All-Pass Based Filter Design Using BAW Resonators

Titelangaben

Bogner, Andreas ; Bauder, Rüdiger ; Timme, Hans-Jörg ; Reccius, Christian ; Weigel, Robert ; Hagelauer, Amelie:
All-Pass Based Filter Design Using BAW Resonators.
In: 2019 IEEE International Ultrasonics Symposium (IUS). - Piscataway, NJ : IEEE , 2019 . - S. 1685-1688
ISBN 978-1-7281-4596-9
DOI: https://doi.org/10.1109/ULTSYM.2019.8925738

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Abstract

The integration of multiple bands and higher power standards lead to enhanced interference problems and make higher attenuation levels in next-gen RF-Front-Ends necessary. This paper introduces an all-pass based BAW filter design concept for notch, band-stop and band-pass filter topologies to indicate the possibilities and the impact of key parameters like material electromechanical coupling factor k eff 2 , piezoelectric material quality factor Q m and inductor losses Q L . This work outlines the concept and design aspects. Also various examples will be proposed to show the main benefits of this approach.