CN108808221B - Antenna system and mobile terminal - Google Patents
Antenna system and mobile terminal Download PDFInfo
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- CN108808221B CN108808221B CN201810631358.2A CN201810631358A CN108808221B CN 108808221 B CN108808221 B CN 108808221B CN 201810631358 A CN201810631358 A CN 201810631358A CN 108808221 B CN108808221 B CN 108808221B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
Abstract
The invention provides an antenna system and a mobile terminal. A first metal frame in the system is connected with the metal floor through a connecting rib position, and a first gap is formed between the first metal frame and the metal floor. One end of the second metal frame is connected with the metal floor, the second metal frame extends along the direction parallel to the side edge of the metal floor, and a second gap is formed between the second metal frame and the metal floor. The first metal frame is opposite to the second metal frame in port, and a slot gap for realizing coupling excitation is arranged between the first metal frame and the second metal frame. The radio frequency signal source is electrically connected with the first metal frame or the second metal frame through the matching network to form the multi-band antenna. The antenna system can realize multi-band signal communication through one antenna, save the layout area of the antenna, reduce the design cost of the antenna and be beneficial to realizing the lightness and thinness of the body of the mobile terminal.
Description
Technical Field
The invention relates to the technical field of multi-band antennas, in particular to an antenna system and a mobile terminal.
Background
With the continuous development of mobile terminals, people have higher requirements on the appearance size and the equipment performance of the mobile terminal, and the mobile terminal which is widely concerned by people at present needs to be thin and light and can support communication of multi-band antennas (such as a GPS antenna, a WIFI 2.4G antenna, a WIFI 5G antenna and the like). For the communication function of the multi-band antenna of the mobile terminal, in the market, three different frequency band signals are generally split into two antennas, wherein one of the two antennas works in a dual-frequency mode, the other works in a single-frequency mode, and the communication function of the multi-band signals is realized through the two antennas in a mode of adjusting the frequency band corresponding to each antenna according to requirements. The implementation mode of the multiband antenna needs to be implemented by adding a radio frequency device (for example, an antenna bracket) and an LDS (Laser Direct Structuring) device, but the implementation mode increases the layout area of the antenna, which results in the overall thickness of the mobile terminal, and does not meet the requirement of slim appearance, and the implementation mode of the multiband antenna tends to increase the design cost of the antenna.
Disclosure of Invention
In order to overcome the above disadvantages in the prior art, an object of the present invention is to provide an antenna system and a mobile terminal, where the antenna system can implement multi-band signal communication through one antenna, thereby saving the layout area of the antenna, reducing the design cost of the antenna, and facilitating the implementation of the body of the mobile terminal to be light and thin.
Regarding an antenna system, an embodiment of the present invention provides an antenna system, where the antenna system includes a metal floor, a first metal frame, a second metal frame, a matching network, a connecting rib position, and a radio frequency signal source;
the first metal frame is connected with the metal floor through the connecting rib position, and a first gap is formed between the first metal frame and the metal floor;
one end of the second metal frame is connected with the metal floor, the second metal frame extends along the direction parallel to the side edge of the metal floor, and a second gap is formed between the second metal frame and the metal floor;
one end, close to the first gap, of the first metal frame is opposite to the port of the other end of the second metal frame, and a slot gap for realizing coupling excitation is arranged between the ports, opposite to the first metal frame and the second metal frame;
the radio frequency signal source is electrically connected with the first metal frame or the second metal frame through a matching network to form the multi-band antenna. The multi-band antenna comprises two sub-antenna structures, wherein one sub-antenna structure comprises the first metal frame, the first gap, the slot and the metal floor, the other sub-antenna structure comprises the second metal frame, the second gap, the slot and the metal floor, the sub-antenna structure connected with the radio frequency signal source in the two sub-antenna structures supports double-frequency work, and the other sub-antenna structure supports single-frequency work. The metal floor, the whole metal frame, the correspondingly matched gap and the slot in the sub-antenna structure connected with the radio frequency signal source are matched with each other to obtain the resonant frequency supporting a frequency band signal, the matching network and part of the parts, the correspondingly matched gap and the slot, on the metal frame from the position connected with the radio frequency signal source to the position close to the slot are matched with each other to obtain the resonant frequency supporting another frequency band signal, and the metal frame in the other sub-antenna structure obtains the coupling excitation from the sub-antenna structure connected with the radio frequency signal source, and then obtains the resonant frequency supporting a third frequency band signal based on the mutual matching of the metal frame, the metal floor, the correspondingly matched gap and the slot in the sub-antenna structure, thereby carrying out communication aiming at the signals of different frequency bands through the obtained three resonant frequencies, correspondingly saving the antenna area and reducing the antenna design cost, the realization of lightness and thinness of the mobile terminal body is facilitated.
