A High-Selectivity 11.9-GHz Filter Realized in a Periodically Poled Piezoelectric AlScN Film
This letter presents a highly selective bulk acoustic wave (BAW) filter operating at 11.9 GHz, fabricated with periodically poled piezoelectric film (P3F) aluminum scandium nitride (AlScN) technology. The metric used in determining selectivity is the 20-dB shape factor, defined as the ratio of the 20-dB to 3-dB filter bandwidth (BW). With a 20-dB shape factor of 1.71 and a minimum insertion loss (IL) of 1.5 dB, this filter is suitable for RF filtering applications that require efficient spectrum utilization or mitigation of near band interference.
Authors
- Pinal Patel
- Mojtaba Hodjat-Shamami (ORCID: https://orcid.org/0000-0001-7155-8907)
- Craig Moe (ORCID: https://orcid.org/0000-0002-1142-236X)
- Seshadev Sahoo (ORCID: https://orcid.org/0000-0001-9861-1958)
- Roy H. Olsson (ORCID: https://orcid.org/0000-0002-8007-5082)
- Xingyu Du (ORCID: https://orcid.org/0000-0002-4974-5551)
- Merrilyn Mercy Adzo Fiagbenu (ORCID: https://orcid.org/0009-0006-3952-5498)
- Daeho Kim (ORCID: https://orcid.org/0000-0003-4242-316X)
- Shun Yao
- Ramakrishna Vetury
Institutions
- University of Pennsylvania (US)
Publication Details
- Journal
- IEEE Microwave and Wireless Technology Letters
- Published
- 2025-06-27
- DOI
- https://doi.org/10.1109/lmwt.2025.3581841
- Citations
- 2
- Primary Topic
- Acoustic Wave Resonator Technologies
- Type
- article
- Field-Weighted Citation Impact
- 1.35
Funders
- Defense Advanced Research Projects Agency