CN204375977U - A kind of multi-input multi-output antenna system - Google Patents
A kind of multi-input multi-output antenna system Download PDFInfo
- Publication number
- CN204375977U CN204375977U CN201520029909.XU CN201520029909U CN204375977U CN 204375977 U CN204375977 U CN 204375977U CN 201520029909 U CN201520029909 U CN 201520029909U CN 204375977 U CN204375977 U CN 204375977U
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- antenna element
- antenna
- decoupling unit
- headroom district
- decoupling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
Abstract
The utility model discloses a kind of multi-input multi-output antenna system, comprising: substrate; Be arranged on multiple antenna elements in the headroom district of described substrate; Be arranged on described substrate headroom district and with multiple decoupling unit of the parallel placement of described multiple antenna element, for improving isolation between antenna element by carrying out decoupling process to the coupling between antenna element, and increase aerial radiation; Wherein, described decoupling unit is conductive component; Be arranged on antenna element for regulating the adjustable economize on electricity parts of the first kind of operating frequency of antenna; Be arranged on decoupling unit for regulating the adjustable economize on electricity parts of the Equations of The Second Kind of the isolation between antenna element and operating frequency of antenna.The utility model is used for transmitting and receiving electromagnetic signal in small-size wireless terminal equipment, simple and compact for structure.
Description
Technical field
The utility model relates to mobile radio terminal technical applications, particularly relates to a kind of multi-input multi-output antenna system with the compact of high-isolation.
Technical background
In recent years, radio communication was just towards Large Copacity, high transmission rates and high reliability future development, and this makes, for limited frequency spectrum resource, how to improve the availability of frequency spectrum to greatest extent, became a heat subject of current research.MIMO (Multiple-Input Multiple-Output, multiple-input and multiple-output) technology is a kind of multi-antenna technology, namely multiple antenna is all equipped with at the receiving terminal of wireless communication system and transmitting terminal, create multiple parallel spatial channels, multiple information flow transmits in identical frequency band through multiple channel simultaneously, can increase power system capacity exponentially, improving the utilization ratio of frequency spectrum, is the important breakthrough of wireless mobile communications field antenna technology.
But because consumer is to the pursuit of small-size wireless terminal equipment, the application tool of mimo antenna in small-size wireless terminal equipment acquires a certain degree of difficulty: antenna namely should be allowed to meet the requirement of MIMO communication isolating degree, again there is compact structure.At present, for improving the coupling isolation between mimo antenna, usually can following methods be used, as: increase antenna distance; Introduce EBG (Electromagnetic Band Gap, electro-magnetic bandgap) structure; Floor cutting; Increase parasitic conductor or parasitic gap structure; Increase network to change antenna feed and phase place etc.And increase the restriction that antenna distance is often subject to astronomical cycle volume in actual applications; Increase parasitic conductor or parasitic gap structure can increase the headroom of antenna; Introduce EBG structure, floor cutting and increase network and all need larger floor, be all unfavorable for the miniaturization of antenna.
Utility model content
The purpose of this utility model is exactly to overcome above-mentioned prior art Problems existing, provides a kind of multi-input multi-output antenna system with the compact of high-isolation, for transmitting and receiving electromagnetic signal in small-size wireless terminal equipment, simple and compact for structure.
In order to realize above-mentioned purpose of the present utility model, provide following technical scheme:
A kind of multi-input multi-output antenna system, comprising: substrate; Be arranged on multiple antenna elements in the headroom district of described substrate; Be arranged on multiple decoupling unit in the headroom district of described substrate, for by carrying out decoupling process to the coupling between antenna element; Wherein, described decoupling unit is conductive component.
Preferably, described multiple decoupling unit and the parallel placement of described multiple antenna element.
In addition, also comprise: be arranged on antenna element for regulating the adjustable economize on electricity parts of the first kind of operating frequency of antenna; Be arranged on decoupling unit for regulating the adjustable economize on electricity parts of the Equations of The Second Kind of the isolation between antenna element and operating frequency of antenna.
Preferably, the described first kind adjustable economize on electricity parts and the adjustable economize on electricity parts of Equations of The Second Kind are variable capacitance and/or variable inductance and/or switch.
Preferably, described substrate has end face floor and floor, bottom surface; The end on described end face floor has end face headroom district, and described multiple antenna element is arranged in end face headroom district; The end on floor, described bottom surface has headroom district, bottom surface, and described multiple decoupling unit is placed in end face headroom district and headroom district, bottom surface; Wherein, the decoupling unit placement parallel with described antenna element in described end face headroom district is positioned at.
