Skip to main content

Research Repository

Advanced Search

Outputs (328)

A Compact Design of Tunable Band-Notched Ultra-Wide Band Antenna (2012)
Journal Article
See, C. H., Elfergani, I. E. E., Abd-Alhameed, R. A., Jones, S., & Excell, P. S. (2012). A Compact Design of Tunable Band-Notched Ultra-Wide Band Antenna. Microwave and Optical Technology Letters, 54(7), 1642-1644. https://doi.org/10.1002/mop.26907

In this letter, a compact ultrawideband planar inverted F‐L antenna with a tunable band‐notched response is presented. Tuning of the rejected frequency bands is realized by loading a variable capacitor on an embedded slot of the proposed antenna stru... Read More about A Compact Design of Tunable Band-Notched Ultra-Wide Band Antenna.

Multi-band weakly ground-coupled balanced antenna design for portable devices (2012)
Journal Article
Zhou, D., Abd-Alhameed, R., Alhaddad, A., See, C. H., Noras, J., Excell, P., & Gao, S. (2012). Multi-band weakly ground-coupled balanced antenna design for portable devices. IET Science Measurement and Technology, 6(4), 306-310. https://doi.org/10.1049/iet-smt.2011.0151

A balanced antenna for wireless portable devices applications with multiple band operational performance is investigated and discussed. The designed antenna is weakly ground-couple, although can be considered as an energy-efficient radiator. The ante... Read More about Multi-band weakly ground-coupled balanced antenna design for portable devices.

A frequency tunable PIFA design for handset applications (2012)
Journal Article
Hwang See, C., Elfergani, I. E., Abd-Alhameed, R., Bin-Melha, M., Zhou, D., Child, M., & Excell, P. S. (2012). A frequency tunable PIFA design for handset applications. Lecture Notes in Computer Science, 77, 688-693. https://doi.org/10.1007/978-3-642-35155-6_57

A frequency tunable planar inverted F antenna (PIFA) is presented for use in the following bands: DCS, PCS, and UMTS. Initially, the tuning was achieved by placing a lumped capacitor, with values in the range of 1.5 to 4 pF, along the slot of the rad... Read More about A frequency tunable PIFA design for handset applications.

Antennas for Emerging 5G Systems (2019)
Journal Article
Sayidmarie, K. H., McEwan, N. J., Excell, P. S., Abd-Alhameed, R. A., & See, C. H. (2019). Antennas for Emerging 5G Systems. International Journal of Antennas and Propagation, 2019, 1-3. https://doi.org/10.1155/2019/9290210

5G will support significantly faster mobile broadband speeds and extensive mobile data usage, as well as enabling the full potential of the Internet of Things. From virtual reality and autonomous cars, to the industrial internet and smart cities, 5G... Read More about Antennas for Emerging 5G Systems.

A New Waveguide Slot Array Antenna with High Isolation and High Antenna Bandwidth Operation on Ku- and K-bands for Radar and MIMO Systems (2018)
Presentation / Conference Contribution
Alibakhshikenari, M., Virdee, B. S., See, C. H., Abd-Alhameed, R., Falcone, F., & Limiti, E. (2018, September). A New Waveguide Slot Array Antenna with High Isolation and High Antenna Bandwidth Operation on Ku- and K-bands for Radar and MIMO Systems. Presented at 2018 15th European Radar Conference (EuRAD), Madrid

In this paper a novel technique is proposed to reduce the mutual coupling between the radiating elements of a waveguide slot array antenna. This is achieved by inserting slots between the waveguide oval shaped slots. The reference waveguide array ant... Read More about A New Waveguide Slot Array Antenna with High Isolation and High Antenna Bandwidth Operation on Ku- and K-bands for Radar and MIMO Systems.

Study on Antenna Mutual Coupling Suppression Using Integrated Metasurface Isolator for SAR and MIMO Applications (2018)
Presentation / Conference Contribution
Alibakhshikenari, M., Virdee, B. S., See, C. H., Abd-Alhameed, R., Falcone, F., Andujar, A., Anguera, J., & Limiti, E. (2018, September). Study on Antenna Mutual Coupling Suppression Using Integrated Metasurface Isolator for SAR and MIMO Applications. Presented at 2018 48th European Microwave Conference (EuMC), Madrid, Spain

A metasurface based decoupling structure that is composed of a square-wave slot pattern with exaggerated corners that is implemented on a rectangular microstrip provides high-isolation between adjacent patch antennas for Synthetic Aperture Radar (SAR... Read More about Study on Antenna Mutual Coupling Suppression Using Integrated Metasurface Isolator for SAR and MIMO Applications.

