Antenna module and electronic equipment

Abstract

The invention relates to an antenna module and electronic equipment, the antenna module is applied to the electronic equipment with a frame, and the frame is provided with a first breaking joint and a second breaking joint; the antenna module comprises a radiator which is located between a first breaking joint and a second breaking joint and is provided with a feeding point and a first grounding point; the radiator comprises a first radiator and a second radiator, the first radiator is located between the first grounding point and the second breaking joint, and one end, far away from the second breaking joint, of the first radiator is electrically connected with the first grounding point; in the first radiating body, the part from the feeding point to the second breaking joint is used as a second radiating body; one end of the first parasitic branch is electrically connected with the first grounding point, and the other end of the first parasitic branch and the frame form a first breaking joint; and one end of the second parasitic branch knot is separated from the radiator to form a second breaking joint, and the second parasitic branch knot is coupled with the radiator.

Description

Technical Field

[0001] The present disclosure relates to the field of antenna technology, and in particular to an antenna module and an electronic device. Background Art

[0002] With the continuous development of wireless communication technology, the frequency bands that can be used in the communication process are also increasing. Electronic devices usually have antennas, and electronic devices use antennas for wireless communication, such as sending and receiving wireless signals. As the number of used frequency bands increases, the antenna needs to support more and more corresponding frequency bands, and the structure of the antenna will also change accordingly.

[0003] Generally speaking, the antennas in related technologies support fewer frequency bands and have certain limitations. Summary of the invention

[0004] The present disclosure provides an antenna module and an electronic device.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided an antenna module, which is applied to an electronic device having a frame, wherein the frame has a first break and a second break; the antenna module comprises: a radiator, which is located between the first break and the second break and has a feeding point and a first grounding point; the radiator comprises a first radiator and a second radiator: wherein the first radiator is located between the first grounding point and the second break, and one end of the first radiator away from the second break is electrically connected to the first grounding point; in the first radiator, the part from the feeding point to the second break serves as the second radiator; a first parasitic branch, wherein one end of the first parasitic branch is electrically connected to the first grounding point, and the other end forms the first break with the frame; a second parasitic branch, wherein one end of the second parasitic branch is separated from the radiator to form the second break, and the second parasitic branch is coupled to the radiator.

[0006] In one embodiment, it further includes: a matching circuit electrically connected to the feeding point, for the antenna module to resonate with a signal of a target frequency band.

[0007] In one embodiment, the matching circuit includes: a first circuit, electrically connected to the feeding point, for tuning the initial resonance; a second circuit, connected to the first circuit, for adjusting the initial resonance so that the first radiator, the second radiator, the first parasitic branch or the second parasitic branch resonates with the wireless signal of the target frequency band.

[0008] In one embodiment, the first circuit includes: a first capacitor element, one end of which is connected to the feeder; a second capacitor element, which is connected in series with the first capacitor element; a third capacitor element, which is connected in series with the second capacitor element, wherein one end of the third capacitor element away from the second capacitor element is grounded; a fourth capacitor element, one end of which is connected to the first radiating part and the other end is grounded; a first inductor element, one end of which is connected between the first capacitor element and the second capacitor element and the other end is grounded; and a second inductor element, which is connected in series between the second capacitor element and the third capacitor element.

[0009] In one embodiment, the second circuit includes: a variable inductance component, one end of which is connected between the first capacitance element and the second capacitance element, and the other end is grounded; wherein the inductance value of the variable inductance component is different, and the frequency band of the resonance is different.

[0010] In one embodiment, the inductance value is a first inductance value, the first parasitic branch resonates with the wireless signal of the first frequency band, and is used to transmit and receive the wireless signal of the first frequency band; the inductance value is a second inductance value, the first radiator resonates with the wireless signal of the second frequency band, and is used to transmit and receive the wireless signal of the second frequency band; the inductance value is a third inductance value, the second radiator resonates with the wireless signal of the third frequency band, and is used to transmit and receive the wireless signal of the third frequency band; wherein the first inductance value, the second inductance value and the third inductance value decrease successively.

[0011] In one embodiment, the second circuit further includes: a fifth capacitor element connected in parallel with the second capacitor element, the variable inductance component and the first capacitor element are in a disconnected state, and the second parasitic branch resonates with a wireless signal in a fourth frequency band.

[0012] In one embodiment, the second parasitic branch has a second grounding point; the second grounding point is located at an end of the second radiator away from the first radiator.

[0013] In one embodiment, the frequencies of the wireless signals resonated by the first parasitic stub, the first radiator, the second radiator, and the second parasitic stub increase sequentially.

[0014] In one embodiment, the first grounding point is grounded via a rib.

[0015] According to a second aspect of the embodiments of the present disclosure, an electronic device is provided, comprising: a middle frame; a border surrounding the middle frame; and the antenna module described in any one of the above embodiments, located on the border.

[0016] In one embodiment, it further includes: a connection component, the connection component includes: a universal serial bus USB component; the second parasitic branch in the antenna module at least partially overlaps with the connection component.

