Antenna device and electronic equipment

Abstract

According to the antenna device and the electronic equipment, a first radiating body and a second radiating body of the antenna device are arranged at an interval, a second tuning module is electrically connected to the second radiating body, and a first tuning module is electrically connected between a first feed source and the first radiating body; when the second tuning module is tuned and the first tuning module is in a first state of a first tuning mode, the first radiator and the second radiator support a first wireless signal, a first frequency band and a second wireless signal of a second frequency band; and when the second tuning module performs tuning and the first tuning module is in a second state of the second tuning mode, the first radiator and the second radiator support the first wireless signal, the first frequency band and the second wireless signal of the third frequency band. Therefore, the first wireless signal has relatively stable radiation performance, and the antenna device can be miniaturized.

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] With the development of communication technology, electronic devices such as smart phones can realize more and more functions, the communication modes of electronic devices are more diversified, and the number of antenna radiators installed inside electronic devices is also increasing.

[0003] In the related art, antenna radiators supporting different wireless signals are often provided separately, which requires the electronic device to be provided with more antenna radiators, which not only increases the production cost of the electronic device, but also is not conducive to the miniaturization design of the electronic device. Summary of the invention

[0004] The present application provides an antenna device and an electronic device, and the electronic device can achieve miniaturized design.

[0005] In a first aspect, the present application provides an antenna device, including:

[0006] A first radiator, comprising a first end and a second end, and a first feeding point arranged between the first end and the second end, wherein the second end is grounded;

[0007] a first feed source, electrically connected to the first feed point;

[0008] A first tuning module, electrically connected between the first feed source and the first feeding point;

[0009] A second radiator includes a third end and a fourth end, and an electrical connection point disposed between the third end and the fourth end, wherein the third end is spaced apart from the first end, and the fourth end extends in a direction away from the first radiator and is grounded; and

[0010] A second tuning module, one end of which is electrically connected to the electrical connection point and the other end is grounded; wherein,

[0011] In a first state where the second tuning module is tuning and the first tuning module is in a first tuning mode, the first feed source is used to excite the first radiator and the second radiator to support at least one of a first wireless signal, a second wireless signal in a first frequency band, and a second wireless signal in a second frequency band;

[0012] In a second state in which the second tuning module is tuning and the first tuning module is in a second tuning mode, the first feed source is used to excite the first radiator and the second radiator to support at least one of the first wireless signal, the second wireless signal in the first frequency band, and the second wireless signal in a third frequency band, and the third frequency band is different from the frequencies of the first frequency band, the second frequency band, and the first wireless signal.

[0013] In a second aspect, the present application further provides an antenna device, including:

[0014] A first radiator comprises a first end and a second end, and a first feeding point arranged between the first end and the second end, wherein the second end is grounded;

[0015] a first feed source, electrically connected to the first feed point;

[0016] a second radiator, comprising a third end and a fourth end, and an electrical connection point and a second feeding point arranged between the third end and the fourth end, the third end being spaced apart from the first end, the fourth end extending in a direction away from the first radiator and being grounded, and the second feeding point being located between the electrical connection point and the fourth end;

[0017] A second feed source electrically connected to the second feed point; and

[0018] A band-stop circuit, wherein the band-stop circuit is connected in series between the second feed source and the second feeding point; wherein,

[0019] The first feed source is used to excite the first radiator and the second radiator to support a first wireless signal, the second feed source is used to excite the second radiator to generate a resonant mode and support a second wireless signal in a fourth frequency band, and the band-stop circuit is used to cut off the multi-frequency signal corresponding to the multi-frequency resonance mode of the resonant mode, and the frequency band range of the multi-frequency signal at least partially overlaps with the frequency band range of the first wireless signal.

[0020] In a third aspect, the present application also provides an electronic device, comprising the antenna device as described above.

[0021] The antenna device and electronic device of the present application, regardless of whether the first tuning module is in the first tuning mode and the first tuning module and the second tuning module are in the first state, or the first tuning module is in the second tuning mode and the first tuning module and the second tuning module are in the second state, the first feed source can excite the first radiator and the second radiator to support the first wireless signal and the second wireless signal of the first frequency band, the first wireless signal and the second wireless signal of the first frequency band can be in a constant state and are basically not affected by the tuning mode of the first tuning module, and the first wireless signal and the second wireless signal of the first frequency band have relatively stable radiation performance. At the same time, when the first tuning module is in the first tuning mode, the first feed source can also excite the first radiator and the second radiator to support the second wireless signal of the second frequency band; when the first tuning module is in the second tuning mode, the first feed source can excite the first radiator and the second radiator to support the second wireless signal of the third frequency band; thus, the antenna device of the embodiment of the present application can cover at least three frequency bands of the second wireless signal. The antenna device of the embodiment of the present application can support multiple wireless signals through two radiators, and the radiators are multiplexed, so as to realize the miniaturization design of the antenna device; at the same time, the antenna device can realize that when the second wireless signal switches between different frequency bands, the first wireless signal and the second wireless signal of the first frequency band always maintain stable radiation performance, thereby improving the communication quality when the first wireless signal and the second wireless signal coexist. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 A first structural schematic diagram of an antenna device provided in an embodiment of the present application.

[0024] Figure 2 for Figure 1 An electrical connection schematic diagram of the antenna device shown.

[0025] Figure 3 for Figure 1 A first current distribution schematic diagram of the antenna device is shown.

[0026] Figure 4 for Figure 1 A second current distribution diagram of the antenna device is shown.

[0027] Figure 5 for Figure 1 A third current distribution schematic diagram of the antenna device is shown.

[0028] Figure 6 A second structural schematic diagram of the antenna device provided in an embodiment of the present application.

[0029] Figure 7 for Figure 6 A schematic diagram of current distribution of the antenna device shown.

[0030] Figure 8 for Figure 6 An electrical connection schematic diagram of the antenna device shown.

[0031] Fig. 9 A third structural schematic diagram of the antenna device provided in an embodiment of the present application.

[0032] Fig.10 A fourth structural schematic diagram of the antenna device provided in an embodiment of the present application.

[0033] Fig.11 for Fig.10 The first antenna parameter curve diagram of the antenna device is shown.

[0034] Fig.12 for Fig.10 A schematic diagram of a second antenna parameter curve of the antenna device is shown.

[0035] Fig.13 for Fig.10 A third antenna parameter curve schematic diagram of the antenna device is shown.

[0036] Fig.14 for Fig.10 A fourth antenna parameter curve schematic diagram of the antenna device is shown.

[0037] Fig.15 for Fig.10 A fifth antenna parameter curve schematic diagram of the antenna device is shown.

[0038] Fig.16 for Fig.10 The sixth antenna parameter curve diagram of the antenna device is shown.

[0039] Fig.17 A first structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0040] Fig.18 A second structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The following will be combined with the embodiments of this application Figures 1 to 18, the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not 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.

[0042] The embodiments of the present application provide an antenna device and an electronic device. The antenna device can realize wireless communication functions. For example, the antenna device can support the transmission of Wireless Fidelity (Wi-Fi) signals, Global Positioning System (GPS) signals, third-generation mobile communication technology (3rd-Generation, 3G), fourth-generation mobile communication technology (4th-Generation, 4G), fifth-generation mobile communication technology (5th-Generation, 5G), near field communication (NFC) signals, Bluetooth (BT) signals, ultra-wideband communication (Ultra Wide Band, UWB) signals, etc.

[0043] Please refer to Figure 1 , Figure 1 The first structural diagram of the antenna device 100 provided in the embodiment of the present application is as follows: The antenna device 100 includes a first radiator 110 , a second radiator 120 , a first feed source 130 , a first tuning module 140 and a second tuning module 150 .

[0044] The first radiator 110 includes a first end 111 and a second end 112. The second end 112 can be electrically connected to the ground system 160 to achieve grounding, so that the second end 112 can be the ground end of the first radiator 110, and the first end 111 can be the free end / end / open end of the first radiator 110. The first radiator 110 also includes a first feeding point 113. The first feeding point 113 can be arranged between the first end 111 and the second end 112. The first feed source 130 can be directly or indirectly electrically connected to the first feeding point 113. The first feed source 130 can provide an excitation signal to the first radiator 110 to excite at least one of the first radiator 110 and the second radiator 120 to support a wireless signal. The second radiator 120 may be disposed on a side of the first end 111 of the first radiator 110 away from the second end 112. The second radiator 120 includes a third end 121 and a fourth end 122. The third end 121 may be spaced apart from the first end 111 to form a coupling gap. The fourth end 122 may extend in a direction away from the first radiator 110. The fourth end 122 may be electrically connected to the ground system 160 to achieve grounding, so that the fourth end 122 is the ground end of the second radiator 120 and the third end 121 is the free end / end / open end of the second radiator 120. The second radiator 120 and the first radiator 110 may form a co-aperture antenna.

[0045] It is understandable that the ground system 160 can form a common ground of the antenna device 100 or the electronic device. The ground system 160 can be a plane or structure with zero potential. Among them, the ground system 160 can be formed by a conductor, a printed circuit or a metal printed layer in the antenna device 100 or the electronic device; the ground system 160 can be formed on a circuit board, a small board or other supporting board of the antenna device 100 or the electronic device; or, the ground system 160 can also be formed on the frame of the antenna device 100 or the electronic device. The embodiment of the present application does not limit the specific setting position of the ground system 160.

