5G BAW Filter
World’s first 5 GHz LiNbO3 BAW Solidly Mounted Resonator
5G-enabled smartphones operate on up to 50 frequency bands. They rely on band pass filters, a passive component that selects the appropriate frequency band within the full RF spectrum.
CEA-Leti introduces the world’s first BAW-SMR (Bulk Acoustic Waves-Solidly Mounted Resonator), a filter technology based on LiNbO3 piezoelectric materials that can adress 5G's high frequency bands such as N79 (4500-5000 MHz).
What's new?
This new BAW-SMR filter technology is addressing for the first time filtering frequency bands between 4 to 6 GHz with much smaller components. This help achieve tighter integration as BAW-SMR are much more compact than traditionnal LTCC.
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What's next?
This technology has been demonstrated on 100 mm, 150 mm and 200 mm
wafers using standard semiconductor equipment and processing. CEA-Leti has also demonstrated that LiNbO3 materials can be processed
in a CMOS cleanroom facility without cross contaminating other wafers. 150 mm mass production has started and 200 mm is expected by 2024. |