CN111063981B - Antenna assembly and electronic equipment - Google Patents
Antenna assembly and electronic equipment Download PDFInfo
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- CN111063981B CN111063981B CN201911256631.9A CN201911256631A CN111063981B CN 111063981 B CN111063981 B CN 111063981B CN 201911256631 A CN201911256631 A CN 201911256631A CN 111063981 B CN111063981 B CN 111063981B
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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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Abstract
The present invention provides an antenna assembly and an electronic device, the antenna assembly including: the antenna comprises an antenna radiator, a first coupling structure, a second coupling structure and a feed point, wherein the first coupling structure is wound on the outer side of the second coupling structure, and the first coupling structure and the second coupling structure are mutually separated; at least one end of one of the first coupling structure and the second coupling structure is electrically connected to the antenna radiator, and at least one end of the other of the first coupling structure and the second coupling structure is electrically connected to the feeding point. The antenna assembly provided by the invention reduces the loss caused by antenna impedance adjustment or resonant frequency adjustment, and solves the problem of loss caused by adopting lumped elements to adjust the antenna impedance or resonant frequency in the conventional antenna.
Description
Technical Field
The invention relates to the technical field of display, in particular to an antenna assembly and electronic equipment.
Background
The smart terminals such as the mobile phone need to communicate through a mobile communication network provided by an operator, and can also realize communication connection between the smart devices through various modes such as Wireless Fidelity (WIFI), bluetooth, infrared and the like.
However, due to the compression of the internal space of a mobile terminal such as a mobile phone, the space available for the antenna to be set in the terminal is gradually reduced, and in order to cover multiple frequency bands under the condition of a certain antenna length, the lumped element is used to adjust the impedance or the resonant frequency of the antenna, but the setting of the lumped element introduces a certain loss, which affects the radiation efficiency of the antenna.
Disclosure of Invention
The invention provides an antenna assembly and electronic equipment, which reduce the loss caused by antenna impedance adjustment or resonant frequency adjustment, realize the purpose of non-contact coupling between an antenna radiator and a feed point, effectively avoid the problem of poor contact or poor reliability caused by hard contact connection between the antenna radiator and the feed point, and solve the problem of certain loss caused by adopting lumped elements to adjust the antenna impedance or resonant frequency in the conventional antenna.
In order to achieve the above object, the present invention provides an antenna assembly comprising: an antenna radiator, a first coupling structure, a second coupling structure and a feed point, wherein,
the first coupling structure is wound on the outer side of the second coupling structure, and the first coupling structure and the second coupling structure are mutually separated;
at least one end of one of the first coupling structure and the second coupling structure is electrically connected to the antenna radiator, and at least one end of the other of the first coupling structure and the second coupling structure is electrically connected to the feeding point.
The antenna component provided by the invention comprises an antenna radiator, a first coupling structure, a second coupling structure and a feeding point, wherein the first coupling structure is wound on the outer side of the second coupling structure, the first coupling structure and the second coupling structure are mutually separated, at least one end of one of the first coupling structure and the second coupling structure is electrically connected with the antenna radiator, and at least one end of the other of the first coupling structure and the second coupling structure is electrically connected with the feeding point, so that the first coupling structure and the second coupling structure can play a role of series lumped capacitance, in the adjustment of an antenna, the lower frequency is effectively adjusted, the influence on the higher frequency is less, and meanwhile, the loss caused by antenna impedance adjustment or resonant frequency adjustment is reduced, the antenna has higher radiation efficiency and avoids hard contact connection between the antenna radiator and the feed point. Therefore, the antenna assembly provided by the embodiment reduces the loss caused by the adjustment of the antenna impedance or the adjustment of the resonant frequency, achieves the purpose of adopting non-contact coupling between the antenna radiator and the feeding point, effectively avoids the problem of poor contact or poor reliability caused by the hard contact connection between the antenna radiator and the feeding point, and solves the problem of loss caused by the adjustment of the antenna impedance or the resonant frequency by using the lumped element in the conventional antenna.
In one possible implementation, the first coupling structure is a helical structure, and the helical structure spirals from one end of the second coupling structure to the other end of the second coupling structure.
In one possible implementation, the second coupling structure is a cylindrical conductor, and the cylindrical conductor is horizontally or vertically arranged.
In one possible implementation manner, the method further includes: the antenna radiator is electrically connected with one of the first coupling structure and the second coupling structure through the first connector, and the feeding point is electrically connected with the other one of the first coupling structure and the second coupling structure through the second connector.
