Cavity Stabilised Oscillators for Advanced Analog and Digital Radio Links

This paper describes design and realisation criteria for a complete new line of cavity stabilised oscillators operating in the 2 to 15 GHz frequency ranges. Oscillators, using bipolar transistors and GaAs FET's, are characterised by: a 0 to 45° C frequency stability of 40 ppm in the tunable and of 20-30 ppm in the single frequency version, an RF-to-power supply efficiency of 5 to 10% and direct frequency modulation by order wire.