A New Triple Band Microstrip Fractal Antenna for C-band and S-band Applications

Laercio Martins Mendonca, Edwin Luisi Barreto


Recently studies show that some parameters such as the shapes of antenna patch and the ground plane when geometrically altered, producing changes in the current density distribution of the planar structure and therefore the radiation characteristics. This paper presented a new microstrip fractal antenna that use the technique of inserting slots of shape fractal in ground plane in order to increase the bandwidth and insertion discontinuities in the feed line to reach specific behaviors in three band frequency applications. The FR-4 substrate with dimensions 85.0 x 85.0 x 1.57 mm³ was used. Also, it used different modes of impedance matching in feed line of antenna with changes of the width of the transmission line in order to obtain a variation in the current distribution and consequently the response by impedance bandwidth for S11 ≤ -10dB for standard C-band in receive frequency (3.625 GHz 4.2 GHz) and S-band (2.0 GHz 4.0 GHz).  Good agreement between measured and simulated results is achieved. Proposed fractal microstrip antenna can be easily designed, built and applied in wireless communication.


Line discontinuity, fractal antenna, slots ground, wireless communication.

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M.R. da Silva; C.L. NoÌbrega; P.H. da Fonseca Silva; A.G D'Assunção, "A new configuration of planar monopole quasi-fractal antenna for wireless communications,`` in Electromagnetic Field Computation (CEFC), 14th Biennial IEEE Conference on , vol., no., pp.1-1, 9-12 May 2010.

D.D. Krishna; M. Gopikrishna; C.K. Aanandan; P. Mohanan; K. Vasudevan, "Compact wideband Koch fractal printed slot antenna``, Microwaves, Antennas & Propagation, IET , vol.3, no.5, pp.782,789, August 2009.

K. Cheng-Hsueh; Meng-Ju Chiang; Jia-Yi Sze, "Miniaturized Planar Annular Slot Antenna Design Utilizing Shorting Conducting Strip``, in Antennas and Wireless Propagation Letters, IEEE , vol.8, no., pp.1360-1363, 2009.

M.K. Taher al-nuaimi, "Design of new miniaturized fractal microstrip line fed printed slot antenna``, Internet Communications (BCFIC Riga), 2011 Baltic Congress on Future, vol., no., pp.148, 152, 16-18 Feb. 2011.

Ya Wei Shi, Ling Xiong, and Meng Gang Chen, "Compact Triple-Band Monopole Antenna for WLAN/WiMAX-Band USB Dongle Applications``, ETRI Journal, vol. 37, no. 1, Feb. 2015, pp. 21-25.

S. Verma; P. Kumar, "Printed Multiband Minkowisk Fractal Curved Antenna," in Communications (NCC), 2014 Twentieth National Conference on , vol., no., pp.1-5, Feb. 28 2014-March 2 2014.

Kahrizi, Masoud, Tapan K. Sarkar, and Zoran A. Maricevic. "Analysis of a wide radiating slot in the ground plane of a microstrip line." Microwave Theory and Techniques, IEEE Transactions on 41.1 (1993): 29-37.

Yoshimura, Yoshikazu. "A microstripline slot antenna (short papers)."Microwave Theory and Techniques, IEEE Transactions on 20.11 (1972): 760-762.

Wei Hu; Ying-Zeng Yin; Peng Fei; Xi Yang, "Compact Triband Square-Slot Antenna With Symmetrical L-Strips for WLAN/WiMAX Applications," in Antennas and Wireless Propagation Letters, IEEE , vol.10, no., pp.462-465, 2011.

S. C. Basaran; K. Sertel. "Compact and Planar Monopole Antenna for WLAN and WiMAX Applications." Applied Computational Electromagnetics Society Journal 30.5 2015.

DOI: http://dx.doi.org/10.1590/2179-10742016v15i3543


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