In a possible implementation manner, the first end of the first coupling structure is electrically connected to the antenna radiator through a first connection element, and the end of the second coupling structure close to the second end of the first coupling structure is electrically connected to the feeding point through a second connection element; alternatively, the first and second electrodes may be,
the first end of the second coupling structure is electrically connected with the antenna radiator through a first connecting piece, and the end, close to the second end of the second coupling structure, of the first coupling structure is electrically connected with the feed point through a second connecting piece.
In a possible implementation manner, a middle portion of one of the first coupling structure and the second coupling structure is electrically connected to the antenna radiator through the first connecting piece, and one end or a middle portion of the other of the first coupling structure and the second coupling structure is electrically connected to the feeding point through the second connecting piece, or
One end of one of the first coupling structure and the second coupling structure is electrically connected with the antenna radiator through the first connecting piece, and the middle of the other one of the first coupling structure and the second coupling structure is electrically connected with the feeding point through the second connecting piece.
In a possible implementation manner, both ends of one of the first coupling structure and the second coupling structure are electrically connected to the antenna radiator through the first connection element, both ends or a middle portion of the other of the first coupling structure and the second coupling structure are electrically connected to the feeding point through the second connection element, or,
the middle of one of the first coupling structure and the second coupling structure is electrically connected with the antenna radiator through the first connecting piece, and two ends of the other of the first coupling structure and the second coupling structure are electrically connected with the feeding point through the second connecting piece.
In one possible implementation, a gap exists between the first coupling structure and the second coupling structure, or the gap between the first coupling structure and the second coupling structure is filled with a non-conductive material to separate the first coupling structure from the second coupling structure.
In one possible implementation manner, the first connecting piece and the second connecting piece are both conductive pieces.
The present invention also provides an electronic device comprising: the antenna assembly comprises a circuit board and the antenna assembly, wherein a feeding point in the antenna assembly is positioned on the circuit board, and a feed source on the circuit board feeds high-frequency current to an antenna radiator in the antenna assembly through the feeding point.
The construction of the present invention and other objects and advantages thereof will be more apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;
fig. 1B is a schematic split-structure diagram of a first coupling structure and a second coupling structure in an antenna assembly according to an embodiment of the present invention;
fig. 2 is a graph illustrating return loss of an antenna assembly according to an embodiment of the present invention when the number of turns of the first coupling structure is different;
fig. 3A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;
fig. 3B is a schematic diagram illustrating a split structure of a first coupling structure and a second coupling structure in an antenna assembly according to an embodiment of the present invention;
fig. 4A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;
fig. 4B is a schematic diagram illustrating a split structure of a first coupling structure and a second coupling structure in an antenna assembly according to an embodiment of the present invention;
fig. 5A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;
fig. 5B is a schematic diagram illustrating a split structure of a first coupling structure and a second coupling structure in an antenna assembly according to an embodiment of the present invention;
fig. 6A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;
fig. 6B is a schematic diagram illustrating a split structure of a first coupling structure and a second coupling structure in an antenna assembly according to an embodiment of the present invention;
fig. 7A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;
fig. 7B is a schematic diagram illustrating a split structure of a first coupling structure and a second coupling structure in an antenna assembly according to an embodiment of the present invention;
fig. 8A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;
fig. 8B is a schematic diagram illustrating a split structure of a first coupling structure and a second coupling structure in an antenna assembly according to an embodiment of the present invention;
fig. 9A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;
fig. 9B is a schematic diagram illustrating a split structure of a first coupling structure and a second coupling structure in an antenna assembly according to an embodiment of the present invention;
fig. 10A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;
fig. 10B is a schematic diagram illustrating a split structure of a first coupling structure and a second coupling structure in an antenna assembly according to an embodiment of the present invention;
fig. 11A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;
fig. 11B is a schematic diagram illustrating a split structure of a first coupling structure and a second coupling structure in an antenna assembly according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of an antenna assembly in an electronic device according to a second embodiment of the present invention.
Description of reference numerals:
10-an antenna radiator; 11-a first radiation branch; 12-a second radiation branch; 21-a first coupling structure;
211-a first end of a first coupling structure; 212-a second end of the first coupling structure;
22-a second coupling structure; 221-a first end of a second coupling structure;
222-a second end of the second coupling structure; 31-a first connector; 40-circuit board.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the 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. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The following explains nouns used in the specification:
lumped element (Lumped element): the physical dimensions of the actual circuit elements or components, which are known as lumped elements, are much smaller and negligible than the wavelength of the electromagnetic wave signal passing through it.
