Antenna device and electronic equipment

Abstract

The embodiment of the invention provides an antenna device and electronic equipment, and the antenna device comprises a first antenna unit which comprises a feeding point, and the feeding point is used for feeding in an excitation signal to excite the first antenna unit to generate first resonance; the second antenna unit is an annular antenna, a gap is formed between the second antenna unit and the first antenna unit, the second antenna unit is electromagnetically coupled with the first antenna unit through the gap, and the excitation signal is further used for exciting the second antenna unit and the first antenna unit to jointly generate second resonance. According to the antenna device provided by the embodiment of the invention, a new resonance frequency band can be increased, the bandwidth of the antenna device can be expanded, the limitation between the size of the second antenna unit and the size of the first antenna unit is very small, and the size of the second antenna unit and the size of the first antenna unit can be freely set, so that the design of the antenna device has a greater degree of freedom; therefore, the design of the antenna can be simplified.

Description

Technical Field

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

[0002] Electronic devices such as smartphones are usually equipped with multiple antennas, such as LB (Lower Band) antennas, MHB (Middle High Band) antennas, WIFI antennas, etc., to achieve corresponding communication functions.

[0003] In the related art, when designing an antenna, due to the limitations of various factors such as the appearance and structural conditions of the electronic device, the antenna size is often difficult to meet the requirements, resulting in difficulties in antenna design. Summary of the invention

[0004] The embodiments of the present application provide an antenna device and an electronic device, which can improve the degree of freedom of antenna design, thereby simplifying the design of the antenna.

[0005] An embodiment of the present application provides an antenna device, including:

[0006] A first antenna unit, comprising a feeding point, wherein the feeding point is used to feed an excitation signal to excite the first antenna unit to generate a first resonance;

[0007] The second antenna unit is a loop antenna, a gap is formed between the second antenna unit and the first antenna unit, the second antenna unit is electromagnetically coupled to the first antenna unit through the gap, and the excitation signal is also used to excite the second antenna unit and the first antenna unit to jointly generate a second resonance.

[0008] The present application also provides an electronic device, including:

[0009] case;

[0010] The antenna device is arranged on the housing, and the antenna device is the above-mentioned antenna device.

[0011] In the antenna device provided in the embodiment of the present application, the second antenna unit and the first antenna unit can jointly generate a second resonance, thereby adding a new resonance frequency band and expanding the bandwidth of the antenna device. The second antenna unit is a ring antenna, so there is little restriction between the size of the second antenna unit and the size of the first antenna unit. The size of the second antenna unit and the size of the first antenna unit can be freely set, so that the design of the antenna device has greater freedom, thereby simplifying the design of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0013] Figure 1 This is a schematic diagram of the first structure of the antenna device according to an embodiment of the present application.

[0014] Figure 2 for Figure 1 A schematic structural diagram of a first matching module of the antenna device is shown.

[0015] Figure 3 for Figure 1 A schematic structural diagram of the second antenna unit of the antenna device shown.

[0016] Figure 4 for Figure 1 Schematic diagram of current distribution of the second resonance of the antenna device shown.

[0017] Figure 5 for Figure 1 A schematic structural diagram of a first antenna unit of the antenna device shown.

[0018] Figure 6 This is a schematic diagram of a second structure of the antenna device according to an embodiment of the present application.

[0019] Figure 7 for Figure 6 A schematic structural diagram of a first antenna unit of the antenna device shown.

[0020] Figure 8 for Figure 6 Schematic diagram of current distribution of the second resonance of the antenna device shown.

[0021] Fig. 9 for Figure 1 A structural example diagram of an antenna device is shown.

[0022] Fig.10 for Figure 6 A structural example diagram of an antenna device is shown.

[0023] Fig.11 It is a schematic diagram of a first simulation result of the antenna device according to an embodiment of the present application.

[0024] Fig.12 It is a schematic diagram of a second simulation result of the antenna device according to an embodiment of the present application.

[0025] Fig.13 This is the first resonance pattern of the antenna device according to the embodiment of the present application.

