WO2020010941A1

WO2020010941A1 - Antenna and communication device

Info

Publication number: WO2020010941A1
Application number: PCT/CN2019/088821
Authority: WO
Inventors: 张鹏; 郭景丽; 张飞飞
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-07-13
Filing date: 2019-05-28
Publication date: 2020-01-16
Also published as: CN110718746A; CN110718746B

Abstract

Disclosed in an embodiment of the present application are an antenna and a communication device. The antenna of the embodiment of the present application comprises: a floor; and a radiation body, being provided on a side frame located on a side face of the floor and being connected to the floor in a feeding manner.

Description

Antenna and communication equipment

Cross-reference to related applications

This application is based on a Chinese patent application with an application number of 201810776915.X and an application date of July 13, 2018, and claims the priority of the Chinese patent application. The entire contents of this Chinese patent application are incorporated herein by reference.

Technical field

The present application relates to the field of wireless communication technology but is not limited to the field of wireless communication technology, and in particular, to an antenna and a communication device.

Background technique

The antenna is a necessary component in the field of wireless communication technology, and can be used for transmitting and receiving wireless signals. In the related art, the antennas can be divided into: single-input single-output (Single Input Single Output, SISO) antennas, and can also include: multiple input multiple output (Multiply Input Multiply Output (MIMO) antennas. The MIMO antenna can enhance the channel capacity, but in the prior art, because it is limited to the size of the terminal device, the antenna design is difficult or the designed antenna cannot meet the communication requirements.

Summary of the invention

In view of this, embodiments of the present application are expected to provide an antenna and a communication device.

The technical solution of this application is implemented as follows:

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

floor;

The radiator is disposed on a side frame on the side of the floor and is connected to the floor feed.

In a second aspect, an embodiment of the present invention provides a communication terminal, including the antenna provided by any one of the foregoing technical solutions.

In the antenna and the communication device provided in the embodiments of the present application, a side frame provided on the side of the floor is introduced into the antenna, and a space is provided for the radiator by using the side frame. In this way, the radiator is no longer limited to be directly installed on the surface of the floor, which increases radiation The installation space of the antenna reduces the problems that the antenna cannot be installed due to the small installation space of the radiator, the antenna installation is difficult, or the antenna performance is poor. On the other hand, if the radiator is arranged on the side frame, the space on the floor surface can be used to install other components, such as other antennas or electronic components, so that it does not occupy the surface area of the floor, and there is no need to increase the radiation of the antenna. The body increases the surface area of the floor, thereby miniaturizing communication equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of an antenna according to an embodiment of the present application;

2 is a schematic structural diagram of an antenna unit according to an embodiment of the present application;

3 is a schematic structural diagram of another antenna according to an embodiment of the present application;

FIG. 4 is a structure and an equivalent schematic diagram of an antenna unit and a neutral line provided in an embodiment of the present application; FIG.

5 is a schematic structural diagram of still another antenna according to an embodiment of the present application;

6 is a schematic structural diagram of still another antenna according to an embodiment of the present application;

7 is a schematic structural diagram of still another antenna according to an embodiment of the present application;

FIG. 8 is a schematic diagram of S parameters of antenna units in different frequency bands according to an embodiment of the present application; FIG.

FIG. 9 is a schematic diagram of an envelope correlation coefficient between different antenna units in each frequency band according to an embodiment of the present application; FIG.

FIG. 10 is a schematic diagram of antenna efficiency in each frequency band according to an embodiment of the present application; FIG.

11 is a radiation pattern of an antenna unit according to an embodiment of the present application;

FIG. 12 is a radiation pattern diagram of another antenna unit according to an embodiment of the present application.

detailed description

As shown in FIG. 1, an embodiment of the present application provides an antenna, including:

Floor 101;

The radiator 103 is disposed on a side frame 102 on the side of the floor 102 and is electrically connected to the floor 101.

In this embodiment, the floor 101 is a ground plate 101 for grounding the antenna.

In some embodiments, if the side frame 102 is a dedicated frame of the antenna, the side frame may belong to the antenna, and if the side frame 102 is a side frame of a communication device where the antenna is located, the The side frame may not belong to the antenna.