[0017] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0018] The antenna module of the embodiment of the present disclosure includes a radiator, a second parasitic branch and a second parasitic branch. The radiator includes: a first radiator and a second radiator, the first radiator and the second radiator are different radiation areas in the radiator, the first parasitic branch and the second parasitic branch are parasitic parts of the radiator, and the antenna module includes a feeding point. Through a feeding point, different radiating parts in the radiator and the first parasitic branch and the second parasitic branch can receive and transmit wireless signals, and different radiating parts can receive and transmit wireless signals of different frequency bands, thereby realizing the reception and transmission of wireless signals of more different frequency bands, and increasing the coverage range of the corresponding frequency bands of wireless signals supported by the antenna module.

[0019] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] Figure 1 is a schematic diagram of an antenna module according to an exemplary embodiment;

[0022] Figure 2 is a schematic diagram of a variable inductor according to an exemplary embodiment;

[0023] Figure 3 is a schematic diagram showing a variable inductor component L having a first inductance value according to an exemplary embodiment;

[0024] Figure 4 is a schematic diagram showing that the variable inductor component L has a second inductance value according to an exemplary embodiment;

[0025] Figure 5 is a schematic diagram showing that the variable inductance component L has a third inductance value according to an exemplary embodiment;

[0026] Figure 6 is a schematic diagram of another antenna module according to an exemplary embodiment;

[0027] Figure 7is a schematic diagram of return loss of an antenna module for transmitting and receiving wireless signals according to an exemplary embodiment;

[0028] Figure 8 is a schematic diagram showing the radiation efficiency of an antenna module for transmitting and receiving wireless signals according to an exemplary embodiment;

[0029] Fig. 9 is a schematic diagram showing a comparison of radiation efficiency of an antenna module for sending and receiving wireless signals according to an exemplary embodiment;

[0030] Fig.10 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0031] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0032] refer to Figure 1 , is a schematic diagram of an antenna module, which can be applied to an electronic device with a frame, wherein the frame M has a first break A and a second break B.

[0033] The antenna module comprises: a radiator 1, a first parasitic branch 2 and a second parasitic branch 3.

[0034] The radiator 1 is located between the first break A and the second break B. The radiator 1 includes a first radiator 101 and a second radiator 102 . The radiator 1 also has a feeding point 1 a and a first grounding point 1 b .

[0035] The first radiator 101 is located between the first grounding point 1b and the second break B, and one end of the first radiator 101 away from the second break B is electrically connected to the first grounding point 1b; in the first radiator 101, the part from the feeding point 1a to the second break B serves as the second radiator 102.

[0036] One end of the first parasitic branch 2 is electrically connected to the first grounding point 1 b , and the other end forms a first gap A with the frame M.

[0037] One end of the second parasitic branch 3 is separated from the radiator 1 to form a second break B, and the second parasitic branch 103 is coupled to the radiator 1 .

[0038] The electronic device may be a wearable electronic device and a mobile terminal, or may be other electronic devices, which is not limited in the embodiments of the present application.

[0039] Among them, the mobile terminal can be a mobile phone, a tablet computer, etc., and the wearable device can be a smart watch, a smart bracelet, etc.

[0040] The electronic device has a frame M, and the frame M may be a conductor formed of a metal material, an alloy material, or a conductive metal material, or may be a conductor formed of other conductive materials, which is not limited in the embodiments of the present application.

[0041] The frame M has a first break A and a second break B, the portion between the first break A and the second break B is a conductor, the radiator 1, the first parasitic branch 2, and the second parasitic branch 3 are conductors between the first break A and the second break B, and are used to send and receive wireless signals. Exemplarily, the frame M separated from the first parasitic branch 2 by the first break A is grounded.

[0042] A feeding point 1a and a first grounding point 1b are provided on the radiator 1. The feeding point 1a is used for the antenna module to communicate with the RF transceiver module in the electronic device, and transmits the wireless signal received by the antenna module to the RF transceiver module in the electronic device. The RF transceiver module in the electronic device can also transmit the electrical signal corresponding to the wireless signal to the antenna module through the feeding point 1a, and then send the wireless signal through the antenna module.

[0043] Exemplarily, the radiator 1 is a long strip structure.

[0044] The first radiator 101 is located between the second break B and the first grounding point 1 b , and one end of the first radiator 101 away from the second break B is electrically connected to the first grounding point 1 b .

[0045] Exemplarily, the radiator 1 serves as the first radiator 101 .

[0046] The second radiator 102 is the portion between the feeding point 1a and the second slit B in the first radiator 101, and the first radiator 101 and the second radiator 102 can be divided by the feeding point 1a. The portion between the feeding point 1a and the second slit B in the first radiator 101 serves as the second radiator 102, and the second radiator 102 serves as a portion of the first radiator. The second radiator 102 and the first radiator 101 can radiate wireless signals respectively.

