CN203260724U - Square spiral ultra-wideband antenna with circular groove - Google Patents
Square spiral ultra-wideband antenna with circular groove Download PDFInfo
- Publication number
- CN203260724U CN203260724U CN 201220688246 CN201220688246U CN203260724U CN 203260724 U CN203260724 U CN 203260724U CN 201220688246 CN201220688246 CN 201220688246 CN 201220688246 U CN201220688246 U CN 201220688246U CN 203260724 U CN203260724 U CN 203260724U
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- spiral
- wideband antenna
- wideband
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Abstract
The utility model discloses a square spiral ultra-wideband antenna with circular grooves. The ultra-wideband antenna comprises a radiating element, a coplanar waveguide, a dielectric plate, circular grooves, and feed ports. The radiating element and the coplanar waveguide are disposed on a same surface of the dielectric plate. The radiating element is connected with an end of the coplanar waveguide, and the other end of the coplanar waveguide is connected with the feed ports. The radiating element is divided into two radiation units in a square spiral structure. The ultra-wideband antenna is used in an ultra-wideband communication system, and the antenna is small in size and is easy to integrate in a printed circuit board. The ultra-wideband antenna is distributed uniformly in almost 360 DEG range in a whole ultra-wideband frequency domain.
Description
Technical field:
The utility model relates to a kind of antenna of wireless communication technology field, specifically a kind of ultra wideband fractal antenna of coplanar wave guide feedback.
Background technology:
Along with the develop rapidly of modern information technologies, super-broadband tech is used more and more in various fields such as electronic countermeasures, radar, sonar, geological prospectings.Ultra broadband has solved the great difficult problem of for many years relevant propagation aspect of puzzlement conventional wireless techniques, the advantage such as have that antijamming capability is strong, transmission rate is high, ultra wide bandwidth, consumption electric energy are few, good confidentiality, transmitted power are little.Ultra-wideband antenna is one of key technology of ultra broadband.Common broad-band antenna is because frequency dispersion and spatial dispersion can not send ultrashort pulse usually, and radio ultra wide band system needs special antenna to send or receive the ultrashort pulse of nanosecond rise time.
The utility model discloses a kind of ultra-wideband antenna with co-planar waveguide excitation line, this antenna can be realized ultra wideband.
The utility model will be introduced antenna fluting technology.
The utility model content:
[0004] in order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of ultra wideband fractal antenna of coplanar wave guide feedback.The omnidirectional radiation characteristic of the utility model antenna is better, compact conformation, volume is little, and is easy to be integrated in the printed circuit board, and in whole ultra wide band frequency territory distribution uniform in the 360 degree scopes almost.
The technical scheme that the utility model adopts is:
A kind of improved side's spiral ultra-wideband antenna, it is characterized in that: comprise a medium substrate medium substrate above, be printed with radiating element and feed element above the medium substrate, radiant element (3) links to each other with an end of co-planar waveguide (2), and the other end of co-planar waveguide (2) links to each other with feed port (4).
Described ultra-wideband antenna is characterized in that: antenna has double-spiral structure, and the number of turns of spiral is two circles half, and radius of turn is dwindled gradually, and two helical structures have identical size and shape, but also asymmetric, because of the length difference of its feed groove.
Described ultra-wideband antenna is characterized in that: be parallel to spiral groove end in the inside of square spiral and add one and wait elongated slot.
Described ultra-wideband antenna is characterized in that: described radiating element is the chip unit of both sides' spiral.
Described ultra-wideband antenna is characterized in that: the width of square helical antenna is identical all the time.
Described ultra-wideband antenna is characterized in that: the spiral center at square spiral has circular recess.
Described ultra-wideband antenna is characterized in that: coplanar wave guide feedback, and radiating element feed microstrip line links to each other.
The utility model at first is transferred to co-planar waveguide by feed port with the TEM ripple, in order to be complementary with general transmission line impedance, co-planar waveguide is set to 50 Ω impedances, and co-planar waveguide is connected with radiant element, with transmission of electromagnetic energy to radiant element, by the outside emittance of radiant element.