Preferably, the structure of described antenna element is loop aerial structure or inverse-F antenna structure or slot antenna configurations.
Preferably, described multiple antenna element comprises the first antenna element and the second antenna element, and described first antenna element and the second antenna element symmetry are arranged in described end face headroom district.
Preferably, described multiple decoupling unit comprises the first decoupling unit and the second decoupling unit, and described first decoupling cellular installation is in end face headroom district, and described second decoupling cellular installation is in headroom district, bottom surface; Wherein, described first decoupling unit and described first antenna element and the parallel placement of the second antenna element.
Preferably, described first decoupling unit is not closed amount to metal band, and described not closed metal band of amounting to keeps at a certain distance away and is placed on the upper end of the first antenna element and the second antenna element; Described second decoupling unit is made up of three sections of metal bands, is arranged in headroom district, bottom surface.
Preferably, described not closed amount to metal band and the first antenna element and the second antenna element are positioned at same plane, and the described not closed opening amounting to metal band aims at the interval between the first antenna element and the second antenna element.
The beneficial effects of the utility model embody in the following areas:
1) the utility model installs decoupling unit in the headroom district of mimo antenna, both can regulate the isolation of antenna, radiation can be carried out as the equivalent radiated power part of antenna again, thus accomplish both to meet the requirement of MIMO communication isolating degree, reduce antenna size again;
2) the utility model installs adjustable economize on electricity parts on antenna element and decoupling unit, for regulating operating frequency of antenna and isolation simultaneously, to cover the communication band expected, makes antenna element be not limited to be operated in 2.4GHz wave band WiFi communication.
Accompanying drawing explanation
Fig. 1 is the top surface structure schematic diagram of the utility model in embodiment one;
Fig. 2 is the bottom surface structure schematic diagram of the utility model in embodiment one;
Fig. 3 is the perspective view of the utility model in embodiment one;
Fig. 4 is the S parameter frequency response curve of the utility model for 2.4GHz wave band WiFi communication;
Fig. 5 is the perspective view of the utility model in embodiment two.
Description of reference numerals: 14-end face base plate; Floor, 16-bottom surface; 190-end face headroom district; Headroom district, 192-bottom surface; 12-MIMO double antenna unit; 122-first antenna element; 124-second antenna element; 182-first decoupling unit; 184-first decoupling unit; 126-first feed; 128-second feed; 260,262,264, the 266-first kind is adjustable economize on electricity parts; 268, the adjustable economize on electricity parts of 270-Equations of The Second Kind.
Embodiment
The utility model provides a kind of multi-input multi-output antenna system with the compact of high-isolation for transmitting and receiving electromagnetic signal in a communications device, comprising: substrate; Be arranged on multiple antenna elements in the headroom district of substrate; Be arranged on the headroom district of substrate and multiple decoupling unit of placement parallel with multiple antenna element.Wherein, by adjustment decoupling unit, decoupling process can be carried out to improve the isolation between antenna element to the coupling between antenna element; Meanwhile, decoupling unit is conductive component, decoupling unit preferable alloy conductive component of the present utility model.Decoupling unit can carry out radiation to increase aerial radiation as a part for antenna element, thus realizes the Miniaturization Design of antenna.
In addition, the utility model also comprises: be arranged on the adjustable economize on electricity parts of the first kind on antenna element, for regulating operating frequency of antenna; Be arranged on the adjustable economize on electricity parts of Equations of The Second Kind on decoupling unit, for regulating isolation between antenna element and operating frequency of antenna.
Below by two specific embodiments, the technical solution of the utility model is described in further detail.
Embodiment one
As shown in Figures 1 to 3, the mimo antenna system in this embodiment comprises: substrate, and substrate has end face floor 14 and floor, bottom surface 16, and the end on end face floor 14 has end face headroom district 190, and the end on floor, bottom surface 16 has headroom district, bottom surface 192; Be arranged on the MIMO double antenna unit 12 in end face headroom district 190; Be arranged on the first decoupling unit 182 (being shown as solid line in Fig. 3) in end face headroom district 190 and be arranged on the second decoupling unit 184 (being shown as dotted line in Fig. 3) in headroom district, bottom surface 192.
Wherein, substrate is the substrate of such as printed circuit board (PCB) and so on.End face floor 14 and floor, bottom surface 16 are conducting metal plane, are connected altogether by through hole or alternate manner.
As shown in Figure 3, MIMO double antenna unit 12 comprises the first antenna element 122 and the second antenna element 124, first antenna element 122 and the second antenna element 124 symmetry are arranged on end face headroom district 190, first antenna element 122 and the second antenna element 124 carries out feed by the first feed 126 and the second feed 128 to it respectively.Preferably, feed can comprise the radio frequency sending set for transmitting radiofrequency signal, radio-frequency transmitter, transmission line and the matching network for received RF signal.
