CN112993577B - Antenna structure and terminal thereof - Google Patents
Antenna structure and terminal thereof Download PDFInfo
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- CN112993577B CN112993577B CN202110195935.XA CN202110195935A CN112993577B CN 112993577 B CN112993577 B CN 112993577B CN 202110195935 A CN202110195935 A CN 202110195935A CN 112993577 B CN112993577 B CN 112993577B
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 74
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- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
Abstract
The invention discloses an antenna structure and a terminal thereof, wherein the antenna structure is generally applied to an intelligent terminal, and the antenna structure comprises: a metal body, wherein a first through hole is formed on a first side edge of the metal body so as to form a loop antenna; and the antenna plate is connected with the edge feed of the first through hole. The first through hole is arranged on the first side edge of the metal body, so that the annular antenna is formed. Because the metal body is positioned on the intelligent terminal, the internal space of the mobile phone is saved.
Description
Technical Field
The invention relates to the field of antennas, in particular to an antenna structure and a terminal thereof.
Background
An antenna is a transducer that converts guided waves propagating on a transmission line into electromagnetic waves propagating in an unbounded medium (usually free space) or vice versa. Therefore, the antenna is one of important devices for realizing a communication function of a communication terminal such as a mobile phone. In a communication terminal such as a mobile phone, the radiation performance of an antenna is affected by the clearance area and the surrounding metal of the antenna.
With the popularization of 5G technology and the wide application of carrier aggregation (Carrier aggregation, abbreviated as CA) technology in mobile phones, MIMO (2×2,4×4) hard requirements of medium frequency and high frequency ends are more and more increased, so that the number of mobile phone antennas is more and more increased, and the communication mode and the frequency band are supported more and more widely. With the increase of antennas, there is a problem in that the space and the headroom left for the antennas are smaller and smaller. How to effectively layout multiple antennas in the early stages of the handset project is therefore critical to determine the performance of a 5G handset.
EN-DC (E-UTRA-NR Dual Connectivity, chinese abbreviated as 4G-5G dual connectivity) is the most commonly used 5G technology at present, and in short, when a 5G system is used by a mobile phone, the 5G system needs to provide services for users by means of the 4G system, so that the service demands of the users are met. For the antenna, when EN-DC is used, a 4G antenna and a 5G antenna are required to be simultaneously in an operating state.
Thus for earlier evaluation of 5G handset items, different EN-DC combinations are an important factor to consider by antenna engineers in evaluating antenna feasibility. In particular, the EN-DC combination of part of the european and american operators supports a combination of low frequencies (600-960 MHz) and low frequencies. A typical handset has two antennas at low frequencies, namely a main antenna (located at the bottom of the handset) and a diversity antenna (located at the top of the handset), whereas the diversity antenna has only a receiving function, meaning that the diversity antenna cannot be used for EN-DC functions. The obvious problem is that the need to support EN-DC low frequency and low frequency combinations would necessitate the addition of a low frequency antenna. It is well known that the lower the frequency, the more space the antenna occupies. How to add a low frequency antenna by reasonable layout is still an important challenge for antenna engineers to solve.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
The invention aims to solve the technical problem that aiming at the defects in the prior art, the invention provides an antenna structure and a terminal thereof, and aims to solve the technical problem that a terminal antenna occupies a large internal space in the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides an antenna structure comprising:
a metal body, wherein a first through hole is formed on a first side edge of the metal body so as to form a loop antenna;
and the antenna plate is connected with the edge feed of the first through hole.
Further, the antenna structure further includes:
and the first antenna is in feed connection with the antenna board.
Further, the antenna structure further includes:
the second antenna is arranged on the metal middle frame; the second antenna and the first antenna form a coupled resonance.
Further, the frequency of the coupled resonance is higher than the frequency of the loop antenna.
Further, the first antenna includes:
a first transverse portion, the first transverse portion being in feed connection with the antenna panel;
a first longitudinal portion provided at the first transverse portion, the first longitudinal portion extending in a direction away from the first through hole;
the second antenna includes:
a second transverse portion parallel to the first transverse portion;
and the second longitudinal part is arranged on the second transverse part and is parallel to the first transverse part.
Further, a second through hole is formed in the first side of the metal body, the second through hole is communicated with the first through hole, and the second through hole and the antenna board are located on the same side of the first through hole;
the first side of the metal body is provided with a first notch, one end of the first notch is communicated with the second through hole, and the other end of the first notch is communicated with the metal body.
