CN107946769A - A kind of 4G MIMO antenna for mobile phone based on liquid metal - Google Patents
A kind of 4G MIMO antenna for mobile phone based on liquid metal Download PDFInfo
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- CN107946769A CN107946769A CN201711043190.5A CN201711043190A CN107946769A CN 107946769 A CN107946769 A CN 107946769A CN 201711043190 A CN201711043190 A CN 201711043190A CN 107946769 A CN107946769 A CN 107946769A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
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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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
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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
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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
- 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
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
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Abstract
The present invention relates to a kind of adjustable 4G MIMO antenna for mobile phone based on liquid metal, including a plane single pole sub antenna, a planar inverted-F antenna, liquid metal channel, liquid metal, metal ground body, two L-type metals ground branch.Wherein, monopole antenna is primary antenna, can be operated in this eight frequency ranges of LTE700/GSM850/GSM900/DCS/PCS/UMTS/LTE2300/LTE2500.Planar inverted-F antenna is slave antenna, can cover this five high bands for being higher than 1GHz of DCS/PCS/UMTS/LTE2300/LTE2500, in the LTE700/GSM850/GSM900 frequency ranges less than 1GHz, can change resonant frequency by adjusting the length of liquid metal.Isolation of two antennas in working frequency range is higher than 10dB, and the efficiency of antenna is in low-frequency range up to more than 60%, and in high band up to more than 80%, and the adjustment length of liquid metal can meet the basic demand of antenna for mobile phone within 20mm.The antenna has the advantages that wide covering frequency range, easily fabricated, antenna efficiency simple in structure and isolation are good.
Description
Technical field
The present invention relates to mobile communication mimo antenna technical field, particular content is a kind of based on the restructural of liquid metal
4G MIMO antenna for mobile phone.
Background technology
With the development of the communication technology, the requirement to mobile phone aerial information transmission rate is also higher and higher, MIMO technology
Using that can increase exponentially radio channel capacity, in the case where not increasing communication bandwidth, what MIMO technology can be at double carries
High spectrum utilization.At present, the research for mimo antenna relates generally to the high band that frequency is higher than 1GHz, on less than 1GHz
LTE700/GSM850/GSM900 frequency ranges in mimo antenna decoupling technical research it is relatively little of more.Usual two-port MIMO days
Two antennas in line are located at two short sides of circuit board of mobile phone respectively, and the research based on the intrinsic theory of modules shows, a plane
Inverse-F antenna, which is located at the structure that another central monopole antenna of circuit board is placed on circuit board short side, significantly to be improved
Isolation, but such design is difficult to practical application.With the reduction of working frequency, the electrical length of bigger causes two
Mutual coupling between antenna is more notable, this also to realize that MIMO technology is extremely difficult in low-frequency range.
Reconfigurable antenna based on liquid metal was most proposed earlier than 2009, was tied compared to using varactor and machinery
The reconfigurable antenna of structure, the biasing circuit that liquid metal antenna need not be complicated, structure are simpler.By varying liquid metal
Length can be achieved with the adjusting of antenna resonant frequency.But, there are certain difficulty, PMMA ditches for the processing of liquid metal channel
Road material can also make the frequency of antenna produce certain deviation.
Therefore, the restructural MIMO antenna for mobile phone that whole 4G frequency ranges can simultaneously be covered based on liquid metal by designing has actual anticipate
Justice.
The content of the invention
The present invention proposes a kind of restructural 4G MIMO antenna for mobile phone based on liquid metal, which is planar structure,
Production cost and difficulty are low, frequency-adjustable.
4G MIMO antenna for mobile phone provided by the invention based on liquid metal, comprising a plane single pole sub antenna, one
Planar inverted-F antenna, liquid metal channel, liquid metal are filled into liquid metal channel formation liquid metal bar, metal ground this
Body, two L-type metals ground branch；Wherein, plane single pole sub antenna is primary antenna, can cover low-frequency range 698-960MHz at the same time
With high band 1710-2690MHz；Planar inverted-F antenna is slave antenna, covers 1710-2690MHz frequency ranges, and by adjusting liquid
The equivalent covering 698-960MHz frequency ranges of metal length；Isolation of two antennas in working frequency range is consistently higher than 10dB；Liquid
Metal channel is arranged at the side of planar inverted-F antenna, and slave antenna is adjusted in low-frequency range by adjusting the length of liquid metal bar
Interior resonance point, the length of different liquid metal bars correspond to different low-frequency resonant frequencies；Two L-type metals ground branch's print
The planar inverted-F antenna side of brush body in metal, for adjust planar inverted-F antenna high-frequency resonant point and low-frequency resonant point and
Isolation.Influence of the adjusting liquid metal length to the high band of monopole antenna and planar inverted-F antenna is limited, and two antennas exist
All the time there can be good isolation in working frequency range.
