A Planar Log Periodic Dipole Array Antenna for IEMI Detection

In this paper, we design an optimal antenna in the frequency band of 0.5 GHz to 2 GHz for Intentional Electro-magnetic Interference (IEMI) detection application. We design the Conventional Planar Log-Periodic Dipole Array (CPLPDA) antenna, and a compact Planar Log-Periodic Meander Dipole Array (PLPMDA) antenna using a Ring Resonator (RR) to achieve miniaturization in size. The gain improvement at low frequency is done by introducing the rectangular shape balun, meander shape dipole, and ring resonator. We design the CPLPDA antenna and PLPMDA antenna to obtain their performance through simulations using Ansys High-Frequency Structure Simulator (HFSS) 2019 R3.7 electromagnetic simulation software. Using simulations, we show that the PLPMDA antenna achieves an average gain of 4.3 dB. Also, compared to the CPLPDA antenna, the PLPMDA antenna achieves a 26.08% reduction in antenna width and provides better performance across the desired frequency band. The proposed PLPMDA antenna takes care of the safety of electronic systems from IEMI attacks.