CN112736448A

CN112736448A - Antenna device and electronic apparatus

Info

Publication number: CN112736448A
Application number: CN202011632462.7A
Authority: CN
Inventors: 雍征东; 张会彬; 吴坚林
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-04-30
Anticipated expiration: 2040-12-31
Also published as: CN112736448B

Abstract

The embodiment of the application provides an antenna device and an electronic device, the antenna device comprises a radiating body, a coupling piece and a signal source, the radiating body comprises a first radiating part and a second radiating part which are arranged at intervals, the signal source is electrically connected with the coupling piece, and the coupling piece respectively feeds power to the first radiating part and the second radiating part in a coupling mode through electromagnetic coupling. A first length of the first radiating portion in the first direction is different from a second length of the second radiating portion in the first direction, so that the first radiating portion can generate a first resonance of an ultra-wideband frequency band, and the second radiating portion is excited to generate a second resonance of the ultra-wideband frequency band, wherein the frequency of the first resonance is different from that of the second resonance. Based on this, according to the antenna device in the embodiment of the application, the first radiation part and the second radiation part are mutually independent, and the first resonance and the second resonance can be independently tuned by adjusting the first length and the second length, so that the tuning difficulty of the dual-frequency antenna can be reduced.

Description

Antenna device and electronic apparatus

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, electronic devices such as smart phones have more and more functions, and communication modes of the electronic devices are more diversified, and recently, the electronic devices can gradually realize Ultra Wide Band (UWB) communication. It will be appreciated that each communication mode of the electronic device requires a respective antenna to support.

However, with the development of electronic technology, electronic devices are becoming smaller and thinner, and the internal space of electronic devices is becoming smaller, so that how to rationally install UWB antennas of electronic devices is becoming a problem.

Disclosure of Invention

The embodiment of the application provides an antenna device and electronic equipment, and the antenna device is convenient to debug.

In a first aspect, an embodiment of the present application provides an antenna apparatus, including:

a signal source;

the radiator comprises a first radiation part and a second radiation part which are arranged at intervals, wherein the first length of the first radiation part along a first direction is different from the second length of the second radiation part along the first direction; and

the coupling piece is positioned between the first radiation part and the second radiation part, is electrically connected with the signal source, and is respectively in electromagnetic coupling with the first radiation part and the second radiation part so that the first radiation part generates a first resonance of an ultra-wideband frequency band, the second radiation part generates a second resonance of the ultra-wideband frequency band, and the frequency of the first resonance is different from that of the second resonance.

In a second aspect, an embodiment of the present application further provides an electronic device including the antenna apparatus as described above.

The antenna device and the electronic device provided by the embodiment of the application comprise a radiating body, a coupling piece and a signal source, wherein the radiating body comprises a first radiating part and a second radiating part which are arranged at intervals, the coupling piece is electrically connected with the signal source, and the coupling piece respectively feeds power to the first radiating part and the second radiating part in a coupling mode through electromagnetic coupling. A first length of the first radiating portion in the first direction is different from a second length of the second radiating portion in the first direction, so that the first radiating portion can generate a first resonance of an ultra-wideband frequency band, and the second radiating portion is excited to generate a second resonance of the ultra-wideband frequency band. On the basis, the antenna device of the embodiment of the application adopts a coupling piece coupling feeding form, so that the feeding form is simpler, and the wiring difficulty can be reduced; on the other hand, the radiator can excite UWB double resonance under the excitation of a feed source, and the miniaturization of the antenna device can be realized; in another aspect, the first radiating portion and the second radiating portion are spaced apart from each other, and the first radiating portion and the second radiating portion are independent from each other, so that when the first length of the first radiating portion is changed, the first resonance can be tuned without affecting the frequency of the second resonance; likewise, when the second length of the second radiating part is changed, the second resonance can be tuned without affecting the frequency of the first resonance. Therefore, the first resonance and the second resonance can be independently tuned by adjusting the first length and the second length, and the tuning difficulty of the dual-frequency antenna can be reduced.

Drawings

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

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

Fig. 2 is a schematic diagram of a second structure of an antenna apparatus according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a third antenna device according to an embodiment of the present application.

Fig. 4 is a schematic diagram of a fourth structure of an antenna apparatus according to an embodiment of the present application.

Fig. 5 is a schematic diagram of a fifth structure of an antenna apparatus according to an embodiment of the present application.

Fig. 6 is a simulation diagram of a current distribution of the antenna device shown in fig. 4.

Fig. 7 is a simulation diagram of a current distribution of the antenna device shown in fig. 4.

Fig. 8 is a graph illustrating a reflection coefficient curve of the antenna device shown in fig. 4.