Further, a second notch is formed in the second side of the metal body, and the first side is adjacent to the second side.
Further, the second antenna is connected to the edge of the first notch away from the first through hole.
Further, the metal body includes:
a frame;
the plate body, the plate body with the framework is connected, first through-hole with the second through-hole all set up in on the plate body.
In a second aspect, the present invention provides an intelligent terminal comprising an antenna structure according to any one of the first aspects.
The beneficial effects are that: the invention provides an antenna structure and a terminal thereof, wherein the antenna structure comprises: a metal body, wherein a first through hole is formed on a first side edge of the metal body so as to form a loop antenna; and the antenna plate is connected with the edge feed of the first through hole. The first through hole is arranged on the first side edge of the metal body, so that the annular antenna is formed. Because the metal body is positioned on the intelligent terminal, the internal space of the mobile phone is saved.
Drawings
In order to more clearly describe the technical solutions in the embodiments or the background of the present application, the following description will describe the drawings that are required to be used in the embodiments or the background of the present application.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and, together with the description, serve to explain the technical aspects of the application.
Fig. 1 is a first schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an antenna board in an antenna structure according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a feeding structure in an antenna structure according to an embodiment of the present invention;
fig. 5 is a schematic diagram of connection between an antenna board and a feed structure in an antenna structure according to an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at A;
fig. 7 is a schematic diagram of a first structure of a side spring and a second antenna in an antenna structure according to an embodiment of the present invention;
fig. 8 is a second schematic structural diagram of a second antenna and a side elastic sheet in an antenna structure according to an embodiment of the present invention;
fig. 9 is a third schematic structural diagram of an antenna structure according to an embodiment of the present invention.
1, an intelligent terminal; 2 a metal body; 3, a battery; 4 an antenna board; 30 a grounding structure; 41 a first antenna; a 42 feed structure; a second antenna 51; a 52-side spring plate; 10 a first notch; 20 second notch; a 21 frame; 22 plate bodies; 211 a first side; 212 a second side; 221 a first via; 222 a second via; 411 a first transverse portion; 412 a first longitudinal portion; 511 a second lateral portion; 512 a second longitudinal portion; a base 420; 430 an elastic portion; 431 spring contact arms; 432 an elastic structure; 440 baffles; 450 support portions.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
On the one hand, with the popularization of the 5G technology and the wide application of the carrier aggregation (Carrier aggregation, abbreviated as CA) technology in mobile phones, the requirement on the signal transmission efficiency is higher and higher, and the antenna in the mobile phone is the key for guaranteeing the signal strength, for example, 4x4 MIMO, which is mainly advanced by each large manufacturer, is that four transmitting channels send data, and then four receiving channels are used for receiving and analyzing the data. In a traditional LTE network, a base station adopts 2 antennas, and forms 2X2 MIMO together with a traditional LTE mobile phone. And the base station with 4 antennas is mutually matched with the LTE mobile phone with 4 antennas, so that 4X4 MIMO can be formed. Although the transmission efficiency of the mobile phone is faster and faster through the MIMO antenna layout, the number of mobile phone antennas is increased, and the communication mode and the frequency band are supported more and more widely. With the increase of antennas, there is a problem in that the space and the headroom left for the antennas are smaller and smaller. As consumers pursue the appearance of the mobile phone, it is important to use the space inside the mobile phone and how to design multiple antennas with smaller space to save the space inside the mobile phone.
On the other hand, EN-DC (E-UTRA-NR Dual Connectivity, chinese abbreviated as 4G-5G dual connection) is the most commonly used 5G technology at present, and when EN-DC is used for an antenna, a 4G antenna and a 5G antenna are required to be simultaneously in an operating state. Whereas a typical handset has two antennas for low frequencies, namely a main antenna (located at the bottom of the handset) and a diversity antenna (located at the top of the handset), the diversity antenna has only a receiving function, meaning that the diversity antenna cannot be used for EN-DC functions. The obvious problem is that the need to support EN-DC low frequency and low frequency combinations would necessitate the addition of a low frequency antenna.
Based on this, the embodiment of the present application provides an antenna structure, as shown in fig. 1 to 9, including:
the metal body 2, the first side 211 of the metal body 2 is provided with a first through hole 221 to form a loop antenna; an antenna board 4, the antenna board 4 is connected with the edge feed of the first through hole 221.
