Antenna devices and electronic equipment

Abstract

This application provides an antenna device and an electronic device. The antenna device includes a first radiator, a feed source, a second radiator, a first switch, and a second switch. The feed source feeds an excitation signal to the first radiator through a feed point to excite the first radiator to support a first resonant frequency band. The second radiator is electromagnetically coupled to the first radiator through a gap. A first matching module is electrically connected to the second radiator. The first switch is electrically connected to the first radiator and the first matching module. The second switch is connected to the first matching module and ground. When the first switch is closed and the second switch is open, the first radiator, the first matching module, and the second radiator are electrically connected to increase the radiation length of the first radiator. When the first switch is open and the second switch is closed, the second radiator is grounded through the second switch, so that the excitation signal excites the second radiator to support a second resonant frequency band. Thus, the communication performance of the antenna is improved by adjusting the first or second radiator.

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] Electronic devices such as smartphones contain antennas to enable wireless communication. Examples include 4G antennas, 5G antennas, and WiFi antennas. Antennas are key and indispensable electronic components for enabling communication in electronic devices, and the use of multiple antennas is a growing trend to ensure reliable communication. Maintaining uninterrupted communication in various communication environments makes improving antenna performance extremely important. Summary of the Invention

[0003] This application provides an antenna device and an electronic device that can improve the communication performance of the antenna device.

[0004] This application provides an antenna device, including:

[0005] The first radiator includes the feed point;

[0006] A feed source, which is electrically connected to the feed point, is used to feed an excitation signal to the first radiator through the feed point to excite the first radiator to support the first resonant frequency band.

[0007] A second radiator has a gap between it and the first radiator, and the second radiator is electromagnetically coupled to the first radiator through the gap.

[0008] The first matching module is electrically connected to the second radiator;

[0009] A first switch, one end of which is electrically connected to the first radiator, and the other end of which is electrically connected to the first matching module; and

[0010] The second switch has one end electrically connected to the first matching module and the other end grounded.

[0011] When the first switch is closed and the second switch is open, the first radiator, the first matching module and the second radiator are electrically connected to increase the radiation length of the first radiator.

[0012] When the first switch is open and the second switch is closed, the second radiator is grounded through the second switch, so that the excitation signal excites the second radiator to support the second resonant frequency band.

[0013] This application also provides an electronic device, including:

[0014] case;

[0015] An antenna device is disposed in the housing, and the antenna device is an antenna device according to any embodiment of this application.

[0016] The antenna device of this application embodiment can increase the radiation length of the first radiator to improve the radiation efficiency of the antenna device by switching the open and closed states of the first switch and the second switch, or change the equivalent electrical length of the second radiator to adjust the resonant frequency band of the second radiator, so that the second radiator can form rich CA or ENDC states with the first radiator, which can better cover various frequency bands to improve the communication bandwidth covered by the antenna device, thereby improving the communication performance of the antenna device. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the first structure of the antenna device according to an embodiment of this application.

[0019] Figure 2 This is a schematic diagram illustrating the radiation efficiency of the antenna device according to an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of a second structure of the antenna device according to an embodiment of this application.

[0021] Figure 4 This is another schematic diagram of the radiation efficiency of the antenna device according to an embodiment of this application.

[0022] Figure 5 This is a schematic diagram of a third structure of the antenna device according to an embodiment of this application.

[0023] Figure 6 This is a schematic diagram of a fourth structure of the antenna device according to an embodiment of this application.

[0024] Figure 7 This is a fifth structural schematic diagram of the antenna device according to an embodiment of this application.

[0025] Figure 8 This is a schematic diagram of the sixth structure of the antenna device according to an embodiment of this application.

[0026] Figure 9 This is a schematic diagram of the internal circuit structure of the antenna switch according to an embodiment of this application.

[0027] Figure 10This is a seventh structural schematic diagram of the antenna device according to an embodiment of this application.

[0028] Figure 11 This is an eighth structural schematic diagram of the antenna device according to an embodiment of this application.

[0029] Figure 12 This is a ninth structural schematic diagram of the antenna device according to an embodiment of this application.

[0030] Figure 13 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only 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.

[0032] This application provides an antenna device 100, which can be applied to electronic devices. These electronic devices may include, for example, smartphones, tablets, gaming devices, AR (Augmented Reality) devices, laptops, desktop computing devices, and other devices with wireless communication capabilities.

[0033] Please see Figure 1 The antenna device 100 provided in this application embodiment includes a first radiator 10, a feed source 20, a second radiator 30, a first matching module 40, a first switch 51, and a second switch 52. The first radiator 10 includes a feed point 11. The feed source 20 is electrically connected to the feed point 11, and the feed source 20 is used to feed an excitation signal to the first radiator 10 through the feed point 11 to excite the first radiator 10 to support a first resonant frequency band. The second radiator 30 has a gap 10a between it and the first radiator 10, and the second radiator 30 is electromagnetically coupled to the first radiator 10 through the gap 10a.

[0034] The first matching module 40 is electrically connected to the second radiator 30. One end of the first switch 51 is electrically connected to the first radiator 10, and the other end of the first switch 51 is electrically connected to the first matching module 40. One end of the second switch 52 is electrically connected to the first matching module 40, and the other end of the second switch 52 is grounded.