The floor 101 may include: a dielectric plate and a metal layer disposed on the dielectric plate; a side where the metal layer is located is a ground plane of the floor 101.

The radiator 103 may be a conductor for realizing radiation and reception of wireless signals through resonance. In this embodiment, the radiator 103 is electrically connected to the floor 101 as follows: The radiator 103 is connected to the ground plane of the floor 101. For example, the radiator 103 is connected to the floor 101 through a feeder. The feed line is a type of conductive line and can be used for conducting a current signal between the ground plane and the radiator 103.

In other embodiments, a short-circuit point is provided on the floor 101, and the short-circuit point may be a feeding point for feeding the radiator 103 to the ground plane.

In this embodiment, the antenna further includes a side frame 102 disposed on the side of the floor 101, and the side frame 102 may be disposed on one or more sides of the floor 101. For example, the side frame 102 may surround the Side frame 102 around the floor 101. The side frame 102 may be in contact with the floor 101 through an end portion, and may be in the middle portion in contact with the floor 101.

In this embodiment, the radiator 103 is disposed on the side frame 102 and is not directly disposed on the floor 101. In this way, the antenna in this embodiment does not occupy the area of the surface of the floor 101 and does not damage The structure of the floor 101 itself.

On the one hand, through the introduction of the side frame 102, the installation area of the radiator 103 is introduced, which reduces the problem that the radiator 103 cannot be installed because of the surface area of the floor 101 or the difficulty of setting the radiator 103, which greatly reduces the difficulty of antenna design. .

On the other hand, by introducing the side frame 102 and setting the radiator 103 on the side frame 102, the space position of the radiator 103 already installed on the surface of the floor 101 will not be occupied, and The interference of the radiator 103 on the surface is small, so the introduction of the side frame 102 on the one hand increases the installation area of the radiator 103, and the newly introduced radiator 103 can be set on the side frame 102, thereby reducing the newly introduced radiator. The antenna design problem caused by 103 is difficult. At the same time, because the installation area of the radiator 103 is increased, more radiators 103 can be introduced, so as to achieve more MIMO of the antenna unit 104 and achieve greater expansion.

Moreover, the radiator 103 is disposed on the side frame 102 through the setting of the side frame 102. Compared with the additional radiator 103 directly on the surface of the floor 101, the interference to the installed radiator 103 is small, and the newly introduced radiation is ensured. The wireless signal transmission and reception performance of the body 103 and the radiator 103 that was originally provided reduces the difficulty of ensuring the performance of each radiator 103, so the difficulty of antenna design and manufacturing is reduced again.

In some embodiments, the floor 101 is disposed in a first plane, and the side frame 102 is disposed in a second plane; the first plane is perpendicular to the first plane; it is worth noting that in this implementation In an example, the first plane and the second plane both refer to a plane set of a plurality of planes. In this way, the included angle between the floor 101 and the side frame 102 is 90 degrees.

In other embodiments, the included angle between the floor 101 and the side frame 102 can be 80 to 110 degrees. In this way, the radiator 103 disposed on the floor 101 and the radiator disposed on the edge of the floor 101 can be used. The included angle between 103 is sufficiently large, so that the degree of isolation is high enough to reduce the degree of mutual interference, and ensure the wireless signal transmission and reception performance of the antenna.

In some embodiments, the floor 101 divides the side frame 102 into a first part and a second part; if the part above the floor 101 is regarded as the first part in FIG. 1, the part below the floor 101 The part is the second part, and of course, the floor 101 and above may be the second part, and the floor 101 and below may be the first part.

The radiator 103 includes:

A first radiator 1031 is disposed in the first part and is configured to work in a first frequency band;

The second radiator 1032 is disposed on the second part and is capacitively coupled with the first radiator 1031 for working in a second frequency band, wherein the first frequency band is different from the second frequency band. A capacitor 1033 is shown in FIG. 2.

In this embodiment, the floor 101 divides the side frame 102 into two parts, for example, upper and lower parts. In some embodiments, the floor 101 divides the side frame 102 into two parts, that is, the first part and the second part are equal in width, or the floor 101 is symmetrically distributed as a symmetrical plane.