[0046] The first tuning module 140 can be electrically connected between the first feed source 130 and the first feed point 113, and the first tuning module 140 can change the electrical length of the first radiator 110. The second tuning module 150 can be electrically connected to the second radiator 120. For example, the second radiator 120 is also provided with an electrical connection point 123, and the electrical connection point 123 can be provided between the third end 121 and the fourth end 122. One end of the second tuning module 150 can be directly or indirectly electrically connected to the electrical connection point 123, and the other end of the second tuning module 150 can be electrically connected to the ground system 160 to achieve grounding. The second tuning module 150 can change the electrical length of the second radiator 120.

[0047] It is understood that the electrical length refers to the length of the radiator when it radiates a signal. The electrical length of the radiator can be greater than, less than or equal to its branch length. The electrical length of the radiator can be associated with the frequency supported by the radiator. When the electrical length of the radiator is longer, the radiator can support wireless signals with lower frequencies; when the electrical length of the radiator is shorter, the radiator can support wireless signals with higher frequencies. The radiator can change its electrical length by electrically connecting circuits with different impedances, thereby adjusting the frequency of the supported wireless signal.

[0048] It can be understood that the first tuning module 140 and the second tuning module 150 can include but are not limited to multiple tuning branches. When the first tuning module 140 and the second tuning module 150 select different tuning branches and make the first tuning module 140 and the second tuning module 150 in different tuning modes, the first tuning module 140 and the second tuning module 150 can change the resonant mode of at least one of the first radiator 110 and the second radiator 120, thereby tuning the frequency of the wireless signal supported by the first radiator 110 and the second radiator 120.

[0049] Exemplarily, when the second tuning module 150 is tuning and the first tuning module 140 is in the first state of the first tuning mode, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support at least one of the first wireless signal, the second wireless signal in the first frequency band, and the second wireless signal in the second frequency band.

[0050] As another example, when the second tuning module 150 is tuning and the first tuning module 140 is in the second state of the second tuning mode, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support at least one of the first wireless signal, the second wireless signal in the first frequency band, and the second wireless signal in the third frequency band. The third frequency band is different from the frequency of the first frequency band, the frequency of the second frequency band, and the frequency of the first wireless signal.

[0051] It is understandable that the first tuning module 140 can be in the first tuning mode or in the second tuning mode by selecting different tuning branches to be electrically connected between the first feed source 130 and the first feeding point 113. Of course, the first tuning module 140 can also control a certain tuning branch to switch between different states so that the first tuning module 140 is in the first tuning mode or in the second tuning mode. The embodiment of the present application does not limit the specific manner in which the first tuning module 140 is in different tuning modes.

[0052] In the antenna device 100 of the embodiment of the present application, no matter the first tuning module 140 is in the first tuning mode and the first tuning module 140 and the second tuning module 150 are in the first state, or the first tuning module 140 is in the second tuning mode and the first tuning module 140 and the second tuning module 150 are in the second state, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support the first wireless signal and the second wireless signal of the first frequency band, the first wireless signal can be in a constant state and is basically not affected by the tuning mode of the first tuning module 140, and the first wireless signal and the second wireless signal of the first frequency band have relatively stable radiation performance. At the same time, when the first tuning module 140 is in the first tuning mode, the first feed source 130 can also excite the first radiator 110 and the second radiator 120 to support the second wireless signal of the second frequency band; when the first tuning module 140 is in the second tuning mode, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support the second wireless signal of the third frequency band; thus, the antenna device 100 of the embodiment of the present application can at least cover three frequency bands of the second wireless signal, and can basically cover the full frequency band of the second wireless signal. The antenna device 100 of the embodiment of the present application can support multiple wireless signals through two radiators, and the radiators can be multiplexed, so that the miniaturized design of the antenna device 100 can be realized; at the same time, the antenna device 100 can realize that when the second wireless signal switches between different frequency bands, the first wireless signal and the second wireless signal of the first frequency band always maintain stable radiation performance, thereby improving the communication quality when the first wireless signal and the second wireless signal coexist.

[0053] Among them, please refer to Figure 2 , Figure 2 for Figure 1 The first tuning module 140 may include a first switching circuit 141 , a first frequency selection circuit 1421 and a second frequency selection circuit 1422 .

[0054] The first frequency selection circuit 1421 and the second frequency selection circuit 1422 can be sequentially connected in series between the first feed source 130 and the first feeding point 113. The first switching circuit 141 at least includes a first inductive load branch 1411 of zero ohm, one end of which can be electrically connected between the first frequency selection circuit 1421 and the second frequency selection circuit 1422, and the other end of the first inductive load branch 1411 can switchably connect or disconnect the electrical connection between the second frequency selection circuit 1422 and the first feeding point 113, so that the first inductive load branch 1411 can be electrically connected to both ends of the second frequency selection circuit 1422, or the first inductive load branch 1411 can disconnect the electrical connection with both ends of the second frequency selection circuit 1422.

[0055] It can be understood that the first switching circuit 141 can conduct the other end of the first inductive load branch 1411 to be electrically connected between the second frequency selection circuit 1422 and the first feeding point 113, so that the first tuning module 140 is in the first tuning mode. The first switching circuit 141 can also disconnect the electrical connection between the other end of the first inductive load branch 1411 and the second frequency selection circuit 1422 and the first feeding point 113, so that the first tuning module 140 is in the second tuning mode.

[0056] When the first switching circuit 141 turns on and the other end of the first inductive load branch 1411 is electrically connected between the second frequency selection circuit 1422 and the first feeding point 113, so that the first inductive load branch 1411 is in the first tuning mode electrically connected to both ends of the second frequency selection circuit 1422, and in the first state of tuning by the second tuning module 150, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support at least one of the first wireless signal, the second wireless signal in the first frequency band, and the second wireless signal in the second frequency band.

[0057] When the first switching circuit 141 disconnects the electrical connection between the other end of the first inductive load branch 1411 and the second frequency selection circuit 1422 and the first feeding point 113, so that the first inductive load branch 1411 is in the second tuning mode in which the electrical connection with both ends of the second frequency selection circuit 1422 is disconnected, and the second tuning module 150 is in the second state for tuning, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support at least one of the first wireless signal, the second wireless signal in the first frequency band, and the second wireless signal in the third frequency band.

[0058] It can be understood that the first frequency selection circuit 1421 and the second frequency selection circuit 1422 can be bandpass circuits compared to signals in certain frequency bands. When the first inductive load branch 1411 is electrically connected to both ends of the second frequency selection circuit 1422, the second frequency selection circuit 1422 can be short-circuited, the electrical length of the first radiator 110 becomes shorter, and the first radiator 110 can support wireless signals with higher frequencies. When the first inductive load branch 1411 is disconnected from the electrical connection with both ends of the second frequency selection circuit 1422, the second frequency selection circuit 1422 is not short-circuited, and compared to the short-circuited state of the second frequency selection circuit 1422, the electrical length of the first radiator 110 becomes longer, and the first radiator 110 can support wireless signals with lower frequencies.

[0059] It is understandable that the first wireless signal may be different from the second wireless signal. For example, the first wireless signal and the second wireless signal may be different types of wireless signals. Exemplarily, the first wireless signal may be, but is not limited to, a 2.4G Wi-Fi signal, a 5G Wi-Fi signal, a BT signal, a GPS-L1 band signal, a GPS-L5 band signal, and the like. The second wireless signal may be, but is not limited to, a cellular signal such as a 5G full-band signal or a 4G full-band signal. Exemplarily, the first frequency band may be, but is not limited to, an N40 band, an N41 band, a B40 band, or a B41 band, the second frequency band may be, but is not limited to, an N78 band, an N79 band, and the third frequency band may be, but is not limited to, a B1 band, a B3 band, an N1 band, and an N3 band. Of course, the first wireless signal and the second wireless signal may also be other signals, which are not limited in the embodiments of the present application.

[0060] It is understood that the frequency selection circuit refers to a circuit structure that uses the principle of circuit phase-frequency characteristics and phase-amplitude characteristics to output an input signal within a certain frequency range. The frequency selection circuit is also called a filter. The frequency selection circuit can filter out certain frequency components in the excitation signal, or amplify certain frequency components. Common frequency selection circuits may include capacitor elements and inductor elements connected in series. The embodiments of the present application do not limit the specific structure of the frequency selection circuit.

[0061] It is understandable that an inductive load branch refers to a circuit or structure that allows current to flow, but the current lags behind the voltage. The inductive load branch is a circuit that mainly uses an inductive reactance element (such as an inductor) as the main load. In an AC circuit, when current passes through an inductor, an induced electromotive force is generated in the inductor, resulting in the storage and release of energy in the circuit, so it is called an inductive load. Typical inductive loads include transformers, inductors and other components. When the inductance value of the inductor element is zero, the inductor element with a zero inductance value can be the zero-ohm first inductive load branch 1411 of the embodiment of the present application.

[0062] Among them, when the first switching circuit 141 turns on and the other end of the first inductive load branch 1411 is electrically connected between the second frequency selection circuit 1422 and the first feeding point 113, so that the first inductive load branch 1411 is in the first tuning mode electrically connected to the two ends of the second frequency selection circuit 1422, the first inductive load branch 1411 of the first switching circuit 141 is constantly equivalent to a series inductive load for the first frequency band, the second frequency band and the first wireless signal with higher frequencies. Since the first inductive load branch 1411 is zero ohm, the second frequency selection circuit 1422 can be short-circuited at this time, and the first feed source 130 is equivalent to directly feeding the first radiator 110. Under the joint action of the second tuning module 150, the second radiator 120 can be used as a parasitic branch of the first radiator 110, and the two can jointly excite to generate a resonant mode and support at least one of the first wireless signal, the second wireless signal in the first frequency band, and the second wireless signal in the second frequency band.

