Dr. Stumpf Martin
Lerch Laboratory of EM Research, Brno University of Technology, Brno, Jihomoravský Kraj, Czech Republic
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Academic Career Length
18Years (2009-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications18 February 2009 in IEEE Transactions on Electromagnetic Compatibility
Journal Article
Stumpf MartinMLMarco Leone
Marco Leone
A 2-D contour integral-equation method for the frequency-domain analysis of arbitrarily shaped power bus structures is presented. The numerically efficient approach allows the rapid and accurate computation of the frequency-dependent transfer parameters between an arbitrary number of ports, as required for embedding the power plane structure into network simulation. A formulation is developed for calculating the voltage distribution between the planes, as well as for determining the resulting radiated fields based on the field-equivalence principle. The method is applied for several test boards including a populated board with a surface-mount decoupling-capacitor network. The suggested approach is well confirmed by an analytical solution for the rectangular structure, by measurement and 3-D full-wave simulation results.
25 January 2013 in IEEE Transactions on Antennas and Propagation
Journal Article
Stumpf MartinAHAdrianus T. De Hoop
Adrianus T. De Hoop
GVGuy A. E. Vandenbosch
Guy A. E. Vandenbosch
Generalized-ray theory for time-domain electromagnetic fields in a horizontally layered medium is developed. It can be considered as the time-domain equivalent of the intensively studied Green's function formulation in frequency domain. After introducing appropriate integral transformations and source-type field representations, the solution is written out in terms of generalized ray constituents whose space-time counterparts are constructed with the aid of the Cagniard–DeHoop technique. The formulation lays the foundation to rigorously study time-domain field behavior in numerous practical topologies where a stratified multilayer is involved, such as planar antennas and circuits, but also electromagnetic compatibility (EMC) and propagation problems. Illustrative numerical results are presented.
9 June 2011 in IEEE Transactions on Antennas and Propagation
Journal Article
Analytic time-domain expressions are derived for the pulsed electromagnetic field radiated by a wide slot antenna with a dielectric layer in a two-dimensional model configuration. In any finite time window of observation, exact pulse shapes for the propagated, reflected and refracted wave constituents are constructed with the aid of the modified Cagniard method (the Cagniard-DeHoop method). Numerical results are presented for field pulse shapes at the dielectric/free-space interface, the pulse time widths of the excitation being chosen such that the separate arrivals from the two edges of the slot can be distinguished. Applications are found in any system whose operation is based on pulsed electromagnetic field transfer and where digital signals are detected and interpreted in dependence on their pulse shapes.
28 January 2019 in IEEE Transactions on Electromagnetic Compatibility
Journal Article
Stumpf Martin
Giulio AntoniniSpace-time closed-form expressions for the vertical-electric-dipole-induced Thévenin-voltage responses on a transmission line above a lossy ground are derived analytically. The problem is formulated via the electromagnetic reciprocity theorem of the time-convolution type and subsequently solved with the aid of the Cooray–Rubinstein formula and the Cagniard–de Hoop method. It is demonstrated that the obtained results are readily applicable to calculating lightning-induced voltages on overhead transmission lines over a finitely conducting ground.
30 October 2018 in IEEE Transactions on Electromagnetic Compatibility
Journal Article
PKPetr Kadlec
Petr KadlecMMMartin Marek
Martin MarekStumpf MartinVSVladimir Sedenka
Vladimir SedenkaThe decoupling of modern printed circuit boards introduces a very complex task. Powerful stochastic optimizers are usually used to determine values and positions of decoupling capacitors on the board. The number of capacitors used has to be determined a priori by the user which brings problems with convergence of the optimization process or can lead to a waste of resources when the noises are to be attenuated to a certain level. In this paper, an approach based on the combination of time-domain contour integral method and optimization with variable number of dimensions is introduced. The optimizer works with models having variable dimensions and searches for the optimal one. The approach is tested on two example power circuit boards with various noise attenuation limits and constraints on capacitor positions and values.
7 April 2023 in IEEE Transactions on Antennas and Propagation
Journal Article
An analytical approach to the analysis of electromagnetic (EM) reflection and transmission of a plane wave at a time-varying, high-dielectric thin layer is described. Closed-form expressions for the TD reflection and transmission coefficients are derived and successfully validated using an equivalent circuit representation. The cases of the constant-to-linearly-increasing and harmonic temporal profiles are analyzed in detail. Illustrative numerical examples demonstrating the pulse shapes of the temporally modulated EM fields are presented.
About Me
Martin Stumpf (Senior Member, IEEE) received the Ph.D. degree in electrical engineering from the Brno University of Technology (BUT), Brno, The Czech Republic, in 2011. After his Ph.D. research, he spent a year and a half as a Postdoctoral Fellow with KU Leuven, Leuven, Belgium. He is currently an Associate Professor of theoretical electrical engineering with the Lerch Laboratory of EM Research, BUT, and a Guest Researcher with the EISLAB of Luleå University of Technology, Luleå, Sweden. During a three-month period in 2018, he was a Visiting Professor with the UAq EMC Laboratory, University of L'Aquila, L'Aquila, Italy. In 2025, he was awarded a Fulbright Scholarship to spend his 2025/2026 sabbatical leave at the National Institute of Standards and Technology (NIST), Boulder, CO, USA.
He has authored the books Electromagnetic Reciprocity in Antenna Theory (Wiley–IEEE Press, 2017), Pulsed EM Field Computation in Planar Circuits: The Contour Integral Method (CRC Press, 2018), Time-Domain Electromagnetic Reciprocity in Antenna Modeling (Wiley–IEEE Press, 2019), and Metasurface Electromagnetics: The Cagniard–DeHoop Time-Domain Approach (IET, 2022).
His main research interests include modeling of electromagnetic wave phenomena with an emphasis on EMC and antenna engineering. He is the originator of the Cagniard-deHoop method of moments, a time-domain integral-equation technique for the efficient analysis of transient scattering and raditation phenomena.
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