In this embodiment, the first radiator 1031 is disposed on the first portion, and the second radiator 1032 is disposed on the second portion, so that the interval setting between the two radiators 103 is achieved. The spaced arrangement of the two radiators 103 can realize the capacitive coupling of the two radiators 103. For example, a gap is provided between the first radiator 1031 and the second radiator 1032. In this way, two end surfaces of the gap formed by the gap and the side frame 102 are used to easily construct the first radiator 1031 and the second radiator 1032. Capacitive coupling. In some embodiments, the side frame 102 is formed of a dielectric plate. The first radiator 1031 and the second radiator 1032 are spaced apart from each other, and can be used as two capacitively coupled plates to form a capacitive coupling. In the embodiment, when the second radiator 1032 operates in the second frequency band, the first radiator 1031 provides a current for radiating wireless signals to the second radiator 1032 through current induction of an alternating electromagnetic field, or the second radiator 1032 will receive the current The wireless signal is converted into a current and conducted to the first radiator 1031 through an induction method, and the first radiator 1031 is conducted on the floor 101 through a feeder structure.

In this way, one antenna unit 104 includes two radiators 103, and the two radiators 103 can work in different frequency bands. For example, the first radiator 1031 works in the first frequency band, and the second radiator 1032 works in the second frequency band. In this way, the antenna can work in two frequency bands, which is an antenna with multiple working frequency bands, which can effectively enhance the antenna. Performance.

In some embodiments, the floor 101 divides the side frame into the first portion and the second portion along a thickness direction of the side frame.

In some embodiments, if the first part is an upper half, the second part is a lower half; or, if the first part is a lower half, the second part is an upper half. In short, the first part and the second part are divided into two parts with the floor 101 as a boundary. For example, the first portion and the second portion are divided into two symmetrical upper and lower portions by the floor 101. In other embodiments, the first part and the second part may also be two asymmetric parts. For example, the area of the first part is larger than the area of the second part, or the area of the second part is greater than The area of the first portion. The upper part here is that the part close to the front face of the communication device may be the upper part, and the lower part may be the part close to the back face of the electronic device. The front side here can be the side where the display is located.

In some embodiments, there may be only one feed connection between the first radiator 1031 and the second radiator 1032 connected to the floor 101, and then the two radiators 103 may be coupled by a capacitor 1033 to implement a current signal corresponding to the wireless signal. induction.

In some embodiments, the first radiator 1031 and the second radiator 1032 may both be a linear radiator 103 or a folded and folded radiator 103. By folding, a longer radiator 103 can be provided in a smaller area, thereby reducing the area of the side frame 102 to facilitate miniaturization of the antenna.

For example, in some embodiments, the first radiator 1031 is electrically connected to the floor 101 and is L-shaped. In the present embodiment, the first radiator 1031 is electrically connected to the floor 101. When the second radiator 1032 works in the second frequency band, the first radiator 1031 can be regarded as a feeder for feeding power between the second radiator 1032 and the floor 101. Thus, the second radiator 1032 is cleverly reused. As another radiator 103, the feeder line of the antenna increases an radiatable frequency band of the antenna; it has the characteristics of compact structure.

In this embodiment, the working frequency bands of the first radiator 1031 and the second radiator 1032 can both be the work of the fifth generation mobile communication (5G), and the first frequency band is: 3.4 to 3.6 Ghz; The second frequency band is: 4.8 to 5.1Ghz. It is worth noting that the first frequency band and the second frequency band are not limited to 5G frequency bands.

In some embodiments, the length of the first radiator 1031 is approximately equal to 1/4 of the wavelength corresponding to the center frequency of the first frequency band; the length of the second radiator 1032 is approximately equal to that of the first frequency band. 1/4 of the wavelength corresponding to the center frequency. Here approximately equal to 1/2 of the wavelength can be: between the first length and the second length; the first length is: the difference between the 1/4 of the wavelength and the allowable error value; the second length is: Sum of 1/4 and allowable error.

In some embodiments, as shown in FIG. 3, the side frame 102 includes:

First side border 1021;

A second side frame 1022, wherein the length of the first side frame 1021 is greater than the length of the second side frame 1022;

The radiator 103 is disposed on the first side frame 1021.

