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Singular Integral Formulations for Electrodynamic Analysis of Metamaterial-Inspired Antenna Array (2020)
Journal Article
Alibakhshikenari, M., Virdee, B. S., Aïssa, S., See, C. H., Althuwayb, A. A., Abd-Alhameed, R., Huynen, I., Falcone, F., & Limiti, E. (2021). Singular Integral Formulations for Electrodynamic Analysis of Metamaterial-Inspired Antenna Array. IEEE Antennas and Wireless Propagation Letters, 20(2), 179-183. https://doi.org/10.1109/lawp.2020.3043380

In this paper, a set of singular integral formulations are derived to calculate the surface impedance matrix on the antenna array elements. The proposed mathematical model enables electrodynamic analysis of antenna arrays designed using metamaterial-... Read More about Singular Integral Formulations for Electrodynamic Analysis of Metamaterial-Inspired Antenna Array.

Study on On-Chip Antenna Design Based on Metamaterial-Inspired and Substrate Integrated Waveguide Properties for Millimetre-Wave and THz Integrated-Circuit Applications (2020)
Journal Article
Alibakhshikenari, M., Virdee, B., Althuwayb, A., Aissa, S., See, C. H., Abd-Alhameed, R., Falcone, F., & Limiti, E. (2021). Study on On-Chip Antenna Design Based on Metamaterial-Inspired and Substrate Integrated Waveguide Properties for Millimetre-Wave and THz Integrated-Circuit Applications. Journal of Infrared, Millimeter and Terahertz Waves, 42, 17-28. https://doi.org/10.1007/s10762-020-00753-8

This paper presents the results of a study on improving the performance parameters such as the impedance bandwidth, radiation gain and efficiency, as well as suppressing substrate loss of an innovative antenna for on-chip implementation for millimetr... Read More about Study on On-Chip Antenna Design Based on Metamaterial-Inspired and Substrate Integrated Waveguide Properties for Millimetre-Wave and THz Integrated-Circuit Applications.

A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems” (2020)
Journal Article
Althuwayb, A. A., Alibakhshikenari, M., Babaeian, F., Virdee, B. S., Aïssa, S., Azpilicueta, L., See, C. H., Huynen, I., Abd-Alhameed, R. A., Falcone, F., & Limiti, E. (2020). A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”. IEEE Access, 8, 192965-193004. https://doi.org/10.1109/access.2020.3032826

Nowadays synthetic aperture radar (SAR) and multiple-input-multiple-output (MIMO) antenna systems with the capability to radiate waves in more than one pattern and polarization are playing a key role in modern telecommunication and radar systems. Thi... Read More about A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”.

Metamaterial-Inspired Antenna Array for Application in Microwave Breast Imaging Systems for Tumor Detection (2020)
Journal Article
Alibakhshikenari, M., Virdee, B. S., Shukla, P., Parchin, N. O., Azpilicueta, L., See, C. H., Abd-Alhameed, R. A., Falcone, F., Huynen, I., Denidni, T. A., & Limiti, E. (2020). Metamaterial-Inspired Antenna Array for Application in Microwave Breast Imaging Systems for Tumor Detection. IEEE Access, 8, 174667-174678. https://doi.org/10.1109/ACCESS.2020.3025672

This paper presents a study of a planar antenna-array inspired by the metamaterial concept where the resonant elements have sub-wavelength dimensions for application in microwave medical imaging systems for detecting tumors in biological tissues. The... Read More about Metamaterial-Inspired Antenna Array for Application in Microwave Breast Imaging Systems for Tumor Detection.

A Low Power Sigma-Delta Modulator with Hybrid Architecture (2020)
Journal Article
An, S., Xia, S., Ma, Y., Ghani, A., See, C. H., Abd-Alhameed, R. A., Niu, C. F., & Yang, R. (2020). A Low Power Sigma-Delta Modulator with Hybrid Architecture. Sensors, 20(18), Article 5309. https://doi.org/10.3390/s20185309

Analogue-to-digital converters (ADC) using oversampling technology and Σ-∆ modulation mechanism are widely applied in digital audio systems. This paper presents an audio modulator with high accuracy and low power consumption by using discrete second-... Read More about A Low Power Sigma-Delta Modulator with Hybrid Architecture.

