Mohamed Nasrun Osman
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Preferred name
Mohamed Nasrun Osman
Official Name
Mohamed Nasrun, Osman
Alternative Name
Nasrun Osman, Mohamed
Osman, Mohamad N.
Nasrun Osman, Mohd
Osman, Mohamed N.
Osman, Mohamed
Osman, M. N.
Main Affiliation
Scopus Author ID
57189062688
Researcher ID
HKW-4543-2023

Research Output

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  • Publication
    A multilayered acoustic signal generator for low power energy harvesting
    ( 2017-10-10)
    Awal M.R.
    ;
    Muzammil Jusoh
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Thennarasan Sabapathy
    ;
    Mohamed Nasrun Osman
    ;
    Mohd Ilman Jais
    ;
    Kamarudin M.R.
    This paper presents the design and analysis of a multilayer cantilever to harvest vibration energy by generating acoustic signal. To do so, a five layer configuration is used to design the cantilever. Lead Zirconate Titanate (PZT-8), Stainless Steel 405 Annealed, Aluminum and Zinc Oxide are used to develop the layers. Water is used as the medium to analyze the sound propagation pattern. Sound Pressure Level, displacements and electric potential of the cantilever are analyzed along with other parameters. From the results, it is evident that, the proposed cantilever can propagate sound within a range of 78.7 dB to 73.4 dB in a 50 mm spherical distance.
  • Publication
    Design of Reconfigurable Antenna for RFID System
    ( 2021-07-26)
    Renukka Sivakumar
    ;
    Thennarasan Sabapathy
    ;
    Muzammil Jusoh
    ;
    Soh Ping Jack
    ;
    Mohamed Nasrun Osman
    ;
    Salem Al-Bawri S.
    ;
    Jayaprakasam S.
    ;
    Mohd Najib Mohd Yasin
    ;
    Saluja N.
    This paper proposes a reconfigurable antenna for RFID system which can operate between 860MHz to 960MHz frequency that belongs to ultra-high frequency (UHF) band used in Malaysia with the center frequency of 910MHz. One rectangular slot and two triangle-shaped slots are used in designing this antenna. A good circular polarization obtained from the slotted structure along the diagonal axis in the design. RF pin diodes are used as the switching mechanism of the antenna. However, in this work to proof the concept of switching mechanism, copper pins are used as artificial switches. Parasitic elements are deployed on the right and left side of the driven element to assist the radiation pattern reconfiguration. Overall, the proposed antenna able to steer the beam at approximately at -30 , -16 , and 10 with peak gain of 3.2dB and average gain of 2.5dB. With this result, overall coverage of UHF RFID reader antenna could be improved.
  • Publication
    Flexible Co-Planar Waveguide (CPW)-Fed Y-Shaped Patch UWB Antenna for Off-Body Communication
    ( 2020-03-18)
    Kassim S.
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Soh Ping Jack
    ;
    Abdulmalek M.
    ;
    Muzammil Jusoh
    ;
    Jamaluddin M.H.
    ;
    Sabli N.S.
    ;
    Yassin M.N.
    ;
    Thennarasan Sabapathy
    ;
    Wee Fwen Hoon
    ;
    Mohamed Nasrun Osman
    ;
    Ismail N.
    This paper intends to design an Ultra-Wideband (UWB) antenna for future Internet of Things (IoT) applications for off-body Wireless Body Area Networks (WBAN) communication. An antenna based on the Y-shaped patch fed using co-planar waveguide (CPW) line, with a full ground plane is designed. It is implemented on two different substrates, namely a 5mm thick Rogers RO4350B and a 5-mm-thick felt textile. Parametric analysis of antenna is performed by changing its critical dimensions and monitoring parameters such as gain, bandwidth, efficiency, radiation pattern when using both substrates. Besides that, the bending effects towards reflection coefficient and radiation patterns are also studied. The final patch size with the Y-shaped slot is 36 × 40 mm2 for both substrates. The antenna is capable of providing coverage for the bands from 8 to 10 GHz. Finally, the antenna designed on RO4350B substrate outperforms the antenna designed on felt by about four times in terms of bandwidth, with 3.3 GHz (7.7-11 GHz).
