Fractal Based Switchable Multiband Antenna for 5G Applications

A switchable multi-band microstrip antenna operating in the microwave frequency band is presented in this paper. In the proposed antenna, three switches have been incorporated with the modified seirpinski fractal structure. Lumped element model of PIN diode is used as switch. The switches have designed with lumped elements, switching characteristics of the switch is realized by choosing proper resistance value in the RLC network. Various multiband resonance has been realized by changing the ON/OFF states of each switch. The proposed antenna covers fifteen bands such as 2.42GHz, 3.74GHz, 4.73GHz, 4.13GHz, 5.44GHz, 6.03GHz, 7.37GHz, 8.43GHz, 8.35GHz, 1.20GHz, 3.02GHz, 5.71GHz, 6.45GHz, 9.17GHz and 9.97GHz with sufficient S11(dB) value. The proposed antenna structure is modeled in Computer Simulation Technology microwave studio (CST MWS) and the simulated results are presented in this paper. Due to its multi-band resonance, the proposed antenna can be used in advanced handheld 5G devices, Futuristic smart devices, Internet of Things (IoT) enabled systems, etc.