CN113013616A

CN113013616A - Antenna assembly and electronic equipment

Info

Publication number: CN113013616A
Application number: CN202110209146.7A
Authority: CN
Inventors: 雍征东
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-06-22

Abstract

The embodiment of the application discloses antenna module and electronic equipment, antenna module include first antenna element, and first antenna element includes: the antenna comprises a first antenna, a second antenna and a first feed structure. The first antenna comprises a first side edge and a second side edge which are adjacent, the first side edge of the first antenna is grounded, and a first feeding point is arranged on the second side edge of the first antenna; the second antenna comprises a third side edge and a fourth side edge which are adjacent, the third side edge of the second antenna is grounded, the third side edge is far away from the first side edge, the third side edge is parallel to the first side edge, and the fourth side edge of the second antenna is provided with a second feeding point; one end of the first feeding structure is connected with the first feeding point, and the other end of the first feeding structure is connected with the second feeding point, and the first feeding structure is used for feeding excitation signals into the first antenna and the second antenna so as to excite the first antenna to generate resonance of a first frequency band and excite the second antenna to generate resonance of a second frequency band. The antenna assembly has a small size, and meanwhile, the positioning of a communication object can be realized.

Description

Antenna assembly and electronic equipment

Technical Field

The application relates to the technical field of communication, in particular to an antenna assembly and electronic equipment.

Background

In the related art, an electronic device may adopt UWB (ultra Wide band) positioning technology to achieve indoor positioning, but with the development of communication technology, the electronic device needs to support more and more types of radio frequency signals, for example, radio frequency signals such as 4G, 5G, WiFi, etc., so that more antennas are arranged inside the electronic device, and further, the space inside the electronic device is smaller and smaller, which is not enough to arrange a UWB antenna to achieve positioning. Therefore, positioning is realized by arranging the UWB antenna on the electronic device with a small size, which is a problem to be solved urgently.

Disclosure of Invention

The embodiment of the application provides an antenna assembly and electronic equipment. The antenna assembly is small in size, can be arranged in electronic equipment with small internal space, and achieves positioning of communication objects by the electronic equipment.

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

a first antenna element, the first antenna element comprising:

the antenna comprises a first antenna and a second antenna, wherein the first antenna comprises a first side edge and a second side edge which are adjacent to each other, the first side edge of the first antenna is grounded, and a first feeding point is arranged on the second side edge of the first antenna;

the second antenna comprises a third side edge and a fourth side edge which are adjacent, the third side edge of the second antenna is grounded, the third side edge of the second antenna is far away from the first side edge of the first antenna, the third side edge of the second antenna is parallel to the first side edge of the first antenna, and the fourth side edge of the second antenna is provided with a second feeding point;

and one end of the first feeding structure is connected with the first feeding point, and the other end of the first feeding structure is connected with the second feeding point, and the first feeding structure is used for feeding excitation signals into the first antenna and the second antenna so as to excite the first antenna to generate resonance of a first frequency band and excite the second antenna to generate resonance of a second frequency band.

In a second aspect, the present application provides an electronic device, where the electronic device includes the antenna assembly provided in the embodiments of the present application, and the electronic device can achieve positioning of a communication object through the antenna assembly.

The antenna module that this application embodiment provided includes first antenna element, and first antenna element includes: the antenna comprises a first antenna, a second antenna and a first feed structure. The first antenna comprises a first side edge and a second side edge which are adjacent, the first side edge of the first antenna is grounded, and a first feeding point is arranged on the second side edge of the first antenna; the second antenna comprises a third side edge and a fourth side edge which are adjacent, the third side edge of the second antenna is grounded, the third side edge of the second antenna is far away from the first side edge of the first antenna, the third side edge of the second antenna is parallel to the first side edge of the first antenna, and the fourth side edge of the second antenna is provided with a second feeding point; one end of the first feeding structure is connected with the first feeding point, and the other end of the first feeding structure is connected with the second feeding point, and the first feeding structure is used for feeding excitation signals into the first antenna and the second antenna so as to excite the first antenna to generate resonance of a first frequency band and excite the second antenna to generate resonance of a second frequency band. The antenna assembly has a small size, and meanwhile, the positioning of a communication object can be realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.

Fig. 2 is a first structural schematic diagram of an antenna assembly provided in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a first antenna unit provided in an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a first antenna unit provided in an embodiment of the present application.

Fig. 5 is a second structural schematic diagram of an antenna assembly provided in an embodiment of the present application.

