CN117766985A

CN117766985A - Antenna device and electronic equipment

Info

Publication number: CN117766985A
Application number: CN202311851855.0A
Authority: CN
Inventors: 张云帆
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2023-12-28
Filing date: 2023-12-28
Publication date: 2024-03-26

Abstract

The embodiment of the application provides an antenna device and electronic equipment, the antenna device includes: the first radiator comprises a first feeding point and a first grounding point which are arranged at intervals, and the first feeding point is used for feeding a first excitation signal; a second radiator having a first gap with the first radiator, the second radiator being coupled to the first radiator through the first gap, the second radiator including a second ground point; the first excitation signal is used for exciting the first radiator to generate first resonance and is used for exciting the first radiator and the second radiator to generate second resonance and third resonance together; the first resonance is a ring mode of the WiFi communication first frequency band, the second resonance comprises a first ring mode and a first parasitic resonance mode of the WiFi communication second frequency band, and the third resonance comprises a second ring mode and a second parasitic resonance mode of the WiFi communication second frequency band. According to the antenna device, the miniaturization design of the WiFi antenna can be achieved, and the performance of WiFi communication can be improved.

Description

Antenna device and electronic equipment

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to an antenna device and an electronic device.

Background

With the development of communication technology, antennas of electronic devices such as smartphones are increasing, for example, 4G antennas, 5G antennas, wiFi antennas, GPS antennas, and the like. More and more antennas occupy a lot of layout space inside the electronic device.

On the other hand, electronic devices such as smartphones tend to be miniaturized, thinned, and layout space available for arranging antennas is more and more limited. Therefore, in such a case, how to miniaturize the antenna to reduce the space occupied by the antenna becomes a problem that needs to be continuously faced.

Disclosure of Invention

The embodiment of the application provides an antenna device and electronic equipment, which can realize miniaturization of a WiFi antenna and reduce the occupied space of the WiFi antenna.

An embodiment of the present application provides an antenna apparatus, including:

the first radiator comprises first feed points and first grounding points which are arranged at intervals, wherein the first feed points are used for feeding first excitation signals, and the first grounding points are grounded;

a second radiator having a first gap between the second radiator and the first radiator, the second radiator being coupled to the first radiator through the first gap, the second radiator including a second ground point, the second ground point being grounded;

wherein the first excitation signal is used for exciting the first radiator to generate first resonance and is used for exciting the first radiator and the second radiator to generate second resonance and third resonance together; the first resonance is a ring mode of a WiFi communication first frequency band formed on the first radiator; the second resonance comprises a first ring mode of a WiFi communication second frequency band formed on the first radiator and a first parasitic resonance mode of the WiFi communication second frequency band formed on the second radiator, and the resonance current direction of the first parasitic resonance mode is the same as the main resonance current direction of the first ring mode; the third resonance comprises a second ring mode of the WiFi communication second frequency band formed on the first radiator and a second parasitic resonance mode of the WiFi communication second frequency band formed on the second radiator, and the resonance current direction of the second parasitic resonance mode is opposite to the main resonance current direction of the second ring mode.

The embodiment of the application also provides electronic equipment, which comprises:

a housing;

the antenna device is arranged on the shell, and the antenna device is any embodiment of the antenna device.

According to the antenna device, the annular mode of the WiFi communication first frequency band is formed through the first radiator, compared with the length of one quarter wavelength required by a conventional WiFi antenna, the length of the annular mode antenna is far smaller than one quarter wavelength of WiFi, so that the length of the WiFi antenna can be reduced, and the miniaturized design of the WiFi antenna is realized; in addition, through second resonance and third resonance jointly cover the second frequency channel of wiFi communication, can realize the duplex wave of wiFi communication second frequency channel and cover, form fine double resonance, consequently can improve the performance of wiFi communication.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a first structure of an antenna device according to an embodiment of the present application.

Fig. 2 is a schematic diagram of a first resonant current distribution of the antenna device shown in fig. 1.

Fig. 3 is a schematic diagram of a second resonant current distribution of the antenna device shown in fig. 1.

Fig. 4 is a schematic diagram of a third resonant current distribution of the antenna device shown in fig. 1.

Fig. 5 is a schematic diagram of a first equivalent resonant current distribution of the antenna device shown in fig. 1.

Fig. 6 is a schematic diagram of a second equivalent resonant current distribution of the antenna device shown in fig. 1.

Fig. 7 is a schematic diagram illustrating a first S-parameter and radiation efficiency simulation of an antenna device according to an embodiment of the present application.

Fig. 8 is a schematic diagram of a second structure of an antenna device according to an embodiment of the present application.

Fig. 9 is a schematic diagram of a first resonant current distribution of the antenna device shown in fig. 8.

Fig. 10 is a schematic diagram of a second resonant current distribution of the antenna device shown in fig. 8.

Fig. 11 is a schematic diagram of a third structure of an antenna device according to an embodiment of the present application.

Fig. 12 is a schematic diagram of a first resonant current distribution of the antenna device shown in fig. 11.

Fig. 13 is a schematic diagram of a second resonant current distribution of the antenna device shown in fig. 11.

