Antenna device and electronic equipment

Abstract

The invention provides an antenna device and electronic equipment, a first radiator and a second radiator of the antenna device are stacked with a floor and are arranged at intervals, a coupling gap is formed between the second radiator and the first radiator, and the second radiator comprises a split ring structure. The split ring structure is of an asymmetric structure relative to a first axis formed by the feeding point of the first radiator and the first center point. According to the antenna device, the signal source can excite the first radiator, the second radiator and the floor to jointly support receiving and transmitting of wireless signals in a circular polarization mode, the antenna device can have the excellent circular polarization performance, the antenna device can be more suitable for the use scene of satellite communication, and the radiation performance of the antenna device and satellite communication can be improved.

Description

Technical Field

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

[0002] With the development of communication technology, electronic devices such as smart phones can realize more and more functions, the communication modes of electronic devices are more diversified, and the polarization modes of antenna devices of electronic devices are becoming more and more abundant.

[0003] The antenna can communicate with the satellite in a circular polarization mode. In the related art, the antennas of electronic devices such as smart phones are often linearly polarized, making it difficult for the electronic devices to communicate with the satellite. Summary of the invention

[0004] The present application provides an antenna device and an electronic device. The antenna device can achieve circular polarization and is suitable for satellite communications.

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

[0006] floor;

[0007] A first radiator, stacked and spaced apart from the floor, the first radiator comprising a feeding point, the feeding point and a first center point of the first radiator forming a first axis;

[0008] a signal source, electrically connected to the feeding point;

[0009] a second radiator, stacked and spaced apart from the floor, and forming a coupling gap with the first radiator, the second radiator comprising a first end and a second end extending toward each other, the first end and the second end being spaced apart so that the second radiator is an open ring structure, and the open ring structure is an asymmetric structure relative to the first axis;

[0010] The signal source is used to excite the first radiator, the second radiator and the floor to support the transmission and reception of wireless signals in a circularly polarized manner.

[0011] In a second aspect, the present application also provides an electronic device, comprising the antenna device as described above.

[0012] The antenna device and electronic device of the present application, the second radiator of the antenna device includes an open ring structure, and the open ring structure is an asymmetric structure relative to the first axis formed by the feeding point of the first radiator and the first center point. When the signal source provides an excitation signal to the first radiator, the second radiator can be electromagnetically coupled with the first radiator, and the polarization direction generated by the resonant current on the second radiator is not easy to be symmetrical relative to the first axis, so that the resonant current on the second radiator can generate resonant current components in two directions perpendicular to each other. Therefore, the signal source can excite the first radiator, the second radiator and the floor to jointly support the transmission and reception of wireless signals in a circularly polarized manner. The antenna device can have better circular polarization performance, and the antenna device can be more suitable for use scenarios with satellite communications, and the radiation performance of the antenna device and satellite communications can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0014] Figure 1 A first structural schematic diagram of an antenna device provided in an embodiment of the present application.

[0015] Figure 2 for Figure 1 An electrical connection schematic diagram of the antenna device shown.

[0016] Figure 3 for Figure 1 A first current distribution schematic diagram of the antenna device is shown.

[0017] Figure 4 for Figure 1 A schematic diagram of a first circular polarization direction of the antenna device is shown.

[0018] Figure 5 for Figure 1 A schematic diagram of a first axial ratio simulation of the antenna device is shown.

[0019] Figure 6 for Figure 1 A schematic structural diagram of a second radiator of the antenna device is shown.

[0020] Figure 7 for Figure 1 A second current distribution diagram of the antenna device is shown.

[0021] Figure 8 for Figure 1 A schematic diagram of the second circular polarization direction of the antenna device is shown.

[0022] Fig. 9 for Figure 1 A schematic diagram of a second axial ratio simulation of the antenna device is shown.

[0023] Fig.10 A second structural schematic diagram of the antenna device provided in an embodiment of the present application.

[0024] Fig.11 A third structural schematic diagram of the antenna device provided in an embodiment of the present application.

[0025] Fig.12 A fourth structural schematic diagram of the antenna device provided in an embodiment of the present application.

[0026] Fig.13 A fifth structural schematic diagram of the antenna device provided in an embodiment of the present application.

[0027] Fig.14 A sixth structural schematic diagram of the antenna device provided in an embodiment of the present application.

[0028] Fig.15 A first structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0029] Fig.16 A second structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0030] Fig.17 A third structural schematic diagram of the electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the attached examples of the present application Figure 1 To Attachment Fig.17 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0032] The embodiment of the present application provides an antenna device and an electronic device, and the antenna device can realize wireless communication function. For example, the antenna device can transmit wireless fidelity (Wireless Fidelity, referred to as Wi-Fi) signals, global positioning system (Global Positioning System, referred to as GPS) signals, third-generation mobile communication technology (3rd-Generation, referred to as 3G), fourth-generation mobile communication technology (4th-Generation, referred to as 4G), fifth-generation mobile communication technology (5th-Generation, referred to as 5G), near field communication (Near field communication, referred to as NFC) signals, Bluetooth (Bluetooth, referred to as BT) signals, ultra-wideband communication (Ultra WideBand, referred to as UWB) signals, satellite signals, etc.

[0033] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a first structure of the antenna device 100 provided in an embodiment of the present application. Figure 2 for Figure 1 The antenna device 100 is a schematic diagram of electrical connection. The antenna device 100 includes a first radiator 110 , a second radiator 120 , a signal source 130 and a floor 140 .

[0034] The first radiator 110 is stacked and spaced apart from the floor 140, and the first radiator 110 may be disposed on one side of the floor 140 along a stacking direction (e.g., stacking direction H1 hereinafter). The first radiator 110 may include a feeding point 111, and the first radiator 110 may also have a first center point O1, and the feeding point 111 and the first center point O1 may form a first axis L1. The signal source 130 may be directly or indirectly electrically connected to the feeding point 111 so that the signal source 130 may provide an excitation signal to the first radiator 110. The second radiator 120 may be stacked and spaced apart from the floor 140, and the second radiator 120 may be spaced apart from the first radiator 110 and a coupling gap 101 may be formed therebetween, and the second radiator 120 may be electromagnetically coupled to the first radiator 110. The first end 121 of the second radiator 120 may extend in the direction of the second end 122 and be spaced apart from the second end 122, and the second end 122 of the second radiator 120 may extend in the direction of the first end and be spaced apart from the first end 121, so that the first end 121 and the second end 122 of the second radiator 120 may extend in the direction of each other and be spaced apart so that the second radiator 120 may form an open ring structure 102, and the second radiator 120 may be a radiation structure of the open ring structure 102. The open ring structure 102 of the second radiator 120 may be an asymmetric structure relative to the first axis L1 formed by the feeding point 111 of the first radiator 110 and the first center point O1 of the first radiator 110, and the open ring structure 102 may not be symmetrical about the first axis L1. Among them, the signal source 130 provides an excitation signal to the first radiator 110 so that the first radiator 110 is electromagnetically coupled with the second radiator 120. The signal source 130 can excite the first radiator 110, the second radiator 120 and the floor 140 to jointly support the transmission and reception of wireless signals in a circularly polarized manner (transmission and reception include signal transmission and reception, which will not be repeated below).

[0035] It can be understood that electromagnetic coupling connection, also known as capacitive coupling, means that when an electric field is generated between two radiators, the signal on one radiator can be transmitted to the other radiator through the electric field, so that the two radiators can achieve electrical signal conduction even when they are not in direct contact or direct connection.

