CN108336509B

CN108336509B - Antenna assembly, electronic equipment and antenna control method

Info

Publication number: CN108336509B
Application number: CN201810124982.3A
Authority: CN
Inventors: 刘国林; 向元彬
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-02-07
Filing date: 2018-02-07
Publication date: 2021-02-19
Anticipated expiration: 2038-02-07
Also published as: CN108336509A

Abstract

The embodiment of the application provides an antenna assembly, electronic equipment and an antenna control method, wherein the antenna assembly comprises a first antenna structure and a second antenna structure, wherein the first antenna structure and/or the second antenna structure is/are provided with a matching circuit, and the matching circuit comprises a variable capacitor; and the capacitance value of the variable capacitor is switched according to the current working resonant frequency of the first antenna structure and/or the second antenna structure, so that the resonant frequency of the first antenna structure is different from that of the second antenna structure. The variable capacitor is used for adjusting the resonant frequency of the antenna, so that the resonant frequencies among the multiple antennas are different, interference among the multiple antennas is reduced, and the radiation quality of the antenna is improved.

Description

Antenna assembly, electronic equipment and antenna control method

Technical Field

The present disclosure relates to electronic devices, and particularly to an antenna assembly, an electronic device, and an antenna control method.

Background

With the development of network technology and the improvement of the intelligent degree of electronic equipment, users can realize more and more functions such as conversation, chatting, game playing and the like through the electronic equipment.

The user realizes signal transmission through the antenna of the electronic equipment in the conversation and chat processes of the electronic equipment. When the antennas are used for transmitting signals by multiple antennas, mutual interference is easily caused among the multiple antennas.

Disclosure of Invention

The embodiment of the application provides an antenna assembly, electronic equipment and an antenna control method, which can reduce interference among multiple antennas of the electronic equipment.

The embodiment of the application provides an antenna module, including first antenna structure and second antenna structure, wherein:

the first antenna structure and/or the second antenna structure are/is provided with a matching circuit, and the matching circuit comprises a variable capacitor;

and the capacitance value of the variable capacitor is switched according to the current working resonant frequency of the first antenna structure and/or the second antenna structure, so that the resonant frequency of the first antenna structure is different from that of the second antenna structure.

An embodiment of the present application further provides an electronic device, where the electronic device includes an antenna assembly and a processor, where:

the antenna assembly comprises a first antenna structure and a second antenna structure, wherein the first antenna structure and/or the second antenna structure is/are provided with a matching circuit, and the matching circuit comprises a variable capacitor;

and the processor controls the switching of the capacitance value of the variable capacitor according to the current working resonant frequency of the first antenna structure and/or the second antenna structure, so that the working resonant frequency of the first antenna structure is different from that of the second antenna structure.

The embodiment of the application further provides an antenna control method, which is applied to electronic equipment, wherein the electronic equipment comprises an antenna assembly and a processor, and the antenna control method comprises the following steps:

the method is executed on the processor and comprises the following steps:

when the first antenna structure and the second antenna structure are both in work, determining the current working resonant frequency of the first antenna structure and the second antenna structure;

and switching the variable capacitor to a preset capacitance value corresponding to the working resonant frequency according to the working resonant frequency, so that the resonant frequency between the first antenna structure and the second antenna structure is different.

The antenna assembly provided by the embodiment of the application comprises a first antenna structure and a second antenna structure, wherein the first antenna structure and/or the second antenna structure is/are provided with a matching circuit, and the matching circuit comprises a variable capacitor; and the capacitance value of the variable capacitor is switched according to the current working resonant frequency of the first antenna structure and/or the second antenna structure, so that the resonant frequency of the first antenna structure is different from that of the second antenna structure. The variable capacitor is used for adjusting the resonant frequency of the antenna, so that the resonant frequencies among the multiple antennas are different, interference among the multiple antennas is reduced, and the radiation quality of the antenna is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 2 is a first structural schematic diagram of an electronic device according to an embodiment of the present application.

Fig. 3 is a second schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 4 is a third structural schematic diagram of an electronic device according to an embodiment of the present application.

Fig. 5 is a fourth schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of an antenna assembly provided in an embodiment of the present application.

Fig. 7 is another schematic structural diagram of an antenna assembly provided in an embodiment of the present application.

Fig. 8 is a schematic view of another structure of an antenna assembly according to an embodiment of the present application.

Fig. 9 is a schematic view of another structure of an antenna assembly according to an embodiment of the present application.

Fig. 10 is a fifth structural schematic diagram of an electronic device according to an embodiment of the present application.

Fig. 11 is a flowchart illustrating an antenna control method according to an embodiment of the present application.

Fig. 12 is a sixth schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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 application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the application provides an antenna assembly, electronic equipment and an antenna control method. The details will be described below separately. The antenna assembly can be arranged in the electronic device, and the electronic device can be a smart phone, a tablet computer and the like.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, and fig. 2 is another schematic structural diagram of the electronic device according to the embodiment of the present disclosure. The electronic device 10 may include a cover plate 11, a display 12, a circuit board 13, a battery 14, a housing 15, a camera, and a fingerprint unlocking module. It should be noted that the electronic device 10 shown in fig. 1 and 2 is not limited to the above, and may include other devices, or include no camera, or include no fingerprint unlocking module.

