Dr Matthias John

Matthias John

Research Fellow (Trinity College Dublin)

Ph.D. Microwave Antenna Engineering (Dublin Institute of Technology, Ireland)
Dipl.-Inf. (FH) in Telecommunications and Computer Science (University of Applied Science, Leipzig, Germany)

Contact

Room 410, Kevin Street Campus
Email: Email or Email
Tel: +353 (0)1 402 4716

Publications

[external]

About

Dr. Matthias John is a Research Fellow at the Antennas & High Frequency Research Centre. His research is funded by [external]CTVR - The Telecommunications Research Centre, Trinity College Dublin. He completed his PhD in November 2008. He joined the group in 2004, having received the Dipl.-Inf. (FH) degree in Telecommunications and Computer Science from the [external]Deutsche Telekom University of Applied Science Leipzig, Germany.
He has worked on on subjects including Ultra Wideband Antennas, Evolutionary Optimization Techniques and Antenna Miniaturization. The optimisation techniques he developed are employed in the AHFR centre to optimise antennas for applications in most research areas.

Matthias has implemented genetic algorithms and other advanced evolutionary optimisation algorithms for various computing architectures in Matlab and Perl programming languages. He has also helped to develop and setup the AHFR Laboratory’s manufacturing and measurement systems, IT infrastructure and this website.

Research Interests and Expertise

Gain Pattern

  • Computationally efficient multi-objective evolutionary optimisation [1].
  • Small-envelope ceramic surface mounted UWB antennas [2], [3], [4].
  • Antenna shapes based on Bézier Spline functions [5], [6].
  • Directional UWB antennas [7], [4], [8].
  • Genetic Algorithm Optimisation of wide-band printed monopoles and feed systems [9].
  • Optimisation and miniaturisation of multi-band and wide-band printed elements [10],[11].
  • Pattern reconfigurable antennas [12].
  • Design Principles of Antennas for Multi-band Reconfigurable Wireless Systems [13].

Awards

Professional Affiliations

  • Member of the [external]IEEE

References

  1. M. John, and M. J. Ammann,
    "Antenna Optimization With a Computationally Efficient Multiobjective Evolutionary Algorithm",
    IEEE Transactions on Antennas & Propagation, vol. 57, issue 1: Institute of Electronic & Electrical Engineers, pp. 260-263, 01/2009.
  2. D. Kearney, M. John, and M. J. Ammann,
    "Miniature Ceramic PIFA for UWB Band Group 3 & 6",
    IEEE Antennas and Wireless Propagation Letters, vol. 9, pp. 28-31, 01/2010.
  3. D. Kearney, M. John, and M. J. Ammann,
    "Miniature Ceramic Dual-PIFA Antenna to Support Band Group 1 UWB Functionality in Mobile Handset",
    IEEE Transactions on Antennas & Propagation, vol. 59, issue 1, pp. 336-339, 01/2011.
  4. D. Gaetano, M. J. Ammann, P. McEvoy, M. John, L. Keating, and F. Horgan,
    "A Conformal UWB Directional Antenna",
    European Conference on Antennas and Propagation - EuCAP, Rome, Italy, European Association on Antennas and Propagation, pp. 1113-1116, 11/04/2011.
  5. M. John, and M. J. Ammann,
    "Spline Based Geometry for Printed Monopole Antennas",
    Electronics Letters, vol. 43, issue 6: The Institution of Engineering and Technology, pp. 317-319, 03/2007.
  6. M. John, and M. J. Ammann,
    "Spline Based Geometry for Printed UWB Antenna Design",
    IEEE AP-S International Symposium on Antennas and Propagation, Honolulu, Hawai'i, USA, Institute of Electronic & Electrical Engineers, pp. 761-764, 10/06/2007.
  7. M. John, M. J. Ammann, and P. McEvoy,
    "UWB Vivaldi Antenna Based on a Spline Geometry with Frequency Band-Notch",
    IEEE AP-S International Symposium on Antennas and Propagation, San Diego, CA, USA, Institute of Electronic & Electrical Engineers, pp. Session 412, Paper 7, 05/07/2008.
  8. P. McEvoy, S. Curto, M. John, and M. J. Ammann,
    "Directive Ultra Wideband Antennas for Radar Applications in Wireless Sensor Networks",
    Royal Irish Academy Research Colloquium on Emerging Trends In Wireless Communications, Dublin, Ireland, Committee for Communications and Radio Science, Royal Irish Academy, pp. 103-105, 24/04/2008.
  9. M. John, and M. J. Ammann,
    "Wideband Printed Monopole Design Using a Genetic Algorithm",
    IEEE Antennas and Wireless Propagation Letters, vol. 6: Institute of Electronic & Electrical Engineers, pp. 447-449, 09/2007.
  10. M. John, J. A. Evans, M. J. Ammann, J. C. Modro, and Z. N. Chen,
    "Reduction of Groundplane-Dependent Effects on Microstrip-Fed Printed Rectangular Monopoles",
    IET Microwaves, Antennas & Propagation, vol. 2, issue 1: The Institution of Engineering and Technology, pp. 42-47, 02/2008.
  11. M. John, and M. J. Ammann,
    "Integrated Antenna for Multiband Multi-National Wireless Combined with GSM/800/PCS1900/IMT2000+Extension",
    Microwave and Optical Technology Letters, vol. 48, issue 3: John Wiley & Sons, pp. 613-615, 03/2006.
  12. M. John, and M. J. Ammann,
    "A Pattern Reconfigurable Slot Antenna with Hybrid Feed",
    European Conference on Antennas and Propagation - EuCAP, Barcelona, Spain, pp. We-35, 12/04/2010.
  13. M. John,
    "Study of Design Principles and Optimisation Techniques for Ultra-Wideband Printed Antennas",
    School of Electronic and Communications Engineering, Dublin, Ireland, Dublin Institute of Technology, pp. 149, 2008.