CN115313046A

CN115313046A - Electronic equipment

Info

Publication number: CN115313046A
Application number: CN202211057439.9A
Authority: CN
Inventors: 吴小浦
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-11-08
Also published as: WO2024045759A1

Abstract

The application discloses electronic equipment, the electronic equipment that this application embodiment provided includes four low frequency antennas, and four low frequency antennas constitute an ultralow ECC four low frequency antenna system, greatly reduced the ECC between the LB antenna, reduced the ECC of MIMO antenna, promoted the throughput rate of MIMO system to channel capacity has been improved, data transmission speed has been promoted. Moreover, the 4 LB antennas are distributed on four sides of the electronic device, and at least 2 LB antennas are kept in a non-holding state for various handheld states of the electronic device, so that the electronic device keeps good communication performance, and user experience is improved.

Description

Electronic equipment

Technical Field

The present application relates to, but not limited to, communication technologies, and more particularly, to an electronic device.

Background

With the increasing demand of people for communication and the rapid development of scientific technology, the 5G communication technology has been paid unprecedented attention and development. Under the demand of high-rate data transmission, multiple Input Multiple Output (MIMO) technology is receiving more and more attention, and MIMO wireless communication technology has become an important issue for research in the field of communication. The core idea is that on the basis of the traditional communication system, a plurality of antennas are used at a transmitting end, and a plurality of antennas are used for receiving signals at the same time, so that the multipath propagation of a wireless channel is fully utilized, the transmission rate, the receiving quality and the frequency spectrum utilization rate of the signals are improved by means of increased spatial freedom, and the transmission rate can be increased in multiples under the condition of certain bandwidth.

Generally, the lower the frequency, the larger the Envelope Correlation Coefficient (ECC) is, and therefore how to reduce the ECC between low frequency band (LB) antennas is a problem that needs to be solved urgently.

Disclosure of Invention

The application provides an electronic device, which can reduce ECC among LB antennae, improve channel capacity and improve data transmission speed.

An embodiment of the present application provides an electronic device, including:

the device comprises a first side edge, a second side edge, a third side edge and a fourth side edge which are sequentially connected, wherein the first side edge is opposite to the third side edge, and the second side edge is opposite to the fourth side edge;

the first low-frequency antenna is used for supporting a first frequency band and comprises a first radiating body and a first feed source, wherein the first radiating body is arranged on the first side edge and is provided with a first grounding end and a first free end, the first grounding end is grounded, a first feed point electrically connected with the first feed source is arranged between the first grounding end and the first free end, and the first free end points to the fourth side edge;

the second low-frequency antenna is used for supporting a second frequency band and comprises a second radiating body and a second feed source, wherein at least part of the second radiating body is arranged on the second side edge and is provided with a second grounding end and a second free end, the second grounding end is grounded, a second feed point electrically connected with the second feed source is arranged between the second grounding end and the second free end, and the second free end points to the third side edge;

the third low-frequency antenna is used for supporting a third frequency band and comprises a third radiating body and a third feed source, wherein at least part of the third radiating body is arranged on the third side edge and is provided with a third grounding end and a third free end, the third grounding end is grounded, and a third feed point electrically connected with the third feed source is arranged between the third grounding end and the third free end; the third free end is directed to the fourth side; and

the fourth low-frequency antenna for supporting a fourth frequency band comprises a fourth radiator and a fourth feed source, wherein the fourth radiator is arranged on the fourth side edge and is provided with a fourth grounding end and a fourth free end, the fourth grounding end is grounded, and a fourth feeding point electrically connected with the fourth feed source is arranged between the fourth grounding end and the fourth free end; the fourth self-contained end points to the third side;

the third radiator is closer to the second side than the first radiator in a direction parallel to the first side, and the fourth radiator is closer to the third side than the second radiator in a direction parallel to the second side.

According to the electronic equipment comprising the four low-frequency antennas, the four low-frequency antennas form an ultra-low ECC four-low-frequency antenna system, ECC between LB antennas is greatly reduced, ECC of the MIMO antennas is reduced, throughput of the MIMO system is improved, channel capacity is improved, and data transmission speed is improved. Moreover, the 4 LB antennas are distributed on four sides of the electronic equipment, and at least 2 LB antennas are kept in a non-holding state for various handheld states of the electronic equipment, so that the electronic equipment keeps good communication performance, and user experience is improved.

An embodiment of the present application further provides an electronic device, including:

the first side edge, the second side edge, the third side edge and the fourth side edge are connected in sequence, wherein the first side edge is opposite to the third side edge, and the second side edge is opposite to the fourth side edge;

a first low-frequency antenna disposed on the first side and forming a first radiation opening, wherein the first radiation opening faces the fourth side;

a second low frequency antenna disposed on the second side edge and forming a second radiation opening, the second radiation opening facing the third side edge;

a third low-frequency antenna disposed on the third side edge and forming a third radiation opening, wherein the third radiation opening faces the fourth side edge; and

a fourth low-frequency antenna disposed on the fourth side and forming a fourth radiation opening, wherein the fourth radiation opening faces the third side;

wherein, in a direction parallel to the first side, the third low frequency antenna is closer to the second side than the low frequency antenna, and in a direction parallel to the second side, the fourth low frequency antenna is closer to the third side than the second low frequency antenna.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.

