Reconfigurable left handed microstrip phase delay line

The reconfigurability of phase delay in a complementary split ring resonator (CSRR) loaded microstrip transmission line with capacitive stubs is presented. The reconfigurable phase delay is achieved by varying the short positions on the CSRR. A linear increment in the phase delay is obtained by varying the short positions of the inner ring of the CSRR. Five distinct phase delays are obtained for different positions of the short with a maximum phase delay of -340°. The phase delays generated by the Left Handed phase delay line fall within a range between -340.32° and -308.97° when compared to a reference transmission line.