CN104471790B - Antenna, antenna system and communicator - Google Patents
Antenna, antenna system and communicator Download PDFInfo
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- CN104471790B CN104471790B CN201480001247.3A CN201480001247A CN104471790B CN 104471790 B CN104471790 B CN 104471790B CN 201480001247 A CN201480001247 A CN 201480001247A CN 104471790 B CN104471790 B CN 104471790B
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Abstract
The embodiment of the present invention provides a kind of antenna, antenna system and communicator, and the antenna includes radiating principal and the interdigital structure connected with the radiating principal, wherein, the radiating principal uses loop aerial form；The radiating principal is provided with earth terminal；The interdigital structure is provided with feed node, and the feed node keeps setpoint distance with the earth terminal；The antenna system and communicator include the antenna；Antenna provided in an embodiment of the present invention has composite left-and-right-hand characteristic and loop aerial characteristic so that the bandwidth increase of antenna covering, improves service behaviour.
Description
Technical field
The present embodiments relate to communication technical field, more particularly to a kind of antenna, antenna system and communicator.
Background technology
With the fast development of LTE (Long Term Evolution, Long Term Evolution) technology, to multimode and
The demand of the end product of MIMO (Multi-input Multi-output, multiple-input and multiple-output) function is more and more, for example,
It is required that the overlayable bandwidth of the antenna of end product is more and more wider.But end product is constantly towards miniaturization, ultrathin hair at present
Exhibition, huge challenge is brought to Antenna Design；For example, terminal miniaturization causes the space of placement antenna in terminal to diminish, then day
The indexs such as tape is wide, radiation efficiency are difficult to；Further, terminal package size diminishes, and causes multiple days in antenna system
The distance between line diminishes, isolation, ECC (Envelope Correlation Coefficient, envelope phase between antenna
Close property coefficient), the index such as SAR (Specific Absorption Rate, special contribution ratios) is difficult to；Moreover, with
Requirement of the user to communication service improves constantly, and the performance requirement of the antenna in terminal is also improved constantly, therefore, how at end
In the case that miniaturization, ultrathin are realized in end, keep antenna performance to meet indices and further lift antenna performance, be one
Individual urgent problem to be solved.
The content of the invention
The embodiment of the present invention provides a kind of antenna, antenna system and communicator, and the antenna has composite left-and-right-hand characteristic,
The service behaviour of antenna is set to get a promotion.
In a first aspect, the embodiment of the present invention provides a kind of antenna, the antenna includes radiating principal and led with the radiation
The interdigital structure of body series connection, wherein, the radiating principal uses loop aerial form；The radiating principal is provided with earth terminal；Institute
State interdigital structure and be provided with feed node, the feed node keeps setpoint distance with the earth terminal.
With reference in a first aspect, in the first embodiment, the interdigital structure includes the first coupling unit and the second coupling
Part；The feed node is arranged at one end of second coupling unit, and the earth terminal connects with first coupling unit
Connect.
With reference to first aspect first embodiment, in this second embodiment, the earth terminal is an earth point or two
Individual earth point,
The first end of second coupling unit is provided with the feed node, and the first end of second coupling unit
It is more than the second end of second coupling unit and the distance of the earth terminal with the distance of the earth terminal.
With reference to first aspect to any of first aspect second embodiment embodiment, in the 3rd embodiment
In, on the radiating principal, there is provided at least one minor matters, at least one minor matters are substantially in bar shaped and along away from described
The direction extension of radiating principal.
With reference to the embodiment of first aspect second or the 3rd, in the 4th embodiment, the institute of second coupling unit
State the second end and be provided with minor matters, the minor matters are substantially L-shaped.
With reference to first aspect to any of the embodiment of first aspect the 4th embodiment, in the 5th embodiment
In, close to the earth terminal formed with U-shaped projection on the radiating principal.
Second aspect, the embodiment of the present invention provide a kind of antenna system, including at least two antennas；Described at least two days
Any one antenna in line is day of the first aspect into the embodiment of first aspect the 5th described in any embodiment
Line.
The third aspect, the embodiment of the present invention provide a kind of communicator, such as first aspect are provided with the communicator
Antenna into the embodiment of first aspect the 5th described in any one embodiment.
With reference to the third aspect, in the first embodiment, the communicator also include antenna holder, circuit board and in
Shell；
The antenna is fixed on the antenna holder；Or the antenna is printed on the circuit board；It is or described
An antenna part is fixed on the antenna holder, and another part of the antenna is printed on the circuit board；Or
The antenna part is printed on the circuit board, and another part of the antenna is fixed on the middle coverboard
On.
