CN105140651B - Carry on the back chamber slot antenna configurations - Google Patents
Carry on the back chamber slot antenna configurations Download PDFInfo
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- CN105140651B CN105140651B CN201510661928.9A CN201510661928A CN105140651B CN 105140651 B CN105140651 B CN 105140651B CN 201510661928 A CN201510661928 A CN 201510661928A CN 105140651 B CN105140651 B CN 105140651B
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- slot antenna
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Abstract
The invention discloses one kind to carry on the back chamber slot antenna configurations, including a metal cavitg, the metal cavitg includes the first chamber portion and the second chamber portion, first chamber portion and the second chamber portion are connected L-shaped, formed with the first slot antenna on the upper surface of first chamber portion and outer surface, formed with the second slot antenna on the upper surface of second chamber portion and outer surface.The back of the body chamber slot antenna can be placed on the corner of portable radio machine, occupy little space, meanwhile, the reception and transmission of signal can be realized in the case where not influenceed interference by other conductive structures in equipment.In an only distributing point, 2.4GHz and 5GHz double radio band resonance can be realized.
Description
Technical field
The present invention relates to a kind of antenna structure, more particularly to a kind of back of the body chamber slot antenna configurations.
Background technology
In the prior art, the existing Patents of chamber slot antenna are carried on the back, such as 4733245 A of A, US of US 6160522.Often
Rule back of the body chamber slot antenna includes resonance metal chamber, and this resonance metal chamber has the slot antenna fed by probe, but such
Cavity needs very big space.Another method used is that disresonance chamber is placed on around resonant antenna structure to make
For micro-strip paster antenna or there is the unipole antenna of dielectric window.This antenna has been described in US 8125394 B2, US
8773310 B2,US 20110050509 A1,US 8325094 B2.These antenna can make in portable radio machine
With, such as mobile phone, tablet personal computer or notebook computer.One of advantage of this structure is, due to the metallic walls of cavity
Presence, occur under the interference for the other elements that wireless receiving or transmission can be on without PCB.But still need to take larger sky
Between.
The content of the invention
The technical problems to be solved by the invention are：One kind is provided and can be placed in portable radio machine corner, and can be answered
Back of the body chamber slot antenna for double radio bands.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：One kind back of the body chamber slot antenna configurations, including
One metal cavitg, the metal cavitg include the first chamber portion and the second chamber portion, first chamber portion and second
Chamber portion be connected it is L-shaped, it is described formed with the first slot antenna on the upper surface of first chamber portion and outer surface
Formed with the second slot antenna on the upper surface of second chamber portion and outer surface.
The beneficial effects of the present invention are：Metal cavitg is L-type, can be advantageously placed at portable radio machine
Corner, occupy little space, meanwhile, connecing for signal can be realized in the case where not influenceed interference by other conductive structures in equipment
Receive and send.
Brief description of the drawings
Fig. 1 is the aerial mounting structure schematic diagram of the present invention；
Fig. 2 a are the antenna structure view of the embodiment of the present invention one；
Fig. 2 b are the antenna feed structure schematic diagram of the embodiment of the present invention one；
Fig. 3 is the antenna structure view of the embodiment of the present invention two；
Fig. 4 is the S11 (return loss characteristic) and global radiation efficiency of antenna in the embodiment of the present invention one and embodiment two；
Fig. 5 is the antenna feed structure schematic diagram of the embodiment of the present invention three；
Fig. 6 a are the circuit diagram of matching network in the embodiment of the present invention four；
Fig. 6 b are the connection diagram of matching network in the embodiment of the present invention four；
Fig. 7 is the S11 and global radiation efficiency of the middle antenna of the embodiment of the present invention three and example IV；
Fig. 8 is that embodiment one and embodiment two cover the structure general illustration after PC-ABS material layers；
Fig. 9 is that embodiment three and example IV cover the structure general illustration after PC-ABS material layers.
Label declaration：
1st, portable radio machine；2nd, chamber slot antenna is carried on the back；3rd, the first chamber portion；4th, the second chamber portion；5th, upper table
Face；6th, outer surface；7th, inner surface；8th, first the first branch of slot antenna；9th, first the second branch of slot antenna；10th,
Two the first branches of slot antenna；11st, second the second branch of slot antenna；12nd, metal patch；13rd, antenna feed point；14th, feed
Cable；15th, outer conductor；16th, inner wire；17th, matching network；18th, capacitor；19th, inductance；20th, 50 ohm of ports；21、PC-
ABS material layer.
