Antenna device and electronic device

Abstract

The application discloses an antenna device and an electronic equipment. The first radiator and the second radiator of the antenna device are arranged at intervals. The second tuning module is electrically connected to the second radiator. The first tuning module is electrically connected between the first feed source and the first radiator. In a first state where the second tuning module is tuned and the first tuning module is in 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. In a second state where the second tuning module is tuned and the first tuning module is in a second tuning mode, the first radiator and the second radiator support the first wireless signal, the first frequency band and a second wireless signal of a third frequency band. Based on this, the first wireless signal has stable radiation performance, and the antenna device can be miniaturized.

Description

Technical Field

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

[0002] With the development of communication technology, electronic devices such as smartphones are able to perform more and more functions, the communication modes of electronic devices are becoming more diversified, and the number of antenna radiators installed inside electronic devices is also increasing.

[0003] In related technologies, antenna radiators supporting different wireless signals are often set up separately. This requires electronic devices to have more antenna radiators, which increases the production cost of electronic devices and is not conducive to the miniaturization design of electronic devices. Summary of the Invention

[0004] This application provides an antenna device and an electronic device, the latter of which can be miniaturized.

[0005] In a first aspect, this application provides an antenna device, comprising:

[0006] The first radiator includes a first end and a second end, and a first feed point disposed between the first end and the second end, wherein the second end is grounded;

[0007] The first feed source is electrically connected to the first feed point;

[0008] The first tuning module is electrically connected between the first feed source and the first feed point;

[0009] The second radiator includes a third end and a fourth end, and an electrical connection point disposed between the third end and the fourth end. The third end is spaced apart from the first end, and the fourth end extends away from the first radiator and is grounded.

[0010] The second tuning module has one end electrically connected to the electrical connection point and the other end 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 the second state where the second tuning module is tuning and the first tuning module is in the 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 of the first frequency band, and the second wireless signal of the third frequency band, wherein the third frequency band is different from the frequency of the first frequency band, the second frequency band, and the first wireless signal.

[0013] Secondly, this application also provides an antenna device, comprising:

[0014] The first radiator includes a first end and a second end, and a first feed point disposed between the first end and the second end, wherein the second end is grounded;

[0015] The first feed source is electrically connected to the first feed point;

[0016] The second radiator includes a third end and a fourth end, an electrical connection point and a second feed point disposed between the third end and the fourth end, the third end being spaced apart from the first end, the fourth end extending away from the first radiator and grounded, and the second feed point being located between the electrical connection point and the fourth end.

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

[0018] A resistive circuit is connected in series between the second feed source and the second feed point; wherein...

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

[0020] Thirdly, this application also provides an electronic device including the antenna device described above.

[0021] Regardless of whether the first tuning module is in the first tuning mode, causing the first tuning module and the second tuning module to be in the first state, or the first tuning module is in the second tuning mode, causing the first tuning module and the second tuning module to be 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 in the first frequency band. The first wireless signal and the second wireless signal in the first frequency band can be in a constant state and are basically unaffected by the tuning mode of the first tuning module. The first wireless signal and the second wireless signal in the first frequency band have relatively stable radiation performance. Meanwhile, 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 in 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 in the third frequency band; thus, the antenna device of this embodiment can cover at least three frequency bands of the second wireless signal, and the antenna device of this embodiment can support multiple wireless signals through two radiators, and the radiators are multiplexed, which can realize the miniaturization design of the antenna device; at the same time, the antenna device can ensure that when the second wireless signal switches between different frequency bands, the first wireless signal and the second wireless signal in 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. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a first structure of the antenna device provided in an embodiment of this application.

[0024] Figure 2 for Figure 1 The diagram shows an electrical connection schematic of the antenna device.

[0025] Figure 3 for Figure 1 The diagram shows the first type of current distribution for the antenna device.

[0026] Figure 4 for Figure 1 The diagram shows a second type of current distribution for the antenna device.

[0027] Figure 5 for Figure 1 The diagram shows the third type of current distribution for the antenna device.

[0028] Figure 6 This is a schematic diagram of a second structure of the antenna device provided in an embodiment of this application.

[0029] Figure 7 for Figure 6 The diagram shows a current distribution of the antenna device.

[0030] Figure 8 for Figure 6 The diagram shows an electrical connection schematic of the antenna device.

[0031] Figure 9 This is a schematic diagram of a third structure of the antenna device provided in the embodiments of this application.

[0032] Figure 10 This is a schematic diagram of a fourth structure of the antenna device provided in the embodiments of this application.

[0033] Figure 11 for Figure 10 The diagram shows the first type of antenna parameter curves for the antenna device.

[0034] Figure 12 for Figure 10 The diagram shows a second type of antenna parameter curve for the antenna device.

[0035] Figure 13 for Figure 10 The diagram shows a third type of antenna parameter curve for the antenna device.

[0036] Figure 14 for Figure 10 The diagram shows the fourth type of antenna parameter curves for the antenna device.

[0037] Figure 15 for Figure 10 The diagram shows the fifth type of antenna parameter curves for the antenna device.

[0038] Figure 16 for Figure 10 The diagram shows the sixth type of antenna parameter curves for the antenna device.

[0039] Figure 17 This is a schematic diagram of a first structure of an electronic device provided in an embodiment of this application.

[0040] Figure 18 This is a schematic diagram of a second structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0041] The following will refer to the embodiments of this application. Figures 1 to 18The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] This application provides 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, 3rd Generation (3G), 4th Generation (4G), 5th Generation (5G), Near Field Communication (NFC) signals, Bluetooth (BT) signals, Ultra Wide Band (UWB) signals, etc.