Fig. 9 is a diagram illustrating a system efficiency curve of the antenna device shown in fig. 4.

Fig. 10 is a schematic structural diagram of a first electronic device according to an embodiment of the present application.

Fig. 11 is a second structural schematic diagram of an electronic device according to an embodiment of the present application.

FIG. 12 is a graph of the PDOA level for the electronic device shown in FIG. 11 at a frequency of 6.5 GHz.

FIG. 13 is a graph of PDOA in a horizontal plane for the electronic device shown in FIG. 11 at a frequency of 8 GHz.

FIG. 14 is a graph of vertical plane PDOA for the electronic device shown in FIG. 11 at a frequency of 6.5 GHz.

FIG. 15 is a graph of vertical plane PDOA for the electronic device shown in FIG. 11 at a frequency of 8 GHz.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to fig. 1 to 15 in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present disclosure further provides an antenna apparatus for implementing a Wireless communication function of an electronic device, for example, the antenna apparatus may transmit a Wireless Fidelity (Wi-Fi) signal, a Global Positioning System (GPS) signal, a fourth Generation mobile communication technology (3th-Generation, 3G), a third Generation mobile communication technology (4th-Generation, 4G), a fifth Generation mobile communication technology (5th-Generation, 5G), a Near Field Communication (NFC) signal, and the like.

Referring to fig. 1, fig. 1 is a first structural schematic diagram of an antenna device according to an embodiment of the present disclosure. The antenna device 100 includes a signal source 110, a radiator 120, and a coupler 130, where the radiator 120 includes a first radiation part 121 and a second radiation part 122, the signal source 110 may provide an excitation signal, the signal source 110 is electrically connected to the coupler 130, and the coupler 130 is respectively connected to the first radiation part 121 and the second radiation part 122 in an electromagnetic coupling manner to couple the excitation signal to the first radiation part 121 and the second radiation part 122.

The first and

second radiation parts

121 and 122 may be disposed at intervals, and a gap may be formed between the first and

second radiation parts

121 and 122 so that the first and

second radiation parts

121 and 122 are independent of each other. The first radiating portion 121 has a first length L1 along the first direction H1, the second radiating portion 122 has a second length L2 along the first direction H1, and the first length L1 may be different from the second length L2.

The coupling element 130 may be located between the first radiation part 121 and the second radiation part 122, so that when the signal source 110 feeds the excitation signal to the coupling element 130, the coupling element 130 may transmit the excitation signal to the first radiation part 121 and the second radiation part 122 through electromagnetic coupling to excite the first radiation part 121 to generate a first resonance of an ultra-wideband frequency band, and excite the second radiation part 122 to generate a second resonance of the ultra-wideband frequency band, where a frequency of the first resonance may be different from a frequency of the second resonance.

It is understood that when the first length L1 is different from the second length L2, the frequency of the first resonance of the UWB generated by the first radiating part 121 may be different from the frequency of the second resonance of the UWB generated by the second radiating part 122.

It is understood that UWB technology is a wireless carrier communication technology using a frequency bandwidth of 1GHz or more. It does not adopt sinusoidal carrier, but uses nanosecond non-sinusoidal wave narrow pulse to transmit data, so the occupied frequency spectrum range is large, although wireless communication is used, the data transmission rate can reach several hundred megabits per second or more. Signals can be transmitted over a very wide bandwidth using UWB technology, which is specified by the Federal Communications Commission (FCC) in the united states as: and the bandwidth of more than MHz is occupied in the frequency band of 3.1-10.6 GHz.

It is understood that the first radiation part 121, the second radiation part 122 and the coupling part 130 may be metal sheets in the form of patches. The coupling element 130 couples and feeds the two radiation portions, and in this case, the antenna apparatus 100 may be provided with only one signal source 110 to excite two types of resonance, so that the antenna apparatus 100 may be miniaturized.

The antenna device 100 according to the embodiment of the present application uses a patch antenna with two grounded ends, and slits are formed at a specific position of the radiator 120, and the patch antenna is fed through the coupling element 130, so that the patch antenna is excited to generate two modes, thereby implementing dual-frequency radiation.

It is understood that the distance of the slit of the radiator 120 at a specific position may be within a preset range. For example, the separation distance between the first radiation part 121 and the second radiation part 122 may be greater than 0 and less than or equal to 2 mm, so that the first radiation part 121 and the second radiation part 122 may generate both the first resonance and the second resonance, and may avoid the first resonance and the second resonance from interfering.