Embodiment
To describe the technology contents of the present invention, the objects and the effects in detail, below in conjunction with embodiment and coordinate attached
Figure is explained in detail.
The design of most critical of the present invention is：Metal cavitg is L-type, and upper surface and outer surface are respectively formed with gap day
Line, slot antenna are encouraged and supported by metal cavitg.
It is empty to Fig. 3, Fig. 5 to Fig. 6 b and Fig. 8 to Fig. 9, one kind back of the body chamber slot antenna configurations, including a metal to refer to Fig. 1
Chamber, the metal cavitg include the first chamber portion 3 and the second chamber portion 4, the cavity portion of the first chamber portion 3 and second
Points 4 be connected it is L-shaped, formed with the first slot antenna on the upper surface 5 of first chamber portion 3 and outer surface 6, described the
Formed with the second slot antenna on the upper surface 5 of two chamber portions 4 and outer surface 6.
It was found from foregoing description, the beneficial effects of the present invention are：Metal cavitg is L-type, can be advantageously placed at
The corner of portable radio machine 1, occupies little space, meanwhile, can be not by other conductions on portable radio machine 1
The reception and transmission of signal are realized under the influence interference of structure.
Further, the corner of the L-type is right angle or fillet.
It was found from foregoing description：It is applicable to the portable radio machine 1 of different profiles.
Further, one end of first slot antenna is connected with one end of the second slot antenna in the corner of L-type,
The other end of first slot antenna and the second slot antenna is hanging.
Further, first slot antenna or the second slot antenna include the first branch for be arrangeding in parallel and the respectively
Two branches, first branch are located at the outer surface 6 of metal cavitg, and second branch is located at the upper surface 5 of metal cavitg.
Further, in addition to a metal patch 12, the metal patch 12 connect first branch and the second branch.
Further, in addition to antenna feed point 13 and the feed cable 14 that is electrically connected with the antenna feed point 13, institute
The lower section of inner surface 7 for stating the first chamber portion is provided with an aperture, direction of the feed cable 14 along the second chamber portion 4
Extension, by the aperture and passes through first chamber portion 3.
It was found from foregoing description：In an only distributing point 13, double radio bands that 2.4GHz and 5GHz can be achieved are humorous
Shake；Metal patch 12 is set, the bandwidth in 5GHz radio band can be increased, and improve efficiency；Simultaneously, it is not necessary to any volume
Outer resonance structure, prevent from reducing antenna efficiency because of the loss of metal.
Further, in addition to antenna feed point 13 and the feed cable 14 that is electrically connected with the antenna feed point 13, institute
The inner surface 7 that feed cable 14 is arranged on second chamber portion 4 is stated, the antenna feed point 13 is empty located at described second
The upper surface 5 of cavity segment 4.
It was found from foregoing description：It need not be punched on metal cavitg, feed cable 14 can be welded on the second cavity portion
Points 4 inner surface 7 is without through the first chamber portion 3.
Further, in addition to matching network 17, the matching network 17 are fed located at the feed cable 14 and antenna
Between point 13.
Further, the matching network 17 includes the capacitor 18 and an inductance 19 of two series connection, the inductance 19
One end is connected between two capacitors 18, other end ground connection.
It was found from foregoing description：Antenna efficiency is improved, can preferably meet efficiency requirements of the antenna in 5GHz frequency bands.
Further, in addition to PC-ABS material layers 21, the PC-ABS material layers 21 cover the upper of the metal cavitg
Surface 5 and outer surface 6.
It was found from foregoing description：After covering PC-ABS material layers, slot antenna is invisible outside portable radio machine,
Certain protective effect is played to antenna simultaneously.
Embodiment one
Fig. 1, Fig. 2 a and Fig. 2 b are refer to, embodiments of the invention one are：One kind back of the body chamber slot antenna configurations, suitable for hand
The portable radio machines such as machine, tablet personal computer, palm PC 1, the antenna structure include a metal cavitg, the metal cavitg
Including the first chamber portion 3 and the second chamber portion 4, first chamber portion 3 is connected L-shaped with the second chamber portion 4.
