CN110718746B

CN110718746B - Antenna and communication device

Info

Publication number: CN110718746B
Application number: CN201810776915.XA
Authority: CN
Inventors: 张鹏; 郭景丽; 张飞飞
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-07-13
Filing date: 2018-07-13
Publication date: 2023-09-01
Anticipated expiration: 2038-07-13
Also published as: CN110718746A; WO2020010941A1

Abstract

The embodiment of the application discloses an antenna and communication equipment. The antenna provided by the embodiment of the application comprises: a floor; the radiator is arranged on the side frame positioned on the side face of the floor and is connected with the floor power feed.

Description

Antenna and communication device

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to an antenna and a communication device.

Background

The antenna is an essential component in the technical field of wireless communication, and can be used for receiving and transmitting wireless signals. In the related art, the antenna may be divided into the following types: a single input single output (Single Input Single Output, SISO) antenna, further comprising: multiple-input multiple-output (Multiply Input Multiply Output, MIMO) antennas. MIMO antennas can enhance channel capacity, but in the prior art, due to the limitation to the size of the terminal device, the antenna design difficulty is high or the designed antenna cannot meet the communication requirement.

Disclosure of Invention

In view of the foregoing, it is desirable to provide an antenna and a communication device.

The technical scheme of the application is realized as follows:

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

a floor;

the radiator is arranged on the side frame positioned on the side face of the floor and is connected with the floor power feed.

Optionally, the floor separates the side frame into a first portion and a second portion;

the radiator includes:

the first radiator is arranged on the first part and is used for working in a first frequency band;

and the second radiator is arranged on the second part, is capacitively coupled with the first radiator and is used for working in a second frequency band, wherein the first frequency band is different from the second frequency band.

Optionally, the floor panel separates the side frame into the first portion and the second portion along a thickness direction of the side frame.

Optionally, the first radiator is connected with the floor feed and is L-shaped.

Optionally, the first frequency band is: 3.4 to 3.6Ghz;

the second frequency band is: 4.8 to 5.1Ghz.

Optionally, the side frame includes:

a first side frame;

the length of the first side frame is greater than that of the second side frame;

the radiator is arranged on the first side frame.

Optionally, the antenna includes: at least two antenna elements;

the antenna unit includes the radiator;

the antenna further comprises:

and the neutralization line is arranged between two adjacent antenna units.

Optionally, the antenna structures of two adjacent antenna units are identical, and the neutralization line 105 is used as an axis mirror image to be distributed on the side frame.

Optionally, the side frame includes: two first side frames;

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

the number of the antenna units is 2N, wherein N is a positive integer;

the 2N antenna units are symmetrically arranged on the two first side frames.

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

Optionally, the side frame is a side frame of a housing of the communication terminal.

Optionally, the floor of the antenna is a motherboard of the communication terminal.

According to the antenna and the communication equipment provided by the embodiment of the application, the side frame arranged on the side surface of the floor is introduced into the antenna, and the space for arranging the radiator is provided by utilizing the side frame, so that the radiator is not limited to be directly arranged on the surface of the floor, the arrangement space of the radiator is increased, and the problems that the antenna cannot be arranged, the antenna arrangement difficulty is high or the performance of the arranged antenna is poor due to the small arrangement space of the radiator are solved. On the other hand, if the radiator is disposed on the side frame, the space on the surface of the floor may be used for disposing other components, such as other antennas or electronic components, so that the surface area of the floor is not occupied, and the surface area of the floor is not increased for adding the radiator of the antenna, thereby facilitating miniaturization of the communication device.

Drawings

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

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

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

fig. 4 is a schematic diagram of the structure and equivalent of an antenna unit and a neutralization line according to an embodiment of the present application;

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

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

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

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

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

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 of another antenna unit according to an embodiment of the present application.

Detailed Description

The technical scheme of the application is further elaborated below by referring to the drawings in the specification and the specific embodiments.

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

a floor 101;

the radiator 103 is disposed on the side frame 102 located at the side of the floor board 102, and is connected to the floor board 101 in a feeding manner.

The ground plate 101 in this embodiment is a ground plate 101 for antenna grounding.

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 in which the antenna is located, the side frame may not belong to the antenna.

