Comparison of barium strontium titanate varactors on magnesium oxide and alumina substrates

Author

Price, Tony ; Weller, Thomas ; Shen, Ya ; Gong, Xun

Author_Institution

Center for Wireless & Microwave Inf. Syst., Univ. of South Florida, Tampa, FL, USA

fYear

2011

fDate

18-19 April 2011

Firstpage

1

Lastpage

5

Abstract

A comparison of tunability and nonlinearity of planar (interdigital) barium strontium titanate varactors fabricated on magnesium oxide (MgO) and alumina substrates is presented. The results show that higher tunability is obtained on alumina than on MgO substrates. Two-tone measurements reveal that the devices fabricated on alumina exhibit more nonlinearity than those fabricated on MgO at relatively high RF power levels. The observed geometry-dependence of the non-linear performance is discussed.

Keywords

barium compounds; strontium compounds; tuning; varactors; Al₂O₃; Ba_0.5Sr_0.5TiO₃; MgO; alumina substrates; geometry dependence; magnesium oxide substrates; nonlinearity; planar barium strontium titanate varactors; tunability; two-tone measurements; Aluminum oxide; Barium; Distortion measurement; Magnesium oxide; Strontium; Substrates; Titanium compounds; barium strontium titanate; ferroelectrics; intermodulation distortion; tunability; two-tone measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Microwave Technology Conference (WAMICON), 2011 IEEE 12th Annual

Conference_Location

Clearwater Beach, FL

Print_ISBN

978-1-61284-081-9

Type

conf

DOI

10.1109/WAMICON.2011.5872902

Filename

5872902