CN102683832A - Asymmetric radio frequency antenna - Google Patents
Asymmetric radio frequency antenna Download PDFInfo
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- CN102683832A CN102683832A CN2011100621785A CN201110062178A CN102683832A CN 102683832 A CN102683832 A CN 102683832A CN 2011100621785 A CN2011100621785 A CN 2011100621785A CN 201110062178 A CN201110062178 A CN 201110062178A CN 102683832 A CN102683832 A CN 102683832A
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Abstract
The invention relates to an asymmetric radio frequency antenna. The asymmetric radio frequency antenna comprises a metal sheet and a feeder line which is connected with the metal sheet, wherein a first metal microstructure and a second metal microstructure which are asymmetric to each other are at least carved on the metal sheet, so that the antenna has at least two different resonant frequencies. According to the asymmetric radio frequency antenna, the first metal microstructure and the second metal microstructure which are asymmetric to each other are at least carved on the metal sheet, so that a plurality of resonance points can be generated easily. The resonance points are not offset easily, so that multi-mode resonance is easy to realize.
Description
Technical field
The present invention relates to wireless communication field, more particularly, relate to a kind of asymmetric radio-frequency 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.
Summary of the invention
Technical problem to be solved by this invention is, to the above-mentioned defective of existing ultra material miniature antenna, a kind of asymmetric radio-frequency antenna is provided, and this antenna is easy to realize multimodeization.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of asymmetric radio-frequency antenna; Comprise sheet metal and the feeder line that is connected with sheet metal; At least engrave asymmetrical first metal micro structure and second metal micro structure on the said sheet metal, made said antenna have at least two different resonant.
Further, said first metal micro structure is 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.
Further, said second metal micro structure is 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.
Further, but said sheet metal is provided with the short circuit point, but said sheet metal is connected with said feeder line through described short circuit point.
Further, said asymmetric radio-frequency antenna also comprises the medium that is used to place said sheet metal and feeder line.
Further, said medium is air, pottery, epoxy resin base plate or ptfe substrate.
According to asymmetric radio-frequency antenna of the present invention; On same sheet metal, engraved asymmetrical first metal micro structure and second metal micro structure at least, therefore can produce a plurality of resonance points at an easy rate, and resonance point is difficult for offsetting; Be easy to realize multimode resonance, realize the multimodeization of antenna easily.
Description of drawings
Fig. 1 is the structural representation of the asymmetric radio-frequency antenna that proposes of the present invention;
Fig. 2 is the structural representation of asymmetric radio-frequency antenna first embodiment that proposes of the present invention;
Fig. 3 is the structural representation of asymmetric radio-frequency antenna second embodiment that proposes of the present invention;
Fig. 4 is the structural representation of asymmetric radio-frequency antenna the 3rd embodiment that proposes of the present invention.
Embodiment
As shown in Figure 1; According to asymmetric radio-frequency antenna of the present invention; Comprise sheet metal 1 and the feeder line 2 that is connected with sheet metal 1, engraved asymmetrical first metal micro structure 3 and second metal micro structure 4 on the said sheet metal 1, make said antenna have at least two different resonant.Here asymmetric is meant pattern, size and/or locus different of first metal micro structure 3 and second metal micro structure 4, and first metal micro structure 3 that is caused and the resonance frequency of second metal micro structure 4 are different.But said sheet metal 1 of the present invention is provided with short circuit point 5, but said sheet metal 1 is connected with said feeder line 2 through described short circuit point 5.
Said first metal micro structure 3 of the present invention can 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.Certainly also comprise through above-mentioned several kinds of structures derive, compound or a structure that the group battle array obtains.Its concrete structure please refer to the Chinese patent that publication number is CN201490337.
Said second metal micro structure 4 of the present invention is 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.Certainly also comprise through above-mentioned several kinds of structures derive, compound or a structure that the group battle array obtains.Its concrete structure please refer to the Chinese patent that publication number is CN201490337.
If adopt first metal micro structure and second metal micro structure (resonance frequency is identical) of symmetry, after intercoupling, can cause antenna Q value (weighing the major parameter of inductance component) to increase, corresponding bandwidth BW will diminish, and be unfavorable for the realization of multimode resonance.And adopting asymmetrical at least first metal micro structure and second micro-structural, its electric capacity and inductance can be different, thereby produce a plurality of different resonance points, and the difficult counteracting of resonance point, help the multimodeization that realizes that antenna is abundant.
The version of first metal micro structure 3 of the present invention and second metal micro structure 4 can be the same, also can be different.And the asymmetric degree of first metal micro structure 3 and second metal micro structure 4 can be regulated as required.Thereby realize abundant adjustable multimode resonance.
And the present invention as required, on a slice sheet metal, more metal micro structure can also be set, so that described antenna has the different resonant more than 3.
