CN102810734A - Antenna and multiple-input and multiple-output (MIMO) antenna with same - Google Patents
Antenna and multiple-input and multiple-output (MIMO) antenna with same Download PDFInfo
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- CN102810734A CN102810734A CN2011101451457A CN201110145145A CN102810734A CN 102810734 A CN102810734 A CN 102810734A CN 2011101451457 A CN2011101451457 A CN 2011101451457A CN 201110145145 A CN201110145145 A CN 201110145145A CN 102810734 A CN102810734 A CN 102810734A
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Abstract
The invention relates to an antenna, which comprises a dielectric substrate and a metal sheet attached to a surface of the dielectric substrate. The metal sheet is surrounded by a feeder line, and the feeder line is fed in the metal sheet in a coupled manner; a first microgroove structure and a second microgroove structure which are asymmetric are arranged on the metal sheet, so that a metal cable is formed on the metal sheet; and the antenna is provided with space in advance, and electronic elements can be embedded in the space. The space embedded with the electronic elements is formed in the antenna, the properties of the antenna are finely adjusted by changing the properties of the embedded electronic elements, and the antenna which meets requirements on adaptability and generality. In addition, the invention also relates to a multiple-input and multiple-output (MIMO) antenna with a plurality of the antennas.
Description
Technical field
The invention belongs to the communications field, particularly, relate to a kind of antenna and have the MIMO antenna of this antenna.
Background technology
The antenna usage space is little, operating frequency is low when running in traditional antenna design, when being operated in problem such as multimode, the performance of antenna will be limited by the antenna volume size greatly.The electrical length that reduces corresponding antenna of antenna volume also will be affected, and antenna radiation efficiency and operating frequency will change.Traditional dipole antenna and PIFA antenna just seem unable to do what one wishes in the face of problems such as existing communicating terminal small size, broadbands the time, design difficulty greatly finally can not satisfy the requirement of use.Traditional antenna is only used the radiation requirement that realizes multimode through the terminated line of outside in the low-frequency range design; In antenna-feedback system, be the job requirement that can realize low frequency, multimode on the function behind the adding matching network, very large part energy is lost on the matching network but its radiation efficiency will reduce greatly.Existing ultra material miniature antenna; Like publication number is the Chinese patent of CN201490337; Integrated novel artificial electromagnetic material in design, so its radiation has profuse dispersion characteristics, can form multiple radiation mode; Can remove loaded down with trivial details impedance matching network from, the impedance matching that this abundant dispersion characteristics are multifrequency point brings great convenience.However existing ultra material miniature antenna has also received great restriction in the process of design in the face of problems such as existing terminal equipment small size, low operating frequency, broadband multimodes the time.
Simultaneously, there are bigger otherness in environment that antenna is worked in Different products and electromagnetic property, will cause antenna performance in design and use, to have bigger difference, so the antenna that requires to design must have stronger adaptability and versatility.In sum, original technique in use will run into the problem of versatility and the poor performance opposite sex.
Summary of the invention
The technical problem that the present invention will solve is; To antenna operational environment and the bigger otherness of electromagnetic property existence in different product; Cause antenna performance in design and use, to have bigger difference, a kind of antenna is provided, this antenna has stronger adaptability and versatility.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of antenna; Said antenna comprises medium substrate, attached to the sheet metal on medium substrate one surface; Be provided with feeder line around sheet metal; Said feeder line is through the said sheet metal of coupled modes feed-in, and hollow out has asymmetrical first micro groove structure and second micro groove structure on sheet metal, to form metal routing on the said sheet metal, and said antenna is preset with the space that electronic component embeds.
Further, said space be arranged between feeder line, second feeder line, feeder line and the sheet metal, between second feeder line and the sheet metal and these three positions of sheet metal at least one on.
Further, said space is arranged on the metal routing on the sheet metal, and perhaps said space is arranged on first micro groove structure and/or second micro groove structure.
Further, said electronic component is perceptual electronic component, capacitive electronic component or resistance.
Further, said space is the pad that is formed on the said antenna.
Further, the scope of said perceptual electronic component inductance value is between 0-5uH.
Further, the scope of said capacitive electronic component capacitance is between 0-2pF.
