Synchronised oscillatory systems with nonuniform gain in the feedback loop

A complex synchronised oscillatory system of the feedback type, in which the overall loop frequency response has a dip, as in overcoupled resonance circuits, is studied. The advantages of such a response are emphasised. The stability within the synchronisation range is analysed. The pull-in range is obtained experimentally, and an analogue-computer network of an `electronic velodyne¿ is developed for the purpose. The results are presented in a form suitable for the design of such synchronised systems.