The structure of antenna for mobile phone is plane, does not introduce the lumped-parameter elements such as capacitance, inductance, primary antenna, slave antenna
And decoupling structure that branch is formed is printed on circuit board of mobile phone by liquid metal and L-type metal, planar inverted-F antenna passes through
Body is connected ground hole with metal, and it is simple to manufacture technique of low cost.
Liquid metal channel is connected with the radiation metal strip of planar inverted-F antenna, the length of liquid metal can be adjusted from 0mm to
28mm, different liquid metal length correspond to planar inverted-F antenna resonant frequency different in low-frequency range.Planar inverted-F antenna
Low band resonance frequency only determined by one section of liquid metal bar, existed by the length for adjusting liquid metal bar to adjust slave antenna
Resonance point in low-frequency range, to a certain fixed liquid metal strip length, -6dB bandwidth is at least 10MHz, resonance point closer to
960MHz, -6dB bandwidth are bigger.
Two antennas for realizing MIMO functions are respectively plane single pole sub antenna and planar inverted-F antenna, make use of inverse-F antenna
With the Surface current distribution feature of monopole antenna, natural isolation is preferable, and decoupling structure is relatively easy, and antenna is in working frequency range
Interior isolation is consistently higher than 10dB.
Plane single pole sub antenna and planar inverted-F antenna isolation are distributed in two short sides of circuit board of mobile phone.Such design
Meet the custom of mobile phone mimo antenna mobile phone.
The low-frequency range is LTE700, GSM850 and GSM900, frequency 698-960MHz；The high band is
DCS2300, PCS2300, UMTS2300, LTE2300 and LTE2500, frequency 1710-2690MHz.
Two antennas are planar structure, and antenna is printed on circuit boards, it is not necessary to extra additional structure, and antenna
Occupied area is smaller, wherein, the area that planar inverted-F antenna accounts for is 20 × 60mm2(LiangLXing branches occupied area is calculated
It is interior), the area that plane single pole sub antenna takes is 15 × 60mm2, the difficulty and cost of production greatly reduces in planar structure,
Few volume can also be taken in mobile phone.
When circuit board size is 60 × 120mm2When, the size of planar inverted-F antenna is 20 × 60mm2, plane single pole sub antenna
Size be 15 × 60mm2。
Metal ground with being also placed with two L-type metals branch on body in planar inverted-F antenna side, is individually positioned in gold
The position at the edge in possession and close feed mouth, act as adjusting the return wave loss parameter and isolation of low-frequency range and high band.
The Liang Ge L-types branch of the metal ground of planar inverted-F antenna side be respectively used to high band and low-frequency range return wave loss parameter and
The adjusting of isolation, L-type metal branch close to planar inverted-F antenna distributing point, another L-type metal branch be located at
Circuit board of mobile phone edge；Close to planar inverted-F antenna distributing point L-type metal branch high band produce a resonance point,
Positioned at circuit board of mobile phone edge L-type metal branch be used for adjust resonance point of the planar inverted-F antenna in low-frequency range, in whole works
Isolation higher than 10dB can be realized by making two antennas in frequency range.
Positioned at circuit board of mobile phone edge L-type metal branch laterally for two-stage it is stepped, by dividing with adjusting L-type metal
The change of fore-and-aft distance between branch and liquid metal bar, to take into account covering GSM900 frequency ranges and ensure LTE700 frequency range isolations
Requirement.Specifically, when the L-type metal branch apart from liquid metal bar fore-and-aft distance be less than about 4mm when, antenna for mobile phone exists
The isolation of LTE700 frequency ranges can be met the requirements, but overlayable highest frequency also can be lower in the nearlyer low-frequency range of distance, as the L
Type metal branch apart from liquid metal bar fore-and-aft distance be more than about 3mm when, antenna for mobile phone covering GSM900 frequency ranges, therefore use
Stair-stepping design changes the distance between L branches and liquid metal.