[0036] It can be understood that the floor 140 can form a common ground of the antenna device 100 or the electronic device. The floor 140 can be a plane or structure with zero electric potential. Among them, the floor 140 can be a component of the antenna device 100 or other devices such as electronic devices. For example, the floor 140 can be formed by a conductor, a printed circuit or a metal printed layer in the antenna device 100 or the electronic device; the floor 140 can be formed on the main board, a small board or other supporting board of the antenna device 100 or the electronic device; or, the floor 140 can also be formed on the frame of the antenna device 100 or the electronic device. The embodiment of the present application does not limit the specific setting position of the floor 140. Among them, the second radiator 120 may not be electrically connected to the floor 140 and be suspended relative to the floor 140; the first radiator 110 may be electrically connected to the floor 140 so that the first radiator 110 can be grounded. Of course, the first radiator 110 may not be electrically connected to the floor 140 so that the first radiator 110 can be suspended relative to the floor 140. The embodiment of the present application does not limit this.

[0037] It is understandable that both the first radiator 110 and the second radiator 120 can be radiating devices with conductor structures. For example, but not limited to, the first radiator 110 and the second radiator 120 are radiating devices with metal structures. In order to facilitate the electromagnetic coupling connection between the first radiator 110 and the second radiator 120, the first radiator 110 can be, but not limited to, a rectangular structure, a circular structure, or other structures with a small distance between the length and width directions (can be any two perpendicular directions). Correspondingly, the second radiator 120 can be, but not limited to, an open ring structure 102 formed by an open circular ring structure, an open rectangular ring structure, etc. The embodiment of the present application does not limit the specific structure of the first radiator 110 and the second radiator 120.

[0038] It can be understood that the first center point O1 of the first radiator 110 can be the position at the center of the first radiator 110. When the first radiator 110 is a symmetrical structure, the first center point O1 can be the midpoint of the symmetry axis of the first radiator 110; when the first radiator 110 is an asymmetrical structure, the first center point O1 can be the center of gravity of the first radiator 110, and the first center point O1 can make the first radiator 110 in a balanced state. It should be noted that the first center point O1 can be located on the first radiator 110, and the first center point O1 can also be located outside the first radiator 110 (for example, when the first radiator 110 is a circular ring structure, its first center point O1 can also be located outside the first radiator 110), and the embodiment of the present application does not limit the specific position of the first center point O1. The first axis L1 is a straight line passing through the first center point O1 and the feeding point 111 . When the signal source 130 feeds an excitation signal to the first radiator 110 through the feeding point 111 , the first radiator 110 can generate a polarized radiation direction along the extension direction of the first axis L1 .

[0039] It can be understood that the signal source 130 can convert high-frequency excitation current or bound electromagnetic waves into radiated electromagnetic energy. For example, the signal source 130 can provide an excitation current to the first radiator 110, and the excitation current can excite the first radiator 110, the second radiator 120 and the floor 140 to jointly support wireless signal transmission; at the same time, the first radiator 110 and the second radiator 120 can also capture and bind electromagnetic waves in the free space and transmit them to the signal source 130 to form a current signal, so that the first radiator 110, the second radiator 120 and the floor 140 can support the reception of wireless signals.

[0040] It is understandable that when the signal source 130 provides an excitation signal to the first radiator 110, the polarization direction generated by the resonant current generated by the excitation signal to excite the first radiator 110 may be substantially along the direction of the first axis L1 from the feeding point 111 of the first radiator 110 to the first center point O1 of the first radiator 110. Figure 3 , Figure 3 for Figure 1 The first current distribution diagram of the antenna device 100 is shown. The resonant current generated by the excitation of the signal source 130 can be electromagnetically coupled to the second radiator 120 through the coupling gap 101 between the first radiator 110 and the second radiator 120. The resonant current can flow along the open ring structure 102 of the second radiator 120 on the second radiator 120. Since the second open ring structure 102 is an asymmetric structure relative to the first axis L1 from the feeding point 111 of the first radiator 110 to the first center point O1, under the effect of the coupling feeding of the first radiator 110, the polarization direction generated by the second open ring structure 102 is not easy to be offset along the direction of the first axis L1. 2 is not likely to be in the same direction as the polarization direction of the first radiator 110, so that the resonant current flowing on the second radiator 120 can generate a resonant current component flowing along the first direction and a resonant current component flowing along the second direction, and the first direction can be perpendicular to the second direction. For example, the resonant current flowing on the second radiator 120 can generate a resonant current component in the horizontal direction and a resonant current component in the vertical direction. Therefore, under the action of the resonant current, the signal source 130 can excite the first radiator 110, the second radiator 120 and the floor 140 to jointly support the transmission and reception of wireless signals in a circularly polarized manner. For example, please combine Figure 3 Please also refer to Figure 4 and Figure 5 , Figure 4 for Figure 1 The schematic diagram of the first circular polarization direction of the antenna device 100 is shown in FIG. Figure 5 for Figure 1The first axial ratio simulation schematic diagram of the antenna device 100 is shown. Figure 4 for Figure 3 The circular polarization pattern generated by the resonant current excitation antenna device 100 is shown in FIG. Figure 5 for Figure 3 The axial ratio simulation diagram of the resonant current excitation antenna device 100 when supporting wireless signals is shown. Figure 4 and Figure 5 As shown, under the excitation of the signal source 130, the axial ratio of the main radiation beams of the first radiator 110, the second radiator 120 and the floor 140 is low, and the first radiator 110, the second radiator 120 and the floor 140 can support the transmission and reception of wireless signals in a circularly polarized manner. At the same time, the main radiation beams of the first radiator 110, the second radiator 120 and the floor 140 are radiated from the floor 140 toward a direction away from the floor 140. The antenna device 100 has good directional radiation performance and high gain radiation performance. The antenna device 100 of the embodiment of the present application can have better circular polarization performance.

[0041] It can be understood that the axial ratio of an antenna refers to the ratio of the major axis to the minor axis of an ellipse that the endpoint of the electric field vector periodically draws in space under circular polarization. The axial ratio is an important performance indicator of a circularly polarized antenna. It represents the purity of circular polarization and is an important indicator for measuring the difference in signal gain of the entire device in different directions. The closer the circular polarization axial ratio of an antenna is to 1 (the endpoint of the electric field vector periodically draws a circle in space), the better its circular polarization performance.

[0042] It can be understood that the circular polarization of the antenna is a type of polarization of the antenna. The polarization of the antenna includes linear polarization, elliptical polarization and circular polarization. The polarization of the antenna is the polarization of the electromagnetic wave of the antenna in the direction of maximum gain. The polarization of the electromagnetic wave is the change of the electric field trajectory at a certain position over time. The electric field trajectory may be a straight line, a circle or an ellipse, so that the antenna can be linearly polarized, circularly polarized or elliptically polarized. Among them, the linear polarization of the antenna refers to the polarization of the electromagnetic wave with a fixed orientation of the electric field vector in space. When the ground is used as a reference, the direction of the electric field vector parallel to the ground is horizontal polarization, and the direction perpendicular to the ground is vertical polarization. Elliptical polarization refers to the angle between the polarization plane of the electromagnetic wave and the normal plane of the earth that changes periodically from 0 to 360 degrees, and the trajectory of the end of the electric field vector is projected as an ellipse on a plane perpendicular to the propagation direction. It is called elliptical polarization. Circular polarization refers to the characteristic that the magnitude of the electric field remains unchanged, the direction of the electric field changes with time, and the projection of the trajectory of the end of the electric field vector on the plane perpendicular to the propagation direction is a circle; circular polarization can be achieved when the horizontal component and the vertical component of the electric field have equal amplitudes and a phase difference of ninety degrees or two hundred and seventy degrees; and if the polarization plane rotates with time and is in a right-handed spiral relationship with the propagation direction of the electromagnetic wave, it is called right-handed circular polarization; conversely, if it is a left-handed spiral relationship, it is called left-handed circular polarization. When the first radiator 110, the second radiator 120 and the floor 140 jointly support the transmission and reception of wireless signals in a circularly polarized manner, the circularly polarized transmission and reception method can overcome the multipath effect and improve the accuracy of communication, especially can improve the communication performance between the first radiator 110, the second radiator 120 and the floor 140 and the communication satellite; it can also eliminate polarization distortion and improve the anti-interference performance of the antenna device 100.