[0026] Fig.14 This is the second resonance pattern of the antenna device according to the embodiment of the present application.

[0027] Fig.15 This is the third resonance pattern of the antenna device according to the embodiment of the present application.

[0028] Fig.16 It is a schematic diagram of a third simulation result of the antenna device according to an embodiment of the present application.

[0029] Fig.17 It is a schematic diagram of a fourth simulation result of the antenna device according to an embodiment of the present application.

[0030] Fig.18 A schematic diagram of S parameters of the antenna device according to an embodiment of the present application.

[0031] Fig.19 It is a schematic diagram of a fifth simulation result of the antenna device according to an embodiment of the present application.

[0032] Fig. 20 A schematic diagram of the structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0034] The embodiment of the present application provides an antenna device, which can be applied to electronic devices. The electronic devices can be devices such as smart phones, tablet computers, and can also be devices with wireless communication functions such as gaming devices, AR (Augmented Reality) devices, cars, laptops, and desktop computing devices.

[0035] refer to Figure 1 , Figure 1 1 is a schematic diagram of a first structure of an antenna device 10 according to an embodiment of the present application. The antenna device 10 includes a first antenna unit 11, a second antenna unit 12, a feed source 13 and a first matching module M1.

[0036] The first antenna unit 11 and the second antenna unit 12 can be antenna radiators in the form of FPC (Flexible Printed Circuit), LDS (Laser Direct Structure), PDS (Printing Direct Structure), etc., or they can be antenna radiators formed by structures such as conductor structures inside electronic equipment and metal traces on circuit boards. In practical applications, the first antenna unit 11 and the second antenna unit 12 can be antenna radiators of different forms or of the same form. The shape and size of the first antenna unit 11 and the second antenna unit 12 can be set according to actual needs.

[0037] The first antenna unit 11 includes a feeding point 11a. The feeding point 11a is used to feed an excitation signal to excite the first antenna unit 11 to generate a first resonance and radiate a wireless signal of the first resonance to the outside. The excitation signal may be an excitation signal of 4G communication, 5G communication, WIFI communication, etc.

[0038] The second antenna unit 12 is a loop antenna. A gap 10a is formed between the second antenna unit 12 and the first antenna unit 11. The second antenna unit 12 is electromagnetically coupled to the first antenna unit 11 through the gap 10a. The excitation signal is also used to excite the second antenna unit 12 and the first antenna unit 11 to jointly generate a second resonance and jointly radiate a wireless signal of the second resonance to the outside.

[0039] The feed source 13 may be disposed on a circuit board of the electronic device, for example, on a main board, or on a separate small board. The feed source 13 is used to provide the above-mentioned excitation signal. The feed source 13 is electrically connected to the feed point 11a to feed the excitation signal to the first antenna unit 11 through the feed point 11a.

[0040] The first matching module M1 can also be arranged on a circuit board of the electronic device, for example, on a main board. The first matching module M1 is connected between the feed source 13 and the feed point 11a. The first matching module M1 is used to perform impedance matching on the first antenna unit 11 to switch or change the frequency band of the first resonance.

[0041] In practical applications, the first matching module M1 may include one or more of an inductor and a capacitor. When the first matching module M1 includes both an inductor and a capacitor, the inductor and the capacitor may be connected in series or in parallel. Figure 2 , Figure 2 for Figure 1 The schematic diagram of the structure of the first matching module M1 of the antenna device is shown in FIG. The circuit structure of the first matching module M1 can be Figure 2Any one of A to H shown.

[0042] Among them, A is the inductor and capacitor connected in series. B is the capacitor and inductor connected in parallel. C is the capacitor and inductor connected in parallel to form a parallel unit, and then the parallel unit is connected in series with the capacitor. D is the capacitor and inductor connected in parallel to form a parallel unit, and then the parallel unit is connected in series with the inductor. E is the inductor and capacitor connected in series to form a series unit, and then the series unit is connected in parallel with the capacitor. F is the inductor and capacitor connected in series to form a series unit, and then the series unit is connected in parallel with the inductor. G is the capacitor and inductor connected in parallel to form a parallel unit, and then the two parallel units are connected in series. H is the inductor and capacitor connected in series to form a series unit, and then the two series units are connected in parallel.

