CN102683805A - Adjustable radio frequency antenna - Google Patents
Adjustable radio frequency antenna Download PDFInfo
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- CN102683805A CN102683805A CN2011100621889A CN201110062188A CN102683805A CN 102683805 A CN102683805 A CN 102683805A CN 2011100621889 A CN2011100621889 A CN 2011100621889A CN 201110062188 A CN201110062188 A CN 201110062188A CN 102683805 A CN102683805 A CN 102683805A
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Abstract
The invention relates to an adjustable radio frequency antenna, which comprises a feeder line, a metal strip and a short-circuit point, wherein the feeder line is connected with the metal strip through the short-circuit point, a metal micro structure is carved on the metal strip, and a space for embedding electronic elements is pre-arranged on the radio frequency antenna. According to the adjustable radio frequency antenna, the space for embedding the electronic elements is pre-arranged on the radio frequency antenna, thus different electronic elements are additionally provided and the antenna can be regulated according to specific needs.
Description
Technical field
The present invention relates to less radio-frequency device technology field, more particularly, relate to a kind of adjustable radio-frequency antenna.
Background technology
Along with the high development of semiconductor technology, current electronic system integrated level has been proposed increasingly high requirement, miniaturization of devices becomes the technical problem that whole industry is paid special attention to.Yet, be different from the development that the IC chip is followed " Moore's Law ", as other important composition---the radio-frequency module of electronic system, but be faced with the highly difficult technological challenge of device miniaturization.Radio-frequency module has mainly comprised main devices such as mixing, power amplifier, filtering, radio signal transmission, matching network and antenna.Wherein, antenna is as the radiating element and the receiving device of final radiofrequency signal, and its operating characteristic will directly influence the service behaviour of whole electronic system.Yet important indicators such as the size of antenna, bandwidth, gain, radiation efficiency have but received the restriction (gain margin under the fixed dimension, bandwidth limit etc.) of basic physical principle.The basic principle of these index limit makes the miniaturization technology difficulty of antenna considerably beyond other device, and because the complexity of the electromagnetic field analysis of radio-frequency devices, approaching these limiting values all becomes huge technological challenge.
Simultaneously, complicated along with contemporary electronic systems, the demand of multimode service becomes more and more important in systems such as radio communication, wireless access, satellite communication, radio data network.And the demand of multimode service has further increased the complexity of miniature antenna multimode design.Remove the technological challenge of miniaturization, 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 required the miniaturization of antenna size harshly and guaranteed good isolation degree, radiance and antijamming capability simultaneously.Yet 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).The radiation operating frequency of traditional antenna directly and the size positive correlation of antenna, the area positive correlation of bandwidth and antenna makes the design of antenna need the physical length of half-wavelength usually.More in the complicated electronic system, antenna needs multimode operation, just need design at the impedance matching network outside the feed antenna forehead at some.But the increase that impedance matching network is extra the feeder line design of electronic system, increased radio system area simultaneously matching network also introduced many energy losses, be difficult to satisfy the requirement of system design of low-power consumption.Therefore, miniaturization, multimodal new antenna technology become an important technology bottleneck of contemporary electronics integrated system.
The ultra material radio frequency miniature antenna that Fig. 1 designs for prior art, 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, has not only guaranteed the miniaturization and the multimodeization of antenna, has also saved 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 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 adjustable radio-frequency antenna is provided, and 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; But comprise feeder line, sheet metal and short circuit point; But said feeder line is connected through short circuit point with sheet metal; Engraved metal micro structure on the said sheet metal, said adjustable radio-frequency antenna is preset with the space that electronic component embeds.
Further, said space is arranged at least one of this three positions between feeder line, metal micro structure and feeder line and the metal micro structure.
Further, said space is arranged on the cabling of metal micro structure, and said electronic component is embedded on the cabling of metal micro structure.
Further, said space is arranged in the cabling interval of metal micro structure, and said electronic component is embedded in the cabling interval of metal micro structure.
Further, said electronic component is perceptual electronic component, capacitive electronic component or resistance.
Further, said perceptual electronic component is for using the original paper that demonstrates inductance characteristic under the operating frequency.
Further, said capacitive electronic component is for using the original paper that demonstrates capacitance characteristic under the operating frequency.
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 space is the pad that is formed on the radio-frequency antenna.
