Patents Assigned to Temex SAS
  • Patent number: 7609132
    Abstract: A bulk wave acoustic resonant structure which is in accordance with the invention allows the difficulties encountered at high frequency, the impossibility of working at low frequency on simple structures and the absence of an adequate coupling level to be overcome. The invention therefore proposes the use of an additional layer of material which covers the upper electrode of a piezoelectric transducer in order to localize the position of maximum intensity of the dynamic stress close to the centre of the piezoelectric layer through the effect of propagation. The structure that is in accordance with the invention may be associated with Bragg mirrors and various uses are presented.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: October 27, 2009
    Assignees: Temex SAS, Centre National de la Receheche Scientifique
    Inventors: Sylvain Jean Ballandras, William Steichen, Jeremy Masson
  • Publication number: 20070040473
    Abstract: A bulk wave acoustic resonant structure which is in accordance with the invention allows the difficulties encountered at high frequency, the impossibility of working at low frequency on simple structures and the absence of an adequate coupling level to be overcome. The invention therefore proposes the use of an additional layer of material which covers the upper electrode of a piezoelectric transducer in order to localize the position of maximum intensity of the dynamic stress close to the centre of the piezoelectric layer through the effect of propagation. The structure that is in accordance with the invention may be associated with Bragg mirrors and various uses are presented.
    Type: Application
    Filed: July 28, 2006
    Publication date: February 22, 2007
    Applicants: TEMEX SAS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Sylvain Ballandras, William Steichen, Jeremy Masson