All Outputs (16)

Two-Dimensional Coupled Electrothermal Method Based on the Unstructured Transmission-Line Modelling Method for Lightning Protection Simulations (2024)
Journal Article
Yan, K., Vukovic, A., & Sewell, P. (2024). Two-Dimensional Coupled Electrothermal Method Based on the Unstructured Transmission-Line Modelling Method for Lightning Protection Simulations. IEEE Journal on Multiscale and Multiphysics Computational Techniques, 9, 208 - 217. https://doi.org/10.1109/jmmct.2024.3421958

This paper outlines a fully coupled electrothermal time-domain method to model the effects of lightning strikes and the formation of plasma. The plasma material is described by using the Drude model. This method predicts the formation of the discharg... Read More about Two-Dimensional Coupled Electrothermal Method Based on the Unstructured Transmission-Line Modelling Method for Lightning Protection Simulations.

Assessment of the Robustness of Flexible Antennas to Complex Deformations (2023)
Journal Article
Altinozen, E., Vukovic, A., & Sewell, P. (2023). Assessment of the Robustness of Flexible Antennas to Complex Deformations. IEEE Transactions on Antennas and Propagation, 71(6), 4714-4723. https://doi.org/10.1109/TAP.2023.3262671

Wearable antennas can suffer from a variety of mechanical deformations that are induced by the body dynamic. The paper analyses how these complex deformations impact the performance of a flexible antenna operating in the 5-6 GHz band. The Green Coord... Read More about Assessment of the Robustness of Flexible Antennas to Complex Deformations.

Holistic Analysis of Conformal Antennas using the Cylindrical TLM Method (2023)
Journal Article
Dimitrijevic, T., Vukovic, A., Atanaskovic, A., Jokovic, J., Sewell, P., & Doncov, N. (2023). Holistic Analysis of Conformal Antennas using the Cylindrical TLM Method. IEEE Transactions on Antennas and Propagation, 71(5), 4028-4035. https://doi.org/10.1109/tap.2023.3260633

The impact of deformations on wearable antenna performance has been analyzed both experimentally and computationally. However, the reported results have been inconsistent and often contradictory. This paper highlights how the choice of computational... Read More about Holistic Analysis of Conformal Antennas using the Cylindrical TLM Method.

Assessing the Impact of Twisting and Bending Deformations on Flexible Interconnect Performance (2022)
Journal Article
Altinozen, E., Vukovic, A., & Sewell, P. (2022). Assessing the Impact of Twisting and Bending Deformations on Flexible Interconnect Performance. IEEE journal on flexible electronics, https://doi.org/10.1109/jflex.2022.3232470

Flexible interconnects are essential components for signal transmission for foldable and wearable electronics. As such they are exposed to a variety of mechanical deformations that can degrade their electromagnetic performance. This paper analyses th... Read More about Assessing the Impact of Twisting and Bending Deformations on Flexible Interconnect Performance.

Two-Dimensional Thermal Diffusion Equation Solver Based on Unstructured Transmission-Line Modelling and Optimal Delaunay Triangular Meshes (2022)
Journal Article
Yan, K., Vukovic, A., Sewell, P., & Benson, T. M. (2022). Two-Dimensional Thermal Diffusion Equation Solver Based on Unstructured Transmission-Line Modelling and Optimal Delaunay Triangular Meshes. IEEE Journal on Multiscale and Multiphysics Computational Techniques, https://doi.org/10.1109/JMMCT.2022.3209071

The transmission-line modelling (TLM) method has been widely applied to many areas including electromagnetic and heat conduction problems. Its unstructured version, unstructured TLM (UTLM), however, has not hitherto been fully exploited in thermal di... Read More about Two-Dimensional Thermal Diffusion Equation Solver Based on Unstructured Transmission-Line Modelling and Optimal Delaunay Triangular Meshes.

A Complex Domain Mapping of the SCN for an Effective PML Implementation in TLM (2020)
Journal Article
Odeyemi, J. S., Vukovic, A., Benson, T. M., & Sewell, P. D. (2020). A Complex Domain Mapping of the SCN for an Effective PML Implementation in TLM. IEEE Open Journal of Antennas and Propagation, 1, 2637-6431. https://doi.org/10.1109/ojap.2020.2986293

An improved implementation of the perfectly matched layer (PML) is developed for the Transmission Line Modelling (TLM) method based on a mapping of the symmetrical condensed node (SCN) to an analytically extended geometric space. By mapping the TLM n... Read More about A Complex Domain Mapping of the SCN for an Effective PML Implementation in TLM.

Holistic appraisal of modeling installed antennas for aerospace applications (2018)
Journal Article
Vukovic, A., Sewell, P., & Benson, T. (2019). Holistic appraisal of modeling installed antennas for aerospace applications. IEEE Transactions on Antennas and Propagation, 67(3), 1396-1409. https://doi.org/10.1109/TAP.2018.2884769

This paper uses the Unstructured Transmission Line Modeling Method to investigate near field interactions between a broadband microwave antenna and a platform that arise as a result of antenna installation. The antenna, feed line and the platform are... Read More about Holistic appraisal of modeling installed antennas for aerospace applications.

Extracting modal field profiles from 3D unstructured transmission line modelling meshes for use as sources and observers (2017)
Journal Article

Large-scale three-dimensional (3D) electromagnetic simulations are commonly used as design and investigation tools in a wide variety of technological fields. It is not uncommon for both excitations and observation quantities to be expressed in terms... Read More about Extracting modal field profiles from 3D unstructured transmission line modelling meshes for use as sources and observers.

Installed antenna performance in airborne radomes of different profiles (2016)
Journal Article
Vukovic, A., Sewell, P., Meng, X., & Benson, T. M. (2016). Installed antenna performance in airborne radomes of different profiles. Applied Computational Electromagnetics Society Journal, 1(8),

In this paper, broadband interactions between an antenna and a radome are modelled using a full wave numerical solver. By accurately describing both the antenna and the radome geometry with a single numerical method, a comprehensive prediction of the... Read More about Installed antenna performance in airborne radomes of different profiles.

Extended Capability Models for Carbon Fiber Composite (CFC) Panels in the Unstructured Transmission Line Modeling (UTLM) Method (2016)
Journal Article
Meng, X., Vukovic, A., Benson, T. M., & Sewell, P. (2016). Extended Capability Models for Carbon Fiber Composite (CFC) Panels in the Unstructured Transmission Line Modeling (UTLM) Method. IEEE Transactions on Electromagnetic Compatibility, 58(3), 811-819. https://doi.org/10.1109/TEMC.2016.2531791

© 2016 IEEE. An effective model of single- and multilayered thin panels, including those formed using carbon fiber composite (CFC) materials, is incorporated into the transmission line modeling (TLM) method. The thin-panel model is a one-dimensional... Read More about Extended Capability Models for Carbon Fiber Composite (CFC) Panels in the Unstructured Transmission Line Modeling (UTLM) Method.

Localized single frequency lasing states in a finite parity-time symmetric resonator chain (2016)
Journal Article
Phang, S., Vukovic, A., Creagh, S. C., Sewell, P., Gradoni, G., & Benson, T. M. (2016). Localized single frequency lasing states in a finite parity-time symmetric resonator chain. Scientific Reports, 6, Article e20499. https://doi.org/10.1038/srep20499

In this paper a practical case of a finite periodic Parity Time chain made of resonant dielectric cylinders is considered. The paper analyzes a more general case where PT symmetry is achieved by modulating both the real and imaginary part of the mate... Read More about Localized single frequency lasing states in a finite parity-time symmetric resonator chain.

Parity-time symmetric coupled microresonators with a dispersive gain/loss (2015)
Journal Article
Phang, S., Vukovic, A., Creagh, S. C., Benson, T. M., Sewell, P. D., & Gradoni, G. (2015). Parity-time symmetric coupled microresonators with a dispersive gain/loss. Optics Express, 23(9), 11493-11507. https://doi.org/10.1364/oe.23.011493

The paper reports on the coupling of Parity-Time (PT)-symmetric whispering gallery resonators with realistic material and gain/loss models. Response of the PT system is analyzed for the case of low and high material and gain dispersion, and also for... Read More about Parity-time symmetric coupled microresonators with a dispersive gain/loss.

Modeling curved carbon fiber composite (CFC) structures in the transmission-line modeling (TLM) method (2015)
Journal Article

A new embedded model for curved thin panels is developed in the transmission line modeling (TLM) method. In this model, curved panels are first linearized and then embedded between adjacent 2-D TLM nodes allowing for arbitrary positioning between adj... Read More about Modeling curved carbon fiber composite (CFC) structures in the transmission-line modeling (TLM) method.

A versatile all-optical parity-time signal processing device using a Bragg grating induced using positive and negative Kerr-nonlinearity (2015)
Journal Article
Phang, S., Vukovic, A., Benson, T. M., Susanto, H., & Sewell, P. (2015). A versatile all-optical parity-time signal processing device using a Bragg grating induced using positive and negative Kerr-nonlinearity. Optical and Quantum Electronics, 47(1), https://doi.org/10.1007/s11082-014-0012-2

The properties of gratings with Kerr nonlinearity and PT symmetry are investigated in this paper. The impact of the gain and loss saturation on the response of the grating is analysed for different input intensities and gain/loss parameters. Potentia... Read More about A versatile all-optical parity-time signal processing device using a Bragg grating induced using positive and negative Kerr-nonlinearity.

Impact of dispersive and saturable gain/loss on bistability of nonlinear parity–time Bragg gratings (2014)
Journal Article
Phang, S., Vukovic, A., Susanto, H., Benson, T. M., & Sewell, P. (2014). Impact of dispersive and saturable gain/loss on bistability of nonlinear parity–time Bragg gratings. Optics Letters, 39(9), 2603-2606. https://doi.org/10.1364/ol.39.002603

We report on the impact of realistic gain and loss models on the bistable operation of nonlinear parity–time (PT) Bragg gratings. In our model we include both dispersive and saturable gain and show that levels of gain/loss saturation can have a signi... Read More about Impact of dispersive and saturable gain/loss on bistability of nonlinear parity–time Bragg gratings.

Ultrafast optical switching using parity-time symmetric Bragg gratings (2013)
Journal Article
Phang, S., Vukovic, A., Susanto, H., Benson, T. M., & Sewell, P. (2013). Ultrafast optical switching using parity-time symmetric Bragg gratings. Journal of the Optical Society of America B, 30(11), https://doi.org/10.1364/JOSAB.30.002984

This paper reports on time-domain modeling of an optical switch based on the parity–time (PT) symmetric Bragg grating. The switching response is triggered by suddenly switching on the gain in the Bragg grating to create a PT-symmetric Bragg grating.... Read More about Ultrafast optical switching using parity-time symmetric Bragg gratings.