CN112201951A - Multi-antenna layout structure of antenna bracket and mobile terminal - Google Patents
Multi-antenna layout structure of antenna bracket and mobile terminal Download PDFInfo
- Publication number
- CN112201951A CN112201951A CN202011043884.0A CN202011043884A CN112201951A CN 112201951 A CN112201951 A CN 112201951A CN 202011043884 A CN202011043884 A CN 202011043884A CN 112201951 A CN112201951 A CN 112201951A
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- antenna
- feeding
- layout structure
- mobile terminal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Aerials (AREA)
Abstract
The invention relates to the technical field of antennas and discloses a multi-antenna layout structure of an antenna support and a mobile terminal, wherein a plurality of feeding branches arranged at intervals are coupled around a common coupling branch on the antenna support, at least one feeding end is arranged on one feeding branch and used for being electrically connected with a radio frequency port of the mobile terminal, and an 1/4 wavelength impedance converter is further electrically connected between two feeding ends electrically connected with two radio frequency ports in the same frequency band. The invention realizes that a plurality of feed branches are coupled at the same time through a common coupling branch, realizes multi-antenna layout in a limited space, and connects the corresponding feed ends of two radio frequency ports of the same frequency band through the 1/4 wavelength impedance transformer to form an isolation network, thereby greatly reducing the mutual interference between the two radio frequency ports working in the same frequency band and meeting the requirement of isolation between antennas.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a multi-antenna layout structure of an antenna bracket and a mobile terminal.
Background
With the development of wireless communication technology, the transmission mode of a mobile terminal is more and more abundant, the number of required antennas is more and more, in the prior art, the antennas are mutually independent, each antenna needs to occupy a wiring area independently, particularly, with the development of 5G technology, the antenna is more required, and because the installation space in the mobile terminal is limited, the selectable positions of the antennas are less and less, and the distance between the antennas is shorter due to the increase of the number of the antennas, so that the mutual influence between the antennas is more and more serious;
therefore, how to implement multi-antenna layout in a limited space becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The present invention is directed to a multi-antenna layout structure of an antenna bracket and a mobile terminal, which are used to solve the above technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a multi-antenna layout structure of an antenna support, wherein a common coupling branch is arranged in the antenna support;
a plurality of feeding branches arranged at intervals are coupled around the common coupling branch on the antenna bracket, and at least one feeding end is arranged on one feeding branch and is used for electrically connecting a radio frequency port of the mobile terminal;
and an 1/4 wavelength impedance converter is also electrically connected between the two feed ends electrically connected with the two radio frequency ports in the same frequency band.
Optionally, the feeding branch is arranged on the surface of the antenna bracket; the surface of the antenna mount includes a first feed surface, a second feed surface, and a third feed surface; the third feeding surface is a surface of one side of the antenna bracket facing a PCB of a mobile terminal, and the first feeding surface and the second feeding surface are two surfaces of the antenna bracket located on two opposite sides of the common coupling branch;
the feeding branch node is arranged on the first feeding surface, the second feeding surface or the third feeding surface; the feeding end extends in a direction away from the third feeding surface.
Optionally, the feeding branch is disposed in the antenna bracket, and the feeding end is exposed outside the antenna bracket; or the feed end is also electrically connected with a feed line column for electrically connecting the radio frequency port, and the feed line column is wholly or partially exposed outside the antenna bracket.
Optionally, the plurality of feed ends on the feed branch provided with the plurality of feed ends are used for electrically connecting the plurality of radio frequency ports of different frequency bands.
Optionally, the length of the 1/4 wavelength impedance transformer is inversely proportional to the center operating frequency of the rf port to which the 1/4 wavelength impedance transformer is electrically connected.
Optionally, a filtering isolation circuit and an antenna matching circuit are electrically connected between the radio frequency port and the feed end.
Optionally, a plurality of grounding ends are arranged on the common coupling branch at intervals;
at least one of the plurality of grounding ends is grounded, and the other grounding ends can be selectively grounded or suspended.
In a second aspect, the present invention further provides a mobile terminal, including a PCB, where the PCB is provided with a plurality of radio frequency ports, and an edge of the PCB is provided with an antenna support, and an antenna layout structure of the antenna support adopts the above-mentioned multi-antenna layout structure of the antenna support.
