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All Journal International Journal of Electrical and Computer Engineering TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Indonesian Journal of Electrical Engineering and Computer Science
Zahriladha Zakaria
Universiti Teknikal Malaysia Melaka
Computer Science & IT Electrical & Electronics Engineering

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Journal : Bulletin of Electrical Engineering and Informatics

 1 
Design of a dual-band antenna for energy harvesting application Maizatul Alice Meor Said; Syed Mohd Iqwan Naqiuddin Syed Jaya; Zahriladha Zakaria; Mohamad Harris Misran; Mohd Muzafar Ismail
Bulletin of Electrical Engineering and Informatics Vol 10, No 6: December 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i6.3203

Abstract

This report presents an investigation on how to improve the current dual-band antenna to enhance the better result of the antenna parameters for energy harvesting application. Besides that, to develop a new design and validate the antenna frequencies that will operate at 2.4 GHz and 5.4 GHz. At 5.4 GHz, more data can be transmitted compare to 2.4 GHz. However, 2.4 GHz has long distance of radiation, so it can be used when far away from the antenna module compare to 5 GHz that has short distance in radiation. The development of this project includes the scope of designing and testing of antenna using computer simulation technology (CST) 2018 software and vector network analyzer (VNA) equipment. In the process of designing, fundamental parameters of antenna are being measured and validated, in purpose to identify the better antenna performance.
Switchable bandstop to allpass filter using cascaded transmission line SIW resonators in K-band Amirul Aizat Zolkefli; Noor Azwan Shairi; Badrul Hisham Ahmad; Adib Othman; Nurulhalim Hassim; Zahriladha Zakaria; Imran Mohd Ibrahim; Huda A. Majid
Bulletin of Electrical Engineering and Informatics Vol 10, No 5: October 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i5.2835

Abstract

In this paper, a switchable bandstop to allpass filter using cascaded transmission line SIW resonators is proposed. The switchable filter is performed by the switchable cascaded transmission line SIW resonators using discrete PIN diodes. Therefore, it can be used for rejecting any unwanted frequencies in the communication systems. The proposed filter design is operated in K-band and targeted for millimeter wave front end system for 5G telecommunication. Two filter designs with different orientation (design A and B) are investigated for the best performance and compact size. As a result, design B is the best by giving a maximum attenuation of 39.5 dB at 26.4 GHz with the layout size of 33×30 mm.
Effect of the defected microstrip structure shapes on the performance of dual-band bandpass filter for wireless communications Mussa Mabrok; Zahriladha Zakaria; Yully Erwanti Masrukin; Tole Sutikno; Hussein Alsariera
Bulletin of Electrical Engineering and Informatics Vol 10, No 1: February 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i1.2662

Abstract

Due to the progression growth of multiservice wireless communication systems in a single device, multiband bandpass filter has attract a great attention to the end user. Therefore, multiband bandpass filter is a crucial component in the multiband transceivers systems which can support multiple services in one device. This paper presents a design of dual-band bandpass filter at 2.4 GHz and 3.5 GHz for WLAN and WiMAX applications. Firstly, the wideband bandpass filter is designed at a center frequency of 3 GHz based on quarter-wavelength short circuited stub. Three types of defected microstrip structure (DMS) are implemented to produce a wide notch band, which are T-inversed shape, C-shape, and U-shape. Based on the performance comparisons, U-shaped DMS is selected to be integrated with the bandpass filter. The designed filter achieved two passbands centered at 2.51 GHz and 3.59 GHz with 3 dB bandwidth of 15.94% and 15.86%. The proposed design is very useful for wireless communication systems and its applications such as WLAN and WiMAX.
High gain antenna at 915 MHz for off grid wireless networks Hussam Hamid Keriee; Mohamad Kamal A. Rahim; Nawres Abbas Nayyef; Zahriladha Zakaria; Ahmed Jamal Abdullah Al- Gburi; Fahad Taha Al-Dhief; Mustafa M. Jawad
Bulletin of Electrical Engineering and Informatics Vol 9, No 6: December 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v9i6.2192

