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4.5 GHz Lithium Niobate MEMS Filters With 10% Fractional Bandwidth for 5G Front-Ends.
- Source :
-
Journal of Microelectromechanical Systems . Aug2019, Vol. 28 Issue 4, p575-577. 3p. - Publication Year :
- 2019
-
Abstract
- This paper presents a new class of micro-electro-mechanical system (MEMS) C-band filters for 5G front-ends. The filter is comprised of resonators based on the first-order asymmetric Lamb wave (A1) mode in thin-film lithium niobate. Two filters have been demonstrated at 4.5 GHz with sharp roll-off, flat in-band group delay, and spurious-free response over a wide frequency range. The first design shows a 3-dB fractional bandwidth (FBW) of 10%, an insertion loss (IL) of 1.7 dB, an out-of-band (OoB) rejection of −13 dB, and a compact footprint of 0.36 mm2, while the second design shows a 3-dB FBW of 8.5%, an IL of 2.7 dB, an OoB rejection of −25 dB, and a footprint of 0.9 mm2. The demonstrations herein mark the largest FBW achieved for acoustic-only filters at 5G frequencies. [2019-0083] [ABSTRACT FROM AUTHOR]
- Subjects :
- *SUBSTRATE integrated waveguides
*LITHIUM niobate
*FILTERS & filtration
*BANDWIDTHS
Subjects
Details
- Language :
- English
- ISSN :
- 10577157
- Volume :
- 28
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Journal of Microelectromechanical Systems
- Publication Type :
- Academic Journal
- Accession number :
- 137913845
- Full Text :
- https://doi.org/10.1109/JMEMS.2019.2922935