[0035] When the first switch 51 is closed and the second switch 52 is open, the first radiator 10, the first matching module 40 and the second radiator 30 are electrically connected to increase the radiation length of the first radiator 10.

[0036] When the first switch 51 is open and the second switch 52 is closed, the second radiator 30 is grounded through the second switch 52 so that the excitation signal excites the second radiator 30 to support the second resonant frequency band.

[0037] Thus, in this embodiment of the application, the antenna device 100 can increase the radiation length of the first radiator 10 to improve the radiation efficiency of the antenna device 100 by switching the open and closed states of the first switch 51 and the second switch 52, or change the equivalent electrical length of the second radiator 30 to adjust the resonant frequency band of the second radiator 30, so that the second radiator 30 can form rich CA or ENDC states with the first radiator 10, which can better cover various frequency bands to improve the communication bandwidth covered by the antenna device 100, thereby improving the communication performance of the antenna device.

[0038] The second radiator 30 is electromagnetically coupled to the first radiator 10 through the gap 10a. The first radiator 10 can be understood as the main radiator, and the second radiator 30 can be understood as the parasitic radiator.

[0039] Specifically, the first radiator 10 can be an antenna radiator in the form of FPC (Flexible Printed Circuit), LDS (Laser Direct Structure), PDS (Printing Direct Structure), etc., or an antenna radiator in the form of MDA (In-Mold Design), or an antenna radiator formed by the conductor structure of electronic equipment, metal traces on a circuit board, etc. The shape and size of the first radiator 10 can be set according to actual needs. For example, in a practical application example, the first radiator 10 can be L-shaped.

[0040] Similarly, the second radiator 30 can also be an antenna radiator in the form of FPC, LDS, PDS, MDA, etc., or it can be an antenna radiator formed by the conductor structure of electronic equipment, metal traces on a circuit board, etc.

[0041] In one embodiment, the type of the first radiator 10 is the same as the type of the second radiator 30; in other embodiments, the type of the first radiator 10 may be different from the type of the second radiator 30, and this is not limited.

[0042] The feed source 20 can be mounted on the circuit board of the electronic device, such as the motherboard or a separate circuit board. The feed source 20 provides a first excitation signal. In practical applications, the excitation signal can be a 4G (4th Generation Mobile Communication Technology) excitation signal, a 5G (5th Generation Mobile Communication Technology) excitation signal, or a WiFi (Wireless-Fidelity) excitation signal. The feed point 11 is used to feed in the excitation signal to excite the first radiator 10 and the second radiator 30 to radiate wireless signals to the outside, thereby realizing wireless communication functionality.

[0043] Among them, the switching switch can be a switch with single-pole single-throw function formed by electronic components such as transistors and switching tubes.

[0044] An excitation signal is fed into the feed point 11, exciting the first radiator 10 and the second radiator 30 to resonate and radiate wireless signals to the outside to achieve wireless communication. For example, the first radiator 10 and the second radiator 30 can radiate WiFi signals in the 2.4GHz band, or WiFi 5G signals in the 5.5GHz band, etc., without limitation.

[0045] When the first switch 51 and the second switch 52 are open, the feed source 20 feeds an excitation signal to the first radiator 10 through the feed point 11 to excite the first radiator 10 to support the first resonant frequency band. Under the coupling effect, the excitation signal excites the second radiator 30 to support the fourth resonant frequency band. At this time, the first radiator 10 and the second radiator 30 form a CA (Carrier Aggregation) or ENDC (EUTRA-NR Dual Connection) combination state of the first resonant frequency band and the fourth resonant frequency band.

[0046] The first matching module 40 can be an impedance circuit, specifically one or more impedance elements such as capacitors, inductors, or resistors. The specific configuration can be set according to actual needs and is not limited here.

[0047] In one embodiment, the first matching module 40 is an inductor. When the second switch 52 is closed and the first switch 51 is open, the second radiator 30 is grounded through the second switch 52. The inductance of the first matching module 40 shortens the equivalent electrical length of the second radiator 30, increasing its operating frequency. This means the excitation signal excites the second radiator 30 to support the second resonant frequency band. At this time, the average frequency of the second resonant frequency band is greater than the average frequency of the fourth resonant frequency band. The first radiator 10 and the second radiator 30 form a CA or ENDC combination state of the first and second resonant frequency bands.

[0048] In another embodiment, the first matching module 40 is a capacitor. When the second switch 52 is closed and the first switch 51 is open, the second radiator 30 is grounded through the second switch 52. The capacitor of the first matching module 40 increases the equivalent electrical length of the second radiator 30, thus lowering the operating frequency. In other words, the excitation signal excites the second radiator 30 to support the second resonant frequency band. At this time, the average frequency of the second resonant frequency band is less than the average frequency of the fourth resonant frequency band. The first radiator 10 and the second radiator 30 form a CA or ENDC combination state of the first and second resonant frequency bands.

