CN204696234U - A kind of ultra-wideband antenna based on fractal structure - Google Patents
A kind of ultra-wideband antenna based on fractal structure Download PDFInfo
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- CN204696234U CN204696234U CN201420633489.1U CN201420633489U CN204696234U CN 204696234 U CN204696234 U CN 204696234U CN 201420633489 U CN201420633489 U CN 201420633489U CN 204696234 U CN204696234 U CN 204696234U
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- 238000005530 etching Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 210000003746 feather Anatomy 0.000 claims abstract description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 12
- 238000004891 communication Methods 0.000 abstract description 8
- 238000010923 batch production Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
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- 238000013332 literature search Methods 0.000 description 1
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Abstract
Based on a ultra-wideband antenna for fractal structure, belong to wireless communication technology field.This ultra-wideband antenna, by dielectric-slab (3), to be printed in dielectric-slab (3) one side and the radiating element 2 be directly communicated with and feed element 4, and the ground unit (6) be printed on dielectric-slab another side is formed; Wherein: a. radiating element (2) for formed through more than twice or twice iterative fractal and be the metal patch of connected component, on it, etching has gap (1); B. ground unit (6) is trapezoidal metal patch, and the center etching of feather edge thereon has a rectangular slot (5).The utility model has the advantage of: 1, there is ultra broadband, multiple-frequency operation, good directionality, standing-wave ratio are little, and achieve the advantage of good impedance match.2, simple, the compact dimensions of structure, lightweight, loss is low, meets the requirement of planar design; 3, cost of manufacture is low, precision is high, favorable repeatability, is suitable for compact apparatus and uses, be convenient to batch production.
Description
Technical field
The utility model relates to a kind of ultra-wideband antenna based on fractal structure, belongs to wireless communication technology field.
Background technology
Ultra broadband (Ultra-wideband, UWB) technology is the one novel short distance high-rate wireless communication technology received much concern at present.2002, it is the ultra-broadband wireless communication frequency band of 7.5GHz that Federal Communications Committee (FCC) has issued a bandwidth criteria, the frequency range covered is 3.1GHz-10.6GHz, industry and academic in, Ultra-Wide Band Radio has had high input quantifier elimination work.Compared with the wireless communication technology that other are traditional, the technical characterstic of UWB mainly contains that transmission rate is high, communication distance is short, average transmit power is low, good concealment, is is not easily intercepted and captured, and high, the multi-path resolved rate of confidentiality is high, be suitable for pocket application etc.Traditional UWB technology uses baseband transmission, and without the need to carrying out rf modulations and demodulation, make UWB equipment power consumption little, cost is low, and flexibility is high, is suitable for pocket wireless application.
Antenna applications fractal technology is that one is more effectively expanded bandwidth sum and subtracted undersized technology, is also a kind of technology effectively realizing ultra broadband.Because fractal structure has the characteristic of self similarity, fractal antenna shows the characteristic of multifrequency, by regulating the parameter in fractal structure, mutually being furthered by each resonance point of multifrequency, and then realizing the broadband character of antenna.Secondly, because fractal structure has space filling properties, make microstrip antenna have miniaturized characteristic.Fractal structure extending bandwidth comes from the space filling and self-similarity forming fractal graph.After fractal, figure can comprise some tiny structures, and these structures create continuous print resonance, defines wider frequency band.Increase iterations, and then reach the requirement of ultra broadband.Therefore, fractal antenna technology greatly facilitates the development and apply of ultra-wideband antenna technology.
Ultra-wideband antenna based on fractal structure of the present utility model, by literature search, has no the open report identical with the utility model.
Summary of the invention
The purpose of this utility model is the deficiency overcoming prior art, and provides a kind of ultra-wideband antenna based on fractal structure.
As shown in Figure 1, ultra-wideband antenna structure based on fractal structure of the present utility model is by dielectric-slab (3), be printed on dielectric-slab one side upper and radiating element (2) that is that be directly communicated with and feed element (4), and be printed on ground unit (6) formation on dielectric-slab another side, wherein:
A. gap radiating element etched is made up of a circular gap being positioned at center and six symmetrical semicircle gaps, and such radiating element is actual fractal and formed through twice to a circular radiation unit;
B. ground unit (6) is trapezoidal metal patch, and the center etching of feather edge thereon has a rectangular slot (5).
Compared with prior art, tool has the following advantages the utility model:
1, there is ultra broadband, multiple-frequency operation, good directionality, standing-wave ratio are little, and achieve the advantage of good impedance match.
2, simple, the compact dimensions of structure, lightweight, loss is low, meets the requirement of planar design.
3, cost of manufacture is low, precision is high, favorable repeatability, is suitable for compact apparatus and uses, be convenient to batch production.
Accompanying drawing explanation
Fig. 1 is the front view structural representation of the utility model antenna.