As shown in figure 1, the back of the body chamber slot antenna 2 can be placed on the corner of portable radio machine 1；Alternatively, institute
The corner for stating L-type is right angle or fillet, can preferably be adapted to the different shape of portable radio machine 1.Metal cavitg bag
Upper surface 5, outer surface 6 and inner surface 7 are included, and the upper surface 5 and outer surface 6 can be bonded with the shell of equipment 1.
Back of the body chamber slot antenna 2 is placed on the corner of portable radio machine 1, can not by other conductive structures in equipment,
Under the earth plate on display screen, PCB and the influence or interference of other elements, the reception and transmission of signal are realized.
As shown in Figure 2 a, on the upper surface 5 of first chamber portion 3 and outer surface 6 formed with the first slot antenna,
Formed with the second slot antenna on the upper surface 5 of second chamber portion 4 and outer surface 6；First slot antenna
One end is connected with one end of the second slot antenna in the corner of L-type, first slot antenna and the second slot antenna it is another
One end is hanging；First slot antenna or the second slot antenna include the first branch and the second branch be arrangeding in parallel respectively,
First branch is located at the outer surface 6 of metal cavitg, and second branch is located on the upper surface 5 of metal cavitg；First
Slot antenna includes first slot antenna the first branch 8 and first the second branch of slot antenna 9, and the second slot antenna includes second
Slot antenna the first branch 10 and second the second branch of slot antenna 11, first slot antenna the first branch 8 and the second gap day
The first branch of line 10 is located at the outer surface 6 of metal cavitg, and first slot antenna the second branch 9 and the second slot antenna second divide
Branch 11 is located at the upper surface 5 of metal cavitg；The shape of the branch 8-11 is not unique, that is to say, that can be shown in Fig. 2 a
Shape or other can allow antenna have required frequency band resonance shape.Preferably, as illustrated, described
One branches into strip, and described second branches into U-shaped.
The long L of the length of first chamber portion 3 and second chamber portion 4 is 25-40mm, preferably 32mm, wide W
It is 3-8mm, preferably 5mm, high H is 3-10mm, preferably 6mm.
As shown in Figure 2 b, the back of the body chamber slot antenna 2 also includes antenna feed point 13 and is electrically connected with the antenna feed point 13
The feed cable 14 connect, the antenna feed point 13 is located at the first chamber portion 3, alternatively, positioned at the first slot antenna first
Lower edge of the branch 8 close to corner；The lower section of inner surface 7 of first chamber portion 3 is provided with an aperture, alternatively, institute
Stating aperture can be from anywhere in the first chamber portion 3；Prolong in direction of the feed cable 14 along the second chamber portion 4
Stretch, by the aperture and pass through first chamber portion 3；Distributing point 13 directly can be connected with feed cable 14, also may be used
To be connected as illustrated by one section of inner wire 16 and one section of outer conductor 15 with feed cable 14.The inner wire 16 is empty first
The outer surface 6 of cavity segment 3 connects up, can be inside metal cavitg；Outer conductor 15 is then extended on the outside of metal cavitg.
Embodiment two
Fig. 3 is refer to, embodiments of the invention two and the difference of embodiment one are：The back of the body chamber slot antenna 2 also includes
One metal patch 12, the metal patch 12 connect first branch and the second branch, and the metal patch can be one
Or it is multiple, for connecting first gap the first branch 8 and first the second branch of gap 9, and/or second the first branch of slot antenna
10 and second the second branch of slot antenna 11.
By introducing metal patch 12, change the current pass of electric current, to increase the bandwidth in 5GHz radio band, and
Improve antenna radiation efficiency.
The analog result of the S parameter and global radiation efficiency that are illustrated in figure 4 the embodiment of the present invention one and embodiment two compares
Schematic diagram, wherein " with short " are the result of embodiment two.The S parameter tolerance interval of usual antenna match be less than-
6dB, it can be seen that both can meet to require in the matching performance of 2.4GHz frequency ranges, but the one of 5GHz frequency ranges
It is then slightly poor on a little frequencies, but global radiation efficiency has respectively reached -7dB and -6dB in 2.4GHz and 5GHz frequency bands, meets WIFI
The design requirement of antenna, therefore, the result of above-mentioned S parameter is also acceptable.In addition, it could be seen that the antenna of embodiment two
The radiation efficiency of structure compares embodiment one, increases in 5GHz frequency bands, is then declined slightly in 2.4GHz frequency bands.