[0049] In other embodiments, the first matching module 40 may further include at least two of the following impedance elements: capacitor, inductor, or resistor. When the second switch 52 is closed and the first switch 51 is open, the second radiator 30 is grounded through the second switch 52. The equivalent electrical length of the second radiator 30 is adjusted by the first matching module 40 so that the excitation signal excites the second radiator 30 to support a resonant frequency band different from the second resonant frequency band. The first matching module 40 can be configured according to actual needs and is not limited here.

[0050] When the first switch 51 is closed and the second switch 52 is open, the first radiator 10, the first matching module 40, and the second radiator 30 are electrically connected. That is, the first radiator 10 is connected to the second radiator 30 through the first switch 51 and the first matching module 40, thereby increasing the radiation length of the first radiator 10 and improving the radiation performance of the antenna device 100. For details, please refer to [link to relevant documentation]. Figure 2 , Figure 2 This is a schematic diagram of the radiation efficiency of the antenna device 100 according to an embodiment of this application. Figure 2In the diagram, curve S1 represents the theoretical radiation efficiency of the signal radiated by antenna device 100 when the first switch 51 is closed and the second switch 52 is open; curve S2 represents the theoretical radiation efficiency of the signal radiated by antenna device 100 when the first switch 51 and the second switch 52 are open; curve S3 represents the total radiation efficiency of the signal radiated by antenna device 100 when the first switch 51 is closed and the second switch 52 is open; and curve S4 represents the theoretical radiation efficiency of the signal radiated by antenna device 100 when the first switch 51 and the second switch 52 are open.

[0051] Depend on Figure 2 It can be seen that when the first switch 51 is closed and the second switch 52 is open, the first radiator 10, the first matching module 40 and the second radiator 30 are electrically connected to increase the radiation length of the first radiator 10, thereby improving the radiation efficiency of the antenna device 100 by about 1.5dB.

[0052] Please see Figure 3 In some embodiments, the antenna device 100 includes a second matching module 60, a third switch 53, and a fourth switch 54.

[0053] The second matching module 60 is electrically connected to the second radiator 30. One end of the third switch 53 is electrically connected to the first radiator 10, and the other end is electrically connected to the second matching module 60. One end of the fourth switch 54 is electrically connected to the second matching module 60, and the other end is grounded.

[0054] When the third switch 53 is closed and the fourth switch 54 is open, the first radiator 10, the second matching module 60, and the second radiator 30 are electrically connected to increase the radiation length of the first radiator 10.

[0055] When the third switch 53 is open and the fourth switch 54 is closed, the second radiator 30 is grounded through the fourth switch 54 so that the excitation signal excites the second radiator 30 to support the third resonant frequency band.

[0056] Thus, by switching the open and closed states of the third switch 53 and the fourth switch 54, the radiation length of the first radiator 10 can be increased to improve the radiation efficiency of the antenna device 100, or the equivalent electrical length of the second radiator 30 can be changed to adjust the resonant frequency band of the second radiator 30, so that the second radiator 30 can form rich CA or ENDC states with the first radiator 10, which can better cover various frequency bands to improve the communication bandwidth covered by the antenna device 100, thereby improving the communication performance of the antenna device.

[0057] When the first switch 51, the second switch 52, the third switch 53 and the fourth switch 54 are all open, the feed source 20 feeds an excitation signal to the first radiator 10 through the feed point 11 to excite the first radiator 10 to support the first resonant frequency band. Under the coupling effect, the excitation signal excites the second radiator 30 to support the fourth resonant frequency band.

[0058] The second matching module 60 can be an impedance circuit, specifically one or more impedance elements such as capacitors, inductors, or resistors. The specific configuration can be set according to actual needs and is not limited here.

[0059] In one embodiment, the second matching module 60 is an inductor. When the fourth switch 54 is closed and the first switch 51, the second switch 52, and the third switch 53 are all open, the second radiator 30 is grounded through the fourth switch 54. The inductance of the second matching module 60 shortens the equivalent electrical length of the second radiator 30, increasing its operating frequency. This means the excitation signal excites the second radiator 30 to support the third resonant frequency band. At this time, the average frequency of the third resonant frequency band is greater than the average frequency of the fourth resonant frequency band.

[0060] In another embodiment, the second matching module 60 is a capacitor. When the fourth switch 54 is closed and the first switch 51, the second switch 52, and the third switch 53 are all open, the second radiator 30 is grounded through the fourth switch 54. The capacitor of the second matching module 60 increases the equivalent electrical length of the second radiator 30, thereby reducing its operating frequency. In other words, the excitation signal excites the second radiator 30 to support the third resonant frequency band. At this time, the average frequency of the third resonant frequency band is less than the average frequency of the fourth resonant frequency band.

[0061] In other embodiments, the second matching module 60 may further include at least two of the following impedance elements: capacitor, inductor, or resistor. When the fourth switch 54 is closed and the first switch 51, second switch 52, and third switch 53 are all open, the second radiator 30 is grounded through the second switch 52. The second matching module 60 adjusts the equivalent electrical length of the second radiator 30 so that the excitation signal excites the second radiator 30 to support a resonant frequency band different from the third resonant frequency band. The second matching module 60 can be configured according to actual needs and is not limited here.