Fig. 2 is the rearview structural representation of the utility model antenna.
Fig. 3 is emulation and the test result of the utility model antenna return loss.
Fig. 4-a and Fig. 4-b is respectively the antenna pattern of E face and the emulation of H face and measurement when 2.5GHz.
Fig. 5-a and Fig. 5-b is respectively the antenna pattern of E face and the emulation of H face and measurement when 6.5GHz.
Fig. 6-a and Fig. 6-b is respectively the antenna pattern of E face and the emulation of H face and measurement when 9.75GHz.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described, as shown in Figure 1.
Ultra-wideband antenna based on fractal structure of the present utility model, by dielectric-slab 3, is printed on dielectric-slab one side and goes up and the radiating element 2 be directly communicated with and feed element 4, and the ground unit 6 be printed on dielectric-slab another side is formed, wherein:
A. gap radiating element etched is made up of a circular gap being positioned at center and six symmetrical semicircle gaps, and such radiating element is actual fractal and formed through twice to a circular radiation unit;
B. ground unit 6 is trapezoidal metal patch, and the center etching of feather edge thereon has a rectangular slot 5.
This antenna uses FR-4 dielectric-slab, and its relative dielectric constant is 4.4, and dielectric loss angle tangent is 0.02, and adopt the microstrip line of gradually changeable to carry out feed, the radius R of initial circular radiation sheet is 10mm.Antenna size size of the present utility model is 40mm*30mm*1.6mm.
The utility model antenna increases the resonant frequency point of the frequency band of antenna by increasing iterations, constantly increase bandwidth.
The utility model antenna adopts microstrip line to carry out feed.As shown in Figure 3, under meeting return loss and being less than the condition of-10dB, realize four resonance frequencys of 2.7GHz, 4.8GHz, 7.9GHz, 9.4GHz, working band is 2.2GHz-10.2GHz to the return loss of emulation and test.Not only cover the 3.1GHz-10.2GHz in ultra wideband frequency, but also 2300MHz-2400MHz and the 2570MHz-2620MHz frequency range, the WLAN (2400MHz-2485MHz that cover in the 2300MHz-2400MHz frequency range in TD-SCDMA, the 2130MHz-2135MHz frequency range in WCDMA, LTE, and 5150MHz-5825MHz) multiple communication work frequency range, and good impedance matching can be realized.In addition, antenna of the present utility model has the structure of compact, can be integrated in UWB equipment easily.
Claims (1)
1. the ultra-wideband antenna based on fractal structure, it is characterized in that this ultra-wideband antenna based on fractal structure is by dielectric-slab (3), be printed on dielectric-slab one side to go up and the radiating element (2) be directly communicated with and feed element (4), and the ground unit (6) be printed on dielectric-slab another side is formed, wherein:
A. gap radiating element etched is made up of a circular gap being positioned at center and six symmetrical semicircle gaps, and such radiating element is actual fractal and formed through twice to a circular radiation unit;
B. ground unit (6) is trapezoidal metal patch, and the center etching of feather edge thereon has a rectangular slot (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633489.1U CN204696234U (en) | 2014-07-04 | 2014-10-28 | A kind of ultra-wideband antenna based on fractal structure |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420372801 | 2014-07-04 | ||
| CN2014203728016 | 2014-07-04 | ||
| CN201420633489.1U CN204696234U (en) | 2014-07-04 | 2014-10-28 | A kind of ultra-wideband antenna based on fractal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204696234U true CN204696234U (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420633489.1U Expired - Fee Related CN204696234U (en) | 2014-07-04 | 2014-10-28 | A kind of ultra-wideband antenna based on fractal structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896070B (en) * | 2016-04-26 | 2019-03-12 | 郑州轻工业学院 | Divide the ultra-wideband microstrip antenna of shape based on rectangular step structure |
| CN109728430A (en) * | 2019-01-15 | 2019-05-07 | 中国计量大学 | Two-band wearable antenna |
| CN110880643A (en) * | 2019-12-06 | 2020-03-13 | 长安大学 | 24 GHz's car anticollision radar antenna |
-
2014
- 2014-10-28 CN CN201420633489.1U patent/CN204696234U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896070B (en) * | 2016-04-26 | 2019-03-12 | 郑州轻工业学院 | Divide the ultra-wideband microstrip antenna of shape based on rectangular step structure |
| CN109728430A (en) * | 2019-01-15 | 2019-05-07 | 中国计量大学 | Two-band wearable antenna |
| CN109728430B (en) * | 2019-01-15 | 2020-12-08 | 中国计量大学 | Dual-band wearable antenna |
| CN110880643A (en) * | 2019-12-06 | 2020-03-13 | 长安大学 | 24 GHz's car anticollision radar antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |