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A planar multiband Koch snowflake fractal antenna for cognitive radio

Published online by Cambridge University Press:  04 September 2015

S. Sivasundarapandian Open the ORCID record for S. Sivasundarapandian [Opens in a new window]  and
C.D. Suriyakala
S. Sivasundarapandian*
Affiliation:
Department of Electronics and Telecommunication Engineering, Sathyabama University, Chennai, India. Phone: +919382712928
C.D. Suriyakala
Affiliation:
Department of Electronics and Telecommunication Engineering, Sathyabama University, Chennai, India. Phone: +919382712928 Sree Narayana Gurukulam College of Engineering, Kerala, India
*
Corresponding author: S. Sivasundarapandian Email: [email protected]
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Abstract

This paper of lettering reveals about a modified Koch snowflake fractal multiband antenna for cognitive radio applications. Multiband antennas can be employed for spectrum sensing in cognitive radio. This new microstrip-modified Koch fractal antenna exhibits multiple actions in four dissimilar resonant frequencies at 3.2, 5.2, 6, and 9.5 GHz correspondingly that covers the frequency bands such as S, C, and X bands. Its multiband behavior was analyzed by designing and simulating in ADS EMDS software. Three iterations were carried out to study the performance of modified Koch snowflake fractal antenna. The outer ring and a small rectangular slot in the center of the antenna are used for 50 Ω impedance matching and to increase the number of resonant frequencies. The fractal antenna parameters such as gain, directivity, and its radiation pattern are also analyzed in this paper. The measured results show good agreement with the simulated results.

Keywords

Multiband antennaKoch snow flake antennaFractal antennaAntennas for cognitive radio
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 2 , March 2017 , pp. 335 - 339
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

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