Dual Band Slotted Microstrip P atch Antenna For Wireless Applications

Abstract

This paper describes dual-band patch antenna. The dual-band operation is obtained by embedding a pair of Lshaped slots. Dual band antenna can reduce the size of antenna 40%, comparing with rectangular microstrip antennas on normal dielectric substrate, and have wider bandwidths for both bands. In this paper L-shaped slots patch antenna with length L= 25.74 mm and width W = 31.20 mm fabricated based on availability of Rogers Duorid 5880 dielectric material and a prototype antenna is developed. The dielectric constant of Rogers Duorid 5880 material is  r  2.2 having thickness h = 0.16 mm and copper thickness is 35 microns using a coaxial feeding method for dual band operation. The prototype antenna is operating in S band frequency range.