- Antenna Design and Analysis
- Microwave Engineering and Waveguides
- Energy Harvesting in Wireless Networks
- Wireless Power Transfer Systems
- RFID technology advancements
- Advanced Antenna and Metasurface Technologies
- Electromagnetic Compatibility and Noise Suppression
- Radio Frequency Integrated Circuit Design
- Innovative Energy Harvesting Technologies
- Advanced MIMO Systems Optimization
- Membrane Separation Technologies
- Oil and Gas Production Techniques
- Electrohydrodynamics and Fluid Dynamics
- Engineering and Technology Innovations
- Antenna Design and Optimization
- Impact of Light on Environment and Health
- Membrane-based Ion Separation Techniques
- IoT-based Smart Home Systems
Tenaga Nasional Berhad (Malaysia)
2024
Kolej Poly-Tech MARA
2020
Technical University of Malaysia Malacca
2013-2014
Energy harvesting or energy scavenging is basically a conversion process of the ambient into electrical energy. The exists around us in many different forms including thermal, chemical, and radio frequency (RF). This technique significantly reduces costs replacing batteries periodically. Hence, offers various environmental friendly alternative sources, which include vibration, electromagnetic wave, wind solar power. study will focus on RF that involves generating small amount power to drive...
A planar dual-band monopole antenna is presented for Global System Mobile Communications (GSM) band applications, which also have the potential to be used energy harvesting system. The proposed comprises of a ground plane at back FR4 substrate and three microstrip lines are physically connected with each other top surface substrate. achieves good return loss resonance frequencies 915 MHz 1800 bandwidth value 124.2 196.9 respectively. gains 1.97 dB 3.05 achieved 900 MHz. Experimental results...
A dual and triple microstrip meander slot antenna is presented for Wireless Local Area Network (WLAN) application. The also has the potential to be used as receiving in an energy harvesting system. proposed comprises a rectangular patch element embedded with slots. parametric study performed investigate characteristic of double meandered slots compared same Microstrip can achieve return loss until −24.54dB. However gain antenna, 1.46 dBi lower than which 4.28 dBi. Other parameters are...
This paper studies a wideband antenna of ice-cream cone structure and it is integrated with rectifying circuit which has the potential to be used for RF energy harvesting system. The designed by using CST Studio Suite 2011 fabricated on double sided FR-4 printed board an etching technique. A single stage designed, simulated, measured in this work. design simulation process was done Agilent Advanced Design System (ADS) 2011. Simulation measurement were carried out various input power levels...
This paper presents compact structure of bandpass filter integrated with Defected Microstrip Structure (DMS) to produce band-pass and band reject response simultaneously. The design based upon λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">g0</sub> short-circuited stubs structures 7 <sup xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> degree. narrow notch responses produced by DMS was introduced at a frequency 5.2 GHz in order any...
This paper studies the dual-band monopole antenna based on meander line structure for Global System Mobile Communications (GSM) band applications, which is also has potential to be used RF energy harvesting. A with a conductor investigated during design using Computer Simulation Tool (CST) software. The fabricated double-sided FR-4 printed circuit board an etching technique. comparison between simulation and measurement results return loss radiation patterns are observed in good agreement....
In this work, a dual layer rectangular microstrip patch antenna with H-slot is proposed for improving the return loss and enhanced gain at 2.4 GHz 2.45 GHz. The designed by using CST Microwave Studio used to design mathematically based on antenna. Simulated experimental results obtained show that it exhibits good radiation behavior within RFID frequency range. It found shows - 18.584 dB 19.692 resonant of 2.442 At desired along band, 2.228 2.756 achieved.
This paper presents the transformation of generalized Chebyshev lowpass filter prototype to highpass using Suspended Stripline Structure (SSS) technology. The study involves circuit analysis determine responses with a transmission zero at finite frequency. from provides cutoff frequency 3.1 GHz return loss better than -20 dB. design is simulated on Roger Duroid RO4350 dielectric constant, ε <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</sub>...
In this work, a novel coplanar waveguide (CPW) fed rectangular patch antenna embedded with four L-shaped slots for WiMAX application was proposed. This is designed by using an FR4 epoxy board dielectric constant, ε <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</inf> = 4.4, tangent loss, tan δ 0.019 and the thickness of substrate, h 1.6mm. There are two methods applied in to improve characteristic antenna. The first method adding on bandwidth...
Microstrip slotted meander line antenna with a diverse number of slots is presented for 2.4 GHz Wireless Local Area Network (WLAN) application. The proposed comprises rectangular microstrip patch element embedded several numbers in many positions. parametric study performed to investigate the characteristic these antennas different meandered slots. Many designs are produced and they analyzed based on used. Antenna 7 lines has most size reduction approximately 23% original size. This an early...
This paper presents the design of generalized Chebyshev lowpass filter (LPF) and integrated with Defected Stripline Structure (DSS) using Suspended (SSS). The study involves circuit analysis to determine responses a transmission zero at finite frequency in order produce reduced number elements values prototype circuit. LPF provides cut-off 6 GHz return loss better than −19 dB, while DSS exhibits notch 3.2 stopband response −40 dB. Thus, will band reject simultaneously. is implemented on...
In this paper, a printed two C-shaped monopole antenna array for dual-band WLAN application is presented. The proposed contains with shorting line connecting the arms of elements. purpose to neutralize current between which in return can increase isolation. A parametric study was also carried out investigate various parameters that effect design. has been designed and simulated by using CST Microwave Studio simulation software. loss gain result fabricated 25.40 dB 2.91 at 2.40 GHz 16.20 2.82...
The growing adoption of digital technologies in power distribution networks has highlighted limitations traditional substation circuit breaker (CB) control methods, particularly their dependence on dedicated hardware and complex installations. This study addresses these challenges by proposing an alternative solution for Remote Circuit Breaker (RCB) using mobile devices. primary objective is to simplify enhance the operational flexibility without requiring extensive infrastructure...
This paper presents an analysis of matching circuit with rectifier for RF energy harvesting. The has a significant influence to improve the efficiency RF-DC conversion. In this paper, comparative is performed, particularly with-and without-matching circuit. conducted using ADS simulation version 2011, determine output power as well rectifier. results show with-matching produced higher about 72%, compared which only achieved 20% efficiency. effects tuning upon had been studied. parametric...
This paper presents the method to transform generalized Chebyshev lowpass filter prototype highpass based on Suspended Stripline Structure (SSS) technology. The study involves circuit analysis determine responses with a transmission zero at finite frequency. transformation of from produces cutoff frequency 3.1 GHz return loss better than -20 dB. design is simulated and measured Roger Duroid RO4350 dielectric constant, ɛr 3.48 thickness 0.508 mm. experimental results are in good agreement...
This paper studies a compact wideband tree-shaped coplanar antenna which has the potential to be used for RF energy harvesting. The is fabricated on double-sided FR-4 printed circuit board using an etching technique. effect of semi-circle patch embedded triangular been studied. comparison between simulation and measurement results return loss radiation patterns are observed in good agreement. measured line with response where both manage achieve lower than-10dB. A bandwidth 3.64 GHz 3.94...