Hasnain Abdullah

Hasnain Abdullah
Universiti Teknologi Mara (Pulau Pinang) · Faculty of Electrical

About

47
Publications
9,681
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404
Citations
Citations since 2017
7 Research Items
176 Citations
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2017201820192020202120222023051015202530
2017201820192020202120222023051015202530

Publications

Publications (47)
Article
Full-text available
p>The widespread of coronavirus disease 2019 (COVID-19) pandemic led to a discovery that open distance learning (ODL) has turned out to be the only choice for teaching and learning by most institution (s) of higher learning (IHLs). In Malaysia, ODL is considered a new approach as physical laboratory practice has always been conducted for laboratory...
Article
We live in a generation that relies upon technologies. As a result of the rapid growth of wireless devices and networks, humans are exposed to radiation. The increases of this unwanted radiation surround raise concerns about the possible human health effect and the impact on electronic devices. This project aims to develop anti-microwave brick wall...
Article
Agriculture waste has huge potential to be used as an alternative material for constructing microwave absorber which is typically used in an anechoic chamber. The existing microwave absorbers are normally manufactured from chemical substances. This project is proposing the use of a new composite biomass material namely coconut coir, for constructin...
Article
Full-text available
Electromagnetic elimination was used to eliminate unwanted radiation that may interface with machinery or affect human health. The use of microwave absorbers has become necessary for an environment with a safe electromagnetic wave level. The objectives of this project are to design a microwave absorber as a modern biomass wall tile and to investiga...
Chapter
This paper investigates the performance of multilayer pyramidal hollow green biomass coated absorbing materials. The designed absorber is simulated using CST Microwave Studio. Several experimental evaluations have been executed to investigate the performance of the tested absorber using free space arch measurement method. The frequency between 8 an...
Article
Radiation Absorbing Material (RAM) is used to absorb radiations of electromagnetic wave surrounding us. Thus, the multiple layers’ microwave absorber using biomass composite materials could be one of the solutions to address the problem. In order to effectively absorb the radiation of electromagnetic wave, the multiple layers’ absorber is character...
Article
This paper will introduce the new technique to design new type of microwave absorber. Microwave absorbers are used in anechoic chamber to diminish the unwanted RF signal, so that the measurement obtain have perfect and good results. The basic theories of slot antenna combining with the theory of microwave absorber are used in this paper. As a resul...
Conference Paper
This paper presents the performance effect of hollow pyramidal microwave absorber that had been applied with slotted array principle. The Sierpinski triangle was used as the slotted on the hollow pyramidal microwave absorber. This paper includes the theories, simulation and measurement result. The simulation using CST Microwave Studio Suite used to...
Article
This paper is concerned on designing and determining the absorption effect of ice-cream sticks pyramidal absorber (ISP absorber). The basic microwave absorber was design by cutting ice-cream sticks into pyramidal shape. In this paper, there are two type of ISP absorber which are coated with palm ash as absorbent material and without coated with abs...
Article
Studies have shown that human body emits their own signal radiation, which emit their frequency radiations into space surround the body. In this paper, an investigation of body radiation wave detector is performed to measure the frequency of human radiation wave. At first, the performance of body radiation wave detector is calibrated by considering...
Article
In recent years, absorbing material has received great attention for various applications in electromagnetic wave, communications, radar, satellite systems, and anechoic chambers for the usage of both civil and military fields. This paper investigates the effectiveness of coconut shell-based microwave absorbing material. The absorber was prepared u...
Conference Paper
An anechoic chamber is considered good when there is no signal reflection inside the chamber and also when there is no incoming signal from outside the chamber. The key element inside an anechoic chamber is the absorbing material. The evaluations of mini anechoic chamber fitted with coated absorbers were carried out by analyzing the absorption perf...
Conference Paper
This article refers to the design technique related to the cross-section absorption properties of the materials absorbing electromagnetic waves. The methodology of construction of absorber, measurements of microwave absorption, description of the original laboratory set-up for measuring the absorption characteristics of the examined materials as a...
Conference Paper
Endogenous electromagnetic field of the human body have been found to radiate into the space surround the body. The field is called as human radiation wave that encircle the physical body and vibrates at certain frequency. In this paper, a classification technique that is used to classify male and female gender through frequency analysis of human r...
Conference Paper
This paper investigates the capability of oil palm ash paint as green-absorbing material in a way to absorb microwave radiations. The paint is coated on three different wall materials which are elephant board, plywood and cement. The absorb performance of the paint is observed using the simulation result of Computer Simulation Technology (CST) Micr...
Article
The most important part to be highlighted in developing a reliable microwave absorber is the material used to fabricate the absorber. As an alternative in managing the increase of the oil palm residues throughout the country, this study is focusing on developing a microwave absorber coating using oil palm fly ash. The software uses for design and s...
Conference Paper
The investigation of oil palm ash microwave absorbers involves the design, simulation and fabrication of an effective broadband frequency for anechoic chamber. The resistive and magnetic materials in the oil palm ash compose its potential to be used as microwave absorbing materials. These oil palm ash absorbers are simulated using CST Microwave Stu...
Conference Paper
Studies on human body have shown that they radiate frequencies into space. Radiation of the human body has become attractive biometric feature that is based on holistic body information. This study presents a new technique for classification that is used to classify gender of males and females through frequency radiation analysis in torso region. T...
Article
Full-text available
Many studies have indicated that there are endogenous electromagnetic fields gen-erated by the human body. All the living body, especially the human being is believed to have their own radiation which the field radiates into space around on the body. With the advancement of science and technology, this radiation field can be described as the vibrat...
Article
