An electronic device

Abstract

The application provides an electronic device, wherein a metal radiator is used to realize a first antenna and a second antenna, the first antenna and the second antenna are in the same target frequency band; a first feeding end feeds a radiation signal with a target frequency band from a first end and a second end of the metal radiator to form a first target radiation part; and a second feeding end feeds a radiation signal with a target frequency band from the first end and the second end of the metal radiator to form a second target radiation part, the second target radiation part is different from the first target radiation part.

Description

Technical Field

[0001] This application relates primarily to the field of communication technology, and more specifically to an electronic device. Background Technology

[0002] With the development and application of 5G networks, in order to improve the transmission rate, electronic devices that support 5G communication usually deploy MIMO (Multiple-Input Multiple-Output) antennas, that is, deploy multiple antennas in electronic devices to enable them to support multiple frequency bands and meet various communication needs.

[0003] However, electronic devices have limited internal space and need to integrate necessary components such as sensors, leaving very little space for antenna deployment. This makes it difficult to meet the spatial distance requirements of MIMO antenna technology for different antennas, causing multiple antennas to interfere with each other, reducing antenna performance, and consequently affecting the communication quality of electronic devices. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides the following technical solutions:

[0005] An electronic device, the electronic device comprising:

[0006] A metal radiator, which is used to realize a first antenna and a second antenna, wherein the first antenna and the second antenna are in the same target frequency band;

[0007] The first feed terminal receives the radiation signal of the target frequency band fed from the first end and the second end of the metal radiator to form the first target radiation portion;

[0008] The second feed terminal feeds the radiation signal from the first terminal and the second terminal to form a second target radiation portion, wherein the second target radiation portion and the first target radiation portion are different parts of the metal radiator.

[0009] Optionally, the radiation signals fed into the first and second terminals by the first feed terminal are orthogonal to the radiation signals fed into the first and second terminals by the second feed terminal.

[0010] Optionally, the radiation signal fed into the second feed terminal from the first terminal is orthogonal to the radiation signal fed into the second feed terminal from the second terminal.

[0011] Optionally, the electronic device further includes:

[0012] An isolation circuit is provided to ensure that the first antenna and the second antenna do not interfere with each other when they are operating simultaneously in the target frequency band.

[0013] Optionally, the isolation circuit is located between the second feed terminal and the second terminal.

[0014] Optionally, the isolation circuit is a microstrip line, and the length of the microstrip line is an odd multiple of half the wavelength corresponding to the target frequency band.

[0015] Optionally, the metal radiator is a centrally symmetric radiator, and the metal radiator includes at least a first part and a second part intersecting with the first part.

[0016] Optionally, the electronic device further includes:

[0017] An adjustment circuit is provided for the first antenna and / or the second antenna to adjust the resonant frequencies of the first antenna and the second antenna so that they can operate simultaneously in the target frequency band.

[0018] Optionally, the adjustment circuit includes:

[0019] A first adjustment unit is located between the first feed terminal and the first terminal; and / or,

[0020] A second adjustment unit is located between the first power supply terminal and the second terminal; and / or,

[0021] A third adjustment unit is located between the second power supply terminal and the first terminal; and / or,

[0022] The fourth adjustment unit is located between the second power supply terminal and the second terminal.

[0023] Optionally, if the metal radiator is a non-centrosymmetric radiator, the parameter adjustment directions between the first adjustment unit and the second adjustment unit are opposite, and the parameter adjustment directions between the third adjustment unit and the fourth adjustment unit are opposite, so that the first antenna and the second antenna operate simultaneously at the target frequency band. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of an optional example of the electronic device proposed in this application;

[0026] Figure 2 A schematic diagram illustrating the structure of yet another alternative example of the electronic device proposed in this application;

[0027] Figure 3a A schematic diagram illustrating the structure of yet another alternative example of the electronic device proposed in this application;

[0028] Figure 3b A schematic diagram illustrating the structure of yet another alternative example of the electronic device proposed in this application;

[0029] Figure 4 A schematic diagram illustrating the structure of yet another alternative example of the electronic device proposed in this application;

[0030] Figure 5 A schematic diagram illustrating the structure of yet another alternative example of the electronic device proposed in this application;

[0031] Figure 6a A schematic diagram illustrating the structure of yet another alternative example of the electronic device proposed in this application;

