CN102800937B - A kind of antenna and there is the mimo antenna of this antenna - Google Patents
A kind of antenna and there is the mimo antenna of this antenna Download PDFInfo
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- CN102800937B CN102800937B CN201110144982.8A CN201110144982A CN102800937B CN 102800937 B CN102800937 B CN 102800937B CN 201110144982 A CN201110144982 A CN 201110144982A CN 102800937 B CN102800937 B CN 102800937B
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Abstract
The present invention discloses a kind of antenna, and it comprises: feeder line, the first sheet metal, the second sheet metal; Feeder line is by coupled modes feed-in first sheet metal, and the second sheet metal is oppositely arranged with the first sheet metal and is electrically connected with feeder line; On first sheet metal, hollow out has micro groove structure to form metal routing on the first sheet metal, antenna is provided with the headspace that one or more electronic component embeds.The present invention makes the swept area of feeder line increase by setting up the second sheet metal at feeder line opposite face, makes antenna volume less, more excellent performance when Antenna Operation is in low frequency; The present invention simultaneously also embeds multiple electronic component as required on antenna, conveniently can regulate the frequency range of the performance of antenna and required response.Meanwhile, the present invention also discloses a kind of mimo antenna with this antenna, and this mimo antenna has high-isolation.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of antenna for radio communication and there is the mimo antenna of this antenna.
Background technology
Along with the high development of semiconductor technology, propose more and more higher requirement to current electronic system integrated level, the miniaturization of device becomes the technical problem that whole industry is paid special attention to.But, be different from the development that IC chip follows " Moore's Law ", as other important composition---the radio-frequency module of electronic system, be but faced with the highly difficult technological challenge of device miniaturization.Radio-frequency module mainly includes the main devices such as mixing, power amplifier, filtering, radio signal transmission, matching network and antenna.Wherein, antenna is as the radiating element of final radiofrequency signal and receiving device, and its operating characteristic will directly affect the service behaviour of whole electronic system.But the important indicator such as the size of antenna, bandwidth, gain, radiation efficiency but receives the restriction (gain margin under fixed dimension, bandwidth limit etc.) of basic physical principle.The general principle of these index limit makes the miniaturization technology difficulty of antenna considerably beyond other device, and the complexity of electromagnetic field analysis due to radio-frequency devices, approaching these limiting values all becomes huge technological challenge.
Meanwhile, complicated along with contemporary electronic systems, the demand of multimodal service becomes more and more important in the systems such as radio communication, wireless access, satellite communication, radio data network.And the demand of multimodal service further increases the complexity of miniature antenna multimodes design.The technological challenge that removing is miniaturized, the multimode impedance matching of antenna also becomes the bottleneck of antenna technology.On the other hand, the high speed development of multi-input multi-output system (MIMO) in radio communication, wireless data service field further require that the miniaturized of antenna size harshly and ensures good isolation, radiance and antijamming capability simultaneously.But traditional terminal communication antenna mainly designs based on the radiation theory of electric monopole or dipole, such as the most frequently used planar inverted-F antenna (PIFA).Directly and the size positive correlation of antenna, the area positive correlation of bandwidth sum antenna, makes the design of antenna usually need the physical length of half-wavelength for the Radiation work frequency of traditional antenna.In the electronic system that some are more complicated, antenna needs multimode operation, just needs the impedance matching network design outside feed antenna forehead.But the feeder line design of electronic system that what impedance matching network was extra add, increase radio system area simultaneously matching network also introduce many energy losses, be difficult to the requirement of system design meeting low-power consumption.Therefore, miniaturized, multimodal new antenna technology becomes an important technology bottleneck of contemporary electronic integrated system.
Fig. 1 is the Meta Materials radio frequency miniature antenna that prior art is designed, and concrete content is the patent application of CN201490337 with reference to publication number.The design of this antenna breaks through the framework of traditional antenna design, not only ensure that miniaturization and the multimode of antenna, also eliminates the somewhat complex design of impedance matching network simultaneously.
