Ultrat compact triple band D-CRLH metamaterial antenna

This paper presents an ultra-compact triple band metamaterial antenna formed from only one cell of dual composite right left handed transmission line. The proposed configuration is simple as it does not need via connection. The antenna is operating at 1.57 GHz, 2.65 GHz and 3.7 GHz. The antenna size is only 18×26 mm². Compared to conventional microstrip patch antenna, the proposed antenna size is only 3%, 9%, and 15%. at the former frequencies, respectively. The design concepts, the electromagnetic full wave simulation validation and the experimental results are introduced. Very good agreements between the simulated and measured results.