Embodiment three
Fig. 5 is refer to, embodiments of the invention three and the difference of embodiment one are：The position of distributing point and feed cable
It is different.In addition, the first branch of slot antenna and the second branch location are different from embodiment one in Fig. 5, the first branch exists in Fig. 5
Upper surface, the second branch is in outer surface, but actually it can also be identical with embodiment one.
The feed cable 14 of the present embodiment is arranged on the inner surface 7 of second chamber portion 4, the antenna feed
Point 13 is in second the first branch of slot antenna 10 of the upper surface 5 of the second chamber portion 4.
Identical with embodiment one, distributing point 13 directly can be connected with feed cable 14, can be as illustrated by one section
Conductor 16 and one section of outer conductor 15 are connected with feed cable 14, but the inner wire 16 can be in the upper of the second chamber portion 4
Surface 5 connects up, and the outer conductor 15 is outside metal cavitg.The present embodiment need not punch on metal cavitg surface, and present
Electrical cables 14 can be easily welded on the inner surface 7 of the second chamber portion 4 without through the first chamber portion
3, improve feeding flexibility.
Example IV
Embodiments of the invention four and the difference of embodiment three are：Set between feed cable 14 and antenna feed point 13
Put a matching network 17.It is the circuit diagram of matching network as shown in Figure 6 a, is as shown in Figure 6 b the annexation of matching network.Institute
Stating matching network 17 includes the capacitor 18 and an inductance 19 of two series connection, and described one end of inductance 19 is connected in two capacitors 18
Between, other end ground connection；One end of capacitor 18 of two series connection electrically connects the feed cable by 50 ohm of ports 20,
The other end connects antenna feed point；Wherein, C1=0.6pF, C2=0.8pF, L1=7.4nH；Alternatively, the matching network 17
Can also be other structures, this depends on S11 measured value.Matching network matches antenna impedance as close possible to 50 ohm of feedbacks
Source impedance, this ensures feeding source to the transimission power that antenna is maximum, because there may be minimum anti-due to impedance mismatch
Penetrate.Alternatively, matching network 17 can be placed in metal cavitg.
The analog result of the S parameter and global radiation efficiency that are illustrated in figure 7 the embodiment of the present invention three and example IV compares
Schematic diagram, wherein " MN " is the result of example IV.It can be seen that the antenna of embodiment three meets in 2.4GHz frequency bands
Requirement, and in 5GHz frequency bands most of frequency band requirement, it is but relatively low for some high frequency bands in 5GHz frequency bands, antenna efficiency.
The introducing of matching network then substantially improves the S parameter and radiation efficiency of 5GHz frequency ranges in example IV, can meet 5GHz
The efficiency requirements of frequency band.
Embodiment five
Fig. 8 and Fig. 9 are refer to, embodiments of the invention five are the optimization of above-described embodiment, and the back of the body chamber slot antenna 2 also wraps
PC-ABS material layers 21 are included, the PC-ABS material layers 21 cover upper surface 5 and the outer surface 6 of the metal cavitg；It is optional
Ground, the thickness of PC-ABS material layers 21 are 0.5-2mm, preferably 1mm.
Fig. 8 is that embodiment one and embodiment two cover the structure general illustration after PC-ABS material layers 21；Fig. 9 is implementation
Structure general illustration after example three and example IV covering PC-ABS material layers 21.
Because metal cavitg covers PC-ABS material layers 21, antenna appearance simple and beautiful, while one can be played to antenna
Fixed protective effect.
In summary, back of the body chamber slot antenna configurations provided by the invention, can be placed in the corner of portable radio machine, account for
It is small with space；In an only distributing point, 2.4GHz and 5GHz dual-frequency resonances are realized；Simultaneously, it is not necessary to any extra
Resonance structure, prevent from reducing antenna efficiency because of the loss of metal；It is and specious.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made, or the technical field of correlation is directly or indirectly used in, similarly include
In the scope of patent protection of the present invention.
Claims (9)
1. one kind back of the body chamber slot antenna configurations, including a metal cavitg, it is characterised in that：The metal cavitg includes the first cavity
Part and the second chamber portion, first chamber portion and the second chamber portion be connected it is L-shaped, first chamber portion
Formed with the first slot antenna on upper surface and outer surface, formed on the upper surface of second chamber portion and outer surface
There is the second slot antenna；
One end of first slot antenna is connected with one end of the second slot antenna in the corner of L-type, first gap
The other end of antenna and the second slot antenna is hanging.
