Journal of Information Organization Yassine Jandi, Fatima Gharnati, Ahmed Oulad Said 7 3 2017 http://www.dline.info/jio/fulltext/v7n3/jiov7n3_3.pdf A novel design of Seven band loop antenna for the frequency range from 0.7Ghz to 6Ghz covering all Wireless systems, is described and simulated.the antenna is planar inverted F, optimized using Particle swarm optimization with nonuniforms chromosome matrix to locate the slot on the resonator part of the PIFA.The optimized antenna is simulated by both software Ansoft HFSS and computer simulation technology microwave studio CST). The simulation result shows that both software are in good agreement and the antenna provide a minimal gain of 3dBi and a maximal gain of 7dBi.