In this embodiment, the side frame 102 may include at least two, a first side frame 1021 and a second side frame 1022, and the two side frames 102 may be disposed adjacently. The first side frame 1021 may be a long side frame, and the second side frame 1022 may be a short side frame. In some embodiments, the side frame 102 is a rectangular side frame 102 or an approximately rectangular side frame, and then includes a set of relatively long side frames and a set of relatively short side frames.

In some embodiments, the antenna includes: at least two antenna elements 104;

The antenna unit 104 includes the radiator 103;

The antenna further includes:

The neutral line 105 is disposed between two adjacent antenna units 104.

In the embodiment of the present application, the antenna includes at least two antenna units 104, and one antenna unit 104 includes at least one of the radiators 103. For example, in some embodiments, one of the antenna units 104 includes the first antenna unit 104. The radiator 1031 and the second radiator 1032.

In this embodiment, in order to reduce mutual interference between the two antenna units 104, a neutral line 105 is also introduced. The introduction of the neutral line 105 can at least cancel the interference induced by mutual induction between the antenna units 104 to enhance a single The performance of the antenna unit 104.

And through the setting of the neutral line 105, compared with the sufficient spacing between the antenna units 104 to ensure the performance of a single antenna unit 104, the surface area of the side frame 102 can be reduced and the antenna structure can be made more compact, or the side frame 102 can be increased. The number of antenna units 104 that can be set.

Take FIG. 4 as an example for an exemplary description. An antenna unit 104 may be equivalent to a capacitive element (for example, a capacitor) with respect to its adjacent antenna unit 104; in this embodiment, a resistive element (for example, a resistive neutral line 105) is introduced to reduce two Mutual interference between two adjacent antenna units 104 enhances the isolation before the antenna unit 104.

In the embodiment of the present application, in order to simplify the setting of the neutral line 105, reduce the design difficulty of the neutral line 105, and improve the performance of a single antenna unit 104, the antenna structure of two adjacent antenna units 104 is the same, and The line 105 is distributed on the side frame 102 as an axis in a mirror image. If the two antenna units 104 are symmetrically distributed on both sides of the neutral line 105, then for the neutral line 105, it is only necessary to meet the interference cancellation requirements of one antenna unit 104, thereby greatly reducing the design and production of the antenna. Difficulty.

In some embodiments, the number of the antenna units 104 may be an even number, and may also be an odd number. In this embodiment, there are two first side frames 1021, and the first side frames 1021 are disposed on opposite sides of the floor 101; that is, the side frame 102 includes two oppositely disposed long side frames. There are 2N antenna units 104, where N is a positive integer; 2N antenna units 104 are symmetrically disposed on the two first side frames 1021. The number of antenna units 104 is also an even number. In this way, N antenna units 104 can be set on one first side frame 1021, and the N antenna units 104 are symmetrically arranged on the first side frame 1021 with the center line of the floor 101, On the one hand, interference can be reduced by symmetrically setting, and at the same time, after the antenna is applied to a communication terminal, the transmission and reception performance of wireless signals will not be affected due to the attitude of the terminal device.

In this embodiment, a communication terminal is further provided, including the antenna provided by the foregoing one or more technical solutions.

The communication terminal may be a human-mounted terminal such as a mobile phone, a tablet computer, or a wearable device, or may be a vehicle-mounted terminal or an Internet of Things terminal.

The communication terminal includes a casing, and the antenna is at least partially disposed in the casing. For example, the floor 101 is disposed in the casing. With the antenna provided in this embodiment, the terminal has the characteristics of good radiation performance of the antenna, and is beneficial to miniaturization of the device.

In some embodiments, the floor 101 may be a motherboard of the communication device. The main board may be a circuit board provided with a processor of a communication terminal. In this embodiment, since the introduction of the side frame 102 may not occupy the surface area of the main board, more space can be saved on the main board for setting other devices or existing antennas. For example, a 5G antenna is currently provided on the side frame 102 of the antenna. Here, the 5G antenna is an antenna whose working frequency band is a 5G frequency band. A space can be reserved on the edge of the motherboard for 3G antenna and / or 4G antenna setting. Therefore, this antenna structure has little influence on the structure inside the communication terminal.

