Enhancement of Rejection Characteristics of Filter using an Array of CSRR for Notching the ISM Band in UWB Antennas

Abstract

This proposed work uses Complementary Split Ring Resonator (CSRR) to filter out the frequency bands. It is evident that any planar antenna will radiate in its resonant frequency as well as other frequencies. Those harmonics need to be eliminated from the radiation characteristics to have effective radiation. This   filter is designed for 2.5GHz to remove those undesirable harmonics and hence a band elimination filter is approached using square and hexagonal ring configuration.