CN213692322U - Antenna structure and communication device - Google Patents

Abstract

The application provides an antenna structure and a communication device. The antenna structure includes: the antenna comprises a first metal plate, a long-term evolution antenna unit and a new air interface antenna unit, wherein the long-term evolution antenna unit and the new air interface antenna unit are arranged on the first metal plate, the long-term evolution antenna unit is provided with a first grounding part, the first grounding part is electrically contacted and fixedly connected with the first metal plate, the new air interface antenna unit is provided with a second grounding part, and the second grounding part is used for electrically connecting a ground electrode of a corresponding driving circuit. The low-frequency radiation performance of the long-term evolution antenna unit in the antenna structure is high, and the heat dissipation effect is good.

Description

Antenna structure and communication device

Technical Field

The application belongs to the technical field of antennas, and particularly relates to an antenna structure and communication equipment.

Background

In a communication device such as a Customer Premises Equipment (CPE), a device that receives a mobile communication signal and forwards it out with a WIFI signal, and the like, a 4G LTE antenna (long term evolution antenna) and a 5G NR antenna (new air interface antenna) need to be set at the same time. Certainly, the communication device may further include a WIFI antenna, a bluetooth antenna, and the like. How to ensure that various antennas have good radiation performance and communication equipment has good heat dissipation function becomes a technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The present application is directed to providing an antenna structure and a communication device for overcoming the disadvantages of the prior art.

In order to solve the technical problem, the following technical scheme is adopted in the application: an antenna structure comprising: the antenna comprises a first metal plate, a long-term evolution antenna unit and a new air interface antenna unit, wherein the long-term evolution antenna unit and the new air interface antenna unit are arranged on the first metal plate, the long-term evolution antenna unit is provided with a first grounding part, the first grounding part is electrically contacted and fixedly connected with the first metal plate, the new air interface antenna unit is provided with a second grounding part, and the second grounding part is used for electrically connecting a ground electrode of a corresponding driving circuit.

Optionally, the first metal plate encloses a vertically extending inner space, the number of the long term evolution antenna units is multiple and is arranged along the circumferential direction of the first metal plate, the number of the new air interface antenna units is multiple and is arranged along the circumferential direction of the first metal plate, the long term evolution antenna units and the new air interface antenna units are both located on the outer side of the first metal plate, and the long term evolution antenna units and the new air interface antenna units are vertically spaced apart.

Optionally, the method further comprises: the WIFI single-frequency antenna unit comprises a plurality of WIFI single-frequency antenna units arranged along the circumferential direction of the first metal plate and a plurality of WIFI dual-frequency antenna units arranged along the circumferential direction of the first metal plate; the WIFI single-frequency antenna units are provided with third grounding parts which are used for connecting ground electrodes of corresponding driving circuits, the WIFI dual-frequency antenna units are provided with fourth grounding parts which are used for connecting ground electrodes of corresponding driving circuits; the WIFI single-frequency antenna units are vertically spaced from the long-term evolution antenna unit and the new air interface antenna unit; the plurality of WIFI dual-band antenna units are vertically spaced from the long-term evolution antenna unit and the new air interface antenna unit.

Optionally, along an axial direction of the first metal plate, one of the plurality of WIFI single-frequency antenna units and the plurality of WIFI dual-frequency antenna units is located between the plurality of long term evolution antenna units and the plurality of new air interface antenna units, and the other is located outside the plurality of long term evolution antenna units and the plurality of new air interface antenna units as a whole.

Optionally, the plurality of WIFI single-frequency antenna units and the plurality of WIFI dual-frequency antenna units are both opposite to the outer side surface of the first metal plate.

Optionally, the antenna structure further comprises: the second metal plate is used for sealing or semi-sealing one opening of the first metal plate, the second metal plate is electrically connected with the first metal plate, and one of the plurality of WIFI single-frequency antenna units and the plurality of WIFI dual-frequency antenna units, which is located at the outer side of the whole of the plurality of long-term evolution antenna units and the plurality of new air interface antenna units, is opposite to the second metal plate along the axial direction of the first metal plate.

Optionally, the method further comprises: the Bluetooth antenna unit is provided with a fifth grounding part, and the fifth grounding part is used for connecting the ground electrode of the corresponding driving circuit.

Optionally, the long term evolution antenna unit further includes: the first substrate, the first feed point, the first radiation branch, the second radiation branch and the third radiation branch; the first feeding point, the first radiation branch, the second radiation branch and the third radiation branch are all arranged on the same surface of the first substrate;

one end of the first radiation branch and one end of the second radiation branch are connected into a whole, a partial area of the first grounding part covers the area where the first radiation branch and the second radiation branch are connected, and the part of the first grounding part, which exceeds the first substrate and exceeds the first substrate, is fixedly connected with the first metal plate in a welding or screw fixing mode;

gaps are reserved between the first radiation branch and the third radiation branch and between the second radiation branch and the third radiation branch, and the first feed point is arranged on the third radiation branch;

the first substrate is opposite to the first metal plate and is provided with a space.

