Structures of prototypes for broadband microwave filters, diplexers and matching networks

General structures and a classification of prototypes (for about 250 networks) for broadband microwave filters and matching networks for given complex load are presented. The peculiarities of synthesis methods, theoretical limitations and properties of input impedance for singly terminated and double terminated networks and frequency diplexers are described. Results of a computer simulation of frequency characteristics for different broadband filters and matching networks are presented