In the antenna device 100 of the embodiment of the application, the radiator 120 includes the first radiation part 121 and the second radiation part 122 which are arranged at an interval, and the coupling element 130 couples and feeds power to the first radiation part 121 and the second radiation part 122 respectively through electromagnetic coupling, so that the feeding form is simpler, and the difficulty of wiring can be reduced. Also, a first length L1 of the first radiation part 121 in the first direction H1 is different from a second length L2 of the second radiation part 122 in the first direction H1, and when the coupling 130 feeds the excitation signal to the first radiation part 121 and the second radiation part 122, the first radiation part 121 may generate a first resonance of an ultra-wideband frequency band and the excitation of the second radiation part 122 may generate a second resonance of the ultra-wideband frequency band. Based on this, in the antenna device 100 according to the embodiment of the present application, on one hand, the radiator 120 may excite dual resonance of UWB under excitation of one feed source, and thus miniaturization of the antenna device 100 may be achieved; on the other hand, the first radiation part 121 and the second radiation part 122 are spaced apart from each other, and the first radiation part 121 and the second radiation part 122 are independent from each other, so that when the first length L1 of the first radiation part 121 is changed, the first resonance can be tuned without affecting the frequency of the second resonance; likewise, when the second length L2 of the second radiation part 122 is changed, the second resonance can be tuned without affecting the frequency of the first resonance. Therefore, by adjusting the first length L1 and the second length L2, the first resonance and the second resonance can be tuned independently, and the tuning difficulty of the dual-band antenna can be reduced.

Please refer to fig. 2 in combination with fig. 1, and fig. 2 is a schematic diagram of a second structure of an antenna device according to an embodiment of the present application. The antenna device 100 may further include a ground plane 140, and the first and

second radiation parts

121 and 122 of the radiator 120 may be electrically connected to the ground plane 140 through an electrical connection member.

The ground plane 140 may form a common ground. The ground plane 140 may be formed by a conductor, a printed wiring, a metal printed layer, or the like in the electronic device. For example, the ground plane 140 may be disposed on a circuit board of an electronic device. The ground plane 140 may also be formed on a housing of the electronic device, for example, the ground plane 140 may be formed by a middle frame of the housing, or the ground plane 140 may also be formed by a battery cover of the housing.

The antenna device 100 may comprise a first electrical connector 150 and a second electrical connector 160. One end of the first electrical connector 150 may be electrically connected to the first radiation part 121, and the other end of the first electrical connector 150 may be electrically connected to the ground plane 140, so that the first radiation part 121 may be electrically connected to the ground plane 140 through the first electrical connector 150. One end of the second electrical connector 160 may be electrically connected with the second radiation part 122, and the other end of the second electrical connector 160 may be electrically connected with the ground plane 140, so that the second radiation part 122 may be electrically connected with the ground plane 140 through the second electrical connector 160.

It is understood that the first and second

electrical connectors

150 and 160 may be, but are not limited to, ground clips, wires. The embodiments of the present application do not limit the specific structures of the two.

In the antenna device 100 of the embodiment of the present application, when the first radiation portion 121 and the second radiation portion 122 are electrically connected to the ground plane 140 through the electrical connection member, on one hand, the structure is simple, and the production cost is low; on the other hand, the first radiation part 121 and the second radiation part 122 may be disposed at suitable positions of the antenna device 100 without being restricted by the ground plane 140, and the mounting position of the antenna device 100 is more flexible.

Please refer to fig. 3 in combination with fig. 1, and fig. 3 is a schematic diagram of a third structure of an antenna device according to an embodiment of the present application. The first and

second radiation parts

121 and 122 of the radiator 120 may be electrically connected to the ground plane 140 through electromagnetic coupling. The antenna device 100 may further include a dielectric substrate 170.

The dielectric substrate 170 may include a first surface 171 and a second surface 172 that are oppositely disposed, the first and

second radiation parts

121 and 122 of the radiator 120 may be disposed on the first surface 171 of the dielectric substrate 170, and the ground plane 140 may be disposed on the second surface 172 of the dielectric substrate 170.

It is understood that a projection of the ground plane 140 on the first surface 171 may cover the first radiation part 121 and the second radiation part 122, so that both the first radiation part 121 and the second radiation part 122 may be connected to the ground plane 140 to realize grounding of the first radiation part 121 and the second radiation part 122.

It is understood that in the embodiment shown in fig. 3, the first and

second radiation parts

121 and 122 are not in a physical electrical connection relationship with the ground plane 140, and the two are not physically connected by an electrical connector. At this time, a patch antenna may be formed between the first and

second radiation parts

121 and 122 and the ground plane 140, the first radiation part 121 may excite a first resonance generating a half-wavelength mode, and the second radiation part 122 may generate a second resonance generating a quarter-wavelength mode.

It is understood that the dielectric substrate 170 may be made of polytetrafluoroethylene (FR4), and of course, the dielectric substrate 170 may be made of other materials conforming to the base material of the patch antenna.