Wherein the cover plate 11 is mounted to the display screen 12 to cover the display screen 12. The cover 1 may be a transparent glass cover so that the display screen transmits light through the cover 11 to display. In some embodiments, the cover plate 11 may be a glass cover plate made of a material such as sapphire.

The housing 15 may include a middle frame 151 and a rear cover 152, the middle frame 151 and the rear cover 152 may be combined with each other to form the housing 15, and the middle frame 151 and the rear cover 152 may form a receiving space to receive the printed circuit board 13, the display 12, the battery 14, and the like. Further, a cover plate 11 may be fixed to the housing 15, and the cover plate 11 and the housing 15 form a closed space to accommodate the printed circuit board 13, the display 12, the battery 14, and the like. In some embodiments, the cover plate 11 is disposed on the middle frame 151, the rear cover 152 is disposed on the middle frame 151, the cover plate 11 and the rear cover 152 are disposed on opposite sides of the middle frame 151, and the cover plate 11 and the rear cover 152 are disposed opposite to each other.

In some embodiments, the housing 15 may be a metal housing, such as a metal such as magnesium alloy, stainless steel, and the like. It should be noted that the material of the housing 15 in the embodiment of the present application is not limited to this, and other manners may also be adopted, such as: the housing 15 may be a plastic housing. Also for example: the housing 15 is a ceramic housing. For another example: the housing 15 may include a plastic part and a metal part, and the housing 15 may be a housing structure in which metal and plastic are matched with each other, specifically, the metal part may be formed first, for example, a magnesium alloy substrate is formed by injection molding, and then plastic is injected on the magnesium alloy substrate to form a plastic substrate, so as to form a complete housing structure.

It should be noted that, the structure of the housing in the embodiment of the present application is not limited to this, for example: the rear cover and the middle frame are integrally formed to form a completed housing 15 structure, which directly has a receiving space for receiving the printed circuit board 13, the display 12, the battery 14, and the like.

The printed circuit board 13 is mounted in the housing 15, the printed circuit board 13 may be a motherboard of the electronic device 10, and one, two or more functional components of a motor, a microphone, a speaker, an earphone interface, a universal serial bus interface, a camera, a distance sensor, an ambient light sensor, a receiver, a processor, and the like may be integrated on the printed circuit board 13.

In some embodiments, the printed circuit board 13 may be secured within the housing 15. Specifically, the printed circuit board 13 may be screwed to the middle frame 151 by screws, or may be snap-fitted to the middle frame 151. It should be noted that the way that the printed circuit board 13 is specifically fixed to the middle frame 151 in the embodiment of the present application is not limited to this, and other ways, such as a way of fixing by a snap and a screw together, may also be used.

Wherein the battery 14 is mounted in the housing 15, the battery 14 being electrically connected to the printed circuit board 13 for providing power to the electronic device 10. The housing 15 may serve as a battery cover for the battery 14. The case 15 covers the battery 14 to protect the battery 14, and particularly, the rear cover covers the battery 14 to protect the battery 14, reducing damage to the battery 14 due to collision, dropping, and the like of the electronic apparatus 10.

Wherein the display 12 is mounted in the housing 15, and the display 12 is electrically connected to the printed circuit board 13 to form a display surface of the electronic device 10. The display screen 12 may include a display area and a non-display area. The display area may be used to display a screen of the electronic device 10 or provide a user with touch control. The top area of the non-display area is provided with an opening for conducting sound and light, and the bottom of the non-display area can be provided with functional components such as a fingerprint module, a touch key and the like. The cover plate 11 is mounted on the display 12 to cover the display 12, and may form the same display area and non-display area as the display 12 or different display areas and non-display areas.

Note that the structure of the display screen 12 is not limited to this. For example, the display 12 may be a special-shaped display, specifically, please refer to fig. 3, and fig. 3 is another schematic structural diagram of the electronic device according to the embodiment of the present application. The electronic device in fig. 3 differs from the electronic device in fig. 1 in that: the electronic device 20 includes a display 22, a cover 21, a printed circuit board 23, a battery 24, and a housing 25. Wherein the display screen 22 has a light permeable area 28 formed directly thereon. Specifically, for example: the display screen 22 is provided with a through hole penetrating the display screen 22 in the thickness direction, and the light-permeable area 28 may include the through hole, and the through hole may be provided with functional components such as a front camera, an earphone, a sensor, and the like. For another example: the display screen 22 is provided with non-display areas, which the light permeable areas 28 may comprise. Wherein the cover plate 21 is adapted to the structural arrangement of the display screen 22. It should be noted that, the housing 25 may refer to the housing 15, the printed circuit board 23 may refer to the printed circuit board 13, and the battery 24 may refer to the battery 14, which are not described in detail herein.

