CN102683805B - A kind of adjustable radio-frequency antenna - Google Patents
A kind of adjustable radio-frequency antenna Download PDFInfo
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- CN102683805B CN102683805B CN201110062188.9A CN201110062188A CN102683805B CN 102683805 B CN102683805 B CN 102683805B CN 201110062188 A CN201110062188 A CN 201110062188A CN 102683805 B CN102683805 B CN 102683805B
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Abstract
The present invention relates to a kind of adjustable radio-frequency antenna, comprise feeder line, sheet metal and can short circuit point, described feeder line and sheet metal, by being connected by short circuit point, described sheet metal have engraved metal micro structure, and described radio-frequency antenna is preset with the space that electronic component embeds.According to the adjustable radio-frequency antenna of the present invention, described adjustable radio-frequency antenna is preset with the space that electronic component embeds, and therefore adds the adjustment that different electronic components can realize antenna according to specific needs.
Description
Technical field
The present invention relates to less radio-frequency device arts, more particularly, relate to a kind of adjustable radio-frequency 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 above-mentioned antenna in use will run into the problem of versatility and the poor performance opposite sex.
Summary of the invention
The technical problem to be solved in the present invention is, larger otherness is there is for antenna operational environment and electromagnetic property in different product, cause antenna performance in design and use, there is larger difference, there is provided a kind of adjustable radio-frequency antenna, this antenna has stronger adaptability and versatility.
The technical solution adopted for the present invention to solve the technical problems is: a kind of adjustable radio-frequency antenna, comprise feeder line, sheet metal and can short circuit point, described feeder line and sheet metal are by being connected by short circuit point, described sheet metal has engraved metal micro structure, and described adjustable radio-frequency antenna is preset with the space that electronic component embeds.
Further, described spatial placement feeder line, metal micro structure and between feeder line and metal micro structure these three positions at least one on.
Further, described spatial placement is on the cabling of metal micro structure, and described electronic component is embedded on the cabling of metal micro structure.
Further, described spatial placement is in the cabling interval of metal micro structure, and described electronic component is embedded in the cabling interval of metal micro structure.
Further, described electronic component is perceptual electronic component, capacitive electrical element or resistance.
Further, described perceptual electronic component is using the original paper presenting inductance characteristic under operating frequency.
Further, described capacitive electrical element is using the original paper presenting capacitance characteristic under operating frequency.
Further, the scope of described perceptual electronic component inductance value is between 0-5uH.
Further, the scope of described capacitive electrical component capacitance value is between 0-2pF.
Further, described space is the pad be formed on radio-frequency antenna.
Implement adjustable radio-frequency antenna of the present invention, relative to existing antenna, there is following beneficial effect: by feeder line, metal micro structure and between feeder line and metal micro structure these three positions at least one on arrange electronic component embed space, can be finely tuned by the performance of performance to antenna changing the electronic component embedded, design the antenna of the requirement meeting adaptability and versatility.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 does not reserve antenna structure view when embedding electronic component space;
Fig. 2 is adjustable radio-frequency antenna reserved schematic diagram embedding the space of electronic component on feeder line;
Fig. 3 is adjustable radio-frequency antenna reserved schematic diagram embedding the space of electronic component between feeder line and metal micro structure;
Fig. 4 is the schematic diagram in the space of reserved embedding electronic component on the cabling of metal micro structure in adjustable radio-frequency antenna;
Fig. 5 is the schematic diagram in the space of reserved embedding electronic component in the cabling interval of metal micro structure in adjustable radio-frequency antenna;
Fig. 6 be in adjustable radio-frequency antenna at feeder line, between feeder line and metal micro structure, on the cabling of metal micro structure and all reserve the schematic diagram in the space embedding electronic component in the cabling interval of metal micro structure.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention will be further described:
As shown in Figures 1 to 6, adjustable radio-frequency antenna in the present invention comprises feeder line 1, sheet metal 2 and can short circuit point 3, feeder line 1 and sheet metal 2 are by being connected by short circuit point 3, sheet metal 2 has been engraved metal micro structure 10, described metal micro structure can be complementary opening resonance loop structure, complementary helix structure, opening helical ring structure, two opening helical ring structure, a kind of in complementary folding line structure and derived by several structure above, metal micro structure that compound, combination or group battle array obtain.Several micro-structurals above can be specifically the Chinese patent application of CN201490337 with reference to publication number.Described adjustable radio-frequency antenna feeder line 1, metal micro structure and between metal micro structure and feeder line these three positions at least one on be preset with and embed the space of electronic component, for regulating the operating frequency of antenna, need the kind of the electronic component embedded according to concrete needs at the different electronic component of corresponding spatial embedding, the form of pad is taked in reserved space.In the unemployed situation in space, can by wire by space electric connection.Such as, space is when the form adopting pad, and when pad is not welded with electronic component, available wire is communicated with, and ensures that it is electrically connected.