In particular, the antenna structure is applied to the smart terminal 1, which smart terminal 1 may be a computing device such as a laptop computer, a computer monitor containing an embedded computer, a tablet computer, a cellular phone, a media player, or other handheld or portable smart terminal 1, a smaller smart terminal 1 (such as a wristwatch device, a hanging device, a headset or earpiece device, a device embedded in glasses or other smart terminal 1 worn on the head of a user, or other wearable or miniature device), a television, a computer display not containing an embedded computer, a gaming device, a navigation device, an embedded system (such as a system in which an electronic device with a display is installed in a kiosk or car), a terminal implementing the functionality of two or more of these smart terminals 1, or other smart terminals 1. In the exemplary configuration of fig. 1, the smart terminal 1 is a portable device, such as a cellular phone, media player, tablet, or other portable computing device. It should be noted that fig. 1 is merely an illustrative example.
The intelligent terminal 1 may communicate using a variety of communication technologies, for example, the intelligent terminal 1 may communicate using one or more of bluetooth communication technology, global positioning system communication technology, wireless fidelity communication technology, global system for mobile communication technology, wideband code division multiple access communication technology, 5G communication technology, SUB-6G communication technology, and other communication technologies in the future.
With the development of communication technology, in the intelligent terminal 1, there are multiple MIMO antennas, and multiple antennas such as a low-frequency main antenna and a low-frequency diversity antenna, so as to implement multiple communication functions of the intelligent terminal 1.
The metal body 2 is used for forming the external contour of the intelligent terminal 1, and the metal body 2 may be in a regular shape, such as a cuboid structure, a rectangular structure, or an irregular shape. The metal body 2 may be integrally formed or may be formed by a combination of structures. The metal body 2 may be made of a metal material having good electrical conductivity, such as stainless steel or aluminum. The metal body 2 may comprise a plurality of sides, such as four sides. The metal body 2 is used for placing components (not shown in the figure) such as a circuit board, a battery 3, a display screen and the like of the intelligent terminal 1.
In one embodiment, a first through hole 221 is disposed on the first side 211 of the metal body 2, where the first side 211 is mostly a long side of the smart terminal 1, and the shape of the first through hole 221 may be generally elongated. The antenna board 4 is connected to the edge feed of the first through hole 221 of the metal body 2, specifically, the antenna board 4 is used for placing a feed structure 42, the radio frequency signal is led from the main board to the edge of the first through hole 221 of the metal body 2 through the feed structure 42, and the feed structure 42 is electrically connected to the bottom of the metal body 2 and led to a grounding area so as to form a loop antenna.
That is, the feeding structure 42 is disposed on the antenna board 4, for providing a radio frequency signal, that is, transmitting a signal emitted from the smart terminal 1 from the antenna board 4 to the loop antenna, and in particular, the antenna board 4 is embedded with a signal transmission line (not shown), and the feeding structure 42 may contact the signal transmission line, thereby providing the signal on the antenna board 4 to the loop antenna. The loop antenna transmits the signal. Therefore, the loop antenna can not only receive electromagnetic wave signals, but also transmit electromagnetic wave signals.
On the basis of the above embodiment, there are various ways to realize the feeding connection between the antenna board 4 and the loop antenna, such as by a spring or by a spring pin.
In a preferred embodiment, the signal transmission between the antenna plate 4 and the loop antenna is achieved by means of an antenna feed spring. That is, in this embodiment, the feeding structure 42 is a feeding spring, which is used for introducing the radio frequency signal,
specifically, the antenna board 4 is provided for power feeding and supporting of the antenna, and the antenna board 4 may be a Printed Circuit Board (PCB). The antenna board 4 has a planar flat plate structure, and in some embodiments the antenna board 4 may be implemented in the form of a single substrate, and in other embodiments the antenna board 4 may be implemented by laminating a plurality of substrates together.
