AN APPROACH TO DISTRIBUTED-AMPLIFIER BASED ON A DESIGN-ORIENTED FET MODEL

A Design-Oriented FET model in conjunction with an appropriate design procedure for distributed amplifiers is presented. The advantage of in cluding the effects caused by FET parasitics in a newly defined simple unilateral FET circuit to be utilized in the conventional distributed amplifier design procedure allows an accurate prediction of the low-f requency gain and the 3-dB cutoff frequency, The simplicity of this fo rmulation and a set of generalized design charts provide an interestin g opportunity to designers. Comparisons among different experimental d ata from literature and the results obtained by this theory confirm th e validity of the Design-Oriented FET model and the effectiveness of t he given graphical design method.