Referring to fig. 4, fig. 4 is a schematic structural diagram of another electronic device according to an embodiment of the present disclosure, where the electronic device in fig. 4 is different from the electronic device in fig. 1 in that: the electronic device 30 in fig. 4 includes a display screen 32, a cover plate 31, a printed circuit board 33, a battery 34, and a housing 35. The display screen 32 is provided with a notch 121 at its periphery, and the notch 121 can be used for placing functional components such as a front camera, an earphone, a sensor, and the like. The cover plate 31 is suitable for the structure of the display screen 11, the cover plate 31 may be provided with a large notch such as the notch 121, and the cover plate 31 may cover the notch 121. It should be noted that, the housing 3 may refer to the housing 15, the printed circuit board 33 may refer to the printed circuit board 13, and the battery 34 may refer to the battery 14, which are not described in detail herein.

It should be noted that, in some embodiments, the display 12 may not include the non-display area, but may be configured as a full-screen structure, and the functional components such as the distance sensor and the ambient light sensor may be disposed below the display or at other positions. Specifically, please refer to fig. 5, and fig. 5 is another schematic structural diagram of the electronic device according to the embodiment of the present application. The electronic device 40 includes a display 42, a cover 41, a printed circuit board 43, a battery 44, and a housing 45. Wherein the display screen 42 is overlaid on the housing 45 without a non-display area. Wherein, the cover plate 41 is suitable for the size setting of the display screen 42. It should be noted that, the housing 45 may refer to the housing 15, the printed circuit board 43 may refer to the printed circuit board 13, and the battery 44 may refer to the battery 14, which are not described herein again.

In some embodiments, the Display 12 may be a Liquid Crystal Display (LCD) or Organic Light-Emitting Diode (OLED) type Display. In some embodiments, when the display 12 is a liquid crystal display, the electronic device 10 may further include a backlight module, not shown, which can be referred to as a backlight module in the prior art.

In some embodiments, the electronic device 10 may also include an antenna structure for transceiving signals. The antenna structure may be mounted to the housing 15, such as to the bezel 151. The antenna structure may form a fixed connection structure with the middle frame 151, which is defined as an antenna assembly. The following description will be made in detail by taking an antenna assembly as an example.

Referring to fig. 6, fig. 6 is a schematic structural diagram of an antenna assembly according to an embodiment of the present application. The antenna assembly may include an antenna structure and a carrier.

The carrier 500 may be a housing structure, which may be a plate-shaped structure, or may have a receiving cavity, and the carrier 500 may be a metal material, such as a magnesium alloy material. The carrier 500 may also be co-injection molded of metal and plastic. It should be noted that the carrier 500 may refer to the middle frame, or the carrier 500 may refer to the rear cover 502, or the carrier 500 may refer to a structure formed by integrally forming the middle frame and the rear cover 502, which is not described herein again.

In some embodiments, the carrier 500 may include a metal bezel of an electronic device and a back cover 502. Specifically, the metal middle frame may have openings on the side edges to divide the middle frame into several parts. The metal middle frame may include a first side frame 501 and a second side frame 503. The back cover 502 is connected to a reference ground of the electronic device to achieve grounding.

Wherein an antenna structure, which can transmit and receive signals, can be mounted on the carrier 500. In some embodiments, the number of the antenna structures is at least two, and two antenna structures are taken as an example for illustration. Specifically, the antenna structure may include a first antenna structure 51 and a second antenna structure 52.

Wherein the first antenna structure 51 may be disposed on one side of the carrier 500, and the second antenna structure 52 may be disposed on the other side of the carrier 500 opposite to the first antenna structure 51. In some embodiments, the first antenna structure 51 may serve as a main set antenna, and the first antenna structure 51 may transmit and receive signals, for example, the first antenna structure 51 may transmit and receive at least one of signals of low band (700-. It should be noted that the first antenna structure 51 may also be used for transmitting and receiving other signals. In some embodiments, the first antenna structure 51 may also act as a diversity antenna for receiving signals.

Similarly, in some embodiments, the second antenna structure 52 may also serve as a main set antenna, and the second antenna structure 52 may transmit and receive signals, for example, the second antenna structure 52 may transmit and receive at least one of the low band (700-. It should be noted that the second antenna structure 52 can also be used for transceiving other signals. In some embodiments, the second antenna structure 52 may also act as a diversity antenna for receiving signals.

Specifically, the first antenna structure 51 is disposed at the first side frame 501, and the first side frame 501 and the rear cover 502 of the electronic device form the first antenna structure 51. The second antenna structure 52 is disposed at the second side frame 503, and the second side frame 503 and the back cover 502 of the electronic device form the second antenna structure 52.

In some embodiments, the first antenna structure 51 includes a power feeding module and a ground module. Specifically, the first antenna structure 51 includes a first power feeding module and a first grounding module. The first feeding module and the first grounding module are both connected to the first side frame 501 to feed radio frequency signals into the first side frame 501 and form a signal loop at the first side frame 501, so that the first side frame 501 is used as a radiator in the first antenna structure 51 to radiate signals.