As shown in fig. 5 to 6, the feeding spring piece includes a base 420 and an elastic portion 430, specifically, the base 420 of the feeding spring piece is attached to the antenna board 4 by welding, so as to fix the feeding spring piece to the antenna board 4, or, of course, the feeding spring piece may be detachably fixed to the antenna board 4, and the antenna board 4 is connected to the feeding spring piece by feeding, the elastic portion 430 is connected to the base 420 and disposed on two sides of the antenna board 4, and the elastic portion 430 includes an elastic structure 432 extending from the base 420 in a reciprocating manner, and an elastic contact arm 431 connected to a free end of the elastic structure 432, where in this embodiment, the elastic structure 432 is formed by sequentially overlapping at least two ends of the elastic arm, and the elastic arm is in an arc shape. In other embodiments, the elastic structure 432 may be a structure that is spirally bent and extended from the base 420. The elastic structure 432 is configured to provide a certain elastic force to the elastic contact arm 431, so that the elastic contact arm 431 can tightly abut against the bottom frame of the metal body 2. Thereby transmitting radio frequency signals from the antenna plate 4 to the loop antenna.
On the inner side of the antenna board 4 (the side close to the bottom frame), the elastic contact arm 431 is used to make feeding contact with the loop antenna under the elastic force of the elastic structure 432. Further, the elastic portion 430 is in a petal shape, the connection between the base portion 420 and the elastic portion 430 is in an arc connection, and the elastic portion 430 and the base portion 420 can be prevented from being broken due to excessive stress by adopting an arc connection mode. At the same time, the edge of the free end of the elastic structure 432 is also provided in a circular arc shape.
Further, the feeding spring further includes a blocking plate 440, and the blocking plate 440 is disposed at two sides of the elastic structure 432, so that the elastic structure 432 does not deflect to two sides when pressed, i.e. always provides elastic force in a direction perpendicular to the antenna board 4.
Further, due to the limitation of the height of the inner space of the intelligent terminal 1, the elastic force of the existing structure of the feeding elastic sheet is prevented from failing to meet the specified requirement, the support portion 450 is added at the outer end of the elastic contact arm 431, and in the process of pressing down the elastic structure 432, the support portion 450 is abutted to the loop antenna in advance, so that additional elastic force is provided for the feeding elastic sheet, and therefore enough elastic force is provided to ensure stable press connection.
In addition, the antenna board 4 includes a dielectric, specifically, the conductivity of the antenna board 4 may be 0.02, the dielectric constant (epsilon) of the antenna board 4 may be 4.4, and the loss factor of the antenna board 4 may be 0.02.
Further, the antenna structure further includes a ground structure 30, the ground structure 30 being provided for grounding the antenna, the ground structure 30 being formed in a portion of the antenna board 4 or in the entire antenna board 4, the ground structure 30 may be provided on at least one of a bottom surface or a top surface of the antenna board 4. When the antenna board 4 includes a plurality of substrates laminated together, the ground structure 30 may be interposed between the plurality of substrates.
Further, resonance may be generated on the loop antenna, and the resonance frequency of the loop antenna may be changed by controlling the length, shape, etc. of the loop antenna.
In a preferred arrangement, the loop antenna is a centrosymmetric loop antenna, resonating at a low frequency, resonating at 0.25 wavelength.
Therefore, in this embodiment, in the first aspect, by disposing the loop antenna at the side of the intelligent terminal 1, the space occupied by the antenna in the intelligent terminal 1 is effectively saved.
On the other hand, it has been mentioned in the foregoing that since there are two antennas, i.e., a main antenna and a diversity antenna (not shown), which generally have low frequencies inside the intelligent terminal 1, the diversity antenna has only a receiving function, meaning that the diversity antenna cannot be applied to EN-DC functions. Therefore, the loop antenna can be used as a low-frequency antenna, and the loop antenna is applied to an EN-DC function, so that the EN-DC can support the combination of low frequency and low frequency, and the 4G-5G dual connection is realized.
In a preferred embodiment, the metal body 2 comprises: the intelligent terminal comprises a frame body 21 and a plate body 22, wherein the frame body 21 and the plate body 22 can be integrally formed, the frame body 21 is a frame of the intelligent terminal 1, the frame body 21 is wrapped around the intelligent terminal 1, and the plate body 22 is arranged in the intelligent terminal 1.
The metal frame of the frame body 21 may be a magnesium alloy frame, and the metal frame and the plate body 22 are integrally formed, for example, by injection molding in a mold in a metal injection molding manner, for example, by integrally forming in a machining manner, and for example, by fixedly connecting in a welding manner.
As shown in fig. 1 to 9, specifically, the frame 21 is a metal frame of the intelligent terminal 1, in this embodiment, the thickness of the metal frame is 15-30 mm, the plate 22 is a metal plate, the plate 22 is disposed on a side edge of the internal battery 3 of the intelligent terminal 1, the plate 22 is provided with a first through hole 221, and the tail end of the plate 22 is connected with a feeding elastic sheet on the antenna board 4, so that the plate 22 forms a loop antenna, and a clearance area is formed between the frame 21 and the embedded metal plate 22, and is used for placing the antenna board 4.
