Browsing School of Mechatronic Engineering (Articles) by Author "emcheng@unimap.edu.my"
Now showing items 1-6 of 6
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Comparative study between measurement and predictions using geometrical optics and uniform theory of diffraction for case of non-line-of-sight (NLOS) in indoor environment
Cheng, Ee Meng, Dr.; Zulkifly, Abbas, Prof. Madya Dr.; Mohd Fareq, Abd. Malek, Dr.; Lee, Kim Yee, Dr.; Kok, Yeow You; Khor, Shing Fhan, Dr. (Springer Science+Business Media New York, 2013-08)This paper describes the investigation and comparison of the accuracy of a deterministic model for a WLAN system in the indoor environment. The measurement system consisted of a spectrum analyzer and a log-periodic antenna. ... -
Experimental determination of the performance of rice husk-carbon nanotube composites for absorbing microwave signals in the frequency range of 12.4-18 GHz
Lee, Yeng Seng; Mohd Fareq, Abd. Malek, Dr.; Cheng, Ee Meng, Dr.; Liu, Wei Wen, Dr.; Kok, Yeow You; Muhammad Nadeem, Iqbal; Wee, Fwen Hoon, Dr.; Khor, Shing Fhan, Dr.; Liyana, Zahid; Mohd Fariz, Haji Abd Malek (EMW Publishing, 2013)Composites of rice husks and carbon nanotubes (RHC-NTs) are an innovation in improving the absorption of microwave signals. Rice husks, which are an agricultural waste material, have been found to possess a significant ... -
Modelling of multi-axial ultimate elastic wall stress (UEWS) test for glass fibre reinforced epoxy (GRE) composite pipes
Mohd Shukry, Abdul Majid, Dr.; Mohd Afendi, Rojan, Dr.; Ruslizam, Daud, Dr.; Nasrul Amri, Mohd Amin, Dr.; Azizul, Mohamad; Cheng, Ee Meng, Dr.; Gibson, A. G. (Trans Tech Publications, 2013)This paper describes the modeling of multiaxial ultimate elastic wall stress (UEWS) at room temperature for glass fibre reinforced epoxy (GRE) composite pipes. The model developed, predicts the stress-strain response caused ... -
Optical properties of ultraphosphate glasses containing mixed divalent zinc and magnesium ions
Khor, Shing Fhan, Dr.; Zainal Abidin, Talib, Prof. Dr.; Mohd Fareq, Abd. Malek, Dr.; Cheng, Ee Meng, Dr. (Elsevier B.V., 2013-01)Ternary zinc magnesium ultraphosphate glasses corresponding to (ZnO)x (MgO)30 x (P2O5)70 were prepared by melt quenching technique in the range of 5 6 x 6 20 mol%. The optical absorption spectra of the glasses were ... -
Study of dual open ended coaxial sensor system for calculation of phase using two magnitudes
Kim, Yee Lee; Boon, Kuan Chung; Kok Yeow, You; Ee Meng, Cheng, Dr.; Zulkifly, Abbas (Institute of Electrical and Electronics Engineers (IEEE), 2014-01)A dual open ended coaxial sensor system to determine complex permittivity was studied in detail. This paper focuses on determination of a reflection coefficient phase from two magnitudes using modified capacitance model ... -
The use of dielectric mixture equations to analyze the dielectric properties of a mixture of rubber tire dust and rice husks in a microwave absorber
Cheng, Ee Meng; Mohd Fareq, Abd Malek, Dr.; Manjur Murshed Zahid, Ahmed; You, Kok Yeow; Lee, K. Y.; Nornikman, H. (Progress in Electromagnetics Research (PIER), 2012)A change in the relative proportions of a mixture of rubber tire dust and rice husks will cause a change in the mixture's electrical permittivity and its ability to absorb electromagnetic energy. An openended coaxial probe ...