Series of Electrically Small Antenna Workshops

I. Lund Symposium on Stored Energy

(September 19-23, 2016, Lund, Sweden)

Participants (A-Z order)

Casimir Ehrenborg
Mats Gustafsson (organizer)
Lukas Jelinek
Kurt Schab
Doruk Tayli
Guy Vandenbosch

Topics: stored energy, recoverable energy.

See the result of the workshop: Schab, K., Jelinek, L., Capek, M., Ehrenborg, C., Tayli, D., Vandenbosch, G.A.E., Gustafsson, M.: Energy Stored by Radiating Systems, IEEE Access, Vol. 6, pp. 10553-10568, 2018. 10.1109/ACCESS.2018.2807922. [Online]: https://arxiv.org/abs/1705.07942

II. Prague Springtime Optimization Meeting (PrSO)

(March 15-17, 2017, Prague, Czech Republic)

Participants (A-Z order)

Topics: optimal currents, optimal antennas.

III. Stockholm Archipelago Antenna and Current Optimization Workshop (SAACOW)

(September 7-9, 2017, Stockholm, Sweden)

Participants (A-Z order)

Topics: optimal planar structures.

Further materials:

IV. Meeting on Optimization Plasmonics and Energy in Leuven (MOOPEL)

(August 20-23, 2018, Leuven, Belgium)

Participants (A-Z order)

Miloslav Capek
Casimir Ehrenborg
Mats Gustafsson
Lukas Jelinek
Lars Jonsson
Sven Nordebo
Kurt Schab
Guy Vandenbosch (organizer)
Xuezhi Zheng (organizer)

Topics: plasmonics, stored energy and bounds for volumetric bodies.

Further materials:

1. (Mo) Guy A. E. Vandenbosch: General About Plasmonics, Part 1 – Introduction
2. (Mo) Guy A. E. Vandenbosch: General About Plasmonics, Part 1 – Applications
3. (Mo) Xuezhi Zheng: State of the Art Computational Methods for Plasmonics
4. (Mo) Kurt Schab: Material Properties of Plasmonics
5. (Tue) Sven Nordebo: On the Optimal Plasmonic Resonances in Lossy Media
6. (Tue) Casimir Ehrenborg: Q-Factor for Dispersive Structures
7. (Tue) Lars Jonsson: Q-Factor in Scattering
8. (Wed) Mats Gustafsson: FFT for Volumetric Method of Moments
9. (Wed) Miloslav Capek: Utilization of Matrix Operators in Small Antenna Theory

V. Workshop on Antennas, Spheres and Pi in Lund (WASPL)

(March 27-29, 2019, Lund, Sweden)

Participants (A-Z order)

Vit Losenicky
Sven Nordebo
Kurt Schab
Guy Vandenbosch
Xuezhi Zheng

Topics: plasmonics, volumetric method of moments, Purcell’s factor.

Also (heavily) discussed:

1. Characteristic modes of two spheres.
2. Existence of Pi constant outside Euclidean geometry.
3. Electrical current.

VI. Bratrice Optimal Optics Meeting (BOOM)

(September 3-6, 2019, Bratrice, Czech Republic)

Participants (A-Z order)

Topics: plasmonics, scattering, topology senstivity, Purcell’s factor, scattering and cross sections bounds.

See the results of the workshop: Gustafsson, M., Schab, K., Jelinek, L., Capek, M.: Upper bounds on absorption and scattering, New Journal of Physics, Vol. 22, pp. 1-25, July 2020. [Online]
and Jelinek, L., Gustafsson, M., Capek, M., Schab, K.: Fundamental Bounds on the Performance of Monochromatic Passive Cloaks, Optics Express, Vol. 29, No. 15, pp. 24068-24082, 2021 [Online].

VII. Summit: Bounds on Realizable Antennas and Materials Based on Optimization Routines and Matrix Implementations (S-BRAMBORaMI)

(April 21-24, 2022, Bratrice, Czech Republic)

Participants (A-Z order)

Topics: Evaluation of characteristic modes via FDTD and FEM, time-domain characteristic modes, the sensitivity of fundamental bounds.

See the result of the workshop: Capek, M., Lundgren, J., Gustafsson, M., Schab, K., Jelinek, L.: Characteristic Mode Decomposition Using the Scattering Dyadic in Arbitrary Full-Wave Solvers, IEEE Transactions on Antennas and Propagation, Vol. 71, No. 1, pp. 830-839, January 2023., arxiv. [Online]

VIII. Nederland’s Optimization Gathering on Antennas and Photonics (NoGAP)

(July 15-19, 2022, Nederland, Colorado, United States)

Participants (A-Z order)

Topics: Substructure characteristic modes, iterative solvers for CMA, quantum systems and CMA, cloaking (general excitation),

See the result of the workshop: Lundgren, J., Schab, K., Capek, M., Gustafsson, M., Jelinek, L.: Iterative Calculation of Characteristic Modes Using Arbitrary Full-wave Solvers, IEEE Antennas and Wireless Propagation Letters, Vol. 22, No. 4, pp. 799-803, April 2023.

IX. Pulse Optimization Theory and Techniques In Sweden (POTaTISen)

(May 5-8, 2023, Arild, Sweden)

Participants (A-Z order)

Topics: Substructure characteristic modes, bounds on optical forces, analog computers.

X. Symposium on Multi-objective Optimization Routines for the Synthesis of Electromagnetic Structures (SMORES)

(June 28-31, 2023, Welches, Oregon, United States)

Participants (A-Z order)

Topics: Fundamental bounds in time domain, frequency spectrum, and periodic environment. Enhanced fluorescence, substructure CMA (with losses), etc..

See the result of the workshop: Gustafsson, M., Jelinek, L., Capek, M., Lundgren, J., Schab, K.: Theory and Computation of Substructure Characteristic Modes, IEEE Transactions on Antennas and Propagation, Vol. 73, No. 3, pp. 1321-1333, March 2025.

XI. Symposium on Characteristic modes, Optimization, Transition matrix Techniques, and Interpolation of Scattering Heuristics (SCOTTISH)

(March 14-17, 2024, Edinburgh, Scotland, UK)

Participants (A-Z order)

Topics: Iterative solution of generalized eigenvalue decomposition, spectral fitting, multi-state optimization, degrees of freedom, etc.

(A part of the workshop was a visit of Maxwell’s family house.)

See the result of the workshop: Jelinek, L. Schab, K., Hruska, V., Capek, M., Gustafsson, M.: Characteristic Mode Analysis of Acoustic Scatterers, Journal of Sound and Vibration, Vol. 618, Part A, 119361, pp. 1-14, 2025.

XII. Sensitivity Metrics for Realizable Directivity Insights (SMRDÍ)

(April 24-26, 2026, Howth, Ireland)

Participants (A-Z order)

Topics: Analytic synthesis of optimal absorbers, upper bounds on magnetic polarizability, sensitivity metrics and surface roughness, structural modes for regularization and representation in topology optimization, etc.

See the result of the workshop: TBA soon

XIII. To be announced soon (xxxx)

(xxxxx)

Participants (A-Z order)

Topics: TBA.

See the result of the workshop: TBA soon

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/Edited 23. 02. 2024, Miloslav Capek/