Calibration model for detection of potential demodulating behaviour in biological media exposed to RF energy (2017)
Journal Article
See, C. H., Abd-Alhameed, R. A., Ghani, A., Ali, N. T., Excell, P. S., McEwan, N. J., & Balzano, Q. (2017). Calibration model for detection of potential demodulating behaviour in biological media exposed to RF energy. IET Science, Measurements and Technology, 11(7), 900-906. https://doi.org/10.1049/iet-smt.2017.0105

Potential demodulating ability in biological tissue exposed to radio-frequency (RF) signals intrinsically requires an unsymmetrical diode-like non-linear response in tissue samples. This may be investigated by observing possible generation of the sec... Read More about Calibration model for detection of potential demodulating behaviour in biological media exposed to RF energy.

Current technologies and location based services (2017)
Presentation / Conference Contribution
Ahmad, I., Asif, R., Abd-Alhameed, R., Alhassan, H., Elmegri, F., Noras, J., See, C., Obidat, H., Shuaieb, W., Riberio, J., Hameed, K., Alabdullah, A., Ali, A., Bin Melha, M., Al Khambashi, M., Migdadi, H., Child, M., Al-Sadoon, M., Abdussalam, F., Dunjuma, I., …Jones, S. (2017, September). Current technologies and location based services. Presented at 2017 Internet Technologies and Applications (ITA), Wrexham

This paper examines the benefits and drawbacks of these services, reviewing differences in infrastructure, power requirements, sensing devices, and other factors. Technologies covered include Radio Frequency Identification, GSM, GPS, A-GPS, Smart Ant... Read More about Current technologies and location based services.

Near-zero-index wires. (2017)
Journal Article
La Spada, L., & Vegni, L. (2017). Near-zero-index wires. Optics express, 25(20), 23699-23708. https://doi.org/10.1364/oe.25.023699

In this work, near-zero-index material boundary properties have been exploited to achieve new electromagnetic functionalities. The extraordinary guiding properties of a cylindrical dielectric rod waveguide surrounded by a thin epsilon-mu-near-zero sh... Read More about Near-zero-index wires..

Modeling and design for electromagnetic surface wave devices (2017)
Journal Article
La Spada, L., Haq, S., & Hao, Y. (2017). Modeling and design for electromagnetic surface wave devices. Radio Science, 52(9), 1049-1057. https://doi.org/10.1002/2017rs006379

A great deal of interest has reemerged recently in the study of surface waves. The possibility to control and manipulate electromagnetic wave propagations at will opens many new research areas and leads to lots of novel applications in engineering. I... Read More about Modeling and design for electromagnetic surface wave devices.

Comparison of Electromagnetic Performance of 10-MW Superconducting Generators With Different Topologies for Offshore Direct-Drive Wind Turbines (2017)
Journal Article
Guan, Y., Zhu, Z. Q., Azar, Z., Thomas, A. S., Vedreño-Santos, F., Li, G.-J., & Odavic, M. (2017). Comparison of Electromagnetic Performance of 10-MW Superconducting Generators With Different Topologies for Offshore Direct-Drive Wind Turbines. IEEE Transactions on Applied Superconductivity, 27(7), 1-11. https://doi.org/10.1109/tasc.2017.2732289

This paper compares the electromagnetic performance of 10MW superconducting (SC) generators with three different topologies, i.e., iron-cored stator and rotor (ISIRT), iron-cored stator and air-cored rotor (ISART), and air-cored stator and rotor (ASA... Read More about Comparison of Electromagnetic Performance of 10-MW Superconducting Generators With Different Topologies for Offshore Direct-Drive Wind Turbines.

Cellulose microfibrils as a pore former in electroless co-deposited anodes for solid oxide fuel cells. (2017)
Presentation / Conference Contribution
Turnbull, R. J., Shearer, N., & Wilson, C. (2017, July). Cellulose microfibrils as a pore former in electroless co-deposited anodes for solid oxide fuel cells. Presented at 15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV), Hollywood, Florida, US

A study was conducted to investigate the feasibility of Cellulose Microfibrils (CMF) as a pore former in the manufacture of Solid Oxide Fuel Cell (SOFC) anodes using Electroless Co-Deposition (ECD). Previous work into the use of ECD to produce SOFC a... Read More about Cellulose microfibrils as a pore former in electroless co-deposited anodes for solid oxide fuel cells..

