Design and Analysis of Modified Split Ring Resonator Structured Multiband Antenna for WCDMA and WiMAX Applications

Abstract

A miniaturized slotted multiband antenna is presented. The antenna consists of a square Split Ring Resonator-shaped slot in the radiating patch. The split ring resonator structure-based antenna presents operational capability at 2.18, 2.56 and 3.52 GHz, respectively. The achieved return loss at the resonance frequencies are 21.38, 12.00 and 25.46 dB and the bandwidth of the proposed antenna are 2.51, 2.01 and 3.27% for respective frequencies. The standard low-loss cost-effective FR-4 laminates of 1.6 mm thickness substrate were used for the design. The proposed prototype antenna was fabricated and measured; the results show reliable agreement with the simulated results. The antenna possesses adequate gain values at all resonating frequencies. The reflection coefficient, radiation pattern and other antenna parameters are exhibiting quite satisfactory results, fulfilling the requirement for WCDMA and WiMAX applications.