In the antenna device 100 of the embodiment of the application, the radiator 120 and the ground plane 140 are respectively disposed on two opposite sides of the dielectric substrate 170, the radiator 120 is electrically connected to the ground plane 140 through electromagnetic coupling, and the antenna device 100 may be a patch antenna, at this time, the antenna device 100 does not need to have a clearance area, and the mounting difficulty of the antenna device 100 is lower. Moreover, the first radiation part 121, the second radiation part 122 and the ground plane 140 are all integrated on the dielectric substrate 170, so that the antenna device 100 is modularized, and is less affected by the surrounding environment, and the radiation performance of the antenna device 100 is better.

It is understood that, when the first radiation part 121, the second radiation part 122 and the ground plane 140 are respectively located on two sides of the dielectric substrate 170, the ground plane 140 may also be connected to the first radiation part 121 and the second radiation part 122 through electrical connectors to achieve grounding of the first radiation part 121 and the second radiation part 122. For example, please refer to fig. 4 and fig. 5 in combination with fig. 3, fig. 4 is a schematic diagram of a fourth structure of the antenna device according to the embodiment of the present application, and fig. 5 is a schematic diagram of a fifth structure of the antenna device according to the embodiment of the present application. The electrical connection may be a metal plated hole.

The dielectric substrate 170 may be provided with a first metal plated hole 173 and a second metal plated hole 174 penetrating through the first surface 171 and the second surface 172 of the dielectric substrate 170, the first radiation part 121 may be electrically connected to the ground plane 140 through the first metal plated hole 173, and the second radiation part 122 may be electrically connected to the ground plane 140 through the second metal plated hole 174.

It is understood that the hole walls of the first metal plated hole 173 and the second metal plated hole 174 may be coated with metal plating, and the first radiation part 121 and the second radiation part 122 may be electrically connected to the ground plane 140 through the metal plating.

It is understood that the first radiation part 121 may include a first side 1211, and the first metal plated hole 173 may be disposed on the first side 1211 to realize grounding of the first side 1211 of the first radiation part 121. The second radiation part 122 may include a second side 1221, and the second metal plated hole 174 may be disposed on the second side 1221 to implement grounding of the second side 1221 of the second radiation part 122. The first side 1211 may be parallel to the second side 1221, and the first direction H1 may be a direction perpendicular to the first side 1211 and the second side 1221.

It is understood that when the radiator 120 is a regular-shaped rectangle, if the radiator 120 is electrically connected to the ground plane 140 through electromagnetic coupling, the rectangular radiator 120 may radiate on two opposite edges equivalent to two-edge slot radiation; if the radiator 120 is electrically connected to the ground plane 140 at one side edge thereof through an electrical connector such as a metal plated hole, the rectangular radiation portion radiates at the other side edge opposite to the edge equivalent to the slot of one edge. The first direction H1 may be a direction perpendicular to the radiation slot, and if one side edge where the ground electrical connector is disposed is parallel to the radiation slot, the first direction H1 may also be a direction perpendicular to one side edge where the ground electrical connector is disposed.

For example, in fig. 4 and 5, the first radiation part 121 may further include a third side 1212 in addition to the first side 1211, the third side 1212 may be perpendicular to the first side 1211, the third side 1212 may be disposed along the first direction H1, and the first length L1 of the first radiation part 121 along the first direction H1 may be a length of the third side 1212. The second radiation part 122 may further include a fourth side 1222 in addition to the second side 1221, the fourth side 1222 may be perpendicular to the second side 1221, the fourth side 1222 may be disposed along the first direction H1, and a second length L2 of the second radiation part 122 along the first direction H1 may be a length of the fourth side 1222.

When the first metal plated hole 173 is disposed on the first side 1211, the slot radiation of the first radiation portion 121 can be the side opposite to the first side 1211, and the frequency range of the first resonance generated by the first radiation portion 121 can be tuned by adjusting the first length L1 perpendicular to the first side 1211 and the third side 1212 of the slot radiation. When the second metal plated hole 174 is disposed on the second side 1221, the slot radiation of the second radiation portion 122 may be a side opposite to the second side 1221, and at this time, the frequency range of the second resonance generated by the second radiation portion 122 may be tuned by adjusting the second length L2 perpendicular to the second side 1221 and the fourth side 1222 of the slot radiation.