Adjustable radio-frequency 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 at least one of these three positions between feeder line, metal micro structure and feeder line and the metal micro structure; 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.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the antenna structure view of not reserving when embedding the electronic component space;
Fig. 2 is adjustable radio-frequency antenna is reserved the space that embeds electronic component on feeder line a sketch map;
Fig. 3 is adjustable radio-frequency antenna is reserved the space that embeds electronic component between feeder line and metal micro structure a sketch map;
Fig. 4 is a sketch map of on the cabling of metal micro structure, reserving the space that embeds electronic component in adjustable radio-frequency antenna;
Fig. 5 is a sketch map of in the cabling interval of metal micro structure, reserving the space that embeds electronic component in adjustable radio-frequency antenna;
Fig. 6 be in adjustable radio-frequency antenna between feeder line, feeder line and metal micro structure, on the cabling of metal micro structure and the cabling of metal micro structure all reserves the sketch map in the space of embedding electronic component at interval.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further description:
Extremely shown in Figure 6 like Fig. 1; But the adjustable radio-frequency antenna among the present invention comprises feeder line 1, sheet metal 2 and short circuit point 3; But feeder line 1 is connected through short circuit point 3 with sheet metal 2; Engraved metal micro structure 10 on the sheet metal 2, said metal micro structure can be a kind of in complementary split ring resonator structure, complementary helix structure, opening helical ring structure, two opening helical ring structure, the complementary folding line structure and through several kinds of structures in front are derived, compound, combination or group battle array obtain a metal micro structure.Several kinds of top micro-structurals can be the one Chinese patent application of CN201490337 with reference to publication number specifically.Said adjustable radio-frequency antenna is preset with the space that embeds electronic component at least one of these three positions between feeder line 1, metal micro structure and metal micro structure and the feeder line; Be used to regulate the operating frequency of antenna; Need the kind of the electronic component of embedding to embed different electronic components according to concrete needs in corresponding space, the form of pad is taked in the space of reservation.Under the unemployed situation in space, can be through lead with the space electric connection.For example, the space is in the form that adopts pad, and when pad was not welded with electronic component, available wire was communicated with it, guaranteed its electrical connection.
Above-mentioned electronic component is generally perceptual electronic component, capacitive electronic component or resistance, can certainly be its combination.
Divide five embodiment to come to introduce in detail the present invention below.
Embodiment one
As shown in Figure 2, in the present embodiment, on feeder line 1, be preset with the space that embeds perceptual electronic component and/or resistance, the position in preset embedding electronic component space can be the optional position on the feeder line 1, and can have a plurality of.The space has two among Fig. 2, and promptly space 21 and space 22 can embed two perceptual electronic components, to change the inductance value on the feeder line 1 in space 21 and space 22.Using formula: f=1/ (2 π √ LC) can know square being inversely proportional to of size and operating frequency of inductance value, so when the operating frequency that needs be low operating frequency, through suitable embedding inductance or the realization of perceptual electronic component.In the present embodiment, the inductance value range of the perceptual electronic component of adding is between 0-5uH, thereby if too large-signal will be had influence on the radiation efficiency of antenna by inductive element consumption.This kind radio-frequency antenna has the good radiation characteristic of a plurality of frequency ranges; Five main radiation frequencies are distributed to 5.5GHz from 900MHz always; Almost contained each main communication frequencys such as GSM, CDMA, bluetooth, WLan (IEEE802.11 agreement), GPS, TD-LTE, had very high integrated level and can reach the purpose that changes operating frequency of antenna through the inductance value on the feeder line is regulated.Certainly space 21 and space 22 also can be to embed a resistance and a perceptual electronic component respectively, have promptly realized the adjusting of operating frequency, can improve the radiation resistance of antenna again.Certainly also can only add electronic component therein in space 21 and the space 22, the lead short circuit is used in another space.
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 that embeds the capacitive electronic component, the position in preset embedding electronic component space can be the optional position between feeder line 1 and the metal micro structure 10.31 is a space 31 that embeds the capacitive electronic component in the present embodiment among Fig. 3; Itself has certain electric capacity between feeder line 1 and the sheet metal 2; Here regulate the signal coupling between feeder line 1 and the sheet metal 2 through embedding the capacitive electronic component, using formula: f=1/ (2 π √ LC) can know square being inversely proportional to of size and operating frequency of capacitance; So, realize through embedding the higher perceptual electronic component of capacitance when the operating frequency that needs is when hanging down operating frequency.In the present embodiment, the capacitance scope of the capacitive electronic component of adding 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.Can certainly between feeder line 1 and metal micro structure 10, preset a plurality of spaces.