[0032] Figure 6b This is a schematic diagram of another alternative example of the electronic device proposed in this application. Detailed Implementation

[0033] Regarding the technical problems described in the background section, according to the technical requirements of MIMO antennas, grounding and slotting can be carried out on a large scale on the metal frame that serves as the radiator. However, this approach will affect the appearance of the entire device. Due to the limitations of the device structure, it may not be able to meet the appearance design requirements of symmetrical slotting. Furthermore, multiple slots will greatly reduce the mechanical strength of the metal frame, and grounding on the metal frame on a large scale will further compress the clearance area of ​​the antenna, affecting the layout of the MIMO antenna.

[0034] In addition, when laying out MIMO antennas, in order to ensure the isolation between antennas, adjacent antennas are usually set to not operate in the same frequency band. However, this limits the flexibility of the overall antenna layout and sometimes has to sacrifice the overall performance of the antennas to deploy each MIMO antenna close to the other.

[0035] To further improve the above-mentioned problems, this application proposes using dual-feed technology under a metal frame. This allows two antennas to be implemented on the same metal radiator, reducing the space occupied by the electronic device. No additional treatment such as seams is needed between the two antennas on the metal radiator, which helps ensure the mechanical strength of the entire device. Furthermore, by feeding the target frequency band radiation signal into the two feed ends of this single metal radiator, different target radiation portions can be formed, i.e., the portions of the metal radiator that contribute to the radiation of the corresponding antenna. This allows the two antennas to operate in the same frequency band (denoted as the target frequency band, the value of which can be determined as needed), ensuring the isolation between the antennas and the overall radiation performance of the antenna.

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] Reference Figure 1 This is a schematic diagram of an optional example of the electronic device proposed in this application. This embodiment describes the structure that enables the communication function of the electronic device. Figure 1 As shown, the structure may include, but is not limited to:

[0038] A metal radiator 100 can be used to realize a first antenna and a second antenna, and the first antenna and the second antenna can be in the same target frequency band. The frequency band range can be determined according to the actual communication needs, and this application does not limit its value.

[0039] The first feed terminal 200 receives a radiation signal with a target frequency band from the first end and the second end of the metal radiator 100, which can form a corresponding first target radiation part, that is, a part of the metal radiator 100, which can be determined according to the actual situation.

[0040] The second feed terminal 300 feeds in a radiation signal with a target frequency band from the first end and the second end of the metal radiator 100, which can form a corresponding second target radiation part. It can be another part of the metal radiator 100 that is different from the first target radiation part. This application does not limit the position of the two target radiation parts on the same end of the metal radiator 100 that realizes the first antenna and the second antenna, and can determine it according to the actual working conditions of the two antennas.

[0041] Therefore, in the process of receiving and radiating signals using the first and second antennas of electronic devices, the corresponding first and second target radiating parts can contribute to the antenna radiation. In this way, by reasonably deploying the positional relationship between the two target radiating parts, effective isolation between the two antennas can be achieved, while ensuring the overall antenna radiation performance. This application does not limit the positional relationship.

[0042] It should be understood that when electronic devices use MIMO antenna technology, multiple sets of input and output antennas need to be deployed. These multiple sets of antennas can be deployed according to the method described above, and this application will not describe each set of antennas in detail.

[0043] In some embodiments, the aforementioned metallic radiator 100 may be a centrosymmetric radiator, such as... Figure 1 The radiator, as shown in the top structure, may include at least a first portion and a second portion intersecting with the first portion. Thus, the first and second target radiating portions are located in these two different portions; for example, the first portion includes the first target radiating portion, and the second portion includes the second target radiating portion. Based on this, when using the first and second antennas to receive or radiate signals in the same frequency band, the signal radiation directions of the two intersecting target radiating portions are different, eliminating the need for additional decoupling techniques, ensuring isolation between the two antennas, and reducing antenna design complexity.