Optionally, in an embodiment of the present invention, the rf signal source is electrically connected to the first metal frame through the matching network, and a feeding position on the first metal frame, which is electrically connected to the matching network, is located on the first metal frame, which is close to the slot.
Optionally, in an embodiment of the present invention, a feeding manner corresponding to the electrical connection between the matching network and the first metal frame includes one of a direct connection feeding manner or a coupling feeding manner.
Optionally, in an embodiment of the present invention, the antenna system further includes a first antenna switch;
one end of the first antenna switch is connected with the first metal frame, and the other end of the first antenna switch is connected with the metal floor and used for tuning the resonant frequency of the antenna comprising the first metal frame.
Optionally, in an embodiment of the present invention, a position where the first metal frame is connected to the first antenna switch is located between a feeding position on the first metal frame and a position corresponding to the connecting rib position.
Optionally, in an embodiment of the present invention, the rf signal source is electrically connected to the second metal frame through the matching network, and a feeding position on the second metal frame, which is electrically connected to the matching network, is located on the second metal frame, which is close to the slot.
Optionally, in an embodiment of the present invention, a feeding manner corresponding to the electrical connection between the matching network and the second metal frame includes one of a direct connection feeding manner or a coupling feeding manner.
Optionally, in an embodiment of the present invention, the antenna system further includes a second antenna switch;
one end of the second antenna switch is electrically connected with the second metal frame, the other end of the second antenna switch is connected with the metal floor and used for tuning the resonant frequency of the antenna comprising the second metal frame, and the position where the second metal frame is connected with the second antenna switch is located between the feeding position on the second metal frame and the seam bottom position of the second gap.
Optionally, in an embodiment of the present invention, a gap width corresponding to the slot is in a range from 0.5mm to 1.0 mm.
As for a terminal, an embodiment of the present invention provides a mobile terminal, where the mobile terminal includes any one of the above antenna systems.
Compared with the prior art, the antenna system and the mobile terminal provided by the embodiment of the invention have the following beneficial effects: the antenna system can realize multi-band signal communication through one antenna, save the layout area of the antenna, reduce the design cost of the antenna and be beneficial to realizing the lightness and thinness of the body of the mobile terminal. A first metal frame in the antenna system is connected with a metal floor through a connecting rib position, and a first gap is formed between the first metal frame and the metal floor. One end of a second metal frame in the antenna system is connected with the metal floor, the second metal frame extends along the direction parallel to the side edge of the metal floor, and a second gap is formed between the second metal frame and the metal floor. One end of the first metal frame, which is close to the first gap, is opposite to the port of the other end of the second metal frame, and a slot gap for realizing coupling excitation is arranged between the ports of the first metal frame and the second metal frame, which are opposite to each other. The radio frequency signal source is electrically connected with the first metal frame or the second metal frame through a matching network, so that a multi-band antenna comprising two sub-antenna structures is formed under the action of the radio frequency signal source, one sub-antenna structure comprises the first metal frame, the first gap, the slot and the metal floor, the other sub-antenna structure comprises the second metal frame, the second gap, the slot and the metal floor, the sub-antenna structures connected with the radio frequency signal source in the two sub-antenna structures support double-frequency work, and the other sub-antenna structure supports single-frequency work. The antenna system realizes multi-band signal communication through the antenna which is formed by construction and comprises the two sub-antenna structures, saves the layout area of the antenna, reduces the design cost of the antenna, and is beneficial to realizing the lightness and thinness of the body of the mobile terminal.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the claims of the present invention, and it is obvious for those skilled in the art that other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an antenna system according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second antenna system according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third antenna system according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a fourth structure of the antenna system according to the embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a fifth antenna system according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a sixth antenna system according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a seventh structure of an antenna system according to an embodiment of the present invention.