The floor 101 may include: a dielectric plate and a metal layer arranged on the dielectric plate; the surface of the metal layer is the ground plane of the floor 101. The radiator 103 may be a conductor for enabling radiation and reception of wireless signals by resonance. In this embodiment, the radiator 103 is connected to the floor 101 in a feeding manner: the radiator 103 is connected to the ground plane of the floor 101. For example, the radiator 103 is connected to the floor 101 by a feed line. The feed line is one of the conductive lines that can be used for conducting current signals between the ground plane and the radiator 103. In other embodiments, a short-circuit point is provided on the floor 101, which may be a feeding point for the radiator 103 to feed to the ground plane.

In this embodiment, the antenna further includes a side frame 102 disposed on a 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 be a side frame 102 surrounding the floor 101. The side frames 102 may be in contact with the floor panel 101 through end portions, or may be in contact with the floor panel 101 through intermediate portions.

In this embodiment, the radiator 103 is disposed on the side frame 102, not directly disposed on the floor 101, so that the antenna in this embodiment does not occupy the surface area of the floor 101 and does not destroy the structure of the floor 101 itself. On the one hand, the arrangement area of the radiator 103 is introduced through the introduction of the side frame 102, so that the problem that the radiator 103 cannot be arranged on the surface area of the floor 101 or the arrangement difficulty of the radiator 103 is high is solved, and the antenna design difficulty is greatly reduced. On the other hand, by introducing the side frame 102 and arranging the radiator 103 on the side frame 102, the space position of the radiator 103 already arranged on the surface of the floor 101 is not occupied, and the interference to the radiator 103 already arranged on the surface of the floor 101 is small, so by introducing the side frame 102, the arrangement area of the radiator 103 is increased, the newly introduced radiator 103 can be arranged on the side frame 102, thereby reducing the problem of high antenna design difficulty caused by the newly introduced radiator 103, simultaneously, more radiators 103 can be introduced due to the increased arrangement area of the radiator 103, thereby realizing the MIMO of more antenna units 104, realizing larger expansion, and by arranging the side frame 102, the radiator 103 is arranged on the side frame 102, the interference to the arranged radiator 103 is small compared with the case that the radiator 103 is additionally arranged on the surface of the floor 101, the newly introduced radiator 103 and the wireless signal receiving and transmitting performances of the originally arranged radiator 103 are ensured, the difficulty of manufacturing the performance of each radiator 103 is increased is reduced, and the antenna design is realized again.

In some embodiments, the floor 101 is disposed in a first plane and the side frames 102 are disposed in a second plane; the first plane is perpendicular to the first plane; it is noted that, in this embodiment, the first plane and the second plane refer to a plane set of a plurality of planes. Thus, the included angle between the floor 101 and the side frame 102 is 90 degrees; in other embodiments, the angle between the floor 101 and the side frame 102 may be between 80 and 110 degrees, so that the angle between the radiator 103 disposed on the floor 101 and the radiator 103 disposed at the edge of the floor 101 is large enough, so that the isolation degree is high enough, the degree of mutual interference is reduced, and the transceiver performance of the wireless signal of the antenna is ensured.

Optionally, the floor 101 separates the side frame 102 into a first portion and a second portion; in fig. 1, when the portion above the floor 101 is regarded as the first portion, the portion below the floor 101 may be the second portion, or the portion above the floor 101 may be the second portion, and the portion below the floor 101 may be the first portion.

The radiator 103 includes:

the first radiator 1031 is disposed at the first portion and is configured to operate in a first frequency band;

and a second radiator 1032 disposed at the second portion and capacitively coupled to the first radiator 1031 for operating in a second frequency band, wherein the first frequency band is different from the second frequency band. A capacitance 1033 is shown in fig. 2.

In this embodiment, the floor board 101 divides the side frame 102 into two parts, for example, an upper part and a lower part. In some embodiments, the floor panel 101 bisects the side frame 102 into two parts, i.e., the first and second parts are wider, or symmetrically distributed with the floor panel 101 as a plane of symmetry.

In the present embodiment, the first radiator 1031 is disposed on the first portion, and the second radiator 1032 is disposed on the second portion, thereby realizing the interval arrangement between the two radiators 103. The spaced arrangement of the two radiators 103 may enable capacitive coupling of the two radiators 103. For example, a gap is formed between the first radiator 1031 and the second radiator 1032, and thus, capacitive coupling between the first radiator 1031 and the second radiator 1032 is simply constructed by using both end surfaces of the gap and the side frames 102 to form the gap. In some embodiments, the side frame 102 is formed by dielectric plates, the first radiator 1031 and the second radiator 1032 are disposed at intervals, and can be used as two plates of capacitive coupling to form capacitive coupling, in some embodiments, when the second radiator 1032 works in the second frequency band, the first radiator 1031 provides the current for radiating the wireless signal to the second radiator 1032 through current induction of the alternating electromagnetic field, or the second radiator 1032 converts the received wireless signal into the current and transmits the current to the first radiator 1031 through induction, and the first radiator 1031 transmits the current to the floor 101 through the feeder line structure.

