CN217823237U

CN217823237U - Electronic device

Info

Publication number: CN217823237U
Application number: CN202221872880.8U
Authority: CN
Inventors: 罗智杰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-11-15
Anticipated expiration: 2032-07-18

Abstract

The present application relates to an electronic device. The electronic equipment comprises a first radiator and a second radiator which are arranged on the first shell, and a first gap for capacitive coupling is arranged between the first radiator and the second radiator; the third radiator included in the second antenna unit is formed by a second gap formed in the second shell; in addition, when the electronic equipment is in a folded state, the projection of the first gap towards the second shell falls into at least part of the second gap; furthermore, based on this application for when electronic equipment is fold condition, the coupling gap on the first casing can be the symmetry setting with the gap on the second casing, thereby can optimize the antenna when electronic equipment is fold condition and reduce the width of a wave, guarantee the performance of antenna.

Description

Electronic device

Technical Field

The present application relates to the field of communications technologies, and in particular, to an electronic device.

Background

With the development of communication technology, users have increasingly demanded the portability and appearance of electronic devices. With the trend of pursuing extremely large screens, foldable electronic devices (such as foldable mobile phones) are increasingly favored.

Antennas are typically included in electronic devices to implement communication functions of the electronic devices; however, in the related art, when the folding-screen electronic apparatus is in the folded state, the communication performance of the antenna may be degraded.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide an electronic device capable of improving antenna communication performance in a folded state.

In a first aspect, the present application provides an electronic device, including a first housing, a second housing, a first antenna unit, and a second antenna unit, where the second housing is rotatably connected to the first housing, so that the electronic device is switched between an unfolded state and a folded state;

the first antenna unit comprises a first radiator and a second radiator which are arranged on the first shell, and a first gap is formed between the first radiator and the second radiator so that the first radiator and the second radiator are in capacitive coupling;

the second antenna unit comprises a third radiator formed by a second gap formed in the second shell;

when the electronic device is in a folded state, the projection of the first gap towards the second shell falls into at least part of the second gap.

In one embodiment, the third radiator comprises a suspension branch; the suspension branch knot is formed by at least one antenna slot formed in the second shell, and the second slot is communicated with the antenna slot;

when the electronic device is in a folded state, at least part of projections of the first radiator and the second radiator towards the second shell fall into the area where the third radiator is located.

In one embodiment, the electronic device further comprises radio frequency circuitry;

the radio frequency circuit is respectively connected with the first antenna unit and the second antenna unit; the radio frequency circuit is used for switching the first antenna unit or the second antenna unit to a currently enabled main antenna.

In one of the embodiments, the first and second electrodes are,

the first antenna unit further comprises a first signal source, a first matching circuit, a first feed point, a first grounding point and a second grounding point, wherein the first signal source and the first matching circuit are arranged on the first radiating body;

the first grounding point is arranged at one end of the first radiating body deviating from the first gap; the second grounding point is arranged at one end of the second radiator, which is deviated from the first gap;

the radio frequency circuit is connected with a first signal source; the radio frequency circuit is used for determining an antenna frequency band of the first antenna unit;

the first signal source is electrically connected with the first matching circuit to the first feeding point; the first matching circuit is used for switching the first antenna unit to a corresponding working state according to the antenna frequency band.

In one embodiment, the first feed point is disposed proximate to the first slot;

when the electronic equipment is in an unfolding state, a first resonance mode is supported so as to support the receiving and transmitting of low-frequency radio frequency signals; the first resonant mode is a fundamental mode of the first radiator corresponding to the first slot from the first ground point.

In one embodiment, the first matching circuit comprises a first antenna switch; one end of the first antenna switch is connected with a first signal source, and the other end of the first antenna switch is connected with a first feeding point;

when the electronic device is in a folded state and the second antenna unit is used as the currently enabled main antenna, the first antenna switch is used for adjusting the resonant frequency of the first antenna unit until the resonant frequencies of the first antenna unit and the second antenna unit are different.

In one embodiment, the second antenna unit further comprises a fourth radiator; and a third gap is arranged between the fourth radiator and the third radiator so that the fourth radiator and the third radiator are capacitively coupled.

