NEMF21

Noisy Electromagnetic Fields – A Technological Platform for Chip-to-Chip

Communication in the 21st Century (NEMF21)

Gabriele Gradoni, Gregor Tanner, Stephen Creagh

Contributions & Collaborations from

the School of Mathematical Sciences, University of Nottingham,

United Kingdom

NEMF21

WP Leaders for:WP 2: Method and Software Evaluation (6 + 6)WP 6: Numerical propagation methods for noisy EM-field (15+15)WP10: Management (4)WP11: Dissemination and Exploitation (2)

Contributing: WP 8: C2C simulation toolbox based on n-point near-field measurements (9+9)WP 9 : C2C design guidelines – formulation and validation (6+6)

NEMF21

What we promised to do in terms of R&D …

T2.3: In-house TLM code, IMST and CST code applied to benchmarks;

T2.6: Data pool created as part of Data Management Programme;

T6.2: Propagation of EM field-field correlation functions using a Wigner function (WF) for solving flow equations, as well as transfer operator methods; T6.3 Deterministic models obtained from TLM calculation coupled with DFM matrices yielding a hybrid DFM-TLM method;

T8.2 From T6.2, T6.3, a combined WF-DFM-TLM solver with input form the n-point measurements (T4.2) will be set up and tested on data from IMST and NXP; interfaces with CST and IMST software will be created (?);

T9.1 UoN software packages will be validated against measurement data on C2C devices; design decisions for the antenna on chip architecture will be verified.

NEMF21

What we like to do …

• Develop method for propagating Wigner functions (WF) for EM fields in 3D in arbitrarily complex domains.

• Coupling WF propagator with TLM, FDTD codes as well as Random Matrix Theory (Random Coupling Method) – to include source radiation.

• Simulating sources? Testing commercial codes IMST and CST.

• Characterising near field effects and fluctuating sources.

• Combined analysis/design of sources and environments – efficient energy routing.

• Influence of noise, roughness, materials, and environment parameters, …

NEMF21

What we deliver …

Statistical properties of fields (average field strength, variance, higher moments) for a given source distribution and for specified degree of uncertainty (surface roughness, exterior noise etc) both in the near and far field: •Antenna distribution, radiation pattern•Energy routing feedback

Transfer operator formalism suitable for describing wavefront shaping – associated to efficient energy routing

Main challenge: source description, space-time domain boundaries

Limitations: needs to be modified to include deterministic/systematic interference effects (short orbits, proximity effects on antennas, etc…)

NEMF21

Collaborations:

Nice: Efficient energy routing.

TUM – Russer: Correlation function – exact vs ray tracing methods.

TUM – Nossek: 3D wireless routing -> how does this effect coding and signal processing; influence of noise (EMI, source, uncertainty) on data rates; impact of antenna design (MIMO).

NXP/ISAE: Source characterisation, source modelling.

IMST: Source modelling; hybrid FDTD – WF solver; working with EMPIRE.

CST: Source modelling; hybrid TLM – WF solver; working with CST – Studio.