Optionally, the new air interface antenna unit includes: a second substrate, a third substrate, a fourth substrate, and a fifth substrate;

the third substrate and the fourth substrate are arranged between the second substrate and the fifth substrate, the second substrate is parallel to the fifth substrate, the normal of the third substrate is perpendicular to the normal of the fourth substrate, the normal of the third substrate and the normal of the fourth substrate are both parallel to the plane of the second substrate, a first notch facing the second substrate is formed in the middle of the third substrate, a second notch facing the fifth substrate is formed in the middle of the fourth substrate, and the first notch is sleeved on the second notch;

a fourth radiation branch is arranged on the first surface of the third substrate, the fourth radiation branch surrounds the first notch, a second feeding point is arranged at one end of the fourth radiation branch, two first ground electrode blocks are arranged on the second surface of the third substrate, the two first ground electrode blocks are opposite to the fourth radiation branch and are respectively positioned on two sides of the first notch along a first direction, and the first direction is the extending direction of an intersection line of the third substrate and the second substrate;

a fifth radiation branch is arranged on the first surface of the fourth substrate, the fifth radiation branch surrounds the second gap, a third feed point is arranged at one end of the fifth radiation branch, two second ground electrode blocks are arranged on the second surface of the fourth substrate, the two second ground electrode blocks are opposite to the sixth radiation branch and are respectively positioned on two sides of the second gap along a second direction, and the second direction is the extending direction of an intersection line of the fourth substrate and the second substrate;

four third ground electrode blocks are arranged on the fifth substrate and are respectively opposite to one of the two first ground electrode blocks and the two second ground electrode blocks;

the two first ground electrode blocks and the two second ground electrode blocks are respectively electrically connected with corresponding third ground electrode blocks;

the first ground electrode block, the second ground electrode block and the third ground electrode block participate in forming the second ground part.

Optionally, the middle parts of the four third ground electrode blocks are hollowed.

Optionally, the second substrate is a metal substrate, the second substrate participates in forming a ground portion of the new air interface antenna unit, and the first ground electrode block and the second ground electrode block are electrically connected to the second substrate in a welding manner.

Optionally, the size parameters of the radiation minor matters of at least two new air interface antenna units in the plurality of new air interface antenna units are different.

Optionally, the WIFI single frequency antenna unit further includes: the sixth substrate, the fourth feeding point and the block radiator; the third grounding part is a block grounding electrode, and the block grounding electrode, the fourth feeding point and the block radiator are all arranged on the same surface of the sixth substrate; one side of the block radiator and one side of the block grounding electrode are opposite to each other, the fourth feeding point is arranged in the edge area of the block radiator facing the block grounding electrode, and the block grounding electrode is connected with the block radiator through a metal strip.

Optionally, the WIFI dual band antenna unit further includes: a seventh substrate, a fifth feeding point, a sixth radiation branch, a seventh radiation branch, an eighth radiation branch, and a ninth radiation branch, wherein the fifth feeding point, the sixth radiation branch, the seventh radiation branch, the eighth radiation branch, the ninth radiation branch, and the fourth ground are all disposed on the same surface of the seventh substrate;

one end part of the sixth radiation branch and one end part of the seventh radiation branch are both connected with the fourth grounding part;

one end of the eighth radiating branch is connected with one end of the ninth radiating branch into a whole, and the fifth feeding point is arranged in the connecting area of the eighth radiating branch and the ninth radiating branch and is opposite to the fourth grounding part.

Optionally, the sixth radiation branch and the seventh radiation branch extend in one longitudinal direction of the seventh substrate, and the eighth radiation branch and the ninth radiation branch extend in the other longitudinal direction of the seventh substrate.

Optionally, the bluetooth antenna unit includes: the fifth grounding part, the sixth feeding point, the tenth radiation branch and the eleventh radiation branch are all arranged on the same surface of the eighth substrate;

the tenth radiating branch and the eleventh radiating branch have a pair of opposite sides, the sixth feeding point is disposed at a section of the tenth radiating branch opposite to the eleventh radiating branch, and the fifth grounding point is disposed at a section of the eleventh radiating branch opposite to the tenth radiating branch.

Optionally, the first metal plate is in a shape of a side surface of a cylinder; alternatively, the first metal plate is in the shape of a partial side surface of a cone.

In order to solve the technical problem, the following technical scheme is adopted in the application: a communication device comprises the antenna structure and a driving circuit corresponding to each antenna unit, wherein the grounding parts of the antenna units except the long-term evolution antenna unit in each antenna unit are electrically connected to the ground electrode of the corresponding driving circuit through connecting pieces.

Optionally, the communication device is specifically a client device.

Compared with the prior art, the beneficial effect of this application is:

in one aspect, the first metal plate typically serves as a ground for the entire electrical system in the communication device (e.g., in the client device). The frequency bands of a long term evolution antenna unit typically include: 698MHz-960MHz and 1425MHz-2690 MHz. The grounding part of the long-term evolution antenna unit is directly connected with the first metal plate, so that the radiation performance of the long-term evolution antenna unit at the low-frequency part is improved. The frequency band of the new air interface antenna unit generally needs to include: 2500MHz-5000MHz and 3300MHz-6000MHz, are higher than the long-term evolution antenna unit on the whole, the grounded department of the new air interface antenna unit can be connected with the corresponding drive circuit (for example, the corresponding drive chip) through the connecting piece such as wire or thimble, the new air interface antenna unit can realize better high-frequency radiation.

On the other hand, the first metal plate can have a good heat dissipation effect on heat generated by the new air interface antenna unit (of course, other antenna units are available).

Drawings

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

Fig. 2 is a layout diagram of antenna elements in the communication device shown in fig. 1.

Fig. 3 is a schematic structural diagram of a long term evolution antenna unit in an antenna structure according to an embodiment of the present application.

Fig. 4 is a front view of a new air interface antenna unit in an antenna structure according to an embodiment of the present application.

