(2014). Wideband 180 degree phase shifter with low phase error. Applied Electromagnetics, 2(2), -.
. "Wideband 180 degree phase shifter with low phase error", Applied Electromagnetics, 2, 2, 2014, -.
(2014). 'Wideband 180 degree phase shifter with low phase error', Applied Electromagnetics, 2(2), pp. -.
Wideband 180 degree phase shifter with low phase error. Applied Electromagnetics, 2014; 2(2): -.
)