Referring to fig. 4, the first radiation part 121 and the second radiation part 122 may be arranged along a second direction H2 perpendicular to the first direction H1, for example, when the first direction H1 is a horizontal direction, the first radiation part 121 and the second radiation part 122 may be arranged along a vertical direction. If the signal source 110 feeds the coupling element 130 at the side of the radiator 120, the first side 1211 may be a side edge of the first radiation part 121 away from the signal source 110, and the second side 1221 may also be a side edge of the second radiation part 122 away from the signal source 110. The first side 1211 and the second side 1221 may be located on the same side of the signal source 110. At this time, the first side 1211 and the second side 1221 are vertical directions, and the first side 1211 and the second side 1221 are parallel to the second direction H2.

In the embodiment of the present application, the first radiation portion 121 and the second radiation portion 122 are vertically disposed, the length occupied by the first radiation portion 121 and the second radiation portion 122 in the horizontal direction is small, the horizontal size of the antenna device 100 is small, and the antenna device 100 can be miniaturized.

Referring to fig. 5, the first direction H1 may be a horizontal direction, the first radiating portions 121 and the second radiating portions 122 may be arranged along the first direction H1, the first side 1211 may be a side edge of the first radiating portion 121 perpendicular to the first direction H1, and the second side 1221 may be a side edge of the second radiating portion 122 perpendicular to the first direction H1. The first side 1211 may be a side edge of the first radiation portion 121 away from the second radiation portion 122, the second side 1221 may be a side edge of the second radiation portion 122 away from the first radiation portion 121, and both the first side 1211 and the second side 1221 are in a vertical direction.

In the embodiment of the present application, the first radiation part 121 and the second radiation part 122 are horizontally disposed, and the first side 1211 and the second side 1221 electrically connected to the ground plane 140 are located at the outermost side of the whole radiator 120, and at this time, the current distributions of the first radiation part 121 and the second radiation part 122 are superposed in the same direction, so that a transmission mode of the superposition in the same direction can be excited, and the radiation performance of the radiator 120 is better.

In the antenna device 100 according to the embodiment of the present application, the first radiation portion 121 and the second radiation portion 122 are electrically connected to the ground plane 140 through the first metal plated hole 173 and the second metal plated hole 174, the first radiation portion 121 and the second radiation portion 122 may be equivalent to a radiator 120 radiating through an edge slot, and at this time, the first radiation portion 121 and the second radiation portion 122 may excite a quarter-wavelength mode. As can be seen from the relationship between the wavelength, the frequency and the antenna radiation length, the antenna radiation length for exciting the quarter-wavelength mode can be at least smaller than the antenna radiation length for exciting the half-wavelength mode. Accordingly, the antenna device 100 according to the embodiment of the present application can significantly reduce the sizes of the first radiation portion 121 and the second radiation portion 122, and further reduce the size of the antenna device 100.

It is understood that the number of the first metal plated holes 173 may be plural, a plurality of the first metal plated holes 173 may be sequentially arranged at intervals on the first side 1211, and a plurality of the first metal plated holes 173 may be arranged in a row. By providing a plurality of first metal plated holes 173, an effective electrical connection of the first radiation part 121 with the ground plane 140 can be ensured.

It is understood that the number of the second metal plated holes 174 may be multiple, a plurality of the second metal plated holes 174 may be sequentially arranged on the second side 1221 at intervals, and a plurality of the second metal plated holes 174 may be arranged in a row. By providing a plurality of second metal plated holes 174, an effective electrical connection of the second radiation portion 122 to the ground plane 140 can be ensured.

It is understood that, in the above solution, the ground plane 140 is electrically connected to the first radiation portion 121 and the second radiation portion 122 through the first metal plated hole 173 and the second metal plated hole 174, and in practical use, the ground plane may also be electrically connected through other electrical connection elements, such as but not limited to a wire, a microstrip line, a stripline, a coplanar waveguide, a ground spring, and the like.

Based on the structure of the antenna device 100 described above, when the first length L1 of the first radiation section 121 in the first direction H1 is greater than the second length L2 of the second radiation section 122 in the first direction H1, the frequency range of the first resonance generated by the first radiation section 121 may include 6.5GHz, and the frequency range of the second resonance generated by the second radiation section 122 may include 8 GHz. For example, referring to fig. 6 to 9, fig. 6 is a current distribution simulation diagram of the antenna device shown in fig. 4, fig. 7 is a current distribution simulation diagram of the antenna device shown in fig. 4, fig. 8 is a reflection coefficient curve diagram of the antenna device shown in fig. 4, and fig. 9 is a system efficiency curve diagram of the antenna device shown in fig. 4.

As can be seen from fig. 6 and 8, when the signal source 110 feeds the excitation signal, the excitation signal of 6.5GHZ can be intensively distributed in the first radiation part 121 by adjusting the first length L1 of the first radiation part 121, so that the first radiation part 121 can generate the first resonance of 6.5 GHZ. Similarly, as can be seen from fig. 7 and 8, by adjusting the second length L2 of the second radiation part 122, the excitation signal of 8.0GHz can be intensively distributed on the second radiation part 122, so that the second radiation part 122 can generate the second resonance of 6.5 GHz.