Thus, one antenna unit 104 comprises two radiators 103, which two radiators 103 can operate in different frequency bands. For example, the first radiator 1031 operates in a first frequency band and the second radiator 1032 operates in a second frequency band, so that the antenna can operate in two frequency bands and is an antenna with multiple operation frequency bands, thereby effectively enhancing the performance of the antenna.

Alternatively, the floor panel 101 partitions the side frames into the first portion and the second portion in the thickness direction of the side frames.

In some embodiments, if the first portion is the upper half, the second portion is the lower half; alternatively, if the first portion is the lower half, the second portion is the upper half. In summary, the first portion and the second portion are divided into two portions bounded by the floor 101. For example, the first portion and the second portion are divided into two symmetrical upper and lower portions by the floor panel 101. In other embodiments, the first portion and the second portion may also be two asymmetric portions, e.g., the first portion has an area greater than the second portion or the second portion has an area greater than the first portion. The upper half may be a portion near the front of the communication device, and the lower half may be a portion near the back of the electronic device. The front surface here may be the surface on which the display screen is located.

In some embodiments, only one of the first radiator 1031 and the second radiator 1032 may be in feed connection with the floor 101, and then the two radiators 103 are coupled through the capacitor 1033 to achieve sensing of a current signal corresponding to the wireless signal.

In some embodiments, the first radiator 1031 and the second radiator 1032 can be both linear type radiators 103 and folded radiators 103. The longer radiator 103 can be provided in a smaller area by folding, 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. The first radiator 1031 is in this embodiment in feed connection with the floor 101. When the second radiator 1032 works in the second frequency band, the first radiator 1031 can be regarded as a feeder line for feeding between the second radiator 1032 and the floor 101, so that the feeder line of the second radiator 1032 is skillfully multiplexed as the other radiator 103, and a radiation frequency band of the antenna is increased; has the characteristic of exquisite structure.

In this embodiment, the working frequency bands of the first radiator 1031 and the second radiator 1032 may be the fifth generation mobile communication (5G) operation, and the first frequency band is: 3.4 to 3.6Ghz; the second frequency band is: 4.8 to 5.1Ghz. Notably, are: 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 1/4 of the wavelength corresponding to the center frequency of the first frequency band. Here approximately equal to 1/2 of the wavelength may be: the first length is between the second length; the first length is: 1/4 of the wavelength and the allowable error value; the second length is: 1/4 of the wavelength and the allowed error.

Optionally, as shown in fig. 3, the side frame 102 includes:

a first side frame 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.

The side frames 102 may include at least two side frames 1021 and 1022, and the two side frames 102 may be disposed adjacent to each other. 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 frames 102 are rectangular side frames 102 or approximately rectangular side frames, and include a set of oppositely disposed long side frames and a set of oppositely disposed short side frames.

Optionally, the antenna includes: at least two antenna elements 104;

the antenna unit 104 includes the radiator 103;

the antenna further comprises:

the neutralization line 105 is disposed between two adjacent antenna units 104.

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

In this embodiment, in order to reduce mutual interference between two antenna units 104, a neutralizing line 105 is further introduced, and the introduction of the neutralizing line 105 can at least offset interference generated by mutual induction between part of the antenna units 104, so as to improve performance of a single antenna unit 104.

And by providing the neutralizing line 105, the surface area of the side frame 102 can be reduced and the antenna structure can be made more compact, or the number of antenna elements 104 that can be provided on the side frame 102 can be increased, relative to ensuring the performance of a single antenna element 104 by a sufficient spacing between the antenna elements 104.

An exemplary illustration is given by way of example in fig. 4. One antenna element 104 may correspond to a capacitive element (e.g., a capacitor) with respect to its neighboring antenna elements 104; the introduction of a resistive element (e.g., a resistive neutralizing line 105) in this embodiment reduces the mutual interference between two adjacent antenna elements 104, enhancing the isolation before the antenna elements 104.

