CN105552540B - A kind of three eight unit MIMO antenna for mobile phone of frequency of compact high-isolation - Google Patents
A kind of three eight unit MIMO antenna for mobile phone of frequency of compact high-isolation Download PDFInfo
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- CN105552540B CN105552540B CN201510975831.5A CN201510975831A CN105552540B CN 105552540 B CN105552540 B CN 105552540B CN 201510975831 A CN201510975831 A CN 201510975831A CN 105552540 B CN105552540 B CN 105552540B
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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
- H01Q1/38—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
- 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
- H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
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Abstract
The invention discloses a kind of compact three eight unit MIMO antenna for mobile phone of frequency of high-isolation, it is characterized in that, it include: rectangular floor (1), symmetrical expression is provided with 8 square holes on two short sides of the floor (1), and gap (4) are provided between the adjacent square hole；It is covered with rectangular substrate (2) on the floor (1), is provided with square (3) on the substrate (2) above square hole described in face；Antenna element patch is etched on the square (3)；Three eight unit MIMO antenna for mobile phone of frequency of a kind of compact high-isolation provided by the invention, isolation is good between antenna element patch, the high communication quality, small in size, is suitable for mobile phone 4G communication network.
Description
Technical field
The present invention relates to a kind of compact three eight unit MIMO antenna for mobile phone of frequency of high-isolation, more particularly to one kind to be suitable for hand
Machine 4G communication network, reduction antenna occupancy volume three eight unit MIMO antenna for mobile phone of frequency of compact high-isolation.
Background technique
The fast development of wireless technology so that the requirement to radio communication quality all the more improves, wireless communication technique from
Not Kaitian's line, as one and its important component, restricts the whole of mobile phone wireless transmission for the mobile terminals such as mobile phone
Body performance, traditional antenna for mobile phone is no longer satisfied the requirement of existing wireless telecommunications high-speed, high accuracy, in antenna
It is more urgent in terms of miniaturization and the requirement of multiaerial system.
MIMO technology proposes respectively in transmitting terminal and the more secondary transmitting antennas of receiving end setting and more secondary receiving antennas, then can be with
Using the multipath effect of wireless communication system, the performance of link is improved.MIMO can abundant development space resource, in limited frequency
Under spectrum resource and fixed transmission power, improves the communication quality (such as error rate) of each user or improve communication efficiency, in full
According to rate.MIMO can solve frequency resource contradiction more and more nervous at present, and not increase hardware design difficulty, but also can
To avoid because increasing transmission power due to bring electromagnetic radiation.However, because the space of cell phone system is limited, antenna element
Between coupling sharply reinforce with the increase of number of antennas or the reduction of antenna element spacing, this will certainly make antenna element
The antenna performances such as impedance bandwidth, antenna pattern, radiation efficiency be severely impacted.Therefore MIMO antenna for mobile phone is designed to
For a big hot spot.
Summary of the invention
The good, high communication quality that the technical problem to be solved by the invention is to provide isolations between a kind of antenna element patch,
Three eight unit MIMO antenna for mobile phone of frequency of compact high-isolation small in size；Further, the present invention provides a kind of antenna element patch
The good three eight unit MIMO antenna for mobile phone of frequency of compact high-isolation of piece miniaturization, performance.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of three eight unit MIMO antenna for mobile phone of frequency of compact high-isolation characterized by comprising rectangular floor,
Symmetrical expression is provided with 8 square holes on two short sides on the floor, is provided with gap between the adjacent square hole；Describedly
It is covered with rectangular substrate on plate, is provided with square on the substrate above square hole described in face；On the square
It is etched with antenna element patch.
The antenna element patch includes first antenna unit and the second antenna element；The square includes being located at the base
4 the first squares and 4 the second squares in the middle part of the substrate of plate periphery；Described is posted on first square
One antenna element；Second antenna element is posted on second square；The first antenna unit in same short side
And second between antenna element below the gap be broken line type；Under between two second antenna elements in same short side
The gap in face is the linear type parallel with the floor long side.
The gap of broken line type connects the square hole below between the adjacent first antenna unit and the second antenna element；Folding
The setting in the gap of line style under conditions of short distance between first antenna unit and the second antenna element, guarantees antenna
Performance simultaneously improves isolation between antenna element patch, keeps structure of the invention compact, small in size.
