Title :
Tunable BST capacitor loss compensation using active circuit
Author :
Ahmad, Mohd Ashraf ; Rolland, Nathalie ; Rolland, Paul-Alain
Author_Institution :
CNRS, Lille
Abstract :
The compensation of the ohmic and the material dielectric losses in a barium strontium titanate (BST) capacitor using an active circuit is reported in this letter. The negative resistance (NR) circuit creates an effective conductance of -|Gn| which adds to the positive conductance of the passive BST-based tuned capacitor. As a result, the compensation of the losses is significantly improved in the hybrid circuit by more than 50%. To our knowledge, this is the first work in tunable BST capacitor loss compensation using a NR circuit ever reported
Keywords :
electric admittance; negative resistance circuits; thin film capacitors; varactors; BST capacitor; BaSrTiO3; NR circuit; active circuit; barium strontium titanate; capacitor loss compensation; dielectric losses; negative resistance circuits; tunable circuits; tunable devices; varactors; Active circuits; Barium; Binary search trees; Capacitors; Conducting materials; Dielectric losses; Dielectric materials; Strontium; Titanium compounds; Tunable circuits and devices; Barium strontium titanate (BST); compensation; losses; negative resistance (NR) circuits; tunable devices and circuits; tuning; varactors;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2006.882394