[0043] It should be noted that Figure 2 In the circuit structures A to H shown, the inductor can be an inductor with a fixed inductance value or an inductor with an adjustable inductance value; the capacitor can be a capacitor with a fixed capacitance value or a capacitor with an adjustable capacitance value. The specific specifications of the inductor and capacitor can be set according to actual needs.

[0044] It can be understood that in the embodiment of the present application, since the second antenna unit 12 is a loop antenna, the size of the second antenna unit 12 is very similar to the size of the first antenna unit 11. The size of the second antenna unit 12 and the size of the first antenna unit 11 can be freely set, so that the design of the antenna device 10 has greater freedom.

[0045] In practical applications, the first resonance and the second resonance cover different frequency bands. In some embodiments, the center frequency of the second resonance may be greater than the center frequency of the first resonance. For example, the first resonance and the second resonance may respectively cover different frequency bands in the MHB (frequency range between 1000MHz and 3000MHz) of 4G communication, such as the first resonance may cover the B3 frequency band (uplink frequency 1710MHz to 1785MHz), and the second resonance may cover the B41 frequency band (frequency range 2496MHz to 2690MHz).

[0046] In the antenna device 10 of the embodiment of the present application, the second antenna unit 12 and the first antenna unit 11 can jointly generate a second resonance, thereby adding a new resonance frequency band and expanding the bandwidth of the antenna device 10, and the second antenna unit 12 forms a loop antenna, so there is little restriction between the size of the second antenna unit 12 and the size of the first antenna unit 11, and the size of the second antenna unit 12 and the size of the first antenna unit 11 can be freely set, so that the design of the antenna device 10 has greater freedom, thereby simplifying the design of the antenna.

[0047] In some embodiments, reference Figure 3 , Figure 3 for Figure 1 A schematic structural diagram of the second antenna unit 12 of the antenna device is shown.

[0048] The second antenna unit 12 includes a first end 121 and a second end 122, wherein the first end 121 is opposite to the second end 122. The first end 121 faces the first antenna unit 11. The gap 10a is located between the first end 121 and the first antenna unit 11. The second end 122 faces away from the first antenna unit 11. The first end 121 and the second end 122 are both grounded, for example, they are both connected to the system ground of the electronic device to achieve grounding, so that the second antenna unit 12 forms a loop antenna.

[0049] It can be understood that the first end 121 and the second end 122 are both grounded, so a current loop can be formed between the first end 121, the second end 122 and the system ground, thereby enabling the second antenna unit 12 to form a loop antenna.

[0050] refer to Figure 4 , Figure 4 for Figure 1 A schematic diagram of current distribution of a second resonance of the antenna device 10 is shown.

[0051] When the second antenna unit 12 and the first antenna unit 11 generate the second resonance together, the second resonance generates a first resonance current I1 on the first antenna unit 11 and generates a second resonance current I2 on the second antenna unit 12 .

[0052] Among them, when the second resonance is generated, the resonant current is mainly concentrated in the second antenna unit 12, so the second resonant current I2 is a stronger current, the first resonant current I1 is a weaker current, and the intensity of the second resonant current I2 is greater than the intensity of the first resonant current I1. It can be seen that the second resonance mainly occurs in the second antenna unit 12, so the second resonance can be understood as a loop mode resonance.

[0053] In some embodiments, reference Figure 5 , Figure 5 for Figure 1 A schematic structural diagram of the first antenna unit 11 of the antenna device shown.

[0054] The first antenna unit 11 is a monopole antenna. In this case, the center frequency of the first resonance is less than the center frequency of the second resonance. For example, the first resonance can cover the B3 frequency band of 4G communication (uplink frequency 1710MHz to 1785MHz), and the second resonance can cover the B41 frequency band of 4G communication (frequency range 2496MHz to 2690MHz).

