General Synthesis Methodology for the Design of Acoustic Wave Ladder Filters and Duplexers

In a scenario where the segment of wireless communication systems are allocated in an ever more crowded frequency spectrum, the design of filtering structures, stand-alone, duplexers, or multiplexers, become a challenging task. Moreover, filters based on acoustic wave resonators are the more suitabl...

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Bibliographic Details
Published in:IEEE access 2018-01, Vol.6, p.47969-47979
Main Authors: Gimenez, Alfred, Verdu, Jordi, De Paco Sanchez, Pedro
Format: Article
Language:English
Subjects:
Acoustic waves
Acoustics
Admittance
Bulk acoustic wave filters
duplexer
Duplexers
Electromagnetic wave filters
elliptic filters synthesis
extracted pole
Filtering theory
Frequency spectrum
Integrated circuit modeling
Methodology
non-resonating node (NRN)
Prototypes
Resonators
Shunts (electrical)
surface acoustic wave filters
Synthesis
Wireless communication systems
Wireless communications
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Summary:In a scenario where the segment of wireless communication systems are allocated in an ever more crowded frequency spectrum, the design of filtering structures, stand-alone, duplexers, or multiplexers, become a challenging task. Moreover, filters based on acoustic wave resonators are the more suitable technology in this context due to the small size and the exhibited outstanding performance. However, to accommodate the technological requirements to the mask fulfillment is not straightforward unless a systematic synthesis methodology is used. Taking advantage on the nodal approach, the general synthesis methodology for ladder-type filters based on acoustic wave resonators is presented in this paper. This is a very fast procedure, which allow a better understanding of the interaction between technological constraints and filter performance. An experimental validation is proposed for a B28Rx band filter.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2018.2865808