Abstract

This paper presents a high gain antenna for off-grid wireless networks at 915 MHz. The requirements for compact size and high gain antenna are needed in the industrial, scientific and medical (ISM) band for better performance and coverage. Hence, microstrip planar substrate is proposed to overcome the size challenges. The proposed antenna is designed based on rectangular patch with air gap technique. The proposed antenna is optimized using computer simulation technology software (CST) and fabricated on low profile FR-4 substrate. The measured performance agreed well with the simulated one. The reflection of less than -10 dB is obtained with high gain of 6.928 dB at desired frequency. Overall, this antenna can be a good candidate for the off-grid wireless network applications. 
Design of triple band antenna for energy harvesting application Siti Nur Illia Abdullah; Mohd Muzafar Ismail; Jeefferie Abd Razak; Zahriladha Zakaria; Siti Rosmaniza Ab Rashid; Nor Hadzfizah Mohd Radi
Bulletin of Electrical Engineering and Informatics Vol 11, No 4: August 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v11i4.3686

Abstract

Energy harvesting is a fast-expanding topic in many scientific and engineering-related disciplines due to the extreme necessity to discover answers to the world's power challenges. This paper focuses on the design of a novel antenna that will operate at frequencies of 2.45 GHz, 4.5 GHz, and 5.725 GHz. The study shows the improvement of the current triband antenna for energy harvesting applications by varying the antenna parameters. The return loss, the voltage standing wave ratio (VSWR) and the radiation pattern for the antenna at all frequencies 2.45 GHz, 4.5 GHz, and 5.725 GHz have been compared in the results. The scope of this project development comprises the antenna design utilizing simulation software, computer simulation technology (CST) 2019 and vector network analyzer (VNA) test instrument for physical testing. During the design process, fundamental antenna characteristics were estimated and validated to determine optimal performance of an antenna for this project.
Recent development of planar microwave sensor for material characterization of solid, liquid, and powder: a review Harry Sucitra Roslan; Maizatul Alice Meor Said; Zahriladha Zakaria; Mohamad Harris Misran
Bulletin of Electrical Engineering and Informatics Vol 11, No 4: August 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v11i4.4120

Abstract

Microwave is the most popular sensor in industrial applications for detecting material characterization. Over the past decade, microwave sensor is high demand, especially in medical for detecting cancer in the human body, agriculture for detecting moisture of soil, and freshness in the food industry. The previous study has shown that the high demands of the microwave sensor in industrial applications make researchers always think of new ideas to design microwave sensors to improves accuracy and sensitivity. This paper reviews an investigation of material characterization of recent developments of a planar sensor for various contaminants and parameter value of solid, liquid, and powder as material under test (MUT). Planar resonator sensor enhances the weakness of conventional sensors in bulky size, required a large volume of samples, and high cost. This planar sensor will differentiate MUT properties based on scattering parameters at various operating frequencies. The framework presented in this review paper includes new developments in resonator structure as well as advanced design of potential future research work. Previous studies will be objectively analysed and compared in order to gain a better understanding of microwave resonant sensors and to develop innovative concepts to further enhance application research involving material characterization.
Co-Authors Abdul Hamid Hamidon Abdul Rani Othman Adib Othman Ahmed Jamal Abdullah Al- Gburi Amirul Aizat Zolkefli Amyrul Azuan Mohd Bahar Amyrul Azuan Mohd Bahar Azlinda Ahmad Azman Ahmad Azmi Awang Md Isa Badrul Hisham Ahmad Fahad Taha Al-Dhief Harry Sucitra Roslan Hasnizom Hassan Huda A. Majid Hussam Hamid Keriee Hussein Alsariera Imran Mohd Ibrahim J.S. Hamidon Jeefferie Abd Razak Kamil Pongot Lavanya Paramasivam Mahamod Ismail Maisarah Abu Maizatul Alice Meor Said Maizatun Muhamad Mawarni Mohamed Yunus Md Nazri Othman Mohamad Ariffin Mutalib Mohamad Harris Misran Mohamad Kadim Suaidi Mohamad Kamal A. Rahim Mohd Muzafar Ismail Mohd Muzafar Ismail Mohd Shahril Ahmad Khiar Mothana L Attiah Mussa Mabrok Mustafa M. Jawad Natasha Binti Abd Hamid Nawres Abbas Nayyef Noor Azwan Shairi Nor Fadzilah Abdullah Nor Hadzfizah Mohd Radi Norhanani Abd Rahman Nur Hidayu Abdul Rahim Nur Zawani Saharuddin Nurhana Abu Hussin Nurhasniza Edward Nurulhalim Hassim Nurzaimah Zainol Rammah Alahnomi Rosdiadee Nordin Rosemizi Abd Rahim Siti Nur Illia Abdullah Siti Rosmaniza Ab Rashid Syed Mohd Iqwan Naqiuddin Syed Jaya Tole Sutikno Yosza Dasril Yully Erwanti Masrukin Zikri Abadi Baharudin