Fig. 14 is a schematic diagram of a third resonant current distribution of the antenna device shown in fig. 11.

Fig. 15 is a diagram showing a fourth resonant current distribution of the antenna device shown in fig. 11.

Fig. 16 is a schematic diagram illustrating a second S-parameter and radiation efficiency simulation of the antenna device according to the embodiment of the present application.

Fig. 17 is a schematic diagram of a fourth structure of an antenna device according to an embodiment of the present application.

Fig. 18 is a schematic diagram showing a first resonant current distribution of the antenna device shown in fig. 17.

Fig. 19 is a schematic diagram showing a second resonant current distribution of the antenna device shown in fig. 17.

Fig. 20 is a schematic diagram of a third resonant current distribution of the antenna device shown in fig. 17.

Fig. 21 is a schematic diagram of a fifth configuration of an antenna device according to an embodiment of the present application.

Fig. 22 is a schematic diagram showing a first resonant current distribution of the antenna device shown in fig. 21.

Fig. 23 is a schematic diagram showing a second resonant current distribution of the antenna device shown in fig. 21.

Fig. 24 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which are within the scope of the protection of the present application, will be within the skill of the art without inventive effort.

The embodiment of the application provides an antenna device, which can be applied to electronic equipment. The electronic device may be, for example, a smart phone, a tablet computer, a game device, an AR (Augmented Reality ) device, a notebook computer, a desktop computing device, or the like having a wireless communication function.

Referring to fig. 1, fig. 1 is a schematic diagram of a first structure of an antenna device 100 according to an embodiment of the present application. The antenna device 100 includes a first radiator 10 and a second radiator 20 disposed at a spacing.

Both the first radiator 10 and the second radiator 20 may be used for radiating wireless signals. The first radiator 10 and the second radiator 20 may be antenna radiators in the forms of FPC (Flexible Printed Circuit, flexible circuit board), LDS (Laser Direct Structure, laser direct structuring), PDS (Printing Direct Structure, printing direct structuring), MDA (in-mold injection) or antenna radiators formed by conductor structures of electronic devices, metal wires on circuit boards, and the like. In practical applications, the first radiator 10 and the second radiator 20 may be different antenna radiators, or may be the same antenna radiator. The shape, size, etc. of the first radiator 10 and the second radiator 20 may be set according to actual needs.

Wherein the first radiator 10 comprises a first feeding point 11 and a first grounding point 12 arranged at intervals. The first feed point 11 is for feeding a first excitation signal. The first ground point 12 is grounded, for example, may be electrically connected to a system ground of the electronic device to achieve grounding. Thus, the first radiator 10 may form a loop antenna radiator. In some embodiments, the first feeding point 11 and the first ground point 12 may be disposed at both ends of the first radiator 10, respectively.

The second radiator 20 has a first gap 41 between it and the first radiator 10. The second radiator 20 is coupled to the first radiator 10 through a first slit 41. Thus, when feeding an excitation signal to the first radiator 10 via the feed point 11, the excitation signal can also be coupled to the second radiator 20. The second radiator 20 comprises a second ground point 21. The second ground point 21 is grounded, for example, also electrically connected to the system ground of the electronic device to realize the grounding. In some embodiments, the second ground point 21 may be disposed at a position between both ends of the second radiator 20 such that the second radiator 20 forms a T-shaped antenna radiator.

In some embodiments, the antenna apparatus 100 further includes a first feed 51 and a first matching module M1. The first feed 51 and the first matching module M1 may be disposed on a circuit board of the electronic device, for example, on a motherboard. The first feed 51 is electrically connected to the first feed point 11 through the first matching module M1. The first feed source 51 is used for providing the first excitation signal, and feeds the first excitation signal to the first radiator 10 through the first feed point 11. In some embodiments, the first excitation signal is a WiFi excitation signal. The first matching module M1 is an impedance module, and may include one or more of inductance and capacitance. The first matching module M1 is configured to provide impedance matching for the first radiator 10 and the second radiator 20.

In this embodiment, the first excitation signal is used to excite the first radiator 10 to generate a first resonance, and to excite the first radiator 10 and the second radiator 20 to generate a second resonance and a third resonance together.

Wherein the first resonance is a ring mode of the WiFi communication first frequency band formed on the first radiator 10.

The second resonance includes a first ring mode of the WiFi communication second frequency band formed on the first radiator 10, and a first parasitic resonance mode of the WiFi communication second frequency band formed on the second radiator 20. The resonance current direction of the first parasitic resonance mode is the same as the main resonance current direction of the first ring mode.

The third resonance includes a second ring mode of the WiFi communication second frequency band formed on the first radiator 10, and a second parasitic resonance mode of the WiFi communication second frequency band formed on the second radiator 20. The second parasitic resonant mode has a resonant current direction opposite to the main resonant current direction of the second ring mode.

Accordingly, the antenna device 100 may cover a first frequency band of WiFi communication through a loop mode formed by the first radiator 10, and jointly cover a second frequency band of WiFi communication through a second resonance (including a first loop mode and a first parasitic resonance mode) and a third resonance (including a second loop mode and a second parasitic resonance mode).

In some embodiments, the first frequency band of WiFi communication is the 2.4GHz frequency band of WiFi communication (frequency range 2.4GHz-2.5 GHz), and the second frequency band of WiFi communication is the 5GHz frequency band of WiFi communication (frequency range 5.15GHz-5.85 GHz). In this case, the first radiator 10 is a WiFi antenna with a frequency band of 2.4GHz, and the first radiator 10 and the second radiator 20 are jointly used as a WiFi antenna with a frequency band of 5 GHz. The center frequency of the third resonance is larger than that of the second resonance, and the second resonance and the third resonance jointly form a resonance bandwidth for supporting a second frequency band of WiFi communication. For example, the center frequency of the second resonance may be around 5.2GHz and the center frequency of the third resonance may be around 6.3GHz, so that the second resonance and the third resonance may together form a resonance bandwidth for supporting the 5GHz band.

Referring to fig. 2 to 4, fig. 2 is a first resonant current distribution diagram of the antenna device 100 shown in fig. 1, fig. 3 is a second resonant current distribution diagram of the antenna device 100 shown in fig. 1, and fig. 4 is a third resonant current distribution diagram of the antenna device 100 shown in fig. 1.

As shown in fig. 2, the first resonance forms a first resonance current I between the first ground point 12 of the first radiator 10 to the first feeding point 11 ₁ . Wherein the first resonant current I ₁ Is a loop current and thus the first resonance may form a loop mode.

The second resonance includes a first ring mode and a first parasitic resonance mode. The third resonance includes a second ring mode and a second parasitic resonance mode. The first and second ring modes have a common current zero point P on the first radiator 10. The current zero P is close to the first feed point 11.

As shown in the figure3, the first ring mode forms a second resonant current I between the first ground point 12 and the current zero point P ₂ And forming a sixth resonance current I between the current zero point P and the first feeding point 11 ₆ . Sixth resonant current I ₆ With a second resonant current I ₂ And the reverse direction. Sixth resonant current I ₆ With a second resonant current I ₂ Together forming a circular mode current. Wherein the second resonant current I ₂ Is the primary resonant current of the first ring mode. In some embodiments, the second resonant current I ₂ The second frequency band of the WiFi communication is a quarter-wavelength resonant current, for example, the 5GHz frequency band of the WiFi communication is a quarter-wavelength resonant current.

The first parasitic resonant mode forms a third resonant current I on the second radiator 20 ₃ . Third resonant current I ₃ With a second resonant current I ₂ And the same direction. In some embodiments, the third resonant current I ₃ The second frequency band of WiFi communication is half-wavelength resonant current, for example, the 5GHz frequency band of WiFi communication is half-wavelength resonant current.

As shown in fig. 4, the second ring mode forms a fourth resonant current I between the first ground point 12 and the current zero point P ₄ And a seventh resonance current I is formed between the current zero point P and the first feeding point 11 ₇ . Seventh resonant current I ₇ And a fourth resonant current I ₄ And the reverse direction. Seventh resonant current I ₇ And a fourth resonant current I ₄ Together forming a circular mode current. Wherein the fourth resonant current I ₄ Is the main resonant current of the second ring mode. In some embodiments, the fourth resonant current I ₄ The second frequency band of the WiFi communication is a quarter-wavelength resonant current, for example, the 5GHz frequency band of the WiFi communication is a quarter-wavelength resonant current.

The second parasitic resonant mode forms a fifth resonant current I on the second radiator 20 ₅ . Fifth resonant current I ₅ And a fourth resonant current I ₄ And the reverse direction. In some embodiments, a fifth resonant current I ₅ The second frequency band of WiFi communication is half-wavelength resonant current, for example, the 5GHz frequency band of WiFi communication is half-wavelength resonant current.

In some embodiments, for the first radiator 10, the first feeding point 11 may be disposed close to the first slot 41, and the first ground point 12 is distant from the first slot 41. For example, the first feeding point 11 is provided at an end portion of the first radiator 10 close to the first slit 41, and the first grounding point 12 is provided at an end portion distant from the first slit 41.

In this case, the length of the WiFi antenna in the first frequency band (the length between the first feeding point 11 of the first radiator 10 and the first grounding point 12, i.e., the length of the first radiator 10) is about one eighth of the wavelength corresponding to the first frequency band of WiFi communication, for example, the length of the WiFi communication 2.4GHz band antenna is about one eighth of the wavelength corresponding to the 2.4GHz band, which is much smaller than the quarter wavelength length required by the conventional WiFi antenna.

Referring to fig. 5 and 6, fig. 5 is a schematic diagram of a first equivalent resonant current distribution of the antenna device 100 shown in fig. 1, and fig. 6 is a schematic diagram of a second equivalent resonant current distribution of the antenna device 100 shown in fig. 1.

It will be appreciated that since the current zero point P is close to the first feed point 11, the sixth resonant current I ₆ The current path of the second resonant circuit is very short and can be almost ignored in practical application, so that the second resonant circuit plays a main radiation role in the second resonance ₂ And a third resonant current I ₃ . The second resonance can thus be regarded as a modified form of the E-E radiation mode, the third resonance current I ₃ With a second resonant current I ₂ Together forming an E-E radiation pattern as shown in fig. 5.

