• DocumentCode
    378578
  • Title

    Second harmonic reflectors on 128°LiNbO3

  • Author

    Lehtonen, Saku ; Plessky, Victor P. ; Koskela, Julius ; Salomaa, M.M.

  • Author_Institution
    Mater. Phys. Lab., Helsinki Univ. of Technol., Finland
  • Volume
    1
  • fYear
    2001
  • fDate
    2001
  • Firstpage
    139
  • Abstract
    In this work, we study theoretically the operation of surface-acoustic wave (SAW) reflectors at the second harmonic frequency on the 128° LiNbO3 substrate for various electrode thicknesses and metallisation ratios. Rigorous FEM/BEM simulations utilizing a tailored test structure and time gating indicate that for certain geometries, the reflectivity of the 2nd harmonic reflectors can be very high. Furthermore, our simulations suggest that inside the stopband the total losses for the second harmonic are of the same order as those for fundamental harmonic operation
  • Keywords
    Rayleigh waves; boundary-elements methods; electrodes; finite element analysis; lithium compounds; losses; surface acoustic wave resonators; FEM/BEM simulations; LiNbO3; Rayleigh waves; SAW resonators; electrode thicknesses; metallisation ratios; reflectivity; second harmonic frequency; second harmonic reflectors; stopband; tailored test structure; time gating; total losses; Electrodes; Fingers; Frequency; Geometry; Gratings; Physics; Reflectivity; Surface acoustic waves; Testing; Transducers;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Ultrasonics Symposium, 2001 IEEE
  • Conference_Location
    Atlanta, GA
  • Print_ISBN
    0-7803-7177-1
  • Type

    conf

  • DOI
    10.1109/ULTSYM.2001.991595
  • Filename
    991595
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=378578