Design and Analysis of Multiband Self-complimentary Log Periodic Tripole Antenna (LPTA) for S and C-Band-Based Radar Applications

Abstract

In this paper, the self-complimentary concept has been applied to Log Periodic Tripole Antenna (LPTA) to achieve the multiband resonance for S-band and C-band-based wireless applications. The proposed LPTA is designed with triangular shape elements in an array structure. This proposed self-complementary LPTA design exhibit nine multiband resonant frequencies at 2.50 GHz, 2.98 GHz, 3.31 GHz, 3.82 GHz, 4.54 GHz, 5.32 GHz, 6.31 GHz, 7.60 GHz and 8.95 GHz with corresponding bandwidths of 140 MHz, 190 MHz, 140 MHz, 220 MHz, 430 MHz, 400 MHz, 470 MHz, 680 MHz and 820 MHz, respectively, with adequate return loss > 17 dB. The proposed self-complementary LPTA shows the acceptable gain from 0.5 to 4.30 dB for S-band (2–4 GHz) and C-band (4–8 GHz) for surveillance and weather radar systems-based applications.