The opposite side of the square of two ends is first side, and the side that the square of two ends is opposite is
Second side；The opposite face of first square of the two of identical end is third side, first square of the two of identical end
Back be the 4th side；The first antenna unit includes the first metal strip for being affixed on the first side, and described first
One end of metal strip is connected with the one end for the second metal strip for being affixed on the 4th side, first metal strip and the second metal
Item is of same size and top margin with the upper surface flush of the square；The length of second metal strip is less than the 4th side
The length in face；The other end of first metal strip is connected with the one end for the third metal strip for being affixed on the third side；It is described
The width of third metal strip is less than the width of first metal strip and the upper surface flush of top margin and the square；Described
The length of three metal strips be less than the third side length, the other end of the third metal strip respectively with its horizontal connection
The 4th metal strip be connected with the fifth metal article of perpendicular connection；The length of 4th metal strip and third metal strip it
It is identical with the length of the third side, the end of the 4th metal strip with it is vertical to the 6th metal strip top be connected,
The length of 6th metal strip is identical as the height of the square, the end of the 6th metal strip be located at the substrate on
The 7th metal strip one end be connected, the end of the 7th metal strip is provided with the first short dot；The fifth metal item
Length is less than the height of the square, the bottom end of the fifth metal article with to the second side direction the horizontal-extending 8th
One end of metal strip is connected, and the other end of the 8th metal strip is connected with its 9th perpendicular metal strip, and the described 9th
The bottom end flush of the end of metal strip and the third side, the 9th metal strip are parallel with the 7th metal strip
The tenth metal strip one end be connected, the other end of the tenth metal strip with it is perpendicular and prolong to the first side direction
The 11st metal strip stretched is connected, and the end of the 11st metal strip is provided with the first feeding point；The third metal strip
The other end is also connected with one end of the 12nd metal strip, the 12nd metal strip be set on the upper surface of the square and with
The third metal strip is perpendicular；The other end of 12nd metal strip is connected with one end of the 13rd C-shaped metal strip,
The opening of 13rd metal strip is towards the second side；Article body of 12nd metal strip and the 14th metal strip
One end vertically connects, and the 13rd metal strip and the 14th metal strip are located at the two sides of the 12nd metal strip；Institute
The other end for stating the 14th metal strip is connect with one end of the 15th perpendicular metal strip, the 15th metal strip it is another
One end is connect with one end of the 16th C-shaped metal strip, the opening of the 16th metal strip towards the second side and
Inside the 13rd metal strip；13rd metal strip, the 14th metal strip, the 15th metal strip and the 16th gold medal
Belong to the upper surface that item is respectively positioned on the square.
The bending part of c-type is right angle.
The opposite face of second square of the two of identical end is the 5th side, second square of the two of identical end
Back is the 6th side；Second antenna element includes the 17th metal strip being affixed on the 5th side, and described
The upper surface flush of the top margin of 17 metal strips and second square, the length and the described 5th of the 17th metal strip
The length of side is identical, and the width of the 17th metal strip is less than the height of second square, the 17th metal strip
One end be connected with the one end for the 18th metal strip for being affixed on the second side, the length of the 18th metal strip is less than institute
The length of second side is stated, the width of the 18th metal strip is less than the width of the 17th metal strip；Described 17th
The other end of metal strip is connected with the one end for the 19th metal strip for being affixed on the first side, the 19th metal strip it is another
One end is connected with the 21st metal strip of its 20th metal strip connected horizontally and perpendicular connection respectively；Described
The sum of the length of 20 metal strips and the 19th metal strip is identical as the length of the first side, the 20th metal strip
End with it is vertical to the 22nd metal strip top be connected, the height of the length of the 22nd metal strip and the square
Identical, the end of the 22nd metal strip is connected with the one end for the 23rd metal strip being located on the substrate, described
The end of 23rd metal strip is provided with the second short dot；The length of 21st metal strip and the height of the square
It is identical, the bottom end of the 21st metal strip with it is horizontal-extending to the 5th side surface direction and be affixed on the of the first side
One end of 24 metal strips is connected, and the other end of the 24th metal strip is parallel with the 23rd metal strip
The 25th metal strip one end be connected, the end of the 25th metal strip is provided with the second feeding point；Described tenth
One end perpendicular connection of the other end of nine metal strips also with the 26th metal strip for being affixed on second square upper surface, institute
The other end for stating the 26th metal strip is connected with the middle part of the 27th metal strip, and the 27th metal strip is close to described
One end of 28th metal strip of one end and inverted L shape of the 5th side is connected, and the opening of the inverted L shape is towards the 6th side
Face；27th metal strip close to the 6th side one end it is vertical with one end of the 29th metal strip connect, institute
The other end for stating the 29th metal strip is connected with to one end of horizontal-extending 30th metal strip of the 5th side surface direction,
The other end of 30th metal strip is connected with one end of the 31st metal strip of inverted L shape, the 31st metal strip
It is open towards the 6th side；31st metal strip, the 30th metal strip and the 29th metal strip are respectively positioned on institute
It states in the 28th metal strip and is affixed on second square upper surface, the end of the 31st metal strip and be affixed on institute
The one end for stating the 32nd metal strip of the 6th side vertically connects, and the end of the 32nd metal strip and is affixed on described the
It is on six sides and connected to one end of horizontal-extending 33rd metal strip in the first side direction.
