A simple miniaturized wideband equilateral triangular microstrip patch antenna

A simple, very small equilateral triangular microstrip patch antenna (ETMPA) having sides 15mm with an I-slot of optimum length and position on the radiating patch has been designed to generate a wide frequency band. Impedance bandwidth generated by the antenna is 610MHz 10.8%, (5.34-5.95GHz) for (S11 ≤ -10 dB) having broadside radiation pattern with peak gain of 1.66dB. The designed antenna covers Weather Radar application band(5.35-5.45)GHz, Radiolocation and Military application band (5.47-5.57) GHz, Maritime Radar application band (5.57-5.65)GHz, WLAN-Europe(5.470-5.725)GHz, Wi-Fi 5.8(5.725- 5.850)GHz and Dedicated Short-Range Communications(DSRC) band (5.850-5.925)GHz. FR4 material having relative permittivity(εr) 4.4 and loss tangent(tanδ) 0.02 has been used as dielectric substrate and thin copper sheet used as radiating patch and ground in the designed antenna. Prior to physical fabrication and measurement, the proposed antenna has been designed and analyzed using commercial High Frequency Structural Simulator (HFSS) ver13 software. Good matching has been observed between measured and simulated results.