A Novel Ultra-Wideband 90 Degrees GaAs MMIC Phase Shifter With Either Analogue Or Digital Control

摘要

Design, fabrication and characterization of a novel ultra-wideband, GaAs MMIC digital/analogue compatible 90 °phase shifter is described over 5 to 20 GH band. The topology was specifically selected to minimize process variations on performance. Low peak phase error, PPE (≤5 degree), low VSWR(≤1.5), low insertion loss variations(≤3.0±0.6 dB) and good phase shift linearity with the control voltage of MESFET's gates for analogous state are exhibited over 5 to 20 GHz frequency range. The chip size of the MMIC phase shifter is 4.2mm×0.56mm×0.1mm.