Above-mentioned electronic component is generally perceptual electronic component, capacitive electrical element or resistance, can certainly be its combination.
Five embodiments are divided to introduce the present invention in detail below.
Embodiment one
As shown in Figure 2, in the present embodiment, feeder line 1 is preset with the space embedding perceptual electronic component and/or resistance, and the position in default embedding electronic component space can be the optional position on feeder line 1, and can have multiple.In Fig. 2, space has two, i.e. space 21 and space 22, can embed two perceptual electronic components, to change the inductance value on feeder line 1 in space 21 with space 22.Using formula: f=1/ (2 π √ LC), square being inversely proportional to, so when the operating frequency needed be lower operating frequency, by suitable embedding inductance or the realization of perceptual electronic component of the size of known inductance value and operating frequency.In the present embodiment, the inductance value range of the perceptual electronic component added is between 0-5uH, if too large-signal will be consumed by inductive element thus have influence on the radiation efficiency of antenna.This kind of radio-frequency 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, WLan (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.Certain space 21 and space 22 also can be embed a resistance and a perceptual electronic component respectively, namely achieve the adjustment of operating frequency, can improve again the radiation resistance of antenna.Also only electronic component can be added wherein, another space wire short circuit in certain space 21 and space 22.
Embodiment two
As shown in Figure 3, in the present embodiment, between feeder line 1 and metal micro structure 10, be preset with the space embedding capacitive electrical element, the position in default embedding electronic component space can be the optional position between feeder line 1 and metal micro structure 10.In Fig. 3,31 is the space 31 embedding capacitive electrical element in the present embodiment, between feeder line 1 and sheet metal 2, itself there is certain electric capacity, here by embedding the signal coupling between capacitive electrical element regulation feeder line 1 and sheet metal 2, using formula: f=1/ (2 π √ LC), square being inversely proportional to of the size of known capacitance and operating frequency, so when the operating frequency needed is lower operating frequency, the perceptual electronic component higher by embedded capacitor value realizes.In the present embodiment, the capacitance value range of the capacitive electrical element added is usually between 0-2pF, but the capacitance embedded along with the change of operating frequency of antenna also may exceed the scope of 0-2pF.Multiple space can certainly be preset between feeder line 1 and metal micro structure 10.
Embodiment three
As shown in Figure 4, in the present embodiment, the cabling of metal micro structure 10 is reserved with the space embedding perceptual electronic component and/or resistance, and the space embedding electronic component is not only confined to the space 41,42 and 43 provided in figure, as long as other positions satisfy condition.The object embedding perceptual electronic component is herein the inductance value increasing metal micro structure internal resonant structure, thus plays the effect of adjustment to the resonance frequency of antenna and bandwidth of operation; Identical with embodiment one, 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.