[0063] For example, please refer to Figure 3 , Figure 3 for Figure 1 The first current distribution diagram of the antenna device 100 is shown. When the first switching circuit 141 conducts the electrical connection between the other end of the first inductive load branch 1411 and the second frequency selection circuit 1422 and the first feeding point 113, so that the first inductive load branch 1411 is in the first tuning mode electrically connected to the two ends of the second frequency selection circuit 1422, and the second tuning module 150 performs tuning in the first state, the first inductive load branch 1411 can be electrically connected to the two ends of the second frequency selection circuit 1422, and the first feed source 130 can excite the first radiator 110 and the second radiator 120 to jointly generate a first resonance mode, and the first resonance mode can form a first resonance current I1 flowing from the first feeding point 113 to the electrical connection point 123 on the first radiator 110 and the second radiator 120, so that the first resonance mode can support at least one of the first wireless signal and the second wireless signal of the first frequency band.

[0064] It can be understood that the first feed source 130 can excite the radiation section between the first feeding point 113 and the first end 111 of the first radiator 110 as the main radiation section, and the radiation section between the third end 121 and the electrical connection point 123 of the second radiator 120 as the auxiliary radiation section to jointly support the first wireless signal in the first resonance mode. The first resonant current I1 generated by the excitation of the first resonance mode can flow in the direction from the first feeding point 113 to the first end 111, and be electromagnetically coupled to the second radiator 120, and can be returned to the ground from the second tuning module 150 electrically connected to the electrical connection point 123. The current distribution density of the first resonant current I1 on the first radiator 110 can be greater than its current distribution density on the second radiator 120, so that the radiation section between the first feeding point 113 and the first end 111 serves as the main radiation section.

[0065] It can be understood that the first inductive load branch 1411 of the first switching circuit 141 is constantly equivalent to a series inductive load for the first wireless signal with a higher frequency and the second wireless signal in the first frequency band. The second frequency selection circuit 1422 can be short-circuited, and the first feed source 130 is equivalent to directly feeding the first radiator 110. At this time, with the cooperation of the second tuning module 150, the second radiator 120 can form a parasitic mode in a quarter-wavelength mode. The parasitic mode can enhance the radiation efficiency of the first radiator 110 in supporting the first wireless signal and the second wireless signal, thereby improving the radiation efficiency of the antenna device 100.

[0066] When the first frequency band of the second wireless signal is close to the frequency range of the first wireless signal (the frequency ranges of the two on the spectrum at least partially overlap), in the first state, the first feed source 130 can also excite the radiation segment between the first feeding point 113 and the first end 111 as the main radiation segment, and the radiation segment between the third end 121 and the electrical connection point 123 as the auxiliary radiation segment to jointly support the second wireless signal of the first frequency band.

[0067] It is understandable that the first frequency band may also be different from the frequency of the first wireless signal, for example, the two are completely separated, or the center frequencies of the two are different in the spectrum, in which case the first feed source 130 may also support the second wireless signal of the first frequency band by other resonant mode excitation. The embodiments of the present application are not limited to this.

[0068] It can be understood that the first feed source 130 can also excite the first radiator 110 and the second radiator 120 to support the first wireless signal with other resonant modes. For example, but not limited to, the entire second radiator 120 can serve as an auxiliary radiation segment and jointly support the first wireless signal with the first radiator 110. The embodiment of the present application does not limit the specific resonant modes of the first wireless signal and the second wireless signal in the first frequency band.

[0069] For further example, please refer to Figure 4 , Figure 4 for Figure 1The second current distribution diagram of the antenna device 100 is shown. When the first switching circuit 141 conducts the electrical connection between the other end of the first inductive load branch 1411 and the second frequency selection circuit 1422 and the first feeding point 113, so that the first inductive load branch 1411 is in the first tuning mode electrically connected to the two ends of the second frequency selection circuit 1422, and the second tuning module 150 performs tuning in the first state, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to jointly generate the second resonance mode, the second resonance mode forms a current zero point A between the electrical connection point 123 and the fourth end 122, and the second resonance mode can form a second resonance current I2 flowing from the first feeding point 113 to the current zero point A and from the fourth end 122 to the current zero point A, so that the second resonance mode can support the second wireless signal of the second frequency band.

[0070] It can be understood that the first feed source 130 can excite the radiation section between the first feed point 113 and the first end 111 as the main radiation section, and the radiation section between the third end 121 and the fourth end 122 (i.e., the entire second radiator 120) as the auxiliary radiation section in a three-quarter wavelength mode to jointly support the second wireless signal of the second frequency band in a second resonance mode. The second resonant current I2 generated by the second resonance mode excitation can flow in the direction from the first feed point 113 to the first end 111, and electromagnetically couple to the second radiator 120 and flow on the second radiator 120, and the current distribution density of the second resonant current I2 on the first radiator 110 can be greater than its current distribution density on the second radiator 120.

[0071] It is understandable that the second frequency band may be different from the first frequency band. For example, the second frequency band may be higher than the first frequency band. The first inductive load branch 1411 of the first switching circuit 141 is equivalent to a series inductive load for the second frequency band with a higher frequency, the second frequency selection circuit 1422 may be short-circuited, and the first feed source 130 is equivalent to directly feeding the first radiator 110. At this time, with the cooperation of the second tuning module 150, the second radiator 120 can form a parasitic mode in a three-quarter wavelength mode, and the parasitic mode can enhance the radiation efficiency of the first radiator 110 supporting the second wireless signal of the second frequency band.

[0072] It can be understood that the first feed source 130 can independently excite the first radiator 110 and the second radiator 120 to support the first wireless signal, the second wireless signal in the first frequency band, or the second wireless signal in the second frequency band. The first feed source 130 can also simultaneously excite the first radiator 110 and the second radiator 120 to support any two or three of the first wireless signal, the second wireless signal in the first frequency band, and the second wireless signal in the second frequency band under the action of devices such as a combiner and a power divider. The embodiments of the present application are not limited to this.

[0073] It should be noted that the first feed source 130 can also excite the first radiator 110 and the second radiator 120 to support the second wireless signal in the second frequency band with other resonant modes. The embodiment of the present application does not limit the specific resonant mode of the second wireless signal in the second frequency band.

[0074] Among them, when the first switching circuit 141 disconnects the electrical connection between the other end of the first inductive load branch 1411 and the second frequency selection circuit 1422 and the first feeding point 113, so that the first inductive load branch 1411 is in the second tuning mode of disconnecting the electrical connection with the two ends of the second frequency selection circuit 1422, and the second tuning module 150 performs tuning, the first inductive load branch 1411 disconnects the electrical connection with the two ends of the second frequency selection circuit 1422, and the first inductive load branch 1411 of the first switching circuit 141 is equivalent to a series capacitive load for the third frequency band with a low frequency, the second frequency selection circuit 1422 is not short-circuited, and the first feed source 130 is equivalent to coupling and feeding the first radiator 110. Under the joint action of the second tuning module 150, the second radiator 120 can be used as a parasitic branch of the first radiator 110, and the two can jointly excite to generate a resonant mode and support a second wireless signal in the third frequency band.

[0075] For example, please refer to Figure 5 , Figure 5 for Figure 1 The third current distribution diagram of the antenna device 100 is shown. The first switching circuit 141 disconnects the electrical connection between the other end of the first inductive load branch 1411 and the second frequency selection circuit 1422 and the first feeding point 113, so that the first inductive load branch 1411 is in the second tuning mode in which the electrical connection with both ends of the second frequency selection circuit 1422 is disconnected, and the second tuning module 150 performs tuning. The first feed source 130 can excite the first radiator 110 and the second radiator 120 to generate a third resonance mode, and the third resonance mode can form a third resonance current I3 flowing from the second end 112 to the electrical connection point 123 on the first radiator 110 and the second radiator 120, so that the third resonance mode can support a second wireless signal in the third frequency band.

[0076] It can be understood that the first feed source 130 can excite the radiation section between the second end 112 and the first end 111 of the first radiator 110 (i.e., the entire first radiator 110) as the main radiation section, and the radiation section between the third end 121 and the electrical connection point 123 of the second radiator 120 as the auxiliary radiation section to jointly support the second wireless signal of the third frequency band in the third resonance mode. The third resonant current I3 generated by the third resonance mode excitation can flow in the direction from the second end 112 to the first end 111, and electromagnetically couple to the second radiator 120 and return to the ground from the second tuning module 150. The current distribution density of the third resonant current I3 on ​​the first radiator 110 can be greater than its current distribution density on the second radiator 120.

[0077] It can be understood that the third frequency band may be different from the first frequency band and the second frequency band. For example, the third frequency band may be lower than the first frequency band and the second frequency band. The first inductive load branch 1411 of the first switching circuit 141 is equivalent to a series capacitive load for the third frequency band with a lower frequency. The first switching circuit 141 may be equivalent to an open circuit. The first feed source 130 is equivalent to coupling and feeding the first radiator 110. At this time, with the cooperation of the second tuning module 150, the second radiator 120 may form a parasitic mode in a quarter-wavelength mode. The parasitic mode may enhance the radiation efficiency of the first radiator 110 in supporting the second wireless signal of the third frequency band.

[0078] It should be noted that the first feed source 130 can also excite the first radiator 110 and the second radiator 120 to support the second wireless signal in the third frequency band in other resonance modes, which is not limited in this embodiment of the present application.

[0079] It should be noted that since the first inductive load branch 1411 of the first switching circuit 141 is constantly equivalent to a series inductive load for the first wireless signal with a higher frequency and the second wireless signal of the first frequency band, when the first switching circuit 141 disconnects the electrical connection between the other end of the first inductive load branch 1411 and the second frequency selection circuit 1422 and the first feeding point 113, so that the first inductive load branch 1411 is in the second tuning mode in which the electrical connection with both ends of the second frequency selection circuit 1422 is disconnected and the second tuning module 150 is tuned, the first feed source 130 can also excite the first radiator 110 and the second radiator 120 to jointly generate a first resonant mode, and the first resonant mode can form a first resonant current I1 on the first radiator 110 and the second radiator 120 flowing from the first feeding point 113 to the electrical connection point 123, so that the first resonant mode can support at least one of the first wireless signal and the second wireless signal of the first frequency band.

[0080] In the antenna device 100 of the embodiment of the present application, no matter the first inductive load branch 1411 is electrically connected to the two ends of the second frequency selection circuit 1422 so that the first tuning module 140 is in the first tuning mode, or the first inductive load branch 1411 is disconnected from the two ends of the second frequency selection circuit 1422 so that the first tuning mode 140 is in the second tuning mode, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support the first wireless signal and the second wireless signal of the first frequency band, the first wireless signal and the second wireless signal of the first frequency band can be in a constant state and are basically not affected by the state of the first inductive load branch 1411, and the first wireless signal and the second wireless signal of the first frequency band have relatively stable radiation performance. At the same time, when the first inductive load branch 1411 is electrically connected to the two ends of the second frequency selection circuit 1422, the first feed source 130 can also excite the first radiator 110 and the second radiator 120 to support the second wireless signal of the first frequency band and the second frequency band; when the first inductive load branch 1411 is disconnected from the electrical connection with the two ends of the second frequency selection circuit 1422, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support the second wireless signal of the third frequency band; thus, the antenna device 100 of the embodiment of the present application can at least cover the three frequency bands of the second wireless signal, and can basically cover the full frequency band of the second wireless signal. The antenna device 100 of the embodiment of the present application can support multiple wireless signals through two radiators, and the radiators can be multiplexed, so as to realize the miniaturization design of the antenna device 100; at the same time, the antenna device 100 can realize that when the second wireless signal switches between different frequency bands, the first wireless signal and the second wireless signal of the first frequency band always maintain stable radiation performance, thereby improving the communication quality when the first wireless signal and the second wireless signal coexist.

[0081] Please refer again to Figure 2 The first switching circuit 141 may also include multiple (two or more) load branches, for example, multiple first load branches 1412.

[0082] One end of each first load branch 1412 can switchably connect or disconnect the electrical connection between the second frequency selection circuit 1422 and the first feeding point 113, and the other end of each first load branch 1412 is grounded. The first switching circuit 141 switches between the plurality of first load branches 1412 to adjust the frequency range of the third frequency band.

[0083] It is understandable that each first load branch 1412 can be an inductive load branch or a capacitive load branch, and the first switching circuit 141 can include at least one load branch of the inductive load branch and the capacitive load branch. The so-called capacitive load branch refers to a circuit or structure that can prevent current from flowing, but the current is ahead of the voltage. A circuit in which a capacitive load branch mainly uses a capacitor as the main load. In an AC circuit, when a voltage acts on a capacitor, the capacitor accumulates charge to form an electric field, and releases the charge when the voltage changes, so it is called a capacitive load. A typical capacitive load includes a capacitor. Considering that the frequency range of the third frequency band is relatively low, the multiple first load branches 1412 of the first switching circuit 141 of the embodiment of the present application can all be inductive load branches to increase the electrical length of the second radiator 120.

[0084] It can be understood that the first switching circuit 141 can also include a switching switch, the input end of the switching switch can be electrically connected between the second frequency selection circuit 1422 and the first radiator 110, and the other end of the switching switch can be electrically connected to the first inductive load branch 1411 and each first load branch 1412 respectively, so as to select at least one load branch to work between the multiple first load branches 1412 and the first inductive load branch 1411. Of course, the first switching circuit 141 may also not include a switching switch, and the first inductive load branch 1411 and the multiple first load branches 1412 of the first switching circuit 141 may be branches with adjustable parameters, which can be turned on or off by changing their parameters. The embodiment of the present application does not limit the specific structure of the first switching circuit 141.

[0085] It is understandable that the switch, the plurality of first load branches 1412, and the first inductive load branch 1411 can be integrated in the same module so that the first switching circuit 141 can be an integrated circuit. Of course, the switch, the plurality of first load branches 1412, and the first inductive load branch 1411 can also be relatively independently arranged on the carrier board but are not limited to. The specific structure of the first switching circuit 141 is not limited in the embodiment of the present application.

[0086] The first switching circuit 141 of the embodiment of the present application includes a first inductive load branch 1411 and multiple first load branches 1412. The first switching circuit 141 can enable the wireless signal supported by the antenna device 100 to switch between the first frequency band, the second frequency band, and the third frequency band of the second wireless signal. The first switching circuit 141 can also control the antenna device 100 to support the second wireless signal of the first frequency band with different sub-bands, the second wireless signal of the second frequency band with different sub-bands, or the second wireless signal of the third frequency band with different sub-bands, so that the antenna device 100 can cover more wireless signals.

[0087] Among them, please refer to Figure 6, Figure 6 The second structural diagram of the antenna device 100 provided in the embodiment of the present application. The antenna device 100 may further include a second feed source 170 and a third tuning module 180 .

[0088] The second feed source 170 may be electrically connected to the second radiator 120. For example, the second radiator 120 may further include a second feed point 124, which is located between the electrical connection point 123 and the fourth end 122. The second feed source 170 may be directly or indirectly electrically connected to the second feed point 124. The third tuning module 180 may be electrically connected between the second feed source 170 and the second feed point 124. The third tuning module 180 may change the electrical length of the second radiator 120 to adjust the resonant mode of the second radiator 120. Under the action of the third tuning module 180, the second feed source 170 may excite the second radiator 120 to generate a fourth resonant mode and support a second wireless signal in a fourth frequency band.

[0089] It can be understood that the fourth frequency band may be different from the first frequency band, the second frequency band and the third frequency band. For example, in the frequency spectrum, the fourth frequency band may be lower than the first frequency band, the second frequency band and the third frequency band.

[0090] like Figure 7 As shown, Figure 7 for Figure 6 A current distribution diagram of the antenna device 100 is shown. The fourth resonance mode can form a fourth resonance current I4 flowing from the second feeding point 124 of the second radiator 120 to the fourth end 122 on the second radiator 170, so that the fourth resonance mode supports the second wireless signal of the fourth frequency band.

[0091] It can be understood that the second feed source 170 can excite the radiation section between the second feeding point 124 and the fourth end 122 of the second radiator 120 to support the second wireless signal in the fourth frequency band in a fourth resonance mode of a one-eighth wavelength mode, and the fourth resonance current I4 generated by the excitation of the fourth resonance mode can flow along the second feeding point 124 to the fourth end 122 and return to the ground from the fourth end 122.

[0092] It is understandable that when the fourth frequency band is a lower frequency band, the one-eighth wavelength mode can make the radiation branches of the second radiator 120 shorter when supporting the fourth frequency band, which can further realize the miniaturization design of the antenna device 100. It should be noted that the second feed source 170 can also excite the second radiator 120 to support the second wireless signal of the fourth frequency band in other radiation modes, which is not limited in the embodiment of the present application.

[0093] Please refer to Figure 8 , Figure 8 for Figure 6An electrical connection diagram of the antenna device 100 is shown. The third tuning module 180 includes a band-stop circuit 1821 .

[0094] The band-stop circuit 1821 is connected in series between the second feed source 170 and the second feeding point 124. The band-stop circuit 1821 can cut off the multi-frequency signal corresponding to the multi-frequency resonance mode of the fourth resonance mode when the second radiator 120 supports the fourth frequency band. The frequency band range of the multi-frequency signal at least partially overlaps with the frequency band range of the first wireless signal. The band-stop circuit 1821 can cut off the multi-frequency signal to avoid the multi-frequency signal from interfering with the first wireless signal.

[0095] It is understandable that the band-stop circuit 1821 is a circuit structure that can pass most frequency components but attenuate frequency components in a certain range to an extremely low level. For example, but not limited to, the band-stop circuit 1821 may include an inductive load element and a capacitive load element connected in parallel, or the resistance circuit may include an inductive load element and a capacitive load element connected in parallel to form a whole and then connected in series with a capacitive element to form a hybrid circuit. The embodiment of the present application does not limit the specific structure of the band-stop circuit 1821.

[0096] In the antenna device 100 of the embodiment of the present application, when the radiation section between the second feeding point 124 and the fourth end 122 of the second radiator 120 supports the second wireless signal of the fourth frequency band in a one-eighth wavelength mode, the resonance mode is the fundamental mode, and the resonance mode can also generate a multi-frequency resonance mode. If the multi-frequency signal corresponding to the multi-frequency resonance mode overlaps at least partially with the first wireless signal, the multi-frequency signal will interfere with the first wireless signal. The band-stop circuit 1821 of the embodiment of the present application can cut off the multi-frequency signal. When the second radiator 120 supports the second wireless signal of the fourth frequency band, the high-order mode generated by the resonance mode of the fourth frequency band will not fall within the band of the first wireless signal, which can avoid the generation of an efficiency pit for the first wireless signal. Therefore, when the second radiator 120 supports the fourth frequency band, the first wireless signal can also have a relatively stable radiation performance without generating an obvious efficiency pit.

[0097] Please refer again to Figure 8 , the third tuning module 180 may further include a second switching circuit 181 .

[0098] One end of the second switching circuit 181 is directly or indirectly electrically connected between the band-stop circuit 1821 and the second feeding point 124, and the other end of the second switching circuit 181 is electrically connected to the ground system 160 to achieve grounding. The second switching circuit 181 can adjust the frequency range of the fourth frequency band.