In the embodiment of the present application, in order to simplify the setting of the neutralization line 105, reduce the design difficulty of the neutralization line 105, improve the performance of a single antenna unit 104, and have the same antenna structure of two adjacent antenna units 104, and are distributed on the side frame 102 in a mirror image manner with the neutralization line 105 as an axis. If the two antenna units 104 are symmetrically distributed on two sides of the neutralization line 105, the neutralization line 105 only needs to meet the requirement of eliminating interference of one antenna unit 104, so that the difficulty of designing and manufacturing the antenna can be greatly reduced.

In some embodiments, the number of the antenna units 104 may be even or odd. In this embodiment, the number of the first side frames 1021 is two, and the first side frames 1021 are disposed on opposite sides of the floor 101; i.e., the side frame 102 includes two oppositely disposed long side frames. The number of the antenna units 104 is 2N, where N is a positive integer; the 2N antenna units 104 are symmetrically disposed on the two first side frames 1021. The number of the antenna units 104 is also even, so that one first side frame 1021 can be provided with N antenna units 104, and the N antenna units 104 are symmetrically arranged on the first side frame 1021 by the central line of the floor 101, so that on one hand, the interference can be reduced by the symmetrical arrangement, and meanwhile, after the antenna is applied to a communication terminal, the receiving and transmitting performance of wireless signals cannot be influenced by the gesture problem of the terminal equipment.

There is also provided in this embodiment a communication terminal including: the antenna provided by one or more of the foregoing claims.

The communication terminal can be a mobile phone, a tablet personal computer, or a personal terminal such as a wearable device, and can also be a vehicle-mounted terminal or an Internet of things terminal.

The communication terminal comprises a housing, wherein the antenna is at least partially arranged in the housing, e.g. the floor 101 is arranged in the housing. By adopting the antenna provided by the embodiment, the terminal has the characteristics of good radiation performance and the like, and is beneficial to realizing the miniaturization of equipment.

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 the communication terminal. In this embodiment, since the side frame 102 may not occupy the surface area of the motherboard, more space on the motherboard may be saved for other devices or existing antennas. For example, a 5G antenna is currently disposed on the side frame 102 of the antenna, where the 5G antenna is an antenna with an operating frequency band of 5G. Intervals can be reserved on the edge of the main board for the 3G antenna and/or the 4G antenna to be arranged. The 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 housing including a front surface for a screen to be set, a back surface to be set on the back surface of the screen, and 4 side surfaces connecting the front surface and the back surface, the side surfaces of the housing can be used as the side frames 102 of the antenna, so that the antenna can be set by skillfully using the side frames 102 of the communication terminal, thereby not introducing more components for setting the antenna, on the one hand, miniaturization of the communication terminal is facilitated, on the other hand, the communication terminal can be simplified, and at the same time, the antenna performance is ensured.

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

example 1:

in order to enhance the practicability of the MIMO antenna of the 5G terminal, an antenna unit capable of simultaneously meeting two frequency bands of 3.4-3.6 GHz and 4.8-5.1 GHz is designed, and the special implementation mode of the antenna unit can be placed at the side edge of the terminal; secondly, in order to keep the integrity of the floor, the corresponding antenna array is placed on a longer side frame of the terminal, and the designed antenna is as small as possible, so that the number of antenna units is increased; meanwhile, in order to improve the isolation of the antenna units (namely, reduce mutual interference among the antenna units), a neutralization line is added to two adjacent units in the middle of the isolation difference, and the isolation is further improved by analyzing an equivalent circuit of the neutralization line and adopting a mirror image placement mode, and the example provides the following antenna.

The antenna may be a dual frequency multi-element MIMO antenna for a 5G smartphone comprising: the side frame surrounding the floor, the antenna unit and the neutralization line. The bottom plate is provided with a grounding surface.

As shown in fig. 5, the side frame surrounding the floor includes: short side frame 1, short side frame 3, long side frame 2 and long side frame 4. The ground plane 5 is attached to the lower part of the floor plane 6 enclosed by the short side frames 1, 3, 2 and 4. The floor plane 6 is the plane in which the largest surface of the floor lies.

The short side frame 1, the short side frame 3, the long side frame 2 and the long side frame 4 are respectively divided into an upper surface and a lower surface by a floor plane 6, namely a first half plane 7 and a second half plane 8 of the short side frame 1; a first half-plane 9, a second half-plane 10 of the short 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 7, the dual radiator antenna unit includes a first radiator 13, a second radiator 14, and a capacitive coupling gap 17, wherein the first radiator is disposed on a first half plane and is directly fed through a first feeding portion 15; the second radiator is arranged on the second half plane and is electrically connected to the ground plane 5 through the first short-circuit point 16; the first radiator is provided with an L-shaped folding structure, the size of the radiator is reduced to a certain extent, and the miniaturized antenna unit is convenient for the integration of the large-scale MIMO array antenna. When the first radiator of the antenna is fed by the first feed, a low-frequency resonance is generated, the second radiator of the antenna unit works through capacitive coupling gap coupling, so that another resonance is generated, and the two radiators of the antenna unit jointly form the double-frequency resonance of the antenna.