Embodiment four
As shown in Figure 5, in the present embodiment, in the cabling interval of metal micro structure, be reserved with the space embedding capacitive electrical element, the space embedding electronic component not only limit to Fig. 5 in provide space 51, space 52, as long as other positions satisfy condition.The capacitive electrical element embedded can change the resonance performance of metal micro 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, shows, Q greatly then passband is narrow, the little then pass band of Q.Q=wL/R=1/wRC is wherein: Q is quality factor; Supply frequency when w is circuit resonance; L is inductance; R is the resistance of string; C is electric capacity, 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.Certainly as required, also only electronic component can be added, another space wire short circuit in one wherein in space 51 and space 52.
Embodiment five
As shown in Figure 6, in the present embodiment, at feeder line, between feeder line and metal micro structure, on the cabling of metal micro structure and all reserve the space embedding electronic component in the cabling interval of metal micro structure, embodiment is consistent with the principle of embodiment one to four in adjustable radio-frequency antenna.
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 to protection scope of the present invention.
Claims (4)
1. an adjustable radio-frequency antenna, comprise feeder line, sheet metal and can short circuit point, described feeder line and sheet metal are by being connected by short circuit point, described metal structure has engraved metal micro structure, it is characterized in that, described radio-frequency antenna be preset with electronic component embed space, for regulating the operating frequency of antenna, described spatial placement feeder line, metal micro structure and between feeder line and metal micro structure these three positions at least one on; Described space is communicated with wire when not embedding electronic component; Described electronic component is perceptual electronic component, capacitive electrical element or resistance, and the scope of described perceptual electronic component inductance value is between 0-5uH, and the scope of described capacitive electrical component capacitance value is between 0-2pF.
2. radio-frequency antenna according to claim 1, is characterized in that, described spatial placement is on the cabling of metal micro structure, and described electronic component is embedded on the cabling of metal micro structure.
3. adjustable radio-frequency antenna according to claim 1, is characterized in that, described spatial placement is in the cabling interval of metal micro structure, and described electronic component is embedded in the cabling interval of metal micro structure.
4. adjustable radio-frequency antenna according to claim 1, is characterized in that, described space is the pad be formed on radio-frequency antenna.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110062188.9A CN102683805B (en) | 2011-03-14 | 2011-03-14 | A kind of adjustable radio-frequency 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 |
|---|---|---|---|
| CN201110062188.9A CN102683805B (en) | 2011-03-14 | 2011-03-14 | A kind of adjustable radio-frequency antenna |
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| Publication Number | Publication Date |
|---|---|
| CN102683805A CN102683805A (en) | 2012-09-19 |
| CN102683805B true CN102683805B (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110062188.9A Active CN102683805B (en) | 2011-03-14 | 2011-03-14 | A kind of adjustable radio-frequency antenna |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102800939B (en) * | 2011-05-31 | 2016-07-20 | 深圳光启创新技术有限公司 | A kind of antenna and there is the mimo antenna of this antenna |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101227024A (en) * | 2006-12-29 | 2008-07-23 | 美国博通公司 | Integrated circuit antenna structure |
| CN101227023A (en) * | 2006-12-29 | 2008-07-23 | 美国博通公司 | Integrated circuit and antenna structure thereof |
| CN101501930A (en) * | 2006-08-14 | 2009-08-05 | 泰科电子瑞侃株式会社 | Antenna element and method for manufacturing same |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
| CN101894291A (en) * | 2010-07-28 | 2010-11-24 | 北京华大智宝电子系统有限公司 | Dual-interface SIM card |
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2011
- 2011-03-14 CN CN201110062188.9A patent/CN102683805B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101501930A (en) * | 2006-08-14 | 2009-08-05 | 泰科电子瑞侃株式会社 | Antenna element and method for manufacturing same |
| CN101227024A (en) * | 2006-12-29 | 2008-07-23 | 美国博通公司 | Integrated circuit antenna structure |
| CN101227023A (en) * | 2006-12-29 | 2008-07-23 | 美国博通公司 | Integrated circuit and antenna structure thereof |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
| CN101894291A (en) * | 2010-07-28 | 2010-11-24 | 北京华大智宝电子系统有限公司 | Dual-interface SIM card |
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| CN102683805A (en) | 2012-09-19 |
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