On the basis of the above embodiment, the antenna structure further includes:
a first antenna 41, the first antenna 41 being in feed connection with the antenna board 4;
a second antenna 51, the second antenna 51 being provided to the metal body 2, the second antenna 51 and the first antenna 41 forming a coupled resonance.
Specifically, an antenna bracket (not shown in the drawing) is further disposed inside the intelligent terminal 1, and the first antenna 41 and the second antenna 51 are both fixedly disposed on the antenna bracket.
As shown in the figures, the first antenna 41 also transmits signals between the feeding spring and the antenna board 4, and the structure of the feeding spring is described in detail above and will not be described herein. Unlike the above, the above-mentioned feeding spring is disposed inside the antenna board 4 (on the side close to the bottom frame), and the elastic contact arm 431 is tightly abutted against the bottom frame of the metal body, so that a signal is transmitted from the antenna board 4 to the loop antenna. In the present embodiment, the feeding spring is disposed outside the antenna board 4, and is tightly abutted against the first antenna 41 by the elastic contact arm 431, so that a signal is transmitted from the antenna board 4 to the first antenna 41.
As shown in fig. 3 to 4, the second antenna 51 extends to the antenna support through a side spring 52, the side spring 52 is a metal spring, and the metal body 2 is electrically connected to the second antenna 51 through the side spring 52.
The plate 22 of the metal body 2 in the above embodiment is formed into a loop antenna as a low-frequency antenna, and then an antenna trace is led out from the feed structure 42 on the antenna plate 4 to form the first antenna 41, and the loop antenna extends to the surface of the bracket to generate resonance at 3200-3800 MHz (SUB-6 g n78 frequency band), then a metal frame below the frame 21 of the metal body 2 is used as an antenna parasitic, and the frame extends to the antenna bracket through the side spring plate 52 to form the second antenna 51, and the intermediate frequency resonance is adjusted through the trace length. Finally, a high-frequency resonance is generated by the coupling effect between the first antenna 41 and the second antenna 51.
In this embodiment, the metal frame below the metal frame 21 is used as the antenna parasitics, so that the internal space of the mobile phone is not occupied, and the antenna parasitics are compatible with the requirements of different communication channel frequency bands, so that the cost of manufacturing different versions or increasing the antenna wiring is saved, and the efficiency of receiving signals of different frequency bands by the terminal antenna is improved.
Further, the lower portion of the frame 21 is connected to a ground area, and in a preferred arrangement, the ground area is located at the top of the first side 211 of the frame 21. By connecting the frame 21 to the ground area, the anti-interference capability of the intelligent terminal 1 can be enhanced.
Due to the rapid development of 5G, the design of MIMO antennas, which is commonly used for 4*4, inside the intelligent terminal 1, that is, 4 antennas with the same frequency band is required. The same frequency band here generally refers to medium-high frequency and SUB-6G (medium frequency: 1710-2170 MHz, high frequency: 2300-2700 MHz, SUB-6G: 3000-6000 MHz) supporting 5G frequency band. In this embodiment, the antenna board 4 and the metal body 2 extend out of the first antenna 41 and the second antenna 51, respectively, and the first antenna 41 and the second antenna 51 resonate at a high frequency through a coupling effect, so that the antenna has a function of a MIMO antenna, which is equivalent to increasing the number of 5G antennas, enhancing the signal of the intelligent terminal 1, and relieving the pressure of the MIMO antenna in the intelligent terminal 1.
Furthermore, through the verification of actual adjustment, the low-frequency efficiency of the antenna structure can reach-7 dB, and the requirement of a 4G low-frequency connection function in an EN-DC combination can be completely met. The passive efficiency of the medium-high frequency and 3200-3800 MHz reaches-7 to-8 dB, and the downlink requirement of the multi-MIMO antenna function is met. Therefore, the antenna structure in this embodiment not only can be used as a low-frequency antenna, but also can be applied to the EN-DC function, so that the EN-DC can support the combination of low frequency and low frequency, and can be applied to the intelligent terminal 1 with 5G multiple MIMO antennas.