[0043] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a first structure of the antenna device 100 provided in an embodiment of this application. The antenna device 100 includes a first radiator 110, a second radiator 120, a first feed 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 grounding end of the first radiator 110, and the first end 111 can be the free end / terminal end / open circuit end of the first radiator 110. The first radiator 110 also includes a first feed point 113, which can be disposed between the first end 111 and the second end 112. A first feed source 130 can be directly or indirectly electrically connected to the first feed 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 wireless signals. The second radiator 120 can be disposed on the 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 can be spaced apart from the first end 111 to form a coupling gap. The fourth end 122 can extend in a direction away from the first radiator 110. The fourth end 122 can be electrically connected to the ground system 160 to achieve grounding, so that the fourth end 122 is the grounding end of the second radiator 120 and the third end 121 is the free end / terminal / open circuit end of the second radiator 120. The second radiator 120 and the first radiator 110 can form a common aperture antenna.

[0045] It is understood that the ground system 160 can form a common ground for the antenna device 100 or electronic device. The ground system 160 can be a plane or structure with zero potential. The ground system 160 can be formed through conductors, printed circuits, or metal printed layers in the antenna device 100 or electronic device; the ground system 160 can be formed on a circuit board, small board, or other carrier board of the antenna device 100 or electronic device; or, the ground system 160 can also be formed on the frame of the antenna device 100 or electronic device. This application embodiment does not limit the specific location of the ground system 160.

[0046] The first tuning module 140 is electrically connected between the first feed source 130 and the first feed point 113, and can change the electrical length of the first radiator 110. The second tuning module 150 is electrically connected to the second radiator 120. For example, the second radiator 120 is provided with an electrical connection point 123, which can be located 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 this 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] As can be understood, electrical length refers to the length of a radiator when radiating a signal. The electrical length of a radiator can be greater than, less than, or equal to its stub length. The electrical length of a radiator is related to the frequency it supports. When the electrical length of a radiator is longer, it can support lower frequency wireless signals; when the electrical length of a radiator is shorter, it can support higher frequency wireless signals. A radiator can adjust the frequency of the wireless signal it supports by changing its electrical length through electrical connections to circuits with different impedances.

[0048] It is understood that the first tuning module 140 and the second tuning module 150 may 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, causing the first tuning module 140 and the second tuning module 150 to be 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 achieving tuning of the frequency of the wireless signal supported by the first radiator 110 and the second radiator 120.

[0049] For example, 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 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.

[0050] For another example, in the second state where the second tuning module 150 is tuning and 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 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. This 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 understood that the first tuning module 140 can be in a first tuning mode or a second tuning mode by selecting different tuning branches electrically connected between the first feed source 130 and the first feed point 113. Of course, the first tuning module 140 can also control a certain tuning branch to switch between different states to make the first tuning module 140 be in the first tuning mode or the second tuning mode. This application embodiment 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 this application embodiment, regardless of whether the first tuning module 140 is in the first tuning mode causing the first tuning module 140 and the second tuning module 150 to be in the first state, or the first tuning module 140 is in the second tuning mode causing the first tuning module 140 and the second tuning module 150 to be in the second state, the first feed 130 can excite the first radiator 110 and the second radiator 120 to support the first wireless signal and the second wireless signal in the first frequency band. The first wireless signal can be in a constant state and is basically unaffected by the tuning mode of the first tuning module 140. The first wireless signal and the second wireless signal in the first frequency band have relatively stable radiation performance. Meanwhile, when the first tuning module 140 is in the first tuning mode, the first feed 130 can also excite the first radiator 110 and the second radiator 120 to support the second wireless signal in the second frequency band; when the first tuning module 140 is in the second tuning mode, the first feed 130 can excite the first radiator 110 and the second radiator 120 to support the second wireless signal in the third frequency band; thus, the antenna device 100 of this embodiment can cover at least three frequency bands of the second wireless signal, and can basically cover the entire frequency band of the second wireless signal. The antenna device 100 of this embodiment can support multiple wireless signals through two radiators, and the radiators are multiplexed, which can realize the miniaturization design of the antenna device 100; at the same time, the antenna device 100 can ensure that when the second wireless signal switches between different frequency bands, the first wireless signal and the second wireless signal in the first frequency band always maintain stable radiation performance, improving the communication quality when the first wireless signal and the second wireless signal coexist.

[0053] Please refer to the following: Figure 2 , Figure 2 for Figure 1 The diagram shows an electrical connection of the antenna device 100. 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 connected in series between the first feed source 130 and the first feed point 113. The first switching circuit 141 includes at least a zero-ohm first inductive load branch 1411. One end of the first inductive load branch 1411 can be electrically connected between the first frequency selection circuit 1421 and the second frequency selection circuit 1422. The other end of the first inductive load branch 1411 can be switched on or off from the electrical connection between the second frequency selection circuit 1422 and the first feed 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 between the two ends of the second frequency selection circuit 1422.

[0055] Understandably, the first switching circuit 141 can connect the other end of the first inductive load branch 1411 to the second frequency selection circuit 1422 and the first feed point 113, so that the first tuning module 140 is in the first tuning mode. The first switching circuit 141 can also disconnect the other end of the first inductive load branch 1411 from the second frequency selection circuit 1422 and the first feed point 113, so that the first tuning module 140 is in the second tuning mode.

[0056] When the first switching circuit 141 conducts the other end of the first inductive load branch 1411 and is electrically connected between the second frequency selection circuit 1422 and the first feed point 113, the first inductive load branch 1411 is in a first tuning mode electrically connected to both ends of the second frequency selection circuit 1422, and in the first state of the second tuning module 150 being tuned, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support at least one of the following wireless signals: a first wireless signal, a second wireless signal in the first frequency band, and a 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 feed point 113, the first inductive load branch 1411 is in a second tuning mode where it is disconnected from the electrical connection between the two ends of the second frequency selection circuit 1422 and the second tuning module 150 is tuning. In this second state, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support at least one of the following wireless signals: the first wireless signal, the second wireless signal of the first frequency band, and the second wireless signal of the third frequency band.

