CN213636285U

CN213636285U - Antenna system and communication terminal

Info

Publication number: CN213636285U
Application number: CN202022124769.8U
Authority: CN
Inventors: 沈亚川
Original assignee: Ruisheng Precision Manufacturing Technology Changzhou Co ltd
Current assignee: Ruisheng Precision Manufacturing Technology Changzhou Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-07-06
Anticipated expiration: 2030-09-24
Also published as: WO2022062124A1

Abstract

The utility model provides an antenna system, it includes the antenna element that two at least mutual intervals set up, connects two adjacent antenna element's neutralization line and sets up in the adjusting point to ground of neutralization line, be used for connecting ground to the adjusting point to ground. The utility model also provides a mobile terminal. Compared with the prior art, the utility model discloses antenna system and mobile terminal frequency bandwidth, occupation space are little, the isolation is big.

Description

Antenna system and communication terminal

Technical Field

The utility model relates to a communication technology field especially relates to an antenna system and communication terminal.

Background

With the development of mobile communication technology, mobile phones, PADs, notebook computers, etc. have become indispensable electronic products in life, and such electronic products are all updated to electronic communication products with communication functions by adding antenna systems.

At present, most antenna systems for realizing 5G three-frequency full-network communication by mobile communication terminals (such as mobile phones) use a coupling parasitic technology, but although a parasitic unit can increase a frequency band to realize three-frequency full-network coverage, the parasitic unit needs to increase a grounding pin, so that the parasitic unit and the grounding pin need to occupy a certain space, and thus, the space occupied by the antenna system and the cost are increased. Moreover, the number of the antennas in the 5G frequency band is generally more than 4, and the antennas are scattered on four sides of the communication terminal, and due to the limited space of the communication terminal, the antennas are closer and closer, which causes the situations of too strong coupling and poor isolation.

Therefore, there is a need to provide a new antenna system and a communication terminal to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve provides an antenna system and communication terminal that frequency band is wide, occupation space is little, and the isolation is big.

In order to solve the technical problem, the utility model provides an antenna system, antenna system includes two at least antenna element that set up each other at an interval, connects adjacent two antenna element's neutralization line and set up in the adjustment point to ground of neutralization line, be used for ground connection to the adjustment point to ground.

Preferably, each of the antenna units includes:

the first radiator comprises a third section, a fourth section, a fifth section, a sixth section, a seventh section, an eighth section and a ninth section which are sequentially connected; the fourth section, the sixth section and the eighth section extend along a first direction and are arranged at intervals along a second direction, the ninth section is bent and extended along a third direction from the top end of the eighth section, the fifth section is connected with the top ends of the fourth section and the sixth section and extends along the third direction, the third section is connected to the bottom end of the fourth section, and the seventh section is connected with the bottom ends of the sixth section and the eighth section; wherein the first direction and the second direction enclose a first plane, the second direction and the third direction enclose a second plane, and the second plane intersects with the first plane;

the second radiator comprises a tenth section, an eleventh section and a twelfth section; the tenth section extends along a first direction and is opposite to and spaced from the eighth section along the second direction, the twelfth section is connected to the bottom end of the tenth section and extends towards the direction close to the eighth section along the second direction, two ends of the tenth section are respectively connected with the top end and the ninth section of the tenth section, and the tenth section is parallel to the second plane;

a third radiator comprising a thirteenth segment and a fourteenth segment; the thirteenth section extends from the tenth section along the first direction and is arranged between the eighth section and the eleventh section at intervals, and the fourteenth section extends from one side of the thirteenth section far away from the tenth section along the second direction to a range enclosed by the tenth section, the tenth section and the twelfth section;

the feed end is arranged on the third radiating body and used for being connected with a feed signal source; and the number of the first and second groups,

and the grounding end is arranged on the third radiator and is arranged at an interval with the feed end and is used for being connected with the ground.

Preferably, the interval between two adjacent antenna units is 0.8-1.2 mm.

Preferably, two ends of the neutral line are respectively connected to the tenth sections of two adjacent antenna units, and the ground adjusting point is opposite to the interval between the two adjacent antenna units.

Preferably, one of the two adjacent antenna units further includes a second segment extending along the first direction and spaced apart from the fourth segment along the second direction.

Preferably, the third segment and the seventh segment are both parallel to the first plane; the fifth section and the ninth section are both parallel to the second plane.

Preferably, the first direction and the second direction are perpendicular to each other.

Preferably, the feeding end and the grounding end are respectively arranged at two opposite ends of one side of the thirteenth section, which is far away from the tenth section.

Preferably, the ground adjusting point is directly connected to the ground or connected to the ground through a capacitor or an inductor.

The utility model also provides a communication terminal, communication terminal includes the utility model provides an above-mentioned antenna system.