[0062] When the third switch 53 is closed and the first switch 51, the second switch 52 and the fourth switch 54 are all open, the first radiator 10, the second matching module 60 and the second radiator 30 are electrically connected. That is, the first radiator 10 is electrically connected to the second radiator 30 through the third switch 53 and the second matching module 60, so as to increase the radiation length of the first radiator 10 and thus improve the radiation performance of the antenna device 100.

[0063] When the first switch 51 and the third switch 53 are closed, and the second switch 52 and the fourth switch 54 are open, the first radiator 10, the first matching module 40, the second matching module 60, and the second radiator 30 are electrically connected. That is, the first radiator 10 is electrically connected to the second radiator 30 through the third switch 53, the first matching module 40, and the second matching module 60, thereby increasing the radiation length of the first radiator 10 and improving the radiation performance of the antenna device 100. It should be noted that in this case, the first matching module 40 and the second matching module 60 are either both capacitors or both inductors.

[0064] In some embodiments, the first matching module 40 includes one of a capacitor and an inductor;

[0065] The second matching module 60 includes another of the capacitor and the inductor.

[0066] Thus, when the second switch 52 or the fourth switch 54 is closed and the first switch 51 and the third switch 53 are both open, the equivalent electrical length of the second radiator 30 can be increased or decreased by using different types of first matching modules 40 and second matching modules 60, thereby lowering or raising the operating frequency of the second radiator 30, so that the second radiator 30 and the first radiator 10 can form CA combination states of different frequency bands, thereby realizing multi-band coverage of the antenna device 100.

[0067] When the first switch 51, the second switch 52, the third switch 53, and the fourth switch 54 are all open, the feed source 20 feeds an excitation signal to the first radiator 10 through the feed point 11 to excite the first radiator 10 to support the first resonant frequency band. Under coupling, the excitation signal excites the second radiator 30 to support the fourth resonant frequency band. At this time, the first radiator 10 and the second radiator 30 form a CA or ENDC combination state of the first resonant frequency band and the fourth resonant frequency band.

[0068] In one embodiment, the first matching module 40 includes only capacitors, and the second matching module 60 includes only inductors.

[0069] When the second switch 52 is closed and the first switch 51, the third switch 53, and the fourth switch 54 are all open, the second radiator 30 is grounded through the second switch 52, so that the excitation signal excites the second radiator 30 to support the second resonant frequency band. The average frequency in the second resonant frequency band is lower than the average frequency in the fourth resonant frequency band. Specifically, the equivalent electrical length of the second radiator 30 can be increased by the first matching module 40, i.e., a capacitor, thereby reducing the operating frequency of the second radiator 30. For example, the operating frequency of the second radiator 30 can be switched to the second resonant frequency band, so that the first radiator 10 and the second radiator 30 form a CA or ENDC combination state of the first and second resonant frequency bands.

[0070] When the fourth switch 54 is closed and the first switch 51, the second switch 52, and the third switch 53 are all open, the second radiator 30 is grounded through the fourth switch 54, so that the excitation signal excites the second radiator 30 to support the third resonant frequency band. The average frequency in the third resonant frequency band is greater than the average frequency in the fourth resonant frequency band. Specifically, the equivalent electrical length of the second radiator 30 can be reduced by the second matching module 60, i.e., the inductor, thereby increasing the operating frequency of the second radiator 30. For example, the operating frequency of the second radiator 30 can be switched to the third resonant frequency band, so that the first radiator 10 and the second radiator 30 form a CA or ENDC combination state of the first and third resonant frequency bands.

[0071] Similarly, in another embodiment, the first matching module 40 includes an inductor and the second matching module 60 includes a capacitor.

[0072] When the second switch 52 is closed and the first switch 51, the third switch 53, and the fourth switch 54 are all open, the second radiator 30 is grounded through the second switch 52, so that the excitation signal excites the second radiator 30 to support the second resonant frequency band. At this time, the average frequency of the second resonant frequency band is greater than the average frequency of the fourth resonant frequency band.

[0073] When the fourth switch 54 is closed and the first switch 51, the second switch 52, and the third switch 53 are all open, the second radiator 30 is grounded through the fourth switch 54, so that the excitation signal excites the second radiator 30 to support the third resonant frequency band. At this time, the average frequency of the third resonant frequency band is less than the average frequency of the fourth resonant frequency band.

[0074] In some embodiments, both the first matching module 40 and the second matching module 60 consist only of inductors. When the second switch 52 and the fourth switch 54 are closed and the first switch 51 and the third switch 53 are open, the second radiator 30 is grounded through the second switch 52 and the fourth switch 54, so that the excitation signal excites the second radiator 30 to support the fifth resonant frequency band. The average frequency of the fifth resonant frequency band is greater than the average frequency of the fourth resonant frequency band. The inductance values ​​of the first matching module 40 and the second matching module 60 can be the same or different, and this is not limited.

[0075] In some embodiments, both the first matching module 40 and the second matching module 60 consist only of capacitors. When the second switch 52 and the fourth switch 54 are closed and the first switch 51 and the third switch 53 are open, the second radiator 30 is grounded through the second switch 52 and the fourth switch 54, so that the excitation signal excites the second radiator 30 to support the sixth resonant frequency band. The average frequency of the sixth resonant frequency band is less than the average frequency of the fourth resonant frequency band. The capacitance values ​​of the first matching module 40 and the second matching module 60 can be the same or different, and this is not limited.

