Alistair Duffy

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The development and testing of automotive (sub)systems, particularly for Electromagnetic Compatibility (EMC) usually requires expensive test facilities. This paper describes the use of electromagnetic simulation to demonstrate the level of confidence that can be placed in measurements taken in more general laboratories, thus giving an estimate of the(More)
A 3D electromagnetic time domain model of a particle accelerator cavity was generated for the measurements of beam position using a patch antenna and (for comparison) a pickup by applying a signal at 3GHz. The variations in position from the central axis were modelled using CST Microwave Studio. The results demonstrated that the model can be applied to(More)
We present a technique for automated identification of the minimum acceptable mesh coarseness in electromagnetic (EM)-simulation models. Our approach is based on the projected evolution of feature selective validation (FSV) Global Difference Measure. It can be used to determine required EM model discretization levels for variable-fidelity EM-based(More)
Broadcasting is used in on-demand routing protocols to discover routes in Mobile Ad-hoc Networks (MANETs). On-demand routing protocols, such as AODV (Ad-hoc On-demand Distance Vector) routing, commonly employ pure flooding based broadcasting. However, pure flooding generates excessively redundant routing traffic that may lead to broadcast storm problem(More)
In this paper, the Transmission Line Matrix (TLM) method is used to study the electro-thermal performance degradation in RF LDMOS (Radio Frequency - Laterally Diffused Metal Oxide Semiconductor) transistors, through Thermal Cycling Test (TCT), as the temperature is a crucial parameter in RF devices. A hybrid approach is presented, which combines the(More)