Fig. 6 is a third structural schematic diagram of an antenna assembly provided by an embodiment of the present application.

Fig. 7 is a fourth structural schematic diagram of an antenna assembly provided in an embodiment of the present application.

Fig. 8 is a fifth structural schematic diagram of an antenna assembly provided in an embodiment of the present application.

Fig. 9 is a first schematic diagram of the sizes of an antenna assembly provided by an embodiment of the present application.

Fig. 10 is a second schematic diagram of the dimensions of an antenna assembly provided by an embodiment of the present application.

Fig. 11 is a first arrival phase difference graph of an antenna assembly provided by an embodiment of the present application.

Fig. 12 is a second arrival phase difference graph of an antenna assembly provided by an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, terms such as "first", "second", are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined by terms such as "first," "second," etc., may explicitly or implicitly include one or more of the recited features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the application provides electronic equipment. 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, a data storage device, an audio playing device, a video playing device, a notebook, a desktop computing device, or other devices.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.

The electronic device 100 includes a display screen 10, a housing 20, a circuit board 30, and a battery 40.

The display screen 10 is disposed on the casing 20 to form a display surface of the electronic device 100 for displaying images, texts, and other information. The Display screen 10 may include a Liquid Crystal Display (LCD) or an Organic Light-Emitting Diode (OLED) Display screen.

It will be appreciated that the display screen 10 may include a display surface and a non-display surface opposite the display surface. The display surface is a surface of the display screen 10 facing a user, i.e. a surface of the display screen 10 visible to a user on the electronic device 100. The non-display surface is a surface of the display screen 10 facing the inside of the electronic device 100. The display surface is used for displaying information, and the non-display surface does not display information.

It will be appreciated that a cover plate may also be provided over the display screen 10 to protect the display screen 10 from scratching or water damage. The cover plate may be a transparent glass cover plate, so that a user can observe contents displayed on the display screen 10 through the cover plate. It will be appreciated that the cover plate may be a glass cover plate of sapphire material.

The housing 20 is used to form an outer contour of the electronic apparatus 100 so as to accommodate electronic devices, functional components, and the like of the electronic apparatus 100, while forming a sealing and protecting function for the electronic devices and functional components inside the electronic apparatus. For example, functional components such as a camera, a circuit board, a vibration motor, etc. of the electronic apparatus 100 may be disposed inside the housing 20. It will be appreciated that the housing 20 may include a center frame and a rear cover.

The middle frame may have a thin plate-like or sheet-like structure, or may have a hollow frame structure. The middle frame is used for providing a supporting function for the electronic devices or functional components in the electronic device 100 so as to mount the electronic devices or functional components of the electronic device 100 together. For example, the middle frame may be provided with a groove, a protrusion, or the like, so as to facilitate installation of the electronic device or the functional component of the electronic apparatus 100. It is understood that the material of the middle frame may include metal or plastic.

The rear cover is connected with the middle frame. For example, the rear cover may be attached to the middle frame by an adhesive such as a double-sided tape to achieve connection with the middle frame. The rear cover is used for sealing the electronic devices and functional components of the electronic device 100 inside the electronic device 100 together with the middle frame and the display screen 10, so as to protect the electronic devices and functional components of the electronic device 100. It will be appreciated that the rear cover may be integrally formed. In the forming process of the rear cover, structures such as a rear camera mounting hole can be formed on the rear cover. It is understood that the material of the rear cover may also include metal or plastic.

A circuit board 30 is disposed inside the housing 20. For example, the circuit board 30 may be mounted on a middle frame of the case 20 to be fixed, and the circuit board 30 is sealed inside the electronic device by a rear cover. Specifically, the circuit board may be installed at one side of the loading plate, and the display screen is installed at the other side of the loading plate. The circuit board 30 may be a main board of the electronic device 100. One or more of functional components such as a processor, a camera, an earphone interface, an acceleration sensor, a gyroscope, and a motor may also be integrated on the circuit board 30. Meanwhile, the display screen 10 may be electrically connected to the circuit board 30 to control the display of the display screen 10 by a processor on the circuit board 30.

The battery 40 is disposed inside the case 20. For example, the battery 40 may be mounted on a middle frame of the case 20 to be fixed, and the battery 40 is sealed inside the electronic device by a rear cover. Meanwhile, the battery 40 is electrically connected to the circuit board 30 to enable the battery 40 to supply power to the electronic device 100. The circuit board 30 may be provided thereon with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 40 to the various electronic devices in the electronic apparatus 100.