Mutual-Coupling Reduction in Metamaterial Substrate Integrated Waveguide Slotted Antenna Arrays Using Metal Fence Isolators for SAR and MIMO Applications (2018)
Presentation / Conference Contribution
Alibakhshikenari, M., Virdee, B. S., See, C. H., Abd-Alhameed, R., Falcone, F., & Limiti, E. (2018, August). Mutual-Coupling Reduction in Metamaterial Substrate Integrated Waveguide Slotted Antenna Arrays Using Metal Fence Isolators for SAR and MIMO Applications. Presented at 2018 12th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), Espoo

A new type of mutual coupling reduction technique is applied to metamaterial substrate integrated waveguide (SIW) slotted antenna array. The circular shaped reference SIW antenna array is constructed from Alumina substrate with dimensions of 40×5×1.5... Read More about Mutual-Coupling Reduction in Metamaterial Substrate Integrated Waveguide Slotted Antenna Arrays Using Metal Fence Isolators for SAR and MIMO Applications.

New Approach to Suppress Mutual Coupling Between Longitudinal-Slotted Arrays Based on SIW Antenna Loaded with Metal-Fences Working on VHF/UHF Frequency-Bands: Study, Investigation, and Principle (2018)
Presentation / Conference Contribution
Alibakhshikenari, M., Virdee, B. S., See, C. H., Abd-Alhameed, R., Falcone, F., & Limiti, E. (2018, July). New Approach to Suppress Mutual Coupling Between Longitudinal-Slotted Arrays Based on SIW Antenna Loaded with Metal-Fences Working on VHF/UHF Frequency-Bands: Study, Investigation, and Principle. Presented at 14th Conference on PhD research in Microelectronics and Electronics (PRIME 2018), Prague, Czech Republic

In this work it is demonstrated that substrate integrated waveguide longitudinal slotted array antenna (SIWLSAA) which is loaded with metal fences exhibits highisolation across VHF/UHF bands. A reference SIWLSAA used for comparison purpose comprises... Read More about New Approach to Suppress Mutual Coupling Between Longitudinal-Slotted Arrays Based on SIW Antenna Loaded with Metal-Fences Working on VHF/UHF Frequency-Bands: Study, Investigation, and Principle.

Current technologies and location based services (2017)
Presentation / Conference Contribution
Ahmad, I., Asif, R., Abd-Alhameed, R., Alhassan, H., Elmegri, F., Noras, J., …Jones, S. (2017). Current technologies and location based services. . https://doi.org/10.1109/itecha.2017.8101958

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.

Simultaneous Measurement of Temperature and Relative Humidity Using a Dual-Wavelength Erbium-Doped Fiber Ring Laser Sensor (2019)
Journal Article
Mądry, M., Alwis, L., Binetti, L., Pajewski, Ł., & Bereś-Pawlik, E. (2019). Simultaneous Measurement of Temperature and Relative Humidity Using a Dual-Wavelength Erbium-Doped Fiber Ring Laser Sensor. IEEE Sensors Journal, 19(20), 9215-9220. https://doi.org/10.1109/JSEN.2019.2922041

A fiber ring laser sensor setup utilizing FBGs (Fiber Bragg Gratings) for simultaneous measurement of ambient temperature and relative humidity (RH) is presented. Two FBGs are incorporated as tunable filters for a dual-wavelength laser emission, wher... Read More about Simultaneous Measurement of Temperature and Relative Humidity Using a Dual-Wavelength Erbium-Doped Fiber Ring Laser Sensor.

Durability of functionalized carbon structures with optical fiber sensors in a highly alkaline concrete environment. (2019)
Journal Article
Bremer, K., Alwis, L., Zheng, Y., Weigand, F., Kuhne, M., Helbig, R., & Roth, B. (2019). Durability of functionalized carbon structures with optical fiber sensors in a highly alkaline concrete environment. Applied Sciences, 9(12), https://doi.org/10.3390/app9122476

The paper presents an investigation into the durability of functionalized carbon structures (FCS) in a highly alkaline concrete environment. First, the suitability of optical fibers with different coatings—i.e., acrylate, polyimide, or carbon—for the... Read More about Durability of functionalized carbon structures with optical fiber sensors in a highly alkaline concrete environment..

A Probabilistic Design Reuse Index for Engineering Designs (2020)
Journal Article
Vasantha, G., Corney, J., Stuart, S., Sherlock, A., Quigley, J., & Purves, D. (2020). A Probabilistic Design Reuse Index for Engineering Designs. Journal of Mechanical Design, 142(10), Article 101401. https://doi.org/10.1115/1.4046435

Many companies offer a range of related products that are constructed using similar components and processes. This enables them to meet customer expectations of product variety while minimising the overheads (e.g. development and manufacturing costs)... Read More about A Probabilistic Design Reuse Index for Engineering Designs.

Design of mobile band subsurface antenna for drainage infrastructure monitoring (2019)
Journal Article
See, C. H., Kosha, J., Mshwat, W. A., Abd-Alhameed, R. A., Ong, F. L., McEwan, N. J., & Excell, P. S. (2019). Design of mobile band subsurface antenna for drainage infrastructure monitoring. IET microwaves, antennas & propagation, 13(13), 2380-2385. https://doi.org/10.1049/iet-map.2019.0243

This paper presents an underground subsurface wireless sensor for drainage infrastructure water level monitoring. It operates from 800 to 2170 MHz to cover the required GSM850/900, GSM1800/1900 and UMTS bands. The system consists of a wideband antenn... Read More about Design of mobile band subsurface antenna for drainage infrastructure monitoring.

