@inproceedings{f9654fcf4b19434295d67af5f29e021a,
title = "Bulk acoustic wave resonators of low lateral energy leakage using air edge reflector",
abstract = "A novel bulk acoustic wave (BAW) resonator structure with air edge reflectors is proposed. The air reflectors provided at the border of the resonator suppress the acoustic wave leakage travelling in lateral direction. The difference of acoustic impedance at the air edge interface is so large that the reflectivity is almost unity which indicates perfect reflection. As a result of optimized lateral structure, the Q-factor at antiresonance frequency (Qa) is improved significantly to 2740. Furthermore, the effective electro-mechanical coupling coefficient (kt 2) which is essential to achieve wide band-width of RF filters is increased considerably by 14%. We also perform multi-physics simulation and investigate the effect of the lateral wave leakage for the BAW structures.",
keywords = "Acoustic devices, Film bulk acoustic wave resonator, Microelectromechanical devices, Rf filters",
author = "Shin, {Jea Shik} and Insang Song and Moonchul Lee and Hosoo Park and Son, {Sang Uk} and Kim, {Chul Soo} and Kim, {Duck Hwan} and Jing Cui and Hwang, {Sung Woo} and Rieh, {Jae Sung}",
year = "2012",
doi = "10.1109/MWSYM.2012.6259499",
language = "English",
isbn = "9781467310871",
series = "IEEE MTT-S International Microwave Symposium Digest",
booktitle = "IMS 2012 - 2012 IEEE MTT-S International Microwave Symposium",
note = "2012 IEEE MTT-S International Microwave Symposium, IMS 2012 ; Conference date: 17-06-2012 Through 22-06-2012",
}