, or the user may perform a voice call, a video call, and the like with another user through the terminal to transmit voice data or video data.
Please refer to fig. 1, which shows a schematic view of an application scenario of a terminal transmitting data according to an exemplary embodiment of the present application. As shown in fig. 1, a number of terminals 110 are included.
Alternatively, the terminal 110 is a terminal to which an antenna designed to transmit signals can be installed. For example, the terminal may be a mobile phone, a tablet computer, an e-book reader, smart glasses, a smart watch, an MP3 player (Moving Picture Experts Group Audio Layer III, motion Picture Experts compression standard Audio Layer 3), an MP4 player (Moving Picture Experts Group Audio Layer IV, motion Picture Experts compression standard Audio Layer 4), a notebook computer, a laptop computer, a desktop computer, and the like.
In the environment shown in fig. 1, the antenna in the terminal can operate in various data transmission scenarios, and in order to adapt to data transmission in various frequency bands, various antennas are also designed in the terminal. For example, a Wi-Fi (Wireless Fidelity )2.4GHz +5GHz antenna, a GPS (Global Positioning System) antenna, and the like. The terminal may also be provided with MIMO antennas with which to transmit data. Optionally, an antenna in the terminal may operate in a Sub-6GHz frequency band, which may also be referred to as a Sub-6GHz antenna.
At present, various hardware devices are installed in a terminal, and with the increase of a Sub-6GHz NR (New Radio) frequency band, the number of antennas installed in the terminal is increased, and a space reserved for the antennas in the terminal is decreased, which causes problems of low working efficiency of the antennas, narrow working bandwidth, and the like.
In order to widen the radiation bandwidth of the antenna, the radiation efficiency of the antenna is improved. The application provides a solution, can realize reducing the resonant frequency of antenna in terminal inside, improves the radiation efficiency of antenna. Please refer to fig. 2, which illustrates a schematic structural diagram of an antenna module according to an exemplary embodiment of the present application. The antenna module provided by the embodiment of the present application can be applied to the terminal in the application scenario shown in fig. 1. As shown in fig. 2, the antenna module includes: a first antenna 201, a coupling enhancement structure 202, a first substrate 203 and a second substrate 204;
wherein the first substrate 203 comprises a first surface 205, the second substrate 204 comprises a second surface 206, the first surface 205 of the first substrate is opposite to the second surface 206 of the second substrate, the first antenna 201 is disposed on the first surface 205 of the first substrate, and the coupling enhancement structure 202 is disposed on the second surface 206 of the second substrate.
The coupling enhancement structure 202 includes a radiation gap corresponding to a current strong point on a radiator of the first antenna 201; the current intensity point is a position where a current is maximum on a radiator of the first antenna when the first antenna operates in the first operating mode.
Referring to fig. 3, a schematic diagram of a coupling enhancement structure of fig. 2 according to an exemplary embodiment of the present application is shown. Fig. 3 is a plan view as viewed from above in the direction of the arrows in fig. 2. As shown in fig. 3, a radiation slot 302 is included on the coupling enhancement structure 301. When the coupling enhancement structure 301 is disposed on the second substrate, the center of the radiation slot may be aligned with the position of the current intensity point on the radiator of the first antenna, so that the radiation slot corresponds to the position of the current intensity point on the radiator of the first antenna.
For example, refer to fig. 4, which shows a schematic current diagram of a first antenna according to an exemplary embodiment of the present application related to fig. 2. As shown in fig. 4, the antenna includes a first antenna 401, a current value curve 402, a current intensity point 403, and a first substrate 404. In the first antenna 401, the current excited in a certain operation mode is shown by the dotted arrows in fig. 4, the magnitude of the current value of each portion can be shown by the current value curve 402, and the radiation gap on the coupling enhancement structure can be arranged right above the current intensity point 402.
The length extending direction of the radiation slot is perpendicular to the current direction on the radiator of the first antenna. For example, in the coupling enhancement structure shown in fig. 3, when the longitudinal extension direction of the radiation slot is as shown by an arrow, and the coupling enhancement structure is disposed on the second substrate, it is necessary to ensure that the longitudinal extension direction of the radiation slot is perpendicular to the current direction of the first antenna on the first substrate. Alternatively, the direction of the current in the antenna may indicate the polarization direction of the antenna, which may also be described herein as the direction in which the length of the radiating slot extends is perpendicular to the polarization direction of the first antenna on the first substrate.
