A CPW Fed Monopole Antenna Loaded with Metamaterial Unit Cell for Wireless Application

An electrically small coplanar waveguide (CPW) fed monopole antenna uploaded with split ring structure is printed on $25 \times 25 \times 1.6 \mathrm{mm}^{3}$ FR-4 substrate. A prototype antenna has rectangular closed ring resonator along with stub which is connected to the monopole antenna. A -10dB impedance bandwidth of 260 MHz (2.22-2.48 GHz) at 2.4GHz and 2740 MHz (6.45-3.72 GHz) at 5GHz is covered by the radiating element. A CPW-fed offers better impedance matching and wide band characteristics due to quarter wave transformer. The split ring structure yields lower resonance at 2.4 GHz for ISM band while CPW -fed with monopole is responsible to cover upper resonance at 5GHz.Due to the prototype antenna noteworthy radiation properties, it may be used for wireless ISM/WLAN and C-band application.