A novel approach of Microstrip Antenna for Dual Band operations

The microstrip patch is one of the most preferred antenna structures for low cost and compact design for wireless system and RF application. Dual-Band antennas are of a relative interest since they can support multiple communication systems. In this paper we present design of a novel compact small size microstrip antenna suitable for dual-band operations. By loading properly arranged slots on a rectangular microstrip patch, dual frequency and broadband operations of a single feed rectangular patch is achieved. Dual frequency operation is achieved by loading two pair of narrow slots in rectangular patch, parallel to the non radiating edge and better impedance bandwidth is achieved by using two dielectric materials Rohacell RO3003 in combination with foam. The impedance bandwidth of 130MHz and 1.45GHz band is obtained in the proposed design.