Optionally, the side frame 102 is a side frame 102 of a housing of the communication terminal. For example, the communication terminal includes a casing, which includes a front surface for the screen, a back surface provided on the reverse side of the screen, and 4 sides connecting the front and back sides. The side of the casing can be used as the side frame 102 of the antenna. In this way, the side frame 102 of the communication terminal can be used cleverly to set the antenna, so that there is no need to introduce more components for setting the antenna, on the one hand, it is convenient to miniaturize the communication terminal, on the other hand, it can simplify the communication terminal, and at the same time ensure the antenna performance.

Several specific examples are provided below in combination with any of the above embodiments:

Example 1:

In order to enhance the practicality of the 5G terminal MIMO antenna, an antenna unit capable of satisfying both the frequency bands of 3.4 to 3.6 GHz and 4.8 to 5.1 GHz is designed, and its special implementation can be placed on the side of the terminal; secondly, in order to keep the floor Completeness, place the corresponding antenna array on the longer side frame of the terminal, and make the designed antenna as small as possible in order to increase the number of antenna units; meanwhile, in order to improve the isolation of the antenna units (that is, to reduce mutual interference between antenna units) ), A neutral line is added to the two adjacent units in the middle with poor isolation, and the equivalent circuit is further improved by analyzing its equivalent circuit. This example provides the following antenna.

The antenna may be a dual-band multi-unit MIMO antenna for a 5G smartphone, and includes a side frame surrounding the floor, an antenna unit, and a neutral line. A ground plane is provided on the bottom plate.

As shown in FIG. 5, the side frame surrounding the floor includes a short side frame 1, a short side frame 3, a long side frame 2, and a long side frame 4. The ground plane 5 is attached to the lower part of the floor plane 6 surrounded by the short-side frame 1, the short-side frame 3, the long-side frame 2, and the long-side frame 4. The floor plane 6 is the plane on which the largest surface of the floor is located.

Short side frame 1, short side frame 3, long side frame 2 and long side frame 4 are respectively divided into two upper and lower surfaces by the floor plane 6, namely the first half plane 7 and the second half plane 8 of the short side frame 1. The first half plane 9 and the second half plane 10 of the side frame 3; the first half plane 11 and the second half plane 12 of the long side frame 2.

As shown in FIG. 6 and FIG. 7, the dual radiator antenna unit includes a first radiator 13, a second radiator 14, and a capacitive coupling gap 17, respectively. The first radiator is disposed on the first half-plane and passes the first power supply. The portion 15 is directly fed; the second radiator is disposed on the second half-plane and is electrically connected to the ground plane 5 through the first short-circuit point 16; wherein the first radiator has an L-shaped folding structure, which is reduced to a certain extent The size of the radiator and the miniaturized antenna unit facilitate the integration of massive MIMO array antennas. When the first radiator of the antenna is fed by the first feeding unit, a low-frequency resonance is generated, and the second radiator of the antenna unit is coupled through the capacitive coupling gap to generate another resonance. The two radiators of the antenna unit Together they form the dual-frequency resonance of the antenna.

The dual radiator antenna unit here is the aforementioned antenna unit including two radiators.

The antenna units 18 and 19 are distributed along the long side frame 2. In order to enhance the isolation between the two antenna units, the distance between adjacent units should be about 1/4 wavelength of the operating frequency; in order to reduce the coupling between the antenna units Current, a neutral line 22 is connected between the antenna unit 19 and the second radiator portion of the antenna unit 20 (Ant3). The introduction of the neutral line makes the coupling currents generated by the two antennas cancel each other, thereby maintaining the antenna unit. Normal current distribution; after adding the neutral line 22, it can be known from the equivalent circuit topology of the array that the first radiator portion of the antenna unit 20 and a portion of the neutral line 22 form a series capacitor. In order to eliminate this series capacitor, Influence, to further reduce the coupling between the antennas, the antenna unit 18, the antenna unit 19 and the antenna unit 20, the antenna unit 21 are distributed in a mirror image, thereby improving the MIMO performance of the antenna.

