Multiband Printed Monopole Slot Antenna for Mobile Phone

We formed a new internal multiband mobile phone antenna by cutting two printed monopole slots of different lengths at the edge of the system ground plane of the mobile phone.It will generate one wide band centered at about 1850 and 2170 MHz to cover the PCS/UMTS bands.The antenna occupies a small area of 11.4×40 mm² only, hence it has a simple planar structure.We will be able get good radiation characteristics over the wide operating bands.