[0044] Among them, in such Figure 1 In the structure of the illustrated electronic device, the first feed terminal 200 and the second feed terminal 300 are deployed on the PCB (Printed Circuit Board) of the electronic device to achieve electrical connection with the signal transceiver in the electronic device. These two feed terminals can be located midway between the first and second ends of the metal radiator 100. The metal radiator 100 is symmetrical about the line formed by these two feed terminals. Thus, when the first feed terminal 200 and the second feed terminal 300 are working, since the metal radiator 100 is a centrally symmetrical radiator, the current distribution on it can be symmetrical. This allows the currents on the non-target radiating parts of the two symmetrical radiators to be symmetrical and opposite in direction, thus canceling each other out. Meanwhile, the currents on the target radiating parts are in the same direction, achieving signal amplification. Ultimately, the antenna displays the current on the corresponding target radiating part contributing to the antenna radiation. Regarding... Figure 1 When the two antennas in the structure receive or radiate signals, the current distribution in the metal radiator 100 can be referred to, but is not limited to, the description in the corresponding part of the following embodiment.

[0045] In some other embodiments, a section of the metal radiator 100 of the electronic device may also be a non-centrosymmetric radiator, such as... Figure 2 The radiating body with the structural shape shown at the top of the middle, under this structure, and Figure 1 The radiators and feed terminals of the two antennas in the illustrated electronic device are deployed in a similar manner. That is, the metal radiator 100 can also include an intersecting first and second part, and the first feed terminal 200 and the second feed terminal 300 can be located between the two ends of the metal radiator 100. However, because the radiators on the left and right sides of the straight line containing the two feed terminals are asymmetrical, it can easily lead to asymmetrical current distribution in the radiators on both sides when the two antennas are working, potentially preventing them from achieving the desired effect. Figure 1 The isolation between the first and second antennas in the radiator structure shown.

[0046] Therefore, to improve the isolation between the two antennas, a suitable isolation circuit can be deployed between the two ends of the metal radiator 100 to adjust the current intensity on the asymmetrical radiator, thereby adjusting the signal strength of the received or radiated signal by the asymmetrical radiator. Figure 1 The isolation effect and radiation performance under the radiator structure shown are described below. This application does not limit the structure of the isolation circuit, but can refer to the detailed description of the corresponding part of the embodiment below.

[0047] It should be noted that, regardless of whether the radiator structure is centrosymmetric or non-centrosymmetric, the structural shape of the metallic radiator includes, but is not limited to, those shapes. Figure 1 and Figure 2 The formation shown can be determined by combining the shape of the metal frame of the electronic device and its spatial shape, etc., which will not be described in detail here.

[0048] In conjunction with the structure of the electronic device described in the above embodiments, in some embodiments, the radiation signals fed into the first and second ends of the metal radiator 100 by the first feed terminal 200 can be orthogonal to the radiation signals fed into the first and second ends of the metal radiator 100 by the second feed terminal 300, thus ensuring the isolation between the first antenna and the second antenna.

[0049] For example, when a radiation signal is fed into the first feed terminal 200, a radiation source can be formed on the metal radiator 100. Figure 3a The current distribution shown takes a centrally symmetrical radiator structure as an example. The current is symmetrically distributed on the metal radiator 100. The currents on the horizontal radiator portion of the metal radiator 100 are opposite and can cancel each other out. The currents on the vertical radiator portion are superimposed in the same direction to enhance the signal. At this time, the vertical radiator portion can be the first target radiating portion corresponding to the first feed terminal 200. It can work by presenting the vertical current to realize signal reception or radiation.

[0050] When the radiated signal is fed into the second feed terminal 300, the following explanation will still be based on a centrally symmetrical radiator structure. The current on the metal radiator 100 can form as follows: Figure 3b The symmetrical distribution shown has orthogonal radiated signals fed into the two feed terminals, as... Figure 3b As shown, the currents on the vertical radiator portion of the metal radiator 100 are opposite and can cancel each other out, while the currents on the horizontal radiator portion are superimposed in the same direction, enhancing the radiation signal intensity of this portion of the radiator. Therefore, the horizontal radiator portion at this time can be the second target radiating portion corresponding to the second feed terminal 300, operating by exhibiting horizontal current to achieve signal reception or radiation. This application does not elaborate on the working principle of the antenna.

[0051] In summary, the effective currents of the first feed terminal 200 and the second feed terminal 300 are orthogonal when they are working, which makes the radiation signals of the corresponding two target radiation parts orthogonal, thus achieving a good degree of isolation between the two antennas.