[0043] It should be noted that there is a difference between the polarization mode, polarization direction and radiation direction of an antenna. The radiation direction of an antenna is the direction in which the main beam of the antenna is directed. Figure 4As shown, in the embodiment of the present application, when the first radiator 110, the second radiator 120 and the floor 140 jointly support the wireless signal, the main beam is from the floor 140 to the direction where the reference plane M0 is located (for example, toward the direction where the display surface is located), wherein another main beam is from the floor 140 to the direction of the reference plane M0 (for example, toward the direction of the back shell 600). The polarization mode and polarization direction of the antenna affect the form in which the main beam of the antenna propagates in space. Generally, when the main beam is linearly polarized, the linearly polarized electromagnetic wave can be received by another antenna that supports linear polarization; when the main beam is circularly polarized, the circularly polarized electromagnetic wave can be received by another antenna that supports circular polarization. Therefore, when the polarization forms supported by the two antennas are the same, the two antennas are more likely to achieve better transmission performance. Furthermore, the polarization direction is the direction of the polarization form of the antenna. Linear polarization can have polarization directions such as ±45° linear polarization direction, horizontal polarization direction, and vertical polarization direction; circular polarization can have left-hand circular polarization direction and right-hand circular polarization direction. Generally speaking, when the polarization directions of the two antennas are the same, the two antennas are more likely to achieve better transmission performance. If the polarization directions of the two antennas are perpendicular to each other, the two antennas basically cannot achieve signal transmission. For example, when the satellite antenna transmits a signal in a left-hand circular polarization direction, the antenna device 100 of the present application preferably also receives the signal in a left-hand circular polarization direction. If the antenna device 100 of the present application receives the signal in a right-hand circular polarization direction, it basically cannot receive the signal transmitted by the satellite antenna.

[0044] It should be noted that in the related art, in the field of electronic devices such as smart phones, tablet computers, desktop computers and other devices, the antennas installed on the electronic devices are often linearly polarized antennas, while satellites often transmit and receive signals in the form of circular polarization, which makes the linearly polarized antennas on the electronic devices in the related art unable to receive circularly polarized satellite signals well. However, the antenna device 100 of the present application can transmit and receive signals in a circularly polarized manner, and the antenna device 100 of the present application can communicate better with the satellite antenna; in addition, when the first radiator 110, the second radiator 120 and the floor 140 of the embodiment of the present application jointly support the wireless signal, the main beam direction is a fixed direction perpendicular to the floor 140, and the beam of the antenna device 100 of the present application has the characteristics of directional high gain, so the antenna device 100 of the present application is very suitable for satellite communication.

[0045] It can be understood that the first end 121 and the second end 122 of the second radiator 120 of the embodiment of the present application are spaced apart from each other to form an open area 123 so that the second radiator 120 is an open ring structure 102. The open ring structure 102 is different from a closed ring structure, and the closed ring structure refers to a ring structure in which the two ends are connected to form an integral structure. If the second radiator 120 of the present application is a closed ring structure, after the second radiator 120 is electromagnetically coupled with the first radiator 110, it is difficult for the resonant current to excite a resonant current path with different flow directions on the closed ring structure, so that the second radiator 120 is not easy to support the transmission and reception of wireless signals with the first radiator 110 and the floor 140 in a circularly polarized manner. When the second radiator 120 of the present application is an open ring structure 102, the resonant current electromagnetically coupled to the second radiator 120 can form a resonant current path with different flow directions on the open ring structure 102, so that the second radiator 120 can support the transmission and reception of wireless signals with the first radiator 110 and the floor 140 in a circularly polarized manner.

[0046] It is understandable that the arc of the open ring structure 102 of the second radiator 120 can be greater than or equal to 181 degrees and less than or equal to 359 degrees, so that the open ring structure 102 can form an open ring structure 102 larger than a semicircle. For example, please refer to Figure 6 , Figure 6 for Figure 1 A schematic diagram of the structure of the second radiator 120 of the antenna device 100 is shown, the open ring structure 102 of the second radiator 120 may have a second center point O2, the first end 121 of the second radiator 120 and the second center point O2 may form a first line segment L2, the second end 122 of the second radiator 120 and the second midline point O2 may form a second line segment L3, the angle α formed by the first line segment L2, the second line segment L3 and the second center point O2 may be greater than or equal to 1 degree and less than or equal to 179 degrees, so that the angle β which is a circular angle with the angle α may be greater than or equal to 181 degrees and less than or equal to 359 degrees, so that the open ring structure 102 may form an open ring structure 102 larger than a semicircle. At this time, the open ring structure 102 of the second radiator 120 is more likely to form circularly polarized radiation.

[0047] It can be understood that, in order to further enable the resonant current generated by the excitation of the signal source 130 to generate a resonant current component flowing along the first direction and a resonant current component flowing along the second direction on the open ring structure 102 of the second radiator 120, the open area 123 of the open ring structure 102 of the second radiator 120 can be staggered with the first axis L1. In other words, the open area 123 between the first end 121 and the second end 122 of the second radiator 120 does not intersect with the first axis L1, and the open area 123 between the first end 121 and the second end 122 can be spaced from the first axis L1. At this time, the open ring structure 102 of the second radiator 120 is less likely to be symmetrical about the first axis L1, and the open ring structure 102 is more likely to be an asymmetric structure relative to the first axis L1.

[0048] It can be understood that the second radiator 120 itself can be a symmetrical structure or an asymmetrical structure; when the second radiator 120 itself is an asymmetrical structure, the asymmetrical second radiator 120 is less likely to be symmetrical relative to the first axis L1, and the asymmetrical second radiator 120 is more likely to generate circularly polarized radiation under the stimulation of the signal source 130. Moreover, when the second radiator 120 is an asymmetrical structure, the opening area 123 of the asymmetrical open ring structure 102 of the second radiator 120 may not be staggered with the first axis L1, and the signal source 130 can still stimulate the second radiator 120 to generate circularly polarized radiation; of course, the opening area 123 of the asymmetrical open ring structure 102 is staggered with the first axis L1, and the circular polarization performance generated by the second radiator 120 can be further improved. The embodiment of the present application does not limit the specific structure of the second radiator 120.

[0049] In the antenna device 100 of the embodiment of the present application, the second radiator 120 includes an open ring structure 102, and the open ring structure 102 is an asymmetric structure relative to the first axis L1 formed by the feeding point 111 of the first radiator 110 and the first center point O1. When the signal source 130 provides an excitation signal to the first radiator 110, the second radiator 120 can be electromagnetically coupled with the first radiator 110, and the polarization direction generated by the resonant current on the second radiator 120 is not easy to be symmetrical relative to the first axis L1, so that the resonant current on the second radiator 120 can generate resonant current components in two directions perpendicular to each other. Therefore, the signal source 130 can excite the first radiator 110, the second radiator 120 and the floor 140 to jointly support the transmission and reception of wireless signals in a circularly polarized manner. The antenna device 100 can have better circular polarization performance, and the antenna device 100 can be more suitable for use scenarios with satellite communications, and can improve the radiation performance of the antenna device 100 with satellite communications. The antenna device 100 of the embodiment of the present application can be a high-gain circularly polarized mobile phone satellite antenna.

[0050] When the second radiator 120 includes an open ring structure 102, the signal source 130 can excite the first radiator 110, the second radiator 120 and the floor 140 to jointly support the transmission and reception of wireless signals in the first frequency band in a circularly polarized manner, and jointly support the transmission and reception of wireless signals in the second frequency band in a circularly polarized manner.

[0051] It can be understood that the signal source 130 can stimulate the electromagnetic coupling between the first radiator 110 and the second radiator 120, and the signal source 130 can stimulate the second radiator 120 to generate a resonant current. Under the excitation of the resonant current, the second radiator 120 can generate multiple-mode resonant modes of the fundamental mode so that the first radiator 110, the second radiator 120 and the floor 140 can support the transmission and reception of wireless signals in multiple frequency bands.

