Electrical Size Reduction of Microstrip Antennas by Using Defected Ground Structures Composed of Complementary Split Ring Resonator

In this study the effects of using defected ground structures (DGS) composed a complementary split ring resonator (CSRR) and CSRR with dumbbell (CSRR-D) for rectangular microstrip antennas are investigated. On aim, two different antennas, which Antenna B having etched DGS C CSRR-D designed fabricated in comparison ordinary patch antenna, is A. both Antennas C, same position planes. other hand, another called D, at resonance frequency C. For characterization; frequencies, voltage standing wave ratios, percentage bandwidths, gains, ka values gain radiation patterns investigated simulations experiments. The numerical analyses show that 29.39% 44.49% electrical size reduction (ESR) ratios obtained respectively to experimental results verify ESR 29.15% 44.94%. Supporting, promises 68.12% physical (PSR) as it compared D. These reveal good alternative based electrically small antennas.