期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2012
卷号：3
期号：4
页码：666-670
语种：English
出版社：Ayushmaan Technologies
摘要：In this paper the design of square shape multiband dipole antenna using fractal geometry is described. The fractal antenna has been designed on substrate FR-4 having thickness h=1.4mm, = 4.4. Ansoft HFSS 13 software has been used to design and simulate the antenna using different iterations. The antenna exhibits multiband resonances due to the self similarity in its structure. It is observed that with increase in iterations there is an increase in number of resonance frequencies along with an improvement in return loss and VSWR. The experimental result indicates that in final iteration the resonance frequencies obtained are 2.75GH, 3.75 GHz, 4.75 GHz, 5.15 GHz and 6.15 GHz with VSWR 1.37, 1.25, 1.25, 1.13 and 1.14 respectively. The designed square fractal antenna is also compared with Sierpinski dipole antenna and it is observed that more resonance frequencies are obtained in case of square fractal dipole antenna with improved values of return loss and VSWR.
关键词：Fractal;Multiband Antenna;Dipole Antenna;Resonant Frequency