The Lumped capacitance (Lumped capacitance) refers to the capacitance in a Lumped circuit, in a general circuit analysis, all parameters of the circuit, such as impedance, capacitive reactance, and inductive reactance, are concentrated on each point in space and each element, signals between the points are transmitted instantaneously, this idealized circuit model is called a Lumped circuit, and the Lumped circuit (Lumped circuit) is a circuit composed of many Lumped elements (Lumped elements) such as power supply, resistance, capacitance, inductance, and the like.
Example one
Fig. 1A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention, fig. 1B is a schematic structural diagram of a first coupling structure and a second coupling structure of the antenna assembly according to the embodiment of the present invention, and fig. 2 is a schematic graph of return loss corresponding to the antenna assembly according to the embodiment of the present invention when the number of turns of the first coupling structure is different.
The present invention provides an antenna assembly that may be employed in an electronic device for transmitting and receiving signals. The Antenna assembly provided by the invention can be a Main Antenna (Main Antenna) in the electronic device, a diversity Antenna (Div Antenna) in the electronic device, a Multiple-Input Multiple-Output (MIMO) Antenna in the electronic device, a WIFI Antenna in the electronic device, or a bluetooth or Global Positioning System (GPS) Antenna in the electronic device.
In this embodiment, as shown in fig. 1A and 1B, the antenna assembly may include: the antenna radiator 10, the first coupling structure 21, the second coupling structure 22 and the feeding point (not shown), wherein the first coupling structure 21 is wound outside the second coupling structure 22, for example, the first coupling structure 21 may be wound outside the second coupling structure 22 around the axial direction of the second coupling structure 22, and the first coupling structure 21 and the second coupling structure 22 are spaced apart from each other, for example, the first coupling structure 21 and the second coupling structure 22 are non-contact and spaced apart from each other. In this embodiment, at least one end of one of the first coupling structure 21 and the second coupling structure 22 is electrically connected to the antenna radiator 10, and at least one end of the other one of the first coupling structure 21 and the second coupling structure 22 is electrically connected to the feeding point. For example, at least one end of the first coupling structure 21 may be electrically connected to the antenna radiator 10, and at least one end of the second coupling structure 22 may be electrically connected to the feeding point, so that the feed source (i.e., the signal source) may feed a high frequency current into the second coupling structure 22 through the feeding point, and the second coupling structure 22 and the first coupling structure 21 are excited by coupling such that the high frequency current is fed to the antenna radiator 10 through the first coupling structure 21, and the antenna radiator 10 radiates the high frequency current in the form of an electromagnetic wave. Of course, in other examples, at least one end of the second coupling structure 22 may be electrically connected to the antenna radiator 10, and at least one end of the first coupling structure 21 may be electrically connected to the feeding point.
In the present embodiment, the feeding point is connected to a specific feeding source (i.e., a signal source), and the feeding source feeds a high-frequency current into the first coupling structure 21 or the second coupling structure 22 through the feeding point and emits the high-frequency current outwards in an electromagnetic wave manner through the antenna radiator 10, so that the feeding point is often disposed on the circuit board and electrically connected to the rf module disposed on the circuit board. Of course, in some other examples, a grounding point (feed point) is further included, and the antenna radiator 10 is grounded through the grounding point, in this embodiment, the antenna radiator 10 is not provided with the grounding point, and the antenna assembly may be used as a monopole antenna.
In this embodiment, by providing the first coupling structure 21 and the second coupling structure 22, the first coupling structure 21 and the second coupling structure 22 can achieve an effect of series lumped capacitance, that is, the first coupling structure 21 and the second coupling structure 22 are connected in series in the antenna circuit as a capacitor, so that the first coupling structure 21 and the second coupling structure 22 can achieve an adjustment of antenna impedance or resonant frequency as a capacitor, and therefore, the first coupling structure 21 and the second coupling structure 22 can achieve an adjustment of antenna impedance or resonant frequency, so that the antenna radiator 10 can cover multiple frequency bands. Wherein, under the coupling effect, the equivalent capacitance is according to the capacitance characteristic: the capacitive reactance X is 1/(j ω C), ω is 2 pi f, j is a complex number, C is a capacitance value, and the capacitance value of the capacitor is smaller as the frequency is higher, so that the series capacitance has a large influence on low frequency and a small influence on high frequency, and therefore, in this embodiment, the equivalent capacitance can effectively adjust the frequency band with lower antenna frequency and has a small influence on performance with higher frequency.