Further, the feeding module includes a first feeding source 521, a first matching circuit 551 and a first contact 541 connected in series in sequence, the first feeding source 521 performs a resonant matching process on the rf signal through the first matching circuit 551, and feeds the rf signal to the first side frame 501 through the first contact 541. The first grounding module includes a first grounding point and a second grounding point, wherein the first grounding point and the second grounding point respectively enable the first side frame 501 to be connected with a reference ground of the electronic device through the second contact 542 and the third contact 543, and a first switch 531 and a second switch 532 are respectively disposed between the first grounding point, the second grounding point and the reference ground, so as to switch the radiation length of the antenna structure through the control of the first switch 531 and the second switch 532, thereby controlling the working resonant frequency of the first antenna structure 51. It should be noted that other matching circuits for resonant matching may be further provided at the first ground point and the second ground point, and relevant figures are not shown in the drawings of the present application.

Still further, the first antenna structure 51 further includes a third grounding point 511 and a fourth grounding point 512, the third grounding point 511 and the fourth grounding point 512 are connected to the rear cover 502 of the electronic device, so as to ground the first antenna structure 51, and the requirement of the multiple working resonant frequency bands of the first antenna structure 51 is realized by grounding at different distances from the first feeding module.

In some embodiments, the second antenna structure 52 includes a feed module and a ground module, as with the first antenna structure 51. In particular, the second antenna structure 52 includes a second feeding module and a second grounding module. The second feeding module and the second grounding module are both connected to the second side frame 503 to feed radio frequency signals into the second side frame 503 and form a signal loop at the second side frame 503, so that the second side frame 503 is used as a radiator in the second antenna structure 52 for signal radiation.

Further, the feeding module includes a second feeding source 522, a third switch 533 and a fourth contact 544 connected in series. Specifically, the second power supply 522 feeds the rf signal to the second side frame 503 through the fourth connection 544, and the third switch 533 is used to connect the second power supply 522 to the second side frame 503 when the second antenna structure 52 is used as a diversity antenna. The second grounding module includes a fifth grounding point and a sixth grounding point 513, the fifth grounding point enables the second side frame 503 to be connected to the reference ground of the electronic device through a fifth connection 545, and the sixth grounding point 513 connects the second side frame 503 to the rear cover 502, so as to enable the second side frame 503 to be grounded.

In some embodiments, the second grounding module further comprises a second matching circuit 552, and the second matching circuit 552 is provided with a variable capacitance. Specifically, the variable capacitor may be switched according to the current operating resonant frequency of the second antenna structure 52, so that the resonant frequency of the second antenna structure 52 is different from the resonant frequency of the first antenna structure 51.

For example, when the operating resonant frequency at which the second antenna structure 52 is currently located belongs to a low-frequency resonant frequency, and the second antenna structure 52 and the first antenna structure 51 work together at the low-frequency resonant frequency, the capacitance value of the variable capacitor is switched to the first capacitance value to change the resonant frequency of the signal radiated by the second antenna structure 52, so that the resonant frequency of the second antenna structure 52 is different from the resonant frequency of the first antenna structure 51.

Specifically, the first capacitance value switched by the variable capacitor may be larger than the default capacitance value when the second antenna structure 52 operates at other frequencies, so that the resonant frequency of the second antenna structure 52 is lower than the operating resonant frequency originally generated by the second feeding source 522. Thereby, the resonance frequency of the second antenna structure 52 can be made different from the resonance frequency of the first antenna structure 51.

Alternatively, the first capacitance value to which the variable capacitor is switched may be smaller than a default capacitance value when the second antenna structure 52 operates at other frequencies, so that the resonant frequency of the second antenna structure 52 is higher than the operating resonant frequency that the second feeding source 522 can originally generate. Thereby, the resonance frequency of the second antenna structure 52 can be made different from the resonance frequency of the first antenna structure 51 as well.

It is understood that the variable capacitor needs to be adjusted to a capacitance value larger or smaller than the default value, and the value of the capacitance value needs to be changed, which may depend on the actual application, and the application is not limited herein.

When the capacitance value in the second matching circuit 552 of the second antenna structure 52 is changed, in addition to changing the resonant frequency of the second antenna structure 52, the phase of the signal radiated by the second antenna structure 52 is also affected, so as to reduce an Envelope Correlation Coefficient (ECC) between the signal radiated by the second antenna structure 52 and the signal radiated by the first antenna structure 51, thereby reducing the signal interference between the second antenna structure 52 and the first antenna structure 51 and improving the signal radiation quality of the antenna.

In some embodiments, changing the value of the variable capacitance may be accomplished by a single adjustable capacitance, which may be a step adjustment capacitor or a linear adjustment capacitor. For example, by connection to a processor in the electronic device, such that the processor can control the adjustable capacitor to adjust the capacitance value, and thus control the change in the resonant frequency of the second antenna structure 52.

In other embodiments, the variable capacitance may be a combined capacitor consisting of one or more capacitors, and the change in capacitance value is achieved by controlling the switching in or out of different capacitors.

Referring to fig. 7, another configuration of an antenna assembly described herein is shown. The antenna assembly also includes a first antenna structure 51 and a second antenna structure 52. In the second antenna structure 52, a second grounding module is connected to the second side frame 503.

