Design of Miniaturized Folded Dipole Integrated On-chip Antenna for 5.8GHz Application

In recent years, the transition from large to miniaturized devices has been increasing, and as a result, the demand for pertinent and footprint-size antennas has become necessary. In this study, a design of a miniaturized antenna on-chip resonating at 5.8GHz is proposed. A coplanar waveguide coupling technique was adopted, modelled on a five-layer structure. A slotted metal layer was introduced as an electromagnetic shield between the antenna element and the silicon substrate. The design was reduced to one-fourth of the original antenna size with a configuration of 4.1x4x0.508mm
³
. Thus, achieved a gain of 2.14 dBi, a radiation efficiency of 68.7% with a bandwidth of 0.65 GHz below a return loss of -23 dBi. Hence, the design is suitable for Wi-Fi, WLAN and WiMAX applications.