With reference to the third aspect or third aspect first embodiment, in this second embodiment, in the communicator,
Metal device is provided with the projected area of the antenna；
The metal device includes at least one in following devices：
Earphone base, telescopic antenna, battery tray.
In antenna provided in an embodiment of the present invention, antenna system and communicator, because antenna includes interdigital structure, radiation
The earth terminal of main body so that antenna has composite left-and-right-hand characteristic and loop aerial characteristic so that the bandwidth increase of antenna covering,
Improve radiation efficiency and reduce the volume of antenna, improve the performance of antenna.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the first structure chart of the antenna of the embodiment of the present invention one；
Fig. 2 is the schematic diagram of the equivalent circuit of the embodiment of the present invention one；
Fig. 3 is the return loss schematic diagram of the antenna of the embodiment of the present invention one；
Fig. 4 is the antenna radiation efficiency schematic diagram of the embodiment of the present invention one；
Fig. 5 is second of structure chart of the antenna of the embodiment of the present invention one；
Fig. 6 is the structure chart of the antenna of the embodiment of the present invention two；
Fig. 7 is the schematic diagram of three-antenna system of the embodiment of the present invention；
Fig. 8 is the schematic diagram of isolation between antennas in the embodiment of the present invention three；
Fig. 9 is the top view for the antenna that the embodiment of the present invention four is arranged on antenna holder；
Figure 10 is the side view for the antenna that the embodiment of the present invention four is arranged on antenna holder；
Figure 11 is the top view that the embodiment of the present invention four sets antenna on circuit boards；
Figure 12 is the top view that the embodiment of the present invention four is separately positioned on antenna holder and the antenna on circuit board；
Figure 13 is the top view that the embodiment of the present invention four sets Part II on circuit boards；
Figure 14 is the top view for the Part I that the embodiment of the present invention four is arranged on middle shell；
Figure 15 is the antenna schematic diagram that the embodiment of the present invention five is arranged in communicator.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is the first structure chart of the antenna of the embodiment of the present invention one.With reference to figure 1, aerial radiation main body in the present embodiment
10 and the interdigital structure 20 connected with the radiating principal 10；Wherein radiating principal 10 uses loop aerial form；Above-mentioned radiation master
Body 10 is provided with earth terminal 11；And interdigital structure 20 is provided with feed node 21, and the feed node keeps setting with earth terminal 11
Distance；In the present embodiment, the course of work of antenna is specially：By above-mentioned feed node input current, then electric current passes through interdigital knot
Structure is flowed into radiating principal, excitation radiation main body radiation signal；Fig. 2 is the schematic diagram of the equivalent circuit of the embodiment of the present invention one.Ginseng
Fig. 2 is examined, in this implementation, when flowing into radiating principal by interdigital structure by the electric current that feed node F is inputted, because electric current flows through
Interdigital structure and the interdigital structure keep setpoint distance with the earth terminal on radiating principal so that electric current is equivalent to flowing through Fig. 2 institutes
The equivalent circuit shown, specifically, interdigital structure is equivalent to electric capacity C, earth terminal is equivalent to inductance L, radiating principal in above-mentioned antenna
Connected with interdigital structure, the electric capacity in the Fig. 2 that connected equivalent to radiating principal, and the earth terminal of radiating principal is equivalent to radiation
Main body inductance L in parallel so that the antenna of the present embodiment has composite left-and-right-hand characteristic, then with antenna phase of the prior art
Than the bandwidth increase of the antenna covering of the present embodiment；Specifically, the return loss that Fig. 3 is the antenna of the embodiment of the present invention one is illustrated
Figure；Fig. 4 is the antenna radiation efficiency schematic diagram of the embodiment of the present invention one.Fig. 3 abscissas are frequency, initial frequency 600MHz, are terminated
Frequency 3000MHz, ordinate are return loss.From figure 3, it can be seen that the antenna of the present embodiment, in 806MHz~2690MHz frequencies
Return loss in the range of rate is less than -6dB, and return loss is less than -5dB and (received frequently in 791MHz~806MHz frequency ranges
Section).Fig. 4 abscissas are frequency, and ordinate is antenna efficiency, and each band antenna efficiency is higher than terminal day as can be seen from Figure 4
The specification requirement of line.
Because antenna has composite left-and-right-hand characteristic in the present embodiment, the area of traditional antenna occupancy is relieved to antenna frequency
The limitation of rate, therefore compared with antenna of the prior art, volume reduces antenna in the present embodiment；Radiated in other the present embodiment
Main body uses loop aerial form so that the antenna of the present embodiment has the characteristic of loop aerial, then the antenna applications are various
When in terminal, because electric current is strapped in around antenna, then influence of the circuit board to antenna of terminal is reduced.