[0058] It is understandable that the first frequency selection circuit 1421 and the second frequency selection circuit 1422 can be bandpass circuits relative 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 higher frequency wireless signals. When the first inductive load branch 1411 is disconnected from the two 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 lower frequency wireless signals.

[0059] It is understood 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. For example, 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, etc. 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. For example, the first frequency band may be, but is not limited to, the N40 band, the N41 band, the B40 band, or the B41 band; the second frequency band may be, but is not limited to, the N78 band or the N79 band; and the third frequency band may be, but is not limited to, the B1 band, the B3 band, the N1 band, or the N3 band. Of course, the first wireless signal and the second wireless signal may also be other signals, and this application embodiment does not limit them.

[0060] As can be understood, a frequency-selective circuit refers to a circuit structure that operates based on the principles of phase-frequency and phase-amplitude characteristics to enable the output of input signals within a certain frequency range. Frequency-selective circuits are also called filters; they can filter out certain frequency components of the excitation signal or amplify certain frequency components. Common frequency-selective circuits may include capacitors and inductors connected in series. This application does not limit the specific structure of the frequency-selective circuit in its embodiments.

[0061] It is understood that an inductive load branch refers to a circuit or structure that allows current to flow, but the current lags behind the voltage. Inductive load branches primarily use inductive reactance components (such as inductors) as the main load. In AC circuits, when current flows through an inductor, an induced electromotive force is generated within the inductor, leading to the storage and release of energy in the circuit; hence, it is called an inductive load. Typical inductive loads include components such as transformers and inductors. When the inductance of an inductor is zero, this inductor with zero inductance can be considered the zero-ohm first inductive load branch 1411 in this embodiment of the application.

[0062] Specifically, when the first switching circuit 141 conducts and connects the other end of the first inductive load branch 1411 to the second frequency selection circuit 1422 and the first feed 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, the first inductive load branch 1411 of the first switching circuit 141 is always equivalent to a series inductive load for the higher frequency first band, second band, and first wireless signal. Since the first inductive load branch 1411 is zero ohms, 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 act as a parasitic branch of the first radiator 110, and the two can jointly excite the generation of resonant modes and 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.

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

[0064] It is understood that the first feed source 130 can excite the radiation segment between the first feed point 113 and the first end 111 of the first radiator 110 as the main radiation segment, and the radiation segment between the third end 121 and the electrical connection point 123 of the second radiator 120 as the auxiliary radiation segment, together supporting the first wireless signal in the first resonant mode. The first resonant current I1 generated by the excitation of the first resonant mode can flow along the direction from the first feed point 113 to the first end 111, and be electromagnetically coupled to the second radiator 120, and can return to 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 segment between the first feed point 113 and the first end 111 serves as the main radiation segment.

[0065] It is understandable that the first inductive load branch 1411 of the first switching circuit 141 is always 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. This 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 similar to the frequency range of the first wireless signal (the frequency ranges of the two signals at least partially overlap in the spectrum), in the first state, the first feed source 130 can also excite the radiation segment between the first feed 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 in the first frequency band.

[0067] It is understood that the first frequency band may also be different from the frequency of the first wireless signal, for example, the two may be completely separated, or the center frequencies of the two may be different in the spectrum. In this case, the first feed source 130 may also excite and support the second wireless signal of the first frequency band using other resonant modes. The embodiments of this application do not limit this.

[0068] It is 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 in other resonant modes. For example, but not limited to, the entire second radiator 120 can be used as an auxiliary radiating segment and together with the first radiator 110 to support the first wireless signal. The embodiments of this application do not limit the specific resonant modes of the first wireless signal and the second wireless signal in the first frequency band.

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

[0070] It is understood that the first feed source 130 can excite the radiation segment between the first feed point 113 and the first end 111 as the main radiation segment, and the radiation segment between the third end 121 and the fourth end 122 (i.e., the entire second radiator 120) as the auxiliary radiation segment in a three-quarter wavelength mode, together supporting the second wireless signal in the second frequency band in the second resonant mode. The second resonant current I2 generated by the excitation of the second resonant mode can flow along the direction from the first feed point 113 to the first end 111, and be electromagnetically coupled to the second radiator 120 and flow on the second radiator 120. 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 differ 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 always equivalent to a series inductive load for the higher frequency second 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 three-quarter wavelength mode. This parasitic mode can enhance the radiation efficiency of the second wireless signal supported by the first radiator 110 in the second frequency band.

[0072] It is understood that the first feed source 130 can individually excite the first radiator 110 and the second radiator 120 to support the first wireless signal, the second wireless signal of the first frequency band, or the second wireless signal of 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 of the first frequency band, and the second wireless signal of the second frequency band under the action of devices such as combiners and power dividers. This application embodiment does not limit 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 in other resonant modes. The embodiments of this application do not limit the specific resonant mode of the second wireless signal in the second frequency band.

[0074] Specifically, 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 feed point 113, the first inductive load branch 1411 is in a second tuning mode where it is disconnected from the electrical connection at both ends of the second frequency selection circuit 1422, and the second tuning module 150 is tuning. In this second state, the first inductive load branch 1411 is disconnected from the electrical connection at both ends of the second frequency selection circuit 1422. For the low-frequency third band, the first inductive load branch 1411 is always equivalent to a series capacitor load. The second frequency selection circuit 1422 is not short-circuited, and the first feed source 130 is equivalent to coupling power to the first radiator 110. Under the combined action of the second tuning module 150, the second radiator 120 can act as a parasitic branch of the first radiator 110, and the two can jointly excite and generate a resonant mode to support the second wireless signal in the third frequency band.

[0075] For example, please refer to Figure 5 , Figure 5 for Figure 1 The diagram shows a third current distribution of the antenna device 100. 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 feed point 113, causing the first inductive load branch 1411 to be in a second tuning mode where it is disconnected from the electrical connection at both ends of the second frequency selection circuit 1422, and the second tuning module 150 is in a second state of tuning. The first feed source 130 can excite the first radiator 110 and the second radiator 120 to generate a third resonant mode. This third resonant mode can form a third resonant 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 resonant mode can support the second wireless signal in the third frequency band.