Also, since the current zero point P is close to the first feeding point 11, the seventh resonance current I ₇ The current path of the third resonance is very short and can be almost ignored in practical application, so the third resonance plays a main role in radiation and is a fourth resonance current I ₄ And a fifth resonant current I ₅ . The third resonance can thus be regarded as a modified form of the E-E balanced mode, the fifth resonance current I ₅ And a fourth resonant current I ₄ Together, form an E-E balanced mode, as shown in fig. 6.

Referring to fig. 7, fig. 7 is a schematic diagram illustrating a first S-parameter and radiation efficiency simulation of the antenna device 100 according to the embodiment of the present application. Curve L1 is an S-parameter curve of the antenna device 100, curve L2 is a theoretical radiation efficiency curve of the antenna device 100, and curve L3 is a total radiation efficiency curve of the antenna device 100. The marking point 1 may be a center frequency corresponding to the first resonance, and the resonance frequency of the marking point 1 is about 2.457GHz. The marking point 2 may be a center frequency corresponding to the second resonance, and the resonance frequency of the marking point 2 is about 5.222GHz. The marking point 3 may be a center frequency corresponding to the third resonance, and the resonance frequency of the marking point 3 is about 6.272GHz. As can be seen from fig. 7, the antenna device 100 has good resonance characteristics in both the 2.4GHz band and the 5GHz band of WiFi.

According to the antenna device 100 disclosed by the embodiment of the application, the first radiator 10 forms the annular mode of the first WiFi communication frequency band (for example, the frequency band of 2.4 GHz), compared with the length of a quarter wavelength required by a conventional WiFi antenna, the length of the annular mode antenna is far smaller than the length of the quarter wavelength of WiFi, so that the length of the WiFi antenna can be reduced, and the miniaturized design of the WiFi antenna is realized; in addition, through the second resonance and the second frequency band (for example, 5GHz frequency band) of the WiFi communication that covers jointly of third resonance, can realize the dual wave of wiFi communication second frequency band and cover, form fine double resonance, consequently can improve the performance of wiFi communication.

In some embodiments, referring to fig. 8, fig. 8 is a schematic diagram of a second structure of an antenna device 100 according to an embodiment of the present application.

The second radiator 20 also comprises a second feed point 22. The second feeding point 22 is spaced apart from the second ground point 21. The second feed point 22 is for feeding a second excitation signal.

In some embodiments, the antenna apparatus 100 further includes a second feed 52 and a second matching module M2. The second feed 52 and the second matching module M2 may be disposed on a circuit board of the electronic device, for example, on a motherboard. The second feed 52 is electrically connected to the second feed point 22 through the second matching module M2. The second feed 52 is used for providing a second excitation signal and feeding the second excitation signal to the second radiator 20 via the second feed point 22. In some embodiments, the second excitation signal is a Mid High Band (MHB) excitation signal, and the frequency range of the Mid High Band (MHB) includes 1710MHz to 2690MHz. The second matching module M2 is an impedance module, and may include one or more of inductance and capacitance. The second matching module M2 is configured to provide impedance matching to the second radiator 20.

Wherein the second excitation signal is used to excite the second radiator 20 to generate a fourth resonance and a fifth resonance. The fourth resonance is a loop mode and the fifth resonance is an IFA (Inverted-F Antenna) mode. The fourth resonance and the fifth resonance both cover medium high frequency (MHB) communications. Thus, the second radiator 20 can be multiplexed to realize medium-high frequency (MHB) communication.

Referring to fig. 9 and 10, fig. 9 is a schematic diagram of a first resonant current distribution of the antenna device 100 shown in fig. 8, and fig. 10 is a schematic diagram of a second resonant current distribution of the antenna device 100 shown in fig. 8.

As shown in fig. 9, the fourth resonance forms an eighth resonance current I between the second ground point 21 of the second radiator 20 and the second feeding point 22 ₈ . Wherein the eighth resonance current I ₈ Is a loop current and thus the fourth resonance may form a loop mode.

As shown in fig. 10, the second radiator 20 includes a first free end 20a remote from the first slit 41. The second feeding point 22 is located between the first free end 20a and the second ground point 21. The fifth resonance forms a ninth resonance current I between the second ground point 21 of the second radiator 20 and the first free end 20a ₉ The fifth resonance may thus form an IFA mode.

In this embodiment of the present application, the second radiator 20 may generate the fourth resonance and the fifth resonance, and both the fourth resonance and the fifth resonance cover the middle-high frequency (MHB) communication, so that the second radiator 20 may be multiplexed to form a middle-high frequency (MHB) antenna, so that the number of the whole antennas of the antenna apparatus 100 can be reduced, and therefore, the miniaturization degree of the antenna apparatus 100 is equivalently further improved.

In some embodiments, reference is made to fig. 11, 17 and 21, where fig. 11 is a third structural schematic diagram of the antenna device 100 according to the embodiment of the present application, fig. 17 is a fourth structural schematic diagram of the antenna device 100 according to the embodiment of the present application, and fig. 21 is a fifth structural schematic diagram of the antenna device 100 according to the embodiment of the present application.

