The proposed paper has been based on the study of reduced ground microstrip patch antenna design with circular CSRR (Complementary Split Ring Resonator structure) ring structure on the patch, suitable for WLAN applications. The antenna is resonant at frequencies 2.542 GHz, 2.508 GHz, 2.462 GHz and 2.452 GHz. The impedance bandwidth of antenna for various bands is 246.49 MHz, 241.51 MHz, 220.16 MHz and 194.2 MHz, respectively. The antenna is suitable to be used for WLAN applications. This antenna has been designed and simulated using CST Microwave Studio (version 2013).