Wherein, the structure of the first antenna element 122 and the second antenna element 124 is loop aerial structure or inverse-F antenna structure or slot antenna configurations, during installation, first antenna element 122 and the second antenna element 124 can adopt identical antenna unit structure form to carry out combination and install, and any two kinds in three kinds of antenna unit structure forms also can be adopted to carry out combination installation.
When the first feed 126 is to the first antenna element 122 feed, the first antenna element 122 can be coupled one part of current to the second antenna element 124.Because the spacing of antenna element is very little, this couple current can be very large, causes isolation between the first antenna element 122 and the second antenna element 124 very poor.When introducing first decoupling unit 182 and the second decoupling unit 184, the couple current on the second antenna element 124 can change.When the first decoupling unit 182 and the second decoupling unit 184 select suitable size, shape and the relative position with two antenna elements, major part couple current is concentrated on the first decoupling unit 182 and the second decoupling unit 184, make the couple current on the second antenna element 124 can become very weak, thus improve the isolation between two antenna elements.Meanwhile, the first decoupling unit 182 and the second decoupling unit 184 also carry out radiation as a part for the first antenna element 122, add the effective length of the first antenna element 122 radiation, achieve the Miniaturization Design of antenna.
Above-mentioned working method is also applicable to the second feed 128 to situation during the second antenna element 124 feed.
Size, the shape of decoupling unit and the working frequency points of antenna element and the size of isolation can be affected with the relative position of antenna element.Exemplarily, as shown in figs. 1 and 3, first decoupling unit 182 amounts to metal band for not closed, and what this was not closed amount to metal band and the first antenna element 122 and the second antenna element 124 is positioned at same plane and keeps at a certain distance away and be placed on the upper end of the first antenna element 122 and the second antenna element 124; Concrete, the not closed opening amounting to metal band aims at the interval between the first antenna element 122 and the second antenna element 124.As shown in Figures 2 and 3, the second decoupling unit 184 is made up of three sections of metal bands, is arranged in headroom district, bottom surface 192.When 1/2nd wavelength corresponding with operating frequency of antenna when the girth of two decoupling unit are comparable, decoupling unit resonance is in the operating frequency of antenna.By adjusting the relative position of two decoupling unit and antenna element, weakening the mutual coupling electric current between two antenna elements, improving isolation between antennas.Meanwhile, the electric current on decoupling unit also carries out radiation, reduces the size of antenna element.
Fig. 4 gives the S parameter frequency response curve of the mimo antenna system for 2.4GHz wave band WiFi communication, and wherein hatched example areas is Antenna Operation ghz area (2.4-2.48GHz).As can be seen from the figure, mimo antenna system is less in the internal reflection loss of working frequency range region, has very high isolation.
Embodiment two
As shown in Figure 5, the mimo antenna system in this embodiment comprises: substrate, and substrate has end face floor 14 and floor, bottom surface 16, and the end on end face floor 14 has end face headroom district 190, and the end on floor, bottom surface 16 has headroom district, bottom surface 192; Be arranged on the MIMO double antenna unit 12 in end face headroom district 190; Be arranged on the first decoupling unit 182 (being shown as solid line in Fig. 5) in end face headroom district 190 and be arranged on the second decoupling unit 184 (being shown as dotted line in Fig. 5) in headroom district, bottom surface 192.Wherein, MIMO double antenna unit 12 comprises the first antenna element 122 and the second antenna element 124.
In this embodiment, the first antenna element 122 and the second antenna element 124, and the structure of the first decoupling unit 182 and the second decoupling unit 184 and working method are with embodiment one.In addition, this embodiment also comprises the adjustable economize on electricity parts 260,264 of the first kind be arranged on the first antenna element 122, be arranged on the adjustable economize on electricity parts 262,266 of the first kind on the second antenna element 124, be arranged on the adjustable economize on electricity parts 270 of Equations of The Second Kind on the first decoupling unit 182, be arranged on the adjustable economize on electricity parts 268 of Equations of The Second Kind on the second decoupling unit 184.
