Design and Analysis of New Compact Uwb Frequency Selective Surface and Its Equivalent Circuit

A compact, low proflle, dual polarized, ultra wideband, frequency selective surface is proposed. It is designed by using two similar metallic array structures separated by dielectric material FR4. The simulated re∞ection bandwidth (with transmission < i20dB) for TE incident wave is 8GHz from 2.87GHz to 10.87GHz corresponds to 116%. The unit cell dimension and periodicity are of the order of 0:37‚ at the centre frequency. The overall thickness of the proposed FSS is 1.8mm. The proposed FSS has higher order of band-stop response and good angular stability. The measured transmission response of FSS is very close to simulated response. Design expressions for the resonance frequencies are proposed, and the calculated results are found to be in good agreement with the simulated ones. Finally, a parametric analysis of the proposed FSS is presented.