High frequency thin film acoustic ferroelectric resonators

  • Paul Kirby
  • , Qing Xin Su
  • , Eiju Komuro
  • , Masaaki Imura
  • , Qi Zhang
  • , Roger Whatmore

Research output: Contribution to journalArticlepeer-review

Abstract

Both ZnO and PZT Thin Film Bulk Acoustic Resonator filters were fabricated, tested and modeled in this study. The development of an accurate Mason model allows the effect of particular parasitic components on the microwave s-parameters in the region of the series and parallel resonances to be identified. The parasitic components that limit the performance of our ZnO and PbZr0.3T0.7O3 Thin Film Bulk Acoustic Resonator filters are analysed. From an analysis of PbZr0.3Ti0.7O3 Thin Film Bulk Acoustic Resonator measurements values for the longitudinal acoustic velocity and electromechanical coupling coefficient can be derived. Measured PbZ0.3T0.7O3 Thin Film Bulk Acoustic Resonator filter responses confirm that the larger electromechanical coupling coefficients in this material compared to ZnO give wider filter band-widths.

Original languageEnglish
Pages (from-to)XCXXX-XCXXXI
JournalMaterials Research Society Symposium - Proceedings
Volume655
Publication statusPublished - 2001
Externally publishedYes

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