Tunable Design for LTE Mobile-Phones

Antenna volume has become a critical parameter in mobile phone antenna design, as broader bandwidths are required for high connectivity between users. Shrinking the antenna size affects its efficiency, if one does not sacrifice bandwidth. This paper proposes an architecture to address the need for small and wide-band antennas. The study focuses on the low-frequencies (700 MHz - 960 MHz) in order to address a tough scenario for small platforms. A tunable design of the front-end and the antennas of the mobile phone is proposed and investigated. Operation is achieved on all low-bands with an efficiency of -3 dB at 700 MHz.Antenna volume has become a critical parameterin mobile phone antenna design, as broader bandwidths arerequired for high connectivity between users. Shrinking theantenna size affects its efficiency, if one does not sacrificebandwidth. This paper proposes an architecture to address theneed for small and wide-band antennas. The study focuses onthe low-frequencies (700 MHz - 960 MHz) in order to addressa tough scenario for small platforms. A tunable design of thefront-end and the antennas of the mobile phone is proposedand investigated. Operation is achieved on all low-bands with anefficiency of -3 dB at 700 MHz