Compact UWB ring sectoral monopole antenna with dual polarization

Abstract

A novel, compact and dual polarized ring Sectoral Monopole Antenna (RSMA) with defected ground is presented for Ultra Wide Band (UWB) applications. Present structure has been derived from the circular monopole antenna to accomplish dual polarization characteristics without much change in the impedance band width, radiation pattern (quasi Omni-directional) and other antenna characteristics. Proposed RSMA with partial and defected ground design, UWB response (i.e. 3.1 GHz-10.6 GHz) with reference to VSWR<;2 is achieved. The antenna is fabricated on a RT/Duroid5880 (εr =2.2) substrate having thickness of 0.785 mm with total real-estate of 20×28 mm2. Measurements are in close agreement with the simulated results. Dual polarization characteristics ensure that proposed antenna can be a promising candidate for the UWB applications.