2. back of the body chamber slot antenna configurations according to claim 1, it is characterised in that：The corner of the L-type be right angle or
Fillet.
3. back of the body chamber slot antenna configurations according to claim 1, it is characterised in that：First slot antenna or the second seam
Gap antenna includes the first branch and the second branch be arrangeding in parallel respectively, and first branch is located at the outside table of metal cavitg
Face, second branch are located at the upper surface of metal cavitg.
4. back of the body chamber slot antenna configurations according to claim 3, it is characterised in that：Also include a metal patch, the gold
Belong to paster and connect first branch and the second branch.
5. the back of the body chamber slot antenna configurations according to claim 1 or 4, it is characterised in that：Also include antenna feed point and with
The feed cable of the antenna feed point electrical connection, the inner surface lower section of first chamber portion is provided with an aperture, described
Direction extension of the feed cable along the second chamber portion, by the aperture and passes through first chamber portion.
6. back of the body chamber slot antenna configurations according to claim 1, it is characterised in that：Also include antenna feed point and with it is described
The feed cable of antenna feed point electrical connection, the feed cable is arranged on the inner surface of second chamber portion, described
Antenna feed point is located at the second chamber portion upper surface.
7. back of the body chamber slot antenna configurations according to claim 6, it is characterised in that：Also include matching network, the matching
Network is located between the feed cable and antenna feed point.
8. back of the body chamber slot antenna configurations according to claim 7, it is characterised in that：The matching network includes two series connection
Capacitor and an inductance, described inductance one end is connected between two capacitors, other end ground connection.
9. back of the body chamber slot antenna configurations according to claim 1, it is characterised in that：Also include PC-ABS material layers, it is described
PC-ABS material layers cover upper surface and the outer surface of the metal cavitg.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510661928.9A CN105140651B (en) | 2015-10-14 | 2015-10-14 | Carry on the back chamber slot antenna configurations |
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|---|---|---|---|
| CN201510661928.9A CN105140651B (en) | 2015-10-14 | 2015-10-14 | Carry on the back chamber slot antenna configurations |
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| CN105140651A CN105140651A (en) | 2015-12-09 |
| CN105140651B true CN105140651B (en) | 2018-02-09 |
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| CN201510661928.9A Active CN105140651B (en) | 2015-10-14 | 2015-10-14 | Carry on the back chamber slot antenna configurations |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244626B (en) * | 2015-11-02 | 2018-06-26 | 深圳市信维通信股份有限公司 | Carry on the back chamber slot antenna configurations |
| CN106773624A (en) * | 2016-12-20 | 2017-05-31 | 深圳市信维通信股份有限公司 | A kind of antenna structure and all-metal wrist-watch |
| US11552391B2 (en) | 2017-01-13 | 2023-01-10 | Futurewei Technologies, Inc. | Mobile device with multiple-antenna system |
| CN107834179B (en) * | 2017-11-27 | 2023-08-11 | 深圳市信维通信股份有限公司 | WIFI antenna of all-metal back cover |
| CN112805878B (en) * | 2018-10-10 | 2022-05-24 | 华为技术有限公司 | Antenna, wireless device and antenna array |
| CN114171893B (en) * | 2021-11-01 | 2023-10-20 | 荣耀终端有限公司 | Antenna and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345341A (en) * | 2007-07-13 | 2009-01-14 | 清华大学 | Multiband antenna |
| CN205039259U (en) * | 2015-10-14 | 2016-02-17 | 深圳市信维通信股份有限公司 | Back of body chamber slot antenna structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010187107A (en) * | 2009-02-10 | 2010-08-26 | Konica Minolta Holdings Inc | Electronic device |
| US8773310B2 (en) * | 2010-03-30 | 2014-07-08 | Apple Inc. | Methods for forming cavity antennas |
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2015
- 2015-10-14 CN CN201510661928.9A patent/CN105140651B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345341A (en) * | 2007-07-13 | 2009-01-14 | 清华大学 | Multiband antenna |
| CN205039259U (en) * | 2015-10-14 | 2016-02-17 | 深圳市信维通信股份有限公司 | Back of body chamber slot antenna structure |
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| CN105140651A (en) | 2015-12-09 |
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