Specifically, the second grounding module is provided with a second matching circuit 552, and the second matching circuit 552 includes a matching sub-circuit 552b and a variable capacitor connected in parallel, where the variable capacitor includes a first capacitor 552a and a switch 552 c. Further, the switch 552c is connected in series with the first capacitor 552a to control the connection and disconnection of the first capacitor 552a in the second matching circuit 552 according to the resonant frequency at which the second antenna structure 52 is located.

When the capacitance value of the variable capacitor is switched, the switch 552c is controlled to switch the first capacitor 552a on or off, so that the capacitance value of the variable capacitor in the second matching circuit 552 can be changed. The embodiment has a simple structure, can realize the switching of the capacitance values in the variable capacitor through lower cost, reduces the manufacturing cost of products, and improves enterprise benefits.

Specifically, when the second antenna structure 52 is at the first resonant frequency, the first capacitor 552a is electrically connected to the second matching circuit 552, and the first capacitor 552a is connected in parallel to the matching sub-circuit 552 b. Alternatively, when the second antenna structure 52 is at the second resonant frequency, the first capacitor 552a is electrically disconnected from the second matching circuit 552. It should be noted that, in this embodiment, when the antennas are all operated at the first resonant frequency, mutual interference between the first antenna structure 51 and the second antenna structure 52 is likely to be caused, and when the antennas are all operated at the second resonant frequency, mutual interference between the first antenna structure 51 and the second antenna structure 52 is less likely to be caused relative to the operation at the first resonant frequency.

Therefore, when the first antenna structure 51 and the second antenna structure 52 are at the first resonant frequency, the capacitance value set in the second matching circuit 552 of the second antenna structure 52 is increased due to the connection of the first capacitor 552a, so that the resonant frequency of the second antenna structure 52 is lower than the preset value of the first resonant frequency, and the phase of the resonant frequency is affected, so that the actual resonant frequency of the second antenna structure 52 is lower than the first resonant frequency at which the first antenna structure 51 operates.

When the second antenna structure 52 is at the second resonant frequency, the first antenna structure 51 and the second antenna structure 52 are not likely to interfere with each other, so that the first capacitor 552a can be disconnected without changing the resonant frequency therebetween.

Alternatively, when the second antenna structure 52 is at the first resonant frequency, the first capacitor 552a is placed in an open state with the second matching circuit 552. Alternatively, when the second antenna structure 52 is at the second resonant frequency, the first capacitor 552a is electrically connected to the second matching circuit 552.

It is understood that the manner of controlling the first capacitor 552a may be various, as long as the default capacitance value during normal operation can be changed to make the first antenna and the second antenna operate at different frequencies, which is not limited in the present application.

Through the differentiation of different resonant frequencies, can be according to whether cause mutual interference easily between first antenna structure 51 and the second antenna structure 52, and carry out the pertinence switching to the appearance value of variable capacitance for under the prerequisite that realizes reducing antenna interference, guarantee other resonant frequency's signal radiation efficiency.

In some embodiments, the first resonant frequency may be a low-frequency resonant frequency located in a low frequency band (700-.

The low-frequency resonant frequency easily causes interference among multiple antennas, and the capacitance value of the variable capacitor is changed under the low-frequency resonant frequency, so that the interference can be effectively reduced, and the transmission efficiency of the antennas is improved. On the other hand, at a medium-frequency resonant frequency or a high-frequency resonant frequency with less mutual interference, the resonant frequencies of the first antenna structure 51 and the second antenna structure 52 are kept consistent, so that the signal radiation efficiency of the antenna structures can be ensured.

Therefore, the adjustment of the variable capacitor is realized in a frequency-division mode, the radiation quality of the antenna can be better optimized according to different frequency-band environments, and the intelligent degree of antenna control is improved.

It is to be understood that specific positions, shapes, parameters, such as positions, thicknesses, lengths of the antenna structures, or specific circuit structures in mentioned and unreferenced circuit modules, etc., of the first antenna structure 51, the second antenna structure 52, and other related structures may be set, modified, or replaced according to practical situations in combination with the prior art, and the embodiment of the present application is not limited thereto.

Referring to fig. 8, a further structure of an antenna element according to an embodiment of the present application is shown.

The antenna assembly differs from that shown in fig. 7 in that a third matching circuit 553 is provided to a first ground point of the first antenna structure 51, and the variable capacitor is provided to the third matching circuit 553. Specifically, the variable capacitor is connected in parallel with the matching sub-circuit 553b in the third matching circuit 553, and the variable capacitor includes a second capacitor 553a and a switch 553 c. And at a fifth grounding point of the second antenna structure 52, the second antenna structure 52 is connected to the reference ground of the electronic device through a fifth connection 545.

The other structure of the antenna assembly is the same as or similar to that shown in fig. 7, and the control of the variable capacitance is the same as or similar to that disclosed in the embodiment of fig. 7. Therefore, to avoid redundancy, the description of other structures in fig. 8 can be referred to directly as the description in fig. 7.

The embodiment of the application changes the resonant frequency of the first antenna structure 51, so that the resonant frequency between the first antenna structure 51 and the second antenna structure 52 is different, and the technical effects of reducing interference among multiple antennas and further improving the radiation quality of the antennas can be achieved.

Referring to fig. 9, a further structure of an antenna assembly according to an embodiment of the present application is shown.

