Monopole antenna array for femtocell LTE

In this paper, a four element coplanar waveguide fed monopole antenna which is arrayed as volume array antenna to obtain omnidirectional pattern is presented. This femtocell antenna is designed to work at frequency 2.3-2.5 GHz for VSWR <2 and have at least 100 MHz impedance bandwidth. This array antenna has low mutual coupling, 460 MHz bandwidth at frequency 2.05-2.51 GHz and gain 6.3 dBi.