High Frequency Temperature Stable SBAW Oscillators

Oscillators at 1, 2 and 3.4 GHz have been developed using Shallow Bulk Acoustic Wave (SBAW) delay 1 ines as the frequency controlling element. The SBAW delay lines were fabricated on rotated Y-cut quartz with r otation angle near 36”. The key to obtaining low insertion loss devices was found to be the use of thin metallization (% 300 A Ai) and embedded transducers. high frequency