The electronic device 100 is further provided with an antenna assembly, and the antenna assembly is configured to radiate a radio frequency signal to the outside and receive a radio frequency signal from the outside, so as to implement a wireless communication function of the electronic device 100. The radio frequency signal may include one of a cellular network signal, a Wireless Fidelity (Wi-Fi) signal, a positioning signal, and the like.

Referring to fig. 2, fig. 2 is a schematic view of a first structure of an antenna assembly according to an embodiment of the present application.

The antenna assembly may be a uwb (ultra wide) antenna. The UWB antenna can be accurately positioned indoors, for example, an electronic device equipped with the UWB antenna can recognize other nearby UWB tag antennas through the UWB antenna, so that the positions of other electronic devices can be determined according to the UWB tag antennas of other electronic devices.

UWB wireless communication is a communication method using pulses with extremely short time intervals (less than 1ns) without using a carrier, and is a carrier-free communication technique that transmits data using narrow non-sinusoidal pulses on the order of nanoseconds to microseconds. By transmitting very low power signals over a wide frequency spectrum, UWB can achieve data transmission rates of hundreds of Mbit/s to Gbit/s over a range of about 10 meters. The anti-interference performance is strong, the transmission rate is high, the system capacity is large, and the transmission power is very small. UWB antenna transmission power is very small and communication devices can communicate with less than 1mW of transmission power. The low transmitting power greatly prolongs the working time of the system power supply. Moreover, the emission power is low, and the influence of electromagnetic wave radiation on a human body is small.

However, when the internal space of the electronic device is very narrow, the conventional antenna design method cannot arrange the UWB antenna inside the electronic device, and the size of the antenna assembly needs to be reduced, so that the length, the width and the height of the antenna assembly are reduced. However, in the case of the antenna assembly being reduced in size, the frequency of the radio frequency signal that can be transmitted by the UWB antenna may be changed, thereby affecting the radiation performance of the antenna assembly and the positioning effect of the electronic device.

In the embodiment of the present application, an antenna assembly is provided, which includes an antenna 50, a dielectric substrate 60, and a metal floor 70, wherein the antenna 50 is disposed on the dielectric substrate 60, and the metal floor 70 is disposed on the other side of the dielectric substrate 60 facing away from the antenna 50. I.e. the dielectric substrate 60 is arranged between the metal floor 70 and the antenna 50.

The antenna component has a thin thickness. For example, the thickness from the antenna 50 to the metal floor 70 may reach the millimeter level, and the antenna assembly may be very thin and light and may be disposed in an electronic device with a small internal space.

Meanwhile, the antenna 50 is connected with a corresponding feeder line, and the feeder line may also be disposed on the dielectric substrate 60. The dielectric substrate 60 is provided with a through hole through which a feed line can pass, and the feed line can be connected to a corresponding feed source of the antenna assembly through the through hole.

In some embodiments, corresponding through holes are provided in the metal floor 70, the through holes in the dielectric substrate 60 and the through holes in the metal floor 70 are aligned, and the feed line of the antenna 50 can be connected to the corresponding feed of the antenna assembly through the two aligned through holes. Therefore, the antenna assembly is fed and can radiate ultra-wideband radio frequency signals.

In some embodiments, when the antenna 50 radiates radio frequency signals of the same frequency, the dielectric constant of the dielectric substrate and the floor size of the metal floor 70 (the floor size is the side length of the metal floor 70) may cause the antenna size of the antenna 50 to be changed, and may also cause the antenna phase center of the antenna 50 to be changed. Wherein, the antenna phase center can be understood as: after the electromagnetic wave radiated by the antenna leaves the antenna for a certain distance, the equiphase surface of the electromagnetic wave is approximate to a spherical surface, and the spherical center of the spherical surface is the equivalent phase center of the antenna. The antenna phase center can be understood as a theoretical point in space.

Specifically, as shown in table 1, when the thickness of the dielectric substrate is 0.3mm, and the antenna 50 is square, the size of the antenna is the side length of the square, and as the dielectric constant of the dielectric substrate 60 increases, the size of the antenna 50 becomes smaller and smaller, and the phase center of the antenna 50 also changes due to the change of the antenna size, that is, the phase center of the antenna is in a standard three-dimensional space, and the coordinate vector value becomes smaller as the dielectric constant increases. Sigma is used for reflecting the stable condition of the phase center of the antenna, and the smaller the Sigma value is, the more stable the phase center of the antenna is. The distance radiation edge value refers to a distance of the antenna phase center from the radiation edge of the antenna 50.

