Reconfigurable Voltage Mode Phase Shifter using Low Voltage Digitally Controlled CMOS CCII

The low voltage digitally controlled current conveyors have been used to realize the digitally controlled reconfigurable continuous time first order voltage mode phase shifters. Each of the realized phase shifters uses two digitally controlled current conveyers along with three passive elements. The realized phase shifters provide digital control to phase angle through an n-bit digital control word. The realized digitally controlled continuous time phase shifters are designed and verified using PSPICE and the results thus obtained justify the theory.