[0055] The first antenna unit 11 includes a third end 111 and a fourth end 112, and the third end 111 is opposite to the fourth end 112. The third end 111 is away from the second antenna unit 12. The fourth end 112 is toward the second antenna unit 12. The gap 10a is located between the fourth end 112 and the second antenna unit 12. Among them, the feeding point 11a is located at the third end 111, and the fourth end 112 is a free end, so that the first antenna unit 11 forms a monopole antenna. In this case, the first resonance is a quarter-wavelength resonance from the feeding point 11a to the fourth end 112. The wavelength is the wavelength corresponding to the center frequency of the first resonance.

[0056] In some embodiments, reference Figure 6 and Figure 7 , Figure 6 1 is a schematic diagram of a second structure of the antenna device 10 according to an embodiment of the present application. Figure 7 for Figure 6 A schematic structural diagram of the first antenna unit 11 of the antenna device shown.

[0057] Among them, the first antenna unit 11 is an IFA antenna (Inverted-F antenna). In this case, the excitation signal is also used to excite the first antenna unit 11 to generate a third resonance and radiate the wireless signal of the third resonance to the outside world. At this time, the center frequency of the first resonance is less than the center frequency of the third resonance, and the center frequency of the second resonance is between the center frequency of the first resonance and the center frequency of the third resonance. For example, the first resonance can cover the B3 frequency band of 4G communication (uplink frequency 1710MHz~1785MHz), the second resonance can cover the B41 frequency band of 4G communication (frequency range 2496MHz~2690MHz), and the third resonance can cover the N78 frequency band of 5G communication (frequency range 3300MHz~3800MHz).

[0058] like Figure 7 As shown, the first antenna unit 11 includes a third end 111 and a fourth end 112, and the third end 111 is opposite to the fourth end 112. The third end 111 is away from the second antenna unit 12. The fourth end 112 faces the second antenna unit 12. The gap 10a is located between the fourth end 112 and the second antenna unit 12.

[0059] The first antenna unit 11 also includes a grounding point 11b. The grounding point 11b is grounded, for example, the grounding point 11b is connected to the system ground of the electronic device to achieve grounding. Wherein, the grounding point 11b is located at the third end 111, the feeding point 11a is located between the third end 111 and the fourth end 112, and the fourth end 112 is a free end, so that the first antenna unit 11 forms an IFA antenna. Wherein, the first resonance is a quarter-wavelength resonance from the grounding point 11b to the fourth end 112, and the wavelength is the wavelength corresponding to the center frequency of the first resonance. The third resonance is a quarter-wavelength resonance from the feeding point 11a to the fourth end 112, and the wavelength is the wavelength corresponding to the center frequency of the third resonance.

[0060] refer to Figure 8 , Figure 8 for Figure 6 A schematic diagram of current distribution of a second resonance of the antenna device 10 is shown.

[0061] in, Figure 8 The current distribution of the second resonance is shown in Figure 4 The current distribution of the second resonance is similar. When the second antenna unit 12 and the first antenna unit 11 generate the second resonance together, the second resonance generates a first resonance current I1 on the first antenna unit 11 and a second resonance current I2 on the second antenna unit 12 .

[0062] When the second resonance is generated, the resonance current is mainly concentrated in the second antenna unit 12 , so the second resonance current I2 is a stronger current, the first resonance current I1 is a weaker current, and the intensity of the second resonance current I2 is greater than that of the first resonance current I1 .

[0063] In some embodiments, reference Fig. 9 , Fig. 9 for Figure 1 An exemplary structural diagram of the antenna device 10 is shown.

[0064] The antenna device 10 further includes a second matching module M2 and a third matching module M3. The second matching module M2 and the third matching module M3 can be arranged on a circuit board of the electronic device, for example, on a main board.

[0065] The first end 121 of the second antenna unit 12 is grounded through the second matching module M2. The second matching module M2 is used to adjust the frequency of the second resonance. In practical applications, the specific circuit structure of the second matching module M2 can be similar to that of the first matching module M1. For example, the specific circuit structure of the second matching module M2 can also be Figure 2 Any one of A to H shown will not be described in detail here.