TABLE 1

As shown in table 2, the thickness of the dielectric substrate 60 is 0.3mm, the shape of the metal floor 70 is square, the floor size is the side length of the metal floor 70, the antenna 50 is square, and the antenna size is the side length of the antenna 50. Among them, when the size of the floor is increased, the influence on the size of the antenna is not large, but the influence on the phase center of the antenna is large. As the size of the floor increases, the phase center of the antenna can be changed, that is, the vector value of the phase center of the antenna becomes smaller in a three-dimensional space.

Floor size	Antenna size	Phase center	From the edge of the radiation	Sigma
					12mm	6.46mm	(1.973,0,0.932)	-1.257mm	3.897
15mm	6.52mm	(1.534,0,1.368)	-1.72mm	2.406
					18mm	6.52mm	(1.45,0,1.397)	-1.81mm	1.73

TABLE 2

From the above, the size of the antenna 50 can be adjusted by adjusting the floor size and the dielectric constant, so that the antenna 50 can be made smaller when the antenna 50 radiates radio frequency signals of the same frequency. Or the distance between the phase centers of the antennas is adjusted by adjusting the phase centers between the antennas, so that the distance between the antennas is reduced, and finally the whole antenna assembly has smaller size.

In addition, the size of the whole antenna assembly can be reduced by adjusting the structure of the antenna assembly. Which will be described in detail below, respectively.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a first antenna unit according to an embodiment of the present application.

As shown in fig. 3, the antenna assembly includes a first antenna element including a first antenna 510 and a second antenna 520, wherein the first antenna 510 and the second antenna 520 are electrically connected, and the first antenna 510 and the second antenna 520 may employ a single signal source to pass ultra-wideband radio frequency signals. The first antenna 510 is used for transceiving a first ultra-wideband radio frequency signal, and the second antenna 520 is used for transceiving a second ultra-wideband radio frequency signal.

A first feeding point is provided on the first antenna 510 and a second feeding point is provided on the second antenna 520. The first antenna 510 and the second antenna 520 may be connected by a first feeding structure, wherein one end of the first feeding structure is connected to a first feeding point, and the other end of the first feeding structure is connected to a second feeding point, for feeding an excitation signal to the first antenna 510 and the second antenna 520 to excite the first antenna 510 to generate a resonance in a first frequency band, thereby generating a first ultra-wideband radio frequency signal. And excites the second antenna 520 to resonate in the second frequency band to produce a second ultra-wideband radio frequency signal.

The first feeding structure includes a first signal source S1, to which a first antenna 510 and a second antenna 520 are connected, S1. The first signal source S1 can output at least two different frequency bands of rf signals. The frequency range output by the first signal source S1 may be 3.1GHz to 10.6GHz, and in this frequency range, a first ultra-wideband radio frequency signal of a first frequency band and a second ultra-wideband radio frequency signal of a second frequency band are included, the frequency range of the first ultra-wideband radio frequency signal may be 3.1GHz to 7GHz, and the frequency range of the second ultra-wideband radio frequency signal may be 7GHz to 10.6 GHz.

In some embodiments, in order to improve the radiation performance of the first antenna 510, a plurality of first grounding points 515 are disposed on the first side 511 of the first antenna 510, and the plurality of first grounding points 515 are connected to the system ground of the antenna assembly, so that the grounding is realized by disposing the first grounding points 515 on the first side 511, thereby improving the radiation performance of the first antenna 510.

In order to improve the radiation performance of the second antenna 520, the plurality of second grounding points 525 are disposed on the third side 521 of the second antenna 520, the plurality of second grounding points 525 are connected to the system ground of the antenna assembly, and the second grounding points 525 are disposed on the third side 521 to realize grounding, so that the radiation performance of the second antenna 520 can be improved. The first side 511 and the third side 521 may be at least partially connected to the metal floor 70.

In some embodiments, the first antenna 510 and the second antenna 520 are rectangular in shape, the first antenna 510 further includes a second side 512, the second side 512 is adjacent to the first side 511, and the first feeding point of the first antenna 510 may be disposed on the second side 512. The second antenna 520 further includes a fourth side 522, the fourth side 522 is adjacent to the third side 521, and a second feeding point of the second antenna 520 may be disposed on the fourth side 522.

In some embodiments, the first side edge 511 and the third side edge 521 may be the same length, with the first side edge 511 and the third side edge 521 aligned in parallel. When the lengths of the first side 511 and the third side 521 are different, the first side 511 and the third side 521 are disposed in parallel.