[0052] For example, please combine Figure 1 , Figure 2 And refer to Figures 3 to 5 Under the action of the signal source 130, the first radiator 110 and the floor 140, the second radiator 120 can be stimulated to generate a first resonance mode. Under the action of the first resonance mode, the first radiator 110, the second radiator 120 and the floor 140 can jointly support the transmission and reception of wireless signals in the first frequency band in a circularly polarized manner.

[0053] It can be understood that the first resonant mode can be that the second radiator 120 can generate a secondary mode resonant mode of the fundamental mode resonant mode under the excitation of the first resonant current I1, and the first resonant current I1 generated by the first resonant mode can form a first current distribution path I11 and a second current distribution path I12 on the second radiator 120, and the first current distribution path I11 and the second current distribution path I12 can be two arc-shaped half-wavelength current distribution paths. Among them, the first resonant current I1 generated by the first resonant mode has the smallest current in the opening area 123 and the middle position of the open ring structure 102, and the current is the largest at the position of one quarter of the wavelength corresponding to the wireless signal supported by the first resonant mode, so that the first current distribution path I11 can flow from the first end 121 toward the direction away from the first end 121 (for example, the middle position of the open ring structure 102), and the second current distribution path I12 flows from the second end 122 toward the direction away from the second end 122 (for example, the middle position of the open ring structure 102). Therefore, the first current distribution path I11 and the second current distribution path I12 have different flow directions, one of which can flow in the counterclockwise direction, and the other can flow in the clockwise direction. The equivalent electrical length of the open ring structure 102 of the entire second radiator 120 can be about one wavelength of the first frequency band supported by the first resonance. Figure 3As shown, under the action of the first current distribution path I11 and the second current distribution path I12, the resonant current on the open ring structure 102 of the second radiator 120 may have a resonant current component along the first direction (for example, a resonant current component along the vertical direction) and a resonant current component along the second direction (for example, a resonant current component along the horizontal direction), so that, as shown in FIG. Figure 4 and Figure 5 As shown, under the action of the first resonance mode, the signal source 130 can excite the first radiator 110, the second radiator 120 and the floor 140 to jointly support the transmission and reception of wireless signals in the first frequency band in a circularly polarized manner.

[0054] For example, please combine Figure 1 And refer to Figures 7 to 9 , Figure 7 for Figure 1 The second current distribution diagram of the antenna device 100 is shown in FIG. Figure 8 for Figure 1 The schematic diagram of the second circular polarization direction of the antenna device 100 is shown in FIG. Fig. 9 for Figure 1 The second axial ratio simulation schematic diagram of the antenna device 100 is shown. Under the action of the signal source 130, the first radiator 110 and the floor 140, the second radiator 120 can be excited to generate a second resonance mode, and under the action of the second resonance mode, the first radiator 110, the second radiator 120 and the floor 140 can jointly support the transmission and reception of wireless signals in the second frequency band in a circularly polarized manner.

[0055] It can be understood that the second resonant mode can be a third-mode resonant mode of the fundamental mode generated by the second radiator 120 under the excitation of the second resonant current I2, and the second resonant current I2 generated by the second resonant mode can form a third current distribution path I21, a fourth current distribution path I22 and a fifth current distribution path I23 on the second radiator 120, and the third current distribution path I21, the fourth current distribution path I22 and the fifth current distribution path I23 can be three arc-shaped half-wavelength current distribution paths. Among them, the third current distribution path I21 can be formed at the first end 121 of the open ring structure 102 of the second radiator 120, the fifth current distribution path I23 can be formed at the second end 122 of the open ring structure 102, and the fourth current distribution path I22 can be formed in the middle position of the open ring structure 102, so that the third current distribution path I21 can flow from the first end 121 toward a direction away from the first end 121 (for example, the middle position of the open ring structure 102), and the fourth current distribution path I22 can flow from one end thereof (the end close to the fifth current distribution path I23) in a direction toward the first end 121, and the flow directions of the fourth current distribution path I22 and the third current distribution path I21 are opposite, for example, one of the current distribution paths can flow in a counterclockwise direction, and the other current distribution path can flow in a clockwise direction. The fifth current distribution path I23 flows from one end thereof (the end close to the fourth current distribution) toward the second end 122. The fifth current distribution path I23 may have the same flow direction as the third current distribution path I21, for example, both flow in a counterclockwise direction. The equivalent electrical length of the open ring structure 102 of the entire second radiator 120 may be about 1.5 wavelengths of the first frequency band supported by the second resonance. Figure 7 As shown, under the action of the third current distribution path I21, the fourth current distribution path I22, and the fifth current distribution path I23, the resonant current on the open ring structure 102 of the second radiator 120 may have a resonant current component along the first direction (for example, a resonant current component in the vertical direction) and a resonant current component along the second direction (for example, a resonant current component in the horizontal direction, wherein the oblique upper current distribution of the fourth current distribution path I22 can be decomposed into resonant current components in the first direction and the second direction), so that, as shown in FIG. Figure 8 and Fig. 9 As shown, Figure 8 for Figure 7 The circular polarization pattern generated by the resonant current excitation antenna device 100 is shown in FIG. Fig. 9 for Figure 7The schematic diagram of the axial ratio simulation when the resonant current excitation antenna device 100 supports the second frequency band wireless signal is shown. Under the action of the second resonant mode, the signal source 130 can excite the first radiator 110, the second radiator 120 and the floor 140 to have a lower axial ratio of the main radiation wavelength. The first radiator 110, the second radiator 120 and the floor 140 can jointly support the transmission and reception of the wireless signal of the second frequency band in a circularly polarized manner. At the same time, the main radiation beams of the first radiator 110, the second radiator 120 and the floor 140 are radiated from the floor 140 toward the direction away from the floor 140. The antenna device 100 has good directional radiation performance and high gain radiation performance. The antenna device 100 of the embodiment of the present application can have better circular polarization performance.

[0056] Understandably, please refer again Figure 3 , Figure 4 , Figure 7 and Figure 8 , the first resonant current I1 of the secondary mode resonant mode generated by the first resonant mode on the second radiator 120 can enable the first radiator 110, the second radiator 120 and the floor 140 to support the reception and transmission of wireless signals of the first frequency band in a first circular polarization manner relative to the reference plane M0; the second resonant current I2 of the third mode resonant mode generated by the second resonant mode on the second radiator 120 can enable the first radiator 110, the second radiator 120 and the floor 140 to support the reception and transmission of wireless signals of the second frequency band in a second circular polarization manner relative to the reference plane M0. Wherein, relative to the reference plane M0, one of the first circular polarization and the second circular polarization is left-hand circular polarization, and the other is right-hand circular polarization. For example, as Figure 4 As shown, when the back shell 600 of the electronic device 10 or the back of the display device is taken as the reference plane M0, the first resonance mode can enable the first radiator 110, the second radiator 120 and the floor 140 to support the transmission and reception of wireless signals in the first frequency band in a right-hand circular polarization manner relative to the reference plane M0; Figure 8 As shown, the second resonance mode enables the first radiator 110, the second radiator 120 and the floor 140 to support the reception and transmission of wireless signals in the first frequency band in a left-handed circularly polarized manner relative to the reference plane M0. Thus, the antenna device 100 of the embodiment of the present application can realize dual-frequency dual circularly polarized reception and transmission of signals.