Optionally, when the current direction of the first antenna on the second substrate is the direction shown in fig. 4, when the first antenna operates in the operating mode, the radiation slot on the coupling enhancement structure may change the current intensity point, so as to reduce the resonant frequency of the first antenna when the first antenna operates in the operating mode.
Referring to fig. 5, a top view of a first antenna related to fig. 4 according to an embodiment of the present application is shown. Fig. 5 is a plan view also seen from above in the direction of the arrows in fig. 2. As shown in fig. 5(a), a first antenna 501 is included, and the current excited by the first antenna 501 in a certain operation mode is shown by a dotted arrow in fig. 5 (a); as shown in fig. 5(b), the first antenna 501 is included, and the current excited by the first antenna 501 in a certain operation mode is shown by the dotted arrow in fig. 5 (b). Fig. 5(a) is a schematic diagram of a current in the first antenna when a radiation slot perpendicular to the current direction is not provided at a current strong portion of the first antenna, and fig. 5(b) is a schematic diagram of a current in the first antenna when a radiation slot perpendicular to the current direction is provided at a current strong portion of the first antenna. As shown in fig. 5, the coupling enhancement structure can change the current path on the first antenna, prolong the current path at the radiating slot, and lower the resonant frequency of the first antenna when operating in the operating mode, thereby improving the radiation efficiency of the first antenna.
To sum up, the antenna module that this application provided includes: the antenna comprises a first antenna, a coupling enhancement structure, a first substrate and a second substrate; the first surface of the first substrate is opposite to the second surface of the second substrate, the first antenna is arranged on the first surface of the first substrate, and the coupling enhancement structure is arranged on the second surface of the second substrate; the coupling enhancement structure comprises a radiation gap, and the radiation gap corresponds to the position of a current strong point on a radiator of the first antenna; the current strong point is the position of the maximum current on the radiator of the first antenna when the first antenna works in the first working mode; the length extension direction of the radiation slot is perpendicular to the current direction on the radiator of the first antenna. This application is through the radiating gap of the coupling reinforcing structure in the antenna module on design length extending direction and the irradiator of first antenna on the direction of current vertically, and this radiating gap corresponds with the current strong point position on the irradiator of first antenna, and the coupling reinforcing structure can be at first antenna during operation, and the current strong point on the first antenna is changed through self coupling to change resonant frequency, widened the radiation bandwidth of antenna, improved the radiating efficiency of antenna.
In one possible implementation, the first antenna may operate in a resonant mode of N times 1/2 wavelengths, where N is an integer greater than or equal to 1. That is, the operation mode in which the first antenna operates may be a resonance mode of 1/2 wavelengths, a resonance mode of 1 wavelength, a resonance mode of 2 wavelengths, or the like. The above-described arrangement of fig. 2 will now be described, taking as an example the resonant mode in which the first antenna operates in a different integer multiple of 1/2 wavelengths.
Please refer to fig. 6, which illustrates a schematic structural diagram of an antenna module according to an exemplary embodiment of the present application. The antenna module provided by the embodiment of the present application can be applied to the terminal in the application scenario shown in fig. 1. As shown in fig. 6, the antenna module includes: a first antenna 601, a coupling enhancement structure 602, a first substrate 603 and a second substrate 604;
the first substrate 603 includes a first surface 605, the second substrate 604 includes a second surface 606, the first surface 605 of the first substrate is opposite to the second surface 606 of the second substrate, the first antenna 601 is disposed on the first surface 605 of the first substrate, and the coupling enhancement structure 602 is disposed on the second surface 606 of the second substrate.
The coupling enhancement structure 602 includes a first radiation slot, where the first radiation slot corresponds to a position of a first current strong point on a radiator of the first antenna 601, and the first current strong point is a position where a current on the radiator of the first antenna is maximum when the first antenna 601 operates in a resonant mode at 1/2 wavelengths. Optionally, the coupling enhancement structure 602 may include the first radiation slot in a manner similar to that shown in fig. 3, and the description thereof is omitted here.
Optionally, the distance between the radiation slot on the coupling enhancement structure and the first antenna needs to be greater than or equal to 0.2 mm. That is, the distance between the first radiation slot and the first antenna included in the coupling enhancement structure 602 needs to be greater than or equal to 0.2 mm.