Direct flux control – sensorless control method of PMSM for all speeds – basics and constraints (2017)
Journal Article
Müller, T., See, C. H., Ghani, A., Bati, A., & Thiemann, P. (2017). Direct flux control – sensorless control method of PMSM for all speeds – basics and constraints. Electronics Letters, 53(16), 1110-1111. https://doi.org/10.1049/el.2017.1772

The limitations of sensorless control of permanent magnet synchronous machines (PMSMs) are discussed and a viable solution is proposed. The main concept of sensorless control of drives relies on additional information given by the machine during its... Read More about Direct flux control – sensorless control method of PMSM for all speeds – basics and constraints.

Link Budget Maximization for a Mobile-Band Subsurface Wireless Sensor in Challenging Water Utility Environments (2017)
Journal Article
See, C. H., Abd-Alhameed, R. A., Atojoko, A. A., McEwan, N. J., & Excell, P. S. (2018). Link Budget Maximization for a Mobile-Band Subsurface Wireless Sensor in Challenging Water Utility Environments. IEEE Transactions on Industrial Electronics, 65(1), 616-625. https://doi.org/10.1109/tie.2017.2719602

A subsurface chamber transceiver system and associated propagation channel link budget considerations for an underground wireless sensor system (UWSS) are presented: the application was a sewerage system for a water utility company. The UWSS operates... Read More about Link Budget Maximization for a Mobile-Band Subsurface Wireless Sensor in Challenging Water Utility Environments.

Miniaturized Balanced Antenna with Integrated Balun for Practical LTE Applications (2017)
Journal Article
Elfergani, I. T. E., Rodriguez, J., Abdussalam, F. M., See, C. H., & Abd-Alhameed, R. A. (2017). Miniaturized Balanced Antenna with Integrated Balun for Practical LTE Applications. Radioengineering, 26(2), 444-452. https://doi.org/10.13164/re.2017.0444

A design of dual-band balanced antenna structure operating in the 700 and 2600MHz LTE bands is studied and investigated. The overall dimensions of the radiator are 50 × 18 × 7 mm3 allowing it to be easily concealed within mobile handsets. A broad-ban... Read More about Miniaturized Balanced Antenna with Integrated Balun for Practical LTE Applications.

Tailoring of electromagnetic waves by metasurfaces (2017)
Presentation / Conference Contribution
Spada, L. L., & Hao, Y. (2017, March). Tailoring of electromagnetic waves by metasurfaces. Presented at 2017 11th European Conference on Antennas and Propagation (EUCAP), Paris, France

In the last few years, non-homogeneous metasurfaces captured huge interest in tailoring electromagnetic waves, ranging from microwave to optical frequencies. Several technologies have been proposed, but a general design approach is still missing: the... Read More about Tailoring of electromagnetic waves by metasurfaces.

Methods for differential protection of Scott transformers (2017)
Journal Article
Sorrentino, E., Gupta, N., & Oliveros, E. (2017). Methods for differential protection of Scott transformers. Electric Power Systems Research, 147, 55-61. https://doi.org/10.1016/j.epsr.2017.02.018

This article describes different methods for the differential protection of Scott transformers, which are based on: (a) single-phase relays, (b) 3-phase relays for two-winding transformers, (c) 3-phase relays for multi-winding transformers, (d) speci... Read More about Methods for differential protection of Scott transformers.

An Active Microwave Sensor for Near Field Imaging (2017)
Journal Article
Mirza, A. F., See, C. H., Danjuma, I. M., Asif, R., Abd-Alhameed, R. A., Noras, J. M., Clarke, R. W., & Excell, P. S. (2017). An Active Microwave Sensor for Near Field Imaging. IEEE Sensors Journal, 17(9), 2749-2757. https://doi.org/10.1109/jsen.2017.2673961

Near field imaging using microwaves in medical applications is of great current interest for its capability and accuracy in identifying features of interest, in comparison with other known screening tools. This paper documents microwave imaging exper... Read More about An Active Microwave Sensor for Near Field Imaging.

Surface wave manipulation based on transformation optics: From design to manufacturing (2017)
Presentation / Conference Contribution
La Spada, L., & Hao, Y. (2016, October). Surface wave manipulation based on transformation optics: From design to manufacturing. Presented at 2016 International Symposium on Antennas and Propagation (ISAP), Okinawa, Japan

In the last few years, much interest has grown in the control and manipulation of electromagnetic surface waves. The aim of this paper is to present a new design and manufacturing approach based on Transformation Optics. To validate the proposed desi... Read More about Surface wave manipulation based on transformation optics: From design to manufacturing.

