Abstract

Hussein H. Ghouz
Novel Microstrip Filter Structures Using Reconfigurable Defective Digital Ground Plane
In this study, a new compact microstrip bandpass filter having an adjustable characteristic (bandwidth, ion loss, &#97 &#110 &#100 return loss) has been proposed &#97 &#110 &#100 presented. The proposed filter has been analyzed, investigated &#97 &#110 &#100 optimized using the microwave CST_Studio simulator for different reconfigurable defective digital ground structures (DDGS). The presented bandpass filter is mounted on a standard lossy FR4-substrate. The filter patch has an adjustable center resonance frequency within the band from 3.0 GHz up to 6.0 GHz. Simulation results shows that using the proposed concept of DDGS, the filter operating band, ion loss, &#97 &#110 &#100 return loss can be tuned to the desired values. The presented study added a new, simple &#97 &#110 &#100 practical approach for microwave filter design