Abstract
We are interested in designing an antenna in the frequency band of 0.5 GHz to 2 GHz for Intentional Electromagnetic Interference (IEMI) detection application. We modify the conventional planar log-periodic dipole array (CPLPDA) antenna, and design a modified planar log-periodic dipole array (MPLPDA) antenna to achieve better gain over the desired frequency band. The gain improvement in MPLPDA antenna is done by increasing the length of the dipole which is loaded at low frequency. We provide the design of MPLDA antenna and obtain its performance through simulations using Ansys High Frequency Structure Simulator (HFSS) 2019 R3.7 electromagnetic simulation software. Using simulations, we show that MPLPDA antenna achieves an average gain of 4 ±0.5 dB. Also, compared to CPLPDA antenna, the MPLPDA antenna has a better gain performance at low frequencies by around 1.5 dB. The proposed MPLPDA antenna will revolutionise the safety of electronic systems from IEMI attacks.
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