Log-Periodic Dipole Antenna using Fractal Geometry for Digital TV Signal Reception 


Vol. 37,  No. 3, pp. 84-89, Mar.  2012


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  Abstract

In this paper, miniaturized log-periodic dipole antennas with fractal structure for Digital TV broadcasting in the 470~806 MHz band are investigated. The sizes of the fractal log-periodic dipole antennas that exploit Koch and Minkowski structures are reduced to 75% and 60% of the standard log-periodic antenna, respectively. Experimental results show that the 10-dB return loss bandwidths of the log-periodic Koch and Minkowski dipole antennas are 810 MHz and 670 MHz, respectively, which are wider than 670 MHz of the standard dipole. And the overall operating frequencies of the fractal antennas are increased by 40 MHz and 70 MHz, respectively. Within the entire operating frequency range, the measured antenna gains are 4.74 dBi~6.23 dBi for the Koch fractal and 3.52 dBi~7.44 dBi for the Minkowski fractal, which are slightly lower than 6.12 dBi~8.2 dBi for the standard log-periodic antenna.

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  Cite this article

[IEEE Style]

T. H. Yoo, T. Kim, C. Lee, J. Hong, "Log-Periodic Dipole Antenna using Fractal Geometry for Digital TV Signal Reception," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 3, pp. 84-89, 2012. DOI: .

[ACM Style]

Tae Hoon Yoo, Tae-Hyung Kim, Chang-Shin Lee, and Jang-Hee Hong. 2012. Log-Periodic Dipole Antenna using Fractal Geometry for Digital TV Signal Reception. The Journal of Korean Institute of Communications and Information Sciences, 37, 3, (2012), 84-89. DOI: .

[KICS Style]

Tae Hoon Yoo, Tae-Hyung Kim, Chang-Shin Lee, Jang-Hee Hong, "Log-Periodic Dipole Antenna using Fractal Geometry for Digital TV Signal Reception," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 3, pp. 84-89, 3. 2012.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880