[0052] In some other embodiments proposed in this application, in conjunction with the above description of the target radiation portions of the two feed terminals, when the radiation signal fed into the second feed terminal 300 from the first end of the metal radiator 100 is orthogonal to the radiation signal fed into the second feed terminal 300 from the second end of the metal radiator 100, the radiation signals fed into the first feed terminal 200 from both ends of the metal radiator 100 can be the same, and a high degree of isolation can be achieved between the first antenna and the second antenna. This application will not describe in detail the process of implementing such signal isolation.

[0053] Based on the electronic devices described in the embodiments above, in order to improve the isolation between the first antenna and the second antenna, such as Figure 4 As shown, the above-mentioned electronic device may also include an isolation circuit 400, which can be used to ensure that the first antenna and the second antenna do not interfere with each other when they are operating at the target frequency band at the same time. This application does not limit the composition and structure of the isolation circuit 400 or its deployment position between the two antennas.

[0054] Optional, such as Figure 4 As shown, the isolation circuit 400 can be located between the second feed terminal 300 and the second end of the metal radiator 100 to achieve isolation between the radiation signals fed into the second feed terminal 300 from both ends of the metal radiator 100. The isolation method can be determined according to the working principle of the isolation circuit 400, and this application does not impose any restrictions on it.

[0055] In one possible implementation, if the isolation circuit 400 is a microstrip line, and the length of the microstrip line can be an odd multiple of half the wavelength corresponding to the target frequency band, such as half the length of the metal radiator 100, then in practical applications of this application, the phase of the radiation signal fed into the second end of the metal radiator 100 by the second feed terminal 300 can be adjusted by the microstrip line, so that it is opposite in direction to the radiation signal fed into the first end of the metal radiator 100, that is, the radiation signals fed into the two ends of the metal radiator 100 have a phase difference of 180 degrees. Figure 3b The radiator current distribution shown, along with the description of related parts, ensures that the radiated signals from the metal radiators 100 fed into the two feed terminals are orthogonal, thereby ensuring a high degree of isolation between the first antenna and the second antenna, reducing signal interference, and improving communication quality.

[0056] Based on the electronic devices described in the above embodiments, in order to further ensure that the first antenna and the second antenna operate simultaneously in the target frequency band, the electronic devices may further include an adjustment circuit. This adjustment circuit can be used to adjust the resonant frequencies of the first antenna and / or the second antenna to operate simultaneously in the target frequency band. For example, in... Figure 3a and Figure 3b In the working scenario shown, when the first feed terminal is working, there is a current zero point on the metal radiator, but when the second feed terminal is working, there is no current zero point on the metal radiator. Thus, the operating frequencies of the first antenna and the second antenna will be different. In order to meet the requirements of MIMO antenna technology, the resonant frequency of at least one antenna can be adjusted by configuring an adjustment circuit, so that the two antennas operate in the same frequency band, denoted as the target frequency band.

[0057] Based on this, in some embodiments, such as Figure 5 As shown, the above-mentioned adjustment circuit may include a first adjustment unit 510 located between the first feed terminal 200 and the first end of the metal radiator 100, and a second adjustment unit 520 located between the second feed terminal 300 and the second end of the metal radiator 100. When the metal radiator 100 is a centrally symmetrical radiator, the circuit structure of the first adjustment unit 510 and the second adjustment unit 520 may be the same. Of course, when the operating frequencies of the first antenna and the second antenna are different, the parameters of at least one of the adjustment units may be appropriately adjusted to change the resonant frequency of the first antenna and ensure that the two antennas operate in the same frequency band.

[0058] Optionally, in the case where the metallic radiator 100 is a non-centrosymmetric radiator, such as Figure 2As shown, a first adjustment unit and a second adjustment unit with the structure and function described above can be deployed. The parameters of these two adjustment units are adjusted in opposite directions, so that the radiation signals of the left and right radiators are enhanced on one side and weakened on the other, the current distribution is nearly symmetrical, and the two antennas operate in the same frequency band. These two adjustment units may include devices such as capacitors and / or inductors. By adjusting the parameters of these devices, the resonant frequency of the first antenna can be adjusted. The adjustment process is not detailed in this application.