The side of 15th metal strip and the second side flush.
The width of 4th metal strip is less than the width of the third metal strip and the upper surface of top margin and the square
Flush；6th metal strip is affixed on the third side and side and the second side flush；The hardware
Category article, the 8th metal strip and the 9th metal strip are affixed on the third side；4th metal strip, the 6th metal strip,
Seven metal strips, fifth metal article, the 8th metal strip, the 9th metal strip, the tenth metal strip, the 11st metal strip, the 12nd metal
Article, the width of the 13rd metal strip, 14 metal strips, the 15th metal strip and the 16th metal strip it is all the same.
22nd metal strip be located in the first side and with the 6th side flush, the described 20th
The width of same size and being less than the 19th metal strip of the width of two metal strips and the 20th metal strip, described the
19 metal strips, the 18th metal strip, the 21st metal strip, the 23rd metal strip, the 24th metal strip, second
15 metal strips, the 26th metal strip, the 28th metal strip, the 29th metal strip, the 30th metal strip, the 31st
The width of metal strip and the 32nd metal strip is all the same；The width of 33rd metal strip is greater than the 17th metal
The width of item and the height for being less than the square, the length of the 33rd metal strip are less than the length of the 6th side；
The side of 29th metal strip and the 6th side flush.
The material on the floor includes copper；The material of the substrate and square is FR4；The substrate with a thickness of 1mm.
F-band, E frequency range and the D frequency range of the communications band covering LTE of the antenna element patch.
The distance between described antenna element patch of identical end is less than 10mm.
Antenna element patch is etched on the square of FR4 material of 10mm*10mm*5mm, is placed in a thickness of 1mm's
On the surface the big cuboid of FR4 (135mm*68.8mm*1mm, i.e. substrate).
It is an object of the invention to solve miniaturization and performance indicator of the mobile terminals such as mobile phone for multiaerial system
Reasonable problem.The present invention is bent and is covered on FR4 substrate square based on inverse-F antenna, and is opened by floor
Gap realizes the miniaturization of antenna element, guarantees its performance and good insulation request reaches antenna system each other
MIMO performance.
The present invention includes copper floor, FR4 substrate, copper antenna element patch.Antenna element patch is original with inverse-F antenna
Type is folded into stereochemical structure, is etched in the FR4 cuboid surface having a size of 10mm*10mm*5mm.Antenna element presentation pair
Claim place, the frequency range of first antenna unit: 1.86Ghz-1.94Ghz(VSWR < 2), 2.29Ghz-2.41Ghz(VSWR < 2),
2.53Ghz-2.68Ghz(VSWR < 2)；The frequency range of second antenna element: 1.87Ghz-1.93Ghz(VSWR < 2), 2.28Ghz-
2.68Ghz(VSWR < 2).Antenna is realized by cracking gap to underlying floor between antenna element patch and antenna element patch
Good insulated degree requirement each other between unit patch.
Compared with prior art, the present invention has the advantage that
First: the antenna element patch it is small-sized, the volume of occupancy only has the volume of 10mm*10mm*5mm, communication
Frequency range then covers the F-band of LTE, E frequency range, D frequency range；
Second: the isolation of realization -10dB in the case where antenna element patch only has at a distance from 9.6mm between antenna element patch
Degree, has fully ensured that the impedance bandwidth, gain and radiation direction of 8 antenna element patch each units.