[0076] Understandably, the first feed source 130 can excite the radiation segment 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 segment, and the radiation segment between the third end 121 and the electrical connection point 123 of the second radiator 120 as the auxiliary radiation segment, together supporting the second wireless signal in the third frequency band in the third resonant mode. The third resonant current I3 generated by the third resonant mode excitation can flow along the direction from the second end 112 to the first end 111, and be electromagnetically coupled to the second radiator 120 and return to 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 is understandable that the third frequency band may differ from both the first and second frequency bands; for example, the third frequency band may be lower than the first and second frequency bands. The first inductive load branch 1411 of the first switching circuit 141 is always equivalent to a series capacitive load for the lower frequency third frequency band. The first switching circuit 141 can be equivalent to an open circuit, and the first feed source 130 is equivalent to coupling power to 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. This parasitic mode can enhance the radiation efficiency of the first radiator 110 supporting the second wireless signal in 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 resonant modes. This application embodiment does not limit this.

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

[0080] In the antenna device 100 of this application embodiment, regardless of whether the first inductive load branch 1411 is electrically connected to both ends of the second frequency selection circuit 1422, causing the first tuning module 140 to be in the first tuning mode, or whether the first inductive load branch 1411 is disconnected from both ends of the second frequency selection circuit 1422, causing the first tuning mode 140 to be in the second tuning mode, the first feed 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 unaffected by the state of the first inductive load branch 1411. The first wireless signal and the second wireless signal of the first frequency band have relatively stable radiation performance. Meanwhile, when the first inductive load branch 1411 is electrically connected to both ends of the second frequency selection circuit 1422, the first feed 130 can also excite the first radiator 110 and the second radiator 120 to support the second wireless signals of the first and second frequency bands; when the first inductive load branch 1411 is disconnected from the electrical connection between the two ends of the second frequency selection circuit 1422, the first feed 130 can excite the first radiator 110 and the second radiator 120 to support the second wireless signals of the third frequency band; thus, the antenna device 100 of this embodiment can cover at least three frequency bands of the second wireless signal, and can basically cover the entire frequency band of the second wireless signal. The antenna device 100 of this embodiment can support multiple wireless signals through two radiators, and the radiators are multiplexed, which can realize the miniaturization design of the antenna device 100; at the same time, the antenna device 100 can ensure 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, improving the communication quality when the first wireless signal and the second wireless signal coexist.

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

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

[0083] It is understood that each first load branch 1412 can be either an inductive load branch or a capacitive load branch, and the first switching circuit 141 can include at least one of the inductive and capacitive load branches. A capacitive load branch refers to a circuit or structure that can prevent current flow, but where the current leads the voltage. A capacitive load branch primarily uses a capacitor as its main load. In an AC circuit, when voltage is applied to a capacitor, the capacitor accumulates charge, forming an electric field, and releases charge when the voltage changes; therefore, it is called a capacitive load. A typical capacitive load includes a capacitor. Considering the low frequency range of the third frequency band, the multiple first load branches 1412 of the first switching circuit 141 in this embodiment can all be inductive load branches to increase the electrical length of the second radiator 120.

[0084] It is understood that the first switching circuit 141 may further include a switching switch. The input terminal of the switching switch may be electrically connected between the second frequency selection circuit 1422 and the first radiator 110. The other end of the switching switch may be electrically connected to the first inductive load branch 1411 and each of the first load branches 1412, respectively, so as to select at least one load branch to operate among the multiple first load branches 1412 and the first inductive load branches 1411. Of course, the first switching circuit 141 may also not include a switching switch. 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 specific structure of the first switching circuit 141 is not limited in the embodiments of this application.

[0085] It is understood that the switching switch, the multiple first load branches 1412, and the first inductive load branch 1411 can be integrated into the same module so that the first switching circuit 141 can be an integrated circuit. Of course, the switching switch, the multiple first load branches 1412, and the first inductive load branch 1411 can also, but are not limited to, be arranged relatively independently on the carrier board. This application does not limit the specific structure of the first switching circuit 141.

[0086] The first switching circuit 141 in this embodiment includes a first inductive load branch 1411 and a plurality of first load branches 1412. The first switching circuit 141 can switch the wireless signal supported by the antenna device 100 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 of different sub-frequency bands, the second wireless signal of the second frequency band of different sub-frequency bands, or the second wireless signal of the third frequency band of different sub-frequency bands, thereby enabling the antenna device 100 to cover more wireless signals.

[0087] Please refer to the following: Figure 6, Figure 6 This is a second structural schematic diagram of the antenna device 100 provided in an embodiment of this application. The antenna device 100 may further include a second feed 170 and a third tuning module 180.

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

[0089] It is understandable that the fourth frequency band may differ from the first, second, and third frequency bands. For example, in terms of the frequency spectrum, the fourth frequency band may be lower than the first, second, and third frequency bands.

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

[0091] Understandably, the second feed 170 can excite the radiation segment of the second radiator 120 between the second feed point 124 and the fourth end 122 to support the second wireless signal of the fourth frequency band in the fourth resonant mode of the eighth wavelength mode. The fourth resonant current I4 generated by the excitation of the fourth resonant mode can flow along the second feed point 124 to the fourth end 122 and return to 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 branch of the second radiator 120 supporting the fourth frequency band shorter, which can further realize the miniaturization design of the antenna device 100. It should be noted that the second feed 170 can also excite the second radiator 120 to support the second wireless signal of the fourth frequency band in other radiation modes, and this application embodiment does not limit this.

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

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

[0095] It is understood that the band-stop circuit 1821 is a circuit structure that can pass most frequency components but attenuates certain frequency components to extremely low levels. For example, but not limited to, the band-stop circuit 1821 may include inductive and capacitive load elements connected in parallel, or the resistive circuit may include a hybrid circuit formed by a combination of inductive and capacitive load elements connected in parallel and then connected in series with a capacitor element. The embodiments of this application do not limit the specific structure of the band-stop circuit 1821.