Optimal Advance Angle for Aided Maximum-Speed-Node Design of Switched Reluctance Machines (2019)
Journal Article
Rocca, R., Giulii Capponi, F., Papadopoulos, S., De Donato, G., Rashed, M., & Galea, M. (2020). Optimal Advance Angle for Aided Maximum-Speed-Node Design of Switched Reluctance Machines. IEEE Transactions on Energy Conversion, 35(2), 775-785. https://doi.org/10.1109/tec.2019.2959823

In the design processes of Switched Reluctance Machines that operate in wide constant power speed ranges, the maximum power available at maximum speed must be evaluated for every machine candidate. This is critical to ensure compliance with the power... Read More about Optimal Advance Angle for Aided Maximum-Speed-Node Design of Switched Reluctance Machines.

Expanding the portfolio of tribo-positive materials: aniline formaldehyde condensates for high charge density triboelectric nanogenerators (2019)
Journal Article
Zhao, P., Soin, N., Kumar, A., Shi, L., Guan, S., Tsonos, C., Yu, Z., Ray, S. C., McLaughlin, J. A., Zhu, Z., Zhou, E., Geng, J., See, C. H., & Luo, J. (2020). Expanding the portfolio of tribo-positive materials: aniline formaldehyde condensates for high charge density triboelectric nanogenerators. Nano Energy, 67, Article 104291. https://doi.org/10.1016/j.nanoen.2019.104291

The rapid uptake of energy harvesting triboelectric nanogenerators (TENGs) for self-powered electronics requires the development of high-performance tribo-materials capable of providing large power outputs. This work reports on the synthesis and use... Read More about Expanding the portfolio of tribo-positive materials: aniline formaldehyde condensates for high charge density triboelectric nanogenerators.

Determination of the Aspect-ratio Distribution of Gold Nanorods in a Colloidal Solution using UV-visible absorption spectroscopy (2019)
Journal Article
Kumar, R., Binetti, L., Nguyen, H. T., Alwis, L. S. M., Agrawal, A., Sun, T., & Grattan, K. T. V. (2019). Determination of the Aspect-ratio Distribution of Gold Nanorods in a Colloidal Solution using UV-visible absorption spectroscopy. Scientific Reports, 9, Article 17469. https://doi.org/10.1038/s41598-019-53621-4

Knowledge of the distribution of the aspect ratios (ARs) in a chemically-synthesized colloidal solution of Gold Nano Rods (GNRs) is an important measure in determining the quality of synthesis, and consequently the performance of the GNRs generated f... Read More about Determination of the Aspect-ratio Distribution of Gold Nanorods in a Colloidal Solution using UV-visible absorption spectroscopy.

Mutual Coupling Reduction of Dual-Band Uni-Planar MIMO System Using Neutralization Line Technique (2020)
Journal Article
Saleh, A. M., Nagem, T. A., Abd-Alhameed, R., Noras, J., & See, C. H. (2020). Mutual Coupling Reduction of Dual-Band Uni-Planar MIMO System Using Neutralization Line Technique. The Applied Computational Electromagnetics Society Journal, 35(2), 176-186

This paper presents a low–profile dual-band (2×2) MIMO antenna that works at 2.4GHz, 5.2GHz and 5.8GHz for wireless local area networks (WLAN) applications. A neutralization line technique for enhancing the isolation is used by introducing strip line... Read More about Mutual Coupling Reduction of Dual-Band Uni-Planar MIMO System Using Neutralization Line Technique.

Design as a Marked Point Process (2021)
Journal Article
Quigley, J., Vasantha, G., Corney, J., Purves, D., & Sherlock, A. (2022). Design as a Marked Point Process. Journal of Mechanical Design, 144(2), Article 021713. https://doi.org/10.1115/1.4052844

Although AI systems which support composition using predictive text are well established there are no analogous technologies for mechanical design. Motivated by the vision of a predictive system that interactively suggests features to designer, this... Read More about Design as a Marked Point Process.

A New Optimization Algorithm Based on the Fungi Kingdom Expansion Behavior for Antenna Applications (2021)
Journal Article
Alnahwi, F. M., Yasir, I. A., Sattar, D., Ali, R. S., See, C. H., & Abd-Alhameed, R. A. (2021). A New Optimization Algorithm Based on the Fungi Kingdom Expansion Behavior for Antenna Applications. Electronics, 10(17), Article 2057. https://doi.org/10.3390/electronics10172057

This paper presents a new optimization algorithm based on the behavior of the fungi kingdom expansion (FKE) to optimize the radiation pattern of the array antenna. The immobile mass expansion of the fungi is mimicked in this work as a chaotic behavio... Read More about A New Optimization Algorithm Based on the Fungi Kingdom Expansion Behavior for Antenna Applications.