[0099] It can be understood that the second switching circuit 181 may include, but is not limited to, multiple (two or more) load branches. For example, the second switching circuit 181 may include multiple second load branches 1811, and one end of each second load branch 1811 can switchably connect or disconnect the electrical connection with the area between the band-stop circuit 1821 and the second feed point 124, and one end of each second load branch 1811 can be grounded. The second switching circuit 181 can switch between multiple second load branches 1811, so that under the switching action of the second switching circuit 181, the second feed source 170 can excite the second radiator 120 to support the second wireless signal of the fourth frequency band of different sub-bands. For example, when the second wireless signal of the fourth frequency band is a low-frequency signal of 5G, under the action of the second switching circuit 181, the second radiator 120 can support wireless signals in the frequency band range of 600MHz to 1GHz. Of course, the second wireless signal of the fourth frequency band is not limited to this, and the embodiment of the present application does not limit this.

[0100] It is understandable that the multiple second load branches 1811 of the second switching circuit 181 may include, but are not limited to, at least one of an inductive load branch and a capacitive load branch; the second switching circuit 181 may also include, but is not limited to, a switching switch, and of course, the second switching circuit 181 may not include a switching switch. The embodiment of the present application does not limit the specific structure of the second switching circuit 181.

[0101] The third tuning module 180 of the embodiment of the present application includes a second switching circuit 181, which can control the antenna device 100 to support a second wireless signal of a fourth frequency band with a different sub-frequency band, so that the antenna device 100 can support more wireless signals.

[0102] Based on the structure of the antenna device 100 described above, the embodiment of the present application further provides a specific structure of a first tuning module 140, a second tuning module 150, and a third tuning module 180. Fig. 9 and Fig.10 , Fig. 9 This is a third structural schematic diagram of the antenna device 100 provided in an embodiment of the present application.

[0103] The first frequency selection circuit 1421 of the first tuning module 140 includes a first capacitor C1 and a first inductor L1, and the second frequency selection circuit 1422 includes a second capacitor C2 and a second inductor L2. The first capacitor C1, the first inductor L1, the second inductor L2 and the second capacitor C2 can be connected in series between the first feed source 130 and the first feeding point 113. The first tuning module 140 can also include a first tuning branch 1423, and the first tuning branch 1423 can include a third capacitor C3 and a third inductor L3. One end of the third capacitor C3 can be electrically connected between the first inductor L1 and the second inductor L2, and the other end of the third capacitor C3 can be electrically connected to one end of the third inductor L3. The other end of the third inductor L3 is grounded. The first inductive load branch 1411 of the first switching circuit 141 of the first tuning module 140 can be a fourth inductor L4 with zero ohm. The first switching circuit 141 can include three first load branches 1412. For example, the first switching circuit 141 can include a fifth inductor L5, a sixth inductor L6 and a seventh inductor L7; one end of the fourth inductor L4 can be electrically connected between the first frequency selection circuit 1421 and the second frequency selection circuit 1422, and the other end of the fourth inductor L4 can be electrically connected between the second frequency selection circuit 1422 and the first feeding point 113 through the first switching circuit 141; one end of the fifth inductor L5, the sixth inductor L6 and the seventh inductor L7 is grounded, and the other end can be electrically connected between the second frequency selection circuit 1422 and the first feeding point 113 through the first switching circuit 141. The first switching circuit 141 can choose to conduct the two ends of the first inductive load branch 1411 of zero ohm to be electrically connected to the two ends of the second frequency selection circuit 1422 respectively and connected in parallel with the second frequency selection circuit 1422 to short-circuit the second frequency selection circuit 1422; the first switching circuit 141 can also disconnect the electrical connection between the two ends of the first inductive load branch 1411 of zero ohm and the two ends of the second frequency selection circuit 1422. The first switching circuit 141 can also choose to conduct different first load branches 1412 so that the first radiator 110 and the second radiator 120 support wireless signals of different frequency bands or sub-bands. Among them, the first tuning module 140 can also include a second tuning branch 1424, and the second tuning branch 1424 can include but is not limited to an eighth inductor L8, one end of the eighth inductor L8 can be electrically connected between the first switching circuit 141 and the first feeding point 113, and the other end of the eighth inductor L8 can be grounded.

[0104] It can be understood that the first capacitor C1 and the second capacitor C2 can be but not limited to 1pf (picofarad), the first inductor L1 can be but not limited to 3.0nh (nanohenry), the second inductor L2 can be but not limited to 4.7nh, the third capacitor C3 can be but not limited to 0.5pf, the fourth inductor L4 can be but not limited to 1.0nh, the fifth inductor L5 can be but not limited to 3.9nh, the sixth inductor L6 can be but not limited to 15nh, the seventh inductor L7 can be but not limited to 7.5nh, and the eighth inductor L8 can be but not limited to 13nh.

[0105] It can be understood that the first frequency selection circuit 1421, the second frequency selection circuit 1422, the first tuning branch 1423 and the second tuning branch 1424 can form a first matching circuit 142. That is, the first tuning module 140 may include a first matching circuit 142 and a first switching circuit 141, the first matching circuit 142 can perform impedance matching adjustment on the excitation signal provided by the first feed source 130, and the first switching circuit 141 can adjust the frequency of the wireless signal supported by the first radiator 110 and the second radiator 120. The so-called matching circuit is also called a matching network, and the matching circuit can perform impedance matching adjustment on the excitation signal provided by the feed source. The so-called impedance refers to the obstruction to the excitation current in the circuit, which is called impedance. When the internal resistance of the feed source is equal to the characteristic impedance of the transmission line and the phase is the same, or the characteristic impedance of the transmission line is equal to the connected load impedance and the phase is the same, it is respectively called that the input end or the output end of the transmission line is in an impedance matching state, referred to as impedance matching.

[0106] It should be noted that the first matching circuit 142 , the first switching circuit 141 , and the first tuning module 140 of the embodiment of the present application may also include other circuit structures, and the embodiment of the present application does not limit the specific structures of the above components.

[0107] The band-stop circuit 1821 of the second tuning module 150 may include a fourth capacitor C4, a ninth inductor L9 and a fifth capacitor C5. The fourth capacitor C4 and the ninth inductor L9 may be connected in parallel to form a first whole, one end of the first whole may be electrically connected to the second feed source 170, the other end of the whole may be electrically connected to one end of the fifth capacitor C5, and the other end of the fifth capacitor C5 may be electrically connected to the second radiator 120. The second tuning module 150 also includes a third tuning branch 1822, a fourth tuning branch 1823 and a fifth tuning branch 1824, the third tuning branch 1822 may include a tenth inductor L10, one end of the tenth inductor L10 may be electrically connected between the fifth capacitor C5 and the second radiator 120, and the other end of the tenth inductor L10 is grounded. The fourth tuning branch 1823 may include a sixth capacitor C6 and an eleventh inductor L11, the sixth capacitor C6 and the eleventh inductor L11 may be connected in parallel to form a second whole, one end of the second whole may be electrically connected between the first whole and the second feed source 170, and the other end of the second whole may be grounded. The fifth tuning branch 1824 may include a twelfth inductor L12, the twelfth inductor L12 may be connected in series between one end of the second whole and the second feed source 170. The second switching circuit 181 of the second tuning module 150 may include four second load branches 1811, the second switching circuit 181 may include a seventh capacitor C7, a thirteenth inductor L13, a fourteenth inductor L14 and a fifteenth inductor L15, one end of the seventh capacitor C7, the thirteenth inductor L13, the fourteenth inductor L14 and the fifteenth inductor L15 is grounded, and the other end may be electrically connected between one end of the tenth inductor L10 and one end of the fifth capacitor C5.

[0108] It can be understood that the fourth capacitor C4 can be but not limited to 0.5pf, the ninth inductor L9 can be but not limited to 8.2nh, the fifth capacitor C5 can be but not limited to 1.2pf, the tenth inductor L10 can be but not limited to 62nh, the sixth capacitor C6 can be but not limited to 5.6pf, the eleventh inductor L11 can be but not limited to 8.2nh, the twelfth inductor L12 can be but not limited to 0 ohm inductance, the seventh capacitor C7 can be but not limited to 1.0pf, the thirteenth inductor L13 can be but not limited to 27nh, the fourteenth inductor L14 can be but not limited to 13nh, and the fifteenth inductor L15 can be but not limited to 12nh.

[0109] It can be understood that the third tuning branch 1822, the fourth tuning branch 1823, the fifth tuning branch 1824 and the band-stop circuit 1821 can form a second matching circuit 182. That is, the first tuning module 140 may include a second matching circuit 182 and a second switching circuit 181, the second matching circuit 182 can perform impedance matching adjustment on the excitation signal provided by the second feed source 170, and the second switching circuit 181 can adjust the frequency of the wireless signal supported by the first radiator 110 and the second radiator 120.

[0110] It should be noted that the second matching circuit 182 , the second switching circuit 181 , and the second tuning module 150 of the embodiment of the present application may also include other circuit structures, and the embodiment of the present application does not limit the specific structures of the above components.

[0111] The third tuning module 180 may include a third switching circuit 151, and the third switching circuit 151 may include multiple (two or more) third load branches 1511. One end of each third load branch 1511 may be electrically connected to the electrical connection point 123 of the second radiator 120, and the other end of each third load branch 1511 may be grounded. The third switching circuit 151 switches between multiple third load branches 1511 to adjust the frequency range of the first wireless signal and the second wireless signal supported by the first radiator 110 and the second radiator 120. The third switching circuit 151 may include, but is not limited to, a sixteenth inductor L16, an eighth capacitor C8, a ninth capacitor C9, a seventeenth inductor L17, and a tenth capacitor C10; one end of the sixteenth inductor L16 and the tenth capacitor C10 may be electrically connected to the electrical connection point 123 of the second radiator 120, and the other end may be grounded; one end of the eighth capacitor C8 may be electrically connected to the electrical connection point 123 of the second radiator 120, and the other end may be electrically connected to one end of the ninth capacitor C9, and the other end of the ninth capacitor C9 may be grounded. The third tuning module 180 may also include a sixth tuning branch 152, which may include, but is not limited to, an eighteenth inductor L18, one end of which may be electrically connected between the third switching circuit 151 and the electrical connection point 123, and the other end of the eighteenth inductor L18 may be grounded.