[0047] Exemplarily, the first radiator 101 has a first grounding point 1 b , that is, the first grounding point 1 b is located at an end of the first radiator 101 away from the second break B.

[0048] Exemplarily, the feeding point 1 a is located in a region close to the second break B in the first radiator 101 .

[0049] Exemplarily, the first grounding point 1b may be grounded by being connected to a middle frame of the electronic device, or may be grounded in other ways, which is not limited in the embodiments of the present application.

[0050] Exemplarily, the frame may further include a rib C, and the first grounding point 1 b is connected to the rib C and is grounded through the rib C. The rib C may be a conductor, and may also be used to connect the first parasitic branch 2 and the radiator 1 .

[0051] Exemplarily, the feeding point 1a is used to lead the electrical signal on the RF transceiver module in the electronic device to the radiator 1 through the feeder line, so that the radiator 1, the first parasitic branch 2 and the second parasitic branch 3 can radiate the wireless signal of the corresponding frequency band under the excitation of the electrical signal, and when the radiator 1, the first parasitic branch 2 and the second parasitic branch 3 receive the wireless signal of the corresponding frequency band, the electrical signal obtained by converting the received wireless signal of the corresponding frequency band is input into the RF transceiver module through the feeder line.

[0052] The first parasitic branch 2 is located between the first fracture A and the radiator 1 , one end of the first parasitic branch 2 is electrically connected to the first grounding point 1 b , and the other end of the first parasitic branch 2 forms a fracture A with the frame M, that is, the other end of the first parasitic branch 2 is located at the fracture A.

[0053] Exemplarily, the first parasitic branch 2 is arranged at a right angle to the radiator 1, the radiator 1 is located at the first side of the frame M, the first parasitic branch 2 is located at the second side of the frame M, and the first side is perpendicular to the second side. In this way, the situation where the side of the frame M is too long due to different radiating parts being located on the same side of the frame M can be reduced, and the structure of the frame can also be used to form the structure of the antenna, and the antenna is formed on the basis of the frame M.

[0054] Exemplarily, the first parasitic branch 2 is a long strip structure.

[0055] One end of the second parasitic branch 3 is separated from the radiator 1 to form a second break B, and the second parasitic branch 3 is coupled to the radiator 1. Since the second parasitic branch 3 is coupled to the radiator 1, and the radiator 1 is grounded and connected to the feeding point, the radiator 1 can radiate a wireless signal of a corresponding frequency band.

[0056] Exemplarily, the second parasitic branch has a second grounding point 301 , and when the second parasitic branch 3 is grounded and coupled to the radiator 1 , wireless signal transmission and reception are achieved.

[0057] Exemplarily, the second grounding point 301 is located at an end of the second parasitic branch 3 away from the first radiator 101 .

[0058] Exemplarily, the second parasitic branch 3 is a long strip structure.

[0059] Exemplarily, the length of the first parasitic branch 2 is greater than the length of the second parasitic branch 3. The length of the first parasitic branch 2 is greater than the length of the radiator 1, that is, the length of the first parasitic branch 2 is greater than the length of the first radiation 101. The length of the first radiator 101 is greater than the length of the second parasitic branch 3.

[0060] Exemplarily, each of the four parts, namely, the first parasitic branch 2 , the first radiator 101 , the second radiator 102 and the second parasitic branch 3 , can be used as a radiating part of a wireless signal of at least one frequency band, for transmitting and receiving wireless signals of at least one frequency band.

[0061] Exemplarily, the first parasitic branch 2, the first radiator 101, the second radiator 102 and the second parasitic branch 3 are used to transmit and receive wireless signals of different frequency bands.

[0062] Exemplarily, the first parasitic branch 2, as a parasitic part of the first radiator 101, can be used to transmit and receive wireless signals in a first frequency band, the first radiator 101 can be used to transmit and receive wireless signals in a second frequency band, the second radiator 102 can be used to transmit and receive wireless signals in a third frequency band, and the second parasitic branch 3 is used to transmit and receive wireless signals in a fourth frequency band.

[0063] The antenna module of the disclosed embodiment includes a radiator, a second parasitic branch, and a second parasitic branch. The radiator includes: a first radiator and a second radiator, the first radiator and the second radiator are different radiation areas in the radiator, the first parasitic branch and the second parasitic branch are parasitic parts of the radiator, and the antenna module includes a feeding point. Through a feeding point, different radiating parts in the radiator and the first parasitic branch and the second parasitic branch can receive and transmit wireless signals, and different radiating parts can receive and transmit wireless signals of different frequency bands, thereby realizing the reception and transmission of wireless signals of more different frequency bands, and increasing the range of corresponding frequency bands of wireless signals supported by the antenna module for reception and transmission.

[0064] In one embodiment, at least two of the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band may have partially overlapping frequencies.