In one of the embodiments, the first and second electrodes are,

the second antenna unit further comprises a second signal source, a second matching circuit, a second antenna switch, a second feed point, a second grounding point and a third grounding point, wherein the second feed point and the second grounding point are arranged on the third radiator; the third grounding point is arranged at one end of the fourth radiator departing from the third gap;

the radio frequency circuit is connected with a second signal source; the second signal source is electrically connected with the second matching circuit to the second feeding point; the second grounding point is electrically connected with the second antenna switch, and the second antenna switch is grounded;

when the electronic device is in a folded state and the first antenna unit is used as the currently-started low-frequency main antenna, the second antenna switch is used for adjusting the resonant frequency of the second antenna unit until the resonant frequency of the second antenna unit is different from that of the first antenna unit.

In one embodiment, the third radiator is provided with a first end close to the second slot and a second end close to the third slot; the second grounding point is arranged between the second end and the second feeding point;

when the electronic equipment is in an unfolded state, a second resonance mode and a third resonance mode are supported to support the receiving and transmitting of low-frequency radio-frequency signals, wherein the second resonance mode is a fundamental mode of a radiator corresponding to a third slot from a second feeding point; the third resonant mode is a fundamental mode of the third radiator corresponding to the second end from the first end.

In one embodiment, the electronic device further comprises a third antenna element; the third antenna unit comprises a fifth radiator formed by a fourth gap formed in the first shell;

when the electronic device is in a folded state, the projection of the third gap towards the first shell at least partially falls into the fourth gap.

In one embodiment, the third antenna unit further includes a third signal source, a third matching circuit, a third feeding point disposed on the fifth radiator, and a fourth grounding point;

the fourth grounding point is arranged at one end, deviating from the fourth gap, of the fifth radiator; the third feed point is arranged at one end of the fifth radiator close to the fourth gap;

the third signal source is electrically connected to the third matching circuit to the third feeding point.

In the electronic device, the first antenna unit includes a first radiator and a second radiator that are disposed on the first housing, and a first slot for capacitive coupling is disposed between the first radiator and the second radiator; the third radiator included in the second antenna unit is formed by a second gap formed in the second shell; in addition, when the electronic equipment is in a folded state, the projection of the first gap towards the second shell falls into at least part of the second gap; furthermore, based on this application for when electronic equipment is fold condition, the coupling gap on the first casing can be the symmetry setting with the gap on the second casing, thereby can optimize the antenna when electronic equipment is fold condition and reduce the width of a wave, guarantee the performance of antenna.

Drawings

FIG. 1 is a schematic diagram of an electronic device according to an embodiment;

FIG. 2 is a schematic diagram of an embodiment of an electronic device in a folded state;

FIG. 3 is a diagram illustrating an exemplary RF circuit configuration of an electronic device;

FIG. 4 is a schematic diagram of a first antenna element according to an embodiment;

FIG. 5 is a schematic diagram illustrating a resonant mode of the first antenna element in an unfolded state of the electronic device according to an embodiment;

FIG. 6 is a schematic diagram of an electronic device in another embodiment;

FIG. 7 is a diagram illustrating a second antenna element according to one embodiment;

FIG. 8 is a diagram illustrating a second antenna unit according to an embodiment

FIG. 9 is a schematic diagram illustrating a resonant mode of the second antenna element in an unfolded state of the electronic device in accordance with an embodiment;

fig. 10 is a schematic diagram of the antenna efficiency of the first antenna element in a folded state of the electronic device in an embodiment;

fig. 11 is a schematic diagram of the antenna efficiency of the second antenna unit in the folded state of the electronic device in one embodiment;

FIG. 12 is a diagram showing a detailed structure of an electronic apparatus according to an embodiment;

fig. 13 is a detailed structural diagram of the electronic device in a folded state;

fig. 14 is a schematic structural diagram of a third antenna unit in one embodiment;

FIG. 15 is a diagram of the internal structure of an electronic device in one embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. Spatial relational terms, such as "under," "below," "under," "over," and the like may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "under" can encompass both an orientation of above and below. In addition, the device may comprise additional orientations (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. In addition, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", and the like if there is a transfer of electrical signals or data between the connected objects. As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.

The conventional partially foldable electronic device can be folded by using the foldable function of the flexible display screen. However, when the conventional foldable electronic device is in a folded state (hereinafter referred to as a cover closing state), a complete metal middle frame is arranged below the projection of part of the antennas, so that the efficiency of the antennas is reduced more, and the amplitude reduction of the cover closing state cannot be optimized by an antenna switch, so that the performance of the antennas is always at a poor level. Meanwhile, the side edge gaps after the cover is closed cannot be symmetrical, so that the appearance is influenced. In this regard, the inventors propose an electronic apparatus in the embodiment of the present application.

