Multiband microstrip antenna with circular polarization for wireless communication

This paper presents a design of a low profile, multiband square Microstrip patch antenna with Circular Polarization (CP) for wireless communication applications. By simulation and fabrication, it is demonstrated that multiband operation with CP is achieved by incorporating various slots and corner truncation on the Microstrip patch. Microstrip feed is used to excite the square patch. Proposed antenna shows multiband characteristics at frequency bands of 2.51 GHz to 2.60 GHz, 4.66 GHz to 4.80 GHz and 5.15 GHz to 5.73 GHz with impedance bandwidths of 3.5%, 2.9% and 10.6% respectively. The antenna also produces circular polarization at frequency 5.2 GHz which focuses on the fact that proposed antenna finds its application in HIPERLAN/1 (5.15GHz to 5.35 GHz).