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

FIG. 2 is an exploded view of the electronic device shown in FIG. 1;

fig. 3 is a schematic structural diagram of a first embodiment of an electronic device in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a second embodiment of an electronic device in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a third embodiment of an electronic device in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a fourth embodiment of an electronic device in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a fifth embodiment of an electronic device in an embodiment of the present application;

fig. 8 is a schematic frequency response curve of four low-frequency antennas of an antenna assembly included in an electronic device according to a fifth embodiment of the present application;

FIG. 9 is a schematic diagram illustrating an ECC curve between four low frequency antennas of an antenna assembly included in an electronic device according to a fifth embodiment of the present application;

fig. 10 is a schematic structural diagram illustrating a sixth embodiment of an antenna assembly included in an electronic device in an embodiment of the present application;

fig. 11 is a schematic structural diagram of a seventh embodiment of an antenna assembly included in an electronic device in an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

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 herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It is to be understood that the terms "first", "second", and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of technical features being indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.

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," or "having," and the like, 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.

Fig. 1 is a schematic structural diagram of an electronic device 1000 according to an embodiment of the present disclosure. The electronic device 1000 may be a phone, a television, a tablet computer, a mobile phone, a camera, a personal computer, a notebook computer, an in-vehicle device, an earphone, a watch, a wearable device, a base station, an in-vehicle radar, a Customer Premise Equipment (CPE), and the like, which are capable of transceiving electromagnetic wave signals. Taking the electronic device 1000 as a mobile phone as an example, for convenience of description, the electronic device 1000 is defined with reference to a first viewing angle, a width direction of the electronic device 1000 is defined as an X direction, a length direction of the electronic device 1000 is defined as a Y direction, and a thickness direction of the electronic device 1000 is defined as a Z direction. The direction indicated by the arrow is the forward direction. The electronic device 1000 includes a first side 401 and a second side 402 disposed opposite to each other, and a third side 403 and a fourth side 404 connected between the first side 401 and the second side 402. The first side 401 and the third side 403 are long sides in the Y direction, and the second side 402 and the fourth side 404 are short sides in the X direction. In fig. 1, the electronic device 1000 is illustrated as a rectangle, but in other embodiments, the electronic device 1000 may have a trapezoidal, rhombic, or other shape.

Fig. 2 is an exploded schematic view of the electronic device provided in fig. 1, and referring to fig. 1 and fig. 2, an electronic device 1000 provided in the embodiment of the present application includes a display screen 300 and a housing 500 covering the display screen 300. The housing 500 includes a middle frame 501 and a rear cover 502 which are fitted to each other. The rear cover 502 is located on a side of the middle frame 501 facing away from the display screen 300. The middle frame 501 includes a middle plate and a frame surrounding the middle plate. The middle plate is used for mounting electronic components such as the main board 200, the battery 400 and the like. The edge, the frame and the back cover 502 of the display screen 300 are connected in sequence. Wherein, the frame and the rear cover 502 can be integrally formed. The electronic device 1000 also includes an antenna assembly 600. At least a portion of the antenna assembly 600 is disposed on the motherboard 200 of the electronic device 1000 or electrically connected to the motherboard 200 of the electronic device 1000. The antenna assembly 100 is used for transceiving radio frequency signals to implement a communication function of the electronic device 1000. It should be noted that the arrangement position of the antenna assembly 100 in fig. 2 is only an illustrative example, and is not used to limit the arrangement position of the antenna assembly in the electronic device provided in the embodiment of the present application, and is not used to limit the protection scope of the present application.

The MIMO system relies on the independence between received signals to realize spatial diversity, a lower Envelope Correlation Coefficient (ECC) reflects the low Correlation between signals, and the lower the ECC, the better the channel capacity, and the faster the data transmission speed. In order to reduce ECC between LB antennas, with reference to fig. 1 and fig. 2, an embodiment of the present application provides an electronic device, as shown in fig. 3, where the electronic device 1000 at least includes: the display panel comprises a first side 401, a second side 402, a third side 403 and a fourth side 404 which are sequentially connected, wherein the first side 401 is opposite to the third side 403, and the second side 402 is opposite to the fourth side 404; the electronic device 1000 further comprises:

the first low-frequency antenna 10 is used for supporting a first frequency band, the first low-frequency antenna 10 includes a first radiator 100 and a first feed source S1, the first radiator 100 is disposed on the first side 401, the first radiator 100 has a first ground terminal 1012 and a first free end 1011, the first ground terminal 1012 is grounded, and a first feed point electrically connected to the first feed source S1 is disposed between the first ground terminal 1012 and the first free end 1011; the first free end 1011 points towards the fourth side 404;

the second low-frequency antenna 20 is configured to support a second frequency band, the second low-frequency antenna 20 includes a second radiator 200 and a second feed S2, at least a portion of the second radiator 200 is disposed on the second side 402, the second radiator 200 has a second ground terminal 2012 and a second free end 2011, the second ground terminal 2012 is grounded, and a second feed point electrically connected to the second feed S2 is disposed between the second ground terminal 2012 and the second free end 2011; the second free end 2011 points toward the third side edge 403;

the third low-frequency antenna 30 is configured to support a third frequency band, the third low-frequency antenna 30 includes a third radiator 300 and a third feed S3, at least a portion of the third radiator 300 is disposed on the third side 403, the third radiator 300 has a third ground terminal 3012 and a third free terminal 3011, the third ground terminal 3012 is grounded, and a third feed point electrically connected to the third feed S3 is disposed between the third ground terminal 3012 and the third free terminal 3011; the third free end 3011 points to the fourth side 404;

the fourth low-frequency antenna 40 is configured to support a fourth frequency band, the fourth low-frequency antenna 40 includes a fourth radiator 400 and a fourth feed S4, the fourth radiator 400 is disposed on the fourth side 404, the fourth radiator 400 has a fourth ground terminal 4012 and a fourth free terminal 4011, the fourth ground terminal 4012 is grounded, and a fourth feeding point electrically connected to the fourth feed S4 is disposed between the fourth ground terminal 4012 and the fourth free terminal 4011; the fourth free end 4011 points towards the third side edge 403;

the third radiator 300 is closer to the second side 402 than the first radiator 100 in a direction parallel to the first side 401, and the fourth radiator 400 is closer to the third side 403 than the second radiator 200 in a direction parallel to the second side 402.

According to the electronic equipment provided by the embodiment of the application, the four low-frequency antennas included by the power station equipment form an ultralow ECC four-low-frequency antenna system, so that ECC among LB antennas is greatly reduced, ECC of MIMO antennas is reduced, and throughput rate of the MIMO system is improved, so that channel capacity is improved, and data transmission speed is improved. Moreover, the 4 LB antennas are distributed on four sides of the electronic device, and at least 2 LB antennas are kept in a non-holding state for various handheld states of the electronic device, so that the electronic device keeps good communication performance, and user experience is improved.

In one embodiment, as shown in fig. 3, in the present embodiment, the first low frequency antenna 10 is located at a first side 401 of the electronic device 1000, the second low frequency antenna 20 is located at a second side 402 of the electronic device 1000, the third low frequency antenna 30 is located at a third side 403 of the electronic device 1000, and the fourth low frequency antenna 40 is located at a fourth side 404 of the electronic device 1000. As shown in fig. 3, the first free end 1011 of the first low-frequency antenna 10 is directed to the fourth side 404 where the fourth low-frequency antenna 40 is located, the second free end 2011 of the second low-frequency antenna 20 is directed to the third side 403 where the third low-frequency antenna 30 is located, the third free end 3011 of the third low-frequency antenna 30 is directed to the fourth side 404 where the fourth low-frequency antenna 40 is located, and the fourth free end 4011 of the fourth low-frequency antenna 40 is directed to the third side 403 where the third low-frequency antenna 30 is located. It should be noted that, this is only a few examples of the positional relationship of the four low-frequency antennas, and is not intended to limit the positional relationship of the four low-frequency antennas, nor the scope of protection of the present application.

In an illustrative example, as shown in fig. 3, the first low frequency antenna 10 is located at about the middle of the first side 401 of the electronic device 1000, the second low frequency antenna 20 is located at the second side 402 of the electronic device 1000 near the corner where the second side 402 connects to the first side 401, the third low frequency antenna 30 is located at the third side 403 of the electronic device 1000 near the corner where the third side 403 connects to the second side 402, and the fourth low frequency antenna 40 is located at the fourth side 404 of the electronic device 1000 near the corner where the fourth side 404 connects to the third side 403.

In an embodiment, referring to fig. 1, fig. 4 is a mirror image architecture of the X-axis direction of the antenna architecture layout shown in fig. 3, and as shown in fig. 4, in this embodiment, the first low-frequency antenna 10 is located on a third side 403 of the electronic device 1000, the second low-frequency antenna 20 is located on a second side 402 of the electronic device 1000, the third low-frequency antenna 30 is located on a first side 401 of the electronic device 1000, and the fourth low-frequency antenna 40 is located on a fourth side 404 of the electronic device 1000. As shown in fig. 4, the first free end 1011 of the first low-frequency antenna 10 is directed to the fourth side 404 on which the fourth low-frequency antenna 40 is located, the second free end 2011 of the second low-frequency antenna 20 is directed to the third side 403 on which the third low-frequency antenna 30 is located, the third free end 3011 of the third low-frequency antenna 30 is directed to the fourth side 404 on which the fourth low-frequency antenna 40 is located, and the fourth free end 4011 of the fourth low-frequency antenna 40 is directed to the third side 403 on which the third low-frequency antenna 30 is located. It should be noted that, this is only a few examples of the positional relationship of the four low-frequency antennas, and is not intended to limit the positional relationship of the four low-frequency antennas, nor the scope of protection of the present application.