As shown in Figure 2; Structural representation for the first embodiment of the present invention; Its first metal micro structure 31 and second metal micro structure 41 are unsymmetric structure, and wherein, first metal micro structure 31 and second metal micro structure link together; Because the difference of pattern causes the asymmetric of its structure, make the regional separately resonance frequency of win metal micro structure 31 and second metal micro structure 41 different.
Shown in Figure 3; Structural representation for the second embodiment of the present invention; Its first metal micro structure 32 and second metal micro structure 42 are unsymmetric structure, and wherein, first metal micro structure 32 and second metal micro structure 42 are separately independently; Because the difference of pattern causes the asymmetric of its structure, make the regional separately resonance frequency of win metal micro structure 32 and second metal micro structure 42 different.
Shown in Figure 4; Be the structural representation of the third embodiment of the present invention, its first metal micro structure 33 and second metal micro structure 43 are unsymmetric structure, wherein; First metal micro structure 33 and second metal micro structure 43 are separately independently; Its pattern is identical, but the difference of its size causes the asymmetric of its structure, and the resonance frequency in zone is different separately to make win metal micro structure 33 and second metal micro structure 43.
The present invention is not limited to the above embodiments, has engraved asymmetrical first metal micro structure and second metal micro structure on the sheet metal at least, makes said antenna have at least two different resonant, just should be within protection scope of the present invention.
Said asymmetric radio-frequency antenna of the present invention also comprises the medium (not shown) that is used to place said sheet metal 1 and feeder line 2.Said medium is a kind of in air, pottery, epoxy resin base plate or the ptfe substrate, can certainly be other medium substrate.Preferably, adopt air.Do not need the extra substrate that other material is set, cost is low, and is easy to make.
Claims (6)
1. asymmetric radio-frequency antenna; Comprise sheet metal and the feeder line that is connected with sheet metal; It is characterized in that, engraved asymmetrical first metal micro structure and second metal micro structure on the said sheet metal at least, make said antenna have at least two different resonant.
2. asymmetric radio-frequency antenna according to claim 1; It is characterized in that said first metal micro structure is 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.
3. asymmetric radio-frequency antenna according to claim 1; It is characterized in that said second metal micro structure is 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.
4. asymmetric radio-frequency antenna according to claim 1 is characterized in that, but said sheet metal is provided with the short circuit point, but said sheet metal is connected with said feeder line through described short circuit point.
5. asymmetric radio-frequency antenna according to claim 1 is characterized in that, said asymmetric radio-frequency antenna also comprises the medium that is used to place said sheet metal and feeder line.
6. asymmetric radio-frequency antenna according to claim 5 is characterized in that, said medium is air, pottery, epoxy resin base plate or ptfe substrate.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110062178.5A CN102683832B (en) | 2011-03-14 | 2011-03-14 | A kind of asymmetric radio frequency antenna |
| PCT/CN2011/080436 WO2012122793A1 (en) | 2011-03-14 | 2011-09-30 | Asymmetric antenna and mimo antenna |
| TW100135539A TWI501468B (en) | 2011-03-14 | 2011-09-30 | Asymmetric antenna and a mimo antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110062178.5A CN102683832B (en) | 2011-03-14 | 2011-03-14 | A kind of asymmetric radio frequency antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102683832A true CN102683832A (en) | 2012-09-19 |
| CN102683832B CN102683832B (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110062178.5A Active CN102683832B (en) | 2011-03-14 | 2011-03-14 | A kind of asymmetric radio frequency antenna |
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| Country | Link |
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| CN (1) | CN102683832B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847534A (en) * | 2018-05-25 | 2018-11-20 | 哈尔滨工程大学 | A kind of multi-resonant minor matters antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0929913A1 (en) * | 1996-10-02 | 1999-07-21 | Nortel Networks Limited | A multi resonant radio antenna |
| CN101667680A (en) * | 2009-08-31 | 2010-03-10 | 深圳市启汉科技有限公司 | Monopole radio frequency antenna |
| 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 |
| CN101958460A (en) * | 2009-07-17 | 2011-01-26 | 捷讯研究有限公司 | Multiple-grooved antenna and mobile device |
-
2011
- 2011-03-14 CN CN201110062178.5A patent/CN102683832B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0929913A1 (en) * | 1996-10-02 | 1999-07-21 | Nortel Networks Limited | A multi resonant radio antenna |
| 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 |
| CN101958460A (en) * | 2009-07-17 | 2011-01-26 | 捷讯研究有限公司 | Multiple-grooved antenna and mobile device |
| CN101667680A (en) * | 2009-08-31 | 2010-03-10 | 深圳市启汉科技有限公司 | Monopole radio frequency antenna |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847534A (en) * | 2018-05-25 | 2018-11-20 | 哈尔滨工程大学 | A kind of multi-resonant minor matters antenna |
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| Publication number | Publication date |
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| CN102683832B (en) | 2015-11-25 |
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