[0065] Exemplarily, the first frequency band is a low frequency band, such as the B8 band and the B28 band, that is, the 880MHz to 915MHz band and the 703MHz to 748MHz band. The second frequency band is a medium frequency band, such as the B3 band and the B1 band, that is, the 1710MHz to 1785MHz band and the 1920MHz to 1980MHz band. The third frequency band is a high frequency band, for example, the B40 band and the B7 band, that is, the 2300MHz to 2400MHz band and the 2500MHz to 2570MHz band. The fourth frequency band is the N77 and N78 bands.

[0066] Exemplarily, the frequencies corresponding to the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band increase in sequence.

[0067] Exemplarily, the lengths of the first parasitic branch 2, the first radiator 101, the second radiator 102, and the second parasitic branch 3 gradually decrease. The shorter the length of the radiating part, the higher the frequency of the radiated wireless signal, and the longer the length of the radiating part, the lower the frequency of the radiated wireless signal.

[0068] Exemplarily, the length of the first parasitic branch 2 may be 45 mm, the length of the first radiator 101 may be 18 mm, the length of the second radiator 102 may be 5 mm, and the length of the second parasitic branch 3 may be 6.5 mm.

[0069] Exemplarily, the length of the rib is smaller than the length of the second parasitic branch 3 and may be 3 mm.

[0070] In one embodiment, reference Figure 1 , the antenna module also includes:

[0071] The matching circuit 4 is electrically connected to the feeding point 1a and is used for the antenna module to resonate with the signal of the target frequency band, thereby realizing the tuning of the antenna module.

[0072] Exemplarily, the matching circuit 4 has different tuning states. In different tuning states, it is used to tune different parts of the first parasitic branch 2, the first radiator 101, the second radiator 102, and the second parasitic branch 3, so that each part of the first parasitic branch 2, the first radiator 101, the second radiator 102, and the second parasitic branch 3 can be made to resonate with the wireless signals of the corresponding target frequency bands.

[0073] Exemplarily, the matching circuit 4 may include multiple capacitors and multiple inductors, and the connection relationship between the capacitors and inductors may be determined according to actual usage requirements. By adjusting the capacitors and inductors in the matching circuit 4, the impedance of the matching circuit 4 is adjusted, thereby adjusting the matching circuit 4 to different adjustment states, and achieving resonance between each radiating part and the wireless signal of the corresponding target frequency band. Matching circuits that can achieve this function are all within the protection scope of this embodiment.

[0074] Exemplary, reference Figure 2 , is a schematic diagram of another antenna module, which is similar to Figure 1 Correspondingly, the structure of the matching circuit 4 is shown, and the matching circuit 4 may include:

[0075] The first circuit 401 and the second circuit 402, the first circuit 401 is electrically connected to the feeding point 1a, and is used for tuning the initial resonance. The frequency of the initial resonance can be determined according to actual use requirements, and the frequency of the initial resonance can be the center frequency or average frequency of the frequencies corresponding to multiple frequency bands. Through the tuning of the initial resonance by the first circuit 401, it is convenient for the second circuit 402 to adjust the target frequency bands corresponding to the first parasitic branch 2, the first radiator 101, the second radiator 102, and the second parasitic branch 3, so that the first parasitic branch 2, the first radiator 101, the second radiator 102, and the second parasitic branch 3 resonate with the wireless signals of the corresponding target frequency bands.

[0076] Exemplarily, the first circuit 401 may include at least a π-type matching circuit, an L-type matching circuit and / or a T-type matching circuit. The first circuit 401 includes multiple capacitors and multiple inductors, and the connection relationship between the capacitors and inductors can be at least one or more of the above-mentioned types of matching circuits.

[0077] Exemplarily, the first circuit 401 may add capacitance and / or inductance on the basis of a π-type matching circuit, an L-type matching circuit and / or a T-type matching circuit, so as to achieve tuning of the initial resonance according to actual needs.

[0078] The second circuit 402 is electrically connected to the first circuit 401 and is used to adjust the initial resonance of the first circuit 401 so that the first radiator 101, the second radiator 102, the first parasitic branch 2 or the second parasitic branch 3 resonates with the wireless signal of the corresponding target frequency band.

[0079] Exemplarily, the second circuit 402 may include an adjustment circuit, for example, a variable inductance circuit, and the second circuit 402 includes at least an inductor device, and the impedance of the matching circuit 4 is adjusted by adjusting the inductance value connected to the first circuit 401, thereby adjusting the initial resonance. When the inductance value connected to the first circuit 401 is different, the adjustment effect on the initial resonance is different, so that the first radiator 101, the second radiator 102, the first parasitic branch 2 or the second parasitic branch 3 can resonate with the wireless signal of the corresponding target frequency band on the basis of the initial resonance.

[0080] The structure of the variable inductor component L is not limited, as long as it can adjust the inductance value. It can be a variable inductor, or it can include a plurality of different inductors, and the inductance value can be adjusted by a switch.

[0081] Exemplarily, the first radiator 101, the second radiator 102, the first parasitic branch 2 or the second parasitic branch 3 and the corresponding wireless signal of the target frequency band can be determined according to the length of the radiation part.