  • Publication
    Gain Enhancement of Rectangular Dielectric Resonator Antenna Using Air Gap
    ( 2023-10-06)
    Shanmuka Rooban Gunasekaran
    ;
    Thennarasan Sabapathy
    ;
    Muzammil Jusoh
    ;
    R Badlishah Ahmad
    ;
    Mohamed Nasrun Osman
    ;
    Saidatul Norlyana Azemi
    ;
    Nur Farhan Kahar
    ;
    Wan Zuki Azman Wan Muhamad
    ;
    Saravanan Nathan Lurudusamy
    This paper presents a gain enhanced rectangular dielectric resonator antenna (DRA) using air gap. The air gap placed under the dielectric resonator antenna and above the ground plane. A gain of 6.605 dBi obtained from the DRA with air gap while gain of 5.956 dBi is achieved by DRA without air gap. The size of the antenna is approximately 50 mm by 40 mm, thus it can be considered a compact design. This antenna designed using Rogers RO4003 substrate and the DRA material is Eccostock HIK. All the design and simulation results are conducted using CST Studio Suite 2019 software. Based on the result, it shows that the antenna operates with reflection coefficient of less than -10 dB at the desired operating frequency range, centered at 3.5 GHz. The inclusion of air gap proved that it can enhance the gain value of the DRA.
      2  3
  • Publication
    Investigation on the Mutual Coupling Reduction in MIMO Antenna using Dual Split CSRR EBG
    ( 2021-07-26)
    Alsayaghi A.
    ;
    Thennarasan Sabapathy
    ;
    Muzammil Jusoh
    ;
    Kabir Hossain
    ;
    R Badlishah Ahmad
    ;
    Mohamed Nasrun Osman
    ;
    Jayaprakasam S.
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Raghava N.S.
    In many applications, it is now desirable to prevent a device from being affected by an external electromagnetic field or prevent the device's intrusion into the electromagnetic field. The elimination or reduction of coupling between neighbouring systems is desired, and this is achieved through the use of electromagnetic shields and absorbers. This project focuses on an investigation that analysed the band-gap region for unit cell EBG simulation and unit cell array simulation. It is revealed that unit cell simulation provides an accurate result where the band-gap region is from 2 GHz to 3.5 GHz. The performance of the EBG is validated using a microstrip MIMO antenna. Using EBG, the S21 is reduced from -18.63 dB to -28.80 dB. Meanwhile, the MIMO antenna gain with the proposed EBG is 2.78 dBi, greater than MIMO antenna without EBG (2.47 dBi).
      1  16
  • Publication
    Radiation Pattern Reconfigurable MIMO Antenna with EBG for Improved Steering Performance
    ( 2023-01-01)
    Gopalakrishnan J.B.
    ;
    Thennarasan Sabapathy
    ;
    Mohamed Nasrun Osman
    ;
    Muzammil Jusoh
    ;
    Kavitha K.
    This paper presents a radiation pattern reconfigurable (RPR) multiple-input-multiple-output (MIMO) antenna with an electromagnetic band gap (EBG) for improved steering performance. The designed RPR-MIMO operates at 3.5 GHz with S11 < -10 dB, S21 < -15 dB, steered angle of more than 19° and a minimum average gain of 5 dBi at all steered directions. The proposed EBG structure improved the steering angle that is affected when the RPR is deployed as the MIMO.
      18  1
  • Publication
    Smart IoT Flood Monitoring System
    ( 2019-12-16)
    Binti Zahir S.
    ;
    Ehkan P.
    ;
    Thennarasan Sabapathy
    ;
    Muzammil Jusoh
    ;
    Mohamed Nasrun Osman
    ;
    Mohd Najib Mohd Yasin
    ;
    Abdul Wahab Y.
    ;
    Hambali N.A.M.
    ;
    Ali N.
    ;
    Bakhit A.S.
    ;
    Husin F.
    ;
    Mohd Khairul Md Kamil
    ;
    Jamaludin R.
    Flood is one of the natural disasters that cannot be avoided. It happens too fast and affected so many lives and properties. Before this, most of the existing system that has been developed are only focus on certain areas. Other than that, majority of the public cannot monitor and have no idea when the flood going to be happened since they do not have any information and data about the weather condition. By having Smart IoT Flood Monitoring System, this will solve all the drawbacks of the existing system. The proposed system is suitable for cities and village areas. Furthermore, if the public has an internet access, they can monitor what is happening and predict if there is any upcoming flood at the web server. The proposed system is a low cost in design and easy for maintenance. This project will update the water level at the web server and the system will issue an alert signal to the citizens for evacuation so that fast necessary actions can be taken.