Figure of description
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the enlarged drawing of part A in Fig. 1；
Fig. 3 is the enlarged drawing of part B in Fig. 1；
Fig. 4 is the plane outspread drawing of Fig. 2；
Fig. 5 is the plane outspread drawing of Fig. 3；
Fig. 6 is the structural schematic diagram on floor in the present invention；
Fig. 7 is the directional diagram that part A frequency is 1.9GHz in Fig. 1；
Fig. 8 is the directional diagram that part A frequency is 2.35GHz in Fig. 1；
Fig. 9 is the directional diagram that part A frequency is 2.58GHz in Fig. 1；
Figure 10 is the directional diagram that part B frequency is 1.9GHz in Fig. 1；
Figure 11 is the directional diagram that part B frequency is 2.35GHz in Fig. 1；
Figure 12 is the directional diagram that part B frequency is 2.58GHz in Fig. 1；
Figure 13 is the return loss of first antenna unit and the second antenna element in the present invention；Wherein S11 is represented first day
The return loss of line unit, S22 represent the return loss of the second antenna element；
Transmission coefficient in Figure 14 present invention between first antenna unit and other antenna elements；Wherein by upper end in Fig. 1
4 antenna element patches be from left to right successively named as 1., 2., 3., 4.；By 4 antenna element patches of lower end in Fig. 1 from
It is left-to-right to be successively named as 5., 6., 7., 8.；Wherein S11 represents return loss 1.；S12 represents the transmission coefficient 2. arrived 1.；
S13 represents the transmission coefficient 3. arrived 1.；S14 represents the transmission coefficient 4. arrived 1.；S15 represents the transmission coefficient 5. arrived 1.；S16 generation
6. table arrives transmission coefficient 1.；S17 represents the transmission coefficient 7. arrived 1.；S18 represents the transmission coefficient 8. arrived 1.；
Figure 15 is the transmission coefficient in the present invention between the second antenna element and other antenna elements；Wherein 1. S21 is represented
To transmission coefficient 2.；S22 represents return loss 2.；S23 represents the transmission coefficient 3. arrived 2.；S24 represents the biography 4. arrived 2.
Defeated coefficient；S25 represents the transmission coefficient 5. arrived 2.；S26 represents the transmission coefficient 6. arrived 2.；S27 represents the transmission system 7. arrived 2.
Number；8. S28 arrives transmission coefficient 2.；
Figure 16 is the gain of first antenna unit and the second antenna element of the present invention；Wherein Gain1 represents first antenna list
The gain of member, Gain2 represent the gain of the second antenna element.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Fig. 1 ~ Figure 16, a kind of compact three eight unit MIMO antenna for mobile phone of frequency of high-isolation, which is characterized in that packet
Include: rectangular floor 1, symmetrical expression is provided with 8 square holes on two short sides on the floor 1, between the adjacent square hole
It is provided with gap 4；Rectangular substrate 2 is covered on the floor 1, on the substrate 2 above square hole described in face
It is provided with square 3；Antenna element patch is etched on the square 3.
The antenna element patch includes first antenna unit 5 and the second antenna element 6；The square 3 includes being located at institute
State 4 the first squares of 2 periphery of substrate and 4 the second squares positioned at 2 middle part of substrate；It is posted on first square
The first antenna unit 5；Second antenna element 6 is posted on second square；Described first in same short side
The gap 4 below between antenna element 5 and the second antenna element 6 is broken line type；Two described second day in same short side
The gap 4 below between line unit 6 is the linear type parallel with 1 long side of floor.
The opposite side of the square 3 of two ends is first side, the opposite side of the square 3 of two ends
For second side；The opposite face of first square of the two of identical end is third side, the first party of the two of identical end
The back of block is the 4th side；The first antenna unit 5 includes the first metal strip 7 for being affixed on the first side, described
One end of first metal strip 7 is connected with the one end for the second metal strip 8 for being affixed on the 4th side, 7 He of the first metal strip
The upper surface flush that second metal strip 8 is of same size and top margin is with the square 3；The length of second metal strip 8 is small
Length in the 4th side；The other end of first metal strip 7 and the third metal strip 9 for being affixed on the third side
One end is connected；The width of the third metal strip 9 is less than the upper of the width of first metal strip 7 and top margin and the square 3
Surface flush；The length of the third metal strip 9 be less than the third side length, the third metal strip 9 it is another
End is connected with the fifth metal article 11 of its 4th metal strip 10 connected horizontally and perpendicular connection respectively；4th gold medal
Belong to the sum of the length of item 10 and third metal strip 9, the end of fourth metal strip 10 identical as the length of the third side
With it is vertical to 12 top of the 6th metal strip be connected, the length of the 6th metal strip 12 is identical as the height of the square 3, institute
The end for stating the 6th metal strip 12 is connected with the one end for the 7th metal strip 13 being located on the substrate 2, the 7th metal strip
13 end is provided with the first short dot 14；The length of the fifth metal item 11 be less than the square 3 height, the described 5th
The bottom end of metal strip 11 is connected with to one end of horizontal-extending 8th metal strip 15 in the second side direction, the 8th gold medal
The other end of category article 15 is connected with its 9th perpendicular metal strip 16, the end of the 9th metal strip 16 and the third
The bottom end flush of side, the 9th metal strip 16 tenth metal strip 17 one end parallel with the 7th metal strip 13
It is connected, the other end of the tenth metal strip 17 and the 11st metal that is perpendicular and extending to the first side direction
Item 18 is connected, and the end of the 11st metal strip 18 is provided with the first feeding point 19；The other end of the third metal strip 9 is also
Be connected with one end of the 12nd metal strip 20, the 12nd metal strip 20 be set on the upper surface of the square 3 and with institute
It is perpendicular to state third metal strip 9；One end phase of the other end and the 13rd C-shaped metal strip 21 of 12nd metal strip 20
Even, the opening of the 13rd metal strip 21 is towards the second side；Article body and the 14th of 12nd metal strip 20
One end of metal strip 22 vertically connects, and the 13rd metal strip 21 and the 14th metal strip 22 are located at the 12nd gold medal
Belong to the two sides of item 20；The other end of 14th metal strip 22 is connect with one end of the 15th perpendicular metal strip 23,
The other end of 15th metal strip 23 is connect with one end of the 16th C-shaped metal strip 24, the 16th metal strip
24 opening is towards the second side and is located inside the 13rd metal strip 21；13rd metal strip the 21, the tenth
Four metal strips 22, the 15th metal strip 23 and the 16th metal strip 24 are respectively positioned on the upper surface of the square 3.
The opposite face of second square of the two of identical end is the 5th side, second square of the two of identical end
Back is the 6th side；Second antenna element 6 includes the 17th metal strip 25 being affixed on the 5th side, described
The upper surface flush of the top margin of 17th metal strip 25 and second square, the length of the 17th metal strip 25 and institute
The length for stating the 5th side is identical, and the width of the 17th metal strip 25 is less than the height of second square, and the described tenth
One end of seven metal strips 25 is connected with the one end for the 18th metal strip 26 for being affixed on the second side, the 18th metal strip
26 length is less than the length of the second side, and the width of the 18th metal strip 26 is less than the 17th metal strip 25
Width；One end phase of the other end and the 19th metal strip 27 for being affixed on the first side of 17th metal strip 25
Even, the other end of the 19th metal strip 27 respectively with its 20th metal strip 28 connected horizontally and perpendicular connection
The 21st metal strip 29 be connected；The sum of length of 20th metal strip 28 and the 19th metal strip 27 and described first
The length of side is identical, the end of the 20th metal strip 28 with it is vertical to 30 top of the 22nd metal strip be connected, institute
The length for stating the 22nd metal strip 30 is identical as the height of the square 3, the end and position of the 22nd metal strip 30
It is connected in one end of the 23rd metal strip 31 on the substrate 2, the end of the 23rd metal strip 31 is provided with the
Two short dots 32；The length of 21st metal strip 29 is identical as the height of the square 3, the 21st metal strip
One end of 28 bottom end and the 24th metal strip 33 that is horizontal-extending and being affixed on the first side to the 5th side surface direction
It is connected, the other end of the 24th metal strip 33 two ten five metal parallel with the 23rd metal strip 31
One end of item 34 is connected, and the end of the 25th metal strip 34 is provided with the second feeding point 35；19th metal strip
One end perpendicular connection of 27 other end also with the 26th metal strip 36 for being affixed on second square upper surface, described
The other end of 26 metal strips 36 is connected with the middle part of the 27th metal strip 37, and the 27th metal strip 37 is close to institute
The one end for stating one end of the 5th side and the 28th metal strip 38 of inverted L shape is connected, and the opening of the inverted L shape is towards described
Six sides；27th metal strip 37 is vertical with one end of the 29th metal strip 39 close to one end of the 6th side
Connection, the other end of the 29th metal strip 39 with to horizontal-extending 30th metal strip 40 of the 5th side surface direction
One end be connected, the other end of the 30th metal strip 40 is connected with one end of the 31st metal strip 41 of inverted L shape, described
31st metal strip 41 is open towards the 6th side；31st metal strip 41, the 30th metal strip 40 and
29 metal strips 39 are respectively positioned in the 28th metal strip 38 and are affixed on second square upper surface, the third
The end of 11 metal strips 41 is vertical with the one end for the 32nd metal strip 42 for being affixed on the 6th side to be connect, the third
The end of 12 metal strips 42 with it is being affixed on the 6th side and to the first side direction the horizontal-extending 30th
One end of three metal strips 43 is connected.
The side of 15th metal strip 23 and the second side flush.
The width of 4th metal strip 10 is less than the upper of the width of the third metal strip 9 and top margin and the square 3
Surface flush；6th metal strip 12 is affixed on the third side and side and the second side flush；It is described
Fifth metal article 11, the 8th metal strip 15 and the 9th metal strip 16 are affixed on the third side；4th metal strip 10,
6th metal strip 12, the 7th metal strip 13, fifth metal article 11, the 8th metal strip 15, the 9th metal strip 16, the tenth metal strip
17, the 11st metal strip 18, the 12nd metal strip 20, the 13rd metal strip 21,14 metal strips 22,23 and of the 15th metal strip
The width of 16th metal strip 24 is all the same.