[0096] In the antenna device 100 of this application embodiment, when the radiating segment between the second feed point 124 and the fourth end 122 of the second radiator 120 supports the second wireless signal of the fourth frequency band in an eighth-wavelength mode, the resonant mode is the fundamental mode. This resonant mode can also generate multiple harmonic resonant modes. If the multiple harmonic signal corresponding to the multiple harmonic resonant mode at least partially overlaps with the first wireless signal, the multiple harmonic signal will interfere with the first wireless signal. The band-stop circuit 1821 of this application embodiment can cut off the multiple harmonic signal. When the second radiator 120 supports the second wireless signal of the fourth frequency band, the higher-order modes generated by the resonant mode of the fourth frequency band will not fall within the band of the first wireless signal, thus avoiding an efficiency dip in the first wireless signal. Therefore, when the second radiator 120 supports the fourth frequency band, the first wireless signal can also have relatively stable radiation performance without significant efficiency dips.

[0097] Please refer to this again. Figure 8 The third tuning module 180 may also include a second switching circuit 181.

[0098] One end of the second switching circuit 181 is directly or indirectly connected between the resistive circuit 1821 and the second feed 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 is 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, one end of which can be switched on or off to connect to the region 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-frequency 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 embodiments of this application do not limit it.

[0100] It is understood that the plurality of second load branches 1811 of the second switching circuit 181 may include, but are not limited to, at least one of inductive load branches and capacitive load branches; 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 embodiments of this application do not limit the specific structure of the second switching circuit 181.

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

[0102] Based on the structure of the antenna device 100 described above, this application embodiment also provides a specific structure for the first tuning module 140, the second tuning module 150, and the third tuning module 180. Please refer to... Figure 9 and Figure 10 , Figure 9 This is a schematic diagram of a third structure of the antenna device 100 provided in an embodiment of this 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 feed point 113. The first tuning module 140 may also include a first tuning branch 1423, which may 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 zero-ohm fourth inductor L4. 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. The other end of the fourth inductor L4 can be electrically connected between the second frequency selection circuit 1422 and the first feed 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 feed point 113 through the first switching circuit 141. The first switching circuit 141 can selectively conduct the two ends of the zero-ohm first inductive load branch 1411 to be electrically connected to the two ends of the second frequency selection circuit 1422, thus connecting them in parallel and short-circuiting the second frequency selection circuit 1422. Alternatively, the first switching circuit 141 can disconnect the electrical connection between the two ends of the zero-ohm first inductive load branch 1411 and the two ends of the second frequency selection circuit 1422. The first switching circuit 141 can also selectively conduct different first load branches 1412 to enable the first radiator 110 and the second radiator 120 to support wireless signals in different frequency bands or sub-bands. The first tuning module 140 may also include a second tuning branch 1424, which may, but is not limited to, include an eighth inductor L8. One end of the eighth inductor L8 can be electrically connected between the first switching circuit 141 and the first feed point 113, and the other end of the eighth inductor L8 can be grounded.

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

[0105] It is 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 the first matching circuit 142. That is, the first tuning module 140 can include the first matching circuit 142 and the first switching circuit 141. The first matching circuit 142 can perform impedance matching adjustment on the excitation signal provided by the first feed 130, and the first switching circuit 141 can adjust the frequency of the wireless signals supported by the first radiator 110 and the second radiator 120. The matching circuit, also called a matching network, can perform impedance matching adjustment on the excitation signal provided by the feed. Impedance refers to the resistance to the excitation current in a circuit. When the internal resistance of the feed is equal in magnitude and phase to the characteristic impedance of the transmission line, or when the characteristic impedance of the transmission line is equal in magnitude and phase to the impedance of the connected load, the input or output end of the transmission line is said to be in an impedance-matched state, or simply impedance matching.

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

[0107] The second tuning module 150's band-stop circuit 1821 may include a fourth capacitor C4, a ninth inductor L9, and a fifth capacitor C5. The fourth capacitor C4 and the ninth inductor L9 can be connected in parallel to form a first integrated circuit. One end of this first integrated circuit can be electrically connected to the second feed source 170, and the other end of this integrated circuit can be electrically connected to one end of the fifth capacitor C5. The other end of the fifth capacitor C5 can 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 can 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 unit. One end of the second unit may be electrically connected between the first unit and the second feed source 170, and the other end of the second unit 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 unit 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 may be 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 is understandable that the fourth capacitor C4 may be, but is not limited to, 0.5pF, the ninth inductor L9 may be, but is not limited to, 8.2nH, the fifth capacitor C5 may be, but is not limited to, 1.2pF, the tenth inductor L10 may be, but is not limited to, 62nH, the sixth capacitor C6 may be, but is not limited to, 5.6pF, the eleventh inductor L11 may be, but is not limited to, 8.2nH, the twelfth inductor L12 may be, but is not limited to, a 0-ohm inductor, the seventh capacitor C7 may be, but is not limited to, 1.0pF, the thirteenth inductor L13 may be, but is not limited to, 27nH, the fourteenth inductor L14 may be, but is not limited to, 13nH, and the fifteenth inductor L15 may be, but is not limited to, 12nH.

[0109] It is 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 the second matching circuit 182. That is, the first tuning module 140 may include the second matching circuit 182 and the second switching circuit 181. The second matching circuit 182 can perform impedance matching adjustment on the excitation signal provided by the second feed 170, and the second switching circuit 181 can adjust the frequency of the wireless signals 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 in this application embodiment may also include other circuit structures, and this application embodiment does not limit the specific structure of the above components.

[0111] The third tuning module 180 may include a third switching circuit 151, which 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, the other end of which 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 which may be grounded.