The antenna device 100 further comprises a third radiator 30. The third radiator 30 may also be used for radiating wireless signals. The third radiator 30 may be an antenna radiator in a form such as FPC, LDS, PDS, MDA, or may be an antenna radiator formed by a conductor structure of an electronic device, a metal trace on a circuit board, or the like.

The third radiator 30 is spaced apart from the second radiator 20. A second gap 42 is provided between the third radiator 30 and the second radiator 20. The third radiator 30 is coupled to the second radiator 20 through a second slot 42. Thus, the excitation signal of the wireless communication may be transmitted between the second radiator 20 and the third radiator 30 by coupling. In some embodiments, the second radiator 20 includes a first free end 20a, the first free end 20a being distal from the first gap 41, the first free end 20a being oriented toward the third radiator 30. The third radiator 30 comprises a second free end 30a, the second free end 30a facing the second radiator 20. The second gap 42 is located between the first free end 20a and the second free end 30 a.

The second radiator 20 or the third radiator 30 includes a third feeding point 31. The third feed point 31 is for feeding a third excitation signal. The third excitation signal may be a Mid High Band (MHB) excitation signal or an Ultra High Band (UHB) excitation signal. In some embodiments, the ultra-high frequency (UHB) frequency range includes 3.3GHz to 3.8GHz, for example, the ultra-high frequency (UHB) may include the N78 (frequency range 3.3GHz to 3.8 GHz) band.

In some embodiments, the antenna apparatus 100 further comprises a third feed 53 and a third matching module M3. The third feed 53 and the third matching module M3 may be disposed on a circuit board of the electronic device, for example, on a motherboard. The third feed 53 is electrically connected to the third feed point 31 through the third matching module M3. The third feed 53 is used for providing a third excitation signal, and feeds the third excitation signal to the second radiator 20 or the third radiator 30 through the third feeding point 31. In some embodiments, the third excitation signal may include at least one of a mid-high frequency (MHB) excitation signal, an ultra-high frequency (UHB) excitation signal.

Wherein the third excitation signal is used to excite the second radiator 20 and the third radiator 30 to jointly generate a sixth resonance and a seventh resonance. Wherein the sixth resonance is an E-E radiation mode and the seventh resonance is an E-E balance mode. The sixth resonance, the seventh resonance each cover medium high frequency (MHB) communication or each cover ultra high frequency (UHB) communication. Thus, the second radiator 20 and the third radiator 30 can be multiplexed to realize medium-high frequency (MHB) communication or ultra-high frequency (UHB) communication together.

In some embodiments, as shown in fig. 11, the third feeding point 31 is disposed at the second radiator 20. The third feeding point 31 is spaced apart from the second ground point 21. For example, the third feeding point 31 may be disposed at a side closer to the second slit 42 than the second ground point 21. The third radiator 30 includes a third ground point 32. The third ground point 32 is grounded, for example, electrically connected to the system ground of the electronic device, to achieve grounding.

Referring to fig. 12 and 13, fig. 12 is a schematic diagram of a first resonant current distribution of the antenna device 100 shown in fig. 11, and fig. 13 is a schematic diagram of a second resonant current distribution of the antenna device 100 shown in fig. 11.

Wherein the sixth resonance forms a tenth resonance current I at the second radiator 20 ₁₀ And forming an eleventh resonance current I at the third radiator 30 ₁₁ . Specifically, a tenth resonant current I ₁₀ An eleventh resonance current I formed between the third feeding point 31 and the first free end 20a ₁₁ Formed between the second free end 30a and the third ground point 32. Tenth resonant current I ₁₀ With eleventh resonant current I ₁₁ And the same direction. Thus, the sixth resonance may form an E-E radiation mode.

Seventh resonance forms a twelfth resonance current I at the second radiator 20 ₁₂ And forming a thirteenth resonance current I at the third radiator 30 ₁₃ . Specifically, a twelfth resonant current I ₁₂ A thirteenth resonance current I formed between the third feeding point 31 and the first free end 20a ₁₃ Formed between the second free end 30a and the third ground point 32. Twelfth resonant current I ₁₂ With thirteenth resonant current I ₁₃ And the reverse direction. Thus, the seventh resonance may form an E-E balanced mode.

In some embodiments, in the case of the antenna device 100 having the structure shown in fig. 11, the third excitation signal is further used to excite the second radiator 20 to generate the eighth resonance and the ninth resonance. Wherein the eighth resonance is a ring mode and the ninth resonance is an IFA mode. In this case, it is possible to set the eighth resonance and the ninth resonance to each cover medium-high frequency (MHB) communication, and the sixth resonance and the seventh resonance to each cover ultra-high frequency (UHB) communication. For example, the eighth resonance and the ninth resonance both cover medium-high frequency (MHB) communications, and the sixth resonance and the seventh resonance both cover the N78 frequency band.

Referring to fig. 14 and 15 together, fig. 14 is a schematic diagram of a third resonant current distribution of the antenna device 100 shown in fig. 11, and fig. 15 is a schematic diagram of a fourth resonant current distribution of the antenna device 100 shown in fig. 11.