22nd metal strip 30 be located in the first side and with the 6th side flush, described second
The width of same size and being less than the 19th metal strip 27 of the width of 12 metal strips 30 and the 20th metal strip 28
Degree, the 19th metal strip 27, the 18th metal strip 26, the 21st metal strip 29, the 23rd metal strip 31, the
24 metal strips 33, the 25th metal strip 34, the 26th metal strip 36, the 28th metal strip 38, the 29th gold medal
The width for belonging to article the 39, the 30th metal strip 40, the 31st metal strip 41 and the 32nd metal strip 42 is all the same；The third
The width of 13 metal strips 43 is greater than the width of the 17th metal strip 25 and is less than the height of the square 3, the third
The length of 13 metal strips 43 is less than the length of the 6th side；The side and the described 6th of 29th metal strip 39
Side flush.
The material on the floor 1 includes copper；The material of the substrate 2 and square 3 is FR4；The substrate 2 with a thickness of
1mm。
F-band, E frequency range and the D frequency range of the communications band covering LTE of the antenna element patch.
The distance between described antenna element patch of identical end is less than 10mm.
S parameter curve of the Figure 13 between first antenna unit 5 between the second antenna element 6, as can be seen from Figure
In frequency band 1.88-1.92Ghz, 2.3-2.4Ghz, 2.54-2.66Ghz, S parameter is below -10dB.Cover LTE F frequency
Section, E frequency range, D frequency range, frequency range internal antenna have good impedance matching property.
The S of first antenna unit 5 and the second antenna element 6 and other seven antenna elements is set forth in Figure 14 and Figure 15
Parameter.Because the S parameter of the symmetry of antenna system, antenna also has symmetry, first antenna unit 5 and the second antenna are provided
The S parameter of unit 6 just represents the S parameter of entire antenna element.Most short distance between two neighboring antenna element as seen from the figure
From the isolation for being only also able to achieve -10dB in the case where 9.6mm, the isolation between non-conterminous unit realize at least -
The isolation of 15dB or more.
Fig. 7 ~ Figure 12 be set forth first antenna unit 5 and the second antenna element 6 1.9Ghz, 2.35Ghz,
Antenna pattern when 2.58Ghz, antenna can receive the signal from multiple directions simultaneously in each frequency range, also can be simultaneously
Emit signal to multiple directions, can be widely applied for the mobile terminals such as mobile phone.
Figure 16 gives the gain of first antenna unit 5 and the second antenna element 6, and antenna is in frequency range as seen from the figure
With good radiation characteristic, good performance is realized in conjunction with the visible entire antenna of antenna pattern.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of three eight unit MIMO antenna for mobile phone of frequency of compact high-isolation characterized by comprising rectangular floor (1),
Symmetrical expression is provided with 8 square holes on two short sides of the floor (1), and gap (4) are provided between the adjacent square hole；
It is covered with rectangular substrate (2) on the floor (1), the side of being provided on the substrate (2) above square hole described in face
Block (3)；Antenna element patch is etched on the square (3)；
The antenna element patch includes first antenna unit (5) and the second antenna element (6)；The square (3) includes being located at
4 the first squares of substrate (2) periphery and 4 the second squares being located in the middle part of the substrate (2)；On first square
Post the first antenna unit (5)；Second antenna element (6) is posted on second square；In same short side
The first antenna unit (5) and the second antenna element (6) between below the gap (4) be broken line type；Same short side
On two second antenna elements (6) between below the gap (4) be the straight line parallel with the floor (1) long side
Type；
The opposite side of the square (3) of two ends is first side, the opposite side of the square (3) of two ends
For second side；The opposite face of first square of the two of identical end is third side, the first party of the two of identical end
The back of block is the 4th side；The first antenna unit (5) includes the first metal strip (7) for being affixed on the first side,
One end of first metal strip (7) is connected with the one end for the second metal strip (8) for being affixed on the 4th side, first gold medal
Category item (7) and the upper surface flush that the second metal strip (8) is of same size and top margin is with the square (3)；Second gold medal
The length for belonging to article (8) is less than the length of the 4th side；The other end of first metal strip (7) and it is affixed on the third side
One end of the third metal strip (9) in face is connected；The width of the third metal strip (9) is less than the width of first metal strip (7)
The upper surface flush of degree and top margin and the square (3)；The length of the third metal strip (9) is less than the third side
Length, the other end of the third metal strip (9) respectively with its 4th metal strip (10) connected horizontally and perpendicular company
The fifth metal item (11) connect is connected；The sum of length of 4th metal strip (10) and third metal strip (9) and the third
The length of side is identical, the end of the 4th metal strip (10) with it is vertical to the 6th metal strip (12) top be connected, it is described
The length of 6th metal strip (12) is identical as the height of the square (3), the end of the 6th metal strip (12) be located at institute
The one end for stating the 7th metal strip (13) on substrate (2) is connected, and the end of the 7th metal strip (13) is provided with the first short circuit
