A Novel Recessed Microstrip Pin-Hole Conductor Fed Patch Antenna

A novel recessed microstrip pin-hole conductor fed patch antenna is presented in this paper. The antenna is designed with a rectangular copper conducting plane over which the dielectric substrate and the conducting patch antenna are fabricated. A 50 Ω microstrip line, recessed from the edge to the centre of the patch, feeds the antenna. A thin conductor (pin-hole conductor) from the feed line's edge enters into the substrate through a small slot known as a pin-hole created at the antenna's conducting plane and is connected to the positive terminal of the SMA connector. Based on the simulation results, the antenna is fabricated with 30 mm × 25 mm (patch) and 60 mm × 50 mm (RTDUROID 5880 substrate) dimensions, for the frequencies ranging from 2.5 to 5.5 GHz. The operation theory and parametric analysis of this antenna are presented with a prototype being measured. The measured high gain of 9.8 dBi and the compact design suit the antenna to be applied for WLAN and WiMAX applications.