Compared with fig. 7, the antenna assembly is different in that a third matching circuit 553 is disposed at a first grounding point of the first antenna structure 51, and a second matching circuit 552 is also disposed at a fifth grounding point of the second antenna structure 52. The variable capacitance is provided in the second matching circuit 552 and the third matching circuit 553.

The other structure of the antenna assembly is the same as or similar to that shown in fig. 7-8, and the variable capacitance is controlled in the same or similar manner as disclosed in the embodiment of fig. 7-8. Therefore, to avoid redundancy, the description of the other structures in fig. 9 can be referred to directly in the descriptions of fig. 7-8.

According to the embodiment of the application, the resonant frequencies of the first antenna structure 51 and the second antenna structure 52 are changed simultaneously or independently, so that the resonant frequencies between the first antenna structure 51 and the second antenna structure 52 are different, the interference among multiple antennas can be reduced, and the technical effect of improving the radiation quality of the antennas is further achieved.

Referring to fig. 10, a fifth structure of an electronic device according to an embodiment of the present application is shown. The electronic device includes an antenna assembly and a processor 560.

The specific implementation manner of the antenna assembly can be the antenna assembly described with reference to fig. 7-9.

The processor 560 is connected to a second matching circuit 552 in the antenna assembly, the second matching circuit 552 includes a variable capacitor, and the processor 560 controls the capacitance value switching of the variable capacitor.

Specifically, in some embodiments, the variable capacitor includes a first capacitor 552a and a switch 552c connected in series. Further, the processor 560 controls the switch to control the connection and disconnection of the first capacitor in the second matching circuit 552 according to the resonant frequency at which the second antenna structure 52 is located.

In some embodiments, the processor 560 is configured to control the switch 552c to be turned on when the second antenna structure 52 is at the first resonant frequency, such that the first capacitor 552a is electrically connected to the second matching circuit 552 and the first capacitor 552a is connected in parallel with the matching sub-circuit 552 b.

In other embodiments, the processor 560 is further configured to control the switch 552c to open when the second antenna structure 52 is at the second resonant frequency, such that the first capacitor 552a is electrically disconnected from the matching circuit.

In some embodiments, the first resonant frequency is a low frequency resonant frequency and the second resonant frequency is a medium frequency resonant frequency or a high frequency resonant frequency.

In some embodiments, the first antenna structure 51 and the second antenna structure 52 each include a feeding module and a grounding module, and the matching circuit is disposed on the grounding module.

It will be appreciated that the antenna structure may be as shown in fig. 8-9 in addition to the antenna structure shown in the electronic device shown in the figures.

The details of the antenna structure can be referred to the descriptions in fig. 7-9, and the details of the present application are not repeated herein.

According to the electronic equipment in the embodiment of the application, the resonance frequency of the antenna is adjusted by using the variable capacitor, so that the resonance frequency among multiple antennas is different, the interference among the multiple antennas is reduced, and the radiation quality of the antenna is improved.

Referring to fig. 11, an antenna control method provided in an embodiment of the present application is shown, where the antenna control method can be used in the electronic devices shown in fig. 1 to 5 and fig. 10.

The electronic equipment comprises an antenna component and a processor, wherein the antenna component comprises a first antenna structure and a second antenna structure, the first antenna structure and/or the second antenna structure is/are provided with a matching circuit, and the matching circuit comprises a variable capacitor;

the processor controls the switching of the capacitance value of the variable capacitor according to the working resonant frequency of the first antenna structure and/or the second antenna structure, so that the resonant frequency of the first antenna structure is different from that of the second antenna structure.

When the method is applied to the electronic device, the method may be run in an operating system of the electronic device, and may include, but is not limited to, a Windows operating system, a Mac OS operating system, an Android operating system, an IOS operating system, a Linux operating system, an Ubuntu operating system, a Windows Phone operating system, and the like.

An antenna control method comprising the steps of:

601. when the first antenna structure and the second antenna structure are both in a working state, determining the current working resonant frequency of the first antenna structure and the second antenna structure;

the working resonant frequency may be a resonant frequency at which the first antenna structure and the second antenna structure are currently operated, and the resonant frequency may be located in a low frequency band (700-.

In some embodiments, the current working resonant frequencies of the first antenna structure and the second antenna structure may be obtained from current frequency setting parameters of the electronic device, or may be obtained in other manners, for example, detecting a current resonant frequency value, and the specific implementation may be set according to the prior art.

602. And switching the variable capacitor to a preset capacitance value corresponding to the working resonant frequency according to the working resonant frequencies of the first antenna structure and the second antenna structure, so that the resonant frequencies of the first antenna structure and the second antenna structure are different.

The preset capacitance value refers to a capacitance value which is set in advance when the first antenna structure or the second antenna structure normally works at the working resonant frequency.

In some embodiments, if the matching circuit in the electronic device includes a matching sub-circuit, and the matching sub-circuit is connected in parallel with the variable capacitor, the variable capacitor includes a first capacitor and a switch, and the switch is connected in series with the first capacitor. The step of switching the variable capacitor to a preset capacitance value corresponding to the operating resonant frequency may include:

and according to the resonant frequency of the first antenna structure and/or the second antenna structure, the connection and disconnection of the first capacitor in the variable capacitor are controlled by controlling the connection and disconnection of the selector switch so as to change the capacitance value of the variable capacitor.

