Wideband planar slotted radiating ground plane antenna for portable devices

This work was supported by Finnish Funding Agency for Technology and Innovation, Nokia Devices Oulu, Pulse Finland, and Spanish Ministerio de Ciencia y Tecnologia under project TEC2007-66698-C04-03/TCM. M. Sonkki thanks Universidad Politecnica de Valencia and COST IC0603 ASSIST for financially supporting his research exchange in Valencia.