[0112] It can be understood that the sixteenth inductor L16 can be but not limited to zero ohm inductance, the eighth capacitor C8 and the ninth capacitor C9 can be but not limited to 0.5pf, the seventeenth inductor L17 can be but not limited to 2.2nh, the tenth capacitor C10 can be but not limited to 1.2pf, and the eighteenth inductor L18 can be but not limited to 1.8nh.

[0113] It should be noted that the third tuning module 180 and the third switching circuit 151 of the embodiment of the present application may also include other structures, and the embodiment of the present application does not limit the specific structures of the above components.

[0114] Based on the structures of the first tuning module 140, the second tuning module 150 and the third tuning module 180, the working method of the embodiment of the present application is described below by taking the first wireless signal as a 2.4G Wi-Fi signal and the second wireless signal as a 5G full-band signal as an example:

[0115] When the antenna device 100 needs to support 2.4G Wi-Fi signals and the second wireless signal of the first frequency band of the N40 and N41 frequency bands, since the first frequency selection circuit 1421 and the second frequency selection circuit 1422 of the first matching circuit 142 of the first tuning module 140 are connected in series, the first frequency selection circuit 1421 and the second frequency selection circuit 1422 can be bandpass matching circuits. At this time, regardless of whether the first inductive load branch 1411 (RF3 branch) of the first switching circuit 141 is turned on, the high-frequency 2.4G Wi-Fi signal and the second wireless signal in the N40 and N41 frequency bands are constantly equivalent to a series inductor, which is equivalent to directly feeding the first radiator 110; at the same time, under the ground return effect of the second radiator 120, the second tuning module 150 and the load branch corresponding to the third switching circuit 151 of the second tuning module 150 that form a mouth-to-mouth relationship with the first radiator 110, the second radiator 120 can constitute a parasitic branch, which can increase the current path of the 2.4G Wi-Fi signal and the second wireless signal in the N40 and N41 frequency bands, thereby enhancing the radiation efficiency of the 2.4G Wi-Fi signal and the second wireless signal in the N40 and N41 frequency bands. The first feed source 130 can excite the radiation section between the first feeding point 113 and the first end 111 as the main radiation section, and the radiation section between the third end 121 and the electrical connection point 123 as the auxiliary radiation section to jointly support the 2.4G Wi-Fi signal and the second wireless signal of the N40 / N41 frequency band (direct feeding + parasitic mode). Since the N40 frequency band / N41 frequency band is closer to the 2.4G Wi-Fi frequency band, the mode of the N40 frequency band / N41 frequency band is similar to (or the same as) the mode of the 2.4G Wi-Fi frequency band.

[0116] When the antenna device 100 needs to support 2.4G Wi-Fi signals and second wireless signals in the B1 and B3 bands, since the first frequency selection circuit 1421 and the second frequency selection circuit 1422 of the first matching circuit 142 of the first tuning module 140 are bandpass matching circuits connected in series with each other, when the first inductive load branch 1411 (RF3 branch) of the first switching circuit 141 is disconnected, the intermediate frequency B1 and B3 bands are equivalent to series capacitance, which is equivalent to coupling and feeding the first radiator 110, and at the same time ... radiator 110 is formed with the first radiator 110, the first radiator 110 is connected to the first radiator 110. Under the ground return effect of the load branch corresponding to the second radiator 120, the second tuning module 150 and the third switching circuit 151 of the second tuning module 150, the current path of the B1 and B3 frequency bands can be increased, thereby enhancing the radiation efficiency of the intermediate frequency B1 and B3 frequency bands. At the same time, by automatically switching the parallel inductance (RF1 branch, RE2 branch, RF4 branch) of the switch corresponding to the first switching circuit 141, the electrical length of different intermediate frequency bands can be equivalently changed, thereby achieving intermediate frequency switching from 1.7GHz to 2.17GHz. The first feed source 130 can excite the radiation section between the second end 112 and the first end 111 of the first radiator 110 as the main radiation section, and the radiation section between the third end 121 and the electrical connection point 123 of the second radiator 120 as the auxiliary radiation section to jointly support the wireless signal of the B1 / B3 frequency band (coupled feeding + parasitic mode).

[0117] When the antenna device 100 needs to support a 2.4G Wi-Fi signal and a second wireless signal in the N78 frequency band, since the first frequency selection circuit 1421 and the second frequency selection circuit 1422 of the first matching circuit 142 of the first tuning module 140 are bandpass matching circuits connected in series, when the first inductive load branch 1411 (RF3 branch) of the first switching circuit 141 is turned on, the second wireless signal in the high-frequency N78 frequency band is also equivalent to a series inductance (at this time, the 2.4G Wi-Fi signal is also equivalent to a series inductance, which is a constant state), which is equivalent to directly feeding the first radiator 110; at this time, the corresponding load branches (RF1 branch, RE1 branch) of the first switching circuit 141 2 branches, RF4 branches) can be turned on or off according to actual needs to achieve frequency deviation adjustment of N78. At the same time, under the ground return effect of the second radiator 120 that forms a mouth-to-mouth relationship with the first radiator 110, the second tuning module 150 and the load branch corresponding to the third switching circuit 151 of the second tuning module 150, the first feed source 130 can excite the radiation section between the first feeding point 113 and the first end 111 as the main radiation section, and the radiation section between the third end 121 and the fourth end 122 to jointly support the N78 frequency band signal with a three-quarter wavelength mode as an auxiliary radiation section. The second radiator 120 forms a three-quarter wavelength parasitic mode to enhance the radiation efficiency of the N78 frequency band.

[0118] When the antenna device 100 needs to support 2.4G Wi-Fi signals and low-frequency second wireless signals, since the band-stop circuit 1821 of the second tuning module 150 can be connected in series with the fifth capacitor C5 with a capacitance of 1.2pf and (the band-stop formed by the fourth capacitor C4 of 0.5pf and the ninth inductor L9 of 8.2nh in parallel) to form a hybrid circuit, the hybrid circuit can couple and feed the low-frequency signal equivalent to a series of small capacitors (about 1.5-1.8pf), and cooperate with the second switching circuit 181 to parallel large inductors (such as 10nh-100nh) or parallel small capacitors (0.5pf-1pf) for low-frequency switching, so as to achieve 600MHz-1GHz frequency band switching. The second feed source 170 can excite the radiation section between the second feeding point 124 and the fourth end 122 of the second radiator 120 to support the second wireless signal in the low-frequency band in a one-eighth wavelength mode. Among them, since the band stop formed by the fourth capacitor C4 of 0.5pf and the ninth inductor L9 of 8.2nh in parallel can achieve frequency cutoff of 2.4GHz-2.5GHz, the second tuning module 150 including the band stop circuit 1821 can ensure that when the low frequency is switched, the high-order mode corresponding to the low-frequency resonance will not fall within the band of the 2.4G Wi-Fi signal, which can avoid the efficiency pit of the 2.4G Wi-Fi signal, and further ensure that no matter whether the low frequency or the medium and high frequency are switched in the frequency band, the state of the 2.4G Wi-Fi signal is relatively stable and no obvious efficiency pit will be generated.

[0119] Please refer to the following Figures 11 to 16 , Fig.11 for Fig.10 The first antenna parameter curve diagram of the antenna device 100 is shown in FIG. Fig.12 for Fig.10 The second antenna parameter curve diagram of the antenna device 100 is shown in FIG. Fig.13 for Fig.10 The third antenna parameter curve diagram of the antenna device 100 is shown in FIG. Fig.14 for Fig.10 The fourth antenna parameter curve diagram of the antenna device 100 is shown in FIG. Fig.15 for Fig.10 The fifth antenna parameter curve diagram of the antenna device 100 is shown in FIG. Fig.16 for Fig.10 A sixth antenna parameter curve diagram of the antenna device 100 is shown.

[0120] Fig.11 The middle curves S1 to S3 are respectively the antenna S11 parameter curve, the radiation efficiency curve and the system total efficiency curve of the antenna device 100 supporting B3 / N3 / B40 / N40+N41 in the non-standalone networking state (Non-Standalone, referred to as NSA). Fig.12 The middle curves S4 to S6 are respectively the antenna S11 parameter curve, the radiation efficiency curve and the system total efficiency curve when the antenna device 100 supports N78 / B41 / N41. Fig.13 The middle curves S7 to S9 are respectively the antenna S11 parameter curve, the radiation efficiency curve and the system total efficiency curve when the antenna device 100 supports B32 / N75. Fig.14 The middle curves S10 to S12 are respectively the antenna S11 parameter curve, the radiation efficiency curve and the system total efficiency curve when the antenna device 100 supports N79. Fig.15 The middle curves S13 to S15 are respectively the antenna S11 parameter curve, the radiation efficiency curve and the system total efficiency curve when the antenna device 100 supports N71 (616 MHz-689 MHz). Fig.16 The middle curves S16 to S18 are respectively the antenna S11 parameter curve, the radiation efficiency curve and the system total efficiency curve when the antenna device 100 supports N71 (616MHz-689MHz). Figures 11 to 16 It can be seen that when the second wireless signal of the antenna device 100 is switched to the medium and high frequency (B1, B3, B40, B41) bands, the antenna efficiency at each medium and high frequency is relatively good, all of which are -3dB to -4dB (the antenna efficiency of B32 is -4.5dB); when the second wireless signal of the antenna device 100 is switched to the UHB-N78 band, the antenna efficiency is relatively good, which is -4dB to -5dB; when the second wireless signal of the antenna device 100 is switched to the UHB-N79 band, the antenna efficiency is relatively good, which is -4dB to -5dB; The efficiency is better, at about -4dB; when the second wireless signal of the antenna device 100 is switched to the low-frequency -N71 band, the antenna efficiency is better, at about -7dB; and, in each frequency band state, the 2.4G Wi-Fi antenna efficiency of the second wireless signal is stable at about -3.3dB to -4.5dB, realizing the same antenna system, the first radiator 110 and the second radiator 120 simultaneously cover the antenna design of 5G full-band cellular signals plus 2.4G Wi-Fi signals.

