Title :
Electromagnetic investigation on the propagation in distributed active devices
Author :
Farina, M. ; Morini, A. ; Pierantoni, L. ; Rozzi, T.
Author_Institution :
Dipt. di Elettronica e Autom., Ancona Univ., Italy
fDate :
10/1/1997 12:00:00 AM
Abstract :
An electromagnetic model for the study of the propagation mechanisms in distributed FET components, including conductor and dielectric losses, is proposed. The model also describes the effect of carrier-velocity saturation and finite carrier-transit time. Amplification is treated under the small-signal assumption. The method is applied to the characterisation of a GW-TWFET and a set of basic considerations and some design guidelines are provided which derive from an analysis of the energy constraints
Keywords :
carrier mobility; dielectric losses; distributed parameter networks; electromagnetic fields; electromagnetic wave propagation; microwave amplifiers; microwave field effect transistors; semiconductor device models; travelling wave amplifiers; EM field based method; GW-TWFET; amplification; carrier-velocity saturation; conductor losses; design guidelines; dielectric losses; distributed FET components; distributed active devices; electromagnetic investigation; electromagnetic model; energy constraints; finite carrier-transit time; growing wave concept; propagation mechanisms; small-signal assumption;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:19971333