The antenna in the application can be applied to electronic equipment. In some examples, the antenna may implement multi-mode switching in the low frequency (LB) Band, where low frequency may refer to below 1000MHz; in other examples, the antenna may also implement multi-mode switching in a Medium High Band (MHB), where the medium High frequency may refer to 1000MHz-3000MHz; in addition, a High frequency (HB) Band can be supported, wherein the High frequency can be 2500-2700MHz. It should be noted that the antenna may also support a Carrier Aggregation (CA) frequency band.

Further, the antenna in this application may refer to an LB main antenna. In addition, the present application may include two LB main antennas that may be switched with each other; the antenna can cover LB frequency bands such as LTE (Long Term Evolution) B5/8/20/28, NR (New Radio) N5/8/20/28, GSM (Global System for Mobile Communications) G850/900, and the like.

As used herein, "electronic equipment" (which may also be referred to as a "terminal" or "mobile terminal" or "electronic device") includes, but is not limited to, devices that are configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, memo pad, calendar and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module.

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In one embodiment, as shown in fig. 1, an electronic device 100 is provided, which includes a first casing 10, a second casing 20, a first antenna unit 30 and a second antenna unit 40, wherein the second casing 20 is rotatably connected to the first casing 10 to switch the electronic device 100 between an unfolded state and a folded state;

the first antenna unit 30 includes a first radiator 310 and a second radiator 320 disposed on the first housing 10, and a first gap 301 is disposed between the first radiator 310 and the second radiator 320, so that the first radiator 310 and the second radiator 320 are capacitively coupled;

the second antenna unit 40 includes a third radiator 410, and the third radiator 410 is formed by a second slot 401 opened on the second housing 20;

when the electronic device 100 is in the folded state, the projection of the first slit 310 toward the second housing 20 falls into at least a portion of the second slit 410.

Specifically, the electronic device 100 may include a first housing 10 and a second housing 20, wherein the second housing 20 is rotatably connected to the first housing 10; further, when the second casing 20 and the first casing 10 rotate relatively to each other to be unfolded relatively, the electronic device 100 is unfolded; when the second casing 20 and the first casing 10 are relatively rotated to be relatively overlapped, the electronic device 100 is folded, and the electronic device 100 can be switched between the unfolded state and the folded state.

The housing of the electronic device may have a corresponding number of sides, and the radiator of the antenna unit may be adjacent to the sides of the housing; taking the electronic device 100 shown in fig. 1 in an unfolded state as an example, the first casing 10 may have a side 1 adjacent to the second casing 20, the second casing 20 may have a side a adjacent to the first casing 10, and the side 1 and the side a are disposed adjacently. Further, the first casing 10 may also have a side 2 away from the second casing 20, and a side 3 adjacent to the second casing 20; the second casing 20 may have a side B remote from the first casing 10 and a side C adjacent to the first casing 10. Side 2 is disposed opposite side B and side 3 is disposed adjacent side C.

In some examples, the radiator of the first antenna element 30 may be disposed on the sides of the first casing 10, and the radiator of the second antenna element 40 may be disposed on the sides of the second casing 20.

Taking the adjacent side 1 and the adjacent side a shown in fig. 1 as an example, the first antenna element 30 includes radiators adjacent to the side 1, and a coupling slot may be a slot that enables capacitive coupling between the radiators in a portion of the first antenna element 30 adjacent to the side 1; specifically, the first antenna unit 30 may include a first radiator 310 and a second radiator 320 disposed on the first casing 10, and a first gap 301 is disposed between the first radiator 310 and the second radiator 320, so that the first radiator 310 and the second radiator 320 are capacitively coupled. The capacitive coupling is that an electric field is generated between the first radiator 310 and the second radiator 320, a signal of the first radiator 310 can be transmitted to the second radiator 320 through the electric field, and a signal of the second radiator 320 can be transmitted to the first radiator 310 through the electric field, so that the first radiator 310 and the second radiator 320 can be electrically connected even in an off state.

Further, the width of the first slit 301 may be adjusted, for example, adjusted according to actual conditions; in some examples, the first antenna element 30 may further include a ground point disposed on the first radiator 310 and a ground point disposed on the second radiator 320.

In addition, taking the adjacent side 1 and side a in fig. 1 as an example, the second antenna unit 40 includes a radiator adjacent to the side a, and a part of the radiator adjacent to the side a in the second antenna unit 40 is configured to be formed by opening a slot on the side a; specifically, the second antenna unit 40 may include a third radiator 410, and the third radiator 410 is formed by a second slot 401 formed in the second casing 20. Wherein, the second slit 401 can be obtained by side slitting. Further, the second slit 401 may refer to a slit on a frame surrounding the periphery of the substrate of the electronic device 100.

In some examples, the width of the second slit 401 may be adjustable, for example, adjusted according to actual conditions; in some examples, as shown in fig. 1, the second antenna unit 40 may further include a ground point disposed on the third radiator 410, and meanwhile, a portion of the third radiator 410 may be adjacent to the side B.

As shown in fig. 2, when the electronic device 100 is folded, the projection of the first slit 301 toward the second housing 20 falls into at least a portion of the second slit 401. Furthermore, when the electronic device is in a folded state, the coupling slot (the first slot 301) on the first housing 10 and the slot (the second slot 401) on the second housing 20 are at least partially symmetrical, so that the antenna performance is improved; further, when the electronic device is in a folded state, the coupling gap (the first gap 301) on the first housing 10 and the gap (the second gap 401) on the second housing 20 are symmetrically arranged, so that the amplitude reduction of the antenna when the electronic device is in the folded state can be optimized, and the performance of the antenna can be ensured.

Meanwhile, the coupling gap (the first gap 301) on the first casing 10 and the gap (the second gap 401) on the second casing 20 are symmetrically arranged, so that the electronic device 100 can cover the gaps symmetrically, and a symmetrical gap design is realized.

Further, as shown in fig. 2, the electronic device 100 may further include a rotating member 50, and the rotating member 50 is rotatably connected between the first casing 10 and the second casing 20 to relatively rotate the first casing 10 and the second casing 20. In some examples, the rotating member 50 may include a rotating shaft through which the first and

second housings

10 and 20 are rotatably connected. In other examples, the first housing 10 and the second housing 20 may be rotatably connected in other manners as long as the first housing 10 can rotate relative to the second housing 20.

In one embodiment, as shown in fig. 2, the third radiator 410 may include a suspension branch 412; the suspension branch is formed by at least one antenna slot formed in the second shell 20, and the second slot 401 is communicated with the antenna slot;

when the electronic device is in a folded state, the projections of the first radiator 310 and the second radiator 320 toward the second casing 20 at least partially fall into the region where the third radiator 410 is located.

Specifically, the third radiator 410 in the present application may include a suspension branch, as shown in fig. 2, the suspension branch may be formed by at least one antenna slot opened in the second casing 20, and the second slot 401 is communicated with the antenna slot.

Based on this application, when electronic equipment 100 is fold condition, the gap symmetry of projection below, wherein, the suspension minor matters that the third irradiator contained can produce the antenna groove with electronic equipment 100 is whole, and then the antenna groove projection below of first antenna element 30 is the antenna groove of second antenna 40, as shown in fig. 2 to be favorable to the antenna radiation.

In one embodiment, as shown in FIG. 3, the electronic device 100 may further include radio frequency circuitry 60;

the radio frequency circuit 60 is respectively connected with the first antenna unit 30 and the second antenna unit 40; the radio frequency circuit is used to switch the first antenna element 30 or the second antenna element 40 to the currently enabled main antenna.

Specifically, taking the electronic device 100 shown in fig. 3 as an example in an unfolded state, the rf circuit 60 is connected to the first antenna unit 30 and the second antenna unit 40 respectively, and is used for switching the first antenna unit 30 or the second antenna unit 40 to a currently enabled main antenna. Further, the currently enabled main antenna in the electronic device 100 may be referred to as an LB main antenna, and the antenna unit that is not currently enabled as the LB main antenna may be used as an LB auxiliary antenna. In some examples, the primary and secondary LB antennas may all cover the LB bands LTE B5/8/20/28, NR N5/8/20/28, GSM G850/900, etc. The present application is able to cover the LB bandwidth required by the electronic device 100.

In some examples, the rf circuit 60 may include an rf chip, and the rf chip is connected to the first antenna unit 30 and the second antenna unit 40, so that the present application may perform switching between the primary and secondary LB antennas through the rf chip. Furthermore, the radio frequency chip can be connected with a signal source of the antenna unit, and the radio frequency chip determines the antenna frequency band of the antenna unit.

