Understanding and optimizing the behavior of artificial magnetic conductors require modeling them through analytical means, which can be challenging due to their complex structures. In this paper, a triple-band artificial magnetic conductor is presented, exhibiting an in-phase reflection of incident waves at 1.21 GHz, 1.61 GHz, and 2.46 GHz. The design is based on a triple square loop structure, where each frequency is controlled by one square loop. Additionally, an analytical model is proposed to predict the operating frequencies of the artificial magnetic conductor.