A Novel Metamaterial Microelectromechanical Systems Phase Shifter with High Phase Shift and High Bandwidth

In this paper, new topology of phase shifter is proposed that uses advantage of metamaterial and MEMS technology. The phase shifter is switched between two states of RH- and LH-TL having frequency passband unlike other proposed metamaterials which create the maximum phase shift from one unitcell. Analysis and design approach of the phase shifter is presented and the structure is simulated using 3D simulator. The phase shifter creates 180 degree phase shift with return loss and insertion loss that are better than 15 dB and 0.25 dB in both states at frequency ranges of 1.4-4.4 GHz. Therefore, low loss, high bandwidth and high phase shift are the advantages of the new proposed phase shifter.