In one embodiment, referring to fig. 3, as shown in fig. 4, the first antenna unit 30 further includes a first signal source 702 and a first matching circuit 704, a first feeding point 706 disposed on the first radiator 310, a first grounding point 708, and a second grounding point 710 disposed on the second radiator 320;

the first ground point 708 is disposed at an end 11 of the first radiator 310 away from the first slot 301; the second ground point 710 is disposed at an end 12 of the second radiator 320 away from the first slot 301;

the radio frequency circuit 60 is connected with a first signal source 702; the radio frequency circuit is used for determining an antenna frequency band of the first antenna unit 30;

the first signal source 702 electrically connects the first matching circuit 704 to the first feeding point 706; the first matching circuit 704 is used to switch the first antenna unit 30 to a corresponding operating state according to the antenna frequency band.

Specifically, the rf circuit 60 may include an rf chip, the rf chip may be connected to the first signal source 702 of the first antenna unit 30, and the rf chip determines a frequency band of the first antenna unit 30, and the first matching circuit 704 may define a switching state according to the frequency band.

In one embodiment, the first feeding point 706 is disposed adjacent to the first slot 301;

when the electronic device 100 is in the unfolded state, the first resonance mode is supported to support the transceiving of the low-frequency radio frequency signal; the first resonant mode is from the first ground point 708 to the fundamental mode of the first radiator 30 corresponding to the first slot 301.

Specifically, as shown in fig. 5, when the electronic device 100 is in the unfolded state, the mode 1 of the first antenna element 30 is a first resonance mode, which in some examples is a fundamental mode of the first antenna element 30. Further, the first resonant mode is from the first ground point 708 to the fundamental mode of the first radiator 30 corresponding to the first slot 301.

In other examples, the first resonant mode may be switched by an antenna switch on the first matching circuit 704 to the resonant frequency.

In one embodiment, the first matching circuit 704 may include a first antenna switch; one end of the first antenna switch is connected to the first signal source 702, and the other end is connected to the first feeding point 706;

when the electronic device 100 is in the folded state and the second antenna unit 40 is used as the currently activated main antenna, the first antenna switch is used to adjust the resonant frequency of the first antenna unit 30 until the resonant frequencies of the first antenna unit 30 and the second antenna unit 40 are different.

Specifically, for example, the rf circuit 60 includes an rf chip; the rf chip is connected to the first signal source 702 of the first antenna unit 30, and then the rf chip can determine the frequency band of the first antenna unit 30, and the first antenna switch can define the state of antenna switching according to the frequency band determined by the rf chip, and in combination with fig. 5, in the mode 1, the antenna switch on the first matching circuit 704 can switch the resonant frequency. It should be noted that the first matching circuit 704 may further include an antenna matching circuit, one end of which is connected to the first signal source 702, and the other end of which is connected to the first feeding point 706.

As described above, when the second antenna unit 40 is used as the currently enabled main antenna, the present application adjusts the antenna switching state of the first antenna unit 30, so that the resonance of the first antenna unit 30 is longer or shorter, and thus the resonances of the two antenna units can be prevented from being at the same frequency (when the resonances of the two antennas are at the same frequency, the mutual influence between the two antennas is the largest), so that the influence of the first antenna unit 30 on the second antenna unit 40 can be reduced, and the efficiency is improved.

In one embodiment, as shown in fig. 6, the second antenna unit 40 further includes a fourth radiator 420; a third slot 402 is disposed between the fourth radiator 420 and the third radiator 410, so that the fourth radiator 420 and the third radiator 410 are capacitively coupled.

Specifically, for example, the side 1, the side a, and the side B of the electronic device 100, the third antenna unit 40 includes radiators adjacent to the side a, and radiators adjacent to the side B, and coupling gaps are formed between the radiators, where the coupling gaps may be gaps that enable capacitive coupling between the radiators; specifically, the second antenna unit 40 includes a third radiator 410 and a fourth radiator 420, the third radiator 410 is formed by a second slot 401 formed on a side a of the second casing 20, and the fourth radiator 420 is adjacent to the side.

Further, a third slot 402 is disposed between the third radiator 410 and the fourth radiator 420, so that the third radiator 410 and the fourth radiator 420 are capacitively coupled. The capacitive coupling means that an electric field is generated between the third radiator 410 and the fourth radiator 420, a signal of the third radiator 410 can be transmitted to the fourth radiator 420 through the electric field, and a signal of the fourth radiator 420 can be transmitted to the third radiator 410 through the electric field, so that the third radiator 410 and the fourth radiator 420 can be electrically connected even in an off state.