When the first feed 126 is to the first antenna element 122 feed, the state by changing the adjustable economize on electricity parts 260,264 of the first kind changes the operating frequency of the first antenna element 122.By regulating the Equations of The Second Kind adjustable economize on electricity parts 270 be arranged on the first decoupling unit 182 and the adjustable economize on electricity parts 268 of Equations of The Second Kind being arranged on the second decoupling unit 184, the first antenna element 122 can be changed and be coupled to current amplitude on the second antenna element 124, improve the isolation between two antenna elements; Meanwhile, Equations of The Second Kind is adjustable economize on electricity parts 270 and the adjustable economize on electricity parts 268 of Equations of The Second Kind can regulate operating frequency of antenna, to cover the communication band expected.
Above-mentioned working method is also applicable to the second feed 128 to situation during the second antenna element 124 feed.
In addition, each antenna element also only can comprise the adjustable economize on electricity parts of the first kind and carry out operating frequency adjustment; Two decoupling unit only can comprise the adjustable economize on electricity parts of Equations of The Second Kind and carry out isolation and operating frequency of antenna adjustment.
Preferably, the first kind is adjustable economize on electricity parts and the adjustable economize on electricity parts of Equations of The Second Kind can use switch to realize, and the parts that can be placed under multiple different conditions also can be used to realize, the electric capacity that such as can continuously change and/or the inductor that can continuously change.During use, the first kind is adjustable economize on electricity parts and the adjustable economize on electricity parts of Equations of The Second Kind can realize by an inductance that the electric capacity that employing switch maybe can continuously change maybe can continuously change, and any two kinds in switch, the electric capacity that can continuously change and inductance three kinds of forms that can continuously change also can be adopted to realize.
Antenna element in the utility model is not limited to work in 2.4GHz wave band WiFi communication, and the size or the adjustable economize on electricity parts that change antenna can change operating frequency.
Although above-mentioned, the utility model is elaborated; but the utility model is not limited thereto; those skilled in the art can modify according to principle of the present utility model; therefore, all various amendments carried out according to principle of the present utility model all should be understood to fall into protection range of the present utility model.
Claims (10)
1. a multi-input multi-output antenna system, is characterized in that, comprising:
Substrate;
Be arranged on multiple antenna elements in the headroom district of described substrate;
Be arranged on multiple decoupling unit in the headroom district of described substrate, for by carrying out decoupling process to the coupling between antenna element;
Wherein, described decoupling unit is conductive component.
2. multi-input multi-output antenna system as claimed in claim 1, is characterized in that, described multiple decoupling unit and the parallel placement of described multiple antenna element.
3. multi-input multi-output antenna system as claimed in claim 2, is characterized in that, also comprise:
Be arranged on antenna element for regulating the adjustable economize on electricity parts of the first kind of operating frequency of antenna;
Be arranged on decoupling unit for regulating the adjustable economize on electricity parts of the Equations of The Second Kind of the isolation between antenna element and operating frequency of antenna.
4. multi-input multi-output antenna system as claimed in claim 3, is characterized in that, the described first kind is adjustable economize on electricity parts and the adjustable economize on electricity parts of Equations of The Second Kind are variable capacitance and/or variable inductance and/or switch.
5. multi-input multi-output antenna system as claimed in claim 4, it is characterized in that, described substrate has end face floor and floor, bottom surface; The end on described end face floor has end face headroom district, and described multiple antenna element is arranged in end face headroom district; The end on floor, described bottom surface has headroom district, bottom surface, and described multiple decoupling unit is placed in end face headroom district and headroom district, bottom surface;
Wherein, the decoupling unit placement parallel with described antenna element in described end face headroom district is positioned at.
6. multi-input multi-output antenna system as claimed in claim 5, is characterized in that, the structure of described antenna element is loop aerial structure or inverse-F antenna structure or slot antenna configurations.
7. multi-input multi-output antenna system as claimed in claim 6, it is characterized in that, described multiple antenna element comprises the first antenna element and the second antenna element, and described first antenna element and the second antenna element symmetry are arranged in described end face headroom district.
8. multi-input multi-output antenna system as claimed in claim 7, it is characterized in that, described multiple decoupling unit comprises the first decoupling unit and the second decoupling unit, and described first decoupling cellular installation is in end face headroom district, and described second decoupling cellular installation is in headroom district, bottom surface;
Wherein, described first decoupling unit and described first antenna element and the parallel placement of the second antenna element.
9. multi-input multi-output antenna system as claimed in claim 8, it is characterized in that, described first decoupling unit is not closed amount to metal band, and described not closed metal band of amounting to keeps at a certain distance away and is placed on the upper end of the first antenna element and the second antenna element; Described second decoupling unit is made up of three sections of metal bands, is arranged in headroom district, bottom surface.