[0082] Since the frequency bands of the wireless signals received and transmitted by the first radiation part 101, the second radiation part 102, the third radiation part 103 and the second radiator 2 are different, the wireless signals of the target frequency bands received by different radiation areas can be tuned by the matching circuit 4. The antenna module has four different radiation areas, which can receive and transmit wireless signals of more frequency bands, thereby improving the coverage range of the frequency bands for receiving and transmitting wireless signals. The frequency bands supported by this solution may include B28, B20, B8, B3, B1, B38, B39, B40, B41, N77 and N78, covering 700MHz-960MHz, 1700MHz-2800MHz, and 3300MHz-4500MHz.

[0083] In one embodiment, reference Figure 2 , the first circuit 1 comprises:

[0084] a first capacitive element C1 , a second capacitive element C2 , a third capacitive element C3 , a fourth capacitive element C4 , a first inductive element L1 , and a second inductive element L2 .

[0085] One end of the first capacitive element C1 is electrically connected to the feeding point 1 a .

[0086] The second capacitive element C2 is connected in series with the first capacitive element 301 .

[0087] The third capacitor element C3 is connected in series with the second capacitor element C2, wherein one end of the third capacitor element C3 away from the second capacitor element C2 is grounded.

[0088] One end of the fourth capacitor C4 is connected to the first parasitic stub 2 , and the other end is grounded.

[0089] One end of the first inductance element L1 is connected between the first capacitance element C1 and the second capacitance element C2 , and the other end of the first inductance element L1 is grounded.

[0090] The second inductor element L2 is connected in series between the second capacitive element C2 and the third capacitive element C3.

[0091] Models of the first capacitor element C1 , the second capacitor element C2 , the third capacitor element C3 , the fourth capacitor element C4 , the first inductor element L1 and the second inductor element L2 can be selected as required, and parameter values ​​corresponding to the components can also be determined according to actual requirements.

[0092] Exemplarily, the first capacitor element C1, the second capacitor element C2, the third capacitor element C3, the first inductor element L1 and the second inductor element L2 can be used to tune the initial resonant frequency of the first radiator 101, the second radiator 102 and the second parasitic branch 3, and the fourth capacitor element C4 can be used to tune the initial resonant frequency of the first parasitic branch 2.

[0093] Exemplarily, the first capacitive element C1 , the second capacitive element C2 and the first inductive element L1 are used for tuning the wireless signal of the target frequency band of the first parasitic stub 2 and the first radiator 101 .

[0094] Exemplarily, the third capacitive element C3 and the second inductive element L2 may be used to tune the wireless signal of the target frequency band of the second parasitic branch 3 .

[0095] In one embodiment, the second circuit 402 may include:

[0096] The variable inductor component L has one end connected between the first capacitor element C1 and the second capacitor element C2 and the other end grounded; wherein the inductance value of the variable inductor component L is different, and the frequency band of the antenna module resonance is different.

[0097] Exemplarily, the inductance value of the variable inductor component L is the first inductance value, and the frequency band of the antenna module resonance is the first frequency band. For example, the first parasitic branch 2 resonates with the wireless signal of the first frequency band, and the first parasitic branch 2 can transmit and receive the wireless signal of the first frequency band.

[0098] Exemplarily, the inductance value of the variable inductor component L is the second inductance value, and the frequency band of the antenna module resonance is the second frequency band. For example, the first radiator 101 resonates with the wireless signal of the second frequency band, and the first radiator 101 can transmit and receive the wireless signal of the second frequency band.

[0099] Exemplarily, the inductance value of the variable inductor component L is the third inductance value, and the frequency band of the antenna module resonance is the third frequency band. For example, the second radiator 102 resonates with the wireless signal of the third frequency band, and the second radiator 102 can send and receive wireless signals of the third frequency band.

[0100] Exemplarily, the first inductance value, the second inductance value, and the third inductance value decrease in sequence. The frequencies of the wireless signals resonating with the first parasitic branch, the first radiator, the second radiator, and the second parasitic branch increase in sequence, that is, the frequencies corresponding to the first frequency band, the second frequency band, and the third frequency band increase in sequence. In this way, the frequencies of more frequency bands can be covered, so that the antenna module can receive and transmit wireless signals of more frequency bands, thereby improving the performance of the antenna module.

[0101] In one embodiment, reference Figure 2, shows a schematic diagram of a variable inductor, the variable inductor assembly L includes three inductance elements, and the three inductance elements included in the variable inductor assembly L are connected to the line between the first capacitor C1 and the second capacitor C2 through a single-pole four-throw switch. The third inductance element L3, the fourth inductance element L4 and the fifth inductance element L5, the third inductance element L3, the fourth inductance element L4 and the fifth inductance element L5 have different inductance values, and the inductance values ​​of the third inductance element L3, the fourth inductance element L4 and the fifth inductance element L5 gradually increase. The inductance values ​​of the third inductance element L3, the fourth inductance element L4 and the fifth inductance element L5 can be determined according to actual usage requirements.