Fig. 5a to 5d are schematic diagrams of partial structures of the new air interface antenna unit shown in fig. 4, as seen in a first direction, a second direction, a third direction, and a fourth direction, respectively.

Fig. 6 is a schematic structural diagram of a WIFI single-frequency antenna unit in an antenna structure according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a WIFI dual-band antenna unit in an antenna structure according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a bluetooth antenna element unit in the antenna structure of the embodiment of the present application.

Fig. 9 is a return loss characteristic diagram of a long term evolution antenna unit of an embodiment of the present application.

Fig. 10a to 10b are return loss characteristic diagrams of portions corresponding to two first ground electrode blocks in a new air interface antenna unit according to an embodiment of the present application.

Fig. 10c and fig. 10d are return loss characteristic diagrams of corresponding portions of two second ground electrode blocks in the new air interface antenna unit according to the embodiment of the present application.

Fig. 11 is a return loss characteristic diagram of a WIFI single frequency antenna unit of an embodiment of the present application.

Fig. 12 is a return loss characteristic diagram of a WIFI dual-band antenna element of an embodiment of the present application.

Fig. 13 is a return loss characteristic diagram of the bluetooth antenna unit of the embodiment of the present application.

11, a first metal plate; 12. a second metal plate; 2. a long term evolution antenna unit; 21. a first substrate; 22. a second radiating branch; 23. a third radiating branch; 24. a first radiating branch; 25. a first feeding point; 26. a first ground part; 3. a new air interface antenna unit; 31. a second substrate; 32. a fifth substrate; 33. a third substrate; 34. a fourth substrate; 35. a second feeding point; 36. a first notch; 37. a third ground electrode block; 38. a first ground electrode block; 39. a third feeding point; 3a, a second gap; 3b, a second ground electrode block; 3c, a fourth radiation branch; 3d, a fifth radiation branch 4 and a WIFI single-frequency antenna unit; 41. a sixth substrate; 42. a block radiator; 43. a third ground part; 44. a metal strip; 45. a fourth feeding point; 5. a WIFI dual-frequency antenna unit; 51. a seventh substrate; 52. a sixth radiating branch; 53. a seventh radiation branch; 54. an eighth radiation branch; 55. a ninth radiating branch; 56. a fifth feeding point; 57. a fourth ground part; 6. a Bluetooth antenna unit; 61. an eighth substrate; 62. a tenth radiation branch; 63. an eleventh radiation branch; 64. a sixth feeding point; 65. and a fifth ground portion.

Detailed Description

In this application, it is to be understood that terms such as "including" or "having" are intended to indicate the presence of the disclosed features, numbers, steps, acts, components, parts, or combinations thereof, and are not intended to preclude the presence or addition of one or more other features, numbers, steps, acts, components, parts, or combinations thereof.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The application is further described with reference to examples of embodiments shown in the drawings.

As shown in fig. 1 to 8, the present application provides an antenna structure, including: the antenna comprises a first metal plate 11, a long-term evolution antenna unit 2 and a new air interface antenna unit 3, wherein the long-term evolution antenna unit 2 and the new air interface antenna unit 3 are arranged on the first metal plate 11, the long-term evolution antenna unit 2 is provided with a first grounding part 26, the first grounding part 26 is electrically contacted and fixedly connected with the first metal plate 11, and the new air interface antenna unit 3 is provided with a second grounding part which is used for electrically connecting with a ground electrode of a corresponding driving circuit.

In a communication device, such as a client device, the first metal plate 11 may generally serve as a ground for the entire electrical system. The frequency bands of the long term evolution antenna unit 2 typically include: 698MHz-960MHz and 1425MHz-2690 MHz. The first grounding portion 26 of the long term evolution antenna unit 2 is directly connected to the first metal plate 11 (specifically, the two are directly connected by welding, or the two are directly connected by a nut and a screw penetrating through the first grounding portion 26 of the long term evolution antenna unit 2 and the first metal plate 11), so that the radiation performance of the long term evolution antenna unit 2 at a low frequency part is improved. The frequency band of the new air interface antenna unit 3 generally needs to include: 2500MHz-5000MHz and 3300MHz-6000MHz, are higher than long term evolution antenna unit 2 on the whole, the second grounded department of the new air interface antenna unit 3 can be connected with the electric connection of the ground electrode of the corresponding drive circuit (for example, the corresponding drive chip) through the connecting piece such as wire or thimble, the new air interface antenna unit 3 can realize better high-frequency radiation.

Further, the first metal plate 11 can have a good heat dissipation effect on heat generated by the new air interface antenna unit 3 (of course, other antenna units are also available).

When the antenna structure is not incorporated in the communication device, the second ground portion is floating. When the antenna structure is assembled in the communication equipment, the second grounding part is connected with the ground electrode of the corresponding driving chip through a connecting piece such as a lead. Of course, the ground electrode of the driving chip is also finally connected to the first metal plate 11 through a connection member such as a wire. The connections and drive circuitry in the various figures are not shown.

Optionally, referring to fig. 1 and fig. 2, the first metal plate 11 encloses a cylinder having an internal space, the number of the long term evolution antenna units 2 is multiple and is arranged along the circumferential direction of the first metal plate 11, the number of the new air interface antenna units 3 is multiple and is arranged along the circumferential direction of the first metal plate 11, both the long term evolution antenna units 2 and the new air interface antenna units 3 are located outside the first metal plate 11, and the long term evolution antenna units 2 and the new air interface antenna units 3 are vertically spaced apart.

