Compact Tunable Phase Shifters on Screen-Printed BST for Balanced Phased Arrays

Author

Sazegar, Mohsen ; Zheng, Yuliang ; Maune, Holger ; Damm, Christian ; Zhou, Xianghui ; Jakoby, Rolf

Author_Institution

Inst. for Microwave Eng. & Photonics, Darmstadt Univ. of Technol., Darmstadt, Germany

Volume

59

Issue

12

fYear

2011

Firstpage

3331

Lastpage

3337

Abstract

Two designs for compact continuously tunable phase shifters are presented employing integrated ferroelectric varactors based on screen-printed barium-strontium-titanate thick film. The circuits are based on left-handed transmission-line topologies that allow to realize very compact modules. The proposed designs have total lengths of 2.1 and 3.8 mm and provide a differential phase shift of more than 360° and a figure of merit of 51°/dB at 10 GHz. Furthermore, the phase shifters are in coplanar strip configuration, making them attractive for systems composed of balanced components.

Keywords

circuit tuning; coplanar waveguides; phase shifters; varactors; balanced phased arrays; compact continuously tunable phase shifter; compact tunable phase shifter; coplanar strip configuration; differential phase shift; integrated ferroelectric varactor; left-handed transmission-line topology; screen-printed BST; screen-printed barium-strontium-titanate thick film; Ferroelectric devices; Integrated circuit modeling; Metamaterials; Permittivity measurement; Phase shifters; Tunable circuits and devices; Tuning; Barium–strontium–titanate (BST); coplanar strip (CPS); ferroelectric devices; left-handed transmission lines; metamaterials; phase shifters; tunable components;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2011.2171985

Filename

6082422