But, the problem that when above-mentioned antenna in use will run into versatility and low frequency operation, feeder loss is large.
Summary of the invention
Technical problem to be solved by this invention is, for the above-mentioned deficiency of prior art, proposes a kind ofly can regulate antenna electric magnetic parameter and make antenna still obtain the antenna of superperformance when low frequency and have the mimo antenna of this antenna.
The technical scheme that the present invention solves the employing of its technical problem proposes a kind of antenna, and it comprises feeder line, the first sheet metal, the second sheet metal; Described feeder line is by the first sheet metal described in coupled modes feed-in, and described second sheet metal is oppositely arranged with described first sheet metal and is electrically connected with described feeder line; On described first sheet metal, hollow out has micro groove structure to form metal routing on described first sheet metal, described antenna is provided with the headspace that one or more electronic component embeds.
Further, described micro groove structure comprise complementary opening resonance loop structure, complementary helix structure, opening helical ring structure, two opening helical ring structure, complementary folding line structure and derived by several structure above, micro groove structure that compound, combination or group battle array obtain.
Further, described headspace is arranged on described feeder line and/or described micro groove structure, and/or described headspace to be arranged between described feeder line and the metal routing of adjacent described feeder line and to be connected the metal routing of described feeder line and adjacent described first feeder line, and/or described headspace to be arranged on metal routing that described micro groove structure adjacent slot formed and to connect described adjacent slot.
Further, described electronic component is perceptual electronic component, capacitive electrical element or resistance.
Further, described perceptual electronic component inductance value range is 0 to 5uH.
Further, described capacitive electrical component capacitance value scope is 0 to 2pF.
Further, described micro groove structure is by etching, boring quarter, ion hollow out at quarter in described first sheet metal.
Further, described antenna also comprises the medium be filled between described first sheet metal and described second sheet metal.
Further, described second sheet metal is electrically connected by the plated-through hole be formed on described medium with described first feeder line or described second feeder line.
The present invention also provides a kind of mimo antenna, and it comprises multiple antenna as claimed in claim 1, and each feeder line of described multiple antenna accesses reception/transmitter separately, and whole described reception/transmitters is all connected to baseband signal processor.
The present invention makes the swept area of feeder line increase by setting up the second sheet metal at feeder line opposite face, makes antenna volume less, more excellent performance when Antenna Operation is in low frequency; The present invention simultaneously also embeds multiple electronic component as required on antenna, conveniently can regulate the frequency range of the performance of antenna and required response.Meanwhile, the present invention also discloses a kind of mimo antenna with this antenna, and this mimo antenna has high-isolation.
Accompanying drawing explanation
Fig. 1 is a kind of antenna structure view of the present invention;
Fig. 2 is a kind of antenna first better embodiment of the present invention front view;
Fig. 3 is a kind of antenna second better embodiment of the present invention front view;
Fig. 4 is a kind of antenna the 3rd better embodiment front view of the present invention;
Fig. 5 is a kind of antenna the 4th better embodiment front view of the present invention;
Fig. 6 is a kind of antenna the 5th better embodiment front view of the present invention;
Fig. 7 a is the schematic diagram of complementary opening resonance loop structure;
Fig. 7 b is depicted as the schematic diagram of complementary helix structure;
Fig. 7 c is depicted as the schematic diagram of opening helical ring structure;
Fig. 7 d is depicted as the schematic diagram of two opening helical ring structure;
Fig. 7 e is depicted as the schematic diagram of complementary folding line structure;
Fig. 8 a derives schematic diagram for its geometry of complementary opening resonance loop structure shown in Fig. 7 a;
Fig. 8 b is the derivative schematic diagram of its expansion of the complementary opening resonance loop structure shown in Fig. 7 a;
Structural representation after the compound that Fig. 9 a is the complementary opening resonance loop structure shown in three Fig. 7 a;
Fig. 9 b is depicted as the compound schematic diagram of complementary helix structure for the complementary opening resonance loop structure shown in two Fig. 7 a and Fig. 7 b;
Figure 10 is the structural representation after the complementary opening resonance loop structure group battle array shown in four Fig. 7 a.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention will be further described:
Meta Materials is made up of on base material according to ad hoc fashion periodic arrangement artificial metal's micro-structural with certain pattern form.The pattern form that artificial metal's micro-structural is different and arrangement mode make Meta Materials have different dielectric constants and different magnetic permeabilitys thus make Meta Materials have different electromagnetic responses.Wherein, when this artificial metal's micro-structural is in resonance band, this artificial metal's micro-structural will show the dispersion characteristics of height, and the dispersion characteristics of so-called height refer to the impedance of this artificial metal's micro-structural, hold perception, equivalent dielectric constant and magnetic permeability along with frequency, and violent change can occur.