Meanwhile, in this embodiment, the first coupling structure 21 and the second coupling structure 22 are both two conductor structures, and compared with a circuit in which a lumped element is disposed, the loss of the first coupling structure 21 and the second coupling structure 22 is smaller, so compared with the prior art, in this embodiment, the loss caused by antenna impedance adjustment or resonant frequency adjustment is reduced, so that the antenna has higher radiation efficiency.
In addition, in the present embodiment, the first coupling structure 21 and the second coupling structure 22 realize feeding of a high-frequency current through a coupling excitation manner, so that the first coupling structure 21 and the second coupling structure 22 are in a non-contact state, and thus, the problem of poor monomer or poor reliability caused by direct connection through hard contact can be effectively avoided.
In this embodiment, the first coupling structure 21 is wound around the outer side of the second coupling structure 22, and the second coupling structure 22 can be inserted into the space surrounded by the first coupling structure 21, so that the gap and the overlapping area can be flexibly adjusted, the coupling effect can be flexibly adjusted, and the design requirement can be easily met.
It should be noted that, in the present embodiment, the first coupling structure 21 and the second coupling structure 22 are spaced apart by a distance that ensures that the two coupling structures can realize coupling excitation.
In this embodiment, the antenna radiator 10 may include, as shown in fig. 1A: the antenna comprises a first radiation branch 11 and a second radiation branch 12, wherein the first radiation branch 11 can cover a low-frequency band (700-. The method is specifically set according to actual requirements.
Therefore, the present embodiment provides an antenna assembly, which includes an antenna radiator 10, a first coupling structure 21, a second coupling structure 22 and a feeding point, wherein the first coupling structure 21 is disposed around the outside of the second coupling structure 22, and the first coupling structure 21 and the second coupling structure 22 are spaced apart from each other, at least one end of one of the first coupling structure 21 and the second coupling structure 22 is electrically connected to the antenna radiator 10, and at least one end of the other of the first coupling structure 21 and the second coupling structure 22 is electrically connected to the feeding point, so that the first coupling structure 21 and the second coupling structure 22 can function as a lumped capacitor, and in adjusting the antenna, the lower frequency is effectively adjusted, and the higher frequency is less affected, and at the same time, the loss caused by the antenna impedance adjustment or the resonant frequency adjustment is reduced, so that the antenna has higher radiation efficiency, but also a hard contact connection between the antenna radiator 10 and the feed point is avoided. Therefore, the antenna assembly provided by the embodiment reduces the loss caused by the adjustment of the antenna impedance or the adjustment of the resonant frequency, achieves the purpose of adopting non-contact coupling between the antenna radiator 10 and the feeding point, effectively avoids the problem of poor contact or poor reliability caused by the hard contact connection between the antenna radiator 10 and the feeding point, and solves the problem of loss caused by the adjustment of the antenna impedance or the resonant frequency by using the lumped element in the conventional antenna.
Further, on the basis of the above-mentioned embodiment, in the present embodiment, the first coupling structure 21 is a spiral structure, and the spiral structure is screwed from one end of the second coupling structure 22 to the other end of the second coupling structure 22, for example, as shown in fig. 1B, the first coupling structure 21 is screwed from the top end of the second coupling structure 22 to the bottom end of the second coupling structure 22. In this embodiment, the number of the spiral turns of the first coupling structure 21 may be multiple, for example, the number of the spiral turns of the first coupling structure 21 may be 2 turns, or may be 3 turns or more than 4 turns, and the number of the spiral turns of the first coupling structure 21 is specifically set according to actual requirements.
Fig. 2 shows the return loss curves corresponding to the antenna assembly when the number of turns of the first coupling structure 21 is 2 turns and 4 turns, and it can be seen in fig. 2 that three resonance frequencies appear on the return loss curve, so the antenna assembly can cover the low, medium and high frequency bands, and meanwhile, when the number of turns of the first coupling structure 21 is 4 turns, the low frequency resonance point in the return loss curve is shifted to the left relative to the resonance point when the number of turns of the first coupling structure 21 is 2 turns, i.e. the number of turns of the first coupling structure 21 is more, the resonance frequency corresponding to the low frequency is lower, i.e. the lower low frequency band is covered; the middle frequency resonance point in the wave loss curve is shifted to the right relative to the resonance point when the number of spiral turns of the first coupling structure 21 is 2, that is, the larger the number of spiral turns of the first coupling structure 21 is, the higher the resonance frequency corresponding to the middle frequency is. The high-frequency resonance point in the wave loss curve is close to the resonance point when the number of spiral turns of the first coupling structure 21 is 2 turns, so the number of spiral turns of the first coupling structure 21 is more, the influence on the resonance frequency of the high-frequency band is smaller, however, when the number of spiral turns of the first coupling structure 21 is 4 turns, the return loss of the antenna assembly is smaller than the return loss when the number of spiral turns of the first coupling structure 21 is 2 turns, so the larger the number of spiral turns of the first coupling structure 21 is, and the radiation efficiency of the antenna assembly is higher.
