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Memorias de investigación
Communications at congresses:
Wide Bandwidth Bragg Mirrors for Multi-band Filter Chips
Year:2009
Research Areas
  • Electronics engineering
Information
Abstract
We investigate the performance of Bragg mirrors containing iridium and porous silicon dioxide layers as acoustic reflectors for aluminum nitride solidly mounted resonators. The very large mismatch between the acoustic impedances of these materials allow to broaden the bandwidth of the mirrors to values larger than 2 GHz. Bragg mirrors consisting of five alternating layer of Ir and porous SiO2 are designed and fabricated. Resonators of AlN with Ir electrodes with resonant frequencies ranging between 1.6 GHz and 2.7 GHz are built on top of the same Bragg mirror. Their coupling coefficients around 6% are roughly independent of the resonant frequency, whereas their quality factors vary from 1200 to 300 as the resonant frequency increases.
International
No
Congress
2009 IEEE International Ultrasonics Symposium
960
Place
Roma, Italia
Reviewers
Si
ISBN/ISSN
1051-0117
Start Date
20/09/2009
End Date
23/09/2009
From page
2119
To page
2122
2009 IEEE International Ultrasonics Symposium Proc.
Participants
  • Participante: J. Capilla (Universidad Politécnica de Madrid)
  • Autor: Jimena Olivares Roza (UPM)
  • Participante: E. Wegmann (Universidad Politécnica de Madrid)
  • Autor: Enrique Iborra Grau (UPM)
  • Autor: Marta Clement Lorenzo (UPM)
  • Autor: Jesus Sangrador Garcia (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Microsistemas y Materiales Electrónicos
  • Departamento: Tecnología Electrónica
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