In the restructural 4G MIMO antenna for mobile phone of liquid metal, liquid is filled in jointly with deionized water and liquid metal
In state metal channel and the conduit being attached thereto, the pressure produced by Micropump can accurately be delivered to liquid by deionized water
Metal.It can realize the accurate control of liquid metal bar length；When liquid metal is not injected into liquid metal channel, planar inverted
The low-frequency resonant frequency highest of F antennas, when liquid metal fills raceway groove, corresponding low-frequency resonant frequency is minimum；Less than 20mm
Long liquid metal channel can low-frequency range it is continuously adjustable cover 698-960MHz frequency ranges.
The material of planar monopole antenna, planar inverted-F antenna and metal ground is copper, circuit board material Rogers
RO4350B, liquid metal material are gallium-indium-tin alloy, and liquid metal channel material is PMMA.Wherein, for constructing liquid metal
The introducing of the PMMA materials of passage has a certain impact the performance of planar inverted-F antenna, and the size by varying PMMA materials can
So that the parameter of antenna meets the requirement of practical application, the smaller influence to antenna performance of volume of PMMA materials is smaller.Thickness
3mm is arrived for 2, and the position of PMMA blocks placement is not covered with the L-type branch of metal ground, the so influence to antenna performance
It can be reduced in acceptable scope, while the difficulty processed is nor very big.
The principle of the present invention is：
The present invention is a kind of restructural 4G MIMO antenna for mobile phone based on liquid metal, make use of planar inverted-F antenna and list
The characteristics of pole sub-antenna Surface current distribution, monopole antenna sufficiently excite the surface of metal ground in the state of resonance
Electric current, so as to obtain higher bandwidth and radiation efficiency, comparatively the electric current in metal excitation on the ground of planar inverted-F antenna divides
Cloth compares concentration, is mainly distributed near antenna, and this circuit distribution has a great impact the beamwidth of antenna, but can reduce
The electric current being diffused on monopole antenna, is conducive to improve the isolation between two antennas.From the result of emulation can it also seen that,
Compared with planar inverted-F antenna, the surface current of the L-type metal branch of board edge is very strong, illustrates that L-type branch can attract
The radiation current of planar inverted-F antenna is diffused into from monopole antenna, so as to improve both isolations.Liquid metal is as plane
Inverse-F antenna radiates a part for metal strip, and different length corresponds to different resonant frequencies, by varying injection PMMA liquid
Liquid metal length in metal channel can just change the resonant frequency of antenna.When liquid metal is not injected into liquid metal ditch
During road, the low-frequency resonant frequency highest of planar inverted-F antenna, when liquid metal fills raceway groove, corresponding low-frequency resonant frequency is most
It is low.Liquid metal less than 20mm long can equally cover 698-960MHz frequency ranges in low-frequency range.
The present invention compared with prior art the advantages of be：
(1), the present invention uses the length-adjustable antenna structure based on liquid metal, and two antennas cooperate can be in 4G
8 frequency ranges on realize MIMO functions.In the LTE700/GSM850/GSM900 band limits less than 1GHz, plane inverse-F day
Line be able to can be reached at least by the resonant frequency of the length adjustment antenna of liquid metal in the -6dB bandwidth of low-frequency range
10MHz, the influence very little of adjusting to liquid metal length to the return wave loss parameter of primary antenna.
(2), additional structure of the present invention is few and simple, antenna generally planar structure, easy to produce and process, is printed by both ends
L-type branch in metal ground can adjust the S of antenna well11And S21Parameter, and it is extra such as electricity without introducing
Hold the lumped parameter original papers such as inductance.
(3), the efficiency of two antennas is all sufficiently high in the present invention, can meet the needs of practical application, in high band two
The efficiency of antenna can reach 85% or so, and more than 60% radiation efficiency can be also reached in low-frequency range.
Brief description of the drawings
Fig. 1 is a kind of 4G MIMO antenna structure of mobile phole schematic diagrames based on liquid metal of the present invention, wherein：1 plane inverse-F
Antenna, 2 plane single pole sub antennas, 3 liquid metal bars, the L-type branch near 4 distributing points, the L-type branch of 5 board edges, 6
Metal ground body；
Fig. 2 emulates S for mimo antenna11Curve, three curves correspond to the liquid metal length of 0mm, 8mm and 16mm respectively；
Fig. 3 emulates S for mimo antenna21Curve, three curves correspond to the liquid metal length of 0mm, 8mm and 16mm respectively；
Fig. 4 emulates S for mimo antenna22Curve, three curves correspond to the liquid metal length of 0mm, 8mm and 16mm respectively；
Embodiment
Below in conjunction with the accompanying drawings and embodiment further illustrates the present invention.
