Compact microstrip antennas using CSRR structure ground plane

In this article, a method for simultaneously enhancing the gain and reducing the size of microstrip antennas using a spiral complementary openings resonance ring (CSRR) structure ground plane has been presented. The proposed antenna is successfully designed and measured, which provides frequency band from 5.145∼5.387 GHz. By adjusting the size of the spiral CSRR on the ground plane, small size antenna of 25 × 25 × 0.8 mm3 and 5.8 dBi of relative high gain are achieved. Comparing the simulated and measured results confirm the suitability of the proposed antenna for wireless local area network application. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:117–120, 2014