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Dr. Nor Muzlifah Mahyuddin

Ph.D in Microelectronics System Design
Newcastle University, Newcastle upon Tyne, United Kingdom.

M.Sc. in Electronics System Design Engineering
Universiti Sains Malaysia, Malaysia.

B.Eng. in Electrical Telecommunication
Universiti Teknologi Malaysia, Malaysia.


Tel:04-5995789
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muzlifah1

Research Interest

RF and Microwave Engineering, Signal and Power Integrity, Reliability and Variability

Current Research

Split Ring Resonator (SRR) is a well known sub-wavelength metamaterial structure that exhibits negative values of permeability over a narrow frequency band around its resonance frequency. Theory and applications of single ring, double ring or multiple ring SRR cells with circular or square/rectangular geometry (Figure 1) have been investigated in microwave and optical frequencies in a large number of publications. However, none of the research publication focuses on the impact of variability of the SRR on its performance and the incorporation of the variability analysis into the analytical modelling to reduce the computational operating time and memory space.
Most of those studies have investigated the SRR behaviour theoretically, experimentally or numerically by using full-wave electromagnetic solvers, which usually need very large computer memory space and quite long computer processing times. Sufficiently accurate equivalent lumped circuit models, on the other hand, can be effectively used to estimate the behaviour of SRR structures in a simple, fast and computationally efficient manner but another alternative that is even more accurate and efficient in terms of processing time and memory space is the variability modelling. Not only it is able to predict the outcomes or the performance based on the variation of the dimension, process and even temperature, the model is also very accurate in determining the dimensions and electrical parameters of SRR. This approach would even make optimization approach feasible in the design of special SRR structures. Subsequently, this work is realizing the sustainability aspect of the SRR design regardless of its application in RF and microwave engineering.

Figure 1. Circular and square split-ring resonator and their parameters.

Achievments

Split Ring Resonator (SRR) is a well known sub-wavelength metamaterial structure that exhibits negative values of permeability over a narrow frequency band around its resonance frequency. Theory and applications of single ring, double ring or multiple ring SRR cells with circular or square/rectangular geometry (Figure 1) have been investigated in microwave and optical frequencies in a large number of publications. However, none of the research publication focuses on the impact of variability of the SRR on its performance and the incorporation of the variability analysis into the analytical modelling to reduce the computational operating time and memory space.
Most of those studies have investigated the SRR behaviour theoretically, experimentally or numerically by using full-wave electromagnetic solvers, which usually need very large computer memory space and quite long computer processing times. Sufficiently accurate equivalent lumped circuit models, on the other hand, can be effectively used to estimate the behaviour of SRR structures in a simple, fast and computationally efficient manner but another alternative that is even more accurate and efficient in terms of processing time and memory space is the variability modelling. Not only it is able to predict the outcomes or the performance based on the variation of the dimension, process and even temperature, the model is also very accurate in determining the dimensions and electrical parameters of SRR. This approach would even make optimization approach feasible in the design of special SRR structures. Subsequently, this work is realizing the sustainability aspect of the SRR design regardless of its application in RF and microwave engineering.


In my early years, I had published two conference papers in IEEE RF and Microwave Conference titled, A 10 GHz PHEMT Dielectric Resonator Oscillator and Modeling of a 10 GHz Dielectric Resonator Oscillator in ADS. During my PhD study, I manage to produce an impact factor journal titled, Design and Analysis of Low-Swing Driver Scheme for Long Interconnects in Elsevier Microelectronics Journal. Subsequently, three conference papers have been published from this research, which are The Effect of Process Variations on the Performance of Low-Swing Signaling Schemes; The Sensitivity Analysis of the Effect of the Single Event Upset on Low-Swing Signaling Drivers; and Power and Performance Analysis of Low-Swing Driver Schemes for On-Chip Global Interconnects. The first two papers are published in international conferences whereas the last paper in national conference called National Conference on Electrical and Electronic Engineering at UTHM. The respective international conferences are International Conference on Emerging Trend in Engineering and Technology at Singapore; and International Conference on Electron Devices and Solid State Circuits at Bangkok, Thailand.
Currently I have published one impact factor journal titled Single-Event-Upset Sensitivity Analysis on Low-Swing Drivers in Hindawi The Scientific World Journal and one indexed journal titled Variability Analysis and Modeling of the Crosstalk Effects on the Low-Swing Signalling Scheme using DoE Approach in Elektropika.
Subsequently, I have three papers in international conferences which are related to my current research area. They are:

• Design of a 10 GHz Low Phase Noise Oscillator using Split-Ring Resonator Array in 2013 IEEE International RF and Microwave Conference (RFM2013), December 2013.
• A 10 GHz Low Phase Noise Split-Ring Resonator Oscillator in International Journal of Information and Electronics Engineering (IJIEE), November 2013.
• Design of a 5.8 GHz Bandstop Filter using Split Ring Resonator Array in Springer Lecture Notes, Chapter 54 for the 8th International Conference on Robotic, Vision, Signal Processing and Power Applications, 2014.

Figure 1. Circular and square split-ring resonator and their parameters.

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