Example 2:

A dual-band eight-unit MIMO antenna for a 5G smartphone includes a side frame surrounding the floor, a ground plane, an antenna unit, and a neutral line. The side frame surrounding the floor includes a short side frame 1, a short side frame 3, a long side frame 2 and a long side frame 4. The ground plane 5 is attached to the lower part of the floor plane 6 surrounded by the short-side frame 1, the short-side frame 3, the long-side frame 2, and the long-side frame 4. Short side frame 1, short side frame 3, long side frame 2 and long side frame 4 are respectively divided into two upper and lower surfaces by the floor plane 6, namely the first half plane 7 and the second half plane 8 of the short side frame 1. The first half plane 9 and the second half plane 10 of the side frame 3; the first half plane 11 and the second half plane 12 of the long side frame 2. The dual radiator antenna unit includes a first radiator 13, a second radiator 14, and a capacitive coupling gap 17. The first radiator is disposed on the first half-plane and is directly fed by the first feeding unit 15. The capacitive coupling gap The thickness of the floor plane 6 is about 0.6 to 1 mm; the second radiator is disposed on the second half plane and is electrically connected to the ground plane 5 through the first short-circuit point 16; wherein the first radiator has an L-shaped folding structure To some extent, the size of the radiator is reduced. When the first radiator of the antenna is fed by the first feeder, a low-frequency resonance is generated, the length of which is equivalent to a quarter wavelength of the first resonance frequency, about 20 to 23 mm; the second radiation of the antenna unit The body works through capacitive coupling gap coupling. In order to reduce the size, the structure is bent into a coupling ring. Its length is equivalent to a quarter wavelength of two resonance frequencies, about 12 to 16 mm, thereby generating another resonance. The antenna unit These two radiators together form the dual-frequency resonance of the antenna.

The antenna units 18 and 19 are distributed along the long side frame 2. In order to enhance the isolation between the two antenna units, the distance between adjacent units should be about 1/4 wavelength of the operating frequency; in order to reduce the coupling between the antenna units Current, a neutral line 22 is connected between the antenna unit 19 and the second radiator portion of the antenna unit 20. The introduction of the neutral line makes the coupling currents generated by the two antennas cancel each other, thereby maintaining the normal current on the antenna unit. After adding the neutral line 22, it can be known from the equivalent circuit topology of the array that the first radiator portion of the antenna unit 20 and a portion of the neutral line 22 form a series capacitor. In order to eliminate the effect of this series capacitor, Ground to reduce the coupling between the antennas, the antenna unit 18, the antenna unit 19 and the antenna unit 20, the antenna unit 21 are distributed in a mirror image, thereby improving the MIMO performance of the antenna.

Since the design of the antenna unit itself has a small electrical size, the 8-unit MIMO array in this embodiment is compact in structure and is arranged on the upper half of the side frame of the terminal, which is helpful to reduce the impact of human hands on the performance of the entire MIMO array. ; When designing, the method of sacrificing the electrical size of the radiator can be used to reduce the thickness of the side frame of the terminal. What needs to be explained here is that by simply adjusting the corresponding electrical sizes of the first radiator 13 and the second radiator 14, this design example can also support the work in the remaining 5G to 6GHz frequency bands. In addition, this embodiment is a MIMO array with eight antenna elements, but the number of antenna elements in the present application includes, but is not limited to, a four-element array as shown in FIG. 6.

Referring to FIG. 8, with the S parameter less than 6 dB as a standard, the impedance bandwidth of the antenna in the embodiment is 3.4 to 3.6 GHz and 4.8 to 5.1 GHz, and the relative bandwidths thereof are 5.71% and 6.10% respectively; Port isolation is greater than 11dB. The S parameter may include: Voltage Standing Wave Ratio (VSWR).

Referring to FIG. 9, the envelope correlation coefficient between each antenna unit is less than 0.08, which is far less than the industry's lowest standard of 0.5. In FIG. 10, the envelope correlation coefficients of the

antenna elements

1 and 2, the

antenna elements

2 and 3, the

antenna elements

3 and 4, and the

antenna elements

1 and 5 are shown. Referring to FIG. 10, the envelope correlation coefficient between each antenna unit is less than 0.08, which is far less than the industry's lowest standard of 0.5.

