Microwave absorbers are used to improve the communication system performance. They can be classified into non-resonant and resonant absorbers. In band-limited applications, where the size of the microwave absorber is required to be physically small or when the unwanted scatterers are located in the proximity of the antennas, the resonant absorbers can provide better solutions. Major design challenges of these absorbers are increasing the bandwidth, improving the parameters performances (i.e., reflection coefficient, isolation, noise suppression), and producing them with a lower cost and a...