[0066] The second end 122 of the second antenna unit 12 is grounded through the third matching module M3. The third matching module M3 is also used to adjust the frequency of the second resonance. In practical applications, the specific circuit structure of the third matching module M3 can be similar to that of the first matching module M1. For example, the specific circuit structure of the third matching module M3 can also be Figure 2 Any one of A to H shown will not be described in detail here.

[0067] It can be understood that when the antenna device 10 includes both the second matching module M2 and the third matching module M3, the frequency of the second resonance can be adjusted by the second matching module M2 and the third matching module M3 together.

[0068] In some other application examples, only one of the second matching module M2 and the third matching module M3 may be provided. For example, the antenna device 10 may include only the second matching module M2 but not the third matching module M3, in which case the frequency of the second resonance may be adjusted by the second matching module M2. For another example, the antenna device 10 may include only the third matching module M3 but not the second matching module M2, in which case the frequency of the second resonance may be adjusted by the third matching module M3.

[0069] In some embodiments, reference Fig.10 , Fig.10 for Figure 6 An exemplary structural diagram of the antenna device 10 is shown. Figure 6 In the antenna device 10 shown, a second matching module M2 and a third matching module M3 may also be provided, or only one of the second matching module M2 and the third matching module M3 may be provided. Fig. 9 For the same, please refer to the description in the above embodiment and will not be repeated here.

[0070] refer to Fig.11 and Fig.12 , Fig.11 is a schematic diagram of a first simulation result of the antenna device 10 according to an embodiment of the present application, Fig.12 1 is a schematic diagram of a second simulation result of the antenna device 10 of the embodiment of the present application. It should be noted that the simulation in the embodiment of the present application is described by taking the first antenna unit 11 forming an IFA antenna as an example. The structures of the antenna device 10 and the first antenna unit 11 are as follows: Figure 6 and Figure 7 As shown, the simulation below is the same as this and will not be repeated. In order to facilitate performance comparison, the following settings were made during the simulation: Fig.11 The antenna device 10 for the simulation shown includes only the first antenna unit 11 but does not include the second antenna unit 12; Fig.12The antenna device 10 targeted by the simulation includes a first antenna unit 11 and a second antenna unit 12 .

[0071] like Fig.11 As shown, L11 is the S parameter curve of the antenna device 10. Among them, the mark point 1 represents the frequency of the first resonance, which is about 1.8923GHz, and its radiation efficiency is about -3.4014dB; the mark point 2 represents the frequency of the third resonance, which is about 3.4853GHz, and its radiation efficiency is about -22.845dB. L21 is the total radiation efficiency curve of the antenna device 10. L31 is the theoretical radiation efficiency curve of the antenna device 10.

[0072] like Fig.12 As shown, L12 is the S parameter curve of the antenna device 10. Among them, the mark point 1 represents the frequency of the first resonance, which is about 1.8306GHz, and its radiation efficiency is about -3.8838dB; the mark point 2 represents the frequency of the third resonance, which is about 3.348GHz, and its radiation efficiency is about -15.673dB; the mark point 3 represents the frequency of the second resonance, which is about 2.7499GHz, and its radiation efficiency is about -8.3696dB. L22 is the total radiation efficiency curve of the antenna device 10. L32 is the theoretical radiation efficiency curve of the antenna device 10.

[0073] Depend on Fig.11 and Fig.12 It can be seen from the comparison that after adding the second antenna unit 12, the second resonance (loop mode resonance) generated has a very high efficiency and has little effect on the efficiency of the original first resonance and the third resonance.

[0074] refer to Figures 13 to 15 , Fig.13 is the first resonance directional diagram of the antenna device 10 according to the embodiment of the present application, Fig.14 is the second resonance directional diagram of the antenna device 10 according to the embodiment of the present application, Fig.15 This is the third resonance pattern of the antenna device 10 according to the embodiment of the present application.