Point (14)；The length of the fifth metal item (11) is less than the height of the square (3), the bottom end of the fifth metal item (11)
Be connected with to one end of horizontal-extending 8th metal strip (15) in the second side direction, the 8th metal strip (15) it is another
One end is connected with its 9th perpendicular metal strip (16), end and the third side of the 9th metal strip (16)
Bottom end flush, the 9th metal strip (16) tenth metal strip (17) one end parallel with the 7th metal strip (13)
It is connected, the other end of the tenth metal strip (17) and the 11st gold medal that is perpendicular and extending to the first side direction
Belong to item (18) to be connected, the end of the 11st metal strip (18) is provided with the first feeding point (19)；The third metal strip (9)
The other end be also connected with one end of the 12nd metal strip (20), the 12nd metal strip (20) is set to the square (3)
Upper surface on and it is perpendicular with the third metal strip (9)；The other end of 12nd metal strip (20) and C-shaped the
One end of 13 metal strips (21) is connected, and the opening of the 13rd metal strip (21) is towards the second side；Described tenth
Article body of two metal strips (20) is vertical with one end of the 14th metal strip (22) to be connect, the 13rd metal strip (21) and the tenth
Four metal strips (22) are located at the two sides of the 12nd metal strip (20)；The other end of 14th metal strip (22) with
One end of the 15th perpendicular metal strip (23) connects, the other end of the 15th metal strip (23) and C-shaped the
One end of 16 metal strips (24) connects, and the opening of the 16th metal strip (24) towards the second side and is located at described
13rd metal strip (21) is internal；13rd metal strip (21), the 14th metal strip (22), the 15th metal strip (23) and
16th metal strip (24) is respectively positioned on the upper surface of the square (3).
2. a kind of compact three eight unit MIMO antenna for mobile phone of frequency of high-isolation according to claim 1, it is characterised in that: phase
Opposite face with two second squares of end is the 5th side, and the back of second square of the two of identical end is the
Six sides；Second antenna element (6) includes the 17th metal strip (25) being affixed on the 5th side, and the described 17th
The upper surface flush of the top margin of metal strip (25) and second square, the length of the 17th metal strip (25) with it is described
The length of 5th side is identical, and the width of the 17th metal strip (25) is less than the height of second square, and the described tenth
One end of seven metal strips (25) is connected with the one end for the 18th metal strip (26) for being affixed on the second side, the 18th gold medal
The length for belonging to item (26) is less than the length of the second side, and the width of the 18th metal strip (26) is less than the described 17th
The width of metal strip (25)；The other end of 17th metal strip (25) and the 19th metal strip for being affixed on the first side
(27) one end is connected, the other end of the 19th metal strip (27) respectively with its 20th metal strip connected horizontally
(28) it is connected with the 21st metal strip (29) of perpendicular connection；20th metal strip (28) and the 19th metal strip
(27) the sum of length is identical as the length of the first side, the end of the 20th metal strip (28) with it is vertical to
22 metal strips (30) top is connected, and the length of the 22nd metal strip (30) is identical as the height of the square (3),
One end phase of the end of 22nd metal strip (30) and the 23rd metal strip (31) being located on the substrate (2)
Even, the end of the 23rd metal strip (31) is provided with the second short dot (32)；21st metal strip (29)
Length is identical as the height of the square (3), the bottom end of the 21st metal strip (28) with to the 5th side surface direction level
One end of the 24th metal strip (33) that is extending and being affixed on the first side is connected, the 24th metal strip (33)
One end of the other end two ten five metal strip (34) parallel with the 23rd metal strip (31) be connected, described the
The end of 25 metal strips (34) is provided with the second feeding point (35)；The other end of 19th metal strip (27) also with patch
In the perpendicular connection in one end of the 26th metal strip (36) of second square upper surface, the 26th metal strip
(36) the other end is connected with the middle part of the 27th metal strip (37), and the 27th metal strip (37) is close to the described 5th
One end of side is connected with one end of the 28th metal strip (38) of inverted L shape, and the opening of the inverted L shape is towards the 6th side
Face；27th metal strip (37) is vertical with one end of the 29th metal strip (39) close to one end of the 6th side
Connection, the other end of the 29th metal strip (39) with to horizontal-extending 30th metal strip of the 5th side surface direction
(40) one end is connected, one end of the 31st metal strip (41) of the other end and inverted L shape of the 30th metal strip (40)
It is connected, the 31st metal strip (41) is open towards the 6th side；31st metal strip (41), the 30th
Metal strip (40) and the 29th metal strip (39) are respectively positioned in the 28th metal strip (38) and are affixed on described second
Square upper surface, the end of the 31st metal strip (41) and the 32nd metal strip (42) for being affixed on the 6th side
One end vertically connect, the end of the 32nd metal strip (42) with it is being affixed on the 6th side and to described first
One end of horizontal-extending 33rd metal strip (43) of side surface direction is connected.
