COMSOL simulations of DCSRR with band-pass and band-stop characteristics

In this paper, a demonstration of a standard pair of complementary split ring resonators (CSRR) can be enhanced by the addition of another pair of rings. These additional pairs allow for greater enhancement of the standard CSRRs ability to mitigate unwanted frequencies, and enhance desired frequencies. Various ring orientations and geometries are crafted and simulated in COMSOL. At 2.4 GHz, the band-pass CSRR achieved a return loss of 44.015 dB while the band-stop achieved a S21 measurement of -56.8 dB. In addition, the band-pass CSRR shows the attenuation of frequencies that surround the 2.4 GHz frequency. The presented results show possible enhancement or blocking of frequencies used for S-band RFID applications.