Hybrid Mic´s For a 6 GHz Phase Locked Divider Loop

The microwave part is described of a 6 GHz phase locked loop with direct division, consisting of a FET voltage controlled oscillator, a power splitter and two binary frequency dividers connected by coupling amplifiers. As microwave digital integrated circuits at 6 GHz are still in the research phase, hybrid microwave circuitry is employed for these essential functions in microwave frequency synthesizers. The microwave frequency dividers remain synchronized over a 1 GHz range and are built from lumped elements on a thin film substrate. Application details of the different technologies are given.