Coupled-fed printed multi-arm monopole antenna for USB dongle application

A coupled-fed monopole antenna with a multi-arm structure for GSM900/GSM1800 / DCS / PCS / UMTS / LTE2300 for USB dongle is presented. The monopole is fed by 50-ohm mini coaxial cable line. The two arms are on the front side and a meandered arm extended from the front side by via is on the back side. The multi-arms are coupled by an inverted L strip connected to feed point. The arms resonance of the bands, including: GSM900 (0.89-0.96 GHz), GSM1800 (1.71-1.99 GHz), DCS (1.71-1.88 GHz), PCS (1.85-1.99 GHz), UMTS (1.92-2.17 GHz), LTE2300. The simulated and measured results are proposed and discussed in the paper.