The width of the third slit 402 can be adjusted, for example, adjusted according to actual conditions; in some examples, the second antenna unit 40 may further include a ground point disposed on the third radiator 410, and a ground point disposed on the fourth radiator 420.

In one embodiment, taking the electronic device 100 shown in fig. 7 in an unfolded state as an example, the first antenna unit 30 includes a first signal source 702, the second antenna unit 40 includes a second signal source 802, and the radio frequency circuit 60 is connected to the first signal source 702 and the second signal source 802, respectively, and is configured to switch the first antenna unit 30 or the second antenna unit 40 to be a currently enabled main antenna. Further, the currently enabled main antenna in the electronic device 100 may be referred to as an LB main antenna, and the antenna unit that is not currently enabled as the LB main antenna may be used as an LB auxiliary antenna. In some examples, the primary and secondary LB antennas may all cover the LB bands LTE B5/8/20/28, NR N5/8/20/28, GSM G850/900, etc.

In some examples, the rf circuit 60 may include an rf chip, and the rf chip is connected to the first signal source 702 and the second signal source 802, so that the present application may perform switching between the main and auxiliary LB antennas through the rf chip. Furthermore, the radio frequency chip can be connected with a signal source of the antenna unit, and the radio frequency chip determines the antenna frequency band of the antenna unit.

In one embodiment, referring to fig. 7, as shown in fig. 8, the second antenna unit 40 further includes a second signal source 802, a second matching circuit 804, a second antenna switch 806, a second feeding point 808 disposed on the third radiator 410, a second grounding point 810, and a third grounding point 812 disposed on the fourth radiator 420; a third ground point 812 is disposed at an end of the fourth radiator 420 away from the third slot 402;

the radio frequency circuit 60 is connected with a second signal source 802; the second signal source 802 electrically connects the second matching circuit 804 to the second feeding point 808; the second grounding point 810 is electrically connected to the second antenna switch 806, and the second antenna switch 806 is grounded;

wherein, when the electronic device is in a folded state and the first antenna unit 30 is used as the currently enabled low-frequency main antenna, the second antenna switch 806 is used to adjust the resonant frequency of the second antenna unit 40 until the resonant frequency of the second antenna unit 40 is different from the resonant frequency of the first antenna unit 30.

Specifically, taking the rf circuit 60 including the rf chip as an example, the rf chip is connected to the first signal source 802 of the second antenna unit 30, so that the rf chip can determine the frequency band of the first antenna unit 40, and the second antenna switch 806 can define the antenna switching state according to the frequency band determined by the rf chip. Furthermore, when the first antenna unit 30 is used as the currently enabled main antenna, the present application adjusts the antenna switching state of the second antenna unit 40, so that the resonance of the second antenna unit 40 is longer or shorter, and thus the resonance of the two antenna units can be prevented from being at the same frequency (when the resonance of the two antennas is at the same frequency, the mutual influence between the two antennas is the largest), so that the influence of the second antenna unit 40 on the first antenna unit 30 can be reduced, and the efficiency is improved.

In one embodiment, as shown in fig. 8, the third radiator 410 is provided with a first end 13 near the second slot 401, and a second end 14 near the third slot 402; a second ground point 810 is disposed between the second end 14 and the second feeding point 808;

when the electronic device 100 is in the unfolded state, a second resonant mode and a third resonant mode are supported to support the transceiving of the low-frequency radio frequency signal, where the second resonant mode is a fundamental mode of a radiator corresponding to the third slot 402 from the second feeding point 808; the third resonant mode is a fundamental mode of the third radiator corresponding to the second end 14 from the first end 13.

Specifically, as shown in fig. 9, when the electronic apparatus 100 is in the unfolded state, the mode 2 of the second antenna unit 40 is the second resonance mode, and the mode 3 of the second antenna unit 40 is the third resonance mode.

The second resonant mode is the fundamental mode from the second feed point 808 to the third slot 402; further, the second resonance mode (mode 2) switches the resonance frequency by the second antenna switch 806 in fig. 8.

The third resonance mode is a fundamental mode of the radiator corresponding to the second end 14 from the first end 13; it should be noted that the third radiator 410 may be used as the first antenna and the second antenna, and the third resonant mode may be a fundamental mode of the first antenna plus the second antenna. It is understood that the first and second antennas may not be limited to the first radiator 10.

