Mitarbeiter

M. Sc. Wolfgang Akstaller

Kontakt

Über Wolfgang Akstaller

Lebenslauf

Wolfgang Akstaller beendete im Dezember 2014 sein Studium der „Elektrotechnik, Elektronik und Informationstechnik“ mit Schwerpunkt „Allgemeine Elektrotechnik“ an der FAU Erlangen-Nürnberg. Seit Februar 2015 arbeitet er als wissenschaftlicher Mitarbeiter am Lehrstuhl für Technische Elektronik. Seine Forschungsschwerpunkte liegen in den Bereichen Hochfrequenztechnik und Mikroakustik.

Arbeitsgebiete

  • Mikroakustische Komponenten wie SAW und BAW
  • Nichtlineare Charakterisierung

Abschlussarbeiten

Im Rahmen meiner Forschungstätigkeiten gibt es verschiedene Themengebiete für Abschlussarbeiten. So sind Themen im Bereich messtechnische Charakterisierung sowie Modellierung und Simulation möglich. Arbeiten können prinzipiell in Deutsch oder Englisch verfasst werden. Bitte meldet euch, falls Interesse an einem der genannten Arbeitsgebiete besteht.

Preise & Auszeichnungen

  • W. Akstaller, International Ultrasonics Symposium 2017: Student Travel Support, 2017 IEEE International Ultrasonics Symposium, 2017. [Bibtex]
    @prize{akstaller_prize_2017,
    abstract = {Forschungsgebiet im entsprechenden Fachbereich der Koferenz.},
    author = {Akstaller, Wolfgang},
    booktitle = {2017 IEEE International Ultrasonics Symposium},
    cris = {akstaller_prize_2017},
    year = {2017},
    month = {09},
    day = {08},
    title = {International Ultrasonics Symposium 2017: Student Travel Support},
    type = {20773-Kleiner Preis},
    }
  • W. Akstaller, International Microwave Symposium 2015 PhD Student Sponsorship Initiative, MTT-S Administrative Committee, 2015. [Bibtex]
    @prize{akstaller_prize_2015,
    abstract = {Forschungsgebiet im entsprechenden Fachbereich der Koferenz und freiwilliger Helfer.},
    author = {Akstaller, Wolfgang},
    booktitle = {MTT-S Administrative Committee},
    cris = {akstaller_prize_2015},
    year = {2015},
    month = {05},
    day = {18},
    title = {International Microwave Symposium 2015 PhD Student Sponsorship Initiative},
    type = {20773-Kleiner Preis},
    }

COPYRIGHT NOTICE: Copyright and all rights of the material above are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by the appropriate copyright. The material may not be reposted without the explicit permission of the copyright holder.

COPYRIGHT NOTICE FOR IEEE PUBLICATIONS: © IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

COPYRIGHT NOTICE FOR EUMA PUBLICATIONS: © EUMA. Personal use of this material is permitted. Permission from European Microwave Association(EUMA) must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Publikationen

2019

  • V. Chauhan, C. Huck, A. Frank, W. Akstaller, R. Weigel, and A. Hagelauer, "Multiphysical Modeling and Performance Enhancement of RF Bulk Acoustic Wave Components", IEEE Microwave Magazine, iss. IEEE Microwave Magazine, 2019 (to be published). [Bibtex]
    @article{chauhan2018e,
    author = {Chauhan, Vikrant and Huck, Christian and Frank, Astrid and Akstaller, Wolfgang and Weigel, Robert and Hagelauer, Amelie},
    language = {English},
    cris = {https://cris.fau.de/converis/publicweb/publication/109488104},
    year = {2019},
    faupublication = {yes},
    issn = {1527-3342},
    journaltitle = {IEEE Microwave Magazine},
    note = {unpublished},
    number = {IEEE Microwave Magazine},
    peerreviewed = {automatic},
    shortjournal = {IEEE MICROW MAG},
    title = {Multiphysical Modeling and Performance Enhancement of RF Bulk Acoustic Wave Components},
    type = {Article in Journal},
    }