The design of the present invention is as follows：Fig. 1 is a kind of 4G MIMO antenna structure of mobile phole signal based on liquid metal of the present invention
Figure.Including planar inverted-F antenna 1, plane single pole sub antenna 2, length-adjustable liquid metal bar 3, L-type metal branch 4,5, gold
Possession body 6.
Planar inverted-F antenna 1 is used as slave antenna, and plane single pole sub antenna 2 is used as primary antenna, utilizes surface both CURRENT DISTRIBUTION
Characteristic can substantially reduce mutual coupling degree between two antennas, reduce the difficulty of Antenna Design.Planar inverted-F antenna 1 is low
Frequency range is adjustable, changes planar inverted-F antenna 1 by adjusting the length of liquid metal bar in the low-frequency range of 698-960MHz
Resonant frequency, different liquid metal length correspond to different low-frequency resonant points, and can be covered under different liquid metal length
Cover the high band of 1710-2690MHz.Plane single pole sub antenna 1 can cover eight all working frequency range at the same time.Two antennas it
Between isolation can be higher than 10dB in all working frequency range.
According to the design as above invented, the present invention adopts the following technical scheme that：
Planar inverted-F antenna and plane single pole sub antenna are respectively placed at two short sides of circuit board, it is such to place symbol
Close the situation of actual antenna for mobile phone design.In the case of individually placed, two antennas can cover LTE700/GSM850/
This eight frequency ranges of GSM900/DCS/PCS/UMTS/LTE2300/LTE2500, do not increase in laying method of the invention and any
Under conditions of lumped-parameter element and additional structure, obvious change occurs for both S parameters, and the performance of planar inverted-F antenna changes
Change is especially apparent.
First close to planar inverted-F antenna side with increasing by L-type metal branch, the L-type branch is close to antenna in metal
Distributing point, for high band produce a resonance point, be operated in quarter-wave long pattern, resonant frequency about exists
Near 2700MHz.Thus, the high band of planar inverted-F antenna can realize all standing.
L-type metal ground branch, the length of the branch are added close to planar inverted-F antenna side along outer edge in metal
More than the half of circuit board broadside, for producing resonance in the low-frequency range of planar inverted-F antenna and improving the work(of isolation
Energy.The branch is stepped on circuit board short side direction, L-type branch lower edge and planar inverted-F antenna radiation metal strip away from
Change from along short side direction, this is the S of GSM900 frequency ranges in order to balance11Parameter and LTE700 frequency ranges S21Parameter.
Here is the final step processing done to planar inverted-F antenna, construction liquid metal channel and filling liquid metal.
Liquid metal bar is connected with the radiation metal strip of planar inverted-F antenna, and different length corresponds to different low band resonance frequencies.Structure
It is PMMA to make material used in liquid metal channel, and the introducing of the raceway groove can make the resonant frequency of planar inverted-F antenna to lower
Frequency shift (FS), suitably to select place position and PMMA blocks size.Finally drawn by simulation result, 2 arrive the thickness of 3mm
And the PMMA liquid metal channels for not covering L-type branch 5 in vertical direction disclosure satisfy that the antenna parameter requirement of low-frequency range.
Plane single pole sub antenna is adjusted, the antenna high band frequency shift (FS) of the resonant frequency to higher, it is first
First change the length for groove of opening a way in primary antenna, being extended makes resonant frequency lower limit be less than 1710MHz, afterwards by monopole
Increase the method for subbranch in length of antenna's branches end, make the S in high band22Parameter is less than -6dB.
Fig. 2,3,4 are to obtain S by 15.0 electromagnetic simulation softwares of CST11、S21、S22Curve, three curves point in each figure
The length L for not corresponding to liquid metal is 0mm, 8mm, 16mm.Wherein abscissa represents frequency, unit MHz, and ordinate unit is
dB.From figure 2 it can be seen that S can be made by adjusting the length of liquid metal11Change in the resonant frequency of low-frequency range.By above-mentioned
Adjustment, two antennas disclosure satisfy that the basic demand of 4G mimo antennas, S11And S22Parameter is less than -6dB, S in 1710-2690MHz22
Parameter is less than in -6dB, S in 698-960MHz11Parameter can be continuously adjustable covering 698-960MHz, the S between two antennas21
All it is higher than 10dB in full frequency band.