Fig. 8 is an eighth structural diagram of an antenna system according to an embodiment of the present invention.
Icon: 100-an antenna system; 110-a first metal bezel; 120-a second metal bezel; 130-metal floor; 140-a radio frequency signal source; 150-connecting rib position; 160-matching network; 111-a first slit; 121-a second gap; 170-slot; 180-a first antenna switch; 190-second antenna switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
How to provide an antenna system which can realize multi-band signal communication through one antenna, save the layout area of the antenna, reduce the design cost of the antenna and be beneficial to realizing the lightness and thinness of a mobile terminal body is a technical problem which needs to be solved urgently for technical personnel in the field.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The first embodiment:
fig. 1 is a schematic diagram of a first structure of an antenna system 100 according to an embodiment of the present invention. In the embodiment of the present invention, the antenna system 100 can provide one antenna for the mobile terminal to implement multi-band signal communication, save the antenna layout area in the mobile terminal, reduce the antenna design cost of the mobile terminal, and facilitate the implementation of the light and thin characteristics of the body of the mobile terminal. The antenna system 100 includes a metal floor 130, a first metal frame 110, a second metal frame 120, a matching network 160, a connecting rib 150, and a radio frequency signal source 140.
In this embodiment, the first metal frame 110 and the metal floor 130 are separated from each other, the connecting rib position 150 is disposed between the first metal frame 110 and the metal floor 130 and is respectively connected to the first metal frame 110 and the metal floor 130, so that the first metal frame 110 is connected to the metal floor 130 through the connecting rib position 150, and a first gap 111 is formed between the first metal frame 110 and the metal floor 130 based on the separation distance between the first metal frame 110 and the metal floor 130 and the connecting rib position 150.
In this embodiment, one end of the second metal frame 120 is connected to the metal floor 130, and the second metal frame 120 extends in a direction parallel to the side of the metal floor 130, and a second gap 121 is formed between the second metal frame 120 and the metal floor 130.
Optionally, the metal floor 130 has a notch at a position close to the first slit 111, the notch is composed of two side walls perpendicular to each other, wherein an extending direction of one side wall is parallel to a length extending direction of the metal floor 130, and the side wall is used as a side edge of the metal floor 130, and an extending direction of the other side wall is perpendicular to an extending direction of the previous side wall, wherein the length extending direction of the metal floor 130 is parallel to a direction indicated by an arrow in fig. 1. One end of the second metal frame 120 is fixedly connected to a side wall whose extending direction is perpendicular to the length extending direction of the metal floor 130, and the extending direction corresponding to the second metal frame 120 is parallel to the other side wall, i.e. the side edge of the metal floor 130, so that the second metal frame 120 cooperates with the two side walls to form a second gap 121 between the second metal frame 120 and the metal floor 130.
In this embodiment, a port of one end of the first metal frame 110, which is close to the first gap 111, is opposite to a port of the other end of the second metal frame 120, which is not directly connected to the metal floor 130, that is, a port of an end of the first metal frame 110, which is close to the first gap 111, is opposite to a port of an end of the second metal frame 120, which is far from the metal floor 130. A slot 170 for realizing coupling excitation is disposed between two corresponding opposite ports of the first metal frame 110 and the second metal frame 120, so that the slot 170 is communicated with the first slot 111 and the second slot 121.
In this embodiment, the gap width range of the slot 170 in the direction parallel to the length extending direction of the metal floor 130 is 0.5mm to 1.0mm, and the specific gap width value can be set differently according to the design requirement.
In this embodiment, the rf signal source 140 is configured to transmit an rf signal, and the matching network 160 is configured to provide a matched impedance to the rf signal source 140 to ensure that loss and distortion of the rf signal source 140 during rf signal transmission are minimum, where the matching network 160 matches with electrical characteristics of the rf signal source 140. The rf signal source 140 is electrically connected to the matching network 160, and is electrically connected to the first metal frame 110 or the second metal frame 120 through the matching network 160, so as to form a multiband antenna including two sub-antenna structures and used for communicating signals of different frequency bands by combining the first metal frame 110, the second metal frame 120, the first gap 111, the second gap 121, the slot 170, and the metal floor 130.
