Dual-band monopole MIMO antennas for LTE mobile phones

In this paper, we present the design of a dual-band antenna for Long Term Evolution (LTE) handsets. The proposed antenna is composed of a meandered monopole operating in the 700 MHz band and a connected parasitic radiating in the 2.5-2.7 GHz band. Two antennas of the same kind are then closely positioned on the same 120×50 mm² Printed Circuit Board (PCB) which represents a modern PDA-mobile phone. To enhance their port-to-port isolation, a neutralization technique is implemented between the two antennas. Scattering parameters, radiations patterns and efficiencies are presented to prove the usefulness of the method.