10. multi-input multi-output antenna system as claimed in claim 9, it is characterized in that, described not closed amount to metal band and the first antenna element and the second antenna element are positioned at same plane, and the described not closed opening amounting to metal band aims at the interval between the first antenna element and the second antenna element.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520029909.XU CN204375977U (en) | 2015-01-16 | 2015-01-16 | A kind of multi-input multi-output antenna system |
| PCT/CN2015/081397 WO2016112628A1 (en) | 2015-01-16 | 2015-06-12 | Multiple-input multiple-output antenna system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520029909.XU CN204375977U (en) | 2015-01-16 | 2015-01-16 | A kind of multi-input multi-output antenna system |
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| CN204375977U true CN204375977U (en) | 2015-06-03 |
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| CN201520029909.XU Active CN204375977U (en) | 2015-01-16 | 2015-01-16 | A kind of multi-input multi-output antenna system |
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| CN (1) | CN204375977U (en) |
| WO (1) | WO2016112628A1 (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016112628A1 (en) * | 2015-01-16 | 2016-07-21 | 中兴通讯股份有限公司 | Multiple-input multiple-output antenna system |
| CN106025562A (en) * | 2016-06-27 | 2016-10-12 | 北京航空航天大学 | Slit antenna having coupling inhibition narrowband |
| CN106450697A (en) * | 2016-10-21 | 2017-02-22 | 珠海市魅族科技有限公司 | Antenna apparatus of electronic equipment and the electronic equipment |
| CN107275783A (en) * | 2017-06-23 | 2017-10-20 | 曲龙跃 | A kind of integral type dual-antenna system with high-isolation |
| CN107317103A (en) * | 2017-06-23 | 2017-11-03 | 曲龙跃 | A kind of integral type dual-antenna system |
| WO2017219480A1 (en) * | 2016-06-22 | 2017-12-28 | 中兴通讯股份有限公司 | Decoupling device |
| WO2018014702A1 (en) * | 2016-07-20 | 2018-01-25 | 华为技术有限公司 | Antenna and mobile terminal |
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| CN109378586A (en) * | 2018-11-28 | 2019-02-22 | 英业达科技有限公司 | More feed antennas |
| WO2019057195A1 (en) * | 2017-09-25 | 2019-03-28 | 中兴通讯股份有限公司 | Antenna system and terminal |
| CN110931973A (en) * | 2018-09-20 | 2020-03-27 | 中兴通讯股份有限公司 | Terminal device |
| WO2020088264A1 (en) * | 2018-11-02 | 2020-05-07 | 中兴通讯股份有限公司 | Antenna structure and terminal |
| WO2021000705A1 (en) * | 2019-06-30 | 2021-01-07 | Oppo广东移动通信有限公司 | Antenna apparatus and electronic device |
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| CN112768920A (en) * | 2020-12-30 | 2021-05-07 | 深圳市信丰伟业科技有限公司 | Millimeter wave antenna system based on asymmetric coplanar decoupling structure |
| WO2022233248A1 (en) * | 2021-05-06 | 2022-11-10 | 荣耀终端有限公司 | Antenna decoupling structure, mimo antenna and terminal |
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| CN101662068A (en) * | 2008-08-29 | 2010-03-03 | 华为技术有限公司 | Decoupling assembly, antenna module and antenna array |
| US8339322B2 (en) * | 2009-02-19 | 2012-12-25 | Galtronics Corporation Ltd. | Compact multi-band antennas |
| DE102011107128A1 (en) * | 2011-07-12 | 2013-01-17 | Eads Deutschland Gmbh | Arrangement for dual-mode, T-branch non-radiating dielectric square wave conductor, for e.g. array antenna, has micro strip lines provided on top of plane substrate layer in region of coupling slots and decoupling slots |
| CN103825093A (en) * | 2012-11-16 | 2014-05-28 | 启碁科技股份有限公司 | Decoupling circuit and antenna apparatus |
| CN204375977U (en) * | 2015-01-16 | 2015-06-03 | 中兴通讯股份有限公司 | A kind of multi-input multi-output antenna system |
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- 2015-06-12 WO PCT/CN2015/081397 patent/WO2016112628A1/en active Application Filing
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| CN108039590A (en) * | 2016-10-31 | 2018-05-15 | 台达电子工业股份有限公司 | Dual-band and dual-feed enters antenna structure |
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| WO2021000705A1 (en) * | 2019-06-30 | 2021-01-07 | Oppo广东移动通信有限公司 | Antenna apparatus and electronic device |
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| WO2022233248A1 (en) * | 2021-05-06 | 2022-11-10 | 荣耀终端有限公司 | Antenna decoupling structure, mimo antenna and terminal |
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| WO2016112628A1 (en) | 2016-07-21 |
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