Hybrid positive and negative parameter delay-line synthesis

A network comprising conventional inductors and capacitors in combination with negative inductors and capacitors permits a synthesis method for delay networks which cannot be achieved with positive parameters alone.The negative indutors and capacitors is such hybrid networks are provided by conventional circuit elements in conjuction with active devices. An example is given; in comparison with a simple constant-k network this design has both an increased delay per section for a comparable frequency range and a lower insertion loss as a result of the use of negative resistance for loss compensation.