Improved Adaptive Impedance Matching for RF Front-End Systems of Wireless Transceivers (2020)
Journal Article
Alibakhshikenari, M., Virdee, B. S., Shukla, . P., See, C. H., Abd-Alhameed, R., Falcone, F., & Limiti, . E. (2020). Improved Adaptive Impedance Matching for RF Front-End Systems of Wireless Transceivers. Scientific Reports, 10(1), Article 14065 (2020). https://doi.org/10.1038/s41598-020-71056-0

In this paper an automatic adaptive antenna impedance tuning algorithm is presented that is based on quantum inspired genetic optimization technique. The proposed automatic quantum genetic algorithm (AQGA) is used to find the optimum solution for a l... Read More about Improved Adaptive Impedance Matching for RF Front-End Systems of Wireless Transceivers.

Compact Wideband MIMO Diversity Antenna for Mobile Applications Using Multi-Layered Structure (2020)
Journal Article
Arabi, O., See, C. H., Ullah, A., Ali, N., Liu, B., Abd-Alhameed, R., McEwan, N. J., & Excell, P. S. (2020). Compact Wideband MIMO Diversity Antenna for Mobile Applications Using Multi-Layered Structure. Electronics, 9(8), Article 1307. https://doi.org/10.3390/electronics9081307

A closely packed wideband multiple-input multiple-output (MIMO)/diversity antenna (of two ports) with a small size of less than 18.5 mm by 18.5 mm is proposed for mobile communication applications. The antenna can be orthogonally configured for corne... Read More about Compact Wideband MIMO Diversity Antenna for Mobile Applications Using Multi-Layered Structure.

A Comprehensive Survey of “Metamaterial Transmission-Line Based Antennas: Design, Challenges, and Applications” (2020)
Journal Article
Alibakhshikenari, M., Virdee, B. S., Azpilicueta, L., Naser-Moghadasi, M., Akinsolu, M. O., See, C. H., Liu, B., Abd-Alhameed, R. A., Falcone, F., Huynen, I., Denidni, T. A., & Limiti, E. (2020). A Comprehensive Survey of “Metamaterial Transmission-Line Based Antennas: Design, Challenges, and Applications”. IEEE Access, 8, 144778-144808. https://doi.org/10.1109/ACCESS.2020.3013698

In this review paper, a comprehensive study on the concept, theory, and applications of composite right/left-handed transmission lines (CRLH-TLs) by considering their use in antenna system designs have been provided. It is shown that CRLH-TLs with ne... Read More about A Comprehensive Survey of “Metamaterial Transmission-Line Based Antennas: Design, Challenges, and Applications”.

High-Gain On-Chip Antenna Design on Silicon Layer With Aperture Excitation for Terahertz Applications (2020)
Journal Article
Alibakhshikenari, M., Virdee, B. S., Khalily, M., See, C. H., Abd-Alhameed, R., Falcone, F., Denidni, T. A., & Limiti, E. (2020). High-Gain On-Chip Antenna Design on Silicon Layer With Aperture Excitation for Terahertz Applications. IEEE Antennas and Wireless Propagation Letters, 19(9), 1576-1580. https://doi.org/10.1109/LAWP.2020.3010865

This article investigates the feasibility of designing a high-gain on-chip antenna on silicon technology for sub-terahertz applications over a wide frequency range. High-gain is achieved by exciting the antenna using an aperture fed mechanism to coup... Read More about High-Gain On-Chip Antenna Design on Silicon Layer With Aperture Excitation for Terahertz Applications.