For example, the first metal plate 11 has a side shape of a cylinder (the cross section may be a circle, a rectangle, or the like), and the vertical direction is an axial direction of the cylinder. For example, the first metal plate 11 has a shape of a side surface of a circular truncated cone (a part of a side surface of a circular cone)). That is, the inner diameter of the cylindrical structure may be uniform or non-uniform.

The "vertical" in this context refers to the direction of extension of the inner space of the antenna structure. In most cases, the "vertical" is the vertical direction when the communication device is horizontally positioned when the antenna structure is installed in the communication device.

Specifically, in the embodiment shown in fig. 1, the lte antenna elements 2 are arranged in a ring around the first metal plate 11 (in this case, a metal pipe), for a total of 4; the new air interface antenna units 3 are arranged in a row, for a total of 4, around the first metal plate 11. The two are vertically arranged at intervals, so that the interference between the two can be avoided.

Of course, the number of the new air interface antenna units 3 may be equal to or different from the number of the long term evolution antenna units 2. For example, the number of the new air interface antenna units 3 is 4, and the number of the long term evolution antenna units 2 is 3. For another example, the number of the new air interface antenna units 3 is 3, and the number of the long term evolution antenna units 2 is 3. As long as the radiation performance of the antenna structure in the corresponding frequency band meets the set requirement.

Optionally, the method further comprises: the WIFI dual-frequency antenna comprises a plurality of WIFI single-frequency antenna units 4 arranged along the circumferential direction of a first metal plate 11 and a plurality of WIFI dual-frequency antenna units 5 arranged along the circumferential direction of the first metal plate 11; the multiple WIFI single-frequency antenna units 4 are respectively provided with a third grounding part 43, the third grounding parts 43 are used for connecting the ground electrodes of the corresponding driving circuits, the multiple WIFI dual-frequency antenna units 5 are respectively provided with a fourth grounding part 57, and the fourth grounding parts 57 are used for connecting the ground electrodes of the corresponding driving circuits; the WIFI single-frequency antenna units 4 are vertically spaced from the long-term evolution antenna unit 2 and the new air interface antenna unit 3; the plurality of WIFI dual-band antenna units 5 are vertically spaced apart from both the long term evolution antenna unit 2 and the new air interface antenna unit 3.

In this embodiment, antenna structure can be used to customer premise equipment, can be used to receive 5G communication signal (or 4G communication signal) and radiate away with the WIFI signal.

The arrangement of the vertical gaps is beneficial to avoiding interference among the antenna units of different types.

The frequency band of the WIFI single-frequency antenna unit 4 may be 5150MHz-5850MHz, and the frequency band of the WIFI dual-frequency antenna unit 5 may be 5150MHz-5850MHz and 2400MHz-2500 MHz. The frequency bands of the two WIFI antennas all contain a higher frequency band of 5150MHz-5850MHz, and the WIFI signals of the high frequency band can be strengthened (the WIFI signals have stronger signal transmission capacity relative to the WIFI signals of the low frequency band, and stronger radiation power is needed).

Of course, in some variants, the vertical height of the plurality of WIFI single-frequency antenna elements 4 and of the plurality of WIFI dual-frequency antenna elements 5 is the same, as space allows, for example they are arranged in a ring.

Optionally, along the axial direction of the first metal plate 11, one of the multiple WIFI single-frequency antenna units 4 and the multiple WIFI dual-frequency antenna units 5 is located between the multiple long term evolution antenna units 2 and the multiple new air interface antenna units 3, and the other is located outside the multiple long term evolution antenna units 2 and the multiple new air interface antenna units 3 as a whole.

Namely, the WIFI antenna unit and the mobile communication antenna units of different types are staggered, so that mutual interference is avoided.

For example, according to the current view angle of fig. 1, the WIFI single-frequency antenna unit 4, the long term evolution antenna unit 2, the WIFI dual-frequency antenna unit 5, and the new air interface antenna unit 3 are sequentially arranged from top to bottom.

For example, according to fig. 1, which is currently called, a WIFI single-frequency antenna unit 4, a new air interface antenna unit 3, a WIFI dual-frequency antenna unit 5, and a long term evolution antenna unit 2 are sequentially arranged from top to bottom.

For example, according to the current view angle of fig. 1, the WIFI dual-band antenna unit 5, the long term evolution antenna unit 2, the WIFI single-frequency antenna unit 4, and the new air interface antenna unit 3 are sequentially arranged from top to bottom.

Optionally, the plurality of WIFI single-frequency antenna units 4 and the plurality of WIFI dual-frequency antenna units 5 are both opposite to the outer side surface of the first metal plate 11.

That is, the vertical dimension of first metal sheet 11 is big enough, and WIFI single-frequency antenna and WIFI dual-frequency antenna all set up on the lateral surface of first metal sheet 11 so.

Optionally, the antenna structure further comprises: the second metal plate 12 is used for sealing or semi-sealing one opening of the first metal plate 11, the second metal plate 12 is electrically connected with the first metal plate 11, and one of the plurality of WIFI single-frequency antenna units 4 and the plurality of WIFI dual-frequency antenna units 5 which is located on the outer side of the whole of the plurality of long term evolution antenna units 2 and the plurality of new air interface antenna units 3 is opposite to the second metal plate 12 along the axial direction of the first metal plate 11.

That is, referring to fig. 1 and 2, the side space of the first metal plate 11 is insufficient, and then the WIFI single-frequency antenna or the WIFI dual-frequency antenna is disposed above the top surface of the space surrounded by the first metal plate 11. The structural design of the communication equipment is more compact.

