Tri-band cactus shaped printed monopole

This paper presents a printed multi-band monopole antenna for use in wireless systems. The antenna is designed to operate at 2.4 GHz, 3.6 GHz, and 5.6 GHz under the maximum return loss of 10 dB. CST Microwave Studio was used for the design process. Chemical etching was used in the fabrication process. The resulting frequency bands cover 2.13-2.48 GHz, 3.51-3.88 GHz, and 5.56-6.70 GHz.