[0075] Depend on Fig.14 It can be seen that the second resonance (loop mode resonance) has obvious surround characteristics.

[0076] refer to Fig.16 , Fig.16 This is a schematic diagram of a third simulation result of the antenna device 10 according to an embodiment of the present application. The meanings of L21, L22, L31, and L32 in the figure are the same as those in the above embodiment and will not be repeated here.

[0077] Depend on Fig.16It can be seen that after adding the second antenna unit 12, as the frequency increases, the radiation efficiency of the generated second resonance (loop mode resonance) initially increases effectively, as shown in the comparison between point 1 and point 2 in the figure, and then the radiation efficiency decreases, as shown in the comparison between point 3 and point 4 in the figure, and then the radiation efficiency gradually recovers, with little effect on the radiation efficiency in subsequent high-frequency bands, indicating that the second resonance (loop mode resonance) has the potential for broadbandization.

[0078] The antenna device 10 of the embodiment of the present application can adjust the frequency of the second resonance by the second matching module M2 and / or the third matching module M3. In practical applications, the frequency of the second resonance can also be adjusted by adjusting the length of the second antenna unit 12.

[0079] refer to Fig.17 , Fig.17 Schematic diagram of the fourth simulation result of the antenna device 10 of the embodiment of the present application. The meanings of L12, L22, and L32 are the same as those in the above embodiment and are not repeated here. L13 is the S parameter curve of the antenna device 10 after adjusting the frequency of the second resonance. L23 is the total radiation efficiency curve of the antenna device 10 after adjusting the frequency of the second resonance. L33 is the theoretical radiation efficiency curve of the antenna device 10 after adjusting the frequency of the second resonance.

[0080] Depend on Fig.17 It can be seen that after adjusting the frequency of the second resonance, the parameters such as the frequency and radiation efficiency of the first and third resonances are almost not affected. Therefore, in practical applications, the second resonance (loop mode resonance) can be adjusted without affecting the first and third resonances.

[0081] refer to Fig.18 and Fig.19 , Fig.18 is a schematic diagram of S parameters of the antenna device 10 according to an embodiment of the present application, Fig.19 FIG. 5 is a schematic diagram of a fifth simulation result of the antenna device 10 according to an embodiment of the present application.

[0082] Fig.18 In the figure, the meaning of L12 is the same as that in the above embodiment and will not be repeated here. L14 represents the S parameter curve of the antenna device 10 after the frequency of the second resonance is adjusted. The frequency of the second resonance is adjusted to be greater than the frequency of the third resonance. The second resonance is shown as point 4 in the figure, with a frequency of about 3.5994 GHz and a radiation efficiency of about -3.7212 dB; the third resonance is shown as point 2 in the figure, with a frequency of about 3.348 GHz and a radiation efficiency of about -15.673 dB.

[0083] Fig.19In the embodiment, the meanings of L12, L14, L22, and L32 are the same as those in the above embodiment and are not described in detail here. L24 is a total radiation efficiency curve of the antenna device 10 after adjusting the frequency of the second resonance. L34 is a theoretical radiation efficiency curve of the antenna device 10 after adjusting the frequency of the second resonance. The frequency of the second resonance is adjusted to be greater than the frequency of the third resonance.

[0084] Depend on Fig.18 and Fig.19 It can be seen that after adjusting the frequency of the second resonance to be greater than the frequency of the third resonance, the resonance amplitude of the second resonance (loop mode resonance) will become shallower, and the radiation efficiency gain will not be obvious. Therefore, the optimal frequency of the second resonance (loop mode resonance) is between the frequency of the first resonance and the frequency of the third resonance, at which time the second resonance (loop mode resonance) has the best gain in radiation efficiency.

[0085] The embodiment of the present application also provides an electronic device. The electronic device may be a device such as a smart phone, a tablet computer, or a gaming device, an AR (Augmented Reality) device, a car, a laptop computer, a desktop computing device, or other device with a wireless communication function.

