Title :
A model for ferroelectric phase shifters
Author :
Romanofsky, R.R. ; Qureshi, A.H.
Author_Institution :
Glenn Res. Center, Nat. Aeronaut. & Space Adm., Cleveland, OH, USA
fDate :
9/1/2000 12:00:00 AM
Abstract :
Novel microwave phase shifters consisting of coupled microstriplines on thin ferroelectric films have been demonstrated recently. A theoretical model useful for predicting the propagation characteristics (insertion phase shift, dielectric loss, impedance, and bandwidth) is presented here. The model is based on a variational solution for line capacitance and coupled strip transmission line theory
Keywords :
dielectric losses; ferroelectric devices; microstrip lines; microwave phase shifters; variational techniques; bandwidth; coupled microstriplines; coupled strip transmission line theory; dielectric loss; ferroelectric phase shifters; impedance; insertion phase shift; line capacitance; microwave phase shifters; propagation characteristics; variational solution; Couplings; Dielectric losses; Ferroelectric films; Ferroelectric materials; Impedance; Microstrip; Microwave propagation; Phase shifters; Predictive models; Propagation losses;
Journal_Title :
Magnetics, IEEE Transactions on
