Comparison of Resonance Characteristics in FBAR Devices by Thermal Treatments

  • Mai Linh (School of Engineering, Information and Communications University (ICU)) ;
  • Song Hae-il (School of Engineering, Information and Communications University (ICU)) ;
  • Yoon Giwan (Information and Communications University (ICU))
  • 발행 : 2005.11.01

초록

The paper presents some methods to improve characteristics of film bulk acoustic resonator (FBAR) devices. The FBAR devices were fabricated on Bragg reflectors. Thermal treatments were done by sintering and/or annealing processes. The measurement showed a considerable improvement of return loss $(S_{11})$ and quality factor $(Q_{s/p}).$ These thermal treatment techniques seem very promising for enhancing FBAR resonance performance.

키워드

참고문헌

  1. Sang-ho Kim, et al., 'The Fabrication of Thin-Film Bulk Acoustic Wave Resonators Employing a ZnO/Si Composite Diaphragm Structure Using Porous Silicon Layer Etching', IEEE Elec. Device Letters, Vol. 20, NO.3, March 1999, pp. 113-115 https://doi.org/10.1109/55.748905
  2. R. B. Stokes and J. D. Crawfold, 'X-band thin film acoustic filters on GaAs,' IEEE Trans. Microwave Theory Tech., vol. 41, pp. 1075-1080, July 1993 https://doi.org/10.1109/22.238530
  3. Lakin K.M., G. R. Kline, and K. T. McCrron, 'High-Q microwave acoustic resonators and filters,' IEEE Trans. MTT-S Dig., vol. 41, pp. 1517-1520, 1993 https://doi.org/10.1109/MWSYM.1993.276852
  4. S. V. Krishnaswamy, J. F. Rosenbaum, S. S. Horwitz, and R. A. Moore, 'Film bulk acoustic wave resonator and filter technology,' IEEE MTT-S Dig., pp. 153-155, 1992 https://doi.org/10.1109/MWSYM.1992.187932
  5. J. H. Collins, 'A short history of microwave acoustics,' IEEE Trans. Microwave Theory Tech., vol. MTT-32, pp. 1127-1139, Sept. 1984
  6. J. Kaitila, M. Yliammi, and J. Molarius, 'ZnO Based Thin Film Bulk Acoustic Wave Filters for EGSM Band', IEEE Ultrasonics Symposium, pp. 803-806, 2001 https://doi.org/10.1109/ULTSYM.2001.991844
  7. S. V. Krishnaswamy, J. F. Rosenbaum, S. S. Horwitz, and R. A. Moore, 'Film bulk acoustic wave resonator and filter technology,' IEEE MTT-S Dig., pp. 153-155, 1992 https://doi.org/10.1109/MWSYM.1992.187932
  8. J.J. Lutsky, R. S. Naik, R. Sodini, and C. G. Sodini, 'A sealed cavity TFR process for RF bandpass filters,' in IEDM Tech. Dig., 1996, pp. 441-444
  9. Lakin K.M., et al., 'Solidly mounted resonators and filter'. Proc. IEEE Ultrasonics Symp., Seattle, WA, USA, 1995, pp. 905-908 https://doi.org/10.1109/ULTSYM.1995.495711
  10. Newell W.E., 'Face-mounted piezoelectric resonators', Proc. IEEE, 1965, 53, pp. 575-581 https://doi.org/10.1109/PROC.1965.3925
  11. Lakin K.M., MCCARRON K. T., and MCDONALD J. F., 'Temperature compensated bulk acoustic thin film resonantors', Proc. IEEE Ultrasonics Symp., San Juan, Puerto Rico, 2000, pp. 855-858 https://doi.org/10.1109/ULTSYM.2000.922677
  12. Pinkett S.T., et al., 'Temperature characteristics of ZnO-based thin film bulk acoustic wave resonators'. Proc. IEEE, Ultrasonics Symp., Atlanta, CA. USA, 2001, pp. 823-826 https://doi.org/10.1109/ULTSYM.2001.991847
  13. Yoon G., and Park J.D., 'Fabrication of ZnO-based film bulk acoustic resonator devices using W/$SiO_2$ multilayer reflector', IEE Electron. Lett., 2000, 36,pp. 1435-1438 https://doi.org/10.1049/el:20000986
  14. Kim D.H., et al., 'Improvements of resonance characteristics due to thermal annealing of Bragg reflectors in ZnO-based FBAR devices', IEE Electron. Lett. 2003, 39, pp. 962 - 964 https://doi.org/10.1049/el:20030638
  15. Yim M., et al., 'Significant resonance characteristic improvements by combined used of thermal annealing and Co electrode in ZnO-based FBARs', IEE Electron. Lett. 2003, 39, pp. 1638 - 1640 https://doi.org/10.1049/el:20031029
  16. Mai L., et a1., 'dependence of resonance characteristics on thermal annealing in ZnO-based FBAR devices', KIMICS J., 2004, 2, NO.3., pp. 149-152
  17. Lakin, K.M., KLINE, G.R., and MCCARRON, K.T.: 'High-Q microwave acoustic resonators and filters', IEEE Trans. Microw. Theory Tech., 1993, 41, pp. 2139
  18. Park. S.H., et al.: 'Film bulk acoustic resonator fabrication for radio frequency filter applications', Jpn. J. Appl. Phys., 2000, 39, pp. 4115-4119 https://doi.org/10.1143/JJAP.39.4115