[0086] refer to Fig. 20 , Fig. 20 1 is a schematic diagram of the structure of an electronic device 100 according to an embodiment of the present application. The electronic device 100 includes an antenna device 10 and a housing 20 according to any of the above embodiments. The antenna device 10 is disposed in the housing 20.

[0087] In some embodiments, Fig. 20 As shown, the electronic device 100 further includes a camera 30. The camera 30 is disposed on the housing 20. The camera 30 is spaced apart from the antenna device 10. The camera 30 may be a front camera or a rear camera.

[0088] In the description of this application, it should be understood that terms such as "first" and "second" are only used to distinguish similar objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0089] It should be pointed out that in the embodiments of the present application, “electrical connection” can be a direct connection between two electrical components to achieve electrical connection, or it can be an indirect connection to achieve electrical connection.

[0090] The antenna device and electronic device provided in the embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. An antenna device, characterized in that: include: A first antenna unit, comprising a feeding point, wherein the feeding point is used to feed an excitation signal to excite the first antenna unit to generate a first resonance; The second antenna unit is a loop antenna, a gap is formed between the second antenna unit and the first antenna unit, the second antenna unit is electromagnetically coupled to the first antenna unit through the gap, and the excitation signal is also used to excite the second antenna unit and the first antenna unit to jointly generate a second resonance.

2. The antenna device according to claim 1, characterized in that: The second antenna unit comprises a first end and a second end opposite to each other, the first end faces the first antenna unit, the slot is located between the first end and the first antenna unit, and the second end faces away from the first antenna unit; The first end and the second end are both grounded, so that the second antenna unit forms a loop antenna.

3. The antenna device according to claim 1, characterized in that: The second resonance generates a first resonance current on the first antenna unit and generates a second resonance current on the second antenna unit, and the intensity of the second resonance current is greater than the intensity of the first resonance current.

4. The antenna device according to any one of claims 1 to 3, characterized in that: The first antenna unit is a monopole antenna, and the center frequency of the first resonance is smaller than the center frequency of the second resonance.

5. The antenna device according to claim 4, characterized in that: The first antenna unit comprises a third end and a fourth end opposite to each other, the third end faces away from the second antenna unit, the fourth end faces the second antenna unit, and the gap is located between the fourth end and the second antenna unit; The feeding point is located at the third end, and the fourth end is a free end, so that the first antenna unit forms a monopole antenna, and the first resonance is a quarter-wavelength resonance from the feeding point to the fourth end.

6. The antenna device according to any one of claims 1 to 3, characterized in that: The first antenna unit is an IFA antenna; The excitation signal is also used to excite the first antenna unit to generate a third resonance, the center frequency of the first resonance is less than the center frequency of the third resonance, and the center frequency of the second resonance is between the center frequency of the first resonance and the center frequency of the third resonance.

7. The antenna device according to claim 6, characterized in that: The first antenna unit comprises a third end and a fourth end opposite to each other, the third end faces away from the second antenna unit, the fourth end faces the second antenna unit, and the gap is located between the fourth end and the second antenna unit; The first antenna unit further includes a grounding point, the grounding point is grounded, the grounding point is located at the third end, the feeding point is located between the third end and the fourth end, and the fourth end is a free end, so that the first antenna unit forms an IFA antenna; The first resonance is a quarter-wavelength resonance from the ground point to the fourth end, and the third resonance is a quarter-wavelength resonance from the feeding point to the fourth end.

8. The antenna device according to any one of claims 1 to 3, characterized in that: Also includes: A feed source, electrically connected to the feeding point, and used for providing the excitation signal; A first matching module is connected between the feed source and the feeding point, and is used for performing impedance matching on the first antenna unit.

9. The antenna device according to claim 2, characterized in that: Also includes: a second matching module, wherein the first end is grounded through the second matching module, and the second matching module is used to adjust the frequency of the second resonance; and / or A third matching module, the second end is grounded through the third matching module, and the third matching module is used to adjust the frequency of the second resonance.

10. An electronic device, characterized in that: include: case; An antenna device is arranged on the shell, and the antenna device is the antenna device according to any one of claims 1 to 9.

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