[0076] In some embodiments, the first matching module 40 and the second matching module 60 can also be a hybrid circuit composed of impedance elements such as capacitors, inductors, or resistors. When the second switch 52 and the fourth switch 54 are closed and the first switch 51 and the third switch 53 are open, the second radiator 30 is grounded through the second switch 52 and the fourth switch 54, so that the excitation signal excites the second radiator 30 to support the seventh resonant frequency band. The frequency range of the seventh resonant frequency band is related to the specific parameter settings of the first matching module 40 and the second matching module 60, and can be set according to actual needs; no limitation is made here. The circuit designs of the first matching module 40 and the second matching module 60 can be the same or different; no limitation is made here.

[0077] In some embodiments, when the first switch 51 and the third switch 53 are closed and the second switch 52 and the fourth switch 54 are open, the first radiator 10, the first matching module 40, the second matching module 60, and the second radiator 30 are electrically connected to increase the radiation length of the first radiator 10, thereby increasing the radiating antenna aperture of the antenna device 100 and improving the communication efficiency of the antenna device 100. It should be noted that in such cases, the first matching module 40 and the second matching module 60 may each consist of only capacitors or only inductors.

[0078] In some embodiments, the first resonant frequency band covers either the B3 band or the B1 band.

[0079] The second resonant frequency band covers one of the N1, N40, or N78 frequency bands.

[0080] The third resonant frequency band covers one of the N1, N40, or N78 frequency bands.

[0081] Thus, multiple frequency bands can make the radiation mode of the antenna device 100 more diverse and increase the communication bandwidth covered by the antenna device 100.

[0082] Please see Figure 4 , Figure 4 This is another schematic diagram of the radiation efficiency of the antenna device 100 according to an embodiment of this application.

[0083] In one embodiment, when the first matching module 40 is an inductor, the second matching module 60 is a capacitor, and the first switch 51, the second switch 52, the third switch 53, and the fourth switch 54 are all in the off state, the feed source 20 feeds an excitation signal to the first radiator 10 through the feed point 11 to excite the first radiator 10 to support the B3 band (frequency range of 1.71-1.88GHz), and simultaneously excites the second radiator 30 to support the N41 band (frequency range of 2.496-2.69GHz). The first radiator 10 and the second radiator 30 form a CA state operation, such as a B3N41 combination. Figure 4 As shown. Among them, Figure 4 Curve S5 (SystemTot.Efficiency-B3N41) represents the total radiation efficiency of the signal radiated by the antenna device 100 when the first radiator 10 and the second radiator 30 work in a CA state combination of B3N41.

[0084] When the second switch 52 is closed and the first switch 51, the third switch 53, and the fourth switch 54 are open, the second radiator 30 is grounded through the second switch 52. The equivalent electrical length of the second radiator 30 can be reduced through the first matching module 40 (i.e., the inductor), increasing the operating frequency of the second radiator 30. In other words, the excitation signal excites the second radiator 30 to support the N78 frequency band (frequency range 3.4-3.6 GHz). At this time, the first radiator 10 and the second radiator 30 can form a B3N78 CA or ENDC combination state for operation, such as... Figure 4 As shown. Among them, Figure 4 The curve S6 (System Total Efficiency - B3N78) represents the total radiation efficiency of the signal radiated by the antenna device 100 when the first radiator 10 and the second radiator 30 work in a CA state combination of B3N78.

[0085] When the fourth switch 54 is closed and the first switch 51, the third switch 53, and the second switch 52 are open, the second radiator 30 is grounded through the fourth switch 54. The second matching module 60, i.e., the capacitor, can increase the equivalent electrical length of the second radiator 30, thereby reducing its operating frequency. In other words, the excitation signal can excite the second radiator 30 to support the N1 band (frequency range 1.92-1.98 GHz). At this time, the first radiator 10 and the second radiator 30 can form a B3N1 CA or ENDC combination state for operation, such as... Figure 4 As shown. Among them, Figure 4 The curve S7 (System Total Efficiency - B3N1) represents the total radiation efficiency of the signal radiated by the antenna device 100 when the first radiator 10 and the second radiator 30 work in a CA state combination of B3N1.

[0086] It is understood that in other embodiments, the excitation signal may also excite the first radiator 10 and the second radiator 30 to support other resonant frequency bands, which is not limited here.

[0087] It should be noted that in the antenna device 100 of this application embodiment, the second radiator 30 can be switched to different operating frequency bands by changing the state of the first switch 51, the second switch 52, the third switch 53 and the fourth switch 54. The second radiator 30 can form rich CA or ENDC states with the first radiator 10, which can better cover various frequency bands and thus improve the communication capability of the antenna device 100.

[0088] Please see Figure 5 In some embodiments, the antenna device 100 may further include a third matching module 71 and a fifth switch 55, wherein the third matching module 71 is grounded. One end of the fifth switch 55 is electrically connected to the first radiator 10, and the other end is electrically connected to the third matching module 71. The fifth switch 55 can be closed or opened to electrically connect or disconnect the third matching module 71 from the first radiator 10.