[0112] It is understandable that the sixteenth inductor L16 may be, but is not limited to, a zero-ohm inductor; the eighth capacitor C8 and the ninth capacitor C9 may be, but are not limited to, 0.5pF; the seventeenth inductor L17 may be, but is not limited to, 2.2nH; the tenth capacitor C10 may be, but is not limited to, 1.2pF; and the eighteenth inductor L18 may be, but is not limited to, 1.8nH.

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

[0114] Based on the structure of the first tuning module 140, the second tuning module 150, and the third tuning module 180 described above, the following describes the operation of the embodiments of this application using the first wireless signal being a 2.4G Wi-Fi signal and the second wireless signal being 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 signals 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 of the N40 and N41 bands are always equivalent to a series inductor, which is equivalent to directly feeding the first radiator 110. At the same time, under the grounding 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, which form a port-to-port connection with the first radiator 110, the second radiator 120 can form a parasitic branch, which can increase the current path of the 2.4G Wi-Fi signal and the second wireless signal of the N40 and N41 bands, thereby enhancing the radiation efficiency of the 2.4G Wi-Fi signal and the second wireless signal of the N40 and N41 bands. The first feed source 130 can excite the radiating segment between the first feed point 113 and the first terminal 111 as the main radiating segment, and the radiating segment between the third terminal 121 and the electrical connection point 123 as the auxiliary radiating segment to jointly support the 2.4G Wi-Fi signal and the second wireless signal (direct feed + parasitic mode) of the N40 / N41 band. Since the N40 / N41 band is close to the 2.4G Wi-Fi band, the mode of the N40 / N41 band is similar to (or the same as) the mode of the 2.4G Wi-Fi 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 series-connected bandpass matching circuits, when the first inductive load branch 1411 (RF3 branch) of the first switching circuit 141 is disconnected, it is equivalent to a series capacitor for the intermediate frequency B1 and B3 bands, which is equivalent to coupling and feeding the first radiator 110. At the same time, it forms a connection with the first radiator 110. Under the grounding 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 inductors (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 changed equivalently, thereby realizing the intermediate frequency switching from 1.7GHz to 2.17GHz. The first feed 130 can excite the radiation segment between the second end 112 and the first end 111 of the first radiator 110 as the main radiation segment and the radiation segment between the third end 121 of the second radiator 120 and the electrical connection point 123 as the auxiliary radiation segment to jointly support the wireless signal of the B1 / B3 frequency bands (coupled feeding + parasitic mode).

[0117] When the antenna device 100 needs to support 2.4G Wi-Fi signals and the second wireless signal in the N78 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 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 branch of the first switching circuit 141 (RF1 branch, RE) The RF4 branch can be turned on or off as needed to adjust the frequency offset of N78. At the same time, under the grounding 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, which form a port-to-port connection with the first radiator 110, the first feed 130 can excite the radiation segment between the first feed point 113 and the first end 111 as the main radiation segment, and the radiation segment between the third end 121 and the fourth end 122 as the auxiliary radiation segment in three-quarter wavelength mode to jointly support the N78 frequency band signal. The second radiator 120 forming a three-quarter wavelength parasitic mode can 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, the band-stop circuit 1821 of the second tuning module 150 can be configured as a hybrid circuit by connecting a fifth capacitor C5 with a capacitance of 1.2pF and (a fourth capacitor C4 with a capacitance of 0.5pF and a ninth inductor L9 with a capacitance of 8.2nh in parallel). This hybrid circuit can effectively couple and feed low-frequency signals using a small series capacitor (around 1.5-1.8pF). Simultaneously, it works with the second switching circuit 181 to perform low-frequency switching using a large inductor in parallel (e.g., 10nh-100nh) or a small capacitor in parallel (0.5pF-1pF), enabling frequency band switching from 600MHz to 1GHz. The second feed source 170 can excite the radiation segment of the second radiator 120 between the second feed point 124 and the fourth terminal 122 to support the low-frequency second wireless signal in an eighth-wavelength mode. Since the band-stop formed by the parallel connection of the 0.5pF fourth capacitor C4 and the 8.2nh ninth inductor L9 can achieve frequency cutoff for 2.4GHz-2.5GHz, the second tuning module 150, including the band-stop circuit 1821, can ensure that the higher-order mode generated by the low-frequency resonance will not fall within the band of the 2.4G Wi-Fi signal when switching low frequencies. This avoids the efficiency dip of the 2.4G Wi-Fi signal, thus ensuring that the state of the 2.4G Wi-Fi signal remains relatively stable and does not produce obvious efficiency dips when switching between low and mid-high frequencies.

[0119] Please refer to the following. Figures 11 to 16 , Figure 11 for Figure 10 The diagram shows a first type of antenna parameter curve for the antenna device 100. Figure 12 for Figure 10 The diagram shows a second type of antenna parameter curve for the antenna device 100. Figure 13 for Figure 10 The diagram shows the third type of antenna parameter curves for the antenna device 100. Figure 14 for Figure 10 The diagram shows the fourth type of antenna parameter curves for the antenna device 100. Figure 15 for Figure 10 The diagram shows the fifth type of antenna parameter curve for the antenna device 100. Figure 16 for Figure 10 The diagram shows the sixth type of antenna parameter curve for the antenna device 100.

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

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

[0122] For example, this application embodiment also provides an antenna device 100, including a first radiator 110, a first feed 130, a second radiator 120, a second feed 170, and a band-stop circuit 1821. The first radiator 110 includes a first end 111 and a second end 112, and a first feed point 113 disposed between the first end 111 and the second end 112, with the second end 112 grounded. The first feed 130 is electrically connected to the first feed 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 feed 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 away from the first radiator 110 and is grounded, and the second feed point 124 is located between the electrical connection point 123 and the fourth end 122. The second feed 170 is electrically connected to the second feed point 124. A 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 the second wireless signal in the fourth frequency band. The band-stop circuit 1821 is used to cut off the multi-harmonic resonant signal corresponding to the multi-harmonic resonant mode of the resonant mode. The frequency range of the multi-harmonic signal at least partially overlaps with the frequency 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 tuning and the first tuning module 140 is in a first state of a first tuning mode, the first feed 130 can excite the first radiator 110 and the second radiator 120 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. When the second tuning module 150 is tuning and the first tuning module 140 is in a second state of a second tuning mode, the first feed 130 can excite the first radiator 110 and the second radiator 120 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 third frequency band. This third frequency band is different from the frequencies of the first frequency band, the second frequency band, and the first wireless signal.