In the above embodiment, the shapes of the first antenna 41 and the second antenna 51 may be regular or irregular, for example, may be an "L" type antenna or a strip type antenna. Referring to fig. 2 to 3, in a preferred implementation, the first antenna 41 includes:
a first transverse portion 411, the first transverse portion 411 being in feed connection with the antenna board 4;
a first vertical portion 412, the first vertical portion 412 being provided on the first lateral portion 411, the first vertical portion 412 extending in a direction away from the first through hole 221;
the second antenna 51 includes:
a second lateral portion 511, said second lateral portion 511 being parallel to said first lateral portion 411;
a second vertical portion 512, the second vertical portion 512 is disposed at the second lateral portion 511, and the second vertical portion 512 is parallel to the first lateral portion 411.
Specifically, in the present embodiment, the first antenna 41 and the second antenna 51 are both kept at an appropriate distance. The distance between the first antenna 41 and the second antenna 51 is adjusted, and the length of the first antenna 41 and the length of the second antenna 51 are adjusted to adjust the resonant frequency, so that the requirement of compatibility with different communication channel frequency bands is met, the cost of manufacturing different versions or increasing the antenna wiring is saved, and the efficiency of receiving signals in different frequency bands by the terminal antenna is improved.
On the basis of the above embodiment, in order to prevent mutual interference of the signals of the first antenna 41 and the second antenna 51, corresponding filter networks may be placed on two different radio frequency paths.
Further, the first side 211 of the metal body 2 is provided with a second through hole 222, the second through hole 222 is communicated with the first through hole 221, and the second through hole 222 and the antenna board 4 are both positioned on the same side of the first through hole 221;
the first side 211 of the metal body 2 is provided with a first notch 10, one end of the first notch 10 is communicated with the second through hole 222, and the other end is communicated with the outside of the metal body 2.
The second side 212 of the metal body 2 is provided with a second notch 20, and the first side 211 is adjacent to the second side 212.
Further, the second antenna 51 is connected to an edge of the first notch 10 on a side away from the first through hole 221.
Specifically, in this embodiment, the first side 211 is a long side of the intelligent terminal 1, the second side 212 is a short side of the intelligent terminal 1, the first side 211 is provided with the first notch 10 and the second notch 20, the first notch 10 and the second notch 20 are both located on the frame 21 of the metal body 2, a clearance area is formed near the first notch, and the antenna board 4 and the feeding structure 42 are disposed near the first notch 10. The first notch 10 and the second notch 20 enable the metal body 2 to be separated, so that the intelligent terminal 1 is prevented from being completely sealed by the metal body 2, the influence of the metal body 2 on the internal signals of the intelligent terminal 1 is avoided, and the radiation efficiency of the antenna structure of the intelligent terminal 1 is improved. The metal frame formed by the first notch 10 and the second notch 20 is used as an antenna parasitic, and the antenna parasitic enables the first antenna 41 and the second antenna 51 to couple more required frequency bands.
Further, the first notch 10 and the second notch 20 are filled with a non-metal material, preferably an insulating material (e.g., plastic, rubber, glass, etc.), so as to separate the frame 21 of the metal body 2.
In addition, for better appearance, the first notch 10 and the second notch 20 are symmetrically arranged along the axial center line of the metal body 2. Of course, the first notch 10 and the second notch 20 may not be symmetrically disposed along the axial center line of the intelligent terminal 1. The positional symmetry of the first notch 10 and the second notch 20 in the embodiment of the present application is not particularly limited. Of course, other notches may be formed on other sides of the metal body 2, which is not limited in this application and will not be described in detail herein.
In summary, the antenna structure provided by the present invention is applied to the metal intelligent terminal 1 with 5G multiple antennas, and has at least the following advantages:
1. the antenna structure takes the metal frame as a main body, so that the internal space of the mobile phone is saved. And the antenna has simple structure, novel design, small volume and low manufacturing cost.
2. The antenna is used as a low-frequency antenna to be applied to an EN-DC combination, and can realize a 4G low-frequency connection function in the EN-DC combination, so that the 4G-5G dual-connection is realized without additionally arranging a low-frequency antenna.
3. The high-frequency passive efficiency in the antenna meets the downlink requirement of the MIMO antenna function, and can be used as a 5G antenna, so that the mobile terminal can meet the requirement of multiple antennas, the communication capacity and the communication quality of a system channel are improved, and higher user rate is realized.