As shown in fig. 14, the eighth resonance forms a fourteenth resonance current I at the second radiator 20 ₁₄ . Specifically, a fourteenth resonant current I ₁₄ Formed between the second ground point 21 and the third feed point 31. Wherein the fourteenth resonant current I ₁₄ Is the loop current and thus the eighth resonance may form a loop mode.

As shown in fig. 15, the ninth resonance forms a fifteenth resonance current I at the second radiator 20 ₁₅ . Specifically, a fifteenth resonant current I ₁₅ Formed between the second ground point 21 and the first free end 20a.

Referring to fig. 16, fig. 16 is a schematic diagram illustrating a second S-parameter and radiation efficiency simulation of the antenna device 100 according to the embodiment of the present application. Curve L4 is an S-parameter curve of the antenna device 100, curve L5 is a theoretical radiation efficiency curve of the antenna device 100, and curve L6 is a total radiation efficiency curve of the antenna device 100. The marking point 1 and the marking point 2 may be center frequencies corresponding to the eighth resonance and the ninth resonance, the resonance frequency of the marking point 1 is about 2.086GHz, and the resonance frequency of the marking point 2 is about 2.674GHz. The marking point 3 and the marking point 4 can be the center frequencies corresponding to the sixth resonance and the seventh resonance, the resonance frequency of the marking point 3 is about 3.479GHz, and the resonance frequency of the marking point 4 is about 4.2GHz. As can be seen from fig. 16, the antenna device 100 has good resonance characteristics at both medium-high frequency (MHB) and ultra-high frequency (UHB).

The antenna device 100 of the embodiment of the present application may multiplex the second radiator 20 to generate the eighth resonance and the ninth resonance to cover medium-high frequency (MHB) communication to form a medium-high frequency (MHB) antenna, and may multiplex the second radiator 20 and the third radiator 30 together to generate the sixth resonance and the seventh resonance to cover ultra-high frequency (UHB) communication to form an ultra-high frequency (UHB) antenna. Therefore, the number of antennas of the antenna device 100 as a whole can be reduced, and the miniaturization of the antenna device 100 can be equivalently further improved.

In some embodiments, as shown in fig. 17, the third feeding point 31 is provided at the third radiator 30. The third radiator 30 further includes a third ground point 32, the third ground point 32 being grounded. The third ground point 32 is spaced apart from the third feed point 31. For example, the third feeding point 31 may be disposed at a side closer to the second slit 42 than the third ground point 32.

Referring to fig. 18 and 19 together, fig. 18 is a schematic diagram of a first resonant current distribution of the antenna device 100 shown in fig. 17, and fig. 19 is a schematic diagram of a second resonant current distribution of the antenna device 100 shown in fig. 17.

Wherein the sixth resonance forms a tenth resonance current I at the second radiator 20 ₁₀ And forming an eleventh resonance current I at the third radiator 30 ₁₁ . Specifically, a tenth resonant current I ₁₀ An eleventh resonance current I formed between the second grounding point 21 and the first free end 20a ₁₁ Formed between the second free end 30a and the third ground point 32. Tenth resonant current I ₁₀ With eleventh resonant current I ₁₁ And the same direction. Thus, the sixth resonance may form an E-E radiation mode.

Seventh resonance forms a twelfth resonance current I at the second radiator 20 ₁₂ And forming a thirteenth resonance current I at the third radiator 30 ₁₃ . Specifically, a twelfth resonant current I ₁₂ A thirteenth resonance current I formed between the second grounding point 21 and the first free end 20a ₁₃ Formed between the second free end 30a and the third ground point 32. Twelfth resonant current I ₁₂ With thirteenth resonant current I ₁₃ And the reverse direction. Thus, the seventh resonance may form an E-E balanced mode.

In some embodiments, referring to fig. 20, fig. 20 is a schematic diagram of a third resonant current distribution of the antenna device 100 shown in fig. 17.

In the case of the antenna device 100 having the structure shown in fig. 17, the third excitation signal is also used to excite the third radiator 30 to generate tenth resonance between the third ground point 32 and the third feed point 31. Tenth resonance forms a sixteenth resonance current I between the third ground point 32 to the third feed point 31 ₁₆ . Sixteenth resonant current I ₁₆ Is a loop current and therefore the tenth resonance may form a loop mode.

Wherein, the center frequency of the tenth resonance is smaller than the center frequency of the sixth resonance and the center frequency of the seventh resonance. For example, in some embodiments, the tenth resonance covers medium-high frequency (MHB) communication, the sixth resonance and the seventh resonance each cover ultra-high frequency (UHB) communication, in which case the overall communication bandwidth of the antenna apparatus 100 can be extended while covering medium-high frequency (MHB) communication and ultra-high frequency (UHB) communication. In other embodiments, the sixth resonance, the seventh resonance, and the tenth resonance all cover a middle-high frequency (MHB) communication, where the tenth resonance covers a lower frequency band in the middle-high frequency (MHB) communication, and the sixth resonance and the seventh resonance all cover a higher frequency band in the middle-high frequency (MHB) communication, where the communication bandwidth of the middle-high frequency (MHB) can be extended, and the communication performance of the middle-high frequency (MHB) can be improved.

