Tunable BST capacitor loss compensation using active circuit

Mahmoud Al Ahmad (1) , Nathalie Rolland (1) , Paul-Alain Rolland (1)

1 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520

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 -|G n | 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

Mots clés: Tunable circuits and devices; Binary search trees; Capacitors; Active circuits; Dielectric losses; Conducting materials; Dielectric materials; Barium; Strontium; Titanium compounds

Domaines: Sciences de l'ingénieur [physics]

Mahmoud Al Ahmad, Nathalie Rolland, Paul-Alain Rolland. Tunable BST capacitor loss compensation using active circuit. IEEE Microwave and Wireless Components Letters, 2006, 16, pp.549-551. ⟨hal-00154924⟩