In an exemplary embodiment, as shown in fig. 5, the second ground 2012 of the second low frequency antenna 20 is located at the first side 401. That is, the second lf antenna 20 is located at a corner where the first side 401 and the second side 402 are connected, as shown in fig. 5, a portion of the second lf antenna 20 is located at the second side 402, another portion of the second lf antenna 20 is located at the first side 401, and the second ground 2012 of the second lf antenna 20 is located at the first side 401 where the first lf antenna 10 is located, that is, the second ground 2012 of the second lf antenna 20 is close to the first ground 1012 of the first lf antenna 10, and the second ground 2012 of the second lf antenna 20 is far from the first free end 1011 of the first lf antenna 10. In this way, for the case that there are two LB antenna radiators on the same side, as shown in fig. 5, the first low-frequency antenna 10 and a portion of the second low-frequency antenna 20 disposed on the first side 401 are not opposite to each other, and the ground ends of the first low-frequency antenna 10 and the second low-frequency antenna 20 are opposite to each other, a current path shown by a thick dotted line in fig. 5 is formed on the second low-frequency antenna 20, that is, the second low-frequency antenna 20 is used to generate a 1/8-1/4 wavelength mode from the second ground end 2012 (i.e., GND 2) to the second free end 2011, so that the spatial isolation between the first low-frequency antenna 10 and the second low-frequency antenna 20 is enhanced, and the ECC between the first low-frequency antenna 10 and the second low-frequency antenna 20 is improved.

In an illustrative example, as shown in fig. 6, the third ground terminal 3012 of the third low frequency antenna 30 is located on the second side 402 of the second low frequency antenna 20. That is, the third low frequency antenna 30 is located at the corner where the second side 402 and the third side 403 are connected, as shown in fig. 5, a part of the third low frequency antenna 30 is located at the third side 403, another part of the third low frequency antenna 30 is located at the second side 402, and the third ground terminal 3012 of the third low frequency antenna 30 is located at the second side 402 where the second low frequency antenna 20 is located, that is, the third ground terminal 3012 of the third low frequency antenna 30 is close to the first free end 2011 of the second low frequency antenna 20, and the third ground terminal 3012 of the third low frequency antenna 30 is far from the second ground terminal 2012 of the second low frequency antenna 20.

In an exemplary embodiment, as shown in fig. 7, the second ground terminal 2012 of the second low frequency antenna 20 is located at the first side 401 where the first low frequency antenna 10 is located, and the third ground terminal 3012 of the third low frequency antenna 30 is located at the second side 402 where the second low frequency antenna 20 is located.

It should be noted that, the antenna architecture layouts shown in fig. 5, fig. 6, and fig. 7 may also adopt a mirror image architecture in the X-axis direction, and those skilled in the art can easily understand the relationship between fig. 4 and fig. 3 according to the embodiments of the present application, and details are not repeated here.

In an exemplary example, the free ends (or referred to as openings) of the four LB antennas included in the electronic device of the present application are not arranged opposite to each other, and if the free ends (or referred to as openings) are arranged opposite to each other (the apertures perpendicular to each other are also arranged opposite to each other), it is required to ensure that the distance between the LB antennas arranged opposite to each other at the free ends (or referred to as openings) is sufficiently far, such as the third low frequency antenna 30 and the fourth low frequency antenna 40 in fig. 3 to 7, and although the openings are arranged opposite to each other, in the embodiment of the present application, by ensuring that the distance between the third low frequency antenna 30 and the fourth low frequency antenna 40 is sufficiently far, such as the distance is greater than a preset distance threshold, the ECC can also be satisfied. However, if the opening of the fourth low frequency antenna 40 is directed to the first side 401 of the electronic device, the distance between the fourth low frequency antenna 40 and the first low frequency antenna 10 is too close to affect the ECC.

In an illustrative example, as shown in fig. 3, 5-7, fourth low frequency antenna 40 is disposed proximate to the junction of fourth side 404 and third side 403. In an illustrative example, as shown in fig. 4, the fourth low frequency antenna 40 is disposed near the junction of the fourth side 404 and the first side 401.