Optionally, the method further comprises: the bluetooth antenna unit 6, the bluetooth antenna unit 6 has the fifth grounding part 65, the fifth grounding part 65 is used for connecting the ground electrode of the corresponding drive circuit.

The resonance frequency band of the Bluetooth antenna unit 6 is 2400MHz-2485MHz, the area is small, and for communication equipment, the setting position can be flexibly selected as long as enough placing space is available.

The specific structure of each antenna element is described below. It should be noted that antenna units having other structures capable of realizing corresponding functions may also be applied to the embodiments of the present application.

Referring to fig. 3, the long term evolution antenna unit 2 further includes: a first substrate 21, a first feeding point 25, a first radiation branch 24, a second radiation branch 22, and a third radiation branch 23; the first feeding point 25, the first radiation branch 24, the second radiation branch 22 and the third radiation branch 23 are all arranged on the same surface of the first substrate 21;

one end of the first radiation branch 24 and one end of the second radiation branch 22 are connected into a whole, a partial area of the first grounding part 26 covers the area where the first radiation branch 24 and the second radiation branch 22 are connected, and the part of the first grounding part 26, which exceeds the first substrate 21 and exceeds the first substrate 21, is fixedly connected with the first metal plate 11 in a welding or screw fixing mode;

gaps are reserved between the first radiation branch 24 and the third radiation branch 23 and between the second radiation branch 22 and the third radiation branch 23, and the first feeding point 25 is arranged on the third radiation branch 23;

the first substrate 21 is opposite to the first metal plate 11 with a gap.

The material of the first substrate 21 may be a substrate material for a hard circuit board (for example, a phenol resin plate or an epoxy resin plate), or may be a plastic holder. In the embodiments of the present application, a substrate material for a hard circuit board is used.

Referring to fig. 9, the third radiating branch 23, which is a radiator of the long term evolution antenna unit 2 and is directly connected to the first feeding point 25, generates the first resonance and the fifth resonance in fig. 9 by the third radiating branch 23. One end of the second radiation branch 22 is connected to the first grounding part 26, and the second radiation branch 22 and the third radiation branch 23 are coupled to generate a second resonance and a fifth resonance. One end of the first radiation branch 24 is connected to the first ground, and the first radiation branch 24 and the third radiation branch 23 are coupled to generate a third resonance and a sixth resonance. The first grounding part 26 is directly connected with the first metal plate 11, so that the low-frequency radiation performance of the long-term evolution antenna unit 2 is enhanced.

Since the first ground portion 26 on the first substrate 21 is directly connected to the first metal plate 11, the distance between the first substrate 21 and the first metal plate 11 should be as large as possible, so as to ensure that the long term evolution antenna unit 2 has good radiation performance. The spacing should be greater than 5mm as space permits. A person skilled in the art can flexibly adjust whether or not a gap is left between the substrate on the other antenna unit and the first metal plate 11 and the second metal plate 12, which will be described later, according to an experimental result, which is not limited herein.

Referring to fig. 4 and fig. 5a to 5d, the new air interface antenna unit 3 includes: a second substrate 31, a third substrate 33, a fourth substrate 34, and a fifth substrate 32;

the third substrate 33 and the fourth substrate 34 are arranged between the second substrate 31 and the fifth substrate 32, the second substrate 31 is parallel to the fifth substrate 32, the normal of the third substrate 33 is perpendicular to the normal of the fourth substrate 34, and the normal are both parallel to the plane where the second substrate 31 is located, the middle of the third substrate 33 is provided with a first notch 36 facing the second substrate 31, the middle of the fourth substrate 34 is provided with a second notch 3a facing the fifth substrate 32, and the first notch 36 is sleeved on the second notch 3 a;

a fourth radiation branch 3c is arranged on the first surface of the third substrate 33, the fourth radiation branch 3c surrounds the first notch 36, a second feeding point 35 is arranged on one end of the fourth radiation branch 3c, two first ground electrode blocks 38 are arranged on the second surface of the third substrate 33, the two first ground electrode blocks 38 are opposite to the fourth radiation branch 3c and are respectively positioned on two sides of the first notch 36 along the first direction, and the first direction is the extending direction of the intersection line of the third substrate 33 and the second substrate 31;

a fifth radiation branch 3d is arranged on the first surface of the fourth substrate 34, the fifth radiation branch 3d surrounds the second notch 3a, a third feeding point 39 is arranged on one end of the fifth radiation branch 3d, two second ground electrode blocks 3b are arranged on the second surface of the fourth substrate 34, the two second ground electrode blocks 3b are both opposite to the fifth radiation branch 3d and are respectively positioned on two sides of the second notch 3a along the second direction, and the second direction is the extending direction of the intersection line of the fourth substrate 34 and the second substrate 31;

four third ground electrode blocks 37 are provided on the fifth substrate 32, and respectively oppose to one of the two first ground electrode blocks 38 and the two second ground electrode blocks 3 b;

the two first ground electrode blocks 38 and the two second ground electrode blocks 3b are electrically connected with the corresponding third ground electrode blocks 37 respectively;

the first ground electrode block 38, the second ground electrode block 3b, and the third ground electrode block 37 participate in forming a second ground.

The third substrate 33 and the fourth substrate 34 are perpendicular to each other, and one of the third radiation branch 23 and the fourth radiation branch 3c disposed thereon generates horizontal polarization, and the other generates vertical polarization.