The present invention relates to a kind of 4G MIMO antenna for mobile phone based on liquid metal, which can realize 4G frequency ranges
MIMO functions, antenna are planar structure, and processing and manufacturing is simple.During liquid metal is adjusted, to plane single pole sub antenna
Smaller with the influence of planar inverted-F antenna high band, two antennas can be kept above the isolation of 10dB, day in full frequency band all the time
The enough high energy of line efficiency meets the requirement of practical application.
Claims (10)
- A kind of 1. 4G MIMO antenna for mobile phone based on liquid metal, it is characterised in that comprising a plane single pole sub antenna, one A planar inverted-F antenna, liquid metal channel, liquid metal are filled into the liquid metal bar formed in liquid metal channel, metal Ground body, two L-type metals ground branch；Wherein, plane single pole sub antenna is primary antenna, can cover low-frequency range 698- at the same time 960MHz and high band 1710-2690MHz；Planar inverted-F antenna is slave antenna, covers 1710-2690MHz frequency ranges, and pass through tune Save the equivalent covering 698-960MHz frequency ranges of liquid metal length；Isolation of two antennas in working frequency range is consistently higher than 10dB；Liquid metal channel is arranged at the side of planar inverted-F antenna, and slave antenna is adjusted by adjusting the length of liquid metal bar Resonance point in low-frequency range, the length of different liquid metal bars correspond to different low-frequency resonant frequencies；Two L-type metals The planar inverted-F antenna side of ground branch with being printed on metal body, for adjusting the high-frequency resonant point and low frequency of planar inverted-F antenna Resonance point and isolation.
- 2. the 4G MIMO antenna for mobile phone according to claim 1 based on liquid metal, it is characterised in that primary antenna, secondary day Line and the decoupling structure that branch is formed by liquid metal and L-type metal are printed on circuit board of mobile phone, and planar inverted-F antenna leads to Crossing ground hole, body is connected with metal.
- 3. the 4G MIMO antenna for mobile phone according to claim 1 based on liquid metal, it is characterised in that by adjusting liquid The length of state metal strip adjusts resonance point of the slave antenna in low-frequency range, to a certain fixed liquid metal strip length, -6dB bands Width is at least 10MHz, and resonance point is bigger closer to 960MHz, -6dB bandwidth.
- 4. the 4G MIMO antenna for mobile phone according to claim 1 based on liquid metal, it is characterised in that planar monopole Antenna and planar inverted-F antenna isolation are distributed in two short sides of circuit board of mobile phone.
- 5. the 4G MIMO antenna for mobile phone according to claim 1 based on liquid metal, it is characterised in that the low-frequency range For LTE700, GSM850 and GSM900, frequency 698-960MHz；The high band for DCS2300, PCS2300, UMTS2300, LTE2300 and LTE2500, frequency 1710-2690MHz.
- 6. the 4G MIMO antenna for mobile phone according to claim 4 based on liquid metal, it is characterised in that circuit board size For 60 × 120mm2, the size of planar inverted-F antenna is 20 × 60mm2, the size of plane single pole sub antenna is 15 × 60mm2。
- 7. the 4G MIMO antenna for mobile phone according to claim 1 based on liquid metal, it is characterised in that a L-type metal Ground branch close to planar inverted-F antenna distributing point, another L-type metal branch be located at circuit board of mobile phone edge；By hither plane The L-type metal of the distributing point of inverse-F antenna branch high band produce a resonance point, the L-type positioned at circuit board of mobile phone edge Metal branch be used for adjust resonance point of the planar inverted-F antenna in low-frequency range, two antennas can be realized in whole working frequency range Isolation higher than 10dB.