Among the two sub-antenna structures included in the multiband antenna, a first sub-antenna structure includes the first metal frame 110, the first slot 111, the slot 170 and the metal floor 130, a second sub-antenna structure includes the second metal frame 120, the second slot 121, the slot 170 and the metal floor 130, and the sub-antenna structures connected via the matching network 160 and the rf signal source 140 in the two sub-antenna structures support dual-frequency operation, while the other sub-antenna structure supports single-frequency operation.
In this embodiment, in the sub-antenna structure connected to the rf signal source 140 through the matching network 160, when the rf signal corresponding to the rf signal source 140 performs signal transmission through the metal floor 130, the connecting rib position 150, the whole metal frame corresponding to the sub-antenna structure, the corresponding matching gap and the slot 170, the metal floor 130, the connecting rib position 150, the whole metal frame corresponding to the sub-antenna structure, the corresponding matching gap and the slot 170 are matched with each other to obtain the first resonant frequency f capable of supporting a frequency band signal1. In the sub-antenna structure connected to the rf signal source 140 via the matching network 160, the rf signal corresponding to the rf signal source 140 can also pass through the matching networkThe matching network 160 performs signal transmission from the feeding position connected to the matching network 160 on the corresponding metal frame toward the slot 170 through the corresponding matching slot and slot 170, and at this time, the matching network 160 and the part of the metal frame from the feeding position connected to the matching network 160 to the position close to the slot 170, the corresponding matching slot and slot 170 are matched with each other to obtain a second resonant frequency f capable of supporting another frequency band signal2。
In this embodiment, in the sub-antenna structure that is not connected to the rf signal source 140 through the matching network 160, after the metal frame corresponding to the sub-antenna structure obtains coupling excitation from the metal frame connected to the matching network 160 through the slot 170, the rf signal transmitted by the rf signal source 140 is transmitted based on the metal frame subjected to coupling excitation, the metal floor 130, the corresponding matching slot and the slot 170, and at this time, the metal frame subjected to coupling excitation, the metal floor 130, the corresponding matching slot and the slot 170 cooperate with each other to obtain a third resonant frequency f that can support a third frequency band signal3。
In this embodiment, the antenna system 100 communicates with signals of different frequency bands through three resonant frequencies obtained under the action of the rf signal source 140, and accordingly, the antenna layout area is saved, the antenna design cost is reduced, and the implementation of lightness and thinness of the mobile terminal body is facilitated. The two resonant frequencies corresponding to the sub-antenna structure supporting dual-frequency operation have very small correlation with the resonant frequency corresponding to the sub-antenna structure supporting single-frequency operation due to the slot 170, that is, the first resonant frequency f1And the second resonance frequency f2Each with said third resonance frequency f3The first resonant frequency f is not strongly correlated1And the second resonance frequency f2When the frequency band range corresponding to the self-frequency band range is adjusted, the resonant frequency f is not adjusted3The frequency range in charge has a large influence.
Referring to fig. 1 again, in the present embodiment, when the rf signal source 140 is electrically connected to the first metal frame 110 through the matching network 160, the feeding position on the first metal frame 110 electrically connected to the matching network 160 is located on the first metal frame 110 near the slot 170.
At this time, the first resonant frequency f corresponding to the antenna system 1001The resonant frequency f is obtained by the mutual cooperation of the metal floor 130, the first metal frame 110, the first gap 111 and the slot 1701The corresponding wavelength is four times the working length of the first slot 111, wherein the working length of the first slot 111 is the distance between the position corresponding to the connecting rib position 150 and the corresponding position at the outermost opening of the slot 170 on the plane perpendicular to the length extending direction of the metal floor 130 of the first metal frame 110.
Second resonant frequency f corresponding to the antenna system 1002The matching network 160, a part of the first metal frame 110 from the feeding position connected to the matching network 160 to the position close to the slot 170, the first slot 111 and the slot 170 cooperate with each other.
A third resonant frequency f corresponding to the antenna system 1003The second metal frame 120, the metal floor 130, the second gap 121 and the slot 170 cooperate with each other, and the second metal frame 120 is excited by coupling from the first metal frame 110, and the resonant frequency f is obtained3The corresponding wavelength is four times the working length of the second gap 121, wherein the working length of the second gap 121 is the distance between the second metal frame 120 and the end port of the second metal frame 120 near the slot 170 from the bottom position of the second metal frame 120 connecting the metal floor 130 on the plane parallel to the length extension direction of the metal floor 130.