[0124] It is 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 connected in series between the first feed source 130 and the first feed 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. The other end of the first inductive load branch 1411 can be switched on or off between the second frequency selection circuit 1422 and the first feed 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 between the two ends of the second frequency selection circuit 1422. The first switching circuit 141 can connect the other end of the first inductive load branch 1411 to the second frequency selection circuit 1422 and the first feed point 113, so that the first tuning module 140 is in a first tuning mode. The first switching circuit 141 can also disconnect the other end of the first inductive load branch 1411 from the second frequency selection circuit 1422 and the first feed point 113, so that the first tuning module 140 is in a second tuning mode. When the first switching circuit 141 connects the other end of the first inductive load branch 1411 to the second frequency selection circuit 1422 and the first feed point 113, placing the first inductive load branch 1411 in the first tuning mode electrically connected to both ends of the second frequency selection circuit 1422, and the second tuning module 150 is in a first state of tuning, the first feed source 130 can excite the first radiator 110 and the second radiator 120 to support at least one of the following wireless signals: a first wireless signal, a second wireless signal in a first frequency band, and a second wireless signal in a second frequency band.

[0125] It should be noted that the above is only an exemplary description of the antenna device 100 in the embodiments of this application. The antenna device 100 may also have other structures. The embodiments of this application do not limit the specific structure of the antenna device 100.

[0126] Based on the structure of the electronic device 10 described above, this application embodiment also provides an electronic device 10. The electronic device 10 can be a smartphone, tablet computer, or other device, or it can be a gaming device, augmented reality (AR) device, automotive device, data storage device, audio playback device, video playback device, laptop computer, desktop computing device, etc. Please refer to... Figure 17 , Figure 17 This is a schematic diagram of a first structure of an electronic device 10 provided in an embodiment of this application. The electronic device 10 may include the antenna device 100 of any of the foregoing embodiments.

[0127] like Figure 17As shown, the electronic device 10 also includes a display screen 200, a mid-frame 300, a circuit board 400, a battery 500, and a back cover 600.

[0128] The display screen 200 can be mounted on the mid-frame 300 and connected to the rear housing 600 via the mid-frame 300 to form the display surface of the electronic device 10. The display screen 200 can be used to display images, text, and other information. The display screen 200 can be a display device of the type such as an Organic Light-Emitting Diode (OLED) display or an Organic Light-Emitting Diode (OLED) monitor.

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

[0130] The circuit board 400 can be mounted on the mid-frame 300. The circuit board 400 can be the motherboard of the electronic device 10. The circuit board 400 can integrate one, two, or more electronic devices such as a microphone, speaker, receiver, headphone jack, universal serial bus interface (USB interface), camera assembly, proximity sensor, environmental sensor, gyroscope, and processor. The display screen 200 can be electrically connected to the circuit board 400 to control its display via the processor on the circuit board 400.

[0131] Battery 500 can be mounted on mid-frame 300. Simultaneously, battery 500 is electrically connected to circuit board 400 to power electronic device 10. Power management circuitry can be installed on circuit board 400. This power management circuitry distributes the voltage provided by battery 500 to the various electronic components within electronic device 10.

[0132] The rear cover 600 can be connected to the middle frame 300. The rear cover 600, together with the middle frame 300 and the display screen 200, seals the electronic devices and functional components of the electronic device 10 inside the electronic device 10 to protect the electronic devices and functional components of the electronic device 10.

[0133] It is understood that the ground system 160 in this embodiment can be formed on the rear shell 600, circuit board 400, or middle board 320. A conductor region with zero potential can be provided on the rear shell 600, circuit board 400, or middle board 320, and the ground system 160 can be provided on this conductor region. For example, both the middle board 320 and the circuit board 400 can have conductor regions with zero potential. 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 board 320 (the conductor region with zero potential) to ground 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 region with zero potential) to ground. It should be noted that when the electronic device 10 includes multiple grounded conductor regions, these multiple grounded conductor regions can ultimately be electrically connected to form a unified 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 in this application embodiment, can also be electrically connected to the same conductor region with zero potential to achieve grounding. This application embodiment does not limit the specific grounding method of the electronic device 10 and the antenna device 100.

[0134] It is 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 in this application embodiment may be, but are not limited to, disposed on the circuit board 400; of course, one or more of the above components may also be disposed on the small board of the electronic device 10. This application embodiment does not limit the specific placement of the three structures.

[0135] It is understandable that when the frame 310 of the middle frame 300 is a conductive structure, the first radiator 110 and the second radiator 120 can be formed on the frame 310. For example, please refer to... Figure 18 , Figure 18 This is a second structural schematic diagram of the electronic device provided in an embodiment of this application. Multiple gaps can be formed on the frame 310 to create first metal branches 311 and second metal branches 312. The first radiator 110 may include the first metal branch 311, and the second radiator 120 may include the second metal branch 312. The gaps can be filled with a non-conductive material similar in color to the back cover 600 to improve the structural strength of the frame 310.

[0136] It should be noted that the first radiator 110 and the second radiator 120 can also be disposed in other spaces of the electronic device 10, such as, but not limited to, on the circuit board 400, and the three radiators can be formed by printing, spraying, or other means. The embodiments of this application do not limit the specific formation method of the three radiators.