Microwave absorbing materials have received great attention in recent years for both civil and military fields due to various applications in communications, radar, satellite systems, and anechoic chambers.Wireless communication is currently the fastest growth of telecommunication technology.Many studies have indicated that there are harmful radiat...
Conference Paper
This paper describes an analysis of body radiation frequency for the purpose of gender classification. The human radiation frequency is experimentally studied from 33 healthy human subjects of 17 males and 16 females. KNN classifier is employed for gender classification. The number of training to testing ratio was evaluated at 50 to 50, 60 to 40 an...
Article
Full-text available
This paper discusses an analysis of human radiation frequency and classify the characteristic of human body radiation based on gender. The frequency radiation of the human body is experimentally studied from 33 healthy subjects on 23 points around the body. The characteristic difference of human radiation is evaluated using statistical analysis of...
Conference Paper
This paper discusses the relationship of frequency radiation of the human body. The human radiation of endogenous electromagnetic field in human body is experimentally studied from 33 healthy human subjects. Different parts of the body radiation frequency are investigated separately. Statistical properties of body radiation frequency have been inve...
Article
Full-text available
Rubber tire dust-rice husk is an innovation in improving the design of pyramidal microwave absorbers to be used in radio frequency (RF) anechoic chambers. An RF anechoic chamber is a shielded room covered with absorbers to eliminate unwanted reflection signals. To design the pyramidal microwave absorber, rice husk will be added to rubber tire dust...
Article
Full-text available
Agricultural wastes are considered not useful and are commonly dumped or burned after crop harvesting. Rice husks from paddy (Oryza sativa) are example of agricultural wastes. Rice husks have been investigated as the material for the pyramidal microwave absorbers. The setup for the fabrication and measurement of the rice husks pyramidal microwave a...
Conference Paper
An electromagnetic (EM) wave absorber is used to absorb the reflected wave that occurs on the wall of the chamber in the anechoic chamber. To date findings show that the construction of the absorber material used for the absorbers, ferrite is in the lead. A survey on materials that can be used as a carbon for the absorber is performed and the best...
Article
This study discusses an investigation of frequency relationship of the human body radiation based on twenty-three points of radiation in the human body. The endogenous electromagnetic field of the human body is studied experimentally from 33 healthy human subjects. Different parts of the body radiation frequency are investigated separately into fou...
Article
Recently, there has been increasing concern about scientific investigations of the endogenous electromagnetic fields generated by and contained in the human body. In this paper, we discuss an initial investigation of frequency characteristic of the human body radiation that based on chakra point radiation of the human body. A chakra is defined as f...
Conference Paper
Agriculture waste has many potential to produce an alternative and beneficial product for any suitable application such as pyramidal microwave absorber for anechoic chamber. In this work, four different agricultural waste materials had been used in designing the pyramidal microwave absorber to compare its reflectivity performance. The materials are...
Article
Full-text available
Agriculture waste has potential to be used as an alternative material for the microwave absorber used in the anechoic chamber. Compared to the current materials used, such as polystyrene and polyurethane, agricultural waste has low cost and is environmental friendly. In this paper, rice husks from paddy are used as the material in the pyramidal mic...
Article
Full-text available
This paper describes the design and method in developing a low cost, reliable and good performance microwave absorber for the application in anechoic chamber room measurement. Theoretically, the absorber is designed and to be functioning at a frequency range from 1.5GHz to 15GHz (in pyramidal-shaped). However, due to the equipment limitation for me...
Conference Paper
In recent years, there has been increasing concern about scientific investigations of the endogenous electromagnetic fields generated by and contained in the human body. The purpose of the research is to investigate a simple portable instrument setup for measurement of human radiation waves. The human radiation frequency is measured using very sens...
Conference Paper
Full-text available
The Radial Line Slot Array (RLSA) antenna is known for its good characteristics such as low profile, low cost, aesthetically pleasing, ease of installation and simple structure. This research involves the optimization of the design and development of a novel linearly polarized Beam Squinted Radial Line Slot Array (RLSA) antenna at 5.8 GHz band. The...
Conference Paper
This paper presents the absorber in which it is designed and shaped to absorb incident radio frequency (RF) radiation. The absorber is designed using composite material since the significance of the project is to find a potential solution to construct a low cost anechoic chamber. This model of mini anechoic chamber, which is consisting of the new d...
Conference Paper
The radial line slot array (RLSA) Antenna is known for its good characteristics such as low profile, low cost, aesthetically pleasing, ease of installation and simple structure. This research involves the design and development of a novel linearly polarized beam squinted radial line slot array (RLSA) Antenna for IEEE 802.11a WLAN application operat...
Conference Paper
The purpose of mini anechoic chamber is to allow cost effective testing of microwave signal. It is because measurements of the radiation pattern are usually done in an anechoic chamber in order to avoid reflections from nearby objects and external interference from affecting the field pattern. The most important element in anechoic chamber is absor...
Conference Paper
This paper describes about the design and method in developing a low cost, reliable and good performance microwave absorber for the application in anechoic chamber room measurement. Theoretically, the absorber is designed to be functioning at frequency range from 1.5 GHz to 15 GHz and in pyramidal-shaped. However due to the equipment limitation for...
Conference Paper
General packet radio service (GPRS) is bearer service of Global System for Mobile (GSM) that has been deployed worldwide and is widely considered a technology precursor to the evolving third generation (3G) wireless network. In order to improve the GPRS traffic performance, the study on the factors contributed to the low performance of GPRS is carr...
Conference Paper
Full-text available
A radial line slot array (RLSA) antenna is a high gain and high efficiency planar antenna which is suitable for direct broadcast satellite (DBS) reception. The satellite communication market commonly uses the standard parabolic dish antenna. However, the use of this type of antenna has some disadvantages. In a primary fed design, there is a conside...

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