Based on the same inventive concept, the embodiment of the present application further provides an intelligent terminal 1, where the intelligent terminal 1 includes any one of the antenna structures in the foregoing embodiments. Specific embodiments and beneficial effects of the antenna structure are described in detail before and are not described herein.
The intelligent terminal 1 may further comprise a memory, an input unit, a display unit, a sensor, an audio circuit, a processor, a power supply and other components including one or more computer readable storage media. It will be appreciated by those skilled in the art that the structure of the smart terminal 1 shown in fig. 1 is not limiting to the mobile terminal of the present application, and may include more or fewer components than shown, or may combine certain components, or may be arranged in different components.
The antenna structure has the advantages that the common metal frame of the intelligent terminal such as a 5G mobile phone is combined, through verification of actual debugging, the low-frequency efficiency of the antenna structure reaches-7 dB, and the requirement of a 4G low-frequency connection function in an EN-DC combination can be completely met. The passive efficiency of the medium-high frequency and 3200-3800 MHz reaches-7 to-8 dB, and the downlink requirement of the multi-MIMO antenna function is met. Can be widely applied to the design of a metal machine of 5G multiple antennas.
It should be understood that the above description of the embodiments is only for aiding in understanding the technical solution of the present application and the core ideas thereof; it will be understood by those skilled in the art that the technical solutions described in the foregoing embodiments may be modified or some of the technical features may be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (5)
1. An antenna structure, the antenna structure comprising:
a metal body, wherein a first through hole is formed on a first side edge of the metal body so as to form a loop antenna; the antenna board is connected with edge feed of the first through hole;
the antenna structure further comprises:
the first antenna is in feed connection with the antenna board;
the second antenna is arranged on the metal middle frame; the second antenna and the first antenna form a coupled resonance;
the antenna board is connected with the annular antenna through a feed spring piece;
the feed elastic piece comprises a base part and an elastic part, the elastic part comprises an elastic structure which is bent and extended back and forth from the base part and an elastic contact arm which is connected with the free end of the elastic structure, the elastic structure is formed by sequentially superposing elastic arms at two ends in an end-to-end mode, and the elastic arms are arc-shaped; the first side of the metal body is provided with a second through hole, the second through hole is communicated with the first through hole, and the second through hole and the antenna board are both positioned on the same side of the first through hole; a first notch is formed in the first side edge of the metal body, one end of the first notch is communicated with the second through hole, and the other end of the first notch is communicated with the outside of the metal body;
the metal body includes:
a frame;
the plate body is connected with the frame body, and the first through hole and the second through hole are both arranged on the plate body;
the frame body is a frame of the intelligent terminal, the frame body is wrapped around the intelligent terminal, and the plate body is arranged in the intelligent terminal;
the tail end of the plate body is connected with a feed spring piece on the antenna plate;
a clearance area is formed between the frame body and the embedded metal plate body and is used for placing the antenna plate;
the second antenna is connected to the edge of one side, far away from the first through hole, of the first notch.
2. The antenna structure of claim 1, wherein the coupled resonance has a frequency that is higher than a frequency of the loop antenna.
3. The antenna structure of claim 2, wherein the first antenna comprises:
a first transverse portion, the first transverse portion being in feed connection with the antenna panel;
a first longitudinal portion provided at the first transverse portion, the first longitudinal portion extending in a direction away from the first through hole;
the second antenna includes:
a second transverse portion parallel to the first transverse portion;
and the second longitudinal part is arranged on the second transverse part and is parallel to the first transverse part.
4. The antenna structure of claim 1, wherein the second side of the metal body is provided with a second notch, the first side being adjacent to the second side.