Optionally, the mobile terminal is a mobile phone or a tablet computer.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts a plurality of antennas to share one wiring area, simultaneously couples a plurality of feed branches through one common coupling branch, and then electrically connects the radio frequency port of the mobile terminal through the feed end arranged on the feed branch, thereby realizing the layout of the plurality of antennas in the limited space; and the two radio frequency ports in the same frequency band are connected with the corresponding feed ends through the 1/4 wavelength impedance transformer to form an isolation network, so that the mutual interference between the two radio frequency ports working in the same frequency band can be greatly reduced, and the requirement of the isolation between the antennas can be met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described 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 according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a multi-antenna layout structure of an antenna bracket according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a multi-antenna layout structure of an antenna bracket according to an embodiment of the present invention.
In the figure:
10. a PCB; 20. an antenna mount; 21. a feed branch; 22. 1/4 wavelength impedance transformer; 23. sharing the coupling branch; 201. a routing channel; 211. a feed end.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2 are schematic structural diagrams of a multi-antenna layout structure of an antenna bracket according to an embodiment of the present invention. In order to facilitate understanding of the technical solution of the present embodiment, a portion of the structure, which is not shown inside the antenna holder 20 in fig. 1, is added in fig. 2 and is shown in a dashed line manner. This many antennas layout structure specifically includes:
a common coupling branch 23 is arranged in the antenna bracket 20; the antenna support 20 is coupled with a plurality of feeding branches 21 around the common coupling branch 23, one feeding branch 21 is provided with at least one feeding end 211, and the feeding end 211 is used for electrically connecting a radio frequency port (not shown in the drawing) of the mobile terminal;
an 1/4 wavelength impedance transformer 22 is electrically connected between the two feeding ends 211 electrically connected with the two radio frequency ports of the same frequency band.
In the embodiment, a plurality of feeding branches 21 share one antenna bracket 20, the plurality of feeding branches 21 are isolated by using the three-dimensional space size of the antenna bracket 20, a plurality of feeding branches 21 are coupled at the same time through a shared coupling branch 23, and then the feeding end 211 arranged on the feeding branch 21 is electrically connected with the radio frequency port of the mobile terminal, so that the multi-antenna layout in a specified routing area is realized; and for the two radio frequency ports of the same frequency band, an isolation network is formed by the 1/4 wavelength impedance transformer 22, so that the mutual interference between the two radio frequency ports working in the same frequency band can be greatly reduced, and the requirement of the isolation degree of the antenna is met.
Specifically, the antenna support 20 includes a plurality of outer surfaces, in this embodiment, the antenna support 20 is a square support, and as shown in the figure, the antenna support has six surfaces, and the feeding branch 21 may be disposed on the surface of the antenna support 20 or may be disposed inside the antenna support 20.
As a specific embodiment, the upper surface, the lower surface, and the side surface facing the PCB10 of the antenna holder 20 in fig. 1 are used as feeding surfaces; for convenience of description, in the present embodiment, the upper surface of the antenna support 20 in fig. 1 is defined as a first feeding surface, the lower surface of the antenna support 20 is defined as a second feeding surface, and a side surface facing the PCB10 is defined as a third feeding surface;
as a preferred embodiment, the first feeding surface, the second feeding surface and the third feeding surface are respectively provided with a plurality of feeding branches 21.
As an alternative embodiment, the feeding branch 21 may be disposed inside the antenna support 20, but the feeding end 211 is exposed outside the antenna support 20; or, the feeding terminal 211 is further electrically connected to a feeding post, and the feeding post is electrically connected to the rf port, if so, all or part of the feeding post is exposed outside the antenna bracket 20.
Specifically, if the feeding branch 21 is provided with a plurality of feeding ends 211, in this embodiment, the plurality of feeding ends 211 on the feeding branch 21 are used to electrically connect radio frequency ports of different frequency bands, so as to reduce signal interference between the feeding ends 211 on the same feeding branch 21.
Specifically, the length of the 1/4 wavelength impedance transformer 22 is inversely proportional to the center operating frequency of the radio frequency port to which the 1/4 wavelength impedance transformer 22 is electrically connected. More specifically, the 1/4 wavelength impedance transformer 22 is linear and has a length equal to the speed of light divided by the center operating frequency multiplied by 1/4.