Optionally, the first antenna 601 may be any one of a planar inverted F antenna, an inverted F antenna, or a patch antenna. Taking the first antenna 601 as an example of a planar inverted F antenna, please refer to fig. 7, which shows a schematic current diagram of a planar inverted F antenna related to fig. 6 according to an exemplary embodiment of the present application. As shown in fig. 7, the antenna includes a first antenna 701, a current value curve 702, a current intensity point 703, and a first substrate 704. When the first antenna 701 operates in the resonant mode at 1/2 wavelengths, the direction of current flow on the first antenna 701 may be as indicated by the direction of the dashed arrow in fig. 7. The magnitude of the current value of each portion can be shown as a current value curve 702, and when the coupling enhancement structure is disposed on the second substrate, the radiation gap on the coupling enhancement structure can be disposed directly above the current intensity point 702. In addition, it is necessary to ensure that the length extending direction of the first radiation slot is perpendicular to the current direction of the first antenna on the first substrate. Optionally, if the first antenna is an inverted F antenna or a patch antenna, the arrangement of the coupling enhancement structure may also refer to the above description, and details are not described here again.
When the first antenna operates in the resonant mode at 1/2 wavelengths, the first radiation slot on the coupling enhancement structure can change the current intensity point on the first antenna in the resonant mode at 1/2 wavelengths, lowering the resonant frequency of the first antenna when operating in the resonant mode at 1/2 wavelengths.
Optionally, the material of the coupling enhancement structure 602 may be made of copper foil, silver paste, or the like, and the shape of the coupling enhancement structure may be changed according to the requirement of practical application, which is not limited in the embodiment of the present application.
Optionally, the first antenna in the antenna module shown above may operate in an FR2(Frequency Range 2) Frequency band in the 5G Frequency band. Among these, the FR2 band is also referred to as the sub-6GHz band. That is, the first antenna may transmit radio frequency signals in the Sub-6GHz band.
In a possible implementation manner, the radiation slots included in the coupling enhancement structure may be replaced by a first radiation slot group, that is, the coupling enhancement structure includes a first radiation slot group, the first radiation slot group includes two radiation slots, the two radiation slots are arranged along a current direction on a radiator of the first antenna, the two radiation slots respectively correspond to positions of second current strong points on the radiator of the first antenna, and the second current strong points are positions where currents are maximum on the radiator of the first antenna when the first antenna operates in a resonant mode with 1 wavelength.
Referring to fig. 8, a schematic structural diagram of a first antenna and a coupling enhancement structure related to fig. 6 according to an exemplary embodiment of the present application is shown. As shown in fig. 8, a first antenna 801, a coupling enhancement structure 802 is included. A first radiation gap group 803 is included in the coupling enhancement structure 802, and the first radiation gap group 803 includes two radiation gaps, namely a first radiation gap 804 and a second radiation gap 805. The second current intensity point 806 is included in the first antenna 801, and since the second current intensity point includes two current intensity points when the first antenna 801 operates in the 1-wavelength resonant mode, the second current intensity point 806 includes two current intensity points.
The first radiation slot 804 and the second radiation slot 805 are arranged along the current direction on the radiator of the first antenna, and the first radiation slot 804 and the second radiation slot 805 respectively correspond to the position of a second current strong point on the radiator of the first antenna. That is, the first radiation slot 804 corresponds to a position of a second current strong point on the radiator of the first antenna, and the second radiation slot 805 corresponds to a position of another second current strong point on the radiator of the first antenna.
It should be noted that the first antenna 801 is also illustrated as a planar inverted F antenna, please refer to fig. 9, which shows a schematic current diagram of a first antenna related to fig. 8 according to an exemplary embodiment of the present application. As shown in fig. 9, a first antenna 901, a current value curve 902 and a current intensity point 903 are included. In the first antenna 901, the current excited in the 1-wavelength resonant mode is shown by the dotted arrows in fig. 9, the magnitude of the current value of each portion may be shown by a current value curve 902, and the radiation slot on the coupling enhancement structure may be disposed directly above the current intensity point 902. Optionally, if the first antenna is an inverted F antenna or a patch antenna, the arrangement of the coupling enhancement structure may also refer to the above description, and details are not described here again.
When the first antenna operates in the 1-wavelength resonant mode, the first radiation slot group on the coupling enhancement structure can change the current intensity point on the first antenna in the 1-wavelength resonant mode, and reduce the resonant frequency of the first antenna when the first antenna operates in the 1-wavelength resonant mode.