Optionally, Fig. 5 is second of structure chart of the antenna of the embodiment of the present invention one.With reference to figure 5, specifically, interdigital structure
20 include the first coupling unit 22 and the second coupling unit 23；Feed node 21 is arranged at the one of second coupling unit 23
End, the earth terminal 11 are connected with first coupling unit 22；It should be understood that in actual applications, it can adjust interdigital knot
Lateral clearance between first coupling unit and the second coupling unit and/or axial clearance in structure, with the radiation to above-mentioned antenna
Characteristic is adjusted, and the service behaviour of antenna is in preferable states.
Further, above-mentioned earth terminal can be an earth point or two earth points, then the first of the second coupling unit
End 231 is provided with feed node 21, and the first end 231 of the second coupling unit 23 couples with the distance of earth terminal 11 more than second
Second end 232 of part 23 and the distance of earth terminal 11；Such as the earth terminal shown in Fig. 5 is two earth points, then above-mentioned ground connection
First coupling unit of earth point T11 connections 22 in end 11；The first end 231 of second coupling unit 23 is provided with institute
Feed node 21 is stated, and the first end 231 of second coupling unit 23 and earth point T11 distance are more than second coupling
Close the second end 232 and earth point T11 of part 23 distance；And another earth point T12 connections radiation master of earth terminal 11
Body 10.
Antenna in the present embodiment passes through interdigital structure, the earth terminal of radiating principal so that antenna has composite left-and-right-hand
Characteristic and loop aerial characteristic so that the bandwidth increase of antenna covering, improve radiation efficiency and reduce the volume of antenna, carry
The performance of antenna is risen.
Optionally, Fig. 6 is the structure chart of the antenna of the embodiment of the present invention two.With reference to figure 6, the present embodiment is in embodiment one
On the basis of make further description, specifically, on radiating principal 10, there is provided at least one minor matters 13, described at least one
Individual minor matters substantially extend in bar shaped and along away from the direction of radiating principal；Flexibly, can also be the second of the second coupling unit 23
End 232 is provided with minor matters 13, and the minor matters are substantially L-shaped.
Explanation is required supplementation with, loop aerial form can be flexible and changeable used by above-mentioned radiating principal 10, for example, close
For the earth terminal 11 of radiating principal 10 formed with U-shaped raised 12, the projection can be closed loop configuration, can also be in raised end opening
State, the opening of the protruding end are provided with two ground termination points.
In the present embodiment, by setting at least one minor matters on radiating principal, then the electric current inputted by feed node swashs
During encouraging radiating principal, electric current still flows to each minor matters, and compared with embodiment one, current path changes in the present embodiment
Become, so as to optimize the service behaviour of antenna；For example, the harmonic shock point for being not provided with the antenna of minor matters is located at 2.8GHz, and this
When the harmonic shock point that is actually needed should be located at 2.6GHz, then increase the quantity of minor matters or the length of detail, if also needing further to reduce
Harmonic shock point, then continue to increase the length of the second minor matters, or the quantity of the second minor matters of increase.
Further, the embodiment of the present invention also provides a kind of antenna system, including at least two antennas；
Any one antenna in above-mentioned at least two antenna is any to antenna embodiment two for aforementioned antenna embodiment one
Antenna described in individual embodiment；Specifically, Fig. 7 is the schematic diagram of three-antenna system of the embodiment of the present invention.As shown in fig. 7, antenna
System S1 includes two antenna S2, and two antenna S2 are that to antenna embodiment two, any one is implemented aforementioned antenna embodiment one
Antenna described in example.In actual applications, above-mentioned antenna system is specially and needs to set the MIMO (Multiple- of multiple antennas
Input Multiple-Output, multiple-input and multiple-output) system or diversity system etc..
Specifically, Fig. 8 is the schematic diagram of isolation between antennas in the embodiment of the present invention three.Fig. 8 abscissas are frequency, starting frequency
Rate 600MHz, terminate frequency 3000MHz；Ordinate is isolation between antennas, in 791MHz~2690MHz band limits, antenna
Isolation is less than -10.5dB.Low-frequency range (791MHz~960MHz) isolation between antennas solves better than traditional antenna 3dB or so
The problem of traditional antenna low-frequency range isolation difference.With reference to figure 7 and Fig. 8, in the present embodiment, due to the antenna in antenna system simultaneously
Characteristic with composite left-and-right-hand transmission characteristic and loop aerial, makes electric current mainly be strapped in around antenna, then by the aerial system
Unite when being used for MIMO or diversity system, the isolation between major and minor antenna can be effectively improved, reduce ECC (Envelope
Correlation Coefficient, envelope correlation coefficient).