[0102] Figure 3 The variable inductor L has a first inductance value, which is the inductance value of the fifth inductor L5. Since the parallel inductor has a greater impact on low-frequency wireless signals, the greater the inductance value of the parallel inductor, the greater the impact on low-frequency wireless signals.

[0103] By adjusting the inductance value of the variable inductor component L to the inductance value of the fifth inductor element L5, and the inductance value of the fifth inductor element L5 is the largest, the impedance of the matching circuit 4 is adjusted, so that the reception and transmission of the wireless signal in the low frequency band can be affected, thereby tuning the reception and transmission of the wireless signal in the first frequency band, and the first parasitic branch 2 resonates with the wireless signal in the target frequency band. The wireless signal in the first frequency band here includes the wireless signal at the low frequency end.

[0104] Since the first parasitic branch 2 is used for transmitting and receiving wireless signals in the first frequency band, the frequency corresponding to the first frequency band is the lowest. Figure 3 When the first parasitic branch node 2 is in the position shown, the wireless signal of the first frequency band received and sent by the first parasitic branch node 2 can be tuned, and the resonance between the first parasitic branch node 2 and the wireless signal of the first frequency band enables the first parasitic branch node 2 to receive and send the wireless signal of the first frequency band.

[0105] Exemplarily, the fourth capacitor C4 and the second circuit 402 are used together to make the first parasitic branch 2 resonate with the wireless signal of the first frequency band. The impedance of the matching circuit 4 is adjusted by L5 in the second circuit 402 and the fourth capacitor C4, so that the first parasitic branch 2 can send and receive wireless signals of the first frequency band.

[0106] Figure 4 The second inductance value of the variable inductor component L is a schematic diagram, and the second inductance value is the inductance value of the fourth inductor element L4. Since the parallel inductance has a greater impact on the wireless signal in the low frequency band, the smaller the inductance value of the parallel inductance, the greater the impact on the wireless signal in the higher frequency band.

[0107] By adjusting the inductance value of the variable inductance component L to the inductance value of the fourth inductance element L5, and the inductance value of the fourth inductance element L4 is the largest except for the fifth inductance element L5, the impedance of the matching circuit 4 is adjusted, which can affect the reception and transmission of wireless signals in the mid-frequency band higher than the low-frequency band, thereby tuning the reception and transmission of wireless signals in the second frequency band, and resonating the first radiator 101 with the wireless signals in the second frequency band, so that the first radiator 101 can receive and transmit wireless signals in the second frequency band.

[0108] Since the first radiator 101 is used for transmitting and receiving wireless signals in the second frequency band, the frequency corresponding to the second frequency band is the lowest except for the first frequency band. Figure 4 When in the position shown, the wireless signal of the second frequency band received and sent by the first radiator 101 can be tuned, and the resonance between the first radiator 101 and the wireless signal of the second frequency band enables the first radiator 101 to receive and send the wireless signal of the second frequency band.

[0109] Figure 5 The third inductance value of the variable inductor L is a schematic diagram, and the third inductance value is the inductance value of the third inductor L3. Since the parallel inductance has a greater impact on the low-frequency wireless signal, the smaller the inductance value of the parallel inductance is, the smaller the impact on the low-frequency wireless signal is.

[0110] By adjusting the inductance value of the variable inductance component L to the inductance value of the third inductance element L3, and the inductance value of the third inductance element L3 is the smallest except for the fourth inductance value, and the inductance value of the third inductance element L3 is the smallest among the inductance values ​​of the three inductance elements in the variable inductance component L, the impedance of the matching circuit 4 is adjusted, which can affect the reception and transmission of wireless signals in the high frequency band, thereby tuning the reception and transmission of wireless signals in the third frequency band, and the resonance of the second radiator 102 with the wireless signals in the third frequency band enables the second radiator 102 to receive and transmit wireless signals in the third frequency band.

[0111] Since the second radiator 102 is used for transmitting and receiving wireless signals in the third frequency band, the third frequency band has the highest frequency except for the fourth frequency band. Figure 5 When the position is shown, the wireless signal of the third frequency band received and transmitted by the second radiator 102 can be tuned.

[0112] In another embodiment, the third inductance value is zero, which can facilitate tuning of the reception and transmission of wireless signals in the high frequency band.

[0113] In another embodiment, the second circuit 402 further includes:

[0114] The fifth capacitor C5 is connected in parallel with the second capacitor C2, and the variable inductance component L is disconnected from the first capacitor C1, thereby adjusting the impedance of the matching circuit 4 so that the second parasitic branch 3 resonates with the wireless signal of the fourth frequency band.