In a possible implementation manner, the radiation slots included in the coupling enhancement structure may be replaced by a second radiation slot group, that is, the coupling enhancement structure includes the second radiation slot group; the second radiation slot group comprises three radiation slots which are arranged at equal intervals along the current direction on the radiator of the first antenna; the second radiation slot corresponds to a third current strong point on the radiator of the first antenna, the third current strong point is a position where the current on the radiator of the first antenna is the maximum when the first antenna operates in the resonant mode with the 1/2 wavelengths, and the second radiation slot is a radiation slot in the middle of the second radiation slot group; the third radiation slot and the fourth radiation slot correspond to a fourth current strong point on the radiator of the first antenna respectively, the fourth current strong point is the position where the current on the radiator of the first antenna is the maximum when the first antenna works in the resonant mode with 1 wavelength, and the third radiation slot and the fourth radiation slot are radiation slots except the second radiation slot in the second radiation slot group respectively.
Referring to fig. 10, a schematic diagram of a first antenna and a coupling enhancement structure of fig. 6 according to an exemplary embodiment of the present application is shown. As shown in fig. 10, a first antenna 1001, a coupling enhancement structure 1002 are included. The coupling enhancement structure 1002 includes a second radiation slot group 1003, and the second radiation slot group 1003 includes three radiation slots, i.e., a second radiation slot 1004, a third radiation slot 1005 and a fourth radiation slot 1006. The third current intensity point 1007 and the fourth current intensity point 1008 are included in the first antenna 1001, and the fourth current intensity point 1008 includes two current intensity points because the fourth current intensity point includes two current intensity points when the first antenna 1001 operates in the 1-wavelength resonance mode.
The second radiation slot 1004, the third radiation slot 1005 and the fourth radiation slot 1006 are arranged equidistantly along the current direction on the radiator of the first antenna, and the second radiation slot 1004 corresponds to the position of the third current strong point on the radiator of the first antenna.
The third radiation slot 1005 and the fourth radiation slot 1006 correspond to a fourth current strong point on the radiator of the first antenna, respectively. That is, the third radiation slot 1005 corresponds to a position of one fourth current strong point on the radiator of the first antenna, and the fourth radiation slot 1006 corresponds to a position of another fourth current strong point on the radiator of the first antenna. It should be noted that the first antenna 1001 is also exemplified by a planar inverted F antenna, the schematic current diagram of the first antenna 1001 in the resonant mode with the wavelength of 1/2 can refer to fig. 7, and the schematic current diagram of the first antenna 1001 in the resonant mode with the wavelength of 1 can refer to fig. 9, which is not described herein again.
When the first antenna operates in the resonant mode at 1/2 wavelengths, the second radiation slot in the coupling enhancement structure may change the third current intensity point on the first antenna at the resonant mode at 1/2 wavelengths, lowering the resonant frequency of the first antenna when operating in the resonant mode at 1/2 wavelengths. When the first antenna operates in the 1-wavelength resonant mode, the third radiation slot and the fourth radiation slot on the coupling enhancement structure can change a fourth current intensity point on the first antenna in the 1-wavelength resonant mode, so that the resonant frequency of the first antenna in the 1-wavelength resonant mode is reduced. That is, fig. 10 can be regarded as a combination of fig. 6 and 8.
Optionally, the first antenna may also operate in a resonant mode with other integral multiples of 1/2 wavelengths, and the radiation slot on the coupling structure may also be set corresponding to the current intensity point in each operating mode, which is not illustrated here.
In one possible implementation, the shape of the coupling enhancement structure may be irregular, for example, please refer to fig. 11, which shows a schematic structural diagram of another first antenna and coupling enhancement structure related to fig. 6 according to an exemplary embodiment of the present application. As shown in fig. 11, an edge branch 1101 and an edge slit 1102 are included.
Optionally, the radiation gaps on the coupling enhancement structure are also illustrated as rectangular radiation gaps, and in practical application, the radiation gaps may also be changed into an ellipse, a circle, a square, a regular polygon, or the like. When the radiation slit is an ellipse, the length extending direction of the radiation slit may be the long axis direction of the radiation slit, when the radiation slit is a circle, the length extending direction of the radiation slit may be the diameter direction of the radiation slit, and when the radiation slit is a regular polygon, the length extending direction of the radiation slit may be the perpendicular bisector direction of any one side length of the radiation slit. This is not limited by the examples of the present application.
