A tunable LTE main antenna solution for metallic cover mobile phone

It has become a popular trend in using metallic housing for mobile phone. The metallic housing often posts a great challenge towards the design of internal antenna which is used commonly in mobile devices. As such, it has become a common practice that most will integrate the metallic housing as part of the antenna for the mobile phone. This paper presents an antenna solution for mobile phone with a metallic back cover. The antenna solution is for the Main Antenna operating at several frequency bands in the range of 700–960MHz, 1710–2170MHz, 2300–2400MHz as well as 2500–2690MHz, which cover the GSM850, GSM900, DCS1800, PCS1900, WCDMA2100, and various LTE Bands in the 4G cellular network. The antenna solution presented in this paper, demonstrates the use of tunable component, integrating with the metallic housing to provide flexible tuning to cover the various frequency spectrums in the 2G, 3G and 4G cellular network.