Design and Implementation of Frequency Reconfigurable Antenna for Wi-Fi Applications

K.Thenkumari

K.Sakthidasan SankaranEmail

J. M. Mathana

Deparmtent of Electronics and Communication Engineering, Hindustan Institute of Technology and Science, Chennai, India

Abstract

Due to exponential growth of wireless technology, the essentiality of the antennas which resonate at multiple frequency bands has increased. Reconfigurable antennas are the best choice to meet these demands. This work proposes the novel design and investigation of planar compact monopole frequency reconfigurable antenna. By employing FR4 substrate at 0.16 cm height, the designed antenna produces multiple frequency bands with wider bandwidth. The proposed antenna resonates in one dual-band mode and three single-band modes reckoning upon the conditions of RF PIN diode switches. Various antenna parameters like gain, radiation pattern, voltage standing wave ratio (VSWR), and return loss are simulated and validated with the measurement results. The fabricated antenna operates between 2.4 GHz- 6.3 GHz frequency range. In all the operating bands, VSWR is <1.5. The designed antenna structure gives radiation efficiency in the range of 73%-79% in all the operating resonating conditions. The designed monopole reconfigurable antenna exhibits the fair agreement between simulated and measurement results. It operates at 2.4 GHz (WIFI), 3.5 GHz (sub 6 GHz for 5G applications), 4.7 GHz (Vo5G), 5.8 GHz (V2x communications) and C band (6.22 GHz-6.27 GHz). Antenna design simulation is done with HFSSV17 software. This compact design antenna (35 mm*35 mm*1.6 mm) can be easily placed inside the modern portable communication devices.

Design and Implementation of Frequency Reconfigurable Antenna for Wi-Fi Applications