The dual radiator antenna unit herein is the aforementioned antenna unit comprising two radiators.

The antenna units 18 and 19 are arranged along the long side frame 2 in a collinear manner, and the distance between adjacent units is about 1/4 wavelength of the working frequency in order to enhance the isolation of the two antenna units; in order to reduce the coupling current between the antenna elements, a neutralization line 22 is connected between the antenna element 19 and the second radiator portion of the antenna element 20 (Ant 3), and the introduction of the neutralization line causes the coupling currents generated by the two antennas to cancel each other, so that the normal current distribution on the antenna elements can be maintained; after the neutralizing line 22 is added, as known from the equivalent circuit topology of the array, the first radiator portion of the antenna unit 20 and a portion of the neutralizing line 22 form a series capacitor, so as to further reduce the coupling between antennas by eliminating the influence of the series capacitor, and the antenna units 18, 19, 20, and 21 are mirror-distributed, thereby improving the MIMO performance of the antennas.

Example 2:

a dual frequency eight element MIMO antenna for a 5G smartphone, comprising: the side frame surrounding the floor, the ground plane, the antenna unit and the neutralization line. The side frame surrounding the floor comprises: short side frame 1, short side frame 3, long side frame 2 and long side frame 4. The ground plane 5 is attached to the lower part of the floor plane 6 enclosed by the short side frames 1, 3, 2 and 4. The short side frame 1, the short side frame 3, the long side frame 2 and the long side frame 4 are respectively divided into an upper surface and a lower surface by a floor plane 6, namely a first half plane 7 and a second half plane 8 of the short side frame 1; a first half-plane 9, a second half-plane 10 of the short 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 comprises a first radiator 13, a second radiator 14 and a capacitive coupling gap 17, wherein the first radiator is arranged on a first half plane and directly fed through a first feed part 15, and the capacitive coupling gap is the thickness of the floor plane 6 and is about 0.6 to 1 mm; the second radiator is arranged on the second half plane and is electrically connected to the ground plane 5 through the first short-circuit point 16; the first radiator has an L-shaped folding structure, so that the size of the radiator is reduced to a certain extent. When the first radiator of the antenna is fed by the first feed, a low frequency resonance is generated, the length of which corresponds to a quarter wavelength of the first resonance frequency, about 20 to 23mm; the second radiator of the antenna element is operated by capacitive coupling gap coupling, and for the purpose of reducing the size, is folded into a coupling loop structure having a length corresponding to a quarter wavelength of the two resonant frequencies, about 12 to 16mm, so as to generate another resonance, the two radiators of the antenna element together constituting a dual-frequency resonance of the antenna.

The antenna units 18 and 19 are arranged along the long side frame 2 in a collinear manner, and the distance between adjacent units is about 1/4 wavelength of the working frequency in order to enhance the isolation of the two antenna units; in order to reduce the coupling current between the antenna elements, a neutralizing wire 22 is connected between the antenna element 19 and the second radiator portion of the antenna element 20, and the introduction of the neutralizing wire counteracts the coupling current generated by the two antennas, so that the normal current distribution on the antenna elements can be maintained; after the neutralizing line 22 is added, as known from the equivalent circuit topology of the array, the first radiator portion of the antenna unit 20 and a portion of the neutralizing line 22 form a series capacitor, so as to further reduce the coupling between antennas by eliminating the influence of the series capacitor, and the antenna units 18, 19, 20, and 21 are mirror-distributed, thereby improving the MIMO performance of the antennas.

Because the antenna unit has smaller electric size, the 8-unit MIMO array in the embodiment has compact structure and is arranged on the upper half part of the side frame of the terminal, thereby being beneficial to reducing the performance influence of hands on the whole MIMO array; in design, the thickness of the side frame of the terminal can be reduced by adopting a method of sacrificing the electrical size of the radiator. It should be noted here that, by simply adjusting the corresponding electrical dimensions of the first radiator 13 and the second radiator 14, the present design example can also support the operation of the remaining 5G sub to 6GHz frequency bands. In addition, the present embodiment is a MIMO array with 8 antenna units, but the number of antenna units of the present application includes, but is not limited to, 8, and a quad array is shown in fig. 6.

