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Tunability of ferroelectric varactors up to 60 GHz

Tunability of ferroelectric varactors up to 60 GHz

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  • Author(s): L. Burgnies 1 ; G. Vélu 1 ; K. Blary 2 ; J.-C. Carru 1 ; D. Lippens 2
    • View affiliations
    • Affiliations: 1: Laboratoire d'Etude des Matériaux et Composants pour l'ELectronique, Université du Littoral - Côte d'Opale, Calais cedex, France
      2: Microwave and Semi-conductor Department, Institute of Electronics, Microelectronics and Nanoelectronics, Villeneuve d'Ascq cedex, France
  • Source: Volume 43, Issue 21, 11 October 2007, p. 1151 – 1152
    DOI:  10.1049/el:20071996 , Print ISSN 0013-5194, Online ISSN 1350-911X
© The Institution of Engineering and Technology
Published

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 (ɛr∼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.

Inspec keywords: varactors; titanium compounds; barium compounds; ferroelectric devices; strontium compounds

Other keywords: interdigitated varactors; quality factor; BaSrTiO3; frequency 10 GHz to 60 GHz; broad centimetre-millimetre band; tunability; bias offset; TRL-multiline deembedding technique; capacitance; voltage-controlled ferroelectric varactors

Subjects: Capacitors; Ferroelectric devices

References

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