Further, in addition to the above-described embodiments, in the present embodiment, the second coupling structure 22 is a cylindrical conductor, for example, as shown in fig. 1A, the second coupling structure 22 is a cylindrical conductor, but the second coupling structure 22 may also be a square-cylindrical conductor. In the present embodiment, the columnar conductors may be arranged horizontally (see fig. 4A), or the columnar conductors may be arranged vertically (see fig. 4A).
Further, on the basis of the above embodiment, in this embodiment, the method further includes: a first connection 31 and a second connection 32, the antenna radiator 10 being electrically connected to one of the first coupling structure 21 and the second coupling structure 22 through the first connection 31, and the feeding point being electrically connected to the other of the first coupling structure 21 and the second coupling structure 22 through the second connection 32. For example, the first connector 31 connects the antenna radiator 10 to one end of the first coupling structure 21, and the second connector 32 connects the second coupling structure 22 to the feeding point. In this embodiment, the first connector 31 and the second connector 32 may be conductive sheets or conductive elastic sheets, and the first connector 31 and the second connector 32 may be connected to the antenna radiator 10, the first coupling structure 21, the second coupling structure 22, and the feeding point by welding, clamping, or fastening members (e.g., screws).
Further, on the basis of the above embodiments, in this embodiment, as shown in fig. 1A and fig. 1B, the first end 211 of the first coupling structure 21 is electrically connected to the antenna radiator 10 through the first connection element 31, that is, one end of the first connection element 31 is connected to the antenna radiator 10, the other end of the first connection element 31 is connected to the first end 211 of the first coupling structure 21, one end of the second coupling structure 22 close to the second end 212 of the first coupling structure 21 is electrically connected to the feeding point through the second connection element 32, for example, one end of the second connection element 32 is connected to the second end 222 of the second coupling structure 22, and the other end of the second connection element 32 is connected to the feeding point.
Alternatively, fig. 3A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention, and fig. 3B is a schematic structural diagram of a first coupling structure 21 and a second coupling structure 22 of the antenna assembly according to the embodiment of the present invention, as shown in fig. 3A and fig. 3B, the second coupling structure 22 is vertically disposed, for example, the second coupling structure 22 may be perpendicular to the antenna radiator 10. In this embodiment, the first end 221 of the second coupling structure 22 is electrically connected to the antenna radiator 10 through the first connection element 31, one end of the first connection element 31 is connected to the antenna radiator 10, the other end of the first connection element 31 is connected to the first end 221 of the second coupling structure 22, one end of the first coupling structure 21 close to the second end 222 of the second coupling structure 22 is electrically connected to the feeding point through the second connection element 32, that is, one end of the second connection element 32 is connected to the second end 212 of the first coupling structure 21 (i.e., one end close to the second end 222 of the second coupling structure 22), and the other end of the second connection element 32 is electrically connected to the feeding point. Therefore, the feed source feeds a high-frequency current into the first coupling structure 21 through the feed point, the second coupling structure 22 is coupled and excited with the first coupling structure 21, the high-frequency current feeds the high-frequency current into the antenna radiator 10 through the second coupling structure 22, and the high-frequency current is converted into electromagnetic waves on the antenna radiator 10 to be emitted outwards, so that signal transmission or signal reception is realized.
Further, on the basis of the above-described embodiment, in the present embodiment, a middle portion of one of the first coupling structure 21 and the second coupling structure 22 is electrically connected to the antenna radiator 10 through the first connection member 31, and one end or a middle portion of the other of the first coupling structure 21 and the second coupling structure 22 is electrically connected to the feeding point through the second connection member 32, or one end of one of the first coupling structure 21 and the second coupling structure 22 is electrically connected to the antenna radiator 10 through the first connection member 31, and a middle portion of the other of the first coupling structure 21 and the second coupling structure 22 is electrically connected to the feeding point through the second connection member 32.