The first side 511 and the third side 521 may be disposed in the same orientation, as shown in fig. 3, with the first side 511 disposed at the rightmost side of the first antenna 510 and the third side 521 disposed at the rightmost side of the second antenna 520. That is, the first side 511 is away from the third side 521, and the first side 511 and the second side 521 are disposed in the same orientation.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a second antenna unit according to an embodiment of the present disclosure.

As shown in fig. 4, the antenna assembly includes a second antenna unit including a third antenna 530 and a fourth antenna 540, the third antenna 530 and the fourth antenna 540 are electrically connected, and the third antenna 530 and the fourth antenna 540 may employ one signal source to pass ultra-wideband radio frequency signals. The third antenna 530 is configured to transceive a first ultra-wideband radio frequency signal, and the fourth antenna 540 is configured to transceive a second ultra-wideband radio frequency signal.

A third feeding point is provided on the third antenna 530 and a fourth feeding point is provided on the fourth antenna 540. The third antenna 530 and the fourth antenna 540 may be connected through a second feeding structure, wherein one end of the second feeding structure is connected to the third feeding point, and the other end of the second feeding structure is connected to the fourth feeding point, for feeding an excitation signal to the third antenna 530 and the fourth antenna 540, so as to excite the third antenna 530 to generate a resonance in the first frequency band, thereby generating a first ultra-wideband radio frequency signal. And excites the fourth antenna 540 to resonate in the second frequency band to produce a second ultra-wideband radio frequency signal.

The second feeding structure comprises a second signal source S2 to which a third antenna 530 and a fourth antenna 540 are connected S2. The second signal source S2 can output at least two different frequency bands of rf signals. The frequency range output by the second signal source S2 may be 3.1GHz to 10.6GHz, and in this frequency range, a first ultra-wideband radio frequency signal of a first frequency band and a second ultra-wideband radio frequency signal of a second frequency band are included, the frequency range of the first ultra-wideband radio frequency signal may be 3.1GHz to 7GHz, and the frequency range of the second ultra-wideband radio frequency signal may be 7GHz to 10.6 GHz.

In some embodiments, in order to improve the radiation performance of the third antenna 530, a plurality of third grounding points 535 are disposed on the fifth side 531 of the third antenna 530, the plurality of third grounding points 535 are connected to the system ground of the antenna assembly, and the grounding is realized by disposing the third grounding points 535 on the fifth side 531, so that the radiation performance of the third antenna 530 can be improved.

In order to improve the radiation performance of the fourth antenna 540, a plurality of fourth grounding points 545 are disposed on the seventh side 541 of the fourth antenna 540, the plurality of fourth grounding points 545 are connected to the system ground of the antenna assembly, and the fourth grounding point 545 is disposed on the seventh side 541 to realize grounding, so that the radiation performance of the fourth antenna 540 can be improved. The first side 511 and the third side 521 may be at least partially connected to the metal floor 70.

In some embodiments, the third antenna 530 and the fourth antenna 540 are rectangular in shape, the third antenna 530 further includes a sixth side 532, the sixth side 532 is adjacent to the fifth side 531, and the third feeding point of the third antenna 530 may be disposed on the sixth side 532. The fourth antenna 540 further includes an eighth side 542, the eighth side 542 is adjacent to the seventh side 541, and the fourth feeding point of the fourth antenna 540 may be disposed on the eighth side 542.

In some embodiments, the lengths of the fifth side 531 and the seventh side 541 may be the same, and the fifth side 531 and the seventh side 541 are aligned in parallel. When the lengths of the fifth side 531 and the seventh side 541 are different, the fifth side 531 and the seventh side 541 are disposed in parallel.

The fifth side 531 and the seventh side 541 may be disposed in the same direction, as shown in fig. 4, with the fifth side 531 disposed at the leftmost side of the third antenna 530 and the seventh side 541 disposed at the leftmost side of the fourth antenna 540. That is, the fifth side 531 is distant from the seventh side 541, and the fifth side 531 and the seventh side 541 are disposed in the same orientation.

Referring to fig. 5, fig. 5 is a second structural schematic diagram of an antenna element according to an embodiment of the present application.

The antenna assembly includes a first antenna unit and a second antenna unit, wherein the first side 511, the third side 521, the fifth side 531, and the seventh side 541 are disposed in parallel. When the lengths of the first side 511, the third side 521, the fifth side 531 and the seventh side 541 are the same, the first side 511, the third side 521, the fifth side 531 and the seventh side 541 are arranged in parallel and aligned.