Mathematical Model for Calibration of Potential Detection of Nonlinear Responses in Biological Media Exposed to RF Energy (2017)
Journal Article
See, C. H., Abd-Alhameed, R. A., Mirza, A. F., McEwan, N. J., Excell, P. S., & Balzano, Q. (2017). Mathematical Model for Calibration of Potential Detection of Nonlinear Responses in Biological Media Exposed to RF Energy. The Applied Computational Electromagnetics Society Journal, 32(1), 1-7

An efficient way to test for potential unsymmetrical nonlinear responses in biological tissue samples exposed to a microwave signal is to observe the second harmonic in a cavity resonant at the two frequencies, with collocated antinodes. Such a respo... Read More about Mathematical Model for Calibration of Potential Detection of Nonlinear Responses in Biological Media Exposed to RF Energy.

A Comparative Study of Methods for Modelling the Structural Stiffness of Generator Components (2016)
Presentation / Conference Contribution
Jaen-Sola, P., & Mcdonald, A. (2016, April). A Comparative Study of Methods for Modelling the Structural Stiffness of Generator Components. Presented at 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016), Glasgow, UK

Direct-drive generators are low speed electrical machines requiring robust and large supporting structures designed to resist the significant loads present during assembly and operation. Generator structures have to be stiff, especially in the radial... Read More about A Comparative Study of Methods for Modelling the Structural Stiffness of Generator Components.

Conical beam monopole antenna design for Chinese area positioning system (2016)
Journal Article
Pang, F., Ai, G., Yin, J., Ma, Y., Hu, C., Cui, J., Ma, L., See, C. H., & Abd-Alhameed, R. A. (2016). Conical beam monopole antenna design for Chinese area positioning system. Progress in Electromagnetics Research C: PIER C, 68, 193-200. https://doi.org/10.2528/pierc16083005

This article describes the operational principle of the satellite-based Chinese Area Positioning System (CAPS) and proposes a monopole antenna for a large anchored buoy platform in harsh marine environment. The proposed antenna is highly omnidirectio... Read More about Conical beam monopole antenna design for Chinese area positioning system.

Comparison of Peak Armature and Field Winding Currents for Different Topologies of 10-MW Superconducting Generators Under Short-Circuit Conditions (2016)
Journal Article
Guan, Y., Vedreno-Santos, F., Li, G. J., Azar, Z., Thomas, A. S., Li, G.-J., Odavic, M., & Zhu, Z. Q. (2016). Comparison of Peak Armature and Field Winding Currents for Different Topologies of 10-MW Superconducting Generators Under Short-Circuit Conditions. IEEE Transactions on Applied Superconductivity, 26(8), 1-7. https://doi.org/10.1109/tasc.2016.2615077

This paper studies the peak armature and peak field winding currents for three different topologies of 10 MW partial High Temperature Superconducting Generators (HTSGs) under Short-Circuit Conditions (SCC) by simulation. The investigated partial HTSG... Read More about Comparison of Peak Armature and Field Winding Currents for Different Topologies of 10-MW Superconducting Generators Under Short-Circuit Conditions.

Microwave devices for controlling surface waves (2016)
Presentation / Conference Contribution
La Spada, L., & Hao, Y. (2016, August). Microwave devices for controlling surface waves. Presented at 2016 URSI International Symposium on Electromagnetic Theory (EMTS), Espoo, Finland

In the last few years, great interest grown up in the control and manipulation of electromagnetic surface wave. The aim of this paper is to present a novel approach to design new devices able to manipulate them. To validate the proposed design, two s... Read More about Microwave devices for controlling surface waves.

A compact and broadband balun design for LTE applications (2016)
Journal Article
Elfergani, I. T. E., Hussaini, A. S., Rodriguez, J., Ali, A. H., See, C. H., & Abd-Alhameed, R. A. (2016). A compact and broadband balun design for LTE applications. Progress in electromagnetics research B: PIER B, 67, 85-95. https://doi.org/10.2528/pierc16071805

In this paper, a compact wideband planar balun is studied and investigated. The proposed balun comprises a broadband Wilkinson divider followed by non-coupled lines to attain wideband 180° phase shift. Due to the inherent broadband characteristics of... Read More about A compact and broadband balun design for LTE applications.

Quad-Ridge Flared Horn feed design for Radio telescope receiver system Using a Genetic Algorithm (2016)
Presentation / Conference Contribution
Ma, Y., Yu, J., Pang, F., & See, C. H. (2016, August). Quad-Ridge Flared Horn feed design for Radio telescope receiver system Using a Genetic Algorithm. Presented at URSI Asia-Pacific Radio Science Conference, Seoul, Korea

Future broadband radio telescopes require broadband feeds for reflector antennas, and many new broadband feed technologies have gained substantial progress to satisfy the touch specifications for future radio telescope projects, such as the square ki... Read More about Quad-Ridge Flared Horn feed design for Radio telescope receiver system Using a Genetic Algorithm.