In some embodiments, as shown in fig. 21, wherein the third feeding point 31 is provided to the third radiator 30, and the third radiator 30 is not provided with a ground point. For example, the third feeding point 31 may be disposed at an end of the third radiator 30 remote from the second slit 42.

Referring to fig. 22 and 23 simultaneously, fig. 22 is a schematic diagram of a first resonant current distribution of the antenna device 100 shown in fig. 21, and fig. 23 is a schematic diagram of a second resonant current distribution of the antenna device 100 shown in fig. 21.

Wherein the sixth resonance forms a tenth resonance current I at the second radiator 20 ₁₀ And forming an eleventh resonance current I at the third radiator 30 ₁₁ . Specifically, a tenth resonant current I ₁₀ An eleventh resonance current I formed between the second grounding point 21 and the first free end 20a ₁₁ Formed at the second free end 30a and the third free endBetween the feed points 31. Tenth resonant current I ₁₀ With eleventh resonant current I ₁₁ And the same direction. Thus, the sixth resonance may form an E-E radiation mode.

Seventh resonance forms a twelfth resonance current I at the second radiator 20 ₁₂ And forming a thirteenth resonance current I at the third radiator 30 ₁₃ . Specifically, a twelfth resonant current I ₁₂ A thirteenth resonance current I formed between the second grounding point 21 and the first free end 20a ₁₃ Formed between the second free end 30a and the third feeding point 31. Twelfth resonant current I ₁₂ With thirteenth resonant current I ₁₃ And the reverse direction. Thus, the seventh resonance may form an E-E balanced mode.

In this case, the third radiator 30 does not need to be provided with a ground point, and thus the overall structural design of the antenna device 100 can be simplified.

The embodiment of the application also provides electronic equipment. The electronic device may be, for example, a smart phone, a tablet computer, a game device, an AR (Augmented Reality ) device, a notebook computer, a desktop computing device, or the like having a wireless communication function.

Referring to fig. 24, fig. 24 is a schematic structural diagram of an electronic device 1000 according to an embodiment of the present application. The electronic device 1000 includes a housing 200 and the antenna device 100 of any of the above embodiments, where the antenna device 100 is disposed in the housing 200. For example, the radiator of the antenna device 100 may be disposed on the housing 200, and the feed source, the matching module, and the like of the antenna device 100 may be disposed inside the housing 200.

In some embodiments, the housing 200 includes a metal bezel 210. The metal frame 210 may be made of metal or alloy such as aluminum alloy, magnesium alloy, etc. The metal bezel 210 may form a side bezel of the electronic device.

The first radiator 10 and the second radiator 20 may be disposed on the metal frame 210. In the case where the antenna device 100 further includes the third radiator 30, the third radiator 30 may be disposed on the metal frame 210. For example, a plurality of metal stubs may be formed on the metal bezel 210 by way of slits, the first radiator 10 and the second radiator 20 may be formed by the plurality of metal stubs, or the first radiator 10, the second radiator 20, and the third radiator 30 may be formed by the plurality of metal stubs.

Therefore, in the embodiment of the present application, the first radiator 10 and the second radiator 20 may be formed by the metal frame 210, or the first radiator 10, the second radiator 20 and the third radiator 30 may be formed by the metal frame 210, and the first radiator 10, the second radiator 20 and the third radiator 30 may not be separately provided, so that the design of the antenna may be simplified, and occupation of the internal layout space of the electronic device may be reduced.

In the description of the present application, it should be understood that terms such as "first," "second," and the like are used merely to distinguish between similar objects and should not be construed to indicate or imply relative importance or implying any particular order of magnitude of the technical features indicated.

It should be noted that, in the embodiments of the present application, the "electrical connection" may be a direct connection between two electrical components to implement electrical connection, or may be an indirect connection to implement electrical connection. For example, the electrical connection between a and B may be a direct connection between a and B, or an indirect connection between a and B via one or more other electrical components.

The antenna device and the electronic device provided in the embodiments of the present application are described in detail above. Specific examples are set forth herein to illustrate the principles and embodiments of the present application, with the description of the examples given above only to assist in understanding the present application. Meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.

Claims

1. An antenna device, comprising:

2. An antenna arrangement according to claim 1, characterized in that:

the first resonance forms a first resonance current between the first ground point and the first feed point, and the first resonance current is loop current.

3. An antenna arrangement according to claim 1, characterized in that:

the first feed point is close to the first gap, the first grounding point is far away from the first gap, the first ring die and the second ring die have a common current zero point on the first radiator, and the current zero point is close to the first feed point;

the first ring mode forms a second resonance current between the first grounding point and the current zero point, and forms a sixth resonance current between the current zero point and the first feed point, wherein the sixth resonance current is opposite to the second resonance current, and the second resonance current is the main resonance current of the first ring mode;

the second ring mode forms a fourth resonance current between the first grounding point and the current zero point, and forms a seventh resonance current between the current zero point and the first feed point, wherein the seventh resonance current is opposite to the fourth resonance current, and the fourth resonance current is the main resonance current of the second ring mode.