Further, said first micro groove structure be a kind of in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and the complementary folding line structure or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
Further, said second micro groove structure be a kind of in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and the complementary folding line structure or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
The antenna of embodiment of the present invention; With respect to existing antenna; Has following beneficial effect: through the space that electronic component embeds is set on antenna; Can finely tune the performance of antenna through the performance that changes the electronic component that embeds, design the antenna of the requirement of satisfying adaptability and versatility.In addition, hollow out has asymmetrical first micro groove structure and second micro groove structure on sheet metal, therefore can produce a plurality of resonance points at an easy rate, and the difficult counteracting of resonance point, is easy to realize multimode resonance, realizes the multimodeization of antenna easily.
Another problem to be solved by this invention provides a kind of MIMO antenna.
The present invention solves the problems of the technologies described above the scheme that is adopted: a kind of MIMO antenna, said MIMO antenna comprises a plurality of above-mentioned antennas.
According to MIMO antenna of the present invention, except the characteristics that possess above-mentioned antenna itself, also have very high isolation, the antijamming capability between a plurality of antennas is strong.
Description of drawings
Fig. 1 is the stereogram of antenna first embodiment of the present invention;
Fig. 2 is another visual angle figure of Fig. 1;
The structural representation of Fig. 3 antenna second embodiment of the present invention;
The structural representation of Fig. 4 antenna the 3rd embodiment of the present invention;
Fig. 5 a is the sketch map of complementary split ring resonator structure;
Fig. 5 b is depicted as the sketch map of complementary helix structure;
Fig. 5 c is depicted as the sketch map of opening helical ring structure;
Fig. 5 d is depicted as the sketch map of two opening helical ring structures;
Fig. 5 e is depicted as the sketch map of complementary folding line structure;
Fig. 6 a is the sketch map of deriving of complementary its geometry of split ring resonator structure shown in Fig. 5 a;
Fig. 6 b is the sketch map of deriving of complementary its expansion of split ring resonator structure shown in Fig. 5 a;
Fig. 7 a is the structural representation behind the complementary split ring resonator structure shown in three Fig. 5 a compound;
Fig. 7 b is the compound sketch map that the complementary split ring resonator structure shown in two Fig. 5 a and Fig. 5 b are depicted as complementary helix structure;
Fig. 8 is the structural representation after the complementary split ring resonator structural group battle array shown in four Fig. 5 a.
Embodiment
Like Fig. 1 and shown in Figure 2; Said antenna of the present invention comprises medium substrate 1, attached to the sheet metal 4 on medium substrate 1 one surface; Be provided with feeder line 2 around sheet metal 4; Said feeder line 2 is through the said sheet metal 4 of coupled modes feed-in, and hollow out has asymmetrical first micro groove structure 41 and second micro groove structure 42 on sheet metal, to form metal routing 43 on the said sheet metal 4, and said antenna 100 is preset with the space 6 that electronic component embeds.
Among Fig. 1 to Fig. 4, the part of sheet metal cross-hatching is a metal routing, the blank parts on the sheet metal (part of hollow out) expression first micro groove structure and second micro groove structure.In addition, feeder line is also represented with hatching.
Shown in Figure 1 is the stereogram of antenna of the present invention, and Fig. 2 is its another visual angle figure.Comprehensive two figure can find out that a surface attachment of medium substrate has feeder line and sheet metal, does not adhere to other structure on the b surface.Certainly, according to different needs, also can there be other structure on the b surface.
Said first micro groove structure 41 among the present invention, second micro groove structure 42 can be the complementary helix structures shown in the complementary split ring resonator structure shown in Fig. 5 a, Fig. 5 b, a kind of in the two opening helical ring structures shown in the opening helical ring structure shown in Fig. 5 c, Fig. 5 d, the complementary folding line structure shown in Fig. 5 e or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.Derive and be divided into two kinds; A kind of is that geometry is derived; Another kind is that expansion is derived, and the geometry is here derived and is meant that function class derives like, variform structure, is for example derived to class of a curve structure, triangle class formation and other different polygon class formation by the square frame class formation; The expansion is here derived and promptly on the basis of Fig. 5 a to Fig. 5 e, is offered new groove to form new micro groove structure; Complementary split ring resonator structure with shown in Fig. 5 a is an example, and Fig. 6 a is its geometry sketch map of deriving, and Fig. 6 b is its geometry sketch map of deriving.Compound being meant here, a plurality of stacks of the micro groove structure of Fig. 5 a to Fig. 5 e form a new micro groove structure, shown in Fig. 7 a, are the structural representation of the complementary split ring resonator structure shown in three Fig. 5 a after compound; Shown in Fig. 7 b, be that the complementary split ring resonator structure shown in two Fig. 5 a and Fig. 5 b are depicted as the common structural representation after compound of complementary helix structure.The group battle array here is meant the micro groove structure that is formed an integral body by the micro groove structure array on same sheet metal shown in a plurality of Fig. 5 a to Fig. 5 e, and is as shown in Figure 8, is the structural representation after a plurality of complementary split ring resonator structural group battle arrays shown in Fig. 5 a.
