Results 191 to 200 of about 230,808 (236)
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A novel multiband antenna: fractal antenna
International Conference on Communication Technology Proceedings, 2003. ICCT 2003., 2004Fractal-shaped antennas have already been proved to have some unique characteristics that are linked to the geometrical properties of the fractals. The purpose of this article is to introduce the concept of the fractal, review the progress in fractal antenna study and implementation, compare different types of fractal antenna elements and arrays and ...
null Tian Tiehong, null Zhou Zheng
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Design of wideband fractal antenna with combination of fractal geometries
2011 8th International Conference on Information, Communications & Signal Processing, 2011A new small size fractal antenna is proposed for the application in wide-band frequency range. It is designed with the combinations of two fractal geometries. The wideband mechanism is explored by investigating the behaviour of the current on the patch. The length and width of Koch and cantor fractal geometries are optimized to achieve a wide bandwidth.
Yogesh Kumar Choukiker, S. K. Behera
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2015 Conference on Microwave Techniques (COMITE), 2015
A Yagi antenna with three fractal Koch curve shaped elements is proposed in this paper. The antenna performances (radiation pattern, return loss and gain) are simulated and compared with these of classical Yagi antenna for the same frequency band. Fractal Yagi antenna features relatively small size and high gain.
Peter Z. Petkov +2 more
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A Yagi antenna with three fractal Koch curve shaped elements is proposed in this paper. The antenna performances (radiation pattern, return loss and gain) are simulated and compared with these of classical Yagi antenna for the same frequency band. Fractal Yagi antenna features relatively small size and high gain.
Peter Z. Petkov +2 more
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Beauty of fractals design of fractal antennas
2007 6th International Conference on Antenna Theory and Techniques, 2007In this paper, beauty of fractals, some bases of its, processes, parameters and pictures of Mandelbrot and Julia sets are represented. Algorithms of computer-aided design of the dipole and planar fractal antennas of different orders are described.
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IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229), 2002
The use of fractal antenna techniques to reduce the size of a UHF linear dipole is investigated and discussed. Fractal designs are derived using an empirical method and a genetic algorithm based method. While both achieve size reduction, the latter design shows the most promise from a size reduction and design methodology standpoint, since simulation ...
S.D. Eason +5 more
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The use of fractal antenna techniques to reduce the size of a UHF linear dipole is investigated and discussed. Fractal designs are derived using an empirical method and a genetic algorithm based method. While both achieve size reduction, the latter design shows the most promise from a size reduction and design methodology standpoint, since simulation ...
S.D. Eason +5 more
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2016 11th International Conference on Industrial and Information Systems (ICIIS), 2016
In this paper a comparison has been made between the existing fractal antennas with the proposed microstrip antenna. The proposed antenna is designed by using fractal technique and the antenna can be used for different wireless applications as per FCC standards such as WiMAX (3.3–3.7), point to point high speed wireless communication (5.92–8.5) and ...
Narinder Sharma +2 more
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In this paper a comparison has been made between the existing fractal antennas with the proposed microstrip antenna. The proposed antenna is designed by using fractal technique and the antenna can be used for different wireless applications as per FCC standards such as WiMAX (3.3–3.7), point to point high speed wireless communication (5.92–8.5) and ...
Narinder Sharma +2 more
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Journal of Communications Technology and Electronics, 2006
Results on the numerical analysis of the Sierpinski and Koch fractal antennas are presented. It is shown that self-similarity of fractal structures affects electromagnetic properties of antenna structures created on the basis of these fractals. It is demonstrated that the Sierpinski and Koch fractal antennas are multiband structures; therefore, these ...
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Results on the numerical analysis of the Sierpinski and Koch fractal antennas are presented. It is shown that self-similarity of fractal structures affects electromagnetic properties of antenna structures created on the basis of these fractals. It is demonstrated that the Sierpinski and Koch fractal antennas are multiband structures; therefore, these ...
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Multiband Fractal Antenna for Wireless Applications
2018 6th International Conference on Wireless Networks and Mobile Communications (WINCOM), 2018In this present paper a Microstrip circular patch antennas with right angled isosceles triangles (RIT) on the edge is designed. The presented antennas are multi and wide band, small in structure and easy in fabrication. The circular patch has been fractured by superimposing the right angled isosceles triangles on the edge, and in the ground.
Fatima Ez-Zaki +2 more
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Fractal Antenna with Maximum Capture Power
Proceedings of the 6th International Conference on Telecommunications and Remote Sensing, 2017The variety of fractal curve types opens up additional structural and electrodynamic possibilities in the design of antennas. The article describes experimental results of studying characteristics of different types of fractal antennas (fractal triangular Koch antenna, fractal square Koch antenna and anisotropic fractal antenna).
Zeynulla Zhanabaev +5 more
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DNA is a fractal antenna in electromagnetic fields
International Journal of Radiation Biology, 2011To review the responses of deoxyribonucleic acid (DNA) to electromagnetic fields (EMF) in different frequency ranges, and characterise the properties of DNA as an antenna.We examined published reports of increased stress protein levels and DNA strand breaks due to EMF interactions, both of which are indicative of DNA damage.
Martin, Blank, Reba, Goodman
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