To sum up, the antenna module that this application provided includes: the antenna comprises a first antenna, a coupling enhancement structure, a first substrate and a second substrate; the first surface of the first substrate is opposite to the second surface of the second substrate, the first antenna is arranged on the first surface of the first substrate, and the coupling enhancement structure is arranged on the second surface of the second substrate; the coupling enhancement structure comprises a radiation gap, and the radiation gap corresponds to the position of a current strong point on a radiator of the first antenna; the current strong point is the position of the maximum current on the radiator of the first antenna when the first antenna works in the first working mode; the length extension direction of the radiation slot is perpendicular to the current direction on the radiator of the first antenna. This application is through the coupling reinforcing structure in the antenna module on design length extending direction and the radiating body of first antenna on the current direction vertically radiation gap, and this radiation gap corresponds with the current strong point position on the radiating body of first antenna, the coupling reinforcing structure can be at first antenna during operation, through the current strong point on self coupling change first antenna to change resonant frequency, widened the radiation bandwidth of antenna, improved the radiation efficiency of antenna.
Referring to fig. 12, a schematic structural diagram of a terminal according to an exemplary embodiment of the present application is shown. As shown in fig. 12, the terminal 1200 includes a first antenna module 1201, a second antenna module 1202, a third antenna module 1203, and a fourth antenna module 1204, and a plurality of antenna modules may share a same ground plane 1205. The first antenna module 1201, the second antenna module 1202, the third antenna module 1203 and the fourth antenna module 1204 can all adopt the antenna modules provided in fig. 2 or fig. 6. Optionally, when the terminal uses one or two antenna modules to send data such as messages and videos, the terminal may enable one antenna module to operate in the first operating mode, and the radiation slot on the coupling enhancement structure in the antenna module may reduce the resonant frequency of the antenna in the antenna module in the first operating mode, thereby improving the radiation efficiency.
For example, the terminal is a mobile phone used by people in daily life, please refer to fig. 13, which shows a schematic side cross-sectional view of a mobile phone according to an exemplary embodiment of the present application. As shown in fig. 13, the mobile phone 1300 includes a battery cover 1301, a metal middle frame 1302, a display 1303, a first antenna 1304, and a coupling enhancing structure 1305. Where the first antenna 1304 is a planar inverted F antenna, the coupling enhancement structure 1305 may be in the form of any of the above-described fig. 6, fig. 8, or fig. 10. The metal middle frame 1302 may correspond to the first substrate in the above embodiments, that is, the first substrate is a metal middle frame of a mobile phone, and the battery cover 1301 corresponds to the second substrate in the above embodiments, that is, the second substrate is a battery cover of the mobile phone.
When the form of the coupling enhancement structure 1305 in the handset adopts the above-mentioned fig. 6, when the first antenna 1304 operates in the resonant mode with 1/2 wavelength, the radiation gap on the coupling enhancement structure 1305 may change the current intensity point on the first antenna 1304 in the resonant mode with 1/2 wavelength, and reduce the resonant frequency when the first antenna 1304 operates in the resonant mode with 1/2 wavelength, thereby improving the radiation efficiency of the first antenna 1304. Similarly, when the form of the coupling enhancement structure 1305 in the handset adopts the above-mentioned fig. 8, fig. 10 or other modes, the current intensity point in the corresponding operation mode can also be influenced, and the resonant frequency of the first antenna 1304 when operating in the operation mode is reduced, so as to improve the radiation efficiency of the first antenna 1304. And will not be described in detail herein.
To sum up, the antenna module that this application provided includes: the antenna comprises a first antenna, a coupling enhancement structure, a first substrate and a second substrate; the first surface of the first substrate is opposite to the second surface of the second substrate, the first antenna is arranged on the first surface of the first substrate, and the coupling enhancement structure is arranged on the second surface of the second substrate; the coupling enhancement structure comprises a radiation gap, and the radiation gap corresponds to the position of a current strong point on a radiator of the first antenna; the current strong point is the position of the maximum current on the radiator of the first antenna when the first antenna works in the first working mode; the length extension direction of the radiation slot is perpendicular to the current direction on the radiator of the first antenna. This application is through the coupling reinforcing structure in the antenna module on design length extending direction and the radiating body of first antenna on the current direction vertically radiation gap, and this radiation gap corresponds with the current strong point position on the radiating body of first antenna, the coupling reinforcing structure can be at first antenna during operation, through the current strong point on self coupling change first antenna to change resonant frequency, widened the radiation bandwidth of antenna, improved the radiation efficiency of antenna.
It should be understood that reference to "and/or" in this document describing an associative relationship of case objects means that there may be three relationships, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. An antenna module, characterized in that, the antenna module includes: the antenna comprises a first antenna, a coupling enhancement structure, a first substrate and a second substrate;
the first surface of the first substrate is opposite to the second surface of the second substrate, the first antenna is arranged on the first surface of the first substrate, and the coupling enhancement structure is arranged on the second surface of the second substrate;
the coupling enhancement structure comprises a second radiation gap group;
the second radiation slot group comprises three radiation slots which are arranged at equal intervals along the current direction on the radiator of the first antenna;
a second radiation slot corresponds to a position of a third current strong point on a radiator of the first antenna, where the third current strong point is a position where a current is maximum on the radiator of the first antenna when the first antenna operates in a resonant mode at 1/2 wavelengths, and the second radiation slot is a radiation slot in an intermediate position in the second radiation slot group;
a third radiation slot and a fourth radiation slot correspond to a fourth current strong point on a radiator of the first antenna respectively, the fourth current strong point is a position where a current on the radiator of the first antenna is the maximum when the first antenna operates in a resonant mode with 1 wavelength, and the third radiation slot and the fourth radiation slot are radiation slots in the second radiation slot group except the second radiation slot respectively;
the length extension direction of the radiation slot included in the second radiation slot group is perpendicular to the current direction on the radiator of the first antenna.
2. The antenna module of claim 1, wherein the first antenna is any one of a planar inverted-F antenna, an inverted-F antenna, or a patch antenna.
3. The antenna module of claim 1, wherein a spacing between the radiating slot and the first antenna is greater than or equal to 0.2 mm.
4. The antenna module of claim 1, wherein the operating frequency band of the first antenna is a Sub-6G frequency band in a 5G frequency band.
5. An antenna module, characterized in that, the antenna module includes: the antenna comprises a first antenna, a coupling enhancement structure, a first substrate and a second substrate;
the first surface of the first substrate is opposite to the second surface of the second substrate, the first antenna is arranged on the first surface of the first substrate, and the coupling enhancement structure is arranged on the second surface of the second substrate;
the coupling enhancement structure comprises a first radiation gap;
first radiation gap with the position of first electric current strong point on the irradiator of first antenna corresponds, first electric current strong point is when first antenna is during operation under the resonant mode of 1/2 wavelength the biggest position of electric current on the irradiator of first antenna, the length extending direction of first radiation gap with on the first base plate the electric current direction of first antenna is perpendicular.
6. An antenna module, characterized in that, the antenna module includes: the antenna comprises a first antenna, a coupling enhancement structure, a first substrate and a second substrate;
the first surface of the first substrate is opposite to the second surface of the second substrate, the first antenna is arranged on the first surface of the first substrate, and the coupling enhancement structure is arranged on the second surface of the second substrate;
the coupling enhancement structure comprises a first radiation gap group;
the first radiation gap group comprises two radiation gaps which are arranged along the current direction on a radiator of the first antenna;
two radiation gaps respectively with the position of the second electric current strong point on the irradiator of first antenna corresponds, the second electric current strong point is when first antenna is during operation under the resonant mode of 1 wavelength the biggest position of electric current on the irradiator of first antenna, the length extending direction of the radiation gap that first radiation gap group contains with on the first base plate the electric current direction of first antenna is perpendicular.
7. A terminal, characterized in that it comprises at least one antenna module according to any one of claims 1 to 6.
8. The terminal of claim 7, wherein the terminal is a mobile phone, the first substrate is a metal bezel of the mobile phone, and the second substrate is a battery cover of the mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911207506.9A CN110867649B (en) | 2019-11-29 | 2019-11-29 | Antenna module and terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911207506.9A CN110867649B (en) | 2019-11-29 | 2019-11-29 | Antenna module and terminal |
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| CN110867649A CN110867649A (en) | 2020-03-06 |
| CN110867649B true CN110867649B (en) | 2022-05-20 |
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| CN111740218B (en) * | 2020-06-29 | 2021-08-06 | 维沃移动通信有限公司 | Electronic device |
| CN111769362B (en) * | 2020-07-08 | 2021-07-23 | Oppo广东移动通信有限公司 | Antenna module and electronic equipment |
| CN117543185B (en) * | 2023-11-14 | 2024-08-09 | 荣耀终端有限公司 | Antenna enhancer |
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| CN102185174A (en) * | 2011-04-01 | 2011-09-14 | 华为终端有限公司 | Wireless terminal and design method of wireless terminal dual antenna system |
| KR101928989B1 (en) * | 2012-05-29 | 2018-12-13 | 삼성전자주식회사 | Antenna device for portable terminal |
| CN103022702A (en) * | 2012-12-25 | 2013-04-03 | 南京邮电大学 | Broadband cavity-backed multi-slot micro-strip antenna with low cross-polarization characteristic |
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