2018

  • W. Akstaller, J. Kuypers, K. Kokkonen, R. Weigel, and A. Hagelauer, "Electrothermal modeling of TC SAW filter" in IEEE International Ultrasonics Symposium, Kobe, Japan, 2018. [Bibtex]
    @inproceedings{akstaller2018,
    author = {Akstaller, Wolfgang and Kuypers, Jan and Kokkonen, Kimmo and Weigel, Robert and Hagelauer, Amelie},
    language = {English},
    booktitle = {IEEE International Ultrasonics Symposium},
    cris = {https://cris.fau.de/converis/publicweb/publication/202248853},
    year = {2018},
    month = {10},
    day = {22},
    eventdate = {2018-10-22/2018-10-25},
    faupublication = {yes},
    peerreviewed = {Yes},
    title = {Electrothermal modeling of TC SAW filter},
    type = {Journal Article},
    venue = {Kobe, Japan},
    }
  • A. Hagelauer, W. Akstaller, C. Musolff, and R. Weigel, "X-Parameter Characterization of SAW and BAW Components - a Review" in Seventh International Symposium on Acoustic Wave Devices for Future Mobile Communication Systems, Chiba, Japan, 2018. [Bibtex]
    @inproceedings{hagelauer2018a,
    abstract = {
    This paper surveys X-Parameter based characterization
    of surface acoustic wave (SAW) and bulk acoustic wave
    (BAW) components. Due to the increased integration of frontend
    modules in mobile devices, the power density in BAW and SAW
    components rises continuously. Furthermore, the demand for
    more frequency bands is required by advanced communication
    techniques. As a result, the probability of significant nonlinear
    emissions disturbing adjacent channels increases. Thus, the
    linearity of individual frontend components becomes more and
    more important. In order to comply with spectral emission masks
    and limitations on spurious emissions imposed by standards
    and specifications, accurate modeling of the device’s response
    is required. In this paper, two measurement setups which
    are based on a nonlinear vector network analyzer (NVNA) are
    utilized in order to characterize BAW and SAW filters. A high
    dynamic range is required because of the low power levels of the
    generated higher order harmonics. Two different measurement
    setup approaches are compared to each other. The application
    of frequency selective attenuators enables an increase of the
    dynamic range by more than 40 dB.
    }, author = {Hagelauer, Amelie and Akstaller, Wolfgang and Musolff, Christian and Weigel, Robert}, language = {English}, booktitle = {Seventh International Symposium on Acoustic Wave Devices for Future Mobile Communication Systems}, cris = {https://cris.fau.de/converis/publicweb/publication/111006104}, year = {2018}, month = {03}, day = {07}, eventdate = {2018-03-06/2018-03-07}, faupublication = {yes}, peerreviewed = {No}, title = {X-Parameter Characterization of SAW and BAW Components - a Review}, type = {Konferenzschrift}, venue = {Chiba, Japan}, }
  • W. Akstaller, J. Kuypers, K. Kokkonen, R. Weigel, and A. Hagelauer, "Electro-thermal Modeling of TCSAW Filter" in 2018 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS), Kobe, Japan, 2018. [Bibtex]
    @inproceedings{akstaller2018a,
    author = {Akstaller, Wolfgang and Kuypers, Jan and Kokkonen, Kimmo and Weigel, Robert and Hagelauer, Amelie},
    publisher = {IEEE},
    booktitle = {2018 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)},
    cris = {https://cris.fau.de/converis/publicweb/publication/212499845},
    year = {2018},
    month = {01},
    day = {01},
    eventdate = {2018-10-22/2018-10-25},
    eventtitle = {IEEE International Ultrasonics Symposium (IUS)},
    faupublication = {yes},
    issn = {1948-5719},
    journaltitle = {IEEE International Ultrasonics Symposium},
    peerreviewed = {unknown},
    title = {Electro-thermal Modeling of TCSAW Filter},
    venue = {Kobe, Japan},
    }

2017

  • W. Akstaller, C. Musolff, R. Weigel, and A. Hagelauer, "X-Parameter Characterization of TC SAW Filters with Enhanced Dynamic Range", IEEE Transactions on Microwave Theory and Techniques, vol. 65, iss. 11, pp. 4541-4549, 2017. [DOI] [Bibtex]
    @article{akstaller2017,
    abstract = {Increasing the integration of radio frequency frontend modules for mobile communication devices results in rising power densities within the components. Additionally, advanced communication techniques demand for more frequency bands to be supported. As a result, the probability of significant nonlinear emissions disturbing adjacent channels increases, and accurate modeling of the device’s response is required. The X-parameter-based modeling approach can be applied to this problem. In this paper, a measurement setup, which is based on a nonlinear vector network analyzer, is utilized in order to characterize a surface acoustic wave (SAW) filter. Due to the low power levels of the generated higher order harmonics and the demand for a power sweep, a high dynamic range (DR) is required. The application of frequency selective attenuators enables an increase of the effective DR by more than 40 dB. Based on this improved measurement setup, single-tone and two-tone X-parameter models of the SAW filter are created and evaluated for their ability to predict intermodulation distortion (IMD). Classic, scalar IMD measurements are used as a reference for the assessment of capabilities and limitations of both X-parameter approaches.},
    author = {Akstaller, Wolfgang and Musolff, Christian and Weigel, Robert and Hagelauer, Amelie},
    language = {English},
    cris = {https://cris.fau.de/converis/publicweb/publication/109703704},
    year = {2017},
    month = {11},
    doi = {10.1109/TMTT.2017.2751464},
    faupublication = {yes},
    issn = {0018-9480},
    journaltitle = {IEEE Transactions on Microwave Theory and Techniques},
    keywords = {Attenuators;Frequency measurement;Harmonic analysis;Mathematical model;Power harmonic filters;Receivers;Surface acoustic waves;Intermodulation distortion (IMD);X-parameter;nonlinearity;surface acoustic wave (SAW) filter},
    number = {11},
    pages = {4541--4549},
    peerreviewed = {Yes},
    shortjournal = {IEEE T MICROW THEORY},
    title = {X-Parameter Characterization of TC SAW Filters with Enhanced Dynamic Range},
    type = {Article in Journal},
    volume = {65},
    }