The utility model is compared with prior art, and its effect is actively with obvious.The utility model is because at radiative unit structure employing side helical structure, and antenna can obtain similar Surface current distribution and have multi-band property for different frequencies, utilizes this characteristic to realize the performance of ultra-wideband antenna.Adopt coplanar wave guide feedback, the bandwidth that antenna not only can be realized and directional diagram, and be integrated in the printed circuit board easily.Therefore, the utlity model has compact conformation, volume is little, and is easy to be integrated in the printed circuit board, has simultaneously the advantage of better omnidirectional radiation characteristic.The utility model meets the FCC specified standard, can be used for ultra-wideband communication system.
Description of drawings:
Fig. 1 is the Facad structure schematic diagram of ultra broadband side's helical antenna of a kind of coplanar wave guide feedback of the utility model;
Fig. 2 is the end view of the ultra wideband fractal antenna of a kind of coplanar wave guide feedback of the utility model;
Embodiment:
As shown in Figure 1 and Figure 2, the utility model comprises: dielectric plate 1, co-planar waveguide 2, radiant element 3 and feed port 4, radiant element 3 and co-planar waveguide 2 are positioned at the same surface of dielectric plate 1, and an end of radiant element 3 and co-planar waveguide 2 links to each other, and the other end of co-planar waveguide 2 links to each other with feed port 4.
Radiant element 3 by both party helical antenna consists of, and the side's of employing helical structure is realized the antenna ultra wideband.Described radiant element 3 is divided into two square helical antennas.
Described radiant element has double-spiral structure, and the number of turns of spiral is two circles half, and radius of turn is dwindled gradually.Two helical structures have identical size and shape, but also asymmetric, because of the length difference of its feed groove.
A circular recess is driven at the spiral center of described radiant element.
Because this antenna size and thickness are all less, be integrated in the printed circuit board easily.In addition, because this antenna structure is simple and easily production, so the cost of this antenna is lower.
Claims (6)
1. opened round groove ultra-wideband antenna in the square spiral, it is characterized in that: comprise a medium substrate medium substrate above, be printed with radiating element and feed element above the medium substrate, radiant element (3) links to each other with an end of co-planar waveguide (2), and the other end of co-planar waveguide (2) links to each other with feed port (4).
2. opened round groove ultra-wideband antenna in a kind of side's spiral according to claim 1, it is characterized in that: antenna has double-spiral structure, the number of turns of spiral is two circles half, radius of turn is dwindled gradually, two helical structures have identical size and shape, but also asymmetric, because of the length difference of its feed groove.
3. opened round groove ultra-wideband antenna in a kind of side's spiral according to claim 1, it is characterized in that: the width of square helical antenna is identical all the time.
4. opened round groove ultra-wideband antenna in a kind of side's spiral according to claim 1 is characterized in that: the inside at square spiral adds a circular recess.
5. opened round groove ultra-wideband antenna in a kind of side's spiral according to claim 1, it is characterized in that: described radiating element is the chip unit of both sides' spiral.
6. opened round groove ultra-wideband antenna according to claim 1 or in 3 described a kind of side's spirals is characterized in that: coplanar wave guide feedback, and radiating element feed microstrip line links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688246 CN203260724U (en) | 2012-12-13 | 2012-12-13 | Square spiral ultra-wideband antenna with circular groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688246 CN203260724U (en) | 2012-12-13 | 2012-12-13 | Square spiral ultra-wideband antenna with circular groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203260724U true CN203260724U (en) | 2013-10-30 |
Family
ID=49473264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220688246 Expired - Fee Related CN203260724U (en) | 2012-12-13 | 2012-12-13 | Square spiral ultra-wideband antenna with circular groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203260724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051827A (en) * | 2014-06-24 | 2014-09-17 | 中国科学院微电子研究所 | Broadband band-pass filter based on spiral defected ground |
-
2012
- 2012-12-13 CN CN 201220688246 patent/CN203260724U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051827A (en) * | 2014-06-24 | 2014-09-17 | 中国科学院微电子研究所 | Broadband band-pass filter based on spiral defected ground |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20131213 |