To further illustrate the aspects of the present application, the following is described with specific examples:

when the electronic device 100 is in a folded state (in a closed-cover mode), taking LTE B8 (0.88-0.96 GHz) as an example, when the switching mode is that the first antenna unit 30 is a main antenna and the second antenna unit 40 is a sub-antenna, the efficiency of the first antenna unit 30 can be improved by switching the state of the second antenna unit 40 (using the second antenna switch 806 in fig. 8), as shown in fig. 10, the frequency center value is improved to 2dB, and the maximum can be improved to 3.5 dB.

Further, when the electronic device 100 is in a folded state (in a closed-cover mode), taking LTE B8 (0.88-0.96 GHz) as an example, when the switching mode is that the second antenna unit 40 is a main antenna and the first antenna unit 30 is a sub-antenna, the efficiency of the second antenna unit 40 can be improved by switching the state of the first antenna unit 30 (an antenna switch on the first matching circuit 704 in fig. 4 can be used), as shown in fig. 11, the frequency center value is improved to 1.1dB, and the maximum can reach 3 dB.

More than, this application is through adjusting the antenna on-off state of vice antenna for the resonance of vice antenna is long on the side or short on the side, can make vice antenna reduce the influence of main antenna, and efficiency has the promotion.

Taking the example that the second antenna unit includes the third radiator 410 and the fourth radiator 420, in an embodiment, as shown in fig. 12, the electronic device 100 may further include a third antenna unit 90; the third antenna unit 90 includes a fifth radiator 910, and the fifth radiator 910 is formed by a fourth slot 901 formed in the first casing 10;

when the electronic device 100 is in the folded state, the projection of the third slit 402 toward the first casing 10 at least partially falls into the fourth slit 901.

Specifically, taking the opposite side 2 and side B as an example, the third antenna element 90 includes a radiator adjacent to the side 2, and the radiator adjacent to the side 2 is configured to be formed by opening a slot on the side 2; specifically, the third antenna unit 90 may include a fifth radiator 910, and the fifth radiator 910 is formed by a fourth slot 901 formed in the first casing 10. The fourth slit 901 may be obtained by side slitting. Further, the fourth slit 901 may refer to a slit on a frame surrounding the periphery of the substrate of the electronic device 100.

In some examples, the width of the fourth slit 901 may be adjusted, for example, according to actual conditions; in some examples, as shown in fig. 12, the third antenna unit 90 may further include a ground point disposed on the fifth radiator 910.

As shown in fig. 13, when the electronic device 100 is folded, the projection of the third slit 402 toward the first casing 10 at least partially falls into the fourth slit 901. Furthermore, when the electronic device is in a folded state, the coupling slot (third slot 402) on the second housing 20 is at least partially symmetrical to the slot (fourth slot 901) on the first housing 10, so that the antenna performance is improved; further, when the electronic device is in a folded state, the coupling slot (third slot 402) on the second housing 20 and the slot (fourth slot 901) on the first housing 10 are symmetrically arranged, so that the antenna amplitude reduction when the electronic device is in the folded state can be optimized, and the performance of the antenna can be ensured.

Meanwhile, the coupling gap (third gap 402) on the second casing 20 and the gap (fourth gap 901) on the first casing 10 are symmetrically arranged, so that the electronic device 100 can cover the gaps symmetrically, the symmetric gap design is realized, and the appearance requirement is met.

In some examples, the third antenna unit 90 may be implemented by using a B20 or GPS L5 antenna, and the third antenna unit 90 may be multiplexed with other antenna frequency band requirements in the electronic device 100, specifically, the antenna form of the third antenna unit 90 may obtain an intermediate frequency or a high frequency antenna frequency band according to the difference between the feed point position and the matching.

In one embodiment, as shown in fig. 14, the third antenna unit 90 further includes a third signal source 903 and a third matching circuit 905, and a third feeding point 907 and a fourth grounding point 912 disposed on the fifth radiator 910;

the fourth ground point 912 is disposed at an end of the fifth radiator 910 away from the fourth slit 901; the third feeding point 907 is disposed at one end of the fifth radiator 910 close to the fourth slot 901;

the third signal source 903 electrically connects the third matching circuit 905 to the third feeding point 907.

More than, based on this application for when electronic equipment is fold condition, the coupling gap on the casing can be the symmetry setting with the gap on the relative casing, not only can optimize the antenna amplitude reduction when electronic equipment is fold condition, guarantees the performance of antenna, can also satisfy the outward appearance demand.

In one embodiment, an electronic device is provided, which may be a terminal, and the internal structure thereof may be as shown in fig. 15. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program to run on the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.

Those skilled in the art will appreciate that the architecture shown in fig. 15 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. An electronic device is characterized by comprising a first shell, a second shell, a first antenna unit and a second antenna unit, wherein the second shell is rotatably connected with the first shell, so that the electronic device is switched between an unfolded state and a folded state;

the second antenna unit comprises a third radiator, and the third radiator is formed by a second slot formed in the second shell;

when the electronic device is in the folded state, the projection of the first gap towards the second shell falls into at least part of the second gap.

2. The electronic device of claim 1, wherein the third radiator comprises a floating stub; the suspension branch knot is formed by at least one antenna slot formed in the second shell, and the second gap is communicated with the antenna slot;

electronic equipment is during fold condition, first irradiator with second irradiator orientation the projection at least part of second casing falls into third irradiator place region.

3. The electronic device of claim 1 or 2, further comprising radio frequency circuitry;

4. The electronic device of claim 3,

the first grounding point is arranged at one end, deviating from the first gap, of the first radiating body; the second grounding point is arranged at one end, deviating from the first gap, of the second radiator;

the radio frequency circuit is connected with the first signal source; the radio frequency circuit is used for determining an antenna frequency band of the first antenna unit;

the first signal source electrically connects the first matching circuit to the first feed point; the first matching circuit is used for switching the first antenna unit to a corresponding working state according to the antenna frequency band.

5. The electronic device of claim 4, wherein the first feed point is disposed proximate to the first slot;

when the electronic equipment is in the unfolding state, a first resonance mode is supported so as to support the receiving and transmitting of low-frequency radio frequency signals; the first resonant mode is a fundamental mode of the first radiator corresponding to the first slot from the first ground point.

6. The electronic device of claim 4, wherein the first matching circuit comprises a first antenna switch; one end of the first antenna switch is connected with the first signal source, and the other end of the first antenna switch is connected with the first feeding point;

when the electronic equipment is in the folded state and the second antenna unit is used as the current enabled main antenna, the first antenna switch is used for adjusting the resonant frequency of the first antenna unit until the resonant frequency of the first antenna unit is different from that of the second antenna unit.

7. The electronic device of claim 3, wherein the second antenna unit further comprises a fourth radiator; and a third gap is formed between the fourth radiator and the third radiator so that the fourth radiator and the third radiator are in capacitive coupling.

8. The electronic device of claim 7,

the second antenna unit further comprises a second signal source, a second matching circuit, a second antenna switch, a second feed point, a second grounding point and a third grounding point, wherein the second feed point and the second grounding point are arranged on the third radiator; the third grounding point is arranged at one end, deviating from the third gap, of the fourth radiator;

the radio frequency circuit is connected with the second signal source; the second signal source is electrically connected with the second matching circuit to the second feed point; the second grounding point is electrically connected with the second antenna switch, and the second antenna switch is grounded;

when the electronic device is in the folded state and the first antenna unit is used as the currently enabled low-frequency main antenna, the second antenna switch is used for adjusting the resonant frequency of the second antenna unit until the resonant frequency of the second antenna unit is different from that of the first antenna unit.

9. The electronic device of claim 8, wherein the third radiator is provided with a first end near the second slot and a second end near the third slot; the second grounding point is arranged between the second end and the second feeding point;

when the electronic device is in the unfolded state, supporting a second resonance mode and a third resonance mode to support receiving and transmitting of low-frequency radio-frequency signals, wherein the second resonance mode is a base mode of a radiator corresponding to the third slot from the second feeding point; the third resonant mode is a fundamental mode of the third radiator corresponding to the second end from the first end.

10. The electronic device of claim 7, further comprising a third antenna element; the third antenna unit comprises a fifth radiator formed by a fourth gap formed in the first shell;

when the electronic device is in the folded state, the projection of the third gap towards the first shell at least partially falls into the fourth gap.

11. The electronic device of claim 10, wherein the third antenna unit further comprises a third signal source and a third matching circuit, and a third feeding point and a fourth grounding point disposed on the fifth radiator;

the fourth grounding point is arranged at one end, deviating from the fourth slot, of the fifth radiating body; the third feeding point is arranged at one end, close to the fourth gap, of the fifth radiator;

the third signal source electrically connects the third matching circuit to the third feeding point.