The third ground electrode block 37 may be electrically connected to its corresponding first ground electrode block 38 by welding or the like. The third ground electrode block 37 may be electrically connected to its corresponding second ground electrode block 3b by welding or the like.

The sizes of different new air interface antenna units 3 are slightly different, which causes the radiation frequency bands generated by the two antenna units to be slightly different. For example, the sizes of the fourth radiation branch 3c and the fifth radiation branch 3d in one new air-interface antenna unit 3 are larger than the sizes of the fourth radiation branch 3c and the fifth radiation branch 3d in another new air-interface antenna unit 3. In fig. 2, two new air interface antenna units 3 in the four new air interface antenna units 3 have the same size reference, and the size parameters of the single eyes of the other two new air interface antennas are the same. In the two new air-interface antenna units 3 with smaller radiation branches, as shown in fig. 10a and 10b, the fifth radiation branch 3d and the fourth radiation branch 3c both implement a frequency band of 3300MHz-6000 MHz. In addition, in two new air-interface antenna units 3 with larger radiation branches, referring to fig. 10c and 10d, the fifth radiation branch 3d and the fourth radiation branch 3c both implement a frequency band of 2500MHz-5000 MHz.

Optionally, the middle parts of the four third ground electrode blocks 37 are hollowed out. Therefore, the circuit path can be increased, and the bandwidth is expanded.

Alternatively, the second substrate 31 is a metal substrate, the second substrate 31 participates in forming a second ground portion, and the first ground electrode block 38 and the second ground electrode block 3b are electrically connected to the second substrate 31 by soldering. That is, the second substrate 31 serves as a part of the ground, and the second substrate 21 performs a reflection function, so that the directivity of the antenna gain is stronger. Of course, the second substrate 31 may be a substrate material for a hard circuit board or a plastic frame.

The third substrate 33, the fourth substrate 34, and the fifth substrate 32 are made of a substrate material for a rigid circuit board or a plastic frame.

Referring to fig. 6, the WIFI single frequency antenna unit 4 further includes: a sixth substrate 41, a fourth feeding point 45, and a block radiator 42; the third grounding part 43 is a block grounding electrode, and the block grounding electrode, the fourth feeding point 45 and the block radiator 42 are all arranged on the same surface of the sixth substrate 41; one side of the block radiator 42 and one side of the block ground electrode are opposite to each other, and the fourth feeding point 45 is disposed at an edge region of the block radiator 42 facing the block ground electrode, and the block ground electrode is connected to the block radiator 42 through a metal strip 44.

The sixth substrate 41 may be a substrate for a hard circuit board or a plastic holder. Referring to fig. 11, the WIFI single-frequency antenna unit 4 implements a resonant frequency band of 5150 and 5850 MHz. Tuning the size of the block radiator 42 lowers the resonant frequency and tuning the size of the block radiator 42 decreases the resonant frequency. The longer the metal strip 44, the wider the bandwidth but the smaller the magnitude of the return loss.

Referring to fig. 7, the WIFI dual band antenna unit 5 further includes: a seventh substrate 51, a fifth feeding point 56, a sixth radiation branch 52, a seventh radiation branch, an eighth radiation branch 54, and a ninth radiation branch 55, wherein the fifth feeding point 56, the sixth radiation branch 52, the seventh radiation branch 53, the eighth radiation branch 54, the ninth radiation branch 55, and the fourth ground 57 are all disposed on the same plane of the seventh substrate 51;

one end of the sixth radiation branch 52 and one end of the seventh radiation branch 53 are both connected to the fourth grounding part 57;

an end of the eighth radiating branch 54 is integrally connected to an end of the ninth radiating branch 55, and a fifth feeding point 56 is disposed at a connection region of the eighth radiating branch 54 and the ninth radiating branch 55 and opposite to the fourth ground 57.

The seventh substrate 51 may be made of a substrate material for a hard circuit board, or may be a plastic frame. Referring to fig. 12, the sixth radiating branch 52 and the eighth radiating branch 54 form a modification of the dipole antenna, implementing a frequency band of 2400MHz to 2483 MHz. The seventh radiation branch 53 and the ninth radiation branch 55 form the deformation of the dipole antenna, and the resonance of the 5150MHz-5850MHz frequency band is realized.

Alternatively, the sixth radiation branch 52 and the seventh radiation branch 53 extend in one longitudinal direction of the seventh substrate 51, and the eighth radiation branch 54 and the ninth radiation branch 55 extend in the other longitudinal direction of the seventh substrate 51.

Referring to fig. 8, the bluetooth antenna unit 6 includes: the eighth substrate 61, the sixth feeding point 64, the tenth radiation branch 62 and the eleventh radiation branch 63, and the fifth ground 65, the sixth feeding point 64, the tenth radiation branch 62 and the eleventh radiation branch 63 are all disposed on the same plane of the eighth substrate 61;

the tenth radiation branch 62 and the eleventh radiation branch 63 have a pair of opposite sides, the sixth feeding point 64 is provided at a section of the tenth radiation branch 62 at the side opposite to the eleventh radiation branch 63, and the fifth ground 65 is provided at a section of the eleventh radiation branch 63 at the side opposite to the tenth branch.

If the lengths of the tenth radiating branch 62 and the eleventh radiating branch 63 are increased, the resonant frequency is decreased. Referring to fig. 13, the bluetooth antenna can implement resonance in the 2400MHz-2485MHz band.