As shown in Figure 1, inventive antenna comprises on feeder line 1, first sheet metal 2, second sheet metal 3, first sheet metal 2 and has engraved micro groove structure 100.Micro groove structure 100 be a kind of in the complementary folding line structure shown in the two opening helical ring structures shown in the opening helical ring structure shown in the complementary helix structure shown in the complementary opening resonance loop structure shown in Fig. 7 a, Fig. 7 b, Fig. 7 c, Fig. 7 d, Fig. 7 e or derived by several structure above, micro groove structure that compound or group battle array obtain.Derive and be divided into two kinds, one is that geometry derives, another kind is that expansion is derivative, and geometry is herein derivative refers to that function class derives like, variform structure, such as, derive to class of a curve structure, triangle class formation and other different polygon class formation by square frame class formation; Namely expansion herein derives offers new groove to form new micro groove structure on the basis of Fig. 7 a to Fig. 7 e; For the complementary opening resonance loop structure shown in Fig. 7 a, Fig. 8 a derives schematic diagram for its geometry, and Fig. 8 b derives schematic diagram for its geometry.Compound herein refers to, the micro groove structure that micro groove structure multiple superposition formation one of Fig. 7 a to Fig. 7 e is new, as illustrated in fig. 9, is the structural representation after the complementary opening resonance loop structure compound shown in three Fig. 7 a; As shown in figure 9b, for the complementary opening resonance loop structure shown in two Fig. 7 a and Fig. 7 b are depicted as the structural representation after the common compound of complementary helix structure.Group battle array herein refers to and forms an overall micro groove structure by the micro groove structure array on same sheet metal shown in multiple Fig. 7 a to Fig. 7 e, as shown in Figure 10, is the structural representation after multiple complementary opening resonance loop structure group battle array as shown in Figure 7a.All set forth the present invention for the opening helical ring structure shown in Fig. 7 c below.Micro groove structure 100 makes the first sheet metal 2 forms many strip metals cabling equally.
Feeder line 1 part to be arranged and to micro groove structure 100 couple feed around micro groove structure 100, the mode of feeder line 1 pair of micro groove structure 100 couple feed can be by connecting the inductive coupled feeding classification of feeder line 1 and micro groove structure 100 by short circuit point mode, also can be that feeder line 1 does not connect with micro groove structure 100 but the relative capacitive coupling feeding classification forming coupling capacitance.
The techniques such as the mode that the first sheet metal 2 forms micro groove structure 100 can be etching, bores quarters, photoetching, electronics quarter, ion quarter, wherein be etched to selection process, its key step is after designing suitable micro groove structure, then by etching machines, the foil parts utilizing the chemical reaction of solvent and metal to get rid of default micro groove structure can obtain the first sheet metal 2 being formed with above-mentioned micro groove structure 100.The material of above-mentioned tinsel can be the metal such as copper, silver.
