A double meander PIFA with a parasitic metal box for wideband 4G mobile phones

A novel double meander PIFA with a parasitic metal box is proposed which can operate from 698 MHz to 960 MHz and is suitable for multimedia and voice communication in 4G mobile phones. A metal box in the vicinity of the PIFA is placed to improve the bandwidth and shift the operating frequency band lower. The antenna has good radiation pattern coverage over the whole frequency band and the cross polarization level is below -15 dB.