The antenna support 20 is further provided with a routing channel 201, and the 1/4 wavelength impedance converter 22 is routed through the routing channel 201 to electrically connect the two corresponding feeding ends 211.
Specifically, a filtering isolation circuit and an antenna matching circuit are electrically connected between the radio frequency port and the feeding end 211. Through the filter isolation circuit and the antenna matching circuit, each radio frequency port meets the preset requirement of the antenna, and meanwhile, the mutual influence among the ports is reduced, wherein the filter isolation circuit and the antenna matching circuit are conventional technical means in the field, and therefore, the details are not repeated herein.
Specifically, the common coupling branch 23 is provided with a plurality of grounding ends at intervals;
at least one of the plurality of ground terminals is grounded, and the other ground terminals are selectively grounded or suspended. The path length of the current is changed through the grounding end, and the resonant frequency and the working frequency band of the antenna can be adjusted.
The embodiment further provides a mobile terminal, which includes a PCB10, a plurality of radio frequency ports are arranged on the PCB10, an antenna support 20 is arranged at the edge of the PCB10, and the antenna layout structure of the antenna support 20 adopts the above multi-antenna layout structure.
The mobile terminal is an electronic terminal such as a mobile phone and a tablet personal computer integrated with an antenna.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A multi-antenna layout structure of an antenna support is characterized in that a common coupling branch is arranged in the antenna support;
a plurality of feeding branches arranged at intervals are coupled around the common coupling branch on the antenna bracket, and at least one feeding end is arranged on one feeding branch and is used for electrically connecting a radio frequency port of the mobile terminal;
and an 1/4 wavelength impedance converter is also electrically connected between the two feed ends electrically connected with the two radio frequency ports in the same frequency band.
2. The multi-antenna layout structure of an antenna boom of claim 1, wherein the feeding stub is disposed on a surface of the antenna boom; the surface of the antenna mount includes a first feed surface, a second feed surface, and a third feed surface; the third feeding surface is a surface of one side of the antenna bracket facing a PCB of a mobile terminal, and the first feeding surface and the second feeding surface are two surfaces of the antenna bracket located on two opposite sides of the common coupling branch;
the feeding branch node is arranged on the first feeding surface, the second feeding surface or the third feeding surface; the feeding end extends in a direction away from the third feeding surface.
3. The multi-antenna layout structure of an antenna boom of claim 1, wherein the feeding branch is disposed inside the antenna boom, and the feeding end is exposed outside the antenna boom; or the feed end is also electrically connected with a feed line column for electrically connecting the radio frequency port, and the feed line column is wholly or partially exposed outside the antenna bracket.
4. The multi-antenna layout structure of an antenna boom according to claim 1, wherein a plurality of the feeding terminals on the feeding branch with a plurality of the feeding terminals are used for electrically connecting a plurality of the radio frequency ports of different frequency bands.
5. The multiple antenna configuration of claim 4, wherein the length of the 1/4 wavelength impedance transformer is inversely proportional to the center operating frequency of the RF port to which the 1/4 wavelength impedance transformer is electrically connected.
6. The multi-antenna layout structure of an antenna pedestal according to claim 1, wherein a filter isolation circuit and an antenna matching circuit are electrically connected between the rf port and the feeding terminal.
7. The multi-antenna layout structure of an antenna boom of claim 1, wherein a plurality of ground terminals are spaced on the common coupling branches;
at least one of the plurality of grounding ends is grounded, and the other grounding ends can be selectively grounded or suspended.
8. A mobile terminal, comprising a PCB, wherein a plurality of rf ports are disposed on the PCB, and an antenna support is disposed on an edge of the PCB, wherein the antenna layout structure of the antenna support is the multi-antenna layout structure of the antenna support according to any one of claims 1 to 7.
9. The mobile terminal according to claim 8, wherein the mobile terminal is a mobile phone or a tablet computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011043884.0A CN112201951B (en) | 2020-09-28 | 2020-09-28 | Multi-antenna layout structure of antenna bracket and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011043884.0A CN112201951B (en) | 2020-09-28 | 2020-09-28 | Multi-antenna layout structure of antenna bracket and mobile terminal |
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| CN112201951A true CN112201951A (en) | 2021-01-08 |
| CN112201951B CN112201951B (en) | 2023-03-10 |
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