[0057] It can be understood that left-hand circular polarization and right-hand circular polarization are in a relative relationship. When the selected reference plane M0 is different, the same circularly polarized radiation beam can be circularly polarized with different rotation directions under different reference planes M0. For example, if a circularly polarized beam facing a certain reference plane M0 is defined as a left-hand circularly polarized beam, then the circularly polarized beam facing away from the reference plane M0 is a right-hand circularly polarized beam. Conversely, if another reference plane M0 opposite to the reference plane M0 is used as a new reference plane M0, then the circularly polarized beam facing the new reference plane M0 is a right-hand circularly polarized beam, and the circularly polarized beam facing away from the new reference plane M0 is a left-hand circularly polarized beam. The first circular polarization and the second circular polarization of the embodiments of the present application are not specifically limited to left-hand and right-hand.

[0058] It can be understood that when one of the first resonant mode and the second resonant mode of the antenna device 100 of the embodiment of the present application can excite the left-hand circular polarization radiation direction and the other resonant mode can excite the right-hand circular polarization radiation direction, the antenna device 100 can select a suitable resonant mode to communicate with the satellite according to the circular polarization rotation direction of the satellite to communicate with. For example, when the satellite is in a left-hand circular polarization mode, the antenna device 100 of the embodiment of the present application can select a wireless signal of the second frequency band supported by the second resonant mode to communicate with the satellite in a circular polarization manner; at this time, the antenna device 100 can filter out the first resonant mode through a matching circuit, a filtering circuit, etc., or the antenna device 100 directly ignores the first resonant mode. For another example, when the satellite is in a right-hand circular polarization mode, the antenna device 100 of the embodiment of the present application can select a wireless signal of the first frequency band supported by the first resonant mode to communicate with the satellite in a circular polarization manner; at this time, the antenna device 100 can filter out the second resonant mode through a matching circuit, a filtering circuit, etc., or the antenna device 100 directly ignores the second resonant mode. For another example, in actual applications, the same satellite often transmits and receives wireless signals in circular polarization modes with different rotation directions. If the satellite transmits signals in a left-hand circular polarization mode and receives signals in a right-hand circular polarization mode, the antenna device 100 of the embodiment of the present application can transmit signals to the satellite in a wireless signal of a first frequency band supported by a first resonance mode, and receive signals transmitted by the satellite in a wireless signal of a second frequency band supported by a second resonance mode. If the satellite transmits signals in a right-hand circular polarization mode and receives signals in a left-hand circular polarization mode, the antenna device 100 of the embodiment of the present application can transmit signals to the satellite in a wireless signal of a second frequency band supported by a second resonance mode, and receive signals transmitted by the satellite in a wireless signal of a first frequency band supported by a first resonance mode. The embodiment of the present application does not limit the specific circular polarization mode of the antenna device 100.

[0059] The antenna device 100 of the embodiment of the present application has a second radiator 120 with an open ring structure 102, which can generate multiple-mode resonance modes of the fundamental mode resonance mode under the excitation of the resonance current so that the first radiator 110, the second radiator 120 and the floor 140 can support the transmission and reception of wireless signals in multiple frequency bands, and the antenna device 100 can realize multi-band circularly polarized radiation; and when the second radiator 120 supports the first frequency band and the second frequency band respectively with the secondary mode resonance mode and the tertiary mode resonance mode, the circular polarization mode of the first resonance mode and the circular polarization mode of the second resonance mode can be circular polarization modes of different rotation directions, and the antenna device 100 can be a dual-band dual circularly polarized antenna structure. The antenna device 100 of the embodiment of the present application can not only realize a miniaturized design, but also have better circular polarization performance.

[0060] It should be noted that, as the modes of the first resonant mode and the second resonant mode are different, the relative relationship between the circular polarization mode of the wireless signal supported by the first resonant mode and the circular polarization mode of the wireless signal supported by the second resonant mode may also be different. For example, but not limited to, when the open ring structure 102 of the second radiator 120 generates a second mode resonance and a fourth mode resonance of the fundamental mode resonance mode under the excitation of the resonant current, at this time, the circular polarization modes of the two resonances supported by the antenna device 100 may be the same. The embodiments of the present application do not limit the specific circular polarization modes of the first resonant mode and the second resonant mode.

[0061] It should be noted that in addition to forming two resonant modes, the antenna device 100 of the embodiment of the present application can also form more resonant modes. For example, but not limited to, the second radiator 120 with an open ring structure 102 can generate three, fourth or even more multiple mode resonant modes of the fundamental mode under the excitation of the resonant current. The embodiment of the present application does not limit the specific resonant modes supported by the antenna device 100.

[0062] Among them, under the action of the signal source 130, the first radiator 110 and the floor 140, when the second radiator 120 is excited to generate the first resonance mode and the second resonance mode, the equivalent electrical length of the second radiator 120 can range from 0.8 times to 1.2 times the wavelength corresponding to the wireless signal of the first frequency band supported by the first resonance mode, and from 1.2 times to 1.8 times the wavelength corresponding to the wireless signal of the second frequency band supported by the second resonance mode, so that the second radiator 120 can more easily excite the first resonance mode of the secondary mode resonance mode and the second resonance mode of the third mode resonance mode.

[0063] For example, the equivalent electrical length L0 of the second radiator 120 may be between 0.8λ1 and 1.2λ1 (λ1 is the equivalent wavelength of the wireless signal in the first frequency band, which may be the equivalent wavelength of the wireless signal corresponding to the center frequency of the first frequency band) (L0 may be equal to 0.8λ1 or 1.2λ1), and the equivalent electrical length L0 of the second radiator 120 may also be between 1.2λ2 and 1.8λ2 (λ2 is the equivalent wavelength of the wireless signal in the second frequency band, which may be the equivalent wavelength of the wireless signal corresponding to the center frequency of the second frequency band) (L0 may be equal to 1.2λ2 or 1.8λ2). At this time, the frequency of the wireless signal in the second frequency band supported by the second resonance mode is approximately 1.5 times the frequency of the wireless signal in the first frequency band supported by the first resonance mode, which is consistent with the modal analysis of the first resonance mode and the second resonance mode.

[0064] It can be understood that the equivalent electrical length of the second radiator 120 refers to the equivalent length when the second radiator 120 radiates a signal, or the equivalent length required for electromagnetic wave transmission in the second radiator 120. The equivalent electrical length of the second radiator 120 can be greater than, less than, or equal to the physical length of its branches. The equivalent electrical length of the second radiator 120 can be associated with the frequency supported by the second radiator 120. When the equivalent electrical length of the second radiator 120 is longer, the second radiator 120 can support wireless signals with lower frequencies; when the equivalent electrical length of the second radiator 120 is shorter, the second radiator 120 can support wireless signals with higher frequencies. The second radiator 120 can change its equivalent electrical length by electrically connecting circuits with different impedances.

[0065] Understandably, please refer to Fig.10 , Fig.10 The second structural diagram of the antenna device 100 provided in the embodiment of the present application. The antenna device 100 of the present application may further include at least one of a first impedance circuit 150 and a second impedance circuit 160 .

[0066] The first impedance circuit 150 and the second impedance circuit 160 may be circuit structures including impedance elements, and the first impedance circuit 150 and the second impedance circuit 160 may adjust the equivalent electrical length of the second radiator 120. The first impedance circuit 150 may be directly or indirectly electrically connected to the first end 121 of the open ring structure 102 of the second radiator 120, and the second impedance circuit 160 may be directly or indirectly electrically connected to the second end 122 of the open ring structure 102 of the second radiator 120.

[0067] It can be understood that when the open ring structure 102 of the second radiator 120 excites the first resonance mode of the secondary mode resonance mode and the second resonance mode of the third mode resonance mode, the first current distribution path I11 of the first resonance mode and the third current distribution path I21 of the second resonance mode are both formed near the first end 121. When the first impedance circuit 150 is electrically connected to the first end 121, the first impedance circuit 150 is more likely to change the current distribution of the first resonance mode and the second resonance mode, thereby affecting the frequency band range of the wireless signal supported by the first resonance mode and the second resonance mode. Similarly, the second current distribution path I12 of the first resonance mode and the fifth current distribution path I23 of the second resonance mode are both formed near the second end 122. When the second impedance circuit 160 is electrically connected to the second end 122, the second impedance circuit 160 is more likely to change the current distribution of the first resonance mode and the second resonance mode, thereby affecting the frequency band range of the wireless signal supported by the first resonance mode and the second resonance mode.