[0089] Thus, the state of the fifth switch 55 can electrically connect or disconnect the third matching module 71 from the first radiator 10, thereby changing the equivalent electrical length of the first radiator 10 and enabling the excitation signal to make the first radiator 10 support a resonant frequency band different from the first resonant frequency band. The first radiator 10 can form rich CA or ENDC combination states with the second radiator 30, which can better cover various frequency bands and thus improve the communication capability of the antenna device 100.

[0090] The third matching module 71 can be an impedance circuit, specifically one or more impedance elements such as capacitors, inductors, or resistors. The specific configuration can be set according to actual needs and is not limited here.

[0091] Please see Figure 6 In some embodiments, the antenna device 100 may further include a fourth matching module 72 and a sixth switch 56, wherein the fourth matching module 72 is grounded. One end of the sixth switch 56 is electrically connected to the first radiator 10, and the other end is electrically connected to the fourth matching module 72. The sixth switch 56 can be closed or opened to electrically connect or disconnect the fourth matching module 72 from the first radiator 10. The impedances of the third matching module 71 and the fourth matching module 72 may be different.

[0092] Thus, the state of the sixth switch 56 can electrically connect or disconnect the fourth matching module 72 from the first radiator 10, thereby changing the equivalent electrical length of the first radiator 10 and enabling the excitation signal to make the first radiator 10 support a resonant frequency band different from the first resonant frequency band. The first radiator 10 can form rich CA or ENDC combination states with the second radiator 30, which can better cover various frequency bands and thus improve the communication capability of the antenna device 100.

[0093] The fourth matching module 72 can be an impedance circuit, specifically one or more impedance components such as capacitors, inductors, or resistors. The specific configuration can be set according to actual needs and is not limited here.

[0094] Please see Figure 7 In some embodiments, the antenna device 100 may also include a fifth switch 55, a sixth switch 56, a third matching module 71, and a fourth matching module 72. When the fifth switch 55 and the sixth switch 56 are closed, the third matching module 71 and the fourth matching module 72 are electrically connected to the first radiator 10, thereby changing the equivalent electrical length of the first radiator 10 and enabling the excitation signal to make the first radiator 10 support a resonant frequency band different from the first resonant frequency band.

[0095] Please see Figure 8 and Figure 9 In some embodiments, the antenna device 100 includes an antenna switch 50, which includes a first switch 51 and a second switch 52, and the first switch 51 and the second switch 52 are separately packaged inside the antenna switch 50.

[0096] The antenna switch 50 may further include a first terminal 50a and a second terminal 50b. One end of the first terminal 50a is electrically connected to the first radiator 10, and the other end is electrically connected to the first switch 51. One end of the second terminal 50b is electrically connected to the second switch 52 and the first switch 51, and the other end is electrically connected to the first matching module 40.

[0097] Thus, the first terminal 50a of the antenna switch 50 is used to electrically connect to the first radiator 10, and the first switch 51 and the second switch 52 are placed in the same antenna switch 50 for easy operation.

[0098] Please see Figure 8 and Figure 9In some embodiments, the antenna switch 50 may include a third switch 53, a fourth switch 54, a fifth switch 55, and a sixth switch 56. One end of the third switch 53 is electrically connected to the first switch 51 and the first terminal 50a, and the other end is electrically connected to the second matching module 60. The third switch 53 is also electrically connected to the first radiator 10 via the first terminal 50a. One end of the fifth switch 55 is electrically connected to the sixth switch 56 and the first terminal 50a, and the other end is electrically connected to the third matching module 71. One end of the sixth switch 56 is electrically connected to the first terminal 50a, and the other end is electrically connected to the fourth matching module 72. The third switch 53, the fourth switch 54, the fifth switch 55, and the sixth switch 56 are encapsulated within the antenna switch 50. The antenna switch 50 may be an RFC switch.

[0099] In this way, the first switch 51, the second switch 52, the third switch 53, the fourth switch 54, the fifth switch 55 and the sixth switch 56 are grouped together in the same antenna switch 50 for easy operation by the user.

[0100] The antenna switch 50 may further include a third terminal 50c, a fourth terminal 50d, and a fifth terminal 50e. One end of the third terminal 50c is electrically connected to the third switch 53 and the fourth switch 54, and the other end is electrically connected to the second matching module 60. One end of the fourth terminal 50d is electrically connected to the fifth switch 55, and the other end is electrically connected to the third matching module 71. One end of the fifth terminal 50e is electrically connected to the sixth switch 56, and the other end is electrically connected to the fourth matching module 72.

[0101] It is understood that in some embodiments, the antenna device 100 may simultaneously include a first matching module 40, a second matching module 60, a third matching module 71, and a fourth matching module 72, and the antenna switch 50 may simultaneously include a first switch 51, a second switch 52, a third switch 53, a fourth switch 54, a fifth switch 55, and a sixth switch 56, such as... Figure 8 and Figure 9 As shown.