The third side 521 and the fifth side 531 are oppositely arranged, i.e. the second ground point 525 on the third side 521 and the third ground point 535 on the fifth side 531 are oppositely arranged.

In some embodiments, the first side 511 includes a first end and a second end, wherein the first end is connected to the second side 512 and the second end is connected to the side opposite the second side 512.

The third side 531 includes a third end connected to the fourth side 522 and a fourth end connected to an opposite side of the fourth side 522.

The fifth side 531 includes a fifth end and a sixth end, wherein the fifth end is connected to the sixth side 532 and the sixth end is connected to the side opposite the sixth side 532.

The seventh side 541 includes a seventh end and an eighth end, wherein the seventh end is connected to the eighth side 542, and the eighth end is connected to the side opposite the eighth side 542.

As shown in fig. 5, a first grounding point 515 is disposed on the entire first side 511 from the first end to the second end. A second ground point 525 is provided on the entire third side 521 from the third end to the fourth end. A third ground point 535 is provided on the entire fifth side 531 from the fifth end to the sixth end. A fourth ground point 545 is disposed on the entire seventh side 541 from the seventh terminal to the eighth terminal.

The first side 511, the third side 521, the fifth side 531 and the seventh side 541 are disposed in parallel and aligned, and the areas where the first ground point 515, the second ground point 525, the third ground point 535 and the fourth ground point 545 are also disposed in aligned.

Referring to fig. 6, fig. 6 is a schematic diagram illustrating a third structure of an antenna assembly according to an embodiment of the present application.

In some embodiments, the first ground point 515 may be disposed partially proximate the first end and partially proximate the second end. The second ground point 525 may be disposed partially near the third end and partially near the fourth end. The third ground point 535 may be partially disposed near the fifth end and partially disposed near the sixth end. The fourth ground point 545 may be disposed partially near the seventh end and partially near the eighth end. That is, no grounding point is disposed on the middle region of the first side 511, the third side 521, the fifth side 531 and the seventh side 541.

Referring to fig. 7, fig. 7 is a fourth structural schematic diagram of an antenna assembly according to an embodiment of the present application.

In some embodiments, the first ground point 515 may be disposed distal to the first and second ends. A second ground point 525 may be provided remote from the third and fourth terminals. The third ground point 535 may be disposed away from the fifth and sixth ends. A fourth ground point 545 may be disposed away from the seventh and eighth ends. That is, grounding points corresponding to the first side 511, the third side 521, the fifth side 531 and the seventh side 541 are disposed on the middle region.

Referring to fig. 8, fig. 8 is a fifth structural schematic diagram of an antenna element according to an embodiment of the present application.

In some embodiments, the first ground point 515 may be disposed proximate to the first end or the second end. The second ground point 525 may be disposed near the third or fourth end. The third ground point 535 may be disposed near the fifth end or the sixth end. A fourth ground point 545 may be disposed near the seventh end or the eighth end. That is, grounding points corresponding to the first side 511, the third side 521, the fifth side 531, and the seventh side 541 are disposed at one end close to the sides.

It should be noted that, in the above embodiments, the areas where first ground point 515, second ground point 525, third ground point 535, and fourth ground point 545 are located are aligned. Wherein the first grounding point 515 and the second grounding point 525 are arranged in the same orientation, i.e. both towards the right. The third ground point 535 and the fourth ground point 545 are arranged in the same orientation, i.e. both towards the left. That is, first ground point 515 and second ground point 525 are disposed in an orientation opposite to an orientation in which third ground point 535 and fourth ground point 545 are disposed.

With continued reference to fig. 9, fig. 9 is a first schematic diagram of the dimensions of an antenna element provided by an embodiment of the present application.

As shown in fig. 9, the antenna assembly of fig. 9 is a conventional arrangement. The antenna T1 and the antenna T2 are two antennas on the same antenna radiator, with multiple ground points G1 disposed between the antenna T1 and the antenna T2. The antenna T3 and the antenna T4 are two antennas on the same antenna radiator, with multiple ground points G2 disposed between the antenna T3 and the antenna T4.

The antenna T1 and the antenna T3 radiate signals of the same frequency, the distance D1 between the edge a1 of the antenna T1 and the edge B1 of the antenna T3, and the transverse dimension of the entire antenna radiator of the antenna T3 and the antenna T4 is D2. The antenna module consisting of the antennas T1, T2, T3 and T4 has a transverse dimension of D1 plus D2.