In the antenna system 100 shown in fig. 1, the matching network 160 is electrically connected to the first metal frame 110 by a direct connection feeding method. Specifically, the matching network 160 is directly connected to the first metal frame 110 at a feeding position close to the slot 170 through a wire, so as to realize the connection between the rf signal source 140 and the first metal frame 110 through the matching network 160.
Second embodiment:
fig. 2 is a schematic diagram of a second structure of the antenna system 100 according to the embodiment of the present invention. In the embodiment of the present invention, the antenna system 100 shown in fig. 2 is similar to the antenna system 100 shown in fig. 1 in terms of shape, structure, operation principle and technical effect, except that the antenna system 100 shown in fig. 2 adopts a coupling feeding manner for the feeding manner of the matching network 160 with respect to the first metal frame 110.
Optionally, in this embodiment, the antenna system 100 may set a coupling branch in the first slot 111 near the corresponding feeding position on the first metal frame 110, and the matching network 160 connects the coupling branch, so that the rf signal source 140 forms coupling excitation with the first metal frame 110 based on the coupling branch connected by the matching network 160, and the first metal frame 110 is ensured to be electrically connected with the rf signal source 140 under the action of the coupling excitation.
The third embodiment:
fig. 3 is a schematic structural diagram of an antenna system 100 according to a third embodiment of the present invention. In the embodiment of the present invention, the antenna system 100 shown in fig. 3 is similar to the antenna system 100 shown in fig. 1 in terms of shape configuration, operation principle and technical effect, except that the antenna system 100 shown in fig. 3 may further include a first antenna switch 180.
In this embodiment, one end of the first antenna switch 180 is connected to the first metal frame 110, and the other end of the first antenna switch 180 is connected to the metal floor 130, so as to tune a resonant frequency corresponding to a first antenna substructure including the first metal frame 110. The first antenna switch 180 may correspond to the first resonant frequency f of the first metal bezel 1101And the second resonance frequency f2Tuning the first antenna structure of the first metal bezel 110 to enable the first antenna structureThe frequency band signal corresponding to each frequency band antenna including a GPS antenna, a WIFI antenna, a cellular antenna, a MIMO antenna and the like can be covered.
In this embodiment, a position on the first metal frame 110 connected to the first antenna switch 180 is located between a feeding position on the first metal frame 110 and a position where the connecting rib position 150 is correspondingly connected.
The fourth embodiment:
fig. 4 is a schematic diagram illustrating a fourth structure of the antenna system 100 according to the embodiment of the present invention. In the embodiment of the present invention, the antenna system 100 shown in fig. 4 is similar to the antenna system 100 shown in fig. 3 in terms of shape structure, operation principle and obtained technical effect, except that the feeding manner of the matching network 160 for the first metal frame 110 in the antenna system 100 shown in fig. 4 is the coupling feeding manner in the antenna system 100 shown in fig. 2, and the feeding manner adopted in the antenna system 100 shown in fig. 3 is the direct connection feeding manner in the antenna system 100 shown in fig. 1.
Fifth embodiment:
fig. 5 is a schematic diagram of a fifth structure of the antenna system 100 according to the embodiment of the present invention. In the embodiment of the present invention, the antenna system 100 shown in fig. 5 is similar to the antenna system 100 shown in fig. 1 in terms of shape, structure, operation principle and obtained technical effect, except that the rf signal source 140 is electrically connected to the second metal frame 120 through the matching network 160 in the antenna system 100 shown in fig. 5.
In this embodiment, when the rf signal source 140 is electrically connected to the second metal frame 120 through the matching network 160, the feeding position of the second metal frame 120 electrically connected to the matching network 160 is located on the second metal frame 120 near the slot 170.
At this time, the first resonant frequency f corresponding to the antenna system 1001The resonant frequency f is obtained by the mutual cooperation of the metal floor 130, the second metal frame 120, the second gap 121 and the slot 1701Corresponding wavelength to said second gap 121 four times the working length.
Second resonant frequency f corresponding to the antenna system 1002The matching network 160, a part of the second metal frame 120 from the feeding position connected with the matching network 160 to the position close to the slot 170, the second slot 121 and the slot 170 cooperate with each other.
A third resonant frequency f corresponding to the antenna system 1003The first metal frame 110, the metal floor 130, the first gap 111 and the slot 170 cooperate with each other, and the first metal frame 110 is excited by coupling from the second metal frame 120, and the resonant frequency f is obtained3The corresponding wavelength is four times the working length of the first slot 111.
In the antenna system 100 shown in fig. 5, the matching network 160 is electrically connected to the second metal frame 120 by a direct connection feeding method. Specifically, the matching network 160 is directly connected to the second metal frame 120 at a feeding position close to the slot 170 through a wire, so as to realize the connection between the rf signal source 140 and the second metal frame 120 through the matching network 160.
Sixth embodiment:
fig. 6 is a schematic diagram illustrating a sixth structure of the antenna system 100 according to the embodiment of the present invention. In the embodiment of the present invention, the antenna system 100 shown in fig. 6 is similar to the antenna system 100 shown in fig. 5 in terms of shape, structure, operation principle and obtained technical effect, except that the antenna system 100 shown in fig. 6 adopts a coupling feeding manner for the feeding manner of the matching network 160 with respect to the second metal bezel 120.
Optionally, in this embodiment, the antenna system 100 may set a coupling branch in the second slot 121 near a corresponding feeding position on the second metal frame 120, and the matching network 160 connects the coupling branch, so that the rf signal source 140 forms coupling excitation based on the coupling branch connected by the matching network 160 and the second metal frame 120, and the second metal frame 120 is ensured to be electrically connected to the rf signal source 140 under the action of the coupling excitation.
Seventh embodiment:
fig. 7 is a schematic diagram illustrating a seventh structure of the antenna system 100 according to the embodiment of the present invention. In the embodiment of the present invention, the antenna system 100 shown in fig. 7 is similar to the antenna system 100 shown in fig. 5 in terms of shape construction, operation principle and technical effect, except that the antenna system 100 shown in fig. 7 may further include a second antenna switch 190.
In this embodiment, one end of the second antenna switch 190 is connected to the second metal frame 120, and the other end of the second antenna switch 190 is connected to the metal floor 130, so as to tune a resonant frequency corresponding to a second antenna substructure including the second metal frame 120. The second antenna switch 190 can correspondingly cover the first resonant frequency f of the second metal frame 1201And the second resonance frequency f2Tuning is performed, so that the second antenna structure corresponding to the second metal frame 120 can cover frequency band signals corresponding to frequency band antennas including a GPS antenna, a WIFI antenna, a cellular antenna, and a MIMO antenna.
In this embodiment, a position on the second metal frame 120 connected to the second antenna switch 190 is located between the feeding position on the second metal frame 120 and the slot bottom position of the second slot 121.
Eighth embodiment:
fig. 8 is a schematic diagram illustrating an eighth structure of the antenna system 100 according to the embodiment of the present invention. In the embodiment of the present invention, the antenna system 100 shown in fig. 8 is similar to the antenna system 100 shown in fig. 7 in terms of shape, structure, operation principle and obtained technical effect, except that the feeding manner of the matching network 160 for the second metal frame 120 in the antenna system 100 shown in fig. 8 is the coupling feeding manner in the antenna system 100 shown in fig. 6, and the feeding manner adopted in the antenna system 100 shown in fig. 7 is the direct connection feeding manner in the antenna system 100 shown in fig. 5.
In the present invention, an embodiment of the present invention further provides a mobile terminal, where the mobile terminal includes any one of the antenna systems 100 shown in fig. 1 to 8, and the mobile terminal implements multi-band signal communication through the antenna system 100, so as to save an antenna layout area on the mobile terminal, reduce an antenna design cost of the mobile terminal, and facilitate implementation of a light and thin characteristic of a body of the mobile terminal. The Mobile terminal may be, but is not limited to, a smart phone, a Personal Computer (PC), a tablet PC, a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), and the like. In an implementation manner of this embodiment, the mobile terminal is a smart phone.