For example, fig. 4A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention, and fig. 4B is a schematic structural diagram of a first coupling structure 21 and a second coupling structure 22 of the antenna assembly according to an embodiment of the present invention, and as shown in fig. 4A-4B, the second coupling structure 22 is horizontally disposed, for example, the second coupling structure 22 may be horizontally disposed with respect to the antenna radiator 10, in this embodiment, the first end 221 of the second coupling structure 22 is electrically connected to the antenna radiator 10 through the first connecting component 31, and a middle portion of the first coupling structure 21 is electrically connected to the feeding point through the second connecting component 32, where in this embodiment, it should be noted that the middle portion of the first coupling structure 21 or the second coupling structure 22 may be a middle position or a non-end position of the first coupling structure 21 or the second coupling structure 22.
Alternatively, fig. 5A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention, and fig. 5B is a schematic structural diagram of a split structure of the first coupling structure 21 and the second coupling structure 22 in the antenna assembly according to the embodiment of the present invention, as shown in fig. 5A-5B, the second coupling structure is horizontally disposed, the second coupling structure 22 may be arranged horizontally with respect to the antenna radiator 10, for example, in this embodiment, the middle portion of the first coupling structure 21 is electrically connected to the antenna radiator 10 by a first connection member 31, i.e., one end of the first connector 31 is electrically connected to the antenna radiator 10, the other end of the first connector 31 is electrically connected to the middle portion of the first coupling structure 21, and the second end 222 of the second coupling structure 22 is electrically connected to the feeding point through the second connector 32, and, of course, in some other examples, the first end 221 of the second coupling structure 22 may also be electrically connected with the feeding point.
Alternatively, fig. 6A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention, and fig. 6B is a schematic structural diagram of a split structure of a first coupling structure 21 and a second coupling structure 22 in the antenna assembly according to an embodiment of the present invention, as shown in fig. 6A-6B, the second coupling structure is horizontally disposed, for example, the second coupling structure 22 may be horizontally disposed with respect to the antenna radiator 10, in this embodiment, a middle portion of the second coupling structure 22 is electrically connected to the antenna radiator 10 through a first connection component 31, and a first end 211 of the first coupling structure 21 is electrically connected to the feeding point through a second connection component 32, but in some other examples, a second end of the first coupling structure 21 may also be electrically connected to the feeding point.
Alternatively, fig. 7A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention, and fig. 7B is a schematic structural diagram of a first coupling structure 21 and a second coupling structure 22 of the antenna assembly according to the embodiment of the present invention, as shown in fig. 7A-7B, the second coupling structure is horizontally disposed, for example, the second coupling structure 22 may be horizontally disposed with respect to the antenna radiator 10, in this embodiment, a middle portion of the second coupling structure 22 is electrically connected to the antenna radiator 10 through a first connection component 31, and a middle portion of the first coupling structure 21 is electrically connected to the feeding point through a second connection component 32. I.e. the first connector 31 and the second connector 32 are electrically connected to the middle of the first coupling structure 21 and the second coupling structure 22.
Further, on the basis of the above embodiment, in this embodiment, both ends of one of the first coupling structure 21 and the second coupling structure 22 are electrically connected to the antenna radiator 10 through the first connection member 31, both ends or a middle portion of the other one of the first coupling structure 21 and the second coupling structure 22 are electrically connected to the feeding point through the second connection member 32, or a middle portion of one of the first coupling structure 21 and the second coupling structure 22 is electrically connected to the antenna radiator 10 through the first connection member 31, and both ends of the other one of the first coupling structure 21 and the second coupling structure 22 are electrically connected to the feeding point through the second connection member 32.
For example, fig. 8A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention, and fig. 8B is a schematic structural diagram of a first coupling structure 21 and a second coupling structure 22 of the antenna assembly according to the embodiment of the present invention, as shown in fig. 8A-8B, a middle portion of the first coupling structure 21 is electrically connected to the antenna radiator 10 through a first connecting piece 31, and both ends of the second coupling structure 22 are electrically connected to the feeding point through a second connecting piece 32, that is, both ends of the second coupling structure 22 are respectively electrically connected to both ends of the second connecting piece 32, and at the same time, the second connecting piece 32 is electrically connected to the feeding point, and a high-frequency current is simultaneously fed to both ends of the second coupling structure 22 through the feeding point.
