Ferroelectric thick-film varactors based on Barium-Strontium-Titanate for high power applications

Author

Maune, H. ; Sazegar, M. ; Zheng, Y. ; Jakoby, R.

Author_Institution

Microwave Eng., Tech. Univ. Darmstadt, Darmstadt, Germany

fYear

2010

fDate

10-14 Jan. 2010

Firstpage

424

Lastpage

427

Abstract

Tunable coplanar interdigital capacitors (IDC) based on Barium-Strontium-Titanate (BST) thick-films are evaluated for their suitability for high power applications, such as tunable impedance matching networks of power amplifiers. The design process has been reviewed with respect to the nonlinearity of the varactors. Various devices have been fabricated and their performance has been verified by measurements. The realized devices show a high IP3 around 60 dBm.

Keywords

barium compounds; ferroelectric capacitors; impedance matching; microwave power amplifiers; strontium compounds; thick film capacitors; varactors; BaSrTiO₃; ferroelectric thick-film varactors; microwave power amplifiers; tunable coplanar interdigital capacitors; tunable impedance matching; Binary search trees; Ferroelectric materials; Impedance matching; Microwave amplifiers; Nonlinear distortion; Permittivity; Power amplifiers; Process design; Varactors; Voltage; Ferroelectric; Microwave power amplifiers; Nonlinear distortion; Varactors;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Symposium (RWS), 2010 IEEE

Conference_Location

New Orleans, LA

Print_ISBN

978-1-4244-4725-1

Electronic_ISBN

978-1-4244-4726-8

Type

conf

DOI

10.1109/RWS.2010.5434186

Filename

5434186