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Jurnal Elektronika dan Telekomunikasi
Published by BRIN Publishing
ISSN : 14118289     EISSN : 25279955     DOI : https://doi.org/10.55981/jet.717
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Jurnal Elektronika dan Telekomunikasi (JET) aims to publish high-quality articles with a specific focus on the latest research and developments in the field of electronics, telecommunications, and microelectronics engineering. It will provide a platform for academicians, researchers and engineers to share their experience and solution to problems in different areas of electronics and telecommunication engineering.
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Articles 309 Documents
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Front Cover Vol. 21 No. 2 Yahya Syukri Amrullah
Jurnal Elektronika dan Telekomunikasi Vol. 21 No. 2 (2021)
Publisher : National Research and Innovation Agency

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Back Cover Vol. 21 No. 2 Yahya Syukri Amrullah
Jurnal Elektronika dan Telekomunikasi Vol. 21 No. 2 (2021)
Publisher : National Research and Innovation Agency

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Wireless Temperature Measurement Validation Method for PCR Machines by Magnetic Hall-Effect Sensor Swivano Agmal; Jalu Ahmad Prakosa; Agus Sukarto Wismogroho
Jurnal Elektronika dan Telekomunikasi Vol. 22 No. 1 (2022)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jet.460

Abstract

The temperature validation controlled by temperature indication has a vital role in the polymerase chain reaction (PCR) test machine or thermal cycler. However, the validation process is complicated for several types of  thermal cycler. Some PCR test machines must close the lid tightly while running. It makes the probe’s cable of the temperature sensor might be pinched or break when the thermal cycler lid is closed. Opening the lid (open-air condition) makes the measurement will not accurate. To solve this problem, wireless temperature measurement and validation methods for PCR machines are developed based on magnetic field measurements. The magnetic field of the object will respond to any changes in temperature. The hall-effect sensor, which is validated by gauss meter, detects any magnetic response a certain material covers even the object. This detection yields output data processed to find the thermal cycler's appropriate temperature wireless validation method. The experiment used a Neodymium magnet as a wireless probe. The position of the Neodymium magnet pole significantly affected the relation between magnetic flux and temperature in experimental results. The reversed pole toward sensors had better linearity (R2= 0.8062) than the unreversed pole (R2= 0.7794). The annealing step commonly achieved the optimum measurement uncertainty. However, the measurement uncertainty and signal sensitivity investigation recommended employing the beneficial combination of pole magnet position to design the temperature validator based on magnetic induction for a closed lid thermal cycler (PCR machine). Overall, the experimental yields can be used to build a wireless temperature validator for a sealed PCR machine based on magnetic induction.
Cross-Coupled Line Bandpass Filter Based on Modified Parallel-Coupled Line Structure Fajri Darwis; Enjel Al Birr Rahayu; Sutrisno Sutrisno; Hanny Madiawati; Taufiqqurrachman Taufiqqurrachman; Arie Setiawan; Erry Dwi Kurniawan; Yusuf Nur Wijayanto
Jurnal Elektronika dan Telekomunikasi Vol. 22 No. 1 (2022)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jet.474

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This paper presents a study of a narrow bandwidth of the bandpass filter with a cross-coupled line structure. This structure was designed to have a good filter selectivity with the transmission zeros and a simple design. Since the structure has a cross shape, cross-coupling between the resonators consequently occurs. This interferes with the passband of the filter. Optimization in the size of the coupled lines and transmission lines was done to minimize the interference. Rogers RT/duroid 5880 was used as a substrate to fabricate the bandpass filter to verify the proposed design. As a result, the fabricated cross-coupled line bandpass filter has an 80 MHz of 3 dB bandwidth with operating frequency ranges from 2.97 GHz to 3.05 GHz. The bandwidth is reduced by 20 % from the specification.It shows that the cross-coupled line structure can yield a narrow bandwidth. Based on the 3 dB bandwidth, the center frequency is shifted 0.33 % above the specification. Meanwhile, the return loss and insertion loss of the proposed bandpass filter successfully comply with the required specifications. In conclusion, the proposed bandpass filter can be applