CN104218327A - Antenna system and terminal - Google Patents
Antenna system and terminal Download PDFInfo
- Publication number
- CN104218327A CN104218327A CN201310222143.2A CN201310222143A CN104218327A CN 104218327 A CN104218327 A CN 104218327A CN 201310222143 A CN201310222143 A CN 201310222143A CN 104218327 A CN104218327 A CN 104218327A
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- CN
- China
- Prior art keywords
- antenna
- metal arm
- antennas
- terminal
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
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- Details Of Aerials (AREA)
Abstract
The invention discloses an antenna system and a terminal which are used for improving isolation among antennas of a multi-antenna system. The antenna system comprises at least two antennas, a first metal arm and a second metal arm, wherein the first metal arm penetrates the position between any first antenna and second antenna of the antennas and encircles the first antenna by a half, the second metal arm penetrates the position between the first antenna and the second antenna and encircles the second antenna by a half. The metal arms are provided with grooves. By the aid of the antenna system and the terminal, isolation among the antennas is effectively improved, and the technical requirements of the multi-antenna system are met.
Description
Technical field
The present invention relates to wireless antenna field, relate to a kind of antenna system and terminal more specifically.
Background technology
MIMO(Multiple-InputMultiple-Out-put, multiple-input, multiple-output) or MIMO antenna technology be the important breakthrough of wireless mobile communications field antenna technology.This technology can improve capacity and the availability of frequency spectrum of communication system without increase in bandwidth exponentially, is the key technology that the third generation mobile communication system must adopt.MIMO technology allows multiple antenna to send simultaneously and receives multiple spatial flow, and can distinguish and to mail to or from the signal in different spaces orientation.The application of multiaerial system, makes the data flow walked abreast to transmit simultaneously.Meanwhile, adopt multiple antennas at transmitting terminal or receiving terminal, significantly can overcome the decline of channel, reduce the error rate.
But in terminal equipment, especially handheld terminal is subject to the restriction of product appearance and size, the realization of multiple antennas in end product has certain difficulty.In order to solve this technical barrier, traditional layout is that the position that antenna is put is as far as possible far away, and the isolation of antenna is enough large, and such layout to reach certain effect.But end product is more and more higher to appearance requirement at present, the miniaturization of product has become following inevitable trend.It is very desirable that the distance which defined between antenna can not be placed, and the isolation of antenna can not meet the demands.Because the physical distance between antenna and antenna is very near, inevitably there is the disturbed condition between antenna and antenna.
Therefore, there is the technical problem how realizing multiaerial system under less physical size in prior art.
Summary of the invention
The invention provides a kind of antenna system and terminal, for solving in prior art the technical problem existing and how realize multiaerial system under less physical size.
For achieving the above object, according to an aspect of the present invention, provide a kind of antenna system, and adopt following technical scheme:
Antenna system, comprises at least two antennas, also comprises:
First metal arm, described first metal arm is through any first antenna in described at least two antennas and the second antenna, and the first antenna described in semi-surrounding; Second metal arm, described second metal arm is through described first antenna and described second antenna, and the second antenna described in semi-surrounding.
Further, between described first metal arm and described second metal arm, be provided with a groove, described groove is used for separating described first metal arm and described second metal arm.
Further, the length of described groove is 1/4th of wavelength.
Further, the width-adjustable of described groove is whole.
Further, described first metal arm and described second metal arm are L-type.
Further, described first antenna and described second antenna have independent power feeding point respectively, also can adopt coupling feed way.
According to another aspect of the present invention, provide a kind of terminal, and adopt following technical scheme:
This terminal comprises above-mentioned antenna system.
According to a further aspect of the invention, provide a kind of terminal, and adopt following technical scheme:
This terminal, comprises 4 antennas, and described 4 antennas lay respectively on 4 angles of the printing board PCB of described terminal; Described terminal also comprises: the first metal arm, and described first metal arm is through the first antenna in described 4 antennas and the second antenna, and the first antenna described in semi-surrounding; Second metal arm, described second metal arm is through the first antenna in described 4 antennas and described second antenna, and the second antenna described in semi-surrounding; 3rd metal arm, described 3rd metal arm is through the third antenna in described 4 antennas and the 4th antenna, and third antenna described in semi-surrounding; 4th metal arm, described 4th metal arm is through the third antenna in described 4 antennas and described 4th antenna, and the 4th antenna described in semi-surrounding.
Further, between described first metal arm and described second metal arm, be provided with the first groove, described first groove is used for separating described first metal arm and described second metal arm; Between described 3rd metal arm and described 4th metal arm, be provided with the second groove, described second groove is used for separating described 3rd metal arm and described 4th metal arm.
The present invention, by arranging the metal arm of semi-surrounding antenna, improves the isolation between antenna effectively, solves the interference problem between multiple antennas, meets the miniaturized layout requirements of the end products such as mobile phone simultaneously.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 represents the antenna system configuration schematic diagram described in the embodiment of the present invention one;
Fig. 2 represents the antenna system configuration schematic diagram described in the embodiment of the present invention two;
Fig. 3 represents the first antenna, the isolation curve chart of the second antenna under reset condition in the antenna system described in the embodiment of the present invention two;
Fig. 4 represents the first antenna, the isolation curve chart of the second antenna under state of the present invention in the antenna system described in the embodiment of the present invention two.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Fig. 1 represents the antenna system configuration schematic diagram described in the embodiment of the present invention one.
Shown in Figure 1, antenna system, comprises at least two antennas, the first antenna 1 and the second antenna 2, and this antenna system also comprises: the first metal arm 5, and described first metal arm 5 is through the first antenna 1 and the second antenna 2, and the first antenna 1 described in semi-surrounding; Second metal arm 10, described second metal 10 arm is through described first antenna 1 and described second antenna 2, and the second antenna 2 described in semi-surrounding.
Namely the present embodiment is the metal arm by arranging this antenna of semi-surrounding between two antennas, two isolation between antennaes is reached and arranges requirement.
Preferably, between described first metal arm 5 and described second metal arm 10, be provided with the first groove 6, described groove 6 is for separating described first metal arm 5 and described second metal arm 10.
In the present embodiment, by arranging groove between two metal arms, two isolation between antennaes further can be increased.
Preferably, the length of the first groove 6 is 1/4th of wavelength.
Shown in Figure 1, draw two metal arms from the main ground of PCB9, between two-arm, fluting cuts open, the length of fluting can be quarter-wave, also can be about quarter-wave, width can adjust according to antenna performance, improves the overall performance of antenna system with this.
Preferably, described first metal arm 5 and described second metal arm 10 are L-type.
As shown in Figure 1, the metal ground of the first antenna 1 and the second antenna 2, have employed L-type semi-surrounding structure separately.Draw the metal arm of two L-types from the main ground of whole PCB9, and L-type metal ground brachium and arm wide, all can carry out the performance adjusting to mate antenna, promote isolation with this.
Preferably, described first antenna 1 has distributing point respectively with described second antenna 2.
Preferably, the distributing point of described first antenna 1 is positioned at the position away from described first metal arm 5, and the distributing point of described second antenna 2 is positioned at the position away from described second metal arm 10.
Shown in Figure 1, antenna is respectively at two edged feeders 7, although now the first antenna 1 and the second antenna 2 are total to ground structure, but owing to have employed semi-surrounding ground and fluting isolation technology, weakened influence of ground current between the two greatly, isolation is greatly improved.
The invention provides a terminal, comprise above-mentioned antenna system.
The present invention also provides a terminal, shown in Figure 2, this terminal, comprises 4 antennas, and described 4 antennas lay respectively on 4 angles of the printing board PCB 9 of described terminal; Described terminal also comprises: the first metal 5, and described first metal arm 5 is through the first antenna 1 in described 4 antennas and the second antenna 2, and the first antenna 1 described in semi-surrounding; Second metal arm 10, described second metal arm 10 through the first antenna 1 in described 4 antennas and described second antenna 2, and described in semi-surrounding the 22; 3rd metal arm 11, described 3rd metal arm 11 is through the third antenna 3 in described 4 antennas and the 4th antenna 4, and third antenna 3 described in semi-surrounding; 4th metal arm 12, described 4th metal arm 12 is through the third antenna 3 in described 4 antennas and described 4th antenna 4, and the 4th antenna 4 described in semi-surrounding.
Preferably, between described first metal arm 5 and described second metal arm 10, be provided with the first groove 6, described first groove 6 is for separating described first metal arm 5 and described second metal arm 10; Between described 3rd metal arm 11 and described 4th metal arm 12, be provided with the second groove 13, described second groove 13 is for separating described 3rd metal arm 11 and described 4th metal arm 12.