Or, fig. 9A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention, and fig. 9B is a schematic structural diagram of a first coupling structure 21 and a second coupling structure 22 of the antenna assembly according to the embodiment of the present invention, as shown in fig. 9A-9B, the second coupling structure 22 is horizontally disposed, a middle portion of the second coupling structure 22 is electrically connected to the antenna radiator 10 through a first connecting member 31, two ends of the first coupling structure 21 are electrically connected to the feeding point through a second connecting member 32, that is, two ends of the first coupling structure 21 are electrically connected to two ends of the second connecting member 32, and the second connecting member 32 is electrically connected to the feeding point, so that the feeding source feeds a high-frequency current to two ends of the first coupling structure 21 through the feeding point.
Or, fig. 10A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention, and fig. 10B is a schematic structural diagram of a split structure of a first coupling structure 21 and a second coupling structure 22 in the antenna assembly according to an embodiment of the present invention, as shown in fig. 10A-10B, the second coupling structure 22 is horizontally disposed, both ends of the second coupling structure 22 are electrically connected to the antenna radiator 10 through the first connecting parts 31, for example, in fig. 10A, the first end 221 and the second end 222 of the second coupling structure 22 are electrically connected to the antenna radiator 10 through the two first connecting parts 31, both ends of the first coupling structure 21 are electrically connected to the feeding point through the second connecting parts 32, that is, both ends of the first coupling structure 21 are electrically connected to both ends of the second connecting part 32, and the second connecting part 32 is electrically connected to the feeding point, and the feeding source feeds a high-frequency current to both ends of the first coupling structure 21 through the feeding point, and both ends of the second coupling structure 22 feed high frequency current to the antenna radiator 10 through the two first connectors 31, respectively.
Alternatively, fig. 11A is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention, and fig. 11B is a schematic structural diagram of a split structure of a first coupling structure 21 and a second coupling structure 22 in the antenna assembly according to the embodiment of the present invention, as shown in fig. 11A-11B, the second coupling structure 22 is horizontally disposed, two ends of the second coupling structure 22 are electrically connected to the antenna radiator 10 through a first connection member 31, and the antenna radiator 10 is fed with high-frequency current at two locations, for example, in fig. 10A, a first end 221 and a second end 222 of the second coupling structure 22 are electrically connected to the antenna radiator 10 through two first connection members 31, and a middle portion of the first coupling structure 21 is electrically connected to a feeding point through a second connection member 32.
Alternatively, in this embodiment, the second coupling structure 22 may be horizontally disposed, two ends of the first coupling structure 21 are electrically connected to the antenna radiator 10 through the first connecting member 31, and two ends of the second coupling structure 22 are electrically connected to the feeding point through the second connecting member 32.
Further, on the basis of the above embodiments, in the present embodiment, there is a gap between the first coupling structure 21 and the second coupling structure 22, and the first coupling structure 21 and the second coupling structure 22 are separated by the gap, so that the first coupling structure 21 and the second coupling structure 22 are non-contact, and the feeding of the high-frequency current is realized by a coupling excitation manner. Or, a gap between the first coupling structure 21 and the second coupling structure 22 is filled with a non-conductive material, and the first coupling structure 21 and the second coupling structure 22 are separated by the non-conductive material, for example, an insulating material may be filled between the first coupling structure 21 and the second coupling structure 22, so that the first coupling structure 21 and the second coupling structure 22 realize feeding of high-frequency current through a coupling manner, in this embodiment, the first coupling structure 21 and the second coupling structure 22 are in non-contact, thereby avoiding a hard contact connection between the antenna radiator 10 and a feeding point, achieving a purpose of adopting non-contact coupling between the antenna radiator 10 and the feeding point, and effectively avoiding a problem of poor contact or poor reliability caused by the hard contact connection between the antenna radiator 10 and the feeding point.
Example two
Fig. 12 is a schematic structural diagram of an antenna assembly in an electronic device according to a second embodiment of the present invention.
The second embodiment of the present invention provides an electronic device, which includes, but is not limited to, a mobile terminal or a fixed terminal having an antenna, such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, an intercom, a netbook, a POS machine, a Personal Digital Assistant (PDA), a wearable device, a virtual reality device, a wireless usb disk, a bluetooth speaker/earphone, or a vehicle-mounted front-end device.