The capacitance value of the variable capacitor is changed by controlling the on-off of the change-over switch, mutual interference can be easily caused according to whether the first antenna structure and the second antenna structure are mutually interfered, and the capacitance value of the variable capacitor is switched in a targeted manner, so that the signal radiation efficiency of other resonant frequencies is ensured on the premise of reducing the antenna interference.

Specifically, when the first antenna structure and/or the second antenna structure is/are at the first resonant frequency, the first capacitor is electrically connected with the matching circuit, and the first capacitor is connected in parallel with the matching sub-circuit;

and when the first antenna structure and/or the second antenna structure is/are at the second resonant frequency, the first capacitor and the matching circuit are in an electrically disconnected state.

The first resonant frequency is a low-frequency resonant frequency, and the second resonant frequency is a medium-frequency resonant frequency or a high-frequency resonant frequency.

The low-frequency resonant frequency easily causes interference among multiple antennas, and the capacitance value of the variable capacitor is changed under the low-frequency resonant frequency, so that the interference can be effectively reduced, and the transmission efficiency of the antennas is improved. And under the medium-frequency resonance frequency or the high-frequency resonance frequency with less mutual interference, the resonance frequencies of the first antenna structure and the second antenna structure are kept consistent, so that the signal radiation efficiency of the antenna structure can be ensured.

Therefore, in the antenna control method in the embodiment of the present application, the variable capacitor may be used to adjust the resonant frequency of the antenna, so that the resonant frequencies between the multiple antennas are different, thereby reducing interference between the multiple antennas and further improving the radiation quality of the antenna.

Referring to fig. 12, a sixth structure of an electronic device according to an embodiment of the present application is shown.

The electronic device may be a smart phone, a tablet computer, or the like, or the electronic devices described in fig. 1-5 and fig. 10. As shown in fig. 12, the electronic device 700 includes a processor 701 and a memory 702. The processor 701 is electrically connected to the memory 702.

The processor 701 is a control center of the electronic device 700, connects various parts of the entire electronic device using various interfaces and lines, and performs various functions of the electronic device and processes data by running or calling a computer program stored in the memory 702 and calling data stored in the memory 702, thereby performing overall monitoring of the electronic device.

In this embodiment, the processor 701 in the electronic device 700 loads instructions corresponding to one or more processes of the computer program into the memory 702 according to the following steps, and the processor 701 executes the computer program stored in the memory 702, so as to implement various functions, for example:

when the first antenna structure and the second antenna structure are both in a working state, determining the current working resonant frequency of the first antenna structure and the second antenna structure;

In some embodiments, the processor 701 further performs the steps of:

and according to the resonant frequency of the first antenna structure and/or the second antenna structure, the connection and disconnection of the first capacitor in the variable capacitor are controlled by controlling the connection and disconnection of the selector switch, so that the capacitance value of the variable capacitor is changed.

In some embodiments, the processor 701 further performs the steps of:

when the first antenna structure and/or the second antenna structure is/are at a first resonant frequency, the first capacitor is electrically connected with the matching circuit, and the first capacitor is connected with the matching sub-circuit in parallel;

The memory 702 may be used to store computer programs and data. The memory 702 stores a computer program having instructions embodied therein that are executable in the processor. The computer program may constitute various functional modules. The processor 701 executes various functional applications and data processing by calling a computer program stored in the memory 702, for example:

Therefore, in the embodiment of the present application, the variable capacitor is used to adjust the resonant frequency of the antenna, so that the resonant frequencies of the multiple antennas are different, thereby reducing interference among the multiple antennas and further improving the radiation quality of the antenna.

It should be noted that, all or part of the steps in the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer-readable storage medium, which may include, but is not limited to: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.

The antenna assembly, the electronic device, and the antenna control method provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to illustrate the principles and implementations of the present application, and the above description of the embodiments is only used to help understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An antenna assembly for an electronic device, the electronic device including a processor, the antenna assembly comprising a first antenna structure and a second antenna structure, wherein:

the first antenna structure is provided with a third matching circuit, the third matching circuit comprises a variable capacitor and a matching sub-circuit in the third matching circuit, and the matching sub-circuit in the third matching circuit is connected with the variable capacitor in parallel;

the second antenna structure is provided with a second matching circuit, the second matching circuit comprises a variable capacitor and a matching sub-circuit in the second matching circuit, the matching sub-circuit in the second matching circuit is connected with the variable capacitor in parallel, the variable capacitor comprises a first capacitor and a change-over switch, and the change-over switch is connected with the first capacitor in parallel;

the variable capacitor is arranged on the second matching circuit and the third matching circuit;

the switch controls the switching of the capacitance value of the first capacitor according to the current working resonant frequency of the second antenna structure, so that the resonant frequency between the first antenna structure and the second antenna structure is different, and the phase of the signal radiated by the second antenna structure is changed, so as to reduce the envelope correlation coefficient between the signal radiated by the first antenna structure and the signal radiated by the second antenna structure; or

The processor is connected with the first antenna structure and/or the second antenna structure, so that the processor can control and adjust the capacitance value of the variable capacitor, so that the resonant frequency between the first antenna structure and the second antenna structure is different, and the phase of the signal radiated by the second antenna structure is changed, so as to reduce the envelope correlation coefficient between the signal radiated by the first antenna structure and the signal radiated by the second antenna structure.