[0121] It should be noted that the above is only an exemplary description of the antenna device 100 according to the embodiment of the present application. Without conflict, the solutions of the antenna device 100 according to the embodiment of the present application can be combined arbitrarily.

[0122] For example, the embodiment of the present application further provides an antenna device 100, including a first radiator 110, a first feed source 130, a second radiator 120, a second feed source 170 and a band-stop circuit 1821. The first radiator 110 includes a first end 111 and a second end 112, and a first feeding point 113 disposed between the first end 111 and the second end 112, and the second end 112 is grounded. The first feed source 130 is electrically connected to the first feeding point 113. The second radiator 120 includes a third end 121 and a fourth end 122, and an electrical connection point 123 and a second feeding point 124 disposed between the third end 121 and the fourth end 122, the third end 121 is spaced apart from the first end 111, the fourth end 122 extends in a direction away from the first radiator 110 and is grounded, and the second feeding point 124 is located between the electrical connection point 123 and the fourth end 122. The second feed source 170 is electrically connected to the second feeding point 124. The band-stop circuit 1821 is connected in series between the second feed source 170 and the second feed point 124. The first feed source 130 is used to excite the first radiator 110 and the second radiator 120 to support the first wireless signal, the second feed source 170 is used to excite the second radiator 120 to generate a resonant mode and support a second wireless signal in the fourth frequency band, and the band-stop circuit 1821 is used to cut off a multi-frequency signal corresponding to a multi-frequency resonance mode of the resonant mode, and the frequency band range of the multi-frequency signal at least partially overlaps with the frequency band range of the first wireless signal.

[0123] The antenna device 100 further includes a first tuning module 140 and a second tuning module 150. When the second tuning module 150 is tuned and the first tuning module 140 is in the first state of the first tuning mode, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support at least one of the first wireless signal, the second wireless signal of the first frequency band, and the second wireless signal of the second frequency band. When the second tuning module 150 is tuned and the first tuning module 140 is in the second state of the second tuning mode, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support at least one of the first wireless signal, the second wireless signal of the first frequency band, and the second wireless signal of the third frequency band. The third frequency band is different from the first frequency band, the second frequency band, and the frequency of the first wireless signal.

[0124] It can be understood that the first tuning module 140 includes a first switching circuit 141, and a first frequency selection circuit 1421 and a second frequency selection circuit 1422 which are connected in series between the first feed source 130 and the first feeding point 113. The first switching circuit 141 includes a zero-ohm first inductive load branch 1411, one end of the first inductive load branch 1411 is electrically connected between the first frequency selection circuit 1421 and the second frequency selection circuit 1422, and the other end of the first inductive load branch 1411 can be switchably connected or disconnected between the second frequency selection circuit 1422 and the first feeding point 113, so that the first inductive load branch 1411 can be electrically connected to both ends of the second frequency selection circuit 1422, or the first inductive load branch 1411 can be disconnected from the electrical connection with both ends of the second frequency selection circuit 1422. The first switching circuit 141 can conduct the other end of the first inductive load branch 1411 to be electrically connected between the second frequency selection circuit 1422 and the first feeding point 113, so that the first tuning module 140 is in the first tuning mode. The first switching circuit 141 can also disconnect the electrical connection between the other end of the first inductive load branch 1411 and the second frequency selection circuit 1422 and the first feeding point 113, so that the first tuning module 140 is in the second tuning mode. When the first switching circuit 141 conducts the other end of the first inductive load branch 1411 to be electrically connected between the second frequency selection circuit 1422 and the first feeding point 113 so that the first inductive load branch 1411 is in the first tuning mode electrically connected to both ends of the second frequency selection circuit 1422, and in the first state in which the second tuning module 150 is tuned, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support at least one of the first wireless signal, the second wireless signal in the first frequency band, and the second wireless signal in the second frequency band.

[0125] It should be noted that the above is only an exemplary description of the antenna device 100 according to the embodiment of the present application. The antenna device 100 may also have other structures, and the embodiment of the present application does not limit the specific structure of the antenna device 100.

[0126] Based on the structure of the above electronic device 10, the embodiment of the present application also provides an electronic device 10, which can be a smart phone, a tablet computer, or a gaming device, an augmented reality (AR) device, an automotive device, a data storage device, an audio player, a video player, a laptop, a desktop computing device, etc. Please refer to Fig.17 , Fig.17 This is a schematic diagram of a first structure of an electronic device 10 provided in an embodiment of the present application. The electronic device 10 may include the antenna device 100 of any of the aforementioned embodiments.

[0127] like Fig.17As shown, the electronic device 10 further includes a display screen 200 , a middle frame 300 , a circuit board 400 , a battery 500 and a rear cover 600 .

[0128] The display screen 200 can be mounted on the middle frame 300 and connected to the rear case 600 through the middle frame 300 to form a display surface of the electronic device 10. The display screen 200 can be used to display information such as images and texts. The display screen 200 can be a display device of the type of an organic light-emitting diode (OLED) display device or an organic light-emitting diode (OLED) display.

[0129] The middle frame 300 may include a frame 310 and a middle plate 320, the frame 310 may form an outer frame 310 of the electronic device 10, and the middle plate 320 may provide support for the electronic components or electronic devices in the electronic device 10. The frame 310 and the middle plate 320 may form an accommodation space, and the electronic components and electronic devices in the electronic device 10 may be installed and fixed in the accommodation space.

[0130] The circuit board 400 may be mounted on the middle frame 300. The circuit board 400 may be a mainboard of the electronic device 10. Among them, one, two or more electronic devices such as a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera assembly, a distance sensor, an environmental sensor, a gyroscope, and a processor may be integrated on the circuit board 400. Among them, the display screen 200 may be electrically connected to the circuit board 400 so that the display of the display screen 200 is controlled by the processor on the circuit board 400.

[0131] The battery 500 may be mounted on the middle frame 300. At the same time, the battery 500 is electrically connected to the circuit board 400 so that the battery 500 can power the electronic device 10. A power management circuit may be provided on the circuit board 400. The power management circuit is used to distribute the voltage provided by the battery 500 to various electronic devices in the electronic device 10.

[0132] The rear shell 600 may be connected to the middle frame 300. The rear shell 600 is used to seal the electronic devices and functional components of the electronic device 10 inside the electronic device 10 together with the middle frame 300 and the display screen 200, so as to protect the electronic devices and functional components of the electronic device 10.

[0133] It can be understood that the ground system 160 of the embodiment of the present application can be formed on the rear shell 600, the circuit board 400 or the middle plate 320, and a conductor area with a zero potential can be provided on the rear shell 600, the circuit board 400 or the middle plate 320, and the ground system 160 can be provided on the conductor area. For example, a conductor area with a zero potential can be provided on both the middle plate 320 and the circuit board 400, and the second end 112 of the first radiator 110 and the fourth end 122 of the second radiator 120 can be electrically connected to the middle plate 320 (the conductor area with a zero potential on the middle plate) to achieve grounding of the second end 112 and the fourth end 122; the second tuning module 150 can be electrically connected to the circuit board 400 (the conductor area with a zero potential on the middle plate) to achieve grounding. It should be noted that when the electronic device 10 includes multiple grounded conductor areas, the multiple grounded conductor areas can eventually be electrically connected to form an integrated ground system 160. It should be noted that the second end 112 of the first radiator 110 and the fourth end 122 of the second radiator 120, as well as the second tuning module 150 of the embodiment of the present application can also be electrically connected to the same conductor region with zero potential to achieve grounding. The embodiment of the present application does not limit the specific grounding method of the electronic device 10 and the antenna device 100.

[0134] It can be understood that one or more of the first feed source 130, the second feed source 170, the first tuning module 140, the second tuning module 150, and the third tuning module 180 of the embodiment of the present application can be, but is not limited to, arranged on the circuit board 400; of course, one or more of the above-mentioned components can also be arranged on the small board of the electronic device 10, and the embodiment of the present application does not limit the specific setting positions of the three structures.

[0135] It is understandable that when the frame 310 of the middle frame 300 is a conductor structure, the first radiator 110 and the second radiator 120 can be formed on the frame 310. For example, please refer to Fig.18 , Fig.18 The second structural diagram of the electronic device provided in the embodiment of the present application, a plurality of slits may be provided on the frame 310 to form a first metal branch 311 and a second metal branch 312 on the frame 310, the first radiator 110 may include the first metal branch 311, and the second radiator 120 may include the second metal branch 312. Among them, a non-conductive material similar in color to the rear shell 600 may be filled in the plurality of slits to improve the structural strength of the frame 310.

[0136] It should be noted that the first radiator 110 and the second radiator 120 may also be arranged in other spaces of the electronic device 10, for example but not limited to, three radiators may be formed on the circuit board 400 by printing, spraying, etc. The specific formation method of the three radiators is not limited in the embodiment of the application.