Referring also to fig. 10, fig. 10 is a second schematic diagram illustrating dimensions of an antenna element according to an embodiment of the present disclosure.

The first antenna 510 and the third antenna 530 are used for transmitting radio frequency signals of the same frequency band. And the distance from the opposite side of the first side edge 511 to the opposite side of the fifth side edge 531 is L1, and the distance from the corresponding side of the fifth side edge 531 to the opposite side of the seventh side edge 541 is L2. L1 plus L2 are the transverse dimensions of the antenna assembly provided by the embodiments of the present application.

The length of L1 and the length of D1 can be considered to be the same, while the length of D2 is greater than the length of L2. That is, the lateral dimension of the antenna assembly provided by the embodiments of the present application is smaller than that of the conventional antenna assembly. That is, the antenna module that this application embodiment provided has a smaller size.

In some embodiments, it can also be understood that, in a conventional antenna assembly arrangement, the distance between two antennas is the distance between the geometric centers of the antennas. Whereas in this application the distance between the antennas is to be understood as the distance between the phase centers of the antennas. In the embodiment of the application, the phase center distance between the two antennas is smaller through the adjustment of the antenna form, so that the distance between the two antennas is also smaller, and finally the size of the antenna assembly is also smaller.

As shown in table 3, the Antenna form of fig. 7 and the Antenna form of fig. 8 are Planar Inverted F Antennas (PIFA). Wherein the antenna part of fig. 8 (w _ gnd ═ 1) is grounded and the length of the grounding area is 1 mm, and the antenna part of fig. 8 (w _ gnd ═ 2) is grounded and the length of the grounding area is 2 mm. The antenna in fig. 6 or fig. 7 (w _ gnd ═ 2) is partially grounded in the antenna in fig. 6 or fig. 7, and the length of the grounding region is 2 mm. Whereas the antenna of fig. 5 is a side-grounded antenna.

As can be seen from table 3, the antenna size is made smaller by adjusting the form of the antenna. In the antenna form of the antenna of fig. 8 (w _ gnd ═ 1), the antenna has a smaller size. Whereas the antenna form in fig. 9 corresponds to a larger antenna size. The antenna form provided in the embodiment of the application has smaller antenna size compared with the traditional antenna.

In some embodiments, in designing the antenna assembly, in addition to designing the form of the antenna so that the antenna has a smaller antenna size when radiating a certain radio frequency signal, the antenna assembly can also have a smaller size through selection of the dielectric substrate with a dielectric constant and design of the floor size.

TABLE 3

In some embodiments, by the first arrival phase difference between the first antenna 510 and the third antenna 530, the angle of the communication object transmitting the first ultra-wideband radio frequency signal can be measured by the angle measurement principle of the antennas. By a second phase difference of arrival between the second antenna 520 and the fourth antenna 540, the angle of the communication object transmitting the second ultra-wideband radio frequency signal can be measured. Therefore, the basic positioning of the communication object is realized, after the angle is measured, the position of the communication object emitting the ultra-wideband radio frequency signal in the three-dimensional space can be determined by changing the posture of the electronic equipment and measuring the angle and the distance between the antenna assembly and the communication object for multiple times, and the positioning of the electronic equipment on the communication object is realized.

Please refer to fig. 11, which is a graph illustrating a first arrival phase difference of an antenna assembly according to an embodiment of the present application.

Fig. 11 is a graph of Phase Difference of Arrival (PDOA) curves of the antenna assembly provided by the embodiments of the present application at an operating frequency of 6.5GHz, and it can be seen from fig. 11 that the slope of the curve C1 in the horizontal plane is larger, and the antenna assembly has better angle measurement performance in the horizontal plane. The slope of the curve C2 under the numerical plane is also larger, and the antenna assembly also has better angle measurement performance on the vertical plane.

Please refer to fig. 12, which is a second arrival phase difference graph of the antenna assembly according to the present embodiment.

Fig. 12 is a Phase Difference of Arrival (PDOA) diagram of the antenna assembly provided in the present embodiment at an operating frequency of 8GHz, and it can be seen from fig. 12 that the slope of the curve C3 in the horizontal plane is larger, and the antenna assembly has better angle measurement performance in the horizontal plane. The slope of the curve C4 under the numerical plane is also larger, and the antenna assembly also has better angle measurement performance on the vertical plane.