Above-described embodiment is a wireless access terminal, and size 140mm*60mm is operated in LTE frequency range, supports MIMO technology, needs 4 antennas, and the isolation design between 4 antennas is key technology.Be subject to the restriction of PCB9 size, the isolation of antenna can not be improved by the physical location zoomed out between antenna.As shown in Figure 2,4 antennas are positioned over four angles of PCB9 respectively, due to far away between second antenna 2 and third antenna 3, therefore good isolation is had, equally, first antenna 1 with all have more spacious and comfortable isolation between third antenna 3, second antenna 2 and the 4th antenna 4, directly can be able to meet the demands under the condition not taking any measure.And between the first antenna 1 and the second antenna 2, and the isolation between third antenna 3 and the 4th antenna 4 is the difficult point of the design.
If do not take other measures, for 960Mhz, be-6.7dB with the isolation tested according to reality between the first antenna 1 and the second antenna 2, curve as shown in Figure 3, isolation-21dB between second antenna 2 and third antenna 3, isolation-7.2dB between third antenna 3 and the 4th antenna 4, the first antenna 1 and the isolation between third antenna 3, second antenna 2 and the 4th antenna 4 are all about-20dB.Just can meet the demands at about 15dB for two isolation between antennas General Requirements, such layout first antenna 1 and the second antenna 2, the isolation between third antenna 3 and the 4th antenna 4 does not obviously meet the demands.
Adopt the scheme of L-type semi-surrounding ground isolation to improve isolation, as shown in Figure 2, the metal ground of the first antenna 1 and the second antenna 2, have employed L-type semi-surrounding structure separately.Draw the first metal arm 5 and the second metal arm 10 of a L-type from the main ground of whole PCB9, between two-arm, fluting cuts open, and the length of fluting is about quarter-wave, and width adjusts according to antenna performance.Brachium and the arm on L-type metal ground are wide, all can carry out the performance adjusting to mate antenna.Antenna is respectively at two edged feeders 7.Third antenna 3 can adopt identical technology to promote isolation with the 4th antenna 4.
Now according to reality test, after adopting this technology, the isolation between the first antenna 1 and the second antenna 2 reaches-23.6dB, see Fig. 4, basis before can improve about 16dB, substantially meet the requirement of isolation.
For the antenna be operated within the scope of different frequency range, can by reserved on pcb board antenna match, feed placement, fluting size, the arm of L-type metal arm is wide, and brachium adjusts the impedance bandwidth of antenna.
It should be noted that, described wireless device includes but not limited to mobile phone, also can be applied in all places can applying this antenna technology such as wireless access.
The foregoing is only the embodiment that the present invention is applied to wireless access product; within all spirit in this method and principle, fluting size, the arm of L-type metal arm is wide; the aspects such as brachium do any amendment, equivalent replacement, improvement etc., protection of the present invention all should be included in.
Claims (8)
1. an antenna system, comprises at least two antennas, it is characterized in that, also comprise:
First metal arm, described first metal arm is through any first antenna in described at least two antennas and the second antenna, and the first antenna described in semi-surrounding;
Second metal arm, described second metal arm is through described first antenna and described second antenna, and the second antenna described in semi-surrounding.
2. antenna system as claimed in claim 1, it is characterized in that, between described first metal arm and described second metal arm, be provided with a groove, described groove is used for separating described first metal arm and described second metal arm.
3. antenna system as claimed in claim 2, it is characterized in that, the length of described groove is 1/4th of wavelength.
4. antenna system as claimed in claim 2, it is characterized in that, the width-adjustable of described groove is whole.
5. antenna system as claimed in claim 1, it is characterized in that, described first metal arm and described second metal arm are L-type.
6. a terminal, comprises the antenna system described in any one of claim 1 to 5.
7. a terminal, comprises 4 antennas, it is characterized in that, described 4 antennas lay respectively on 4 angles of the printing board PCB of described terminal; Described terminal also comprises:
First metal arm, described first metal arm is through the first antenna in described 4 antennas and the second antenna, and the first antenna described in semi-surrounding;
Second metal arm, described second metal arm is through the first antenna in described 4 antennas and described second antenna, and the second antenna described in semi-surrounding;
3rd metal arm, described 3rd metal arm is through the third antenna in described 4 antennas and the 4th antenna, and third antenna described in semi-surrounding;
4th metal arm, described 4th metal arm is through the third antenna in described 4 antennas and described 4th antenna, and the 4th antenna described in semi-surrounding.
