Morgan explores how progressive techniques, in the creation of sophisticated reflectionless filter topologies, can optimize filter responses and emphasises real-world applications and implementations.

His book offers an insight into classical and Gaussian absorptive filters, diplexers, directional and hybrid-coupled filters. It presents tools for the creation of advance topology and focuses on passive microwave networks, multiplexers, two-port, filter transfer functions and transmission lines. This includes up/down converters, multiplier chains, broadband amplifiers, slope equalizers, and time domain applications.