[0137] It should be noted that the antenna scheme of this application embodiment is applicable to 5G candybar electronic devices 10, curved screen electronic devices 10, and also to electronic devices 10 with sliding, folding, or other forms. This application embodiment 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 embodiments of this application. The electronic device 10 may also include a camera module, a sound-to-electric conversion module, etc. The embodiments of this application do not limit the specific structure of the electronic device 10.

[0139] The antenna device 100 and electronic device 10 of this application integrate the full-band 5G mobile cellular signal (600MHz to 5GHz) and 2.4G Wi-Fi into a single antenna system. With the support of three tuning modules, joint tuning ensures that while switching between any cellular bands, the performance of the 2.4G Wi-Fi signal remains moderately stable, maintained between -3.3dB and -4.5dB, with fluctuations less than 1.5dB. This significantly improves the daily usage quality of both cellular and Wi-Fi signals. Furthermore, since this application does not separate the cellular band signal and the 2.4G Wi-Fi signal into two independent antennas, it greatly saves antenna space, reduces the number of antennas, and minimizes the workload associated with subsequent decoupling and interference control of multiple antennas. Moreover, the antenna system formed by the first radiator 110 and the second radiator 120 of this application only requires a gap to be opened on the frame 310, which improves the appearance of the electronic device 10; at the same time, the Wi-Fi antenna does not adopt LDC or FPS antenna forms for separate design, which greatly saves product cost and debugging time.

[0140] In the description of this application, it should be understood that terms such as “first” and “second” are used only to distinguish similar objects and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0141] The antenna device and electronic device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application, and the descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An antenna device, characterized by The antenna comprises: 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, the second end being grounded; a first feed source electrically connected to the first feeding 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 arranged between the third end and the fourth end, the third end being arranged apart from the first end, and the fourth end extending towards a direction away from the first radiator and being grounded; and a second tuning module, one end of the second tuning module being electrically connected to the electrical connection point, and the other end being grounded; wherein in a first state of the first tuning module being in a first tuning mode and the second tuning module being tuned, the first feed source is configured to excite the first radiator and the second radiator to support a first wireless signal, a second wireless signal of a first frequency band, and a second wireless signal of a second frequency band; in a second state of the first tuning module being in a second tuning mode and the second tuning module being tuned, the first feed source is configured to excite the first radiator and the second radiator to support the first wireless signal, the second wireless signal of the first frequency band, and a second wireless signal of a third frequency band, the third frequency band being different from the first frequency band, the second frequency band, and a frequency of the first wireless signal; wherein the first tuning module comprises 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 feeding point, the first switching circuit comprises a first inductive load branch with zero ohm, one end of the first inductive load branch being electrically connected between the first frequency selection circuit and the second frequency selection circuit; wherein the first switching circuit is configured to turn on 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 configured to turn off 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. In the first state or the second state, the first feed source is configured to excite the first radiator and the second radiator to generate a first resonance mode, the first resonance mode being configured to form a first resonance current flowing from the first feeding point to the electrical connection point, so as to support at least one of the first wireless signal, the second wireless signal of the first frequency band.

2. The antenna device of claim 1, wherein In the first state, the first feed source is configured to excite the first radiator and the second radiator to generate a second resonance mode, the second resonance mode forming a current zero point between the electrical connection point and the fourth end, the second resonance mode being configured to form a second resonance current flowing from the first feeding point to the current zero point and flowing from the fourth end to the current zero point, so as to support the second wireless signal of the second frequency band.

3. The antenna device of claim 1, wherein ​ 4. The antenna device of claim 1, wherein In the second state, the first feed source is configured to excite the first radiator and the second radiator to generate a third resonant mode, the third resonant mode forming a third resonant current flowing from the second end to the electrical connection point in a direction to support a second wireless signal of a third frequency band.

5. The antenna device of claim 1, wherein, The first switching circuit further comprises a plurality of load branches, one end of each of the load branches being switchably connected or disconnected with the second frequency selection circuit and the first feeding point, and the other end of each of the load branches being grounded; the first switching circuit is configured to switch among the load branches to adjust a frequency range of at least one of the second frequency band and the third frequency band.

6. The antenna device according to any one of claims 1 to 5, characterized in that The second radiator further comprises a second feeding point between the electrical connection point and the fourth end; the antenna device further comprises: a second feed source electrically connected to the second feeding point; and a third tuning module electrically connected between the second feed source and the second feeding point; wherein under the action of the third tuning module, the second feed source is configured to excite the second radiator to generate a fourth resonant mode to support a second wireless signal of a fourth frequency band.

7. The antenna device of claim 6, wherein, The fourth resonant mode is configured to form a fourth resonant current flowing from the second feeding point to the fourth end in a direction to support the second wireless signal of the fourth frequency band.

8. The antenna device of claim 6, wherein, The third tuning module comprises: a band elimination circuit connected in series between the second feed source and the second feeding point, the band elimination circuit being configured to cut off a multiple frequency signal corresponding to a multiple frequency resonant mode of the fourth resonant mode, the multiple frequency signal having a frequency range at least partially overlapping a frequency range of the first wireless signal.

9. The antenna device of claim 8, wherein, The third tuning module further comprises: a second switching circuit, one end of the second switching circuit being electrically connected between the band elimination circuit and the second feeding point, and the other end of the second switching circuit being grounded, the second switching circuit being configured to adjust a frequency range of the fourth frequency band.

10. The antenna device according to any one of claims 1 to 5, characterized in that The first wireless signal comprises 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 comprises a 5G full frequency band signal or a 4G full frequency band signal.

11. An electronic device, comprising: An electronic device comprising the antenna device of any one of claims 1 to 10.

12. The electronic device of claim 11, wherein, The electronic device further comprises a bezel, the first metal stub and the second metal stub being formed on the bezel by slitting, the first radiator comprising the first metal stub, and the second radiator comprising the second metal stub.

13. The electronic device of claim 11, wherein, The electronic device further comprises a middle plate and a circuit board; 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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