First sheet metal 2 and the second sheet metal 3 are oppositely arranged and there is medium between the two, and medium can be high molecular polymer, ceramic material etc., also can be air.When medium is air, feeder line 1 is electrically connected by wire with the second sheet metal 3, when medium be high molecular polymer or ceramic material time, feeder line 1 and the second sheet metal 3 by forming plated-through hole and being electrically connected to each other on medium.In the present invention, medium adopts polytetrafluoroethylene (FR-4) and is electrically connected the second sheet metal 3 and feeder line 1 by plated-through hole 4.
The setting of the second sheet metal 3 effectively can solve existing patent antenna when being operated in low frequency, the wavelength that the electromagnetic wave of low-frequency range is corresponding is longer, according to antenna design principles, the electric radiation length of feeder will increase and makes feed line length elongated, be unfavorable for the miniaturization of entire physical and longer feeder line makes feeder loss increase thus the problem that antenna performance is declined.The principle of its Resolving probiems is: the second sheet metal 3 and the first sheet metal 2 capacitive coupling, to micro groove structure 100 couple feed that the first sheet metal 2 is formed.Second sheet metal 3 effectively decreases the demand of feeder line 1 to micro groove structure 100 couple feed that the first sheet metal 2 is formed to micro groove structure 100 couple feed that the first sheet metal 2 is formed.Therefore when Antenna Operation is in low-frequency range without the need to increasing feeder line 1 length, and the area of the second sheet metal 3 couple feed be easy to regulate, only need simply to adjust the second sheet metal 3 couple feed area for different working frequency range.
The all predeterminable headspace having electronic component to embed on feeder line 1, micro groove structure 100, many strip metals cabling.Above-mentioned electronic component is generally perceptual electronic component, capacitive electrical element or resistance, can certainly be its combination.In the present invention, headspace adopts the form of pad, by wire, headspace is electrically connected in the unemployed situation of headspace, when headspace is utilized, because execution mode is varied, different execution modes is by change effects different for correspondence, but entirety is all the electromagnetic parameters changing entire physical by embedding different electronic component makes it to have better performance and mate different frequency ranges, easy to adjust.Discuss five are inlayed different electronic component better embodiment at antenna different parts in detail below.
As shown in Figure 2, Fig. 2 is the front view of the present invention first better embodiment, in Fig. 2, feeder line 1 is preset with the headspace 21, the headspace 22 that embed perceptual electronic component and/or resistance, the position in the embedding electronic component space of presetting can be the optional position on feeder line 1, and can be one or more, present embodiment be two.The perceptual electronic component embedded in headspace 21 and headspace 22 can change the inductance value on feeder line 1.Using formula:
square being inversely proportional to, so when the operating frequency needed be lower operating frequency, by changing the inductance value realization of inductance or the perceptual electronic component embedded of the size of known inductance value and operating frequency.In the present embodiment, the inductance value range of the perceptual electronic component of embedding is between 0 to 5uH, if the inductance value of the perceptual electronic component embedded is too large, alternating signal will be consumed by inductive element thus have influence on the radiation efficiency of antenna.This kind of antenna has the good radiation characteristic of multiple frequency range, five main radiation frequencies are distributed to 5.5GHz from 900MHz always, almost cover GSM, CDMA, bluetooth, W-Lan (IEEE802.11 agreement), each main communication frequency such as GPS, TD-LTE, there is very high integrated level and change the object of operating frequency of antenna by regulating the inductance value on feeder line to reach.Certainly, also two resistance can be embedded, to improve the radiation resistance of antenna in headspace 21 with headspace 22.Can imagine ground, headspace 21 and headspace 22 also can be embed a resistance and a perceptual electronic component respectively, have both achieved the adjustment of operating frequency, and can improve again the radiation resistance of antenna.Meanwhile, also only one of can add electronic component wherein in headspace 21 and headspace 22, another space is by wire short circuit.
