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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 Bulletin of Electrical Engineering and Informatics Bulletin of Electrical Engineering and Informatics Indonesian Journal of Electrical Engineering and Computer Science
Zahriladha Zakaria
Universiti Teknikal Malaysia Melaka (UTeM)
Computer Science & IT Electrical & Electronics Engineering Engineering

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Ultra-wide band antipodal Vivaldi antenna design using target detection algorithm for detection application Sajjad Ahmed; Ariffuddin Joret; Norshidah Katiran; Muhammad Faiz Liew Abdullah; Zahriladha Zakaria; Muhammad Suhaimi Sulong
Bulletin of Electrical Engineering and Informatics Vol 12, No 4: August 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v12i4.5081

Abstract

This work presents a technique for detecting targets between two walls using ultra-wide band (UWB) modified antipodal Vivaldi antenna (MAVA). The detection system works on principle of time domain reflectrometry (TDR) using through wall imaging (TWI). This technique utilized a vector network analyzer (VNA) to produced short and small pluses to irradiate through an antenna array system onto the wall under study. The purposed detection system operated in UWB frequency spectrum (3.1 GHz to 10.6 GHz). Furthermore, an algorithm for hidden target detection has been developed. The results of the simulation of the designed antenna revealed a significant level of penetration, demonstrating a smart advancement in detecting and imaging system, to locate hidden metallic targets with good accuracy. A signal processing technique have been employed to improve the resolution of the target image. Using computer simulation technology (CST) software, the development and optimization process of an antenna is carried out, and the parametric performance of return loss, directivity and radiation pattern is evaluated.
Improving gain of ultra-wideband planar antennas: a grounded frequency-selective surface reflector Ahmed Jamal Abdullah Al-Gburi; Zahriladha Zakaria; Khaled Alhassoon; Imran Mohd Ibrahim; Jamil Abedalrahim Jamil Alsayaydeh
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 21, No 6: December 2023
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v21i6.25312

Abstract

This paper introduces a method to enhance the gain of ultra-wideband (UWB) planar antennas by employing a grounded frequency-selective surface (FSS) as a reflector. The grounded FSS reflector comprises square patch structures (SPSs) of unit cells with a complete ground plane. The designed FSS utilizes miniaturized unit cells that are printed on both sides of an FR4 substrate, making it highly suitable for a wide range of applications, particularly as a reflector to optimize the gain of UWB omnidirectional radiators. This concept is demonstrated by employing a circular monopole UWB antenna as the radiator. The measured outcomes of the suggested antenna with the grounded FSS maintain a broad frequency range of bandwidth of 9.162 GHz, spanning from 2.638 GHz to 11.8 GHz. The antenna, in combination with the FSS, achieves a significant measured gain of 7.6 dBi and a high efficiency of 93% at 9.6 GHz. The attributes of the suggested UWB FSS make it an ideal solution for seamless combining with small-sized broadband circuits, thereby maximizing its effectiveness.
Co-Authors A. A. Md Isa A. Ahmad A. R. Othman Abdullah M. Zobilah Adib Othman Adib Othman Ahmed Ismail Abu-Khadrah Ahmed Jamal Abdullah Al-Gburi Ahmed M. Dinar Amirul Aizat Zolkefli Ammar Alhegazi Anwar Faizd Osman Ariffuddin Joret Azahari Salleh Badrul Hisham Ahmad Faza Syahirah Mohd Noor Herwansyah Lago Herwansyah Lago Huda A. Majid Huda A. Majid Imran Mohd Ibrahim Ismail Bin Mohd Jamil Abedalrahim Jamil Alsayaydeh Khaled Alhassoon M . K. Abdulhameed M. K. Abdulhameed Maizatul Alice Meor Said Mohamad Harris Misran Mohamad Zoinol Abidin Abd Aziz Mohd Fareq Abdul Malek Mohd Haizal Jamaluddin Mohd Khairy Ismail Mohd Mawardy Abdullah Mohd Nor Husain Mothana L. Attiah Mowafak K. Mohsen Muhajir Mustapa Muhammad Faiz Liew Abdullah Muhammad Suhaimi Sulong Mussa Mabrok Naim Che Pee Nasrullah Saifullah Noor Azwan Shairi Nornikman Hassan Norshidah Katiran Nur Ishmah Sabirah Shaari Nurhasniza Edward Nursyahirah Mohd Sanusi Rammah A. Alahnomi Rammah A. Alahnomi S. Alani Sajjad Ahmed Sam Weng Yik Sameer Alani Sharif Ahmed Siti Nadzirah Salleh Tole Sutikno Yosza Dasril Yully Erwanti Masrukin Yully Masrukin