All Outputs (36)

Electromagnetic shielding effectiveness of fiber-reinforced composites: a preliminary study (2018)
Conference Proceeding
Munalli, D., Chronopoulos, D., & Greedy, S. (2018). Electromagnetic shielding effectiveness of fiber-reinforced composites: a preliminary study.

The use of Low power Radio Frequency (RF) based techniques as Non Destructive Testing (NDT) methods offers a potential solution for detecting defects and anomalies occurring in the structural integrity of composite based structures in real time, enab... Read More about Electromagnetic shielding effectiveness of fiber-reinforced composites: a preliminary study.

EMC-oriented multi-conductor equivalent circuit cable models for spice, including transfer impedance coupling and incident field excitation (2017)
Conference Proceeding
Smartt, C., Basford, M., Greedy, S., Thomas, D., & Sumner, M. (2017). EMC-oriented multi-conductor equivalent circuit cable models for spice, including transfer impedance coupling and incident field excitation. In Proceedings of the 2017 19th International Conference on Electromagnetics in Advanced Applications (1283-1287). https://doi.org/10.1109/ICEAA.2017.8065507

This paper describes the development and application of sophisticated multi-conductor cable bundle models for Spice simulation. The cable models developed include frequency dependent parameters, transfer impedance coupling and incident plane wave exc... Read More about EMC-oriented multi-conductor equivalent circuit cable models for spice, including transfer impedance coupling and incident field excitation.

Throughput analysis of full-duplex communication cognitive radio network (2017)
Journal Article
Lodro, M. M., Greedy, S., Mahoto, N. A., & Unar, M. A. (2017). Throughput analysis of full-duplex communication cognitive radio network. Wireless Personal Communications, 97(2), https://doi.org/10.1007/s11277-017-4662-9

In this paper we deal with the throughput of full-duplex cognitive communication radio which exploits unused band of primary user (PU) network. Classical cognitive radio uses half-duplex communication spectrum sensing to perform spectrum sensing and... Read More about Throughput analysis of full-duplex communication cognitive radio network.

Design and characterization of a diamond-shaped monopole antenna (2017)
Journal Article
Maricar, M. I., Bahar, A., Greedy, S., Smartt, C., Phang, S., Gradoni, G., …Thomas, D. W. P. (2017). Design and characterization of a diamond-shaped monopole antenna. Microwave and Optical Technology Letters, 59(10), 2695-2698. https://doi.org/10.1002/mop.30790

We report a new planar antenna design in the shape of a diamond. The performance of the antenna design is initially obtained through simulation, then fabricated, and its performance evaluated through experiment. Experimental characterization of the d... Read More about Design and characterization of a diamond-shaped monopole antenna.

Analysis of conducted emissions from an Electric Nacelle Anti-Ice power control system (2016)
Conference Proceeding
Nothofer, A., Tarisciotti, L., Zhou, Q., Benson, T. M., Greedy, S., & Christopoulos, C. (2016). Analysis of conducted emissions from an Electric Nacelle Anti-Ice power control system. In 2016 International Symposium on Electromagnetic Compatibility - EMC EUROPE. https://doi.org/10.1109/EMCEurope.2016.7739261

In this paper a high frequency model of the Electrical Nacelle Anti-Ice (ENAI) system is described for a typical aircraft application. The ENAI system, usually modelled only at the normal operating frequency, is modified in order to include a detaile... Read More about Analysis of conducted emissions from an Electric Nacelle Anti-Ice power control system.

3D inkjet-printed UV-curable inks for multi-functional electromagnetic applications (2016)
Journal Article
Saleh, E., Woolliams, P., Clarke, B., Gregory, A., Greedy, S., Smartt, C., …Tuck, C. (2017). 3D inkjet-printed UV-curable inks for multi-functional electromagnetic applications. Additive Manufacturing, 13, 143-148. https://doi.org/10.1016/j.addma.2016.10.002

Inkjet printing of multiple materials is usually processed in multiple steps due to various jetting and curing/sintering conditions. In this paper we report on the development of all inkjet-printed UV-curable electromagnetic responsive inks in a sing... Read More about 3D inkjet-printed UV-curable inks for multi-functional electromagnetic applications.

Time domain measurement of near field emissions from complex PCBs (2016)
Conference Proceeding
Thomas, D., Greedy, S., Smartt, C., Nasser, H., Baharuddin, M., Gradoni, G., …Tanner, G. (2016). Time domain measurement of near field emissions from complex PCBs. . https://doi.org/10.1109/EuMC.2016.7824441

This paper discusses how the measurements of the near-field emissions in the time domain can be used to characterize the broadband emissions from complex sources such as multifunctional Printed Circuit Boards (PCBs). The near- fields, transverse to t... Read More about Time domain measurement of near field emissions from complex PCBs.

Conducted emission evaluation for direct matrix converters (2016)
Conference Proceeding
Nothofer, A., Tarisciotti, L., Greedy, S., Empringham, L., De Lillo, L., & Degano, M. (2016). Conducted emission evaluation for direct matrix converters.

Matrix converters have been recently proposed as an alternative solution to the standard back-to-back converter in aerospace applications. However, Electromagnetic Interference (EMI), in particular, conducted emissions represent a critical aspect for... Read More about Conducted emission evaluation for direct matrix converters.

Open source cable models for EMI simulations (2016)
Conference Proceeding
Greedy, S., Smartt, C., & Thomas, D. W. (2016). Open source cable models for EMI simulations. In IEEE Electromagnetic Compatibility Magazine (69-81). https://doi.org/10.1109/AeroEMC.2016.7504590

This paper describes the progress of work towards an Open Source software toolset suitable for developing Spice based multi-conductor cable models. The issues related to creating a transmission line model for implementation in Spice which include the... Read More about Open source cable models for EMI simulations.

Loss mechanisms in high efficiency polymer solar cells (2015)
Journal Article
MacKenzie, R. C. I., Balderrama, V. S., Schmeisser, S., Stoof, R., Greedy, S., Pallarès, J., …von Hauff, E. (2016). Loss mechanisms in high efficiency polymer solar cells. Advanced Energy Materials, 6(4), 1-7. https://doi.org/10.1002/aenm.201501742

Performance losses and aging mechanisms are investigated in state‐of‐the‐art PTB7:PC70BM solar cells. Inverted devices incorporating a vanadium pentoxide (V2O5) top contact have efficiencies of 8%. After aging the unencapsulated devices, no changes a... Read More about Loss mechanisms in high efficiency polymer solar cells.

Characterisation of radiated fields from PCBs in the time domain (2015)
Conference Proceeding
Thomas, D., Smartt, C., & Greedy, S. (2015). Characterisation of radiated fields from PCBs in the time domain. In 2015 IEEE International Symposium on Electromagnetic Compatibility (EMC), 947-952. doi:10.1109/ISEMC.2015.7256293

In this paper, a method for representing electromagnetic emissions from a printed circuit board (PCB) using an equivalent dipole model deduced from time domain near-field scanning magnetic field measurements is proposed. The basic idea is to replace... Read More about Characterisation of radiated fields from PCBs in the time domain.

Theory of Stark spectroscopy transients from thin film organic semiconducting devices (2014)
Journal Article
MacKenzie, R. C. I., Göritz, A., Greedy, S., von Hauff, E., & Nelson, J. (2014). Theory of Stark spectroscopy transients from thin film organic semiconducting devices. Physical review B: Condensed matter and materials physics, 89, 1-9. https://doi.org/10.1103/physrevb.89.195307

Herein, we propose a model to describe picosecond-nanosecond charge separation and nongeminate recombination in organic semiconductors. The model is used to explain time-resolved electroabsorption (EA) measurements performed on diodes made from pheny... Read More about Theory of Stark spectroscopy transients from thin film organic semiconducting devices.

Complex locations of equivalent dipoles for improved characterization of radiated emissions (2014)
Journal Article
Obiekezie, C., Thomas, D. W., Nothofer, A., Greedy, S., Arnaut, L. R., & Sewell, P. (2014). Complex locations of equivalent dipoles for improved characterization of radiated emissions. IEEE Transactions on Electromagnetic Compatibility, 56(5), 1087-1094. https://doi.org/10.1109/TEMC.2014.2313406

© 2014 IEEE. The positioning of electromagnetic (EM) sources on the complex plane, though a mathematical construct, is often applied in solving EM problems with directive confined (collimated) propagation characteristics. Equivalent dipole modeling,... Read More about Complex locations of equivalent dipoles for improved characterization of radiated emissions.

A novel photonic crystal band-pass filter using degenerate modes of a point-defect microcavity for terahertz communication systems (2014)
Journal Article
Chun-Ping, C., Anada, T., Greedy, S., Benson, T. M., & Sewell, P. (2014). A novel photonic crystal band-pass filter using degenerate modes of a point-defect microcavity for terahertz communication systems. Microwave and Optical Technology Letters, 56(4), 792-797. https://doi.org/10.1002/mop.28204

Compact devices are important for the realization of terahertz communications systems. This article proposes a novel photonic crystal-based device for realizing microminiature, high-selectivity high Q band-pass filters (BPF) and the design of a dual-... Read More about A novel photonic crystal band-pass filter using degenerate modes of a point-defect microcavity for terahertz communication systems.

A small temperature rise may contribute towards the apparent induction by microwaves of heatshock gene expression in the nematode Caenorhabditis elegans (2006)
Journal Article
Dawe, A. S., Smith, B., Thomas, D. W., Greedy, S., Vasic, N., Gregory, A., …de Pomerai, D. I. (2006). A small temperature rise may contribute towards the apparent induction by microwaves of heatshock gene expression in the nematode Caenorhabditis elegans. Bioelectromagnetics, 27(2), https://doi.org/10.1002/bem.20192

We have previously reported that low-intensity microwave exposure (0.75-1.0 GHz CW at 0.5 W; SAR 4-40 mW kg-1) can induce an apparently non-thermal heat-shock response in Caenorhabditis elegans worms carrying hsp16-1::reporter genes. Using matched co... Read More about A small temperature rise may contribute towards the apparent induction by microwaves of heatshock gene expression in the nematode Caenorhabditis elegans.

Analysis of a near field MIMO wireless channel using 5.6 GHz dipole antennas
Conference Proceeding
Maricar, M. I., Gradoni, G., Greedy, S., Ivrlac, M. T., Nossek, J. A., Phang, S., …Thomas, D. W. (in press). Analysis of a near field MIMO wireless channel using 5.6 GHz dipole antennas.

Understanding the impact of interference upon the performance of a multiple input multiple output (MIMO) based device is of paramount importance in ensuring a design is both resilient and robust. In this work the effect of element-element interferenc... Read More about Analysis of a near field MIMO wireless channel using 5.6 GHz dipole antennas.