Suspended microstrip line on multilayer ferroelectric - polymer composite film for ku-band tuneable applications

Author

Nautiyal, Arvind ; Sekhar, K. Chandra ; Pathak, Nagendra Prasad ; Nath, R.

Author_Institution

Dept. of Phys., Indian Inst. of Technol. Roorkee, Uttrakhand

fYear

2008

fDate

21-24 Nov. 2008

Firstpage

103

Lastpage

105

Abstract

Suspended microstrip line on multilayer ferroelectric-polymer composite film is investigated to determine its dispersion and propagation characteristics. Full wave FEM simulator HFSS is used to determine propagating modes and their field configurations in this complex structure. Initial dielectric constant of the ferroelectric film (BaTiO₃) is selected as 10 and it is varied up to 300. For low value of epsiv_r film (~10), this structure supports propagating mode similar to quasi TEM mode. But as we increase the value of dielectric constant of film, higher order modes starts propagating and the energy transmission takes place mainly through surface wave like modes and field lines of desired mode in the structure is concentrated in the high dielectric constant film layer and wave propagation is taking place through the dielectric.

Keywords

barium compounds; composite materials; ferroelectric thin films; finite element analysis; high-k dielectric thin films; microstrip lines; microwave propagation; multilayers; polymer films; Ku-band tuneable applications; dielectric constant; dispersion characteristics; energy transmission; full wave FEM simulator; multilayer ferroelectric-polymer composite film; surface wave like modes; suspended microstrip line; wave propagation; Circuit simulation; Dielectric constant; Dielectric substrates; Ferroelectric films; Ferroelectric materials; Microstrip; Microwave devices; Nonhomogeneous media; Polymer films; Tunable circuits and devices; Ferroelectric film; characteristic impedance; suspended microstrip line;

fLanguage

English

Publisher

ieee

Conference_Titel

Recent Advances in Microwave Theory and Applications, 2008. MICROWAVE 2008. International Conference on

Conference_Location

Jaipur

Print_ISBN

978-1-4244-2690-4

Electronic_ISBN

978-1-4244-2691-1

Type

conf

DOI

10.1109/AMTA.2008.4763008

Filename

4763008