COMPACT LOG PERIODIC DIPOLE ARRAY ANTENNA FOR MULTIBAND APPLICATIONS USING S-FRACTAL CURVE

CH Murali Krishna, P James Vijay, M Ravi

Abstract: Log periodic dipole array antennas are introduced for the development of broadband applications. In this paper, a low return loss S-shape fractal implemented on the printed log periodic dipole antenna is presented. This proposed design consists of log periodic slots in the ground plane and their self-complimentary structure is on the micro strip layer. This design offers multiband operation with fair values of return loss, VSWR, gain and impedance bandwidth in the entire range of frequency operation. The proposed Sshape LPDA design resonates at 2.54GHz, 2.90GHz, 3.70GHz, 4.28GHz, 4.98GHz, 5.52GHz, 6.42GHz 7.48GHz, 8.12GHz, 8.82GHz and 9.40GHz for WiFi, WiMAX, WLAN, S-,C- and X-band applications with broad bandwidth.

Keywords: Fractal Structure, Log Periodic Dipole Array, Multiband, Broad Bandwidth, Radiation Efficiency

DOI: https://doi.org/10.15623/ijret.2018.0706010