Application of ferroelectrics in phase shifter design

Author

Kozyrev, A. ; Osadchy, V. ; Pavlov, A. ; Sengupta, L.

Author_Institution

St. Petersburg Electrotech. Univ., St. Petersburg, Russia

Volume

3

fYear

2000

fDate

11-16 June 2000

Firstpage

1355

Abstract

The theoretical aspects of the design of optimal construction of microwave ferroelectric phase-shifter are discussed. The 30 GHz phase-shifter based on grounded coplanar waveguide with layered structure is under investigation. As a result expressions to determine the optimal construction of CPW ferroelectric phase-shifter and the suitable composition of ferroelectric film are derived. Continuous 0-360 degree phase shift and maximum insertion losses of 8 dB have been experimentally demonstrated by Ka-band ferroelectric phase-shifter. Further optimization of suitable ferroelectric film composition and phase-shifter sizes makes it possible to achieve a figure of merit /spl sim/80 deg/dB.

Keywords

Coplanar waveguide components; Ferroelectric devices; Ferroelectric thin films; Losses; Microwave phase shifters; 30 GHz; Ka-band; ferroelectric film composition; grounded coplanar waveguide; insertion losses; layered structure; microwave ferroelectric phase-shifter; phase shifter design; phase-shifter sizes; Coplanar waveguides; Dielectric constant; Dielectric losses; Dielectric substrates; Ferroelectric films; Ferroelectric materials; Iron; Phase shifters; Phased arrays; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest. 2000 IEEE MTT-S International

Conference_Location

Boston, MA, USA

ISSN

0149-645X

Print_ISBN

0-7803-5687-X

Type

conf

DOI

10.1109/MWSYM.2000.861792

Filename

861792