As shown in Figure 3, Fig. 3 is the front view of the present invention second better embodiment, in Fig. 3, between feeder line 1 and the metal routing 201 of adjacent feeders 1, be preset with the headspace 31 embedding capacitive electrical element, the position in embedding electronic component space of presetting can be the optional position between the metal routing 201 of feeder line 1 and adjacent feeders 1.In Fig. 3, headspace 31 is the space embedding capacitive electrical element in the present embodiment, certain coupling capacitance itself is formed between feeder line 1 and the first sheet metal 2, here by embedding the signal coupling between capacitive electrical element regulation feeder line 1 and the first sheet metal 2, using formula:
, square being inversely proportional to, so when the operating frequency needed be lower operating frequency, by changing the capacitance realization of electric capacity or the perceptual electronic component embedded of the size of known capacitance and operating frequency.In the present embodiment, the capacitance value range of the capacitive electrical element added is usually between 0 to 2pF, but the capacitance embedded along with the change of operating frequency of antenna also may exceed the scope of 0 to 2pF.
As shown in Figure 4, Fig. 4 is the front view of the present invention the 3rd better embodiment, in Fig. 4, micro groove structure 100 is reserved with the headspace 41,42 embedding perceptual electronic component and/or resistance, embed headspace 41 and headspace 42 that the space of electronic component is not only confined to provide in figure, as long as other positions satisfy condition.The object embedding perceptual electronic component is herein the inductance value increasing micro groove structure internal resonant structure, thus plays the effect of adjustment to the resonance frequency of antenna and bandwidth of operation; Identical with the first better embodiment, the object of embedded resistor improves the radiation resistance of antenna herein.So to embedding perceptual electronic component or resistance, then determine as required.In addition in the space not embedding electronic component, adopt wire short circuit.
As shown in Figure 5, Fig. 5 is the front view of the present invention the 4th better embodiment, in Fig. 5, the metal routing 202,203 that micro groove structure 100 adjacent slot is formed is preset with the headspace 51,52 embedding capacitive electrical element, embed the space of electronic component not only to limit to and the headspace 51,52 that provides in Fig. 6, as long as other positions satisfy condition.The capacitive electrical element embedded can change the resonance performance of micro groove structure, finally improves Q value and the resonant operational point of antenna.As common practise, we know, the pass of passband BW and resonance frequency w0 and quality factor q is: BW=wo/Q, and from this relational expression, Q greatly then passband is narrow, the little then pass band of Q.And Q=wL/R=1/wRC wherein: Q is quality factor; Supply frequency when w is circuit resonance; L is circuit inductance values; R is values of circuit resistances; C is circuit capacitance value, and from Q=wL/R=1/wRC formula, Q and C is inverse ratio, therefore, can reduce Q value, passband is broadened by adding capacitive electrical element.
As shown in Figure 6, Fig. 6 is the front view of the present invention the 5th better embodiment, in Fig. 6, inventive antenna is at feeder line 1, micro groove structure 100, between the metal routing 201 of feeder line 1 and adjacent feeders 1, these four positions of metal routing 202 that micro groove structure 100 adjacent slot is formed all are arranged the headspace that electronic component embeds, namely the headspace 61 on feeder line 1, headspace 62 on micro groove structure 100, 63, headspace 64 between the metal routing 201 of feeder line 1 and adjacent feeders 1, the metal routing 202 that micro groove structure 100 adjacent slot is formed, headspace 65 on 203, 66.Certainly the position provided in an embodiment is not uniqueness, and in the present embodiment, in above-mentioned space, add electronic component to regulate the performance of antenna, the principle of its principle and first to fourth better embodiment is similar.