[0068] It is understandable that the antenna device 100 may be provided with a first impedance circuit 150 without providing a second impedance circuit 160, or the antenna device 100 may be provided with a second impedance circuit 160 without providing a first impedance circuit 150, or the antenna device 100 may be provided with both a first impedance circuit 150 and a second impedance circuit 160, which is not limited in the embodiments of the present application.

[0069] It is understandable that the first impedance circuit 150 and the second impedance circuit 160 may include, but are not limited to, a structure formed by one or more inductors, capacitors, and switch elements connected in series or in parallel. Any structure that can change the equivalent electrical length of the second radiator 120 may be the structure of the first impedance circuit 150 and the second impedance circuit 160 of the present application, and the embodiments of the present application are not limited thereto.

[0070] The antenna device 100 of the embodiment of the present application is provided with a first impedance circuit 150 and a second impedance circuit 160. Under the action of the two impedance elements, the second radiator 120 can more easily form multiple resonance modes and support wireless signals of more frequency bands, and the antenna device 100 can further realize a miniaturized design.

[0071] In order to further improve the circular polarization performance of the antenna device 100, the stacking spacing between the first radiator 110 and the floor 140 along the stacking direction H1 may be greater than 0.02 times the wavelength of the wireless signal corresponding to the intermediate frequency of the first frequency band and the second frequency band. For example, the stacking spacing D1 between the first radiator 110 and the floor 140 may be greater than 0.02λ3, where λ3 is the equivalent wavelength of the wireless signal corresponding to the intermediate frequency of the first frequency band and the second frequency band. At this time, there is a certain distance between the first radiator 110 and the floor 140. Under the action of the floor 140, the first radiator 110, the second radiator 120 and the floor 140 are more likely to excite a circularly polarized radiation beam.

[0072] It can be understood that the stacking spacing between the second radiator 120 and the floor 140 along the stacking direction H1 can also be greater than 0.02 times the wavelength of the wireless signal corresponding to the intermediate frequency of the first frequency band and the second frequency band, so that there can also be a certain height spacing between the second radiator 120 and the floor 140. Under the action of the floor 140, the first radiator 110, the second radiator 120 and the floor 140 are more likely to excite circularly polarized radiation beams.

[0073] In order to further improve the electromagnetic coupling effect between the second radiator 120 and the first radiator 110, the size of the coupling gap 101 between the first radiator 110 and the second radiator 120 may be between 0.02 and 0.05 times the wavelength of the wireless signal corresponding to the intermediate frequency of the first frequency band and the second frequency band. For example, the size D2 of the coupling gap 101 between the first radiator 110 and the second radiator 120 may be greater than or equal to 0.02λ3 and less than or equal to 0.05λ3, wherein λ3 is the equivalent wavelength of the wireless signal corresponding to the intermediate frequency of the first frequency band and the second frequency band. At this time, the distance between the first radiator 110 and the second radiator 120 is moderate, and the excitation current provided by the signal source 130 is more easily electromagnetically coupled to the second radiator 120.

[0074] It is understandable that the size of the coupling gap 101 between the first radiator 110 and the second radiator 120 varies with the relative position relationship between the first radiator 110 and the second radiator 120. Figure 1The first radiator 110 and the second radiator 120 can be arranged in the same layer. For example, the first radiator 110 and the second radiator 120 can be arranged on the same carrier. There is no height difference between the first radiator 110 and the second radiator 120 in the stacking direction H1. At this time, the size of the coupling gap 101 between the first radiator 110 and the second radiator 120 can be the minimum spacing size between the first radiator 110 and the second radiator 120. The size of the coupling gap 101 can be the spacing between the area on the first radiator 110 closest to the second radiator 120 and the area on the second radiator 120 closest to the first radiator 110. The size of the coupling gap 101 can be between 0.02 times and 0.05 times the wavelength corresponding to the intermediate frequency of the first frequency band and the second frequency band.

[0075] For another example, see Fig.11 , Fig.11 The third structural schematic diagram of the antenna device 100 provided in the embodiment of the present application. The second radiator 120 of the embodiment of the present application can be stacked with the first radiator 110 along the stacking direction H1. At this time, the floor 140, the first radiator 110 and the second radiator 120 can be arranged along the stacking direction H1, and the second radiator 120 can be arranged between the floor 140 and the first radiator 110 along the stacking direction H1, so that the floor 140, the second radiator 120 and the first radiator 110 are stacked in sequence. The second radiator 120 can also be arranged on the side of the first radiator 110 away from the floor 140 along the stacking direction H1, so that the floor 140, the first radiator 110 and the second radiator 120 are stacked in sequence. At this time, the size of the coupling gap 101 between the first radiator 110 and the second radiator 120 can be the minimum spacing size between the first radiator 110 and the second radiator 120 along the stacking direction H1. The size of the coupling gap 101 can be the spacing between the area on the first radiator 110 closest to the second radiator 120 and the area on the second radiator 120 closest to the first radiator 110 along the stacking direction H1. The size of the coupling gap 101 can be between 0.02 times and 0.05 times the wavelength corresponding to the intermediate frequency of the first frequency band and the second frequency band.

[0076] The size D2 of the coupling gap 101 between the first radiator 110 and the second radiator 120 of the antenna device 100 of the embodiment of the present application is greater than or equal to 0.02λ3 and less than or equal to 0.05λ3. The spacing between the first radiator 110 and the second radiator 120 is moderate. The excitation current provided by the signal source 130 is more easily electromagnetically coupled to the second radiator 120, and the circular polarization performance of the antenna device 100 is better.

[0077] Please refer again to Figures 1 to 11The second radiator 120 of the embodiment of the present application can be arranged around the outer periphery of the first radiator 110, so that the second radiator 120 can be located outside the first radiator 110, and the first radiator 110 can be located inside the open ring structure 102 of the second radiator 120. At this time, the first radiator 110 and the second radiator 120 can cover a larger space. Under the excitation of the signal source 130, the first radiator 110 and the second radiator 120 can be electromagnetically coupled, and the radiation area when the first radiator 110, the second radiator 120 and the floor 140 jointly support the wireless signal is larger.

[0078] It is understandable that the second radiator 120 can be disposed in the same layer as the first radiator 110 and the second radiator 120 can be disposed around the outer periphery of the first radiator 110; the second radiator 120 can also be stacked with the first radiator 110 along the stacking direction H1, and the projection of the second radiator 120 along the stacking direction H1 can be disposed around the outer periphery of the first radiator 110. The specific manner in which the second radiator 120 is disposed around the outer periphery of the first radiator 110 is not limited in the embodiment of the present application.

[0079] Among them, please refer to Fig.12 , Fig.12 This is a fourth structural diagram of the antenna device 100 provided in an embodiment of the present application, in which the first radiator 110 may also be arranged around the outer circumference of the second radiator 120. In this case, the first radiator 110 may be an annular structure, or a avoidance space may be provided inside the first radiator 110, and the second radiator 120 may be located inside the annular structure or arranged in the avoidance space, so that the first radiator 110 may be arranged around the outer circumference of the second radiator 120. In this case, under the excitation of the signal source 130, the first radiator 110 and the second radiator 120 may also be electromagnetically coupled.

[0080] Among them, please refer to Fig.13 , Fig.13 The fifth structural schematic diagram of the antenna device 100 provided in the embodiment of the present application. The second radiator 120 can be stacked with the first radiator 110 and the projection of the second radiator 120 along the stacking direction H1 can be located on the first radiator 110, and the projection area of ​​the second radiator 120 along the stacking direction H1 can be less than or equal to the projection area of ​​the first radiator 110 along the stacking direction H1. At this time, since the first radiator 110 and the second radiator 120 are stacked, under the excitation of the signal source 130, the first radiator 110 and the second radiator 120 can also be electromagnetically coupled.