In an exemplary embodiment, the first ground terminal 1012 of the first radiator 100 may be grounded by any one of the following methods: the direct grounding is carried out, or the grounding is carried out after a small inductor with low impedance such as a 1nH inductor is connected in series, or the grounding is carried out after a large capacitor such as a 100pF capacitor is connected in series.

In an exemplary embodiment, the second ground 2012 of the second radiator 200 may be grounded by any one of the following methods: the direct grounding is carried out, or the grounding is carried out after a small inductor with low impedance such as a 1nH inductor is connected in series, or the grounding is carried out after a large capacitor such as a 100pF capacitor is connected in series. The grounding of the second ground 2012 (i.e., GND 2) of the second low-frequency antenna 20 makes it form a current path as shown by the thick dashed line in fig. 5, that is, a 1/8-1/4 wavelength pattern from the second ground 2012 (i.e., GND 2) to the second free end 2011 is formed, so as to further improve the ECC between the first low-frequency antenna 10 and the second low-frequency antenna.

In an exemplary embodiment, the third ground terminal 3012 of the third radiator 300 may be grounded by any one of the following methods: the direct grounding is carried out, or the grounding is carried out after a small inductor with low impedance such as a 1nH inductor is connected in series, or the grounding is carried out after a large capacitor such as a 100pF capacitor is connected in series.

In an exemplary embodiment, the second ground 4012 of the fourth radiator 400 can be grounded by any one of the following methods: the direct grounding is carried out, or the grounding is carried out after a small inductor with low impedance such as a 1nH inductor is connected in series, or the grounding is carried out after a large capacitor such as a 100pF capacitor is connected in series.

In an exemplary example, the first feed S1 may be electrically connected to any position between the first ground terminal 1012 and the first free end 1011 of the first radiator 100, that is, the first feeding point may be located at any position between the first ground terminal 1012 and the first free end 1011 of the first radiator 100, such as: the first feed point is close to the first ground 1012, and a low impedance feed mode may be used; the following steps are repeated: the first feeding point is close to the first free end 1011, and a high impedance feeding mode can be adopted, as well as: the first feeding point is located at any other position between the first ground terminal 1012 and the first free end 1011 of the first radiator 100, and can excite the 1/8-1/4 wavelength mode from the first ground terminal 1012 to the first free end 1011, that is, the first low-frequency antenna 10 is used for generating the 1/8-1/4 wavelength mode from the first ground terminal 1012 to the first free end 1011. The location of the actual feed may be determined from the stacking of the motherboard and the platelet of the electronic device 1000.

In an exemplary example, the second feed S2 may be electrically connected to any position between the second ground 2012 and the second free end 2011 of the second radiator 200, that is, the second feeding point may be located at any position between the second ground 2012 and the second free end 2011 of the second radiator 200, such as: the second feeding point is close to the second ground 2012, and a low impedance feeding mode can be adopted; the following steps are repeated: the second feeding point is close to the second free end 2011, and a high impedance feeding mode can be adopted, as follows: the second feeding point is located at any other position between the second ground terminal 2012 and the second free terminal 2011 of the second radiator 200, and can excite the 1/8-1/4 wavelength mode from the second ground terminal 2012 to the second free terminal 2011, that is, the second low frequency antenna 20 is configured to generate the 1/8-1/4 wavelength mode from the second ground terminal 2012 to the second free terminal 2011. The location of the actual feed may be determined from the stacking of the motherboard and the platelet of the electronic device 1000.

In an exemplary example, the third feed S3 may be electrically connected to any position between the third ground terminal 3012 and the third free terminal 3011 of the third radiator 300, that is, the third feeding point may be located at any position between the third ground terminal 3012 and the third free terminal 3011 of the third radiator 300, such as: the third feeding point is close to the third ground terminal 3012, and a low impedance feeding mode can be adopted; the following steps are repeated: the third feeding point is close to the third free end 3011, and a high impedance feeding mode can be adopted, as another example: the third feeding point is located at any other position between the third ground terminal 3012 and the third free terminal 3011 of the third radiator 300, and can excite the 1/8-1/4 wavelength mode from the third ground terminal 3012 to the third free terminal 3011, that is, the third low frequency antenna 30 is used to generate the 1/8-1/4 wavelength mode from the third ground terminal 3012 to the third free terminal 3011. The location of the actual feed may be determined from the stacking of the motherboard and the platelet of the electronic device 1000.

In an exemplary example, the fourth feed S4 may be electrically connected to any position between the fourth ground terminal 4012 and the fourth free terminal 4011 of the fourth radiator 400, that is, the fourth feeding point may be located at any position between the fourth ground terminal 4012 and the fourth free terminal 4011 of the fourth radiator 400, such as: the fourth feeding point is close to the fourth ground 4012, and a low impedance feeding mode can be adopted, as follows: the fourth feeding point is close to the fourth free end 4011, and a high impedance feeding mode can be adopted, as follows: the fourth feeding point is located at any other position between the fourth grounding terminal 4012 and the fourth free terminal 4011 of the fourth radiator 400, and can excite 1/8 to 1/4 wavelength mode from the fourth grounding terminal 4012 to the fourth free terminal 4011, that is, the fourth low frequency antenna 40 is used to generate 1/8 to 1/4 wavelength mode from the fourth grounding terminal 4012 to the fourth free terminal 4011. The location of the actual feed may be determined from the stacking of the motherboard and the platelet of the electronic device 1000.

