S. Pourkamali, G. K. Ho and F. Ayazi, “Low-impedance VHF and UHF capacitive silicon bulk acoustic wave resonators, Part I: concept and fabrication,” IEEE Transactions on Electron Devices, vol. 54, no. 8, pp. 2017–2023, August 2007. 
S. Pourkamali, G. K. Ho and F. Ayazi, “Low-impedance VHF and UHF capacitive silicon bulk acoustic wave resonators, Part I: concept and fabrication,” IEEE Transactions on Electron Devices, vol. 54, no. 8, pp. 2017–2023, August 2007.