FBAR Oscillator Stabilized by Rb Atomic Resonator for SHF/EHF-Band Wireless Devices

Motoaki Hara, Yuichiro Yano, Hiroyuki Ito, Masaya Toda, Takahito Ono, Masatoshi Kajita, Shinsuke Hara, Akifumi Kasamatsu, Tetsuya Ido

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


We propose an FBAR oscillator for the wireless system used in the superhigh-frequency (SHF) band or extremely high-frequency (EHF) band. At these frequencies, a high-precision standard clock is required, and it is preferable that the clock frequency be set to a GHz-order band to mitigate the amount of frequency multiplication. In this study, we developed a 3.5 GHz band thin-film bulk acoustic resonator (FBAR)oscillator and stabilized it to the hyperfine transition of alkali atoms 87 Rb. Consequently, a short-term frequency instability of 8.5 × 10- 12 at 1s was achieved.

Original languageEnglish
Article number8579685
JournalIEEE International Ultrasonics Symposium, IUS
Publication statusPublished - 2018
Event2018 IEEE International Ultrasonics Symposium, IUS 2018 - Kobe, Japan
Duration: 2018 Oct 222018 Oct 25


  • FBAR
  • hyper fine transition
  • oscillator


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