In an exemplary embodiment, the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band may be the same or different, or may be partially the same and partially different. In one embodiment, each frequency band may be a 4G low frequency band or a 5G low frequency band. In one embodiment, the first frequency band, the second frequency band, the third frequency band and the fourth frequency band are N28 frequency band, N71 frequency band, N8 frequency band, and the like.

In an exemplary example, the electronic device provided in the embodiment of the present application includes four low-frequency antennas, where the four low-frequency antennas may form an endec combination of LB + LB, such as a B20+ N28 combination, a B20+ N8 combination, a B28+ N8 combination, and the like, where two antennas operate in an LTE frequency band, and the other two antennas operate in an NR frequency band. Wherein ENDC is an abbreviation of EUTRA NR Dual-Connectivity, E represents E-UTRA, belongs to the air interface of 3GPP LTE, and is the eighth edition of 3 GPP; n represents N Radio5G; d denotes LTE and 5G dual connectivity. Endec can be understood as the mutual compatibility of 4G and 5G dual connections.

In an exemplary embodiment, an electronic device provided in an embodiment of the present application includes four low-frequency antennas, two low-frequency antennas operate in a first NR frequency band, and the other two low-frequency antennas operate in a second NR frequency band. Taking the application to a 5G dual card duplex as an example, the first NR frequency band is an N8 frequency band, and the second NR frequency band is an N28 frequency band, that is, two of the low frequency antennas operate in the N8 frequency band, and the other two operate in the N28 frequency band.

Fig. 8 is a schematic diagram of frequency response curves of four low-frequency antennas of an electronic device in a fifth embodiment of the present application, as shown in fig. 8, an abscissa represents frequency (in GHz), and an ordinate represents return loss characteristics (in dB), in this embodiment, taking an example that a first frequency band, a second frequency band, a third frequency band, and a fourth frequency band are N28 frequency bands, curves 121 to 124 are reflection coefficient curves of a first low-frequency antenna 10, a second low-frequency antenna 20, a third low-frequency antenna 30, and a fourth low-frequency antenna 40, four curves are substantially overlapped, curves shown by dashed lines represent isolation curves between the four low-frequency antennas, and as can be seen from fig. 8, isolation between the four low-frequency antennas is less than-13 dB, that is, the electronic device provided in the embodiment of the present application includes four low-frequency antennas that have excellent spatial correlation. As shown in fig. 9, the abscissa indicates frequency (in GHz), the ordinate indicates ECC, in fig. 9, a curve 912 indicates ECC between ANT0 and ANT1, a curve 913 indicates ECC between ANT0 and ANT2, a curve 914 indicates ECC between ANT0 and ANT3, a curve 923 indicates ECC between ANT1 and ANT2, a curve 924 indicates ECC between ANT1 and ANT3, and a curve 934 indicates ECC between ANT2 and ANT3, and as can be seen from fig. 9, in the antenna assembly included in the electronic device according to the embodiment of the present application, ECC between ANT0 and ANT3 and ECC between ANT1 and ANT3 are less than 0.5 in the entire low-frequency band. Here, ANT0 corresponds to the first low frequency antenna 10 in fig. 7, ANT1 corresponds to the second low frequency antenna 20 in fig. 7, ANT2 corresponds to the fourth low frequency antenna 40 in fig. 7, and ANT4 corresponds to the third low frequency antenna 30 in fig. 7. And in the N28 receiving frequency band (758 MHz-803 MHz), the ECC full frequency band among the four low-frequency antennas is less than 0.5. Even in the LB band above 758MHz, e.g., N28, N5, N8, B28, B20, B5, B8 bands, the overall band has a low ECC.

The four low-frequency antennas of the electronic device are an ultra-low-frequency ECC (error correction code) four-low-frequency antenna system, so that the ECC among LB (Lucy correction code) antennas is greatly reduced, the ECC of the MIMO (multiple input multiple output) antennas is reduced, and the throughput rate of the MIMO system is improved, thereby improving the channel capacity and improving the data transmission speed. Moreover, the 4 LB antennas are distributed on four sides of the electronic device, and at least 2 LB antennas are kept in a non-holding state for various handheld states of the electronic device, so that the electronic device keeps good communication performance, and user experience is improved.