The measurement results in FIG. 10 show that the structure can work in two frequency bands, 3.4 to 3.6 GHz and 4.8 to 5.1 GHz. In Fig. 10, the horizontal axis is the frequency and the vertical axis is the efficiency. As can be seen from Fig. 10, the efficiency in the frequency bands 3.4 to 3.6 GHz and 4.8 to 5.1 GHz is very high. The reception is good.

11 and 12 are radiation azimuth diagrams of the antenna.

Antenna efficiency measured in free space for design example. The results show that in free space, the efficiency of each antenna in the operating frequency band is greater than 40%.

The above simulation and measurement results show that the MIMO antenna array of the present application has a relatively ideal impedance bandwidth and good isolation to meet the needs of communication.

In one example, an antenna provided in this example includes a floor, and a side frame on the side of the floor; a radiator is provided on the floor, and a radiator is also provided on the side frame. If the plane on which the floor is located is the XOY plane, the plane on which the side frame is located may include ZOY. FIG. 11 and FIG. 12 are plots of radiation azimuth diagrams for different detection results of such a downline. As can be seen from Figs. 11 and 12, whether the antenna corresponding to the radiator in the XOY plane or the antenna corresponding to the radiator in the ZOY plane has good antenna efficiency at different angles and a detectable average antenna The efficiency is not less than 40%.

As can be seen from FIG. 11 and FIG. 12, when the radiators of the antenna are provided on the floor and the side frames on the side of the floor, different radiation directions have better antenna efficiency.

In the several embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. In actual implementation, there may be another division manner, such as multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed components are coupled, or directly coupled, or communicated with each other through some interfaces. The indirect coupling or communications of the device or unit may be electrical, mechanical, or other forms. of.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, which may be located in one place or distributed to multiple network units. ; Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing module, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above integration The unit can be implemented in the form of hardware, or in the form of hardware plus software functional units.

Those of ordinary skill in the art may understand that all or part of the steps of implementing the foregoing method embodiments may be completed by a program instructing related hardware. The foregoing program may be stored in a computer-readable storage medium. When the program is executed, the program is executed. Including the steps of the above method embodiment; and the foregoing storage medium includes: a mobile storage device, a read-only memory (ROM, Read to Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disk A medium on which program code can be stored.

The above is only a specific implementation of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

An antenna includes:

floor;

The radiator is disposed on a side frame on the side of the floor and is connected to the floor for power feeding.
The antenna according to claim 1, wherein:

The floor divides the side frame into a first part and a second part;

The radiator includes:

A first radiator, disposed on the first part, for working in a first frequency band;

A second radiator is disposed on the second part and is capacitively coupled to the first radiator for working in a second frequency band, wherein the first frequency band is different from the second frequency band.
The antenna according to claim 2, wherein the floor divides the side frame into the first portion and the second portion in a thickness direction of the side frame.
The antenna according to claim 2, wherein:

The first radiator is electrically connected to the floor and is L-shaped.
The antenna according to claim 2, wherein:

The first frequency band is: 3.4 to 3.6 Ghz;

The second frequency band is: 4.8 to 5.1 Ghz.
The antenna according to claim 1 or 2, wherein:

The side frame includes:

First side border

A second side frame, wherein a length of the first side frame is greater than a length of the second side frame;

The radiator is disposed on the first side frame.
The antenna according to claim 1 or 2, wherein:

The antenna includes: at least two antenna units;

The antenna unit includes the radiator;

The antenna further includes:

The neutral line is disposed between two adjacent antenna units.
The antenna according to claim 7, wherein:

The antenna structures of two adjacent antenna units are the same and are distributed on the side frame in a mirror image with the neutral line as an axis.
The antenna according to claim 7, wherein:

The side frame includes: two first side frames;

The two first side frames are disposed on opposite sides of the floor;

There are 2N antenna units, where N is a positive integer;

2N antenna units are symmetrically disposed on two of the first side frames.
A communication terminal, comprising: the antenna according to any one of claims 1 to 9.
The communication terminal according to claim 10, wherein:

The side frame is a side frame of the casing of the communication terminal.
The communication terminal according to claim 10 or 11, wherein:

The floor of the antenna is the main board of the communication terminal.