[0115] Since the capacitor in the circuit has a greater impact on high-frequency wireless signals, such as wireless signals in the B7 frequency band, the second circuit 402 can also be switched to Figure 6 The state shown. Since the parallel inductance has a smaller effect on the reception and transmission of wireless signals in higher frequency bands, the variable inductance component L is disconnected from the first circuit 401. The parallel capacitance has a greater effect on the reception and transmission of high frequency wireless signals. The fifth capacitance element C5 is connected in parallel with the second capacitance element C2 to adjust the impedance of the matching circuit 4. In this way, the parallel capacitance can have a greater effect on the reception and transmission of wireless signals in high frequency bands such as B7, N77 and N78 or other frequency bands, thereby facilitating the tuning of the reception and transmission of wireless signals in the fourth frequency band by the matching circuit 4, realizing the resonance of the second parasitic branch 3 with the wireless signals in the fourth frequency band, so that the second parasitic branch 3 can receive and transmit wireless signals in the fourth frequency band.

[0116] refer to Figure 7 , which is a schematic diagram of the return loss of an antenna module for sending and receiving wireless signals, refer to Figure 8 , is a schematic diagram of the radiation efficiency of an antenna module for sending and receiving wireless signals. The dots correspond to the curves for the radiation efficiency curves of wireless signals in the N77 and N78 frequency bands, the squares correspond to the curves for the radiation efficiency curves of high-frequency wireless signals, the triangles correspond to the curves for the radiation efficiency curves of medium-frequency wireless signals, and the dotted lines are the radiation efficiency curves for low-frequency wireless signals. The radiation efficiency of wireless signals in the low-frequency band is greater than -12dB, the radiation efficiency of wireless signals in the medium- and high-frequency bands is greater than -6dB, and the radiation efficiency of wireless signals in the N77 and N78 bands is greater than -6dB. Reference Fig. 9 , is a schematic diagram of a comparison of the radiation efficiency of an antenna module for sending and receiving wireless signals. The solid line is the radiation efficiency of the wireless signal in the low frequency band of this solution, and the dotted line is the radiation efficiency of the wireless signal in the low frequency band in the related art. Fig. 9 It can be seen that the radiation efficiency of wireless signals in the low-frequency band of this solution is higher, which is improved by about 3dB or more.

[0117] In another embodiment, in combination Figures 1 to 6The matching network includes the main matching, which is divided into 2 levels. The first level matching is a Π-type network composed of L1, C1 and C2, which is used to match the tuning of the reception and transmission of wireless signals in the low-frequency band and the medium-frequency band. The second level composed of L2 and C3 is mainly used to match the tuning of the reception and transmission of wireless signals in the N77 / 78 band. There is a single-pole four-throw SP4T switch after the inductor L1 for frequency band switching, which can cover the tuning of the entire low, medium and high frequency bands. The side parasitic ground capacitor C4 can be used to tune the low-frequency initial resonance position.

[0118] This embodiment is realized by a Π-type matching network composed of a series capacitor, a parallel inductor, and a series capacitor. The low-frequency antenna of this solution has higher efficiency and wider bandwidth. By adding a parasitic branch (i.e., a parasitic part, a second radiator) at the USB interface of the electronic device, the N77+N78 frequency band is supported.

[0119] The low-frequency radiation area (i.e., the first parasitic branch) mainly uses the side ribs to the partition bar, and the matches that have a greater impact on LB are C1, L1, C2, C4, and L5. The mid-frequency is the R angle rib to the bottom partition bar (i.e., the first radiator), and the matches that have a greater impact on the mid-frequency are L1 and C2. The high-frequency radiation area is from the feed point to the bottom partition bar (i.e., the second radiator), and the matches that have a greater impact on the high frequency are L1, C2, C5, and L4. The radiation area of ​​N77 and N78 is from the parasitic branch at the USB to the bottom partition bar (i.e., the second parasitic branch), and the matches that have a greater impact on N77 and N78 are L2 and C3.

[0120] The specific frequency bands supported by this solution include B28, B20, B8, B3, B1, B38, B39, B40, B41, N77, and N78, covering 700-960MHz, 1700-2800MHz, and 3300-4500MHz. By integrating the N77 and N78 frequency bands, the low-frequency tunable range is increased from the bandwidth of 750MHz-770MHz to 700-850Mhz+880-960MHz, and the bandwidth is significantly enhanced.

[0121] In another embodiment, an electronic device is provided, including:

[0122] Middle frame;

[0123] The border, which surrounds the middle frame;

[0124] The antenna module in any of the above embodiments is located on the frame.

[0125] In another embodiment, it also includes:

[0126] The connection component includes: a universal serial bus USB component; the universal serial bus USB component can at least be used for charging and data transmission.

[0127] The second parasitic branch in the antenna module at least partially overlaps with the connecting component.

[0128] It should be noted that the “first” and “second” in the embodiments of the present disclosure are only for the convenience of description and distinction and have no other specific meanings.

[0129] Fig.10 1 is a block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device includes a mobile phone, a computer, a digital broadcast terminal, a message transceiver device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0130] Reference Fig.10 , the electronic device may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 8102 , a sensor component 814 , and a communication component 816 .