Compared with the prior art, in the antenna system and the communication terminal of the utility model, the antenna system is provided with the first radiator, the second radiator and the third radiator which are connected with each other, so that a parasitic unit is not required to be designed, and the arrangement of the grounding pin is reduced, thereby effectively reducing the space occupied by the antenna system and the production cost; the first radiator forms an M-shaped three-dimensional structure, the longitudinal space is fully utilized to control the size of an antenna system to achieve the purpose of small size, the coverage of a frequency band n78 (3400-; through designing the middle joint line to connect two adjacent antenna units and setting up the adjusting point to the ground at the middle joint line, increase the isolation controllability of antenna unit, the effectual decoupling of realizing to the antenna unit of high coupling degree to very big degree has increased the isolation of antenna system.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic perspective view of an antenna system according to the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another view angle;

fig. 3 is a graph of S-parameter curve of the antenna system of the present invention;

fig. 4 is a graph of the efficiency curve of the antenna system of the present invention;

fig. 5 is an ECC graph of the antenna system of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, for a clearer illustration, the present embodiment proposes an XYZ coordinate system as shown in fig. 1, defining a first direction as an X-axis direction, a second direction as a Y-axis direction, and a third direction as a Z-axis direction. The first direction and the second direction enclose a first plane, the second direction and the third direction enclose a second plane, and the second plane is intersected with the first plane.

The utility model provides an antenna system 100, it includes two at least antenna element 1 that set up at interval each other, connects adjacent two antenna element 1's neutralization line 2 and set up in neutralization line 2 to ground adjustment point 3, be used for connecting ground to ground adjustment point. The design of the neutralization line 2 and the ground adjusting point 3 is used for effectively realizing the decoupling of two adjacent antenna units 1, thereby improving the isolation. Specifically, the ground adjusting point 3 may be directly connected to the ground or connected to the ground through a capacitor or an inductor.

Each of the antenna units 1 includes a first radiator 11, a second radiator 12, a third radiator 13, a feeding terminal 14, and a ground terminal 15.

The first radiator 11 includes a third segment 113, a fourth segment 114, a fifth segment 115, a sixth segment 116, a seventh segment 117, an eighth segment 118, and a ninth segment 119, which are connected in sequence.

The fourth segment 114, the sixth segment 116, and the eighth segment 118 each extend in the first direction (X-axis direction) and are spaced apart from each other in the second direction (Y-axis direction).

The ninth segment 119 is bent and extended from the top end of the eighth segment 118 along the third direction (Z-axis direction). The fifth segment 115 connects the top ends of the fourth segment 114 and the sixth segment 116 and extends in a third direction (Y-axis direction).

The third segment 113 is connected to the bottom end of the fourth segment 114, and the seventh segment 117 is connected to the bottom ends of the sixth segment 116 and the eighth segment 118.

The first radiator 11 of the above structure makes the fourth segment 114, the sixth segment 116, and the eighth segment 118 parallel to the first plane; the fifth section 115 and the ninth section 119 are parallel to the second plane, so that the first radiator 11 forms an M-like shape of a three-dimensional structure, and the structural arrangement makes the first radiator 11 effectively and fully utilize the longitudinal space of the first plane, thereby being beneficial to realizing the control of the overall size of the antenna unit 1 and effectively reducing the space occupied by the antenna system 100.

In this embodiment, one of the two adjacent antenna units 100 further includes a second segment 112, where the second segment 112 extends along the first direction and is spaced apart from the fourth segment 114 along the second direction, that is, the second segment 112 is also parallel to the first plane. The second section 112 is also arranged to substantially take advantage of the longitudinal space of the antenna unit 1 in the first plane. Of course, the first radiator 11 may be extended in length according to the above-mentioned structural rule.

Preferably, the third segment 113 and the seventh segment 117 are parallel to the first plane, so as to further fully utilize the longitudinal space of the first plane; the fifth section 115 and the ninth section 119 are both parallel to the second plane, and make full use of the three-dimensional space, so as to realize the overall size of the control line system 100.

The second radiator 12 includes a tenth segment 121, a tenth segment 122, and a twelfth segment 123.

The tenth segment 122 extends in a first direction (X-axis direction) and is opposite and spaced from the eighth segment 118 in the second direction (Y-axis direction).

The tenth segment 123 is connected to a bottom end of the tenth segment 122 and extends toward the eighth segment 118 along the second direction (Y-axis direction), and the tenth segment 123 is spaced apart from the eighth segment 118.

The two ends of the tenth segment 121 are respectively connected to the top end of the tenth segment 122 and the ninth segment 119, and the tenth segment 121 is parallel to the second plane.

In the above structure, the second radiator utilizes the space of the second plane through the tenth section 121, and the tenth section 122 and the twelfth section 123 utilize the longitudinal space of the first plane, so as to facilitate the overall size control of the antenna system 100.

The third radiator 13 includes a thirteenth segment 131 and a fourteenth segment 132.

The thirteenth segment 131 extends from the tenth segment 121 along the first direction (X-axis direction) and is disposed between the eighth segment 118 and the eleventh segment 122 at an interval.