It is understood that the output terminal of the signal source 110 may provide signals of 6.5GHz and 8GHz so that the first and

second radiation parts

121 and 122 may generate the first and second resonances. It is understood that the output of the signal source 110 may also provide a signal of only one frequency, for example, a signal of 6.5GHz, and the first radiation part 121 may generate a first resonance under the action of the excitation signal of 6.5GHz, and the second radiation part 122 may generate a second resonance under the action of the tuning element.

As can be seen from fig. 8, the isolation of the antenna device 100 is about-20 dB between 6.5GHz and 6.6GHz, and the isolation of the antenna device 100 is about-25 dB between 8GHz and 8.1GHz, both of which are less than-10 dB, so that the antenna device 100 has good isolation in the operating frequencies of 6.5GHz and 8 GHz. As can be seen from fig. 9, the system efficiency of the antenna device 100 resonating in the first frequency band of 6.5GHz may be-3 dB, the system efficiency of the antenna device 100 resonating in the second frequency band of 8GHz may be-2 dB, the system efficiency of the antenna device 100 is better, and the radiation performance of the antenna device 100 is extremely excellent.

It is to be understood that the above is merely an illustrative example of the operation of the antenna device 100 according to the embodiment of the present application in the UWB communication band. The antenna device 100 of the embodiment of the present application may also operate at other frequencies of the UWB communication frequency, for example, operate at other operating frequency bands of the 3.1GHz to 10.6GHz frequency bands.

It is to be understood that the antenna device 100 according to the embodiment of the present application may also operate in a non-UWB communication band, for example, the antenna device 100 according to the embodiment of the present application may also operate in any two frequency bands of a 2.4GWi-Fi band (2.4GHz-2.48GHz), a GPS frequency band (1.55GHz-1.6GHz), a GPS L5 frequency band (1.15GHz to 1.2GHz), an N78 frequency band (3.4GHz to 3.6GHz), an N79 frequency band (4.8GHz to 4.9GHz), and the like. Of course, the frequency band in which the antenna device 100 operates is not limited to the above example, and will not be described in detail here.

Based on the structure of the antenna device 100, the embodiment of the present application further provides an electronic device. The electronic device may be a smart phone, a tablet computer, or other devices, and may also be a game device, an Augmented Reality (AR) device, an automobile device, a data storage device, an audio playing device, a video playing device, a notebook computer, a desktop computing device, or other devices. Referring to fig. 10, fig. 10 is a first structural schematic diagram of an electronic device according to an embodiment of the present disclosure. The electronic device 10 may include a display 200, a middle frame 300, a circuit board 400, a battery 500, and a rear case 600 in addition to the antenna apparatus 100.

The display screen 200 is disposed on the middle frame 300 to form a display surface of the electronic device 10, and is used for displaying information such as images and texts. The Display 200 may include a Liquid Crystal Display (LCD) or an Organic Light-Emitting Diode (OLED) Display.

It is understood that the display screen 200 may be a full-screen display, in which case the entire area of the display screen 200 is the display area and does not include the non-display area, or the non-display area on the display screen 200 occupies only a small area for the user, so that the display screen 200 has a large screen occupation ratio. Alternatively, the display 200 may be a non-full screen, in which case the display 200 includes a display area and a non-display area adjacent to the display area. The display area is used for displaying information, and the non-display area does not display information.

It is understood that a cover plate may be further disposed on the display 200 to protect the display 200 and prevent the display 200 from being scratched or damaged by water. The cover plate may be a transparent glass cover plate, so that a user can observe contents displayed by the display screen 200 through the cover plate. It will be appreciated that the cover plate may be a glass cover plate of sapphire material.

The middle frame 300 may have a thin plate-like or sheet-like structure, or may have a hollow frame structure. The middle frame 300 is used to provide support for the electronic devices or functional components in the electronic device 10 to mount the electronic devices or functional components of the electronic device 10 together. For example, the middle frame 300 may be provided with a groove, a protrusion, a through hole, etc. to facilitate mounting of the electronic device or the functional component of the electronic apparatus 10. It is understood that the material of the middle frame 300 may include metal or plastic.

The circuit board 400 is disposed on the middle frame 300 to be fixed, and the circuit board 400 is sealed inside the electronic device 10 by the rear case 600. The circuit board 400 may be a main board of the electronic device 10. The circuit board 400 may have a processor integrated thereon, and may further have one or more of a headset interface, an acceleration sensor, a gyroscope, a motor, and the like integrated thereon. Meanwhile, the display screen 200 may be electrically connected to the circuit board 400 to control the display of the display screen 200 by a processor on the circuit board 400. The signal source 110 of the antenna device 100 may be disposed on the circuit board 400.