[0081] It should be noted that the above is only an exemplary description of the setting positions of the first radiator 110 and the second radiator 120 in the embodiment of the present application. The first radiator 110 and the second radiator 120 may also have other positional relationships. Any position scheme that can enable the first radiator 110 to be electromagnetically coupled with the second radiator 120 is within the protection scope of the embodiment of the present application, and the embodiment of the present application is not limited to this.

[0082] In order to further improve the antenna performance of the antenna device 100, please refer to Fig.14 , Fig.14 This is a sixth structural diagram of the antenna device 100 provided in an embodiment of the present application. The antenna device 100 may further include at least one third radiator 170 .

[0083] Each third radiator 170 may be stacked and spaced apart from the floor 140, and each third radiator 170 may have a certain distance from the floor 140 along the stacking direction H1. Each third radiator 170 may be electromagnetically coupled to the first radiator 110. Under the excitation of the signal source 130, the signal source 130 may excite the first radiator 110, the second radiator 120, at least one third radiator 170, and the floor 140 to jointly support the transmission and reception of wireless signals in a circularly polarized manner.

[0084] For example, the signal source 130 can excite the first radiator 110, the second radiator 120, the at least one third radiator 170 and the floor 140 to support the transmission and reception of wireless signals in the first frequency band in a first circular polarization manner relative to the reference plane M0, and support the transmission and reception of wireless signals in the second frequency band in a second circular polarization manner. Wherein, relative to the reference plane M0, one of the first circular polarization and the second circular polarization is left-hand circular polarization, and the other is right-hand circular polarization.

[0085] It is understandable that if Fig.14 As shown, the third radiator 170 may also include an open ring structure 171, and the open ring structure 171 of the third radiator 170 may also be an asymmetric structure relative to the first axis L1 of the first radiator 110. At this time, the third radiator 170 may also generate a resonant mode that can realize circular polarization radiation like the second radiator 120, thereby further improving the circular polarization radiation performance of the antenna device 100.

[0086] It is understandable that the third radiator 170 can be arranged in the same layer or in a different layer as the second radiator 120. The third radiator 170 can be arranged around the outer periphery of the second radiator 120, so that the second radiator 120 and the third radiator 170 can form a concentric open ring structure. Of course, the second radiator 120 can also be arranged around the outer periphery of the third radiator 170, so that the third radiator 170 can be located between the second radiator 120 and the first radiator 110. The embodiment of the present application does not limit the specific arrangement of the third radiator 170.

[0087] The antenna device 100 according to the embodiment of the present application is provided with at least one third radiator 170 . The third radiator 170 can be electromagnetically coupled with the first radiator 110 , which can further improve the radiation performance of the antenna device 100 .

[0088] Based on the structure of the antenna device 100, the embodiment of the present application also provides an electronic device 10, which can be a smart phone, a tablet computer, or a gaming device, an augmented reality (AR) device, an automotive device, a data storage device, an audio player, a video player, a laptop, a desktop computing device, etc. Please refer to Fig.15 , Fig.15 The first structural diagram of the electronic device 10 provided in the embodiment of the present application. The electronic device 10 may include the antenna device 100 of any of the above embodiments. Fig.15 As shown, the electronic device 10 may further include a display screen 200 , a middle frame 300 , a circuit board 400 , a battery 500 , and a rear cover 600 .

[0089] The display screen 200 can be mounted on the middle frame 300 and connected to the rear case 600 through the middle frame 300 to form a display surface of the electronic device 10. The display screen 200 can be used to display information such as images and texts. The display screen 200 can be a display device of the type of an organic light-emitting diode (OLED) display device or an organic light-emitting diode (OLED) display.

[0090] The middle frame 300 may include a frame 310 and a middle plate 320, and the middle plate 320 may provide support for the electronic components or electronic devices in the electronic device 10. The frame 310 is connected to the edge of the middle plate 320 and protrudes from the middle plate 320. The frame 310 and the middle plate 320 form an accommodation space, and the electronic components and electronic devices in the electronic device 10 may be installed and fixed in the accommodation space.

[0091] The circuit board 400 can be mounted on the middle frame 300. The circuit board 400 can be the mainboard of the electronic device 10. Among them, the circuit board 400 can be integrated with one, two or more electronic devices such as a microphone, a speaker, a receiver, a headphone jack, a universal serial bus interface (USB interface), a camera assembly, a distance sensor, an environmental sensor, a gyroscope and a processor. Among them, the display screen 200 can be electrically connected to the circuit board 400 to control the display of the display screen 200 through the processor on the circuit board 400. It can be understood that the middle signal source 130 can be arranged on the circuit board 400. Of course, the middle signal source 130 can also be arranged on other carrier boards of the electronic device 10 or the antenna device 100. The embodiment of the present application does not limit the specific setting position of the middle signal source 130.

[0092] The battery 500 may be mounted on the middle frame 300. At the same time, the battery 500 is electrically connected to the circuit board 400 so that the battery 500 can power the electronic device 10. A power management circuit may be provided on the circuit board 400. The power management circuit is used to distribute the voltage provided by the battery 500 to various electronic devices in the electronic device 10.

[0093] The rear case 600 may be connected to the middle frame 300, such as the frame 310. The rear case 600, the middle frame 300 and the display screen 200 may seal the electronic devices and functional components of the electronic device 10 inside the electronic device 10 to protect the electronic devices and functional components of the electronic device 10.

[0094] It is understandable that when the middle plate 320 of the middle frame 300 is made of a conductive material, part or all of the middle plate 320 can form the floor 140 of the antenna device 100. At this time, the middle plate 320 can not only carry the components of the electronic device 10 but also serve as a grounding component. The middle plate 320 can be reused, and the antenna device 100 and the electronic device 10 can be miniaturized. Of course, the floor 140 can also be set at other positions of the electronic device 10. For example, but not limited to, the floor 140 can be formed on structures such as the circuit board 400 and the back shell 600, or the floor 140 can also be set on the electronic device 10 and stacked with the circuit board 400, the middle plate 320, and the back shell 600. The specific structure of the floor 140 is not limited in the embodiment of the present application.

[0095] Among them, please refer to 16, Fig.16 This is a second structural diagram of the electronic device 10 provided in an embodiment of the present application. The electronic device 10 may further include a camera 700 and a metal decorative part 800.

[0096] The metal decoration 800 may be disposed on the rear housing 600. The metal decoration 800 is provided with at least one mounting hole 103. One camera 700 is disposed in one mounting hole 103. The first radiator 110 may include the metal decoration 800. The metal decoration 800 may be reused as the first radiator 110.

[0097] It is understandable that the metal decoration member 800 may have different shapes, and the metal decoration member 800 may be, but is not limited to, a regular shape or an irregular shape, so that the first radiator 110 may have different shapes. Fig.16 As shown, the metal decorative member 800 may be a substantially circular structure; for another example, please refer to Fig.17 , Fig.17 The third structural diagram of the electronic device 10 provided in the embodiment of the present application, the metal decorative member 800 may be roughly a rectangular structure. Wherein, as the shape of the metal decorative member 800 is different, the shape of the second radiator 120 electromagnetically coupled to the metal decorative member 800 may also be different. For example, Fig.16 As shown, the second radiator 120 may include a circular ring structure with an opening; for example, Fig.17 As shown, the second radiator 120 may include a U-shaped ring structure with an opening. The embodiment of the present application does not limit the specific formation of the first radiator 110 and the second radiator 120.

