Azizah Ahmad

Azizah Ahmad
Universiti Malaysia Pahang | ump · Faculty of Industrial Sciences and Technology

About

11
Publications
751
Reads
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16
Citations
Citations since 2017
3 Research Items
14 Citations
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201720182019202020212022202301234
201720182019202020212022202301234
201720182019202020212022202301234

Publications

Publications (11)
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
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...
Article
Electromagnetic radiation can be prevented by using microwave absorber. Microwave absorbers are applied in an anechoic chamber for the electromagnetic compatibility (EMC) and electromagnetic interference (EMI) evaluation on its wall, ceiling, and floor. The purpose of this research is to develop a carbon-coated flat shape of biomass absorbers using...
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
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...
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
In this feasibility study, four approaches in implementing speech recognition system for speech modeling are proposed. These approaches are based on data - speaker dependability of speech recognition system. Desired information or features in Mel Frequency Cepstral Coefficient (MFCC) are extracted from the speech samples. For pattern matching, Supp...
Conference Paper
Full-text available
Cervical cancer been known to be the cause of many deaths each year. Screening tests, such as the Pap smear test used for the detection of the precancerous stage are able to avoid the occurrence of cervical cancer. However, the Pap smear test does have some disappointing disadvantages such as the fact that it has less effective slide preparation an...
Conference Paper
Radio Frequency (RF) radiation effects are strictly relying on few critical factors, ie frequency, period of exposure and distance. Certain frequency ranges are absorbed in body tissue more than the other frequency range. The second factor is the duration of exposure. Where, over the period of time, the body will absorb more RF frequencies which he...

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