Design of Compact H-Shape Microstrip Filter for Multiband Application

Microstrip Filters is an important part in many microwave or RF applications. Rising applications like wireless communications persist to challenge microwave or RF filters with increasingly further rigorous requirements. The latest development in new materials and fabrication technologies such as monolithic microwave integrated circuits (MMIC) and micromachining technology, have stimulated the rapid development of new microstrip filters for microwave and RF applications. The manuscript presented here is a novel H- Shape microstrip filter for multi-band applications. We represent five microstrip filters each having H ¿Shape but the substrate material is changed in each design. On the basis of proposed design we investigate the effect of different material on Insertion loss, reflection coefficient, VSWR and Q factor. In this paper we chose two range of material one with lower dielectric constant and other range with higher dielectric constant like FR4, Gallium Arsenide, Rogers RO3010, RT Duroid 5880 and Rogers TMM 10i. The proposed microstrip filters are developed on different substrates of thickness 1.6 mm and investigated on the frequency range of 2 GHz to 8 GHz.