The antenna module that this application embodiment provided includes first antenna element, and first antenna element includes:

the antenna comprises a first antenna, a second antenna and a first feed structure. The first antenna comprises a first side edge and a second side edge which are adjacent, the first side edge of the first antenna is grounded, and a first feeding point is arranged on the second side edge of the first antenna; the second antenna comprises a third side edge and a fourth side edge which are adjacent, the third side edge of the second antenna is grounded, the third side edge of the second antenna is far away from the first side edge of the first antenna, the third side edge of the second antenna is parallel to the first side edge of the first antenna, and the fourth side edge of the second antenna is provided with a second feeding point; one end of the first feeding structure is connected with the first feeding point, and the other end of the first feeding structure is connected with the second feeding point, and the first feeding structure is used for feeding excitation signals into the first antenna and the second antenna so as to excite the first antenna to generate resonance of a first frequency band and excite the second antenna to generate resonance of a second frequency band. The antenna assembly has a small size, and meanwhile, the positioning of a communication object can be realized.

The above detailed description is provided for an antenna assembly and an electronic device provided in the embodiments of the present application, and specific examples are applied herein to explain the principles and embodiments of the present application, and the description of the above 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 assembly, comprising:

a first antenna element, the first antenna element comprising:

the second antenna comprises a third side edge and a fourth side edge which are adjacent, the third side edge of the second antenna is grounded, the third side edge of the second antenna is far away from the first side edge of the first antenna, the third side edge of the second antenna is parallel to the first side edge of the first antenna, and the fourth side edge of the second antenna is provided with a second feeding point; and

2. The antenna assembly of claim 1, further comprising a second antenna unit, the second antenna unit comprising:

the third antenna comprises a fifth side and a sixth side which are adjacent, the fifth side of the third antenna is grounded, and the sixth side of the third antenna is provided with a third feeding point;

the fourth antenna comprises a seventh side and an eighth side which are adjacent, the seventh side of the fourth antenna is grounded, the seventh side of the fourth antenna is far away from the fifth side of the third antenna, the seventh side of the fourth antenna is parallel to the fifth side of the third antenna, and the eighth side of the second antenna is provided with a second feeding point; and

and one end of the second feeding structure is connected with the third feeding point, and the other end of the second feeding structure is connected with the fourth feeding point, and the second feeding structure is used for feeding excitation signals into the third antenna and the fourth antenna so as to excite the third antenna to generate resonance of a first frequency band and excite the fourth antenna to generate resonance of a second frequency band.

3. The antenna assembly of claim 2, wherein the third side of the second antenna and the fifth side of the third antenna are oppositely disposed.

4. The antenna assembly of claim 3, wherein the first side of the first antenna, the third side of the second antenna, the fifth side of the third antenna, and the seventh side of the fourth antenna are disposed in parallel and aligned.

5. The antenna assembly of claim 4, wherein the first antenna comprises a plurality of first ground points disposed on the first lateral side;

the second antenna includes a plurality of second ground points disposed on the third side.

6. The antenna assembly of claim 5, wherein the first side of the first antenna comprises a first end and a second end disposed opposite one another, the first end being connected to the second side of the first antenna, the second end being connected to the side opposite the second side;

the third side of the second antenna comprises a third end and a fourth end which are arranged oppositely, the third end is connected with the fourth side, and the fourth end is connected with the side opposite to the fourth side.

7. The antenna assembly of claim 6, wherein the first plurality of ground points are disposed across the first side from the first end to the second end;

the second grounding point is arranged on the whole third side edge from the third end to the fourth end.

8. The antenna assembly according to claim 6, characterized in that the plurality of first ground points are provided on an area near the first end and/or the second end;

the plurality of second ground points are arranged on an area close to the third end and/or the fourth end.

9. The antenna assembly of claim 6, wherein the first plurality of ground points are disposed over an area remote from the first end and the second end;

the plurality of second ground points are disposed on an area remote from the third and fourth ends.

10. The antenna assembly of any one of claims 7-10, characterized in that the areas where the first ground point and the second ground point are located are arranged in alignment.

11. The antenna assembly of claim 10, wherein the third antenna comprises a plurality of third ground points disposed on the fifth lateral side;

the fourth antenna comprises a plurality of fourth ground points disposed on the seventh side;

and the areas where the first grounding point, the second grounding point, the third grounding point and the fourth grounding point are positioned are arranged in alignment.

12. An electronic device, characterized in that the electronic device comprises an antenna assembly according to any one of claims 1 to 11, the electronic device further comprising:

a processor electrically connected with the antenna assembly, the processor for controlling an operational state of the antenna assembly.