Embodiment three
As shown in Figure 4; In the present embodiment; On the cabling of metal micro structure 10, be reserved with the space that embeds perceptual electronic component and/or resistance, the space that embeds electronic component not only is confined to the space 41,42 and 43 that provides among the figure, as long as other positions satisfy condition all can.The purpose that embeds perceptual electronic component here is the inductance value that increases metal micro structure internal resonance structure, thus the effect that the resonance frequency and the bandwidth of operation of antenna played adjusting; Identical with embodiment one, 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.
Embodiment four
As shown in Figure 5, in the present embodiment, be reserved with the space that embeds the capacitive electronic component at interval at the cabling of metal micro structure, the space that embeds electronic component not only limit to Fig. 5 in the space 51, the space 52 that provide, as long as other positions satisfy condition all can.The capacitive electronic component that embeds can change the resonance performance of metal micro structure, 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 shows that Q greatly then passband is narrow, the little then pass band of Q.Q=wL/R=1/wRC is 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.Certainly as required, also can be only in space 51 and the space 52 add electronic component in one therein, the lead short circuit is used in another space.
Embodiment five
As shown in Figure 6; In the present embodiment; In adjustable radio-frequency antenna between feeder line, feeder line and metal micro structure, on the cabling of metal micro structure and the cabling of metal micro structure all reserves the space of embedding electronic component at interval, embodiment is consistent with the principle of embodiment one to four.
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 to protection scope of the present invention.
Claims (8)
1. adjustable radio-frequency antenna; But comprise feeder line, sheet metal and short circuit point, but said feeder line be connected through short circuit point with sheet metal, engraved metal micro structure on the said metal structure; It is characterized in that said radio-frequency antenna is preset with the space that electronic component embeds.
2. adjustable radio-frequency antenna according to claim 1 is characterized in that, said space is arranged at least one of this three positions between feeder line, metal micro structure and feeder line and the metal micro structure.
3. radio-frequency antenna according to claim 2 is characterized in that, said space is arranged on the cabling of metal micro structure, and said electronic component is embedded on the cabling of metal micro structure.
4. adjustable radio-frequency antenna according to claim 2 is characterized in that, said space is arranged in the cabling interval of metal micro structure, and said electronic component is embedded in the cabling interval of metal micro structure.
5. according to any described adjustable radio-frequency antenna of claim 1 to 4, it is characterized in that said electronic component is perceptual electronic component, capacitive electronic component or resistance.
6. adjustable radio-frequency antenna according to claim 5 is characterized in that the scope of said perceptual electronic component inductance value is between 0-5uH.
7. adjustable radio-frequency antenna according to claim 5 is characterized in that, the scope of said capacitive electronic component capacitance is between 0-2pF.
8. adjustable radio-frequency antenna according to claim 5 is characterized in that, said space is the pad that is formed on the 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102683805A true CN102683805A (en) | 2012-09-19 |
| CN102683805B CN102683805B (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110062188.9A Active CN102683805B (en) | 2011-03-14 | 2011-03-14 | A kind of adjustable radio-frequency antenna |
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| Country | Link |
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| CN (1) | CN102683805B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800939A (en) * | 2011-05-31 | 2012-11-28 | 深圳光启高等理工研究院 | Antenna and MIMO (multiple input multiple output) antenna with same |
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| CN101227023A (en) * | 2006-12-29 | 2008-07-23 | 美国博通公司 | Integrated circuit and antenna structure thereof |
| CN101227024A (en) * | 2006-12-29 | 2008-07-23 | 美国博通公司 | Integrated circuit antenna structure |
| 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)
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| 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 |
| CN101227023A (en) * | 2006-12-29 | 2008-07-23 | 美国博通公司 | Integrated circuit and antenna structure thereof |
| CN101227024A (en) * | 2006-12-29 | 2008-07-23 | 美国博通公司 | Integrated circuit antenna structure |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
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| CN102800939A (en) * | 2011-05-31 | 2012-11-28 | 深圳光启高等理工研究院 | Antenna and MIMO (multiple input multiple output) antenna with same |
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| CN102683805B (en) | 2015-10-07 |
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