In this embodiment, the electronic device may be described by taking a mobile phone as an example, and the electronic device may include: display screen, back lid, center and circuit board 40, wherein, circuit board 40 can set up on the center towards the one side of back lid, and display screen and back lid can be located the both sides of center respectively. As shown in fig. 12, the antenna assembly of any of the above embodiments may also be included, and in this embodiment, the structure, function, and implementation of the antenna assembly may refer to the detailed description in the above embodiments, which is not repeated herein. In the present embodiment, the feeding point in the antenna assembly is located on the circuit board 40, and the feeding source on the circuit board 40 feeds the high-frequency current to the antenna radiator 10 in the antenna assembly through the feeding point. The feed source may be a radio frequency module disposed on the circuit board 40, and the radio frequency module is electrically connected to the feed point, in this embodiment, the circuit board 40 may serve as a reference ground of the antenna assembly, and the antenna assembly may also be electrically connected to a ground point on the circuit board 40 to achieve grounding. Or in this embodiment, when the middle frame is made of a metal material, the middle frame is connected to the ground point of the circuit board 40 to achieve grounding, so the metal plate of the middle frame can be used as a floor, and the antenna assembly can be connected to the middle frame to achieve grounding.
The electronic device provided by the embodiment includes the antenna assembly, so that loss caused by antenna impedance adjustment or resonant frequency adjustment is reduced, the radiation efficiency of the antenna assembly is higher, meanwhile, the purpose of adopting non-contact coupling between the antenna radiator 10 and the feeding point is achieved, the problem of poor contact or poor reliability caused by hard contact connection between the antenna radiator 10 and the feeding point is effectively avoided, and the problem of loss caused by adopting lumped elements to adjust the antenna impedance or resonant frequency in the existing antenna is solved.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.
In the description of the embodiments of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. An antenna assembly, comprising:
an antenna radiator, a first coupling structure, a second coupling structure and a feed point, wherein,
the first coupling structure is wound on the outer side of the second coupling structure, and the first coupling structure and the second coupling structure are mutually separated;
at least one end of one of the first coupling structure and the second coupling structure is electrically connected to the antenna radiator, and at least one end of the other of the first coupling structure and the second coupling structure is electrically connected to the feeding point;
the first coupling structure is a helical structure, and the helical structure is helical from one end of the second coupling structure to the other end of the second coupling structure;
the second coupling structure is a columnar conductor which is horizontally or vertically arranged;
the antenna assembly further includes: the antenna radiator is electrically connected with one of the first coupling structure and the second coupling structure through the first connector, and the feeding point is electrically connected with the other one of the first coupling structure and the second coupling structure through the second connector.
2. The antenna assembly of claim 1, wherein a first end of the first coupling structure is electrically connected to the antenna radiator by a first connector, and an end of the second coupling structure adjacent to a second end of the first coupling structure is electrically connected to the feed point by a second connector; alternatively, the first and second electrodes may be,
the first end of the second coupling structure is electrically connected with the antenna radiator through a first connecting piece, and the end, close to the second end of the second coupling structure, of the first coupling structure is electrically connected with the feed point through a second connecting piece.
3. The antenna assembly of claim 1, wherein a middle portion of one of the first coupling structure and the second coupling structure is electrically connected to the antenna radiator through the first connection member, one end or a middle portion of the other of the first coupling structure and the second coupling structure is electrically connected to the feeding point through the second connection member, or,
one end of one of the first coupling structure and the second coupling structure is electrically connected with the antenna radiator through the first connecting piece, and the middle of the other one of the first coupling structure and the second coupling structure is electrically connected with the feeding point through the second connecting piece.
4. The antenna assembly of claim 1, wherein both ends of one of the first and second coupling structures are electrically connected to the antenna radiator by the first connection member, both ends or a middle portion of the other of the first and second coupling structures are electrically connected to the feeding point by the second connection member, or
The middle of one of the first coupling structure and the second coupling structure is electrically connected with the antenna radiator through the first connecting piece, and two ends of the other of the first coupling structure and the second coupling structure are electrically connected with the feeding point through the second connecting piece.
5. The antenna assembly of claim 1, wherein a gap exists between the first coupling structure and the second coupling structure, or wherein the gap between the first coupling structure and the second coupling structure is filled with a non-conductive material to space the first coupling structure from the second coupling structure.
6. The antenna assembly of claim 1, wherein the first connector and the second connector are both conductive strips.
7. An electronic device, comprising: an antenna assembly as claimed in any one of claims 1 to 6 and a circuit board, a feed point in the antenna assembly being located on the circuit board, a feed on the circuit board feeding high frequency current through the feed point to an antenna radiator in the antenna assembly.
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