The battery 500 is disposed on the middle frame 300, and the battery 500 is sealed inside the electronic device 10 by the rear case 600. Meanwhile, the battery 500 is electrically connected to the circuit board 400 to enable the battery 500 to power the electronic device 10. The circuit board 400 may be provided thereon with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 500 to the various electronic devices in the electronic device 10.

The rear case 600 is coupled to the middle frame 300. For example, the rear case 600 may be attached to the middle frame 300 by an adhesive such as a double-sided tape to achieve connection with the middle frame 300. The rear case 600 is used to seal the electronic devices and functional components of the electronic device 10 inside the electronic device 10 together with the middle frame 300 and the display screen 200, so as to protect the electronic devices and functional components of the electronic device 10.

Referring to fig. 11, fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The electronic device 10 may include at least three antenna apparatuses 100, and a plurality of antenna apparatuses 100 may be used to detect the position of the target object to implement three-dimensional angle measurement.

Exemplarily, as shown in fig. 11, the electronic device 10 includes a first antenna device 100a, a second antenna device 100b, and a third antenna device 100c, wherein the first antenna device 100a and the second antenna device 100b may be arranged in a mirror image about a first axis Y, which may be a vertical axis. The first and

third antenna arrangements

100a, 100c may be arranged in mirror image about a second axis X, which may be a horizontal axis. The first axis Y may be perpendicular to the second axis X.

The first antenna device 100a may be located at the origin position, the second antenna device 100b may be located at the horizontal position, and the third antenna device 100c may be located at the vertical position, so that the first antenna device 100a, the second antenna device 100b, and the third antenna device 100c may form an XOY plane and may form an X-O-Y coordinate system, the first antenna device 100a and the second antenna device 100b constitute an X axis, and the first antenna device 100a and the third antenna device 100c may constitute a Y axis. When the object with the angle to be measured transmits a signal, the horizontal and vertical coordinates of the object with the angle to be measured from the first antenna device 100a, the second antenna device 100b and the third antenna device 100c can be calculated according to the time difference of the first antenna device 100a, the second antenna device 100b and the third antenna device 100c for receiving the signal, so that the object to be measured is positioned.

It is understood that the electronic device 10 of the embodiment of the present application may use a two-way Time-of-flight (TW-TOF) method and a Time Difference of Arrival (TDOA) method to achieve positioning. The TOF ranging method measures the distance between nodes by using the time of flight of signals between two or more antenna devices 100. TDOA is the location of ranging by detecting the time difference between the arrival of a signal at two or more antenna devices 100.

As shown in fig. 11, when the second axis X is parallel to the first direction H1, in the first antenna device 100a and the third antenna device 100c, a first distance P1 between the first radiation portion 121a of the first antenna device 100a and the first radiation portion 121c of the third antenna device 100c may be equal to half of the first wavelength of the wireless signal transmitted by the first resonance, and a second distance P2 between the second radiation portion 122a of the first antenna device 100a and the second radiation portion 122c of the third antenna device 100c may be equal to half of the second wavelength of the wireless signal transmitted by the second resonance. In this case, the PDOA performance of the electronic device 10 is superior.

It is understood that, when the first radiation part 121 transmits a 6.5GHz UWB signal, the first distance P1 between the two

first radiation parts

121a and 121c may be 23 mm. When the second radiation part 122 transmits an 8GHz UWB signal, the second distance P2 between the two

second radiation parts

122a and 122c may be 18 mm.

Illustratively, referring to fig. 12 to 15, fig. 12 is a horizontal PDOA graph of the electronic device shown in fig. 11 at a frequency of 6.5GHz, fig. 13 is a horizontal PDOA graph of the electronic device shown in fig. 11 at a frequency of 8GHz, fig. 14 is a vertical PDOA graph of the electronic device shown in fig. 11 at a frequency of 6.5GHz, and fig. 15 is a vertical PDOA graph of the electronic device shown in fig. 11 at a frequency of 8 GHz. As can be seen from fig. 12 to 15, the slope of the PDOA curve of the electronic device 10 according to the embodiment of the present application is large, the PDOA performance of the electronic device 10 is excellent, and the angle measurement accuracy is improved.

In the electronic device 10 of the embodiment of the application, the first pitch P1 is half of the first wavelength, and the second pitch P2 is equal to half of the second wavelength, at this time, the slope of the PDOA curve of the electronic device 10 is better, and no phenomena such as jump occur, so that the PDOA performance of the electronic device 10 can be improved.

