Design of a Small and Compact Monopole Ultra Wideband Antenna

A small and compact microstrip-fed monopole antenna, which consists of a rectangular patch and a truncated ground plane, is presented for ultra wideband (UWB) application. The antenna occupies a compact size of 26mm×32mm ×0.762mm, including the feeding mechanism. Proposed antenna, which is printed on Rogers substrate with a relative permittivity of 2.2 has been easily fabricated and has low manufacturing cost. Measured results show good agreement with the simulated results and the proposed antenna has an impedance bandwidth of 3.8-14.8 GHz for a voltage standing-wave ratio less than 2. Furthermore, good radiation patterns indicate that the proposed antenna is well suited to be integrated within various portable devices for UWB application.