In this paper, four sets of GCPW (Grounded Coplanar Waveguide) FET DROs and four sets of microstrip FET DROs based on the series feedback configuration at 10 GHz have been designed, realized, and compared. The GCPW DROs have been designed and fabricat...
In this paper, four sets of GCPW (Grounded Coplanar Waveguide) FET DROs and four sets of microstrip FET DROs based on the series feedback configuration at 10 GHz have been designed, realized, and compared. The GCPW DROs have been designed and fabricated based on coupling between a TE… mode dielectric resonator and a uniform GCPW line[10]. Based on identical FETs and dielectric substrate, the four sets of GCPW FET DROs have been compared with four sets of the microstrip FET DROs, in terms of output power and phase noise under the identical bias condition. The GCPW DROs always show better phase noise characteristic. However, for output power characteristic we cannot directly compare the GCPW FET DROs with the micorstrip DROs since only two GCPW FET DROs show higher output power than that of the microstrip FETDROs.