Title :
Tunability of ferroelectric varactors up to 60 GHz
Author :
Burgnies, L. ; Vélu, G. ; Blary, K. ; Carru, J.-C. ; Lippens, D.
Author_Institution :
Lab. d´´Etude des Mater. et Composants pour l´´Electron., Univ. du Littoral, Calais
Abstract :
A TRL-multiline de-embedding technique for the determination of the electrical parameters of interdigitated varactors over a broad centimetre-millimetre band is proposed. The method is applied to voltage- controlled ferroelectric (BaSrTiO3) varactors, which exhibit almost constant frequency dependence of the capacitance (epsivr~300) from 10 to 60 GHz. The capacitance ratio is ~2 for a 30 V bias offset, and the quality factor is of the order 10 at 30 V.
Keywords :
barium compounds; ferroelectric devices; strontium compounds; titanium compounds; varactors; BaSrTiO3; TRL-multiline deembedding technique; bias offset; broad centimetre-millimetre band; capacitance; frequency 10 GHz to 60 GHz; interdigitated varactors; quality factor; tunability; voltage-controlled ferroelectric varactors;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20071996
