“…Despite the many advantages of MMAs, this type of microwave absorber has a narrow absorption bandwidth, which is mainly related to the strong magnetic and electric resonances (Sood and Tripathi, 2015;Cheng et al, 2017a;Xin et al, 2017). To solve this issue, researchers have designed dual, multi, and broadband MMAs with high absorbing performance (Hu et al, 2016;Lian et al, 2016;Rufangura and Sabah, 2016;Wang, 2016). Some researchers have proposed enhancing the bandwidth by employing multi-resonance units with diverse geometric dimensions (Li et al, 2011;Ghosh et al, 2013;Park et al, 2013;Viet et al, 2014).…”