In summary, in the antenna system and the mobile terminal provided in the embodiments of the present invention, the antenna system can implement multi-band signal communication through one antenna, thereby saving the antenna layout area, reducing the antenna design cost, and facilitating the implementation of the body of the mobile terminal to be light and thin. A first metal frame in the antenna system is connected with a metal floor through a connecting rib position, and a first gap is formed between the first metal frame and the metal floor. One end of a second metal frame in the antenna system is connected with the metal floor, the second metal frame extends along the direction parallel to the side edge of the metal floor, and a second gap is formed between the second metal frame and the metal floor. One end of the first metal frame, which is close to the first gap, is opposite to the port of the other end of the second metal frame, and a slot gap for realizing coupling excitation is arranged between the ports of the first metal frame and the second metal frame, which are opposite to each other. The radio frequency signal source is electrically connected with the first metal frame or the second metal frame through a matching network, so that a multi-band antenna comprising two sub-antenna structures is formed under the action of the radio frequency signal source.
One of the two sub-antenna structures comprises the first metal frame, the first gap, the slot and the metal floor, the other sub-antenna structure comprises the second metal frame, the second gap, the slot and the metal floor, the sub-antenna structure connected with the radio frequency signal source in the two sub-antenna structures supports double-frequency operation, and the other sub-antenna structure supports single-frequency operation. The antenna system realizes multi-band signal communication through the antenna which is formed by construction and comprises the two sub-antenna structures, saves the layout area of the antenna, reduces the design cost of the antenna, and is beneficial to realizing the lightness and thinness of the body of the mobile terminal.
The metal floor, the whole metal frame, the correspondingly matched gap and the slot in the sub-antenna structure connected with the radio frequency signal source are matched with each other to obtain the resonant frequency supporting one frequency band signal, and the matching network and the metal frame are matched with each other to obtain the resonant frequency supporting the other frequency band signal from the position connected with the radio frequency signal source to the part close to the slot, the correspondingly matched gap and the slot.
And after the metal frame in the other sub-antenna structure obtains coupling excitation from the sub-antenna structure connected with the radio frequency signal source, the resonant frequency supporting the third frequency band signal is obtained based on the mutual matching of the metal frame, the metal floor, the correspondingly matched gap and the slot in the sub-antenna structure.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An antenna system is characterized by comprising a metal floor, a first metal frame, a second metal frame, a matching network, a connecting rib position and a radio frequency signal source;
the first metal frame is connected with the metal floor through the connecting rib position, and a first gap is formed between the first metal frame and the metal floor, wherein the first gap is formed by matching the corresponding separation distance between the first metal frame and the metal floor with the connecting rib position;
one end of the second metal frame is connected with the metal floor, the second metal frame extends along the direction parallel to the side edge of the metal floor, and a second gap is formed between the second metal frame and the metal floor;
one end, close to the first gap, of the first metal frame is opposite to the port of the other end of the second metal frame, and a slot gap for realizing coupling excitation is arranged between the ports, opposite to the first metal frame and the second metal frame;
the radio frequency signal source is electrically connected with the first metal frame or the second metal frame through a matching network to form a multi-band antenna, wherein the metal frame which is not connected with the radio frequency signal source through the matching network obtains coupling excitation from the metal frame connected with the matching network through the slot to carry out signal transmission.
2. The antenna system of claim 1,
the radio frequency signal source is electrically connected with the first metal frame through the matching network, and a feeding position, electrically connected with the matching network, on the first metal frame is located at a position, close to the slot, on the first metal frame.
3. The antenna system of claim 2,
the feeding mode corresponding to the electrical connection between the matching network and the first metal frame comprises one of a direct connection feeding mode or a coupling feeding mode.
4. The antenna system of claim 3, further comprising a first antenna switch;
one end of the first antenna switch is connected with the first metal frame, and the other end of the first antenna switch is connected with the metal floor and used for tuning the resonant frequency of the antenna comprising the first metal frame.
5. The antenna system of claim 4,
the position where the first metal frame is connected with the first antenna switch is located between the feeding position on the first metal frame and the corresponding position of the connecting rib position.
6. The antenna system of claim 1,
the radio frequency signal source is electrically connected with the second metal frame through the matching network, and a feeding position, electrically connected with the matching network, on the second metal frame is located at a position, close to the slot, on the second metal frame.
7. The antenna system of claim 6,
the feeding mode corresponding to the electrical connection between the matching network and the second metal frame comprises one of a direct connection feeding mode or a coupling feeding mode.
