Compact Multi-Band Circularly Polarized CPW Fed Antenna Based on Metamaterial Resonator

In this letter, a compact size multiband metamaterial based antenna with circular polarization property is presented. A metamaterial unit cell consist of four thin strips that constitute the modified square split ring resonator (MSSRR) which each of strips generate negative refraction index in antenna’s resonant frequency modes. The proposed antenna operate at Bluetooth (2400–2484 MHz specified by IEEE 802.11b/g), WiMAX (3.3–3.6 GHz specified by IEEE 802.16) and C-band (4–8 GHz) while circular polarization feature is obtained at these operational bands. The total size of antenna is 20 × 20 × 1.5 mm3 and realized on FR4-epoxy substrate. The design concept was confirmed by fabrication of the antenna scheme and measuring its characteristics. The extracted results show the antenna exhibits good agreement with simulation ones.

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