The present invention also provides a kind of multiple-input and multiple-output (MIMO) antenna comprising multiple above-mentioned antenna.In mimo antenna, the feeder line 1 of each antenna accesses a transmitter/receiver, all transmitter/receiver access baseband signal processors.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (9)
1. an antenna, is characterized in that: described antenna comprises: feeder line, the first sheet metal, the second sheet metal; Described feeder line is by the first sheet metal described in coupled modes feed-in, and described second sheet metal is oppositely arranged with described first sheet metal and is electrically connected with described feeder line; On described first sheet metal, hollow out has micro groove structure to form metal routing on described first sheet metal, described second sheet metal, for the micro groove structure couple feed that the first sheet metal is formed, reduces the demand of described feeder line to the micro groove structure couple feed that the first sheet metal is formed; Described antenna is provided with the headspace that one or more electronic component embeds, described headspace is pad, described headspace is arranged on described feeder line and/or described micro groove structure, and/or described headspace to be arranged between described feeder line and the metal routing of adjacent described feeder line and to be connected the metal routing of described feeder line and adjacent described feeder line, and/or described headspace be arranged at described micro groove structure adjacent slot formed metal routing on and connect described adjacent slot, by wire, headspace is electrically connected in the unemployed situation of headspace.
2. antenna as claimed in claim 1, is characterized in that: described micro groove structure comprise complementary opening resonance loop structure, complementary helix structure, opening helical ring structure, two opening helical ring structure, complementary folding line structure and derived by several structure above, compound, combination or organize the micro groove structure that battle array obtains.
3. antenna as claimed in claim 1, is characterized in that: described electronic component is perceptual electronic component, capacitive electrical element or resistance.
4. antenna as claimed in claim 3, is characterized in that: described perceptual electronic component inductance value range is 0 to 5uH.
5. antenna as claimed in claim 3, is characterized in that: described capacitive electrical component capacitance value scope is 0 to 2pF.
6. antenna as claimed in claim 2, is characterized in that: described micro groove structure is carved by etching, brill, ion carves hollow out in described first sheet metal.
7. antenna as claimed in claim 1, is characterized in that: described antenna also comprises the medium be filled between described first sheet metal and described second sheet metal.
8. antenna as claimed in claim 7, is characterized in that: described second sheet metal is electrically connected by the plated-through hole be formed on described medium with described feeder line.
9. a mimo antenna, is characterized in that: comprise multiple antenna as claimed in claim 1, and each feeder line of described multiple antenna accesses reception/transmitter separately, and whole described reception/transmitters is all connected to baseband signal processor.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110144982.8A CN102800937B (en) | 2011-05-31 | 2011-05-31 | A kind of antenna and there is the mimo antenna of this antenna |
| 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 |
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| CN201110144982.8A CN102800937B (en) | 2011-05-31 | 2011-05-31 | A kind of antenna and there is the mimo antenna of this antenna |
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| CN102800937A CN102800937A (en) | 2012-11-28 |
| CN102800937B true CN102800937B (en) | 2015-09-09 |
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| CN201110144982.8A Active CN102800937B (en) | 2011-03-14 | 2011-05-31 | A kind of antenna and there is the mimo antenna of this antenna |
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| CN114966542A (en) * | 2022-07-29 | 2022-08-30 | 合肥有感科技有限责任公司 | Digital key positioning system and positioning method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740862A (en) * | 2008-11-20 | 2010-06-16 | 东莞市启汉电子科技有限公司 | Dipole antenna of RF chip |
| CN202434689U (en) * | 2011-05-31 | 2012-09-12 | 深圳光启高等理工研究院 | Antenna and MIMO antenna having antenna |
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| KR100859864B1 (en) * | 2005-06-13 | 2008-09-24 | 삼성전자주식회사 | Plate board type MIMO array antenna comprising isolation element |
| 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 |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740862A (en) * | 2008-11-20 | 2010-06-16 | 东莞市启汉电子科技有限公司 | Dipole antenna of RF chip |
| CN202434689U (en) * | 2011-05-31 | 2012-09-12 | 深圳光启高等理工研究院 | Antenna and MIMO antenna having antenna |
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