Transmission characteristics of an FDM system using Mach-Zehnder filters

A plain representation of the amplitude transfer function using a Mach-Zehnder filter model is proposed by applying the analysis technique for a transmission type periodic branching microwave filter. A four-channel frequency division multiplexing system configuration using the Mach-Zehnder filter models is presented as an example of a multi-channel FDM system. The amplitude transfer functions for the channels of the presented system are exhibited by using the proposed representation. The calculated result of a signal to inter-channel interference ratio for the system together with a two-channel and an eight-channel FDM system are shown.