3. a kind of compact three eight unit MIMO antenna for mobile phone of frequency of high-isolation according to claim 1, it is characterised in that: institute
State the 15th metal strip (23) side and the second side flush.
4. a kind of compact three eight unit MIMO antenna for mobile phone of frequency of high-isolation according to claim 1, it is characterised in that: institute
The width for stating the 4th metal strip (10) is less than the width of the third metal strip (9) and the upper surface of top margin and the square (3)
Flush；6th metal strip (12) is affixed on the third side and side and the second side flush；Described
Five metal strips (11), the 8th metal strip (15) and the 9th metal strip (16) are affixed on the third side；4th metal
Article (10), the 6th metal strip (12), the 7th metal strip (13), fifth metal article (11), the 8th metal strip (15), the 9th metal strip
(16), the tenth metal strip (17), the 11st metal strip (18), the 12nd metal strip (20), the 13rd metal strip (21), 14 gold medals
The width for belonging to article (22), the 15th metal strip (23) and the 16th metal strip (24) is all the same.
5. a kind of compact three eight unit MIMO antenna for mobile phone of frequency of high-isolation according to claim 2, it is characterised in that: institute
State the 22nd metal strip (30) be located in the first side and with the 6th side flush, the 22nd metal
Article width of (30) and the of same size of the 20th metal strip (28) and the width for being less than the 19th metal strip (27),
19th metal strip (27), the 18th metal strip (26), the 21st metal strip (29), the 23rd metal strip
(31), the 24th metal strip (33), the 25th metal strip (34), the 26th metal strip (36), the 28th metal strip
(38), the 29th metal strip (39), the 30th metal strip (40), the 31st metal strip (41) and the 32nd metal strip
(42) width is all the same；The width of 33rd metal strip (43) be greater than the 17th metal strip (25) width and
Less than the height of the square (3), the length of the 33rd metal strip (43) is less than the length of the 6th side；It is described
The side of 29th metal strip (39) and the 6th side flush.
6. a kind of compact three eight unit MIMO antenna for mobile phone of frequency of high-isolation according to claim 1, it is characterised in that: institute
The material for stating floor (1) includes copper；The material of the substrate (2) and square (3) is FR4；The substrate (2) with a thickness of
1mm。
7. a kind of compact three eight unit MIMO antenna for mobile phone of frequency of high-isolation according to claim 1, it is characterised in that: institute
State F-band, E frequency range and the D frequency range of the communications band covering LTE of antenna element patch.
8. a kind of compact three eight unit MIMO antenna for mobile phone of frequency of high-isolation according to claim 1, it is characterised in that: phase
The distance between described antenna element patch with end is less than 10mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510975831.5A CN105552540B (en) | 2015-12-22 | 2015-12-22 | A kind of three eight unit MIMO antenna for mobile phone of frequency of compact high-isolation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510975831.5A CN105552540B (en) | 2015-12-22 | 2015-12-22 | A kind of three eight unit MIMO antenna for mobile phone of frequency of compact high-isolation |
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| CN105552540A CN105552540A (en) | 2016-05-04 |
| CN105552540B true CN105552540B (en) | 2019-03-12 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450752B (en) * | 2016-08-30 | 2020-02-18 | 电子科技大学 | MIMO antenna for realizing high isolation of smart phone |
| CN106571514A (en) * | 2016-10-10 | 2017-04-19 | 南京信息工程大学 | Broadband LTE antenna unit |
| CN106329065B (en) * | 2016-10-12 | 2024-03-15 | 南京信息工程大学 | Novel multi-frequency MIMO mobile phone antenna |
| CN207677073U (en) * | 2017-11-24 | 2018-07-31 | 深圳市信维通信股份有限公司 | 5G mimo antennas system and handheld device |
| CN108649330A (en) * | 2018-03-21 | 2018-10-12 | 杭州电子科技大学 | A kind of eight unit mimo antennas suitable for 5G mobile terminals |
| CN109149067B (en) * | 2018-08-03 | 2021-07-06 | 瑞声精密制造科技(常州)有限公司 | Antenna system and mobile terminal |
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