Dual-band Micro-Strip Antenna using Split Ring Resonators for ISM Bands

The new generation of communication devices integrated more than one standard into a single system. When the frequency band of the antenna increases, it leads to an increase in antenna complexity. The primary purpose of this dual-band antenna is to achieve a smaller size, enhanced bandwidth and good gain. Initially, the general design equations and parameters are used to design the conventional patch antenna for 2.4 GHz; further, simple modifications (i.e. using slots and split rings) are included in the patch as well as ground to operate the antenna in dual-band mode. ANSYS High-Frequency Structure Simulator software (HFSS) is used to design and assess the proposed antenna for performance evaluation. The Return Loss of the suggested pattern at 2.45 GHz is −22.0729 dB and at 5.8 GHz is −27.4999 dB, whereas VSWR values are 1.17 and 1.08. The maximum gain at the 5.8 GHz band and 2.45 GHz band is found to be 6.511 dB and 3.219 dB, which is good for superior WLAN coverage and other IS M band applications.