- 8. the 4G MIMO antenna for mobile phone according to claim 7 based on liquid metal, it is characterised in that positioned at mobile phone electricity The L-type metal of road edges of boards edge branch it is laterally stepped for two-stage, by with adjusting L-type metal between branch and liquid metal bar Fore-and-aft distance change, come take into account covering GSM900 frequency ranges and ensure LTE700 frequency range isolations requirement；Specifically, when this L-type metal branch apart from liquid metal bar fore-and-aft distance be less than about 4mm when, antenna for mobile phone can in the isolation of LTE700 frequency ranges Meet the requirements, but overlayable highest frequency also can be lower in the nearlyer low-frequency range of distance, and branch is apart from liquid when the L-type metal When metal strip fore-and-aft distance is more than about 3mm, antenna for mobile phone covering GSM900 frequency ranges.
- 9. the 4G MIMO antenna for mobile phone according to claim 1 based on liquid metal, it is characterised in that the liquid gold Belong in restructural 4G MIMO antenna for mobile phone, it is common with the iknsulating liquids such as deionized water or liquid polytetrafluoroethylene and liquid metal Be filled in liquid metal channel and the conduit that is attached thereto in, the pressure produced by Micropump can be passed accurately by iknsulating liquid Liquid metal is delivered to, the method for liquid metal driving can also be electrowetting method.
- 10. the 4G MIMO antenna for mobile phone according to claim 1 based on liquid metal, it is characterised in that planar monopole day The material of line, planar inverted-F antenna and metal ground is the solid metallic good conductor such as copper, aluminium, tin, circuit board material Rogers RO4350B, liquid metal material are the normal temperature liquid metals such as gallium-indium-tin alloy, and liquid metal channel material is PMMA, PDMS etc. The good insulating materials of plasticity.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018152797A (en) * | 2017-03-14 | 2018-09-27 | 株式会社パナソニックシステムネットワークス開発研究所 | Antenna device and electronic equipment including antenna device |
| CN108767442A (en) * | 2018-05-30 | 2018-11-06 | 杭州电子科技大学 | A kind of MIMO terminal antennas of the wide-band high isolation of no decoupling arrangements |
| CN109244648A (en) * | 2018-09-21 | 2019-01-18 | 中国科学院理化技术研究所 | Reconfigurable antenna and microstrip antenna |
| CN109713432A (en) * | 2019-01-14 | 2019-05-03 | 深圳市信维通信股份有限公司 | 5G mimo antenna system and handheld device |
| CN109888493A (en) * | 2019-03-11 | 2019-06-14 | 南京理工大学 | A kind of single-frequency beam scanning antennas based on liquid metal |
| CN110190385A (en) * | 2019-06-27 | 2019-08-30 | 中国科学院理化技术研究所 | A kind of antenna and communication apparatus and preparation method |
| CN110611155A (en) * | 2018-06-15 | 2019-12-24 | 北京梦之墨科技有限公司 | Rapid antenna deployment method and narrow-band antenna |
| CN112928471A (en) * | 2021-01-21 | 2021-06-08 | 维沃移动通信有限公司 | Electronic device and antenna switching method |
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| JP2018152797A (en) * | 2017-03-14 | 2018-09-27 | 株式会社パナソニックシステムネットワークス開発研究所 | Antenna device and electronic equipment including antenna device |
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| CN110611155A (en) * | 2018-06-15 | 2019-12-24 | 北京梦之墨科技有限公司 | Rapid antenna deployment method and narrow-band antenna |
| CN109244648A (en) * | 2018-09-21 | 2019-01-18 | 中国科学院理化技术研究所 | Reconfigurable antenna and microstrip antenna |
| CN109244648B (en) * | 2018-09-21 | 2023-11-07 | 中国科学院理化技术研究所 | Reconfigurable antenna and microstrip antenna |
| CN109713432A (en) * | 2019-01-14 | 2019-05-03 | 深圳市信维通信股份有限公司 | 5G mimo antenna system and handheld device |
| CN109888493A (en) * | 2019-03-11 | 2019-06-14 | 南京理工大学 | A kind of single-frequency beam scanning antennas based on liquid metal |
| CN109888493B (en) * | 2019-03-11 | 2020-04-07 | 南京理工大学 | Single-frequency beam scanning antenna based on liquid metal |
| CN110190385A (en) * | 2019-06-27 | 2019-08-30 | 中国科学院理化技术研究所 | A kind of antenna and communication apparatus and preparation method |
| CN112928471A (en) * | 2021-01-21 | 2021-06-08 | 维沃移动通信有限公司 | Electronic device and antenna switching method |
| CN112928471B (en) * | 2021-01-21 | 2024-02-27 | 维沃移动通信有限公司 | Electronic equipment and antenna switching method |
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