Referring to fig. 1, an embodiment of the present application further provides a communication device, including the foregoing antenna structure, and including a driving circuit corresponding to each antenna unit, wherein a ground portion of an antenna unit except for the long term evolution antenna unit 2 in each antenna unit is electrically connected to a ground electrode of the corresponding driving circuit through a connecting member.

Of course, the ground (i.e. the first ground 26) of the long term evolution antenna unit 2 may also be connected to the ground electrode of the corresponding driving circuit at the same time.

Optionally, the communication device is specifically a client device.

The embodiments in the present application are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The protective scope of the present application is not limited to the above-described embodiments, and it is apparent that various modifications and variations can be made to the present application by those skilled in the art without departing from the scope and spirit of the present application. It is intended that the present application also include such modifications and variations as come within the scope of the appended claims and their equivalents.

Claims (19)

1. An antenna structure, comprising: the antenna comprises a first metal plate (11), a long-term evolution antenna unit (2) and a new air interface antenna unit (3), wherein the long-term evolution antenna unit (2) and the new air interface antenna unit (3) are arranged on the first metal plate (11), the long-term evolution antenna unit (2) is provided with a first grounding part (26), the first grounding part (26) is electrically contacted and fixedly connected with the first metal plate (11), the new air interface antenna unit (3) is provided with a second grounding part, and the second grounding part is used for being electrically connected with a ground electrode of a corresponding driving circuit.

2. The antenna structure according to claim 1, wherein the first metal plate (11) is enclosed into a cylinder with an internal space, the number of the long term evolution antenna units (2) is multiple and is arranged along the circumference of the first metal plate (11), the number of the new air interface antenna units (3) is multiple and is arranged along the circumference of the first metal plate (11), the long term evolution antenna units (2) and the new air interface antenna units (3) are both located outside the first metal plate (11), and the long term evolution antenna units (2) and the new air interface antenna units (3) are vertically spaced apart.

3. The antenna structure according to claim 2, further comprising: a plurality of WIFI single-frequency antenna units (4) arranged along the circumferential direction of the first metal plate (11) and a plurality of WIFI dual-frequency antenna units (5) arranged along the circumferential direction of the first metal plate (11); the WIFI single-frequency antenna units (4) are respectively provided with a third grounding part (43), the third grounding parts (43) are used for connecting the ground electrodes of the corresponding driving circuits, the WIFI double-frequency antenna units (5) are respectively provided with a fourth grounding part (57), and the fourth grounding parts (57) are used for connecting the ground electrodes of the corresponding driving circuits; the WIFI single-frequency antenna units (4) are vertically spaced from the long-term evolution antenna unit (2) and the new air interface antenna unit (3); the WIFI dual-frequency antenna units (5) are vertically spaced from the long-term evolution antenna unit (2) and the new air interface antenna unit (3).

4. The antenna structure according to claim 3, characterized in that, along the axial direction of the first metal plate (11), one of the plurality of WIFI single-frequency antenna units (4) and the plurality of WIFI dual-frequency antenna units (5) is located between the plurality of long term evolution antenna units (2) and the plurality of new air interface antenna units (3), and the other is located outside the entirety of the plurality of long term evolution antenna units (2) and the plurality of new air interface antenna units (3).

5. Antenna structure according to claim 4, characterized in that said plurality of WIFI single-frequency antenna elements (4) and said plurality of WIFI dual-frequency antenna elements (5) are each opposite an outer side of said first metal plate (11).

6. The antenna structure according to claim 4, characterized in that the antenna structure further comprises: a second metal plate (12) closing or semi-closing an opening of the first metal plate (11), the second metal plate (12) being electrically connected to the first metal plate (11), along an axial direction of the first metal plate (11), the plurality of WIFI single-frequency antenna units (4) being located with one of the plurality of WIFI dual-frequency antenna units (5) being located outside the plurality of long term evolution antenna units (2) and the plurality of new air interface antenna units (3) being opposite to the second metal plate (12).

7. The antenna structure according to claim 1, further comprising: the Bluetooth antenna unit (6), the Bluetooth antenna unit (6) has the fifth grounding part (65), the fifth grounding part (65) is used for connecting the ground electrode of the corresponding driving circuit.

8. The antenna structure according to claim 1, characterized in that the long term evolution antenna unit (2) further comprises: a first substrate (21), a first feed point (25), a first radiation branch (24), a second radiation branch (22) and a third radiation branch (23); the first feeding point (25), the first radiation branch (24), the second radiation branch (22) and the third radiation branch (23) are all arranged on the same surface of the first substrate (21);

one end of the first radiation branch (24) and one end of the second radiation branch (22) are connected into a whole, a partial area of the first grounding part (26) covers the area where the first radiation branch (24) and the second radiation branch (22) are connected, and the part, exceeding the first substrate (21) and exceeding the first substrate (21), of the first grounding part (26) is fixedly connected with the first metal plate (11) in a welding or screw fixing mode;

gaps are reserved between the first radiation branch (24) and the third radiation branch (23) and between the second radiation branch (22) and the third radiation branch (23), and the first feeding point (25) is arranged on the third radiation branch (23);

the first substrate (21) is opposite to the first metal plate (11) with a gap.

