The electromagnetic (EM) behavior of metasurfaces whose constitutive properties do not vary in time has been extensively studied and is relatively well understood. The demanding objectives of future communication, imaging and EM protection systems, however, call for the use of unconventional technologies that would overcome the physical bounds of standard time-invariant systems. A promising hardware technology to achieve the goals is identified in the concept of reconfigurable, intelligent space-time 4D metasurfaces whose EM properties can dynamically adapt in response to time-varying (TV) environments. Since the state-of-the-art EM computational methods do not allow their efficient analysis, the project will address the issue by developing fundamentally new analytical and numerical approaches, thereby providing key enablers for designing smart, adaptive 4D metasurfaces.

Keywords
computational electromagnetics; electromagnetic field theory; pulsed electromagnetic fields; time-domain analysis; reciprocity theorem

25-15862S

English

Štumpf Martin, doc. Ing., Ph.D. - principal person responsible
Bednarský Vojtěch, Ing. - fellow researcher
Doležal Tomáš, Ing. - fellow researcher
Kadlec Petr, doc. Ing., Ph.D. - fellow researcher

Department of Radio Electronics
- responsible department (11.3.2024 - not assigned)
Department of Radio Electronics
- beneficiary (1.1.2025 - 31.12.2027)

ŠTUMPF, M.; NORDEBO, S. Time-domain response bounds for linear time invariant systems with application to transmission line traveling waves. Scientific Reports, 2025, vol. 15, no. 1, p. 1-8.
Detail

ŠTUMPF, M.; ANTONINI, G.; LAGER, I.; EKMAN, J. Pulsed Electromagnetic Field Interaction With a Transmission Line: An Analytical Traveling-Wave Approach Based on Reciprocity. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2025, vol. 73, no. 6, p. 3783-3791. ISSN: 1558-2221.
Detail

ŠTUMPF, M.; ROMANO, D.; EKMAN, J.; ANTONINI, G. Time-Domain Computation of Partial Inductance Retarded Coefficients of Adjoining Brick Elements: A Cagniard-DeHoop Analytical Approach. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2025, vol. 73, no. 6, 12 p. ISSN: 0018-9480.
Detail

KADLEC, P.; MATTUCCI, E.; BEDNARSKÝ, V.; DOLEŽAL, T.; ŠTUMPF, M. Maximizing Shielding Effectiveness of Thin Time-Varying Dielectric Layer. In Proceedings of the International Symposium on Electromagnetic Compatibility EMC Europe. Institute of Electrical and Electronics Engineers Inc., 2025. p. 887-892. ISBN: 979-8-3315-9645-3.
Detail

ŠTUMPF, M.; KADLEC, P.; MATTUCCI, E.; ANTONINI, G.; EKMAN, J. Time-Domain Physical Bounds in the Worst-Case EMC Analysis: A Plane-Wave Shielding Case. In Proceedings of the 2025 International Symposium on Electromagnetic Compatibility (EMC Europe). Paris, France: IEEE, 2025. p. 1238-1241. ISBN: 979-8-3315-9644-6.
Detail

ŠTUMPF, M.; NORDEBO, S.; EKMAN, J.; ANTONINI, G. Time-Domain Physical Bounds on the Causal Response of Electromagnetic Systems: A Brief Summary of Recent Developments. In Proceedings 2025 URSI International Symposium on Electromagnetic Theory (EMTS 2025). Bologna, Italy: IEEE, 2025. p. 1-3. ISBN: 9798331512934.
Detail

ŠTUMPF, M.; ANTONINI, G.; EKMAN, J. Pulsed EM Plane-Wave Interaction With a Time-Varying Thin Sheet. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2025, vol. 73, no. 10, p. 8012-8021.
Detail

Responsibility: Štumpf Martin, doc. Ing., Ph.D.