The fourteenth segment 132 extends from the side of the thirteenth segment 131 far from the tenth segment 121 along the second direction (Y-axis direction) to a space range enclosed by the tenth segment 121, the eleventh segment 122 and the twelfth segment 123. That is, the third radiator 13 makes full use of the space of the second radiator, so that the structure is compact, and the overall size control of the antenna system 100 is realized.

In this embodiment, it is preferable that the first direction and the second direction are perpendicular to each other.

In the above-mentioned structure of each section of the first radiator 11, the second radiator 12, and the third radiator 3, the fifth section 115, the ninth section 119, and the tenth section 121 are all parallel to the second plane and are sequentially spaced apart along the second direction, and the space of the second plane is utilized, and the remaining sections are located on the same side of the fifth section 115, the ninth section 119, and the tenth section 121, and the space of the longitudinal first plane is fully utilized, thereby integrally controlling the occupied volume of the antenna system 100.

The feeding end 14 is disposed on the third radiator 13 and is used for connecting a feeding signal source; the ground terminal 15 is disposed on the third radiator 13 and spaced apart from the feeding terminal 14, and is configured to be connected to ground.

Specifically, the feeding terminal 14 and the grounding terminal 15 are respectively disposed at two opposite ends of the tenth section 131 far away from the tenth section 121, so that an extra space of the antenna system 100 is not occupied, and the size of the antenna system 100 is effectively reduced.

By means of proper current access points and lengths of the neutralization lines, decoupling can be achieved on the two adjacent antenna units 100, so that the isolation degree is increased, and the isolation controllability is further increased by increasing the ground adjusting points arranged on the neutralization lines.

In this embodiment, the two ends of the neutral line 2 are respectively connected to the tenth sections 121 of two adjacent antenna units 1, and the ground adjustment point 3 is located at a position corresponding to a gap between two adjacent antenna units 1.

The utility model discloses an antenna unit 1 of antenna system 100, the M type length of buckling of first irradiator 11 has decided antenna system 100's resonance, the line is walked in the bending of cooperation second irradiator 12, design suitable length, especially the length of tenth section 121, in order to realize three resonance, in the above-mentioned structure in this embodiment, the three resonance that its realized specifically is 3500MHz of first irradiator 11, 2600MHz of second irradiator 12, 4900MHz of third irradiator 13, first irradiator 11 realizes the cover of frequency channel n78 (3400) 3500MHz and frequency channel n78(3500 + 3600MHz), second irradiator 12 realizes the cover of frequency channel n41(2515 + 2675MHz), third radiation realizes that frequency channel n79(4800 + 5000MHz) covers, thereby realize the whole network frequency channel cover. In addition, in the antenna system structure, the arrangement of the parasitic unit is omitted, so that full-band coverage can be realized, and the situation of inefficient resonance caused by the arrangement of the parasitic unit is effectively avoided.

The utility model discloses an among the antenna system 100, with adjacent two 1mm of interval between the antenna unit 1 antenna system 100 is 37.01mm along the total length of second direction for the example. Referring to fig. 3-5, fig. 3 is a graph illustrating S-parameters of the antenna system of the present invention; fig. 4 is a graph of the total efficiency of the antenna system of the present invention, wherein two curves in fig. 4 are respectively system conversion efficiency curves of two adjacent antenna units; fig. 5 is an ECC graph of the antenna system of the present invention. Before the adjacent two antenna units 1 are decoupled, the minimum isolation of the antenna system 100 is about-4 dB at 2.515-2.675GHz, and as can be seen from the figure, the minimum isolation of the antenna system is about-15 dB after the decoupling is realized by designing the middle joint 2 and the ground adjusting point 3, so that the isolation of the antenna system is improved by more than 11 dB.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. An antenna system, characterized in that, it includes at least two antenna elements that set up each other at an interval, connect two adjacent neutralization line of said antenna element and set up the adjustment point to ground of said neutralization line, said adjustment point to ground is used for connecting ground.

2. The antenna system of claim 1, wherein each of the antenna units comprises:

3. The antenna system of claim 1, wherein the adjacent two antenna units are spaced apart by 0.8-1.2 mm.

4. The antenna system according to claim 2, wherein both ends of the neutral line respectively connect the tenth sections of two adjacent antenna elements, and the ground adjustment point is aligned with a space between the two adjacent antenna elements.

5. The antenna system of claim 2, wherein one of two adjacent antenna units further comprises a second segment extending along the first direction and spaced from the fourth segment along the second direction.

6. The antenna system of claim 5, wherein the third segment and the seventh segment are each parallel to the first plane; the fifth section and the ninth section are both parallel to the second plane.

7. The antenna system of claim 6, wherein the first direction and the second direction are perpendicular to each other.

8. The antenna system of claim 2, wherein the feeding terminal and the grounding terminal are respectively disposed at two opposite ends of a side of the thirteenth segment away from the tenth segment.

9. The antenna system of claim 1, wherein the ground adjustment point is connected directly or through a capacitor or an inductor to ground.

10. A communication terminal, characterized in that it comprises an antenna system according to any of claims 1-9.