Study on Improvement of the Performance Parameters of a Novel 0.41-0.47 THz On-Chip Antenna Based on Metasurface Concept Realized on 50um GaAs-Layer (2020)
Journal Article
Alibakhshikenari, M., Virdee, B. S., See, C. H., Shukla, P., Salekzamankhani, S., Abd-Alhameed, R., Falcone, F., & Limiti, E. (2020). Study on Improvement of the Performance Parameters of a Novel 0.41-0.47 THz On-Chip Antenna Based on Metasurface Concept Realized on 50um GaAs-Layer. Scientific Reports, 10(1), Article 11034. https://doi.org/10.1038/s41598-020-68105-z

A feasibility study is presented on the performance parameters of a novel on-chip antenna based on metasurface technology at terahertz band. The proposed metasurface on-chip antenna is constructed on an electrically thin high-permittivity gallium ars... Read More about Study on Improvement of the Performance Parameters of a Novel 0.41-0.47 THz On-Chip Antenna Based on Metasurface Concept Realized on 50um GaAs-Layer.

A 10:1 Bandwidth Cryogenic Quadruple-Ridged Flared Horn Design for Reflector Antennas in Radio Astronomy (2020)
Journal Article
Ma, Y., See, C. H., Pang, F., Wu, D., Liu, D., Abidin, Z. Z., Keates, S., Peng, B., & Abd-Alhameed, R. A. (2020). A 10:1 Bandwidth Cryogenic Quadruple-Ridged Flared Horn Design for Reflector Antennas in Radio Astronomy. IEEE Access, 8, 81101-81115. https://doi.org/10.1109/ACCESS.2020.2991350

A two port 2.4 to 24 GHz cryogenic Quadruple-Ridged Flared Horn (QRFH) Feed with 10:1 impedance bandwidth is selected for presentation and investigation in this paper. The antenna geometry is formed by using simulation-based optimization which s... Read More about A 10:1 Bandwidth Cryogenic Quadruple-Ridged Flared Horn Design for Reflector Antennas in Radio Astronomy.

Design and Optimization of a Slotted Monopole Antenna for Ultra-Wide Band Body Centric Imaging Applications (2020)
Journal Article
Danjuma, I. M., Akinsolu, M. O., See, C. H., Abd-Alhameed, R. A., & Liu, B. (2020). Design and Optimization of a Slotted Monopole Antenna for Ultra-Wide Band Body Centric Imaging Applications. IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology, 4(2), 140-147. https://doi.org/10.1109/JERM.2020.2984910

This paper presents a cost-efficient design, optimization and physical implementation of a compact slotted ultra-wideband (UWB) monopole antenna for body-centric imaging applications. The proposed antenna is initially modelled and designed with the a... Read More about Design and Optimization of a Slotted Monopole Antenna for Ultra-Wide Band Body Centric Imaging Applications.

High-Gain Metasurface in Polyimide On-Chip Antenna Based on CRLH-TL for Sub-Terahertz Integrated Circuits (2020)
Journal Article
Alibakhshikenari, M., Virdee, . B. S., See, C. H., A. Abd-Alhameed, R., Falcone, . F., & Limiti, E. (2020). High-Gain Metasurface in Polyimide On-Chip Antenna Based on CRLH-TL for Sub-Terahertz Integrated Circuits. Scientific Reports, 10(1), https://doi.org/10.1038/s41598-020-61099-8

This paper presents a novel on-chip antenna using standard CMOS-technology based on metasurface implemented on two-layers polyimide substrates with a thickness of 500μm. The aluminium ground-plane with thickness of 3μm is sandwiched between the two-l... Read More about High-Gain Metasurface in Polyimide On-Chip Antenna Based on CRLH-TL for Sub-Terahertz Integrated Circuits.

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.

Internal insulation condition identification for high-voltage capacitor voltage transformers based on possibilistic fuzzy clustering (2020)
Journal Article
Meng, Z., Li, H., Chen, Q., & See, C. H. (2020). Internal insulation condition identification for high-voltage capacitor voltage transformers based on possibilistic fuzzy clustering. Review of Scientific Instruments, 91(1), Article 014705. https://doi.org/10.1063/1.5123438

The internal insulation condition of capacitor voltage transformers (CVTs) is a key influence factor that affects their measurement performance and safe operation. However, the internal insulation would age along with long-time operation and degrade... Read More about Internal insulation condition identification for high-voltage capacitor voltage transformers based on possibilistic fuzzy clustering.