[0098] It can be understood that when the first radiator 110 reuses the metal decoration 800, the second radiator 120 can be disposed on the rear shell 600. For example, the second radiator 120 can be connected to the rear shell 600 and disposed around the outer periphery of the metal decoration 800, or the second radiator 120 can be formed on the rear shell 600 and disposed around the outer periphery of the metal decoration 800. Among them, the second radiator 120 can be disposed on the outer surface of the rear shell 600, and the outer surface of the rear shell 600 can be a side of the rear shell 600 away from the display screen 200, and the user can see the outer surface of the rear shell 600 from the outside of the electronic device 10. Of course, the second radiator 120 can also be disposed on the inner surface of the rear shell 600, and the inner surface of the rear shell 600 can be a side of the rear shell 600 close to the display screen 200, and the user cannot see the inner surface of the rear shell 600 from the outside of the electronic device 10.

[0099] It is understandable that when the first radiator 110 reuses the metal decoration 800, the second radiator 120 may also be disposed on the metal decoration 800. For example, the metal decoration 800 may include a conductor structure and a non-conductor structure, and the conductor structure may be reused as the first radiator 110, and the first radiator 110 includes a conductor structure of metal decoration; the second radiator 120 may be disposed on the non-conductor structure of the metal decoration 800; in this case, the second radiator 120 may be spaced apart from the first radiator 110 and the distance between the two is relatively close, and the second radiator 120 may be more easily electromagnetically coupled with the first radiator 110.

[0100] It is understandable that when the first radiator 110 reuses the metal decorative part 800, the second radiator 120 may not be arranged on the rear shell 600 but on other carriers. For example, but not limited to, the second radiator 120 may be a flexible printed circuit structure (Flexible Printed Circuit, referred to as FPC), laser direct structuring (Laser Direct Structuring, referred to as LDS) structure, etc., so that the second radiator 120 can be arranged on a carrier such as a circuit board 400 and an antenna bracket. It should be noted that the embodiment of the present application does not limit the specific structure and setting position of the second radiator 120, and any structure that can make the second radiator 120 and the first radiator 110 electromagnetically coupled is within the protection scope of the embodiment of the present application.

[0101] In the antenna device 100 and the electronic device 10 of the embodiment of the present application, when the first radiator 110 is the metal decoration 800 of the electronic device 10, and the second radiator 120 is arranged on the rear shell 600 or the metal decoration 800, the circularly polarized radiation patterns of the first resonance mode and the second resonance mode generated by the first radiator 110, the second radiator 120 and the floor 140 under the excitation of the signal source 130 can be oriented toward the side where the outer surface of the rear shell 600 is located. When the user holds the electronic device 10, the circularly polarized radiation pattern is not easy to be oriented toward the user's face (or head), which can avoid the human head from blocking the circularly polarized radiation patterns of the first resonance mode and the second resonance mode, and can ensure the radiation performance of the first resonance mode and the second resonance mode; at the same time, the radiation direction of the first resonance mode is at a certain distance from the human head, which can also reduce the specific absorption rate (SAR) of electromagnetic waves.

[0102] It should be noted that the above is only an exemplary description of the electronic device 10 of the embodiment of the present application. The electronic device 10 may also include other structures, such as but not limited to an acoustic-to-electric conversion device, a camera device, etc., and the embodiment of the present application does not limit this.

[0103] In the description of this application, it should be understood that terms such as "first" and "second" are only used to distinguish similar objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0104] The antenna device and electronic device provided in the embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. An antenna device, characterized in that: include: floor; A first radiator, stacked and spaced apart from the floor, the first radiator comprising a feeding point, the feeding point and a first center point of the first radiator forming a first axis; a signal source, electrically connected to the feeding point; a second radiator, stacked and spaced apart from the floor, and forming a coupling gap with the first radiator, the second radiator comprising a first end and a second end extending toward each other, the first end and the second end being spaced apart so that the second radiator is an open ring structure, and the open ring structure is an asymmetric structure relative to the first axis; The signal source is used to excite the first radiator, the second radiator and the floor to support the transmission and reception of wireless signals in a circularly polarized manner.

2. The antenna device according to claim 1, characterized in that The opening area of ​​the open ring structure is staggered with respect to the first axis.

3. The antenna device according to claim 1, characterized in that The signal source is used to excite the first radiator, the second radiator and the floor to jointly support the transmission and reception of wireless signals in the first frequency band and the second frequency band in a circularly polarized manner.

4. The antenna device according to claim 3, characterized in that: The signal source is also used to stimulate the first radiator, the second radiator and the floor relative to the reference plane to jointly support the transmission and reception of wireless signals in the first frequency band in a first circular polarization manner, and to support the transmission and reception of wireless signals in the second frequency band in a second circular polarization manner; wherein, Relative to the reference plane, one of the first circular polarization and the second circular polarization is left-hand circular polarization, and the other is right-hand circular polarization.

5. The antenna device according to claim 4, characterized in that: Under the action of the signal source, the first radiator and the floor, the second radiator is excited to generate the first resonance mode and the second resonance mode; wherein, The first resonance mode forms a first current distribution path and a second current distribution path on the second radiator, the first current distribution path flows from the first end toward a direction away from the first end, and the second current distribution path flows from the second end toward a direction away from the second end; The second resonant mode forms a third current distribution path, a fourth current distribution path and a fifth current distribution path arranged in sequence on the second radiator, the third current distribution path flows from the first end toward a direction away from the first end, the fourth current distribution path flows in a direction toward the first end, and the fifth current distribution path flows in a direction toward the second end.

6. The antenna device according to any one of claims 3 to 5, characterized in that: The equivalent electrical length of the second radiator is between 0.8 and 1.2 times of the wavelength corresponding to the wireless signal in the first frequency band, and between 1.2 and 1.8 times of the wavelength corresponding to the wireless signal in the second frequency band.

7. The antenna device according to any one of claims 3 to 5, characterized in that: The size range of the coupling gap between the first radiator and the second radiator is between 0.02 times and 0.05 times the wavelength of the wireless signal corresponding to the middle frequency of the first frequency band and the second frequency band.

8. The antenna device according to any one of claims 3 to 5, characterized in that: The stacking distance between the first radiator and the floor is greater than 0.02 times the wavelength of the wireless signal corresponding to the middle frequency of the first frequency band and the second frequency band.

9. The antenna device according to any one of claims 1 to 5, characterized in that: The second radiator is disposed around the outer periphery of the first radiator; or the first radiator is disposed around the outer periphery of the second radiator.

10. The antenna device according to any one of claims 1 to 5, characterized in that: The second radiator and the first radiator are disposed on the same carrier; or, the second radiator and the first radiator are stacked.

11. The antenna device according to any one of claims 1 to 5, characterized in that: An angle formed by a first line segment formed by the first end and the second center point of the open ring structure and a second line segment formed by the second end and the second center point is greater than or equal to 1° and less than or equal to 179°.

12. The antenna device according to any one of claims 1 to 5, characterized in that: The antenna device further comprises: A first impedance circuit is electrically connected to the first end; and / or, The second impedance circuit is electrically connected to the second end.

13. The antenna device according to any one of claims 1 to 5, characterized in that: The antenna device further comprises: at least one third radiator, each of the third radiators being stacked and spaced apart from the floor, and each of the third radiators being electromagnetically coupled to the first radiator; The signal source is used to excite the first radiator, the second radiator, at least one third radiator and the floor to support the transmission and reception of wireless signals in a circularly polarized manner.

14. An electronic device, characterized in that: Comprising the antenna device according to any one of claims 1 to 13.

15. The electronic device according to claim 14, characterized in that: The electronic device further includes at least one camera and a metal decorative piece, wherein the metal decorative piece is provided with at least one mounting hole, and one camera is arranged in one mounting hole; and the first radiator includes the metal decorative piece.

16. The electronic device according to claim 15, characterized in that: The electronic device further comprises a rear shell, and the metal decorative part is arranged on the rear shell; Wherein, the second radiator is arranged on the rear shell; or the second radiator is arranged on the metal decorative part.

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