8. terminal as claimed in claim 7, it is characterized in that, between described first metal arm and described second metal arm, be provided with the first groove, described first groove is used for separating described first metal arm and described second metal arm;
Between described 3rd metal arm and described 4th metal arm, be provided with the second groove, described second groove is used for separating described 3rd metal arm and described 4th metal arm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310222143.2A CN104218327A (en) | 2013-06-05 | 2013-06-05 | Antenna system and terminal |
| PCT/CN2013/083841 WO2014194588A1 (en) | 2013-06-05 | 2013-09-18 | Antenna system and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310222143.2A CN104218327A (en) | 2013-06-05 | 2013-06-05 | Antenna system and terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104218327A true CN104218327A (en) | 2014-12-17 |
Family
ID=52007467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310222143.2A Pending CN104218327A (en) | 2013-06-05 | 2013-06-05 | Antenna system and terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104218327A (en) |
| WO (1) | WO2014194588A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600416A (en) * | 2015-01-14 | 2015-05-06 | 深圳市信维通信股份有限公司 | High-isolation MIMO antenna system and wireless communication device |
| CN106571525A (en) * | 2016-11-10 | 2017-04-19 | 捷开通讯(深圳)有限公司 | Antenna system used for optimizing isolation and mobile terminal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201739105A (en) * | 2016-04-28 | 2017-11-01 | 智易科技股份有限公司 | Dual-band antenna |
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| CN1675795A (en) * | 2002-08-07 | 2005-09-28 | 意大利电信股份公司 | Dual band antenna system |
| KR20090045764A (en) * | 2007-11-02 | 2009-05-08 | 한양대학교 산학협력단 | Ultra wide band diversity antenna |
| CN201289902Y (en) * | 2008-05-26 | 2009-08-12 | 建汉科技股份有限公司 | Antenna structure capable of hoisting isolation degree between close range antenna |
| EP2584649A1 (en) * | 2011-10-19 | 2013-04-24 | Kabushiki Kaisha Toshiba | Antenna device and electronic apparatus including antenna device |
Family Cites Families (4)
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| CN101005291B (en) * | 2007-01-19 | 2010-05-19 | 清华大学 | Double frequency plane two antenna system for mobile terminal |
| CN102025025B (en) * | 2010-10-29 | 2013-04-10 | 华南理工大学 | Small-sized wideband high-isolation four-unit MIMO antenna array |
| US8890763B2 (en) * | 2011-02-21 | 2014-11-18 | Funai Electric Co., Ltd. | Multiantenna unit and communication apparatus |
| CN202513284U (en) * | 2012-01-18 | 2012-10-31 | 华南理工大学 | MIMO antenna for raising isolation by using broadband T type neutral line |
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2013
- 2013-06-05 CN CN201310222143.2A patent/CN104218327A/en active Pending
- 2013-09-18 WO PCT/CN2013/083841 patent/WO2014194588A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675795A (en) * | 2002-08-07 | 2005-09-28 | 意大利电信股份公司 | Dual band antenna system |
| KR20090045764A (en) * | 2007-11-02 | 2009-05-08 | 한양대학교 산학협력단 | Ultra wide band diversity antenna |
| CN201289902Y (en) * | 2008-05-26 | 2009-08-12 | 建汉科技股份有限公司 | Antenna structure capable of hoisting isolation degree between close range antenna |
| EP2584649A1 (en) * | 2011-10-19 | 2013-04-24 | Kabushiki Kaisha Toshiba | Antenna device and electronic apparatus including antenna device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600416A (en) * | 2015-01-14 | 2015-05-06 | 深圳市信维通信股份有限公司 | High-isolation MIMO antenna system and wireless communication device |
| CN106571525A (en) * | 2016-11-10 | 2017-04-19 | 捷开通讯(深圳)有限公司 | Antenna system used for optimizing isolation and mobile terminal |
| WO2018086424A1 (en) * | 2016-11-10 | 2018-05-17 | 捷开通讯(深圳)有限公司 | Antenna system having optimized isolation, and mobile terminal |
| US10763577B2 (en) | 2016-11-10 | 2020-09-01 | Jrd Communication (Shenzhen) Ltd | Antenna system for optimizing isolation and mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014194588A1 (en) | 2014-12-11 |
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Application publication date: 20141217 |
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| RJ01 | Rejection of invention patent application after publication |