A New design of a microstrip antenna with modified ground for DCS and WiMAX applications

Abstract

This paper presents a novel design of a pentagonal-shaped planar dual-band monopole antenna with a modified ground structure. The validated antenna is compact with a size of 57x50x1,6 mm cube. It is printed on an FR-4 substrate and fed by a 50 Ohm microstrip line. The final circuit operates in the DCS frequency band at 1.8 GHz and the WiMAX at 3.5 GHz. To achieve such antenna, we have used different optimization methods integrated in CST Microwave Studio. The obtained results are compared with another electromagnetic solver Ansoft’s HFSS. After the realization, we have tested and validated this antenna. The measurement results present an agreement with the numerical results.