Foreword (Sep. 1982 Transactions)

New Systems continue to require microwave filters with ever more stringent passband and stopband control, smaller size, and lighter weight. Today´s communications satellites, as an example, demand the tightest possible packing of channels in specific total bands. This requirement has stimulated especially sophisticated advances in insertion-loss and group-delay performance, more practical and compact configurations, and more versatile and useful theoretical design theory for bandpass two-ports and multiplexer.