[0102] exist Figure 9 In the diagram, the USID pin is used to identify the identification code of the device controlled by the Mobile Industry Processor Interface (MIPI); the GND pin is used to ground the antenna switch 50; the SDATA pin is the data interface used to input control data; the VIO pin is connected to the power supply and used to input power signals; and the SCLK pin is used to input clock control signals.

[0103] Among them, the first matching module 40 and the second matching module 60, in cooperation with the first switch 51, the second switch 52, the third switch 53 and the fourth switch 54, can be used to change the equivalent electrical length of the second radiator 30, thereby changing the excitation signal to excite the first radiator 10 and / or the second radiator 30 to generate different resonant frequency bands, so that the first radiator 10 and the second radiator 30 can form rich CA or ENDC combination states, which can better cover various frequency bands and thus improve the communication capability of the antenna device 100.

[0104] The third matching module 71, in conjunction with the fifth switch 55 and the sixth switch 56, can be used to change the equivalent electrical length of the first radiator 10. The first matching module 40 and the second matching module 60, in conjunction with the first switch 51, the second switch 52, the third switch 53, and the fourth switch 54, can also increase the radiation length of the first radiator 10, thereby increasing the radiating aperture of the antenna device 100 and improving its radiation efficiency.

[0105] Please see Figure 10 In some embodiments, the antenna device 100 further includes a fifth matching module 80, through which the feed source 20 is electrically connected to the feed point 11. The fifth matching module 80 is used to perform impedance matching on the first radiator 10, thereby adjusting the resonant efficiency and radiation efficiency of the first radiator 10. The fifth matching module 80 can be an impedance circuit, specifically one or more impedance elements such as capacitors, inductors, or resistors, and can be configured according to actual needs without limitation.

[0106] Please see Figure 11 In some embodiments, the antenna device 100 further includes a sixth matching module 90, one end of which is electrically connected between the first radiator 10 and the first switch 51, and the other end is grounded.

[0107] Thus, under the excitation of the excitation signal, the setting of the sixth matching module 90 can change the resonance efficiency and radiation efficiency, thereby enabling the excitation signal to make the first radiator 10 support a resonance frequency band different from the first resonance frequency band. The first radiator 10 can form rich CA state or ENDC combination state with the second radiator 30, which can better cover various frequency bands and thus improve the communication capability of the antenna device 100.

[0108] The sixth matching module 90 can be an impedance circuit, specifically one or more impedance components such as capacitors, inductors, or resistors. The specific configuration can be set according to actual needs and is not limited here.

[0109] Please see Figure 12It is understood that in some embodiments, the antenna device 100 may simultaneously include a first matching module 40, a second matching module 60, a third matching module 71, a fourth matching module 72, a fifth matching module 80, and a sixth matching module 90, and the antenna switch 50 may simultaneously include a first switch 51, a second switch 52, a third switch 53, a fourth switch 54, a fifth switch 55, and a sixth switch 56.

[0110] Specifically, the third matching module 71, in conjunction with the fifth switch 55, and the fourth matching module 72, in conjunction with the sixth switch 56, can both be used to change the equivalent electrical length of the first radiator 10. The fifth matching module 80 and the sixth matching module 90 can change the resonant efficiency and radiation efficiency of the first radiator 10.

[0111] The first matching module 40 and the second matching module 60, in cooperation with the first switch 51, the second switch 52, the third switch 53 and the fourth switch 54, can be used to change the equivalent electrical length of the second radiator 30, thereby changing the excitation signal to excite the first radiator 10 and / or the second radiator 30 to generate different resonant frequency bands, so that the first radiator 10 and the second radiator 30 can form rich CA states, which can better cover various frequency bands and thus improve the communication capability of the antenna device 100.

[0112] With the cooperation of the first matching module 40, the second matching module 60, the first switch 51, the second switch 52, the third switch 53, and the fourth switch 54, can also increase the radiation length of the first radiator 10, thereby increasing the radiation aperture of the antenna device 100 and improving the radiation efficiency of the antenna device 100.

[0113] In summary, by adjusting the radiated equivalent electrical length and resonant efficiency of the first radiator 10, and by adjusting the equivalent electrical length of the second radiator 30, the first radiator 10 and the second radiator 30 can form a rich variety of CA states, thereby making the radiation modes of the antenna device 100 more diverse and increasing the communication bandwidth covered by the antenna device 100. This improves the communication capability of the antenna device 100 in two ways.

[0114] Please refer to Figure 13 , Figure 13 This is a schematic diagram of the structure of an electronic device 1000 according to an embodiment of this application. The electronic device 1000 includes a housing 200 and the aforementioned antenna device 100, which is disposed in the housing 200. For example, each radiator of the antenna device 100 may be disposed on the housing 200, and other electronic components or modules of the antenna device 100 may be disposed inside the housing 200.

[0115] In some embodiments, the housing 200 may include a metal mid-frame 201 and a metal frame 202, with the metal frame 202 disposed around the periphery of the metal mid-frame 201. Both the metal mid-frame 201 and the metal frame 202 may be made of metals or alloys such as aluminum alloy or magnesium alloy. The metal mid-frame 201 forms the main structure of the electronic device 1000, supporting functional modules such as a motherboard, camera module, and battery. The metal frame 202 forms the side frame of the electronic device 1000.

[0116] The metal frame 202 includes spaced-apart first metal branches 2021 and second metal branches 2022. In practical applications, the first metal branches 2021 and second metal branches 2022 can be formed by creating slits in the metal frame 202. The first metal branch 2021 forms the first radiator 10, and the second metal branch 2022 forms the second radiator 30. Therefore, the metal frame 202 can be reused to form each radiator, eliminating the need for separate radiators and simplifying the design of the antenna device 100.

[0117] In some embodiments, the metal frame 202 includes a first side 210 and a second side 220 connected to each other. The length of the first side 210 is greater than the length of the second side 220, that is, the first side 210 can be understood as the long side and the second side 220 can be understood as the short side.

[0118] When a user uses electronic device 100 in landscape mode, such as when playing games, the user's hands usually hold both ends of the electronic device (the left and right ends when the electronic device is used in landscape mode). In this case, the WiFi antenna is easily held by the user's hands, affecting the performance of the WiFi antenna. Therefore, the antenna device 100 is usually designed at the top of electronic device 1000, that is, located on the short side of electronic device 1000.

[0119] The term "top" refers to the portion of the electronic device 1000 that is positioned at the top when used in portrait mode. For example, when the electronic device 1000 is placed in portrait mode, its top is typically facing away from the ground. When the antenna device 100 is positioned at the top, the upper hemisphere of the antenna device 100 has better radiation efficiency, resulting in better communication performance for the electronic device 1000. In this embodiment, the electronic device 1000 is illustrated in portrait mode as an example. Figure 13 As shown. Understandably, in other embodiments, the electronic device 1000 can be used in portrait mode, landscape mode, or even tilted mode.

[0120] 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.

[0121] It should be noted that, in the embodiments of this application, "electrical connection" can be a direct connection between two electrical components or an indirect connection. For example, the electrical connection between A and B can be achieved by A and B being directly connected, or by A and B being indirectly connected through one or more other electrical components.

[0122] 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 in that, include: The first radiator includes the feed point; A feed source, which is electrically connected to the feed point, is used to feed an excitation signal to the first radiator through the feed point to excite the first radiator to support the first resonant frequency band. A second radiator has a gap between it and the first radiator, and the second radiator is electromagnetically coupled to the first radiator through the gap. The first matching module is electrically connected to the second radiator; The first switch has one end electrically connected to the first radiator and the other end electrically connected to the first matching module; as well as The second switch has one end electrically connected to the first matching module and the other end grounded. When the first switch is closed and the second switch is open, the first radiator, the first matching module and the second radiator are electrically connected to increase the radiation length of the first radiator. When the first switch is open and the second switch is closed, the second radiator is grounded through the second switch, so that the excitation signal excites the second radiator to support the second resonant frequency band. The second matching module is electrically connected to the second radiator; The third switch has one end electrically connected to the first radiator and the other end electrically connected to the second matching module; The fourth switch has one end electrically connected to the second matching module and the other end grounded. When the third switch is closed and the fourth switch is open, the first radiator, the second matching module, and the second radiator are electrically connected to increase the radiation length of the first radiator. When the third switch is open and the fourth switch is closed, the second radiator is grounded through the fourth switch, so that the excitation signal excites the second radiator to support the third resonant frequency band.

2. The antenna device according to claim 1, characterized in that: The first matching module includes one of a capacitor and an inductor; The second matching module includes another of the capacitor and the inductor.

3. The antenna device according to claim 1, characterized in that: The first resonant frequency band covers either the B3 frequency band or the B1 frequency band; The second resonant frequency band covers one of the N1, N40, or N78 frequency bands; The third resonant frequency band covers one of the N1, N40, or N78 frequency bands.

4. The antenna device according to any one of claims 1 to 3, characterized in that, The antenna device further includes a third matching module and a fifth switch, wherein the third matching module is grounded; One end of the fifth switch is electrically connected to the first radiator, and the other end is electrically connected to the third matching module. The fifth switch can be closed or opened to make the third matching module electrically connected or disconnected from the first radiator.

5. The antenna device according to claim 4, characterized in that, The antenna device further includes a fourth matching module and a sixth switch, wherein the fourth matching module is grounded; One end of the sixth switch is electrically connected to the first radiator, and the other end is electrically connected to the fourth matching module. The sixth switch can be closed or opened to make the fourth matching module electrically connected or disconnected from the first radiator. The impedances of the third matching module and the fourth matching module are different.

6. The antenna device according to any one of claims 1 to 3, characterized in that: The antenna device includes an antenna switch, which includes a first switch and a second switch, and the first switch and the second switch are encapsulated inside the antenna switch.

7. The antenna device according to any one of claims 1 to 3, characterized in that, The antenna device further includes a fifth matching module, and the feed source is electrically connected to the feed point through the fifth matching module.

8. The antenna device according to any one of claims 1 to 3, characterized in that, The antenna device further includes a sixth matching module, one end of which is electrically connected between the first radiator and the first switch, and the other end is grounded.

9. An electronic device, characterized in that, include: case; An antenna device disposed in the housing, wherein the antenna device is the antenna device according to any one of claims 1 to 8.

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