FR4 substrate for the applications operating in the Gigahertz frequencies. The antenna has
a substrate material with a dielectric constant of 4.4. The conducting copper is printed on the
FR4 substrate acting as the radiating element and ground. The antenna radiating element
has a defected circular structure with a cross stub. The proposed structure is operating at
2.64 GHz, 4.87 GHz, 7.86 GHz, 10.74 GHz, and 13.67 GHz. The antenna is simulated using …