2015

  • A. Hagelauer, W. Akstaller, A. Tag, and R. Weigel, "Characterization and Modeling of Nonlinearities in RF BAW Components for Mobile Communication" in Sixth International Symposium on Acoustic Wave Devices for Future Mobile Communication, Chiba, Japan, 2015, pp. 18-23. [Bibtex]
    @inproceedings{hagelauer2015,
    author = {Hagelauer, Amelie and Akstaller, Wolfgang and Tag, Andreas and Weigel, Robert},
    booktitle = {Sixth International Symposium on Acoustic Wave Devices for Future Mobile Communication},
    cris = {https://cris.fau.de/converis/publicweb/publication/119377324},
    year = {2015},
    month = {11},
    day = {24},
    eventdate = {2015-11-24/2015-11-25},
    faupublication = {yes},
    pages = {18--23},
    peerreviewed = {unknown},
    title = {Characterization and Modeling of Nonlinearities in RF BAW Components for Mobile Communication},
    venue = {Chiba, Japan},
    }
  • W. Akstaller, A. Tag, C. Musolff, R. Weigel, and A. Hagelauer, "Measurement Setup for X-Parameter Characterization of Bulk Acoustic Wave Resonators" in 85th Microwave Measurement Conference (ARFTG), Phoenix, AZ, USA, 2015, pp. 1-3. [DOI] [Bibtex]
    @inproceedings{akstaller2015,
    abstract = {In this work a modern measurement method has been utilized in order to characterize nonlinear behavior of bulk acoustic wave (BAW) solidly mounted resonators (SMR). Unlike typical nonlinearity characterization methods, the method which was employed here not only records amplitudes, but also the phase of generated harmonics. Furthermore, the relations between the harmonics of different order are given. The modeling approach being used is the poly harmonic distortion (PHD) modeling approach, realized by the measurement of X-Parameters. For that purpose it was necessary to extend a nonlinear vector network analyzer (NVNA) by external components in order to enable high power measurements. Afterwards, several optimization steps were required to perform phase calibration. This difficulty arose due to the high power incident tones and steep resonator impedance curves on the one hand and the limited power provided by the phase calibration standard on the other hand.},
    author = {Akstaller, Wolfgang and Tag, Andreas and Musolff, Christian and Weigel, Robert and Hagelauer, Amelie},
    publisher = {IEEE},
    booktitle = {85th Microwave Measurement Conference (ARFTG)},
    cris = {https://cris.fau.de/converis/publicweb/publication/108068004},
    year = {2015},
    month = {05},
    day = {22},
    doi = {10.1109/ARFTG.2015.7162919},
    eventdate = {2015-05-22/2015-05-22},
    faupublication = {yes},
    keywords = {X-Parameter; BAW},
    pages = {1--3},
    peerreviewed = {Yes},
    title = {Measurement Setup for X-Parameter Characterization of Bulk Acoustic Wave Resonators},
    venue = {Phoenix, AZ, USA},
    }
  • A. Tag, W. Akstaller, C. Musolff, B. Bader, M. Pitschi, R. Weigel, and A. Hagelauer, "Polyharmonic Distortion Modeling of RF BAW Components" in IEEE International Microwave Symposium, Phoenix, USA, 2015, pp. 1-3. [DOI] [Bibtex]
    @inproceedings{tag2015a,
    author = {Tag, Andreas and Akstaller, Wolfgang and Musolff, Christian and Bader, Bernhard and Pitschi, Maximilian and Weigel, Robert and Hagelauer, Amelie},
    publisher = {IEEE},
    booktitle = {IEEE International Microwave Symposium},
    cris = {https://cris.fau.de/converis/publicweb/publication/123888204},
    year = {2015},
    month = {05},
    day = {17},
    doi = {10.1109/MWSYM.2015.7166954},
    eventdate = {2015-05-17/2015-05-22},
    faupublication = {yes},
    pages = {1--3},
    peerreviewed = {Yes},
    title = {Polyharmonic Distortion Modeling of RF BAW Components},
    venue = {Phoenix, USA},
    }

COPYRIGHT NOTICE: Copyright and all rights of the material above are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by the appropriate copyright. The material may not be reposted without the explicit permission of the copyright holder.

COPYRIGHT NOTICE FOR IEEE PUBLICATIONS: © IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

COPYRIGHT NOTICE FOR EUMA PUBLICATIONS: © EUMA. Personal use of this material is permitted. Permission from European Microwave Association(EUMA) must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.