Microwave Jerusalem cross absorber by metamaterial split ring resonator load to obtain polarization independence with triple band application

Abstract

Microwave Jerusalem cross (JC) absorbers are interesting for different researches such as medical imaging. The split ring resonators (SRRs) are suggested as the conventional metamaterial elements which are noticed in this paper. Loads are used for JC absorber for achieving dual and triple band characteristic at X-band and Ku-band application. We show that the JC absorber has a single resonance and the final model has triple resonance 8.6, 10.2, 11.95 GHz with absorption more than 84%. The results show that how the parasitic element can provide new capacitance and inductance to make new resonance and the current distribution revealed the new capacitance in the structures. The symmetrical arrangement of the absorber made polarization independence and also by loads. We have tried to save this quality and current distribution revealed that how the elements affected the current dispense on the metal particle and gaps. The prototype absorber is fabricated on FR-4 and simulation results are compared and confirmed with experimental.