Further, the present invention a kind of communicator is also provided, in the communicator be provided with as previous embodiment one to
Any antenna in embodiment two, when communicator is mobile phone, because antenna has Meta Materials characteristic and the characteristic of loop antenna,
Electric current is mainly strapped in around antenna, the influence of the head and hand of user to antenna performance can be reduced.
Optionally, in communicator, in addition to antenna holder and circuit board, and antenna is fixed on antenna holder；Or
Person's antenna is printed on circuit boards；Or an antenna part is fixed on antenna holder, another part of antenna is printed on described
On circuit board；Or the antenna part is printed on the circuit board, another part of the antenna be fixed on it is described in
On coverboard.
Specifically, Fig. 9 is the top view for the antenna that the embodiment of the present invention four is arranged on antenna holder；Figure 10 is the present invention
Example IV is arranged on the side view of the antenna on antenna holder.With reference to figure 9 and Figure 10, communicator is by taking mobile phone as an example, mobile phone
Interior antenna holder 30 is hexahedron structure, then adjacent two face (31 and 32) of the antenna along antenna holder, is fixed on antenna
On support 30；
Antenna in mobile phone is at work, it is necessary to current output terminal output drive electric current on circuit board of mobile phone, this reality
Applying an antenna has composite left-and-right-hand characteristic and loop aerial characteristic, can motivate left-handed mode/right-handed mode, basic mode/high order
The multiple-working modes such as mould, the broader beamwidth of antenna can be obtained；Influenceed more by device on circuit board ' ' and circuit board simultaneously
It is small, relatively conventional antenna, good antenna performance can be obtained under smaller antenna headroom area, so as to save antenna occupancy
Space, contribute to the complete machine of communicator to minimize.
Optionally, Figure 11 is the top view that the embodiment of the present invention four sets antenna on circuit boards.With reference to figure 11, circuit
Plate 40 can be PCB (Printed Circuit Board, printed circuit board), then antenna is printed on pcb board, reduce day line wheel
Exterior feature, save antenna holder, FPC (Flexible Printed Circuit, FPC and, the consuming of steel disc and antenna
The space that support takes, designed beneficial to the miniaturization ultrathin of communicator.
Optionally, Figure 12 is the vertical view that the embodiment of the present invention four is separately positioned on antenna holder and the antenna on circuit board
Figure；With reference to figure 12, a part for above-mentioned antenna is Part I D1, and another part of above-mentioned antenna is Part II D2, then
A part is fixed on antenna holder 30, and Part II D2 is printed on circuit board 40, and Part I D1 and Part II D2
Between can electrically connect；Or Figure 13 is the top view that the embodiment of the present invention four sets Part II on circuit boards；Figure 14 is
The embodiment of the present invention four is arranged on the top view of the Part I on middle shell, and with reference to figure 13 and Figure 14, Part II D2 is printed on
On circuit board 40, Part I is fixed on middle shell 50, during the assembling of central shell 50 and circuit board 40, Part I D1 and second
D2 is divided to electrically connect.
With reference to previous embodiment four, in the 5th embodiment, in communicator, metal is provided with the projected area of antenna
Device；The metal device includes at least one in following devices：Earphone base, telescopic antenna, battery tray.
Specifically, Figure 15 is the antenna schematic diagram that the embodiment of the present invention five is arranged in communicator.With reference to figure 9 and figure
15, in the present embodiment so that antenna is fixed on antenna holder 30 as an example, and a line edge of the antenna holder 30 and circuit board 40
It is close to, because antenna has composite left-and-right-hand characteristic and the characteristic of loop aerial, its antenna headroom length is 10.3mm, and headroom is wide
Spend for 32mm, and smaller, such as the installation by earphone base 61 is influenceed on antenna performance in the metal device of antenna projected area installation
Position and the projection area overlapping of antenna, battery tray 62 (being represented by dotted lines) are arranged on the back side of circuit board 40, and are also at antenna
Projected area in；Measured through test data, even if metal device to be placed on to the projected area of antenna, antenna performance influences smaller.
In the present embodiment, because the antenna that communicator is set has composite left-and-right-hand characteristic and the characteristic of loop aerial,
Traditional antenna in compared with prior art, in the case where meeting performance requirement, the clearance zone of the antenna in the present embodiment can subtract
It is small by 30%, space is effectively saved, beneficial to the miniaturization of communicator.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (8)
- A kind of 1. antenna, it is characterised in that the antenna includes radiating principal and the interdigital structure connected with the radiating principal, Wherein, the radiating principal uses loop aerial form；The radiating principal is provided with earth terminal；The interdigital structure is provided with feedback Electrical nodes, the feed node keep setpoint distance with the earth terminal；The interdigital structure includes the first coupling unit and the second coupling unit；The feed node is arranged at second coupling Partial one end, the earth terminal are connected with first coupling unit；The earth terminal is an earth point or two earth points, described two to connect when the earth terminal is two earth points Place is located at the same side of the feed node；The first end of second coupling unit is provided with the feed node, and the first end of second coupling unit and institute The distance for stating earth terminal is more than the second end of second coupling unit and the distance of the earth terminal.
- 2. antenna according to claim 1, it is characterised in that on the radiating principal, there is provided at least one minor matters, At least one minor matters substantially extend in bar shaped and along away from the direction of the radiating principal.
- 3. antenna according to claim 1 or 2, it is characterised in that second end of second coupling unit is provided with Minor matters, the minor matters are substantially L-shaped.
- 4. antenna according to claim 1 or 2, it is characterised in that formed on the radiating principal close to the earth terminal There is U-shaped projection.
- 5. a kind of antenna system, it is characterised in that including at least two antennas；Any one day at least two antenna Line is the antenna described in any one of Claims 1 to 4.
- 6. a kind of communicator, it is characterised in that be provided with the communicator as described in any one of Claims 1 to 4 Antenna.
- 7. communicator according to claim 6, it is characterised in that the communicator also includes antenna holder, circuit Plate and middle shell；The antenna is fixed on the antenna holder；Or the antenna is printed on the circuit board；Or the antenna A part is fixed on the antenna holder, and another part of the antenna is printed on the circuit board；OrThe antenna part is printed on the circuit board, and another part of the antenna is fixed on the middle coverboard.
- 8. the communicator according to claim 6 or 7, it is characterised in that in the communicator, the throwing of the antenna Metal device is provided with shadow zone；The metal device includes at least one in following devices：Earphone base, telescopic antenna, battery tray.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014076163 | 2014-04-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104471790A CN104471790A (en) | 2015-03-25 |
| CN104471790B true CN104471790B (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480001247.3A Active CN104471790B (en) | 2014-04-24 | 2014-04-24 | Antenna, antenna system and communicator |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204885426U (en) * | 2015-07-10 | 2015-12-16 | 西安中兴新软件有限责任公司 | Multiple -input -multiple -output antenna structure and terminal |
| CN108539375A (en) * | 2018-03-30 | 2018-09-14 | 东华大学 | A kind of fabric base super high frequency radio frequency identification antenna and manufacturing method |
| CN109273841B (en) * | 2018-09-17 | 2020-12-04 | 深圳传音通讯有限公司 | Antenna and terminal equipment |
| CN110224216B (en) * | 2019-06-08 | 2020-11-10 | 西安电子科技大学 | MIMO array 5G mobile phone antenna based on CRLH-TL structure |
| CN110661091B (en) * | 2019-10-09 | 2021-01-26 | 成都航空职业技术学院 | Small-size multiband broadband antenna |
| WO2022111064A1 (en) * | 2020-11-30 | 2022-06-02 | Oppo广东移动通信有限公司 | Electronic device |
| CN113097715B (en) * | 2021-06-10 | 2021-08-27 | 电子科技大学中山学院 | Planar composite left-right hand transmission line type 5G mobile phone MIMO antenna |
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| JP2011061638A (en) * | 2009-09-11 | 2011-03-24 | Tdk Corp | Antenna device |
| CN102315513A (en) * | 2010-07-02 | 2012-01-11 | 财团法人工业技术研究院 | Multi-frequency antenna and multi-frequency operation method for antenna |
| CN102396110A (en) * | 2009-04-14 | 2012-03-28 | Ace技术株式会社 | Broadband antenna using coupling matching with short-circuited end of radiator |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102396110A (en) * | 2009-04-14 | 2012-03-28 | Ace技术株式会社 | Broadband antenna using coupling matching with short-circuited end of radiator |
| JP2011061638A (en) * | 2009-09-11 | 2011-03-24 | Tdk Corp | Antenna device |
| CN102315513A (en) * | 2010-07-02 | 2012-01-11 | 财团法人工业技术研究院 | Multi-frequency antenna and multi-frequency operation method for antenna |
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