Referring to fig. 8, the impedance bandwidths of the antenna in the embodiment are 3.4 to 3.6GHz and 4.8 to 5.1GHz, respectively, and the relative bandwidths thereof are 5.71% and 6.10%, respectively, based on the S parameter being less than to 6 dB; the isolation of each port of the antenna in embodiment 1 is greater than 11dB. The S parameters may include: voltage standing wave ratio (Voltage Standing Wave Ratio, VSWR).

Referring to fig. 9, the envelope correlation coefficient between the individual antenna elements is less than 0.08, which is much less than the industry's minimum standard of 0.5. In fig. 10, the envelope correlation coefficients of the antenna elements 1, 2, 3, 4 and 1, 5 are shown. Referring to fig. 10, the envelope correlation coefficient between the individual antenna elements is less than 0.08, which is much less than the industry's minimum standard of 0.5.

The measurement results of fig. 10 illustrate that the present structure can operate in two frequency bands, 3.4 to 3.6GHz and 4.8 to 5.1GHz. In fig. 10, the horizontal axis represents frequency and the vertical axis represents efficiency, and it can be seen from fig. 10 that the efficiency in the frequency bands of 3.4 to 3.6GHz and 4.8 to 5.1GHz is high, so that the radiation efficiency and the receiving effect of the antenna in the two frequency bands are good.

Fig. 11 and 12 are radiation pattern diagrams of the antenna.

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

The simulation and measurement results show that the MIMO antenna array has ideal impedance bandwidth and good isolation, and meets the communication requirement.

In one example, the present example provides an antenna comprising a floor, a side frame of a side of the floor; the radiator is arranged on the floor and the radiator is also arranged on the side frame. If the floor is in the XOY plane, the side frame plane may include ZOY. Fig. 11 and 12 are plots of radiation pattern diagrams for different detection results of such an astronomical line. As can be seen from fig. 11 and 12, the antenna corresponding to the radiator in the XOY plane or the antenna corresponding to the radiator in the ZOY plane has a good antenna efficiency at different angles, and the average antenna efficiency is not lower than 40%.

As can be seen from fig. 11 and 12, the radiator of the antenna is provided on both the floor and the side frames of the floor side, so that the radiator has good antenna efficiency in different radiation directions.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.

The units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be disposed in one place, or may be distributed over a plurality of network units; some or all of the units may 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 in one processing module, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.

Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware associated with program instructions, where the foregoing program may be stored in a computer readable storage medium, and when executed, the program performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a random-access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, or the like, which can store program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An antenna, comprising:

a floor;

the radiator is arranged on the side frame positioned on the side face of the floor and is in feed connection with the floor;

wherein:

the floor separating the side frame into a first portion and a second portion;

the radiator includes:

2. The antenna of claim 1, wherein the floor separates the side frame into the first portion and the second portion along a thickness direction of the side frame.

3. The antenna of claim 1, wherein the antenna is configured to transmit the antenna signal,

the first radiator is connected with the floor feed and is L-shaped.

4. The antenna of claim 1, wherein the antenna is configured to transmit the antenna signal,

the first frequency band is: 3.4 to 3.6Ghz;

the second frequency band is: 4.8 to 5.1Ghz.

5. The antenna of claim 1, wherein the antenna is configured to transmit the antenna signal,

the side frame comprises:

a first side frame;

the radiator is arranged on the first side frame.

6. The antenna of claim 1, wherein the antenna is configured to transmit the antenna signal,

the antenna includes: at least two antenna elements;

the antenna unit includes the radiator;

the antenna further comprises:

and the neutralization line is arranged between two adjacent antenna units.

7. The antenna of claim 6, wherein the antenna is configured to transmit the antenna signal,

the antenna structures of two adjacent antenna units are the same, and the neutralization lines are used as axis mirror images to be distributed on the side frames.

8. The antenna of claim 6, wherein the antenna is configured to transmit the antenna signal,

the side frame comprises: two first side frames;

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

the number of the antenna units is 2N, wherein N is a positive integer;

the 2N antenna units are symmetrically arranged on the two first side frames.

9. A communication terminal, comprising: the antenna of any one of claims 1 to 8.

10. The communication terminal according to claim 9, wherein,

the side frame is a side frame of the housing of the communication terminal.

11. Communication terminal according to claim 9 or 10, characterized in that,

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