COMPARISON OF MICROSTRIP BAND PASS AND BAND REJECT FILTER DGS TECHNIQUE BASED IN GSM BAND (1850MHz)

Abstract

In microwave communication filters are more essential high frequency component. To improve the insertion loss
the DGS technique is used. DGS i.e, (defected ground structure) is a technique where cuts are drawn on ground to improve
the results and reduce the size of filters. Band passes and band reject filters are the filters which pass and reject the range of
frequency. A band pass and band reject filter is designed with GSM upper band center frequency i.e, 1850Mhz.with DGS
technique to improve the losses.DGS technique is a proposed version of hexagonal ring and hexagonal head. Performance of
filters has been compared in terms of insertion loss. The simulation is carried out with CST software 2010.