[0131] The processing component 802 generally controls the overall operation of the electronic device, such as operations associated with display, data communication, camera operation, and recording operation. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0132] The memory 804 is configured to store various types of data to support the operation of the electronic device. Examples of such data include instructions, messages, pictures, videos, etc. for any application or method operating on the electronic device. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0133] The power component 806 provides power to various components of the electronic device. The power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device.

[0134] The multimedia component 808 includes a screen that provides an output interface between the electronic device and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the electronic device is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0135] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the electronic device is in an operating mode, such as a recording mode and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0136] I / O interface 8102 provides an interface between processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0137] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the electronic device. For example, the sensor assembly 814 can detect the open / closed state of the electronic device, the relative positioning of components, such as the display and keypad of the electronic device, and the sensor assembly 814 can also detect the position change of the electronic device or a component of the electronic device, the presence or absence of user contact with the electronic device, the orientation or acceleration / deceleration of the electronic device and the temperature change of the electronic device. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0138] The communication component 816 is configured to facilitate wired or wireless communication between the electronic device and other devices. The electronic device can access a wireless network based on a communication standard, such as Wi-Fi, 4G or 5G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0139] In an exemplary embodiment, the electronic device may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above methods.

[0140] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0141] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An antenna module, characterized in that: Applicable to an electronic device having a frame, wherein the frame has a first break and a second break; the antenna module comprises: A radiator, located between the first slit and the second slit, having a feeding point and a first grounding point; the radiator comprises a first radiator and a second radiator: wherein the first radiator is located between the first grounding point and the second slit, and an end of the first radiator away from the second slit is electrically connected to the first grounding point; in the first radiator, the portion from the feeding point to the second slit serves as the second radiator; a first parasitic branch, wherein one end of the first parasitic branch is electrically connected to the first grounding point, and the other end of the first parasitic branch forms the first fracture with the frame; A second parasitic branch, one end of which is separated from the radiator to form the second fracture, and the second parasitic branch is coupled with the radiator.

2. The antenna module according to claim 1, characterized in that: Also includes: A matching circuit is electrically connected to the feeding point and is used for the antenna module to resonate with a signal of a target frequency band.

3. The antenna module according to claim 2, characterized in that: The matching circuit comprises: A first circuit, electrically connected to the feed point, for tuning the initial resonance; The second circuit is connected to the first circuit and is used to adjust the initial resonance so that the first radiator, the second radiator, the first parasitic branch or the second parasitic branch resonates with the wireless signal of the target frequency band.

4. The antenna module according to claim 3, characterized in that: The first circuit comprises: A first capacitive element, one end of which is electrically connected to the feeder; A second capacitive element connected in series with the first capacitive element; A third capacitor element is connected in series with the second capacitor element, wherein one end of the third capacitor element away from the second capacitor element is grounded; a fourth capacitor element, one end of which is connected to the first parasitic branch and the other end of which is grounded; A first inductor element, one end of which is connected between the first capacitive element and the second capacitive element, and the other end of which is grounded; A second inductor element is connected in series between the second capacitor element and the third capacitor element.

5. The antenna module according to claim 3, characterized in that: The second circuit comprises: A variable inductor component has one end connected between the first capacitor element and the second capacitor element, and the other end grounded; wherein the inductance value of the variable inductor component is different and the resonance frequency band is different.

6. The antenna module according to claim 5, characterized in that: The inductance value is a first inductance value, and the first parasitic branch resonates with a wireless signal of a first frequency band and is used to transmit and receive the wireless signal of the first frequency band; The inductance value is a second inductance value, and the first radiator resonates with a wireless signal in a second frequency band, and is used to transmit and receive wireless signals in the second frequency band; The inductance value is a third inductance value, and the second radiator resonates with a wireless signal in a third frequency band, and is used to send and receive the wireless signal in the third frequency band; The first inductance value, the second inductance value and the third inductance value decrease in sequence.

7. The antenna module according to claim 5, characterized in that: The second circuit further includes: A fifth capacitor element is connected in parallel with the second capacitor element, the variable inductance component and the first capacitor element are in a disconnected state, and the second parasitic branch resonates with a wireless signal in a fourth frequency band.

8. The antenna module according to claim 1, characterized in that: The second parasitic branch has a second grounding point; The second grounding point is located at an end of the second parasitic branch away from the first radiator.

9. The antenna module according to claim 1, characterized in that: The frequencies of the wireless signals resonated by the first parasitic branch, the first radiator, the second radiator, and the second parasitic branch increase sequentially.

10. The antenna module according to claim 1, characterized in that: The first grounding point is grounded through a rib.

11. An electronic device, characterized in that: include: Middle frame; A frame surrounding the middle frame; The antenna module according to any one of claims 1 to 10 is located on the frame.

12. The electronic device according to claim 11, further comprising: A connection component, the connection component comprising: a universal serial bus USB component; The second parasitic branch in the antenna module at least partially overlaps with the connecting component.

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