In an exemplary embodiment, the electronic device provided in the embodiment of the present application may further include a GPS-L5 band antenna 50. As shown in fig. 10, the GPS-L5 band antenna 50 may include a fifth radiator 500, the fifth radiator 500 having a fifth ground 5012 and a fifth free end 5011, the fifth ground 5012 of the fifth radiator 500 being grounded, and a fifth feeding point electrically connected to the fifth feed S5 being disposed between the fifth ground 5012 of the fifth radiator 500 and the fifth free end 5011 of the fifth radiator 500; the fifth ground 5012 of the fifth radiator 500 is located at the first side 401 where the first low frequency antenna 10 is located, and the fifth free end 5011 of the fifth radiator 500 is located at the fourth side 404 where the fourth low frequency antenna 40 is located, that is, the GPS-L5 band antenna 50 is located at a corner where the fourth side 404 and the first side 401 are connected. It should be noted that, the antenna architecture layout shown in fig. 10 may also adopt a mirror image architecture in the X-axis direction, and those skilled in the art can easily understand the relationship between fig. 4 and fig. 3 according to the embodiment of the present application, and details are not described here again.

In an exemplary example, the electronic device provided in the embodiment of the present application may further include a GPS-L5 band antenna 50 disposed at a side of the third low frequency antenna 30. As shown in fig. 11, the GPS-L5 band antenna 50 may include a fifth radiator 500, the fifth radiator 500 having a fifth grounded end 5012 and a fifth free end 5011, the fifth grounded end 5012 of the fifth radiator 500 being grounded, and a fifth feeding point electrically connected to the fifth feed S5 being disposed between the fifth grounded end 5012 of the fifth radiator 500 and the fifth free end 5011 of the fifth radiator 500; the GPS-L5 band antenna 50 and the third low-frequency antenna 30 are located on the same side of the electronic device 1000 (e.g., the third side 403 in this embodiment), the fifth free end 5011 of the fifth radiator 500 points to the side where the fourth low-frequency antenna 40 is located (e.g., the fourth side 404 in this embodiment), the fifth grounded end 5012 of the fifth radiator 500 is close to the third free end 3011 of the third low-frequency antenna 30, and the fifth free end 5011 of the fifth radiator 500 is far from the third free end 3011 of the third low-frequency antenna 30. It should be noted that, the antenna architecture layout shown in fig. 11 may also adopt a mirror image architecture in the X-axis direction, and those skilled in the art can easily understand the relationship between fig. 4 and fig. 3 according to the embodiment of the present application, and details are not described here.

The frequency of the GPS-L5 frequency band is low, close to low frequency, and the 4-branch low frequency antenna and the GPS-L5 antenna coexist through the embodiments of the electronic device shown in fig. 10 and 11.

An embodiment of the present application further provides an electronic device, which at least includes: the display panel comprises a first side 401, a second side 402, a third side 403 and a fourth side 404 which are sequentially connected, wherein the first side 401 is opposite to the third side 403, and the second side 402 is opposite to the fourth side 404; the electronic device 1000 further comprises:

a first low-frequency antenna 10 disposed on the first side 401 and forming a first radiation opening, wherein the first radiation opening faces the fourth side 404;

a second low-frequency antenna 20 disposed on the second side 402 and forming a second radiation opening, wherein the second radiation opening faces the third side 403;

a third low-frequency antenna 30 disposed on the third side 403 and forming a third radiation opening, wherein the third radiation opening faces the fourth side 404; and the number of the first and second groups,

a fourth low-frequency antenna 40 disposed on the fourth side 404 and forming a fourth radiation opening, wherein the fourth radiation opening faces the third side 401;

In an exemplary embodiment, the radiation opening is also referred to as the radiation aperture of the antenna, and the direction of the radiation opening is the same as the orientation of the free end of the radiator. In one embodiment, the first radiation opening is oriented in the same direction as the first free end 1011. In one embodiment, the second radiation opening is oriented in the same direction as the second free end 2011. In one embodiment, the third radiation opening is oriented in the same direction as the third free end 3011. In one embodiment, the direction of the fourth radiation opening is the same as the direction of the fourth free end 4011.

Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims

1. An electronic device, comprising:

the first low-frequency antenna used for supporting the first frequency band comprises a first radiator and a first feed source, wherein the first radiator is arranged on the first side edge and is provided with a first grounding end and a first free end, the first grounding end is grounded, a first feed point electrically connected with the first feed source is arranged between the first grounding end and the first free end, and the first free end points to the fourth side edge;

the second low-frequency antenna used for supporting a second frequency band comprises a second radiator and a second feed source, wherein at least part of the second radiator is arranged on the second side edge and is provided with a second grounding end and a second free end, the second grounding end is grounded, a second feeding point electrically connected with the second feed source is arranged between the second grounding end and the second free end, and the second free end points to the third side edge;

the third low-frequency antenna used for supporting a third frequency band comprises a third radiator and a third feed source, wherein at least part of the third radiator is arranged on the third side edge and is provided with a third grounding end and a third free end, the third grounding end is grounded, and a third feed point electrically connected with the third feed source is arranged between the third grounding end and the third free end; the third free end is directed to the fourth side; and

2. The electronic device of claim 1, wherein the second ground is located at a side of the first low frequency antenna.

3. The electronic device of claim 2, wherein a portion of the second low frequency antenna is disposed on the second side, another portion of the second low frequency antenna is disposed on the first side; the second grounding end is positioned at the first side edge;

the second low-frequency antenna is used for generating a 1/8-1/4 wavelength mode from the second grounding end to the second free end.