Among the present invention, said space 6 is arranged between feeder line 2, feeder line 2 and the sheet metal 4 and reaches at least one of sheet metal 4 these three positions.Preferably, a plurality of spaces 6 being provided with on antenna is as shown in Figure 1, that is, on a of medium substrate face, between feeder line 2, feeder line 2 and the sheet metal 4, and sheet metal 4 these three positions on the space 6 that electronic component embeds all is set.Wherein, Space on the sheet metal 4 comprises the space that is arranged on the metal routing 43; And be arranged on the space 6 on first micro groove structure 41 and second micro groove structure 42, and be arranged on metal routing 43 edges that space 6 on first micro groove structure 41 and second micro groove structure 42 connects both sides respectively.
The reserved location in space is not limited to above-mentioned several kinds of forms on the antenna 100 of the present invention, as long as the space is arranged on the antenna.For example, the space can also be arranged on the medium substrate.
Said electronic component of the present invention is perceptual electronic component, capacitive electronic component or resistance.After in the headspace of antenna, adding this type of electronic component, can improve the various performances of antenna.And, can realize the adjustable of antenna performance parameters through adding the electronic component of different parameters.Add electronic component in the space following several kinds of situations can be arranged:
(1) in the space of feeder line, adds perceptual electronic component; Using formula:
can know square being inversely proportional to of size and operating frequency of inductance value; So, can realize through suitable embedding inductance or perceptual electronic component when the operating frequency that needs is when hanging down operating frequency.The inductance value range of the perceptual electronic component that adds is preferably between the 0-5uH, because, thereby if the too big alternating signal of inductance value will be had influence on the radiation efficiency of antenna by perceptual electronic component consumption.Certainly also possibly add resistance to improve the radiation resistance of antenna in the space on feeder line.Certainly, also a plurality of spaces can be set on the feeder line, segment space embedded resistor wherein, segment space embeds perceptual electronic component, has both realized the adjusting of operating frequency, can improve the radiation resistance of antenna again.Certainly according to other needs, also can only in segment space, add electronic component, the lead short circuit is used in other space.
(2) embed the capacitive electronic component in the space between feeder line 2 and sheet metal 4.Here regulate the signal coupling between feeder line 2 and the sheet metal 4 through embedding the capacitive electronic component; Using formula: f=1/
can know square being inversely proportional to of size and operating frequency of capacitance; So when the operating frequency that needs is when hanging down operating frequency, can realize through suitable embedding capacitive electronic component.The capacitance scope of the capacitive electronic component that adds is usually between 0-2pF, but the capacitance that embeds along with the variation of operating frequency of antenna also possibly exceed the scope of 0-2pF.Certainly, also can between feeder line 2 and sheet metal 4, preset a plurality of spaces, in not being connected with the space of electronic component, adopt the lead short circuit.
(3) the perceptual electronic component of embedding and/or resistance are arranged in the space 6 on the metal routing 43 of sheet metal.The purpose that embeds perceptual electronic component here is the inductance value that increases sheet metal internal resonance structure, thus the effect that the resonance frequency and the bandwidth of operation of antenna played adjusting; The purpose of embedded resistor is to improve the radiation resistance of antenna here.So, then decide as required to embedding perceptual electronic component or resistance.In not embedding the space of electronic component, adopt the lead short circuit in addition.
(4) embed the capacitive electronic component in the space of on first micro groove structure 41 and second micro groove structure 42, reserving 6.Embedding capacitive electronic component can change the resonance performance of sheet metal, the Q value and the resonance working point of finally improving antenna.As common practise, we know that the relation of passband BW and resonance frequency w0 and quality factor q is: BW=wo/Q, and this formula shows that Q more greatly then passband is narrow more, the more little then passband of Q is wide more.Other has: Q=wL/R=1/wRC, and wherein, Q is a quality factor; Supply frequency when w is circuit resonance; L is an inductance; R is the resistance of string; C is an electric capacity, can be known by the Q=wL/R=1/wRC formula, and Q and C are inverse ratio, therefore, can reduce the Q value through adding the capacitive electronic component, and passband is broadened.
