A study of CSRR loaded microstrip antenna for multiband applications

This paper investigates the study of single and multiple complementary strip ring resonator (CSRR) loaded microstrip patch antennas (MPA´s). Three different designs with CSRR loaded MPA´s are examined and compared the obtain results with without CSRR patch. The miniaturization of MPA and multi band frequency resonance was observed with the increasing number of CSRR´s on patches of the designs. The design-1 is resonant at frequency 5.5GHz, the design-2 is resonant at frequency 5.27GHz, the design-3 is resonant at two frequencies 5.16 & 7.12GHz and the design-4 is resonant at four frequencies 4.65, 5.04, 5.84 & 7.85GHz respectively. The surface current distributions and radiation patterns of four designs are studied.