9. The antenna structure according to claim 1, wherein the new air interface antenna unit (3) comprises: a second substrate (31), a third substrate (33), a fourth substrate (34), and a fifth substrate (32);

the third substrate (33) and the fourth substrate (34) are arranged between the second substrate (31) and the fifth substrate (32), the second substrate (31) is parallel to the fifth substrate (32), the normal of the third substrate (33) and the normal of the fourth substrate (34) are perpendicular to each other and are both parallel to the plane where the second substrate (31) is located, the middle of the third substrate (33) is provided with a first notch (36) facing the second substrate (31), the middle of the fourth substrate (34) is provided with a second notch (3a) facing the fifth substrate (32), and the first notch (36) is sleeved on the second notch (3 a);

a fourth radiation branch (3c) is arranged on a first surface of the third substrate (33), the fourth radiation branch (3c) surrounds the first notch (36), a second feeding point (35) is arranged at one end of the fourth radiation branch (3c), two first ground electrode blocks (38) are arranged on a second surface of the third substrate (33), the two first ground electrode blocks (38) are opposite to the fourth radiation branch (3c) and are respectively positioned on two sides of the first notch (36) along a first direction, and the first direction is the extending direction of an intersection line of the third substrate (33) and the second substrate (31);

a fifth radiation branch (3d) is arranged on a first surface of the fourth substrate (34), the fifth radiation branch (3d) surrounds the second notch (3a), a third feeding point (39) is arranged on one end of the fifth radiation branch (3d), two second ground electrode blocks (3b) are arranged on a second surface of the fourth substrate (34), the two second ground electrode blocks (3b) are opposite to the fifth radiation branch (3d) and are respectively positioned on two sides of the second notch (3a) along a second direction, and the second direction is the extending direction of an intersection line of the fourth substrate (34) and the second substrate (31);

four third ground electrode blocks (37) are provided on the fifth substrate (32), and are respectively opposed to one of the two first ground electrode blocks (38) and the two second ground electrode blocks (3 b);

the two first ground electrode blocks (38) and the two second ground electrode blocks (3b) are electrically connected with corresponding third ground electrode blocks (37) respectively;

the first ground electrode block (38), the second ground electrode block (3b), and the third ground electrode block (37) participate in forming the second ground part.

10. The antenna structure according to claim 9, characterized in that the four third ground electrode blocks (37) are hollowed out in their middle.

11. The antenna structure according to claim 9, wherein the second substrate (31) is a metal substrate, the second substrate (31) participates in forming a ground of the new air interface antenna unit (3), and the first ground electrode block (38) and the second ground electrode block (3b) are electrically connected with the second substrate (31) by means of soldering.

12. The antenna structure according to claim 9, wherein the radiating branch size parameters of at least two new air-interface antenna units (3) of the plurality of new air-interface antenna units (3) are different.

13. Antenna structure according to claim 3, characterized in that said WIFI single frequency antenna unit (4) further comprises: a sixth substrate (41), a fourth feeding point (45), and a block radiator (42); the third grounding part (43) is a block grounding electrode, and the block grounding electrode, the fourth feeding point (45) and the block radiator (42) are all arranged on the same surface of the sixth substrate (41); one side of the block radiator (42) is opposite to one side of the block grounding electrode, the fourth feeding point (45) is arranged at the edge area of the block radiator (42) facing the block grounding electrode, and the block grounding electrode is connected with the block radiator (42) through a metal strip (44).

14. Antenna structure according to claim 3, characterized in that said WIFI dual band antenna unit (5) further comprises: a seventh substrate (51), a fifth feeding point (56), a sixth radiation branch (52), a seventh radiation branch (53), an eighth radiation branch (54), and a ninth radiation branch (55), wherein the fifth feeding point (56), the sixth radiation branch (52), the seventh radiation branch (53), the eighth radiation branch (54), the ninth radiation branch (55), and the fourth ground (57) are all disposed on the same plane of the seventh substrate (51);

one end of the sixth radiation branch (52) and one end of the seventh radiation branch (53) are both connected to the fourth grounding part (57);

one end of the eighth radiating branch (54) is connected to one end of the ninth radiating branch (55), and the fifth feeding point (56) is disposed in a connection region between the eighth radiating branch (54) and the ninth radiating branch (55) and opposite to the fourth ground (57).

15. The antenna structure according to claim 14, characterized in that the sixth radiation branch (52) and the seventh radiation branch (53) extend in one length direction of the seventh substrate (51), and the eighth radiation branch (54) and the ninth radiation branch (55) extend in the other length direction of the seventh substrate (51).

16. The antenna structure according to claim 7, characterized in that the Bluetooth antenna unit (6) comprises: an eighth substrate (61), a sixth feeding point (64), a tenth radiation branch (62) and an eleventh radiation branch (63), wherein the fifth grounding part (65), the sixth feeding point (64), the tenth radiation branch (62) and the eleventh radiation branch (63) are all arranged on the same surface of the eighth substrate (61);

the tenth radiation branch (62) and the eleventh radiation branch (63) have a pair of opposite sides, the sixth feeding point (64) is provided at a section where the side of the tenth radiation branch (62) opposite to the eleventh radiation branch (63) is located, and the fifth ground portion (65) is provided at a section where the side of the eleventh radiation branch (63) opposite to the tenth radiation branch (62) is located.

17. An antenna structure according to claim 2, characterized in that the first metal plate (11) is cylindrical in side view; alternatively, the first metal plate (11) is in the shape of a partial side surface of a cone.

18. A communication device, comprising an antenna arrangement according to any of claims 1-17, and comprising a driving circuit for each antenna element, wherein the ground of the antenna elements of each antenna element, except for the long term evolution antenna element (2), is electrically connected to the ground electrode of the corresponding driving circuit by means of a connection.

19. The communication device according to claim 18, characterized in that the communication device is in particular a client device.

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