4. The electronic device of claim 1, wherein a distance between the third low frequency antenna and the fourth low frequency antenna is greater than a preset distance threshold.

5. The electronic device of claim 1, wherein the third ground is located to the side of the second low frequency antenna.

6. The electronic device of claim 1, wherein the fourth low-frequency antenna is disposed near a connection between a side where the fourth low-frequency antenna is located and a side where the third low-frequency antenna is located.

7. The electronic device of claim 1, 2, or 5, further comprising: a GPS-L5 frequency band antenna;

the GPS-L5 frequency band antenna comprises a fifth radiator, wherein the fifth radiator is provided with a fifth grounding end and a fifth free end, the fifth grounding end is grounded, and a fifth feeding point electrically connected with a fifth feed source is arranged between the fifth grounding end and the fifth free end;

the fifth ground end is located at the first side edge, and the fifth free end is located at the fourth side edge.

8. The electronic device of claim 1, 2, or 5, further comprising: a GPS-L5 frequency band antenna arranged on the third side edge;

the GPS-L5 frequency band antenna comprises a fifth radiator, wherein the fifth radiator is provided with a fifth grounding end and a fifth free end, the fifth grounding end is grounded, and a fifth feeding point electrically connected with a fifth feed source is arranged between the fifth grounding end and the fifth free end; the fifth free end is directed to the fourth side;

the fifth grounded end is close to the third free end, and the fifth free end is far away from the third free end.

9. The electronic device of claim 1 or 2, wherein the first ground, the second ground, the third ground, and the fourth ground are grounded in any one of the following manners:

the direct grounding is carried out, or the grounding is carried out after a small inductor with low impedance is connected in series, or the grounding is carried out after a large capacitor is connected in series.

10. The electronic device of claim 1, 2, or 5,

the first feeding point adopts any one of the following arrangement modes: a low impedance feed mode is adopted near the first grounding end; or, close to the first free end, a high impedance feeding mode is adopted;

the second feeding point adopts any one of the following arrangement modes: a low impedance feed mode is adopted near the second grounding end; or, a high impedance feeding mode is adopted near the second free end;

the third feeding point adopts any one of the following arrangement modes: a low impedance feed mode is adopted near the third grounding end; or, a high impedance feeding mode is adopted near the third free end;

the fourth feeding point adopts any one of the following arrangement modes: a low impedance feed mode is adopted near the fourth grounding end; or, a high impedance feeding mode is adopted near the fourth free end.

11. The electronic device of claim 10, wherein the first low frequency antenna is configured to generate 1/8 to 1/4 wavelength modes from the first ground terminal to the first free terminal;

the second low-frequency antenna is used for generating a 1/8-1/4 wavelength mode from the second grounding end to the second free end;

the third low-frequency antenna is used for generating a 1/8-1/4 wavelength mode from the third grounding end to the third free end;

the fourth low-frequency antenna is used for generating a 1/8-1/4 wavelength mode from the fourth grounding end to the fourth free end.

12. The electronic device of claim 1, wherein the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band are the same, or different, or partially the same and partially different.

13. The electronic device of claim 12, wherein any one or any combination of the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band is a 4G low frequency band or a 5G low frequency band.

14. The electronic device of claim 12, wherein the first, second, third, and fourth bands are N28 bands or N71 bands or N8 bands.

15. The electronic device of claim 1, wherein the first low frequency antenna, the second low frequency antenna, the third low frequency antenna, and the fourth low frequency antenna form an endec combination of LB + LB, with two low frequency antennas operating in the LTE band and two other low frequency antennas operating in the NR band.

16. The electronic device of claim 1, wherein two of the first, second, third, and fourth low frequency antennas operate in a first NR frequency band and two other low frequency antennas operate in a second NR frequency band.

17. The electronic device of claim 16, wherein the first NR frequency band is an N8 frequency band and the second NR frequency band is an N28 frequency band.

18. An electronic device, comprising:

the first low-frequency antenna is arranged on the first side edge and forms a first radiation opening, and the first radiation opening faces the fourth side edge;

the second low-frequency antenna is arranged on the second side edge and forms a second radiation opening, and the second radiation opening faces the third side edge;

a fourth low-frequency antenna disposed on the fourth side edge and forming a fourth radiation opening, wherein the fourth radiation opening faces the third side edge;