[0137] It should be noted that the antenna solution of the embodiment of the present application is applicable to 5G straight-panel electronic devices 10, curved screen electronic devices 10, and can also be applicable to electronic devices 10 in the form of sliding, rolling, folding, etc. The embodiment of the present application does not limit the specific form of the electronic device 10.

[0138] It should be noted that the above is only an exemplary description of the electronic device 10 in the embodiment of the present application. The electronic device 10 may also include a camera module, an acoustic-to-electric conversion module, etc. The embodiment of the present application does not limit the specific structure of the electronic device 10.

[0139] The antenna device 100 and the electronic device 10 of the embodiment of the present application integrate the 5G mobile cellular full frequency band (600MHz to 5GHz) and the 2.4G Wi-Fi into an antenna system, and perform joint tuning with the support of three tuning modules to ensure that the performance of the 2.4G Wi-Fi signal remains stable and good while switching any cellular frequency band. The performance is moderately maintained between -3.3dB and -4.5dB, and the fluctuation is less than 1.5dB, which greatly improves the daily use quality of the user's cellular signal and Wi-Fi signal. At the same time, since the present application does not split the cellular frequency band signal and the 2.4G Wi-Fi signal into two independent antennas, this greatly saves antenna space, reduces the number of antennas, and also reduces the workload of decoupling and interference of multiple antennas in the later stage. Moreover, the antenna system formed by the first radiator 110 and the second radiator 120 of the present application only needs to open a gap on the frame 310, thereby improving the appearance of the electronic device 10; at the same time, the Wi-Fi antenna is not designed separately using antenna forms such as LDC or FPS, which greatly saves product costs and debugging hours.

[0140] 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.

[0141] 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 radiator, comprising a first end and a second end, and a first feeding point arranged between the first end and the second end, wherein the second end is grounded; a first feed source, electrically connected to the first feed point; A first tuning module, electrically connected between the first feed source and the first feeding point; A second radiator, comprising a third end and a fourth end, and an electrical connection point disposed between the third end and the fourth end, wherein the third end is spaced apart from the first end, and the fourth end extends in a direction away from the first radiator and is grounded; and A second tuning module, one end of which is electrically connected to the electrical connection point and the other end is grounded; wherein, In a first state where the second tuning module is tuning and the first tuning module is in a first tuning mode, the first feed source is used to excite the first radiator and the second radiator to support at least one of a first wireless signal, a second wireless signal in a first frequency band, and a second wireless signal in a second frequency band; In a second state in which the second tuning module is tuning and the first tuning module is in a second tuning mode, the first feed source is used to excite the first radiator and the second radiator to support at least one of the first wireless signal, the second wireless signal in the first frequency band, and the second wireless signal in a third frequency band, and the third frequency band is different from the frequencies of the first frequency band, the second frequency band, and the first wireless signal.

2. The antenna device according to claim 1, characterized in that The first tuning module includes a first switching circuit, and a first frequency selection circuit and a second frequency selection circuit connected in series between the first feed source and the first feed point, the first switching circuit includes a first inductive load branch of zero ohm, and one end of the first inductive load branch is electrically connected between the first frequency selection circuit and the second frequency selection circuit; The first switching circuit is used to conduct the other end of the first inductive load branch to be electrically connected between the second frequency selection circuit and the first feeding point, so that the first tuning module is in the first tuning mode; The first switching circuit is further used to disconnect the electrical connection between the other end of the first inductive load branch and the second frequency selection circuit and the first feeding point, so that the first tuning module is in the second tuning mode.

3. The antenna device according to claim 2, characterized in that In the first state or the second state, the first feed source is used to excite the first radiator and the second radiator to jointly generate a first resonance mode, and the first resonance mode is used to form a first resonance current flowing from the first feeding point to the electrical connection point to support at least one of the first wireless signal and the second wireless signal in the first frequency band.

4. The antenna device according to claim 2, characterized in that: In the first state, the first feed source is used to excite the first radiator and the second radiator to jointly generate a second resonant mode, the second resonant mode forms a current zero point between the electrical connection point and the fourth end, and the second resonant mode is used to form a second resonant current flowing from the first feeding point to the current zero point and from the fourth end to the current zero point to support a second wireless signal in the second frequency band.

5. The antenna device according to claim 2, characterized in that: In the second state, the first feed source is used to excite the first radiator and the second radiator to generate a third resonance mode, and the third resonance mode forms a third resonance current flowing from the second end to the electrical connection point to support a second wireless signal in the third frequency band.

6. The antenna device according to claim 2, characterized in that: The first switching circuit also includes multiple load branches, one end of each of the load branches can switchably connect or disconnect the electrical connection between the second frequency selection circuit and the first feeding point, and the other end of each load branch is grounded; the first switching circuit switches between the multiple load branches to adjust the frequency range of at least one of the second frequency band and the third frequency band.

7. The antenna device according to any one of claims 1 to 6, characterized in that: The second radiator further includes a second feeding point, and the second feeding point is located between the electrical connection point and the fourth end; the antenna device further includes: A second feed source electrically connected to the second feed point; and A third tuning module is electrically connected between the second feed source and the second feed point; wherein, Under the action of the third tuning module, the second feed source is used to excite the second radiator to generate a fourth resonance mode to support a second wireless signal in a fourth frequency band.

8. The antenna device according to claim 7, characterized in that: The fourth resonance mode is used to form a fourth resonance current flowing in a direction from the second feeding point to the fourth end to support a second wireless signal in the fourth frequency band.

9. The antenna device according to claim 7, characterized in that: The third tuning module comprises: A band-stop circuit is connected in series between the second feed source and the second feeding point, and is used to cut off the multi-frequency signal corresponding to the multi-frequency resonance mode of the fourth resonance mode, and the frequency band range of the multi-frequency signal at least partially overlaps with the frequency band range of the first wireless signal.

10. The antenna device according to claim 9, characterized in that: The third tuning module also includes: A second switching circuit, one end of the second switching circuit is electrically connected between the band-stop circuit and the second feeding point, the other end of the second switching circuit is grounded, and the second switching circuit is used to adjust the frequency range of the fourth frequency band.

11. The antenna device according to any one of claims 1 to 6, characterized in that: The first wireless signal includes a 2.4G wireless fidelity signal, a 5G wireless fidelity signal, a Bluetooth signal, a GPS L1 frequency band signal, or a GPS L5 frequency band signal; The second wireless signal includes a 5G full-band signal or a 4G full-band signal.

12. An antenna device, characterized in that: include: A first radiator comprises a first end and a second end, and a first feeding point arranged between the first end and the second end, wherein the second end is grounded; a first feed source, electrically connected to the first feed point; a second radiator, comprising a third end and a fourth end, and an electrical connection point and a second feeding point arranged between the third end and the fourth end, the third end being spaced apart from the first end, the fourth end extending in a direction away from the first radiator and being grounded, and the second feeding point being located between the electrical connection point and the fourth end; a second feed source, electrically connected to the second feed point; and A band-stop circuit, wherein the band-stop circuit is connected in series between the second feed source and the second feeding point; wherein, The first feed source is used to excite the first radiator and the second radiator to support a first wireless signal, the second feed source is used to excite the second radiator to generate a resonant mode and support a second wireless signal in a fourth frequency band, and the band-stop circuit is used to cut off the multi-frequency signal corresponding to the multi-frequency resonance mode of the resonant mode, and the frequency band range of the multi-frequency signal at least partially overlaps with the frequency band range of the first wireless signal.

13. The antenna device according to claim 12, characterized in that: Also includes: A first tuning module, electrically connected between the first feed source and the first feeding point; and A second tuning module, one end of which is electrically connected to the electrical connection point and the other end is grounded; wherein, In a first state where the second tuning module is tuning and the first tuning module is in a first tuning mode, the first feed source is used to excite the first radiator and the second radiator to support at least one of a first wireless signal, a second wireless signal in a first frequency band, and a second wireless signal in a second frequency band; In a second state in which the second tuning module is tuning and the first tuning module is in a second tuning mode, the first feed source is used to excite the first radiator and the second radiator to support at least one of a first wireless signal, a second wireless signal in the first frequency band, and a second wireless signal in a third frequency band, and the third frequency band is different from the frequencies of the first frequency band, the second frequency band, and the first wireless signal.

14. The antenna device according to claim 13, characterized in that: The first tuning module includes a first switching circuit, and a first frequency selection circuit and a second frequency selection circuit connected in series between the first feed source and the first feed point, the first switching circuit includes a first inductive load branch of zero ohm, and one end of the first inductive load branch is electrically connected between the first frequency selection circuit and the second frequency selection circuit; The first switching circuit is used to conduct the other end of the first inductive load branch to be electrically connected between the second frequency selection circuit and the first feeding point, so that the first tuning module is in the first tuning mode; The first switching circuit is further used to disconnect the electrical connection between the other end of the first inductive load branch and the second frequency selection circuit and the first feeding point, so that the first tuning module is in the second tuning mode.

15. An electronic device, characterized in that: Comprising the antenna device according to any one of claims 1 to 14.

16. The electronic device according to claim 15, characterized in that: The electronic device further includes a frame, on which a first metal branch and a second metal branch are formed by slits, the first radiator includes the first metal branch, and the second radiator includes the second metal branch.

17. The electronic device according to claim 15, characterized in that: The electronic device also includes a middle plate and a circuit board; when the electronic device includes the antenna device as described in any one of claims 1 to 11 and 13 to 14, the second end and the fourth end are electrically connected to the middle plate to achieve grounding, and the second tuning module is connected to the circuit board to achieve grounding.

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