Optimum Phase Coherence Between Multiple RF Outputs

This application note describes the achievable phase coherence of two BNC signal generator or MODEL 845-M synthesizer units phase locked to an external 10 MHz reference.

BNC's synthesized signal generator products are now available up to 26 GHz while enabling tight stability, phase coherency and extremely fast tuning speeds. BNC's RF synthesizers are stand alone units with an integrated precision 100 MHz OCXO, but external programmable 1 to 250 MHz references can be used for phase lock. Some applications require phase coherence to an external reference and particularly between multiple RF channels.