8. The antenna system of claim 7, further comprising a second antenna switch;
one end of the second antenna switch is electrically connected with the second metal frame, the other end of the second antenna switch is connected with the metal floor and used for tuning the resonant frequency of the antenna comprising the second metal frame, and the position where the second metal frame is connected with the second antenna switch is located between the feeding position on the second metal frame and the seam bottom position of the second gap.
9. The antenna system of any of claims 1-8, wherein the slot corresponds to a gap width in a range of 0.5mm to 1.0 mm.
10. A mobile terminal, characterized in that it comprises an antenna system according to any of claims 1-9.
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| CN109509962B (en) * | 2018-11-19 | 2023-10-20 | 惠州硕贝德无线科技股份有限公司 | Dual-frequency MIMO antenna structure for 5G mobile phone terminal |
| CN109449575B (en) * | 2018-11-30 | 2021-03-16 | 维沃移动通信有限公司 | Antenna structure and terminal equipment |
| EP3883061A4 (en) * | 2018-12-27 | 2021-12-01 | Huawei Technologies Co., Ltd. | Antenna device and terminal |
| WO2021000183A1 (en) * | 2019-06-30 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Antenna module and mobile terminal |
| CN110459859A (en) * | 2019-07-05 | 2019-11-15 | Oppo（重庆）智能科技有限公司 | Combined antenna component and electronic device |
| CN112310610A (en) * | 2019-08-02 | 2021-02-02 | 青岛海信移动通信技术股份有限公司 | Mobile terminal |
| CN110380197A (en) * | 2019-08-08 | 2019-10-25 | 维沃移动通信有限公司 | A kind of antenna modules and electronic equipment |
| CN114447583B (en) * | 2019-08-23 | 2023-09-01 | 华为技术有限公司 | Antenna and electronic equipment |
| CN111224220B (en) * | 2020-01-10 | 2022-06-24 | 维沃移动通信有限公司 | Electronic device |
| CN113745809B (en) * | 2020-05-27 | 2023-08-22 | 华为技术有限公司 | Electronic equipment |
| CN112003004B (en) * | 2020-09-07 | 2023-04-28 | 抖音视界有限公司 | Slot antenna device and electronic apparatus |
| CN113471678B (en) * | 2021-06-11 | 2022-07-22 | 荣耀终端有限公司 | Terminal antenna and electronic equipment |
| CN114976631B (en) * | 2021-06-25 | 2023-11-14 | 荣耀终端有限公司 | Terminal antenna and electronic equipment |
| CN114696076A (en) * | 2022-04-08 | 2022-07-01 | 深圳市博安通科技股份有限公司 | Multi-band antenna double-switch structure of metal frame mobile phone and method thereof |
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| CN103457024B (en) * | 2013-09-05 | 2015-11-18 | 青岛海信移动通信技术股份有限公司 | A kind of antenna assembly of mobile terminal and mobile terminal |
| CN103811864B (en) * | 2014-01-25 | 2016-08-17 | 惠州硕贝德无线科技股份有限公司 | A kind of metal edge frame double-frequency coupling antennae |
| CN203895602U (en) * | 2014-06-05 | 2014-10-22 | 上海安费诺永亿通讯电子有限公司 | Novel loop antenna device |
| EP3157098A4 (en) * | 2014-07-31 | 2017-06-28 | Huawei Technologies Co., Ltd. | Mobile terminal |
| KR101827275B1 (en) * | 2015-11-27 | 2018-02-08 | 엘지전자 주식회사 | Mobile terminal |
| CN106935959B (en) * | 2015-12-29 | 2020-01-07 | 小米科技有限责任公司 | Antenna assembly and electronic equipment |
| CN205543232U (en) * | 2016-01-27 | 2016-08-31 | 杭州禾声科技有限公司 | Multiple band antenna based on metal frame |
| CN107204511B (en) * | 2016-03-16 | 2019-02-12 | 北京小米移动软件有限公司 | A kind of diversity antenna |
| CN105742812B (en) * | 2016-03-23 | 2019-05-10 | 深圳市万普拉斯科技有限公司 | Mobile terminal and its antenna structure |
| CN106876891A (en) * | 2016-12-29 | 2017-06-20 | 努比亚技术有限公司 | A kind of antenna, mobile terminal and its control method |
| CN108039564B (en) * | 2018-01-16 | 2020-02-14 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN108039563B (en) * | 2018-01-16 | 2020-02-14 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
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