      21  1
  • Publication
    Orbital Angular Momentum Vortex Waves Generation Using Textile Antenna Array for 5G Wearable Applications
    ( 2022-01-01)
    Noor S.K.
    ;
    Mawardi Ismail A.
    ;
    Mohd Najib Mohd Yasin
    ;
    Mohamed Nasrun Osman
    ;
    Ramli N.
    The development of wireless systems for fifth-generation technology (5G) has enabled the use of textile antennas for a wide range of applications, and it has now become one of the world's most in-demand technology. As the number of wireless devices and users increase, operators would need higher channel capacity to deliver better possible service to their customers. This paper presents the generation of Orbital Angular Momentum (OAM) vortex waves with mode 1 using a wearable textile antenna. OAM introduces a new scheme called Mode Domain Multiple Access (MDMA). OAM mode is an orthogonal mode with each mode carrying individual signals. Therefore, multiple signals can be sent using the same carrier frequency without additional resources. This allows the channel capacity and spectrum efficiency to be enhanced. The proposed antenna array comprises rectangular microstrip patch elements with an inset fed technique. Felt textile fabric was used as an antenna substrate. A carefully planned feeding phase shift network was used to excite the elements by supplying similar output energy at output ports with the required phase shift value. The generated OAM waves were confirmed by measuring the null in the boresight direction of their 2D radiation patterns as well as simulated phase distribution, intensity distribution and mode purity. The antenna covered portions of the 5G n77 band with a bandwidth of 81.7 MHz and an overall gain of 2.9 dBi. This is, to the best of our knowledge, the first work on generating OAM waves using a flexible textile material.
      1  25
  • Publication
    Narrowband to Narrowband Frequency Tunable Slotted Dipole Antenna
    ( 2021-03-01)
    Rabbil Izziety Mohd Rodi
    ;
    Mohamed Nasrun Osman
    ;
    Mohammad Kamal Abd Rahim
    ;
    Muzammil Jusoh
    ;
    Thennarasan Sabapathy
    ;
    Azremi Abdullah Al-Hadi
    ;
    Soh Ping Jack
    In this paper, the slotted dipole antenna structure is proposed to have four narrowband frequencies with ability to be reconfigured. Narrowband reconfiguration can be achieved by controlling the length of slotted dipole by using switches. The narrowband frequency is to be at 1.8 GHz (GSM), 2.4 GHz (WLAN), 2.6 GHz (4G), and 3.5 GHz (5G) respectively. The longest dipole length produced 1.8 GHz, the second-longest dipole length produced 2.4 GHz, the third-longest dipole length produced 2.6 GHz, while the smallest dipole length produced 3.5 GHz. To maintain the stability of the RF current in the system, sixteen capacitors were used. As well eight inductors were used to isolate the RF current and power supply. The PIN diode was used as a switch to allow the induced current to stop and pass into the slot which means that it can be used to select the desired frequency. Depending on switching configuration, the operating frequency is tuned. Good matching is achieved for all configurations. The simulated result of gain for the four operating is higher than 2 dB while the omnidirectional radiation pattern has been obtained thus makes the proposed antenna suitable for wireless application.
      6  1
  • Publication
    Design of a Compact Reconfigurable Antenna with Hybrid Polarization and Frequency Control for Geofencing Application
    ( 2023-01-01)
    Kandasamy U.D.
    ;
    Thennarasan Sabapathy
    ;
    Muzammil Jusoh
    ;
    Mohamed Nasrun Osman
    A frequency reconfigurable antenna for location monitoring is proposed. The antenna developed can be reconfigured at two frequencies with suitable polarization and radiation pattern which designed for geofencing application, thus it either can operate at 1.575 GHz band or 2.45 GHz band. The expected outcome of this work is that when the user is within the geo-fence area it will use WIFI, while when the user exits the geo-fence area, GPS application will be selected. With the use of two switches, the antenna can operate either at band from 2.335 GHz to 2.593 GHz for S11< -10 dB and from 1.546 GHz to 1.588 GHz at S11 <-6 dB. The axial ratio results of less than 3 dB is achieved at 1.575 GHz with a bandwidth of 20 MHz.
      12  48