4. An antenna arrangement according to claim 3, characterized in that:

the first parasitic resonance mode forms a third resonance current on the second radiator, the third resonance current and the second resonance current are in the same direction, and the third resonance current and the second resonance current form an E-E radiation mode together;

the second parasitic resonant mode forms a fifth resonant current on the second radiator, the fifth resonant current being opposite the fourth resonant current, the fifth resonant current and the fourth resonant current together forming an E-E balanced mode.

5. The antenna device according to claim 4, wherein:

the second resonant current is a quarter-wavelength resonant current of the second WiFi communication frequency band, and the third resonant current is a half-wavelength resonant current of the second WiFi communication frequency band;

the fourth resonant current is a quarter-wavelength resonant current of the second frequency band of the WiFi communication, and the fifth resonant current is a half-wavelength resonant current of the second frequency band of the WiFi communication.

6. The antenna device according to any one of claims 1 to 5, further comprising:

a first matching module;

the first feed source is electrically connected with the first feed point through the first matching module and is used for providing the first excitation signal.

7. The antenna device according to any one of claims 1 to 5, characterized in that:

the first frequency band of WiFi communication is 2.4 GHz;

the second frequency band of WiFi communication is a 5GHz frequency band;

the center frequency of the third resonance is greater than that of the second resonance, and the second resonance and the third resonance together form a resonance bandwidth for supporting the second frequency band of WiFi communication.

8. The antenna device according to any one of claims 1 to 5, characterized in that:

the second radiator further comprises a second feed point which is arranged at intervals with the second grounding point and is used for feeding a second excitation signal;

the second excitation signal is used for exciting the second radiator to generate fourth resonance and fifth resonance, the fourth resonance is a ring mode, the fifth resonance is an IFA mode, and the fourth resonance and the fifth resonance both cover medium-high frequency communication.

9. The antenna device according to claim 8, characterized in that:

the fourth resonance forms an eighth resonance current between the second grounding point and the second feeding point, and the eighth resonance current is loop current;

the second radiator comprises a first free end far away from the first gap, the second feed point is located between the first free end and the second grounding point, and the fifth resonance forms a ninth resonance current between the second grounding point and the first free end.

10. The antenna device of claim 8, further comprising:

a second matching module;

the second feed source is electrically connected with the second feed point through the second matching module and is used for providing the second excitation signal.

11. The antenna device according to any one of claims 1 to 5, further comprising:

a third radiator having a second gap between the third radiator and the second radiator, the third radiator being coupled to the second radiator through the second gap;

the second radiator or the third radiator comprises a third feeding point, the third feeding point is used for feeding a third excitation signal, the third excitation signal is used for exciting the second radiator and the third radiator to jointly generate sixth resonance and seventh resonance, the sixth resonance is an E-E radiation mode, the seventh resonance is an E-E balanced mode, and the sixth resonance and the seventh resonance all cover medium-high frequency communication or all cover ultrahigh frequency communication.

12. The antenna device according to claim 11, characterized in that:

the sixth resonance forms a tenth resonance current at the second radiator and an eleventh resonance current at the third radiator, the tenth resonance current being in the same direction as the eleventh resonance current;

the seventh resonance forms a twelfth resonance current at the second radiator and a thirteenth resonance current at the third radiator, the twelfth resonance current being opposite to the thirteenth resonance current.

13. The antenna device according to claim 11, characterized in that:

the third feed point is arranged on the second radiator, the third feed point and the second grounding point are arranged at intervals, the third radiator comprises a third grounding point, and the third grounding point is grounded;

the third excitation signal is further used for exciting the second radiator to generate eighth resonance and ninth resonance, the eighth resonance is a ring mode, and the ninth resonance is an IFA mode;

and the eighth resonance and the ninth resonance cover medium-high frequency communication, and the sixth resonance and the seventh resonance cover ultrahigh frequency communication.

14. The antenna device according to claim 11, characterized in that:

the third feed point is arranged on the third radiator, the third radiator further comprises a third grounding point, the third grounding point is grounded, and the third grounding point and the third feed point are arranged at intervals;

the third excitation signal is further used for exciting the third radiator to generate tenth resonance between the third grounding point and the third feeding point, the tenth resonance is a ring mode, and the center frequency of the tenth resonance is smaller than the center frequency of the sixth resonance and the center frequency of the seventh resonance.

15. The antenna device according to claim 14, characterized in that:

the tenth resonance covers medium-high frequency communication, and the sixth resonance and the seventh resonance cover ultrahigh frequency communication; or alternatively

The tenth resonance covers a lower frequency band in the middle-high frequency communication, and the sixth resonance and the seventh resonance both cover a higher frequency band in the middle-high frequency communication.

16. The antenna device of claim 11, further comprising:

a third matching module;

and the third feed source is electrically connected with the third feed point through the third matching module and is used for providing the third excitation signal.

17. An electronic device, comprising:

a housing;

an antenna device provided to the housing, the antenna device being the antenna device according to any one of claims 1 to 16.