[0059] In some other embodiments, the adjustment circuit may also include a third adjustment unit located between the second feed terminal 300 and the first terminal of the metal radiator 100; and a fourth adjustment unit located between the second feed terminal 300 and the second terminal of the metal radiator 100. By adjusting the parameters of the third adjustment unit and the fourth adjustment unit in reverse order, the resonant frequency of the second antenna is adjusted to ensure that the first antenna and the second antenna operate in the same frequency band. The adjustment process can be implemented according to the relevant description of the first adjustment unit and the second adjustment unit above.

[0060] Optionally, in order to adjust the resonant frequency of the antenna and ensure that the two antennas implemented by the same metal radiator operate in the same frequency band, one or more of the above four adjustment units can be selected to form an adjustment circuit. This application will not provide detailed examples of each one.

[0061] Based on the composition and structure of the various electronic devices described above, and the relevant descriptions of the current distribution on the metal radiator when different feed terminals are operating, such as Figure 3a and Figure 3b As shown, when the first antenna and the second antenna are operating simultaneously, the current generated by the first feed terminal 200 on the metal radiator 100 is canceled out in the reverse direction, and the remaining lateral radiating current to the left is as follows: Figure 6a As shown, the current generated by the second feed terminal 300 on the metal radiator 100 is canceled out in the reverse direction, and the remaining transverse radiating part of the current to the right has complementary far-field radiation characteristics, which ensures the isolation between antenna elements and the overall radiation performance of the antenna.

[0062] It should be noted that the structural deployments described in the above optional embodiments can also be applied to electronic devices with non-centrosymmetric radiators. The above figures are only used as examples of centrosymmetric radiators for illustration. The structural deployments and working principles of electronic devices with non-neutral symmetric radiators are similar, and this application will not provide detailed examples.

[0063] Furthermore, in the above embodiments, relational terms such as "first," "second," etc., are used merely to distinguish one unit or module from another, and do not necessarily require or imply any such actual relationship or order between these units or modules. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a device comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the device including said element.

[0064] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0065] Furthermore, the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electronic device, comprising: A metal radiator, wherein the metal radiator is a one-piece seamless metal radiator, used to realize a first antenna and a second antenna, wherein the first antenna and the second antenna are in the same target frequency band; The first feed terminal receives the radiation signal of the target frequency band fed from the first end and the second end of the metal radiator to form the first target radiation portion; The second feed terminal feeds the radiation signal from the first terminal and the second terminal to form a second target radiation portion, wherein the second target radiation portion and the first target radiation portion are different parts of the metal radiator.

2. The electronic device according to claim 1, wherein the radiation signal fed into the first terminal and the second terminal by the first power supply terminal is orthogonal to the radiation signal fed into the first terminal and the second terminal by the second power supply terminal.

3. The electronic device according to claim 1, wherein the radiation signal fed into the second power supply terminal from the first end is orthogonal to the radiation signal fed into the second power supply terminal from the second end.

4. The electronic device according to claim 1, further comprising: An isolation circuit is provided to ensure that the first antenna and the second antenna do not interfere with each other when they are operating simultaneously in the target frequency band.

5. The electronic device according to claim 4, wherein the isolation circuit is located between the second feed terminal and the second terminal.

6. The electronic device according to claim 5, wherein the isolation circuit is a microstrip line, and the length of the microstrip line is an odd multiple of half the wavelength corresponding to the target frequency band.

7. The electronic device according to claim 1, wherein the metal radiator is a centrally symmetrical radiator, and the metal radiator includes at least a first portion and a second portion intersecting with the first portion.

8. The electronic device according to claim 1, further comprising: An adjustment circuit is provided for the first antenna and / or the second antenna to adjust the resonant frequencies of the first antenna and the second antenna so that they can operate simultaneously in the target frequency band.

9. The electronic device according to claim 8, wherein the adjustment circuit comprises: A first adjustment unit is located between the first feed terminal and the first terminal; and / or, A second adjustment unit is located between the first power supply terminal and the second terminal; and / or, A third adjustment unit is located between the second power supply terminal and the first terminal; and / or, The fourth adjustment unit is located between the second power supply terminal and the second terminal.

10. The electronic device according to claim 9, wherein when the metal radiator is a non-centrosymmetric radiator, the parameter adjustment directions between the first adjustment unit and the second adjustment unit are opposite, and the parameter adjustment directions between the third adjustment unit and the fourth adjustment unit are opposite, so that the first antenna and the second antenna operate simultaneously at the target frequency band.

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