Design of double sided metamaterial antenna for mobile handset applications

Composite Right Left Hand (CRLH) based Printed and dual band antenna which is suitable to mobile handset is proposed and investigated in this paper. The proposed antenna is exhibits Composite right left handed nature with help of transmission lines on the printed circuit board (PCB) substrate which has epsilon value for RT Duriod 5880 LZ (epsilon is 2.2). Designed antenna is structure based on composite right/left handed (CRLH) metamaterial transmission lines. To facilitate broader frequency resonance, the antenna consists of two discrete unit cells. Through these two SRR like unit cells, this antenna can have a broad bandwidth which is from 1700 MHz to 1850 MHz, and higher efficiencies of each frequency range are observed. With the introduction of slot in the radiating patch, which could offer better reception signal and radiation characteristics. Return loss, radiated power, radiation patterns, and current distribution are provided in this paper. Proposed antenna occupies is 40×14 mm² out of the total PCB size of 40×60 mm² with 0.762 mm thickness. This antenna covers a variety of commercial frequency bands which fall on DCS, USPCS and part of WIBRO. In this work, an electrically small tunable antenna structure is designed, simulated, which achieves good tunability and size reduction compared with a conventional (Double Negative antennas).