With continued reference to fig. 11, a first distance P1 between the first radiation part 121a of the first antenna device 100a and the first radiation part 121c of the third antenna device 100c may be greater than a second distance P2 between the second radiation part 122a of the first antenna device 100a and the second radiation part 122c of the third antenna device 100 c. At this time, the two

second radiation portions

122a and 122c are adjacent to each other, the two

first radiation portions

121a and 121c are respectively located outside the radiator 120, and the first pitch P1 of the two

first radiation portions

121a and 121c with longer lengths may include the second pitch P2 of the two

second radiation portions

122a and 122c with shorter lengths, so that the plurality of antenna devices 100 only need the length of the first pitch P1 in the horizontal direction, the length of the electronic device 10 is not additionally increased by the second pitch P2, and the electronic device 10 is more easily miniaturized.

Also, when the first pitch P1 is greater than the second pitch P2, since the PDOA curve slope of the antenna device 100 is proportional to the antenna pitch, the PDOA curve slope of the antenna device 100 at the frequency of 8GHz is greater, and the PDOA performance of the electronic device 10 is better.

It can be understood that, in actual debugging, the performance of the PDOA on the horizontal plane can be improved in the 6.5GHz band and the 8GHz band by adjusting the size of the gap between the two adjacent mirror-arranged antenna apparatuses 100, and the accuracy of angle measurement can be improved.

It is to be understood that, in the description of the present application, terms such as "first", "second", and the like are used merely to distinguish similar objects and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

The antenna device and the electronic device provided in the embodiments of the present application are described in detail above. The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An antenna device, comprising:

a signal source;

2. The antenna device of claim 1, further comprising:

the dielectric substrate comprises a first surface and a second surface which are oppositely arranged, and the first radiation part and the second radiation part are positioned on the first surface; and

a ground plane disposed on the second surface, a first side of the first radiating portion being connected to the ground plane to achieve grounding of the first radiating portion, a second side of the second radiating portion being connected to the ground plane to achieve grounding of the second radiating portion, the first side and the second side both being perpendicular to the first direction.

3. The antenna device according to claim 2, wherein the first radiation portion and the second radiation portion are arranged along the first direction, the first side is a side of the first radiation portion away from the second radiation portion, and the second side is a side of the second radiation portion away from the first radiation portion.

4. The antenna device according to claim 2, wherein the first and second radiation portions are aligned in a second direction perpendicular to the first direction.

5. The antenna device according to claim 2, wherein the dielectric substrate is further provided with a first metal plated hole and a second metal plated hole penetrating through the first surface and the second surface, the first radiation portion is electrically connected to the ground plane through the first metal plated hole, and the second radiation portion is electrically connected to the ground plane through the second metal plated hole.

6. The antenna device according to claim 5, wherein the number of the first metal plated holes is plural, and the plural first metal plated holes are sequentially arranged at intervals on the first side; and/or

The number of the second metal plated holes is multiple, and the second metal plated holes are sequentially arranged on the second side at intervals.

7. The antenna device of claim 1, further comprising:

the dielectric substrate comprises a first surface and a second surface which are oppositely arranged, and the first radiation part and the second radiation part are arranged on the first surface; and

a ground plane disposed on the second face, the first and second radiating portions being electrically connected to the ground plane through electromagnetic coupling.

8. The antenna device of claim 1, further comprising:

a ground plane;

a first electrical connector, one end of which is electrically connected with the first radiation part and the other end of which is electrically connected with the ground plane; and

and one end of the second electric connecting piece is electrically connected with the second radiation part, and the other end of the second electric connecting piece is electrically connected with the ground plane.

9. The antenna device according to any of claims 1 to 8, wherein the first length is greater than the second length, wherein the frequency range of the first resonance comprises 6.5GHz and the frequency range of the second resonance comprises 8 GHz.

10. An electronic device, characterized in that it comprises an antenna device according to any of claims 1 to 9.

11. The electronic device of claim 10, wherein the number of antenna devices is at least three, the at least three antenna devices including a first antenna device, a second antenna device, and a third antenna device, the first antenna device and the second antenna device being arranged in mirror image about a first axis, the first antenna device and the third antenna device being arranged in mirror image about a second axis, the first axis and the second axis being perpendicular to each other.

12. The electronic device according to claim 11, wherein the second axis is parallel to the first direction, wherein a first spacing between the first radiating portion of the first antenna device and the first radiating portion of the third antenna device is equal to half of a wavelength of the first resonance-transmitted wireless signal, and wherein a second spacing between the second radiating portion of the first antenna device and the second radiating portion of the third antenna device is equal to half of a wavelength of the second resonance-transmitted wireless signal.

13. The electronic device of claim 11, wherein the first pitch is greater than the second pitch.