5. An intelligent terminal, characterized by comprising: an antenna structure as claimed in any one of claims 1 to 4.
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| CN202110195935.XA CN112993577B (en) | 2021-02-20 | 2021-02-20 | Antenna structure and terminal thereof |
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| CN202110195935.XA CN112993577B (en) | 2021-02-20 | 2021-02-20 | Antenna structure and terminal thereof |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014106440A1 (en) * | 2013-01-07 | 2014-07-10 | 华为终端有限公司 | Metal ring coupled antenna and handheld communication device |
| CN104183951A (en) * | 2014-04-15 | 2014-12-03 | 深圳市长盈精密技术股份有限公司 | Low-height antenna connector |
| JP3195354U (en) * | 2014-10-28 | 2015-01-15 | 川益科技股▲ふん▼有限公司 | Communication device and communication device antenna |
| CN204230473U (en) * | 2014-11-05 | 2015-03-25 | 深圳市信维通信股份有限公司 | Positive-pressure type elastic sheet connector |
| CN204289798U (en) * | 2014-12-19 | 2015-04-22 | 东莞联基电业有限公司 | Flexible terminal |
| CN105870592A (en) * | 2016-03-23 | 2016-08-17 | 上海传英信息技术有限公司 | Mobile communication equipment, and middle and back cover of mobile communication equipment |
| CN205565080U (en) * | 2015-12-31 | 2016-09-07 | 东莞市尚和电子有限公司 | Cushion durable type spring sheet structure |
| CN105932408A (en) * | 2015-12-18 | 2016-09-07 | 广东工业大学 | High-isolation metal frame LTE tuning antenna |
| KR20170052014A (en) * | 2015-11-03 | 2017-05-12 | 엘지전자 주식회사 | Mobilr terminal |
| CN107394353A (en) * | 2017-07-25 | 2017-11-24 | 捷开通讯(深圳)有限公司 | Three-in-one loop antenna apparatus and mobile terminal |
| CN108511935A (en) * | 2018-01-26 | 2018-09-07 | 深圳市长盈精密技术股份有限公司 | Two-side contact spring |
| CN207852947U (en) * | 2018-01-05 | 2018-09-11 | 东莞市国信精密科技有限公司 | Based on the coplanar contact flat spring of pcb board |
| CN111987454A (en) * | 2020-08-06 | 2020-11-24 | 惠州Tcl移动通信有限公司 | MIMO multi-antenna structure and mobile terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205176A1 (en) * | 2018-04-28 | 2019-10-31 | 华为技术有限公司 | Antenna apparatus and terminal device |
-
2021
- 2021-02-20 CN CN202110195935.XA patent/CN112993577B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014106440A1 (en) * | 2013-01-07 | 2014-07-10 | 华为终端有限公司 | Metal ring coupled antenna and handheld communication device |
| CN104183951A (en) * | 2014-04-15 | 2014-12-03 | 深圳市长盈精密技术股份有限公司 | Low-height antenna connector |
| JP3195354U (en) * | 2014-10-28 | 2015-01-15 | 川益科技股▲ふん▼有限公司 | Communication device and communication device antenna |
| CN204230473U (en) * | 2014-11-05 | 2015-03-25 | 深圳市信维通信股份有限公司 | Positive-pressure type elastic sheet connector |
| CN204289798U (en) * | 2014-12-19 | 2015-04-22 | 东莞联基电业有限公司 | Flexible terminal |
| KR20170052014A (en) * | 2015-11-03 | 2017-05-12 | 엘지전자 주식회사 | Mobilr terminal |
| CN105932408A (en) * | 2015-12-18 | 2016-09-07 | 广东工业大学 | High-isolation metal frame LTE tuning antenna |
| CN205565080U (en) * | 2015-12-31 | 2016-09-07 | 东莞市尚和电子有限公司 | Cushion durable type spring sheet structure |
| CN105870592A (en) * | 2016-03-23 | 2016-08-17 | 上海传英信息技术有限公司 | Mobile communication equipment, and middle and back cover of mobile communication equipment |
| CN107394353A (en) * | 2017-07-25 | 2017-11-24 | 捷开通讯(深圳)有限公司 | Three-in-one loop antenna apparatus and mobile terminal |
| CN207852947U (en) * | 2018-01-05 | 2018-09-11 | 东莞市国信精密科技有限公司 | Based on the coplanar contact flat spring of pcb board |
| CN108511935A (en) * | 2018-01-26 | 2018-09-07 | 深圳市长盈精密技术股份有限公司 | Two-side contact spring |
| CN111987454A (en) * | 2020-08-06 | 2020-11-24 | 惠州Tcl移动通信有限公司 | MIMO multi-antenna structure and mobile terminal |
Non-Patent Citations (3)
| Title |
|---|
| A Multi-Band Metal-Rimmed Antenna for 5G Smartphones;Hancheng Tu等;《2020 IEEE Asia-Pacific Microwave Conference (APMC)》;全文 * |
| 全金属环境下的终端天线研究与设计;陈鹏;《中国优秀硕士学位论文全文数据库 信息科技辑》;全文 * |
| 移动终端内置天线技术及其进展;黎淑兰;刘元安;苏明;;北京邮电大学学报(第02期);全文 * |
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