2. The antenna assembly of claim 1, wherein the switch is configured to place the first capacitor in electrical connection with the second matching circuit and to place the first capacitor in parallel with a matching sub-circuit in the second matching circuit when the first antenna structure and/or the second antenna structure is at a first resonant frequency; the switch is further configured to electrically disconnect the first capacitor from the second matching circuit when the first antenna structure and/or the second antenna structure is at the second resonant frequency.

3. The antenna assembly of claim 2, wherein the first resonant frequency is a low frequency resonant frequency and the second resonant frequency is a mid frequency resonant frequency or a high frequency resonant frequency.

4. An antenna assembly according to any one of claims 1 to 3, wherein the first and second antenna structures each comprise a feed module and a ground module, the second and third matching circuits each being provided on the respective ground module.

5. An antenna assembly according to any one of claims 1 to 3, wherein the first antenna structure is for signal radiating structure as a main set antenna and the second antenna structure is for signal radiating structure as a diversity antenna.

6. An electronic device, comprising an antenna assembly and a processor, wherein:

the antenna assembly comprises a first antenna structure and a second antenna structure, wherein the first antenna structure is provided with a third matching circuit, the third matching circuit comprises a variable capacitor and a matching sub-circuit in the third matching circuit, the matching sub-circuit in the third matching circuit is connected with the variable capacitor in parallel, the second antenna structure is provided with a second matching circuit, the second matching circuit comprises a variable capacitor and a matching sub-circuit in the second matching circuit, the matching sub-circuit in the second matching circuit is connected with the variable capacitor in parallel, the variable capacitor comprises a first capacitor and a change-over switch, the change-over switch is connected with the first capacitor in parallel, and the variable capacitor is arranged on the second matching circuit and the third matching circuit;

the processor controls the switch of the capacitance value of the first capacitor by controlling the switch according to the current working resonant frequency of the second antenna structure, so that the resonant frequency between the first antenna structure and the second antenna structure is different, and the phase of the signal radiated by the second antenna structure is changed, so as to reduce the envelope correlation coefficient between the signal radiated by the first antenna structure and the signal radiated by the second antenna structure; or

7. The electronic device of claim 6, wherein the processor is configured to control the switch to turn on when the first antenna structure and/or the second antenna structure is at a first resonant frequency, to electrically connect the first capacitor to the second matching circuit, and to connect the first capacitor in parallel with a matching sub-circuit in the second matching circuit; the processor is further configured to control the switch to be turned off when the first antenna structure and/or the second antenna structure is/are at the second resonant frequency, so that the first capacitor and the second matching circuit are electrically disconnected.

8. The electronic device of claim 7, wherein the first resonant frequency is a low frequency resonant frequency and the second resonant frequency is a medium frequency resonant frequency or a high frequency resonant frequency.

9. The electronic device of any of claims 6-8, wherein the first antenna structure and the second antenna structure each include a feed module and a ground module, the second matching circuit and the third matching circuit each being disposed on the corresponding ground module.

10. The electronic device of any of claims 6-8, wherein the first antenna structure is configured to operate as a signal radiating structure for a main set antenna and the second antenna structure is configured to operate as a signal radiating structure for a diversity antenna.

11. An antenna control method applied to an electronic device, wherein the electronic device comprises an antenna assembly and a processor, and wherein:

the method is executed on the processor and comprises the following steps:

according to the working resonant frequency, switching the first capacitor to a preset capacitance value corresponding to the working resonant frequency so as to enable the resonant frequency between the first antenna structure and the second antenna structure to be different, and enabling the phase of a signal radiated by the second antenna structure to be changed so as to reduce the envelope correlation coefficient between the signal radiated by the first antenna structure and the signal radiated by the second antenna structure; or

And controlling and adjusting the capacitance value of the variable capacitor to enable the resonant frequency between the first antenna structure and the second antenna structure to be different, and enabling the phase of the signal radiated by the second antenna structure to be changed so as to reduce the envelope correlation coefficient between the signal radiated by the first antenna structure and the signal radiated by the second antenna structure.

12. The method of claim 11, wherein after determining the current operating resonant frequency of the first and second antenna structures when the first and second antenna structures are both in an operating state, the method comprises:

when the first antenna structure and/or the second antenna structure is/are at a first resonant frequency, the first capacitor and the second matching circuit are electrically connected;

and when the first antenna structure and/or the second antenna structure are/is at the second resonant frequency, the first capacitor and the second matching circuit are/is in an electrically disconnected state.

13. The antenna control method according to claim 12, wherein the first resonance frequency is a low-frequency resonance frequency, and the second resonance frequency is a medium-frequency resonance frequency or a high-frequency resonance frequency.