Antenna of the present invention can be the same structure before not adding any element; Just through adding different electronic components at diverse location; And the difference of the parameter of electronic component (inductance value, resistance value, capacitance); Realize the performance parameter of different antennae, promptly realized versatility, therefore can significantly reduce production costs.
Said space of the present invention can be a pad, also can be a vacancy.Pad configuration can be referring to the pad on the common circuit board.Certainly, the needs that the design consideration of its size is different can be different.
In addition, among the present invention, medium substrate can be processed by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.Preferably, being processed by macromolecular material, can be macromolecular materials such as FR-4, F4B particularly.
Among the present invention, sheet metal is copper sheet or silver strip.Be preferably copper sheet, cheap, conduct electricity very well.
Among the present invention, feeder line is selected for use with the same material of sheet metal and is processed.Be preferably copper.
Said among the present invention " asymmetrical first micro groove structure 41 and second micro groove structure 42 " is meant, both do not constitute axially symmetric structure first micro groove structure 41 and second micro groove structure 42.In other words, promptly can not find a symmetry axis, win micro groove structure 41 and second micro groove structure, 42 relative these symmetry axis are symmetrical set on a surface.
Among the present invention; Therefore first micro groove structure 41 and second micro groove structure, 42 structures are asymmetric, and two locational electric capacity can be different with inductance, thus at least two different resonance points of generation; And the difficult counteracting of resonance point, help the multimodeization that realizes that antenna is abundant.
The version of first micro groove structure 41 of the present invention and second micro groove structure 42 can be the same, also can be different.And the degree of asymmetry of first micro groove structure 41 and second micro groove structure 42 can be regulated as required.Thereby realize abundant adjustable multimode resonance.
And the present invention as required, on a slice sheet metal, more micro groove structure can also be set, so that described antenna has the different resonant more than three.
Concrete, the asymmetric situation among the present invention can have following embodiment.
Shown in Figure 1 is the structural representation of first embodiment of the invention.Fig. 2 is its another visual angle figure.In the present embodiment; As shown in Figure 1; Be in medium substrate a surface first micro groove structure 41 and second micro groove structure 42 its be opening helical ring structure; First micro groove structure 41 and second micro groove structure 42 do not communicate, but the difference of its size causes the asymmetric of the two structure, make antenna have plural at least resonance frequency.
Shown in Figure 3 is the structural representation of second embodiment of the invention.In the present embodiment; Be in medium substrate a surface first micro groove structure 41 and second micro groove structure 42 its be opening helical ring structure; And has identical size; First micro groove structure 41 and second micro groove structure 42 do not communicate, but because first micro groove structure 41 and 42 the two the locational setting of second micro groove structure cause the asymmetric of the two structure.
Shown in Figure 4 is the structural representation of third embodiment of the invention.In the present embodiment; First micro groove structure 41 that is in medium substrate a surface is complementary helix structure, and second micro groove structure 42 is an opening helical ring structure, and first micro groove structure 41 and second micro groove structure 42 do not communicate; Clearly, first micro groove structure 41 and second micro groove structure 42 are asymmetric.
In addition, in above-mentioned three embodiment, first micro groove structure and second micro groove structure can also be realized the connection of first micro groove structure and second micro groove structure through new groove of hollow out on sheet metal.Being communicated with back first micro groove structure and second micro groove structure still is unsymmetric structure, therefore, effect of the present invention is not had too much influence, equally can be so that antenna has plural at least resonance frequency.
Among the present invention,,, can adopt various manufactures as long as satisfy design principle of the present invention about the processing and manufacturing of antenna.Prevailing method is to use the manufacturing approach of all kinds of printed circuit board (PCB)s (PCB), certainly, metallized through hole, the PCB of double-sided copper-clad makes also can satisfy processing request of the present invention.Remove this processing mode; Can also introduce other manufacturing process according to the needs of reality; (RFID is the abbreviation of Radio Frequency Identification such as RFID; Be REID, be commonly called as electronic tag) but in the processing mode that makes up of processing mode and iron plate and the PCB of flexible PCB processing, iron plate antenna of employed conductive silver paste printing ink processing mode, all kinds of deformation devices.Wherein, iron plate and PCB combination processing mode is meant that the accurate processing that utilizes PCB accomplishes the processing of antenna micro groove structure, accomplishes other slave part with iron plate.In addition, can also process through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method.
The present invention also provides a kind of MIMO antenna, and described MIMO antenna is made up of a plurality of above-mentioned antennas 100.The MIMO here promptly is meant multiple-input and multiple-output.Be that all single antennas 100 on the MIMO antenna are launched simultaneously, receive simultaneously.The MIMO antenna can increase considerably the information throughput and the transmission range of system under the prerequisite that need not increase bandwidth or total transmitted power loss.MIMO antenna of the present invention in addition also has very high isolation, and the antijamming capability between a plurality of antennas is strong.
MIMO antenna of the present invention, the feeder line of its each antenna 100 is connected with a reception/transmitter, and all reception/transmitters all are connected on the baseband signal processor.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1. antenna; It is characterized in that; Said antenna comprises medium substrate, attached to the sheet metal on medium substrate one surface, be provided with feeder line around sheet metal, said feeder line is through the said sheet metal of coupled modes feed-in; Hollow out has asymmetrical first micro groove structure and second micro groove structure on sheet metal, to form metal routing on the said sheet metal, and said antenna is preset with the space that electronic component embeds.
2. antenna according to claim 1 is characterized in that, said space is arranged between feeder line, feeder line and the sheet metal and reaches at least one of these three positions of sheet metal.
3. antenna according to claim 2 is characterized in that, said space is arranged on the metal routing on the sheet metal, and perhaps said space is arranged on first micro groove structure and/or second micro groove structure.
4. according to claim 2 or 3 described antennas, it is characterized in that said electronic component is perceptual electronic component, capacitive electronic component or resistance.
5. according to claim 2 or 3 described antennas, it is characterized in that said space is the pad that is formed on the said antenna.
6. antenna according to claim 4 is characterized in that the scope of said perceptual electronic component inductance value is between 0-5uH.
7. antenna according to claim 4 is characterized in that, the scope of said capacitive electronic component capacitance is between 0-2pF.
8. antenna as claimed in claim 1; It is characterized in that, said first micro groove structure be a kind of in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and the complementary folding line structure or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
9. antenna as claimed in claim 1; It is characterized in that, said second micro groove structure be a kind of in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure and the complementary folding line structure or through several kinds of structures in front derive, compound or a micro groove structure that the group battle array obtains.
10. a MIMO antenna is characterized in that, said MIMO antenna comprises a plurality of antennas as claimed in claim 1.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101451457A CN102810734A (en) | 2011-05-31 | 2011-05-31 | Antenna and multiple-input and multiple-output (MIMO) antenna with same |
| PCT/CN2011/080437 WO2012122794A1 (en) | 2011-03-14 | 2011-09-30 | Antenna and mimo antenna having the antenna |
| TW100150007A TWI515959B (en) | 2011-03-14 | 2011-12-30 | Antenna and mimo antenna with the antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101451457A CN102810734A (en) | 2011-05-31 | 2011-05-31 | Antenna and multiple-input and multiple-output (MIMO) antenna with same |
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| CN102810734A true CN102810734A (en) | 2012-12-05 |
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| CN2011101451457A Pending CN102810734A (en) | 2011-03-14 | 2011-05-31 | Antenna and multiple-input and multiple-output (MIMO) antenna with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3439105A1 (en) * | 2017-08-04 | 2019-02-06 | Palo Alto Research Center Incorporated | Meta-antenna |
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|---|---|---|---|---|
| WO2008083719A1 (en) * | 2007-01-12 | 2008-07-17 | Aida Centre, S.L. | Self-resonant electrically small antenna |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
| US20100156573A1 (en) * | 2008-08-22 | 2010-06-24 | Duke University | Metamaterials for surfaces and waveguides |
| CN201773945U (en) * | 2010-07-05 | 2011-03-23 | 萨基姆移动电话研发（宁波）有限公司 | Mobile terminal antenna |
-
2011
- 2011-05-31 CN CN2011101451457A patent/CN102810734A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008083719A1 (en) * | 2007-01-12 | 2008-07-17 | Aida Centre, S.L. | Self-resonant electrically small antenna |
| US20100156573A1 (en) * | 2008-08-22 | 2010-06-24 | Duke University | Metamaterials for surfaces and waveguides |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
| CN201773945U (en) * | 2010-07-05 | 2011-03-23 | 萨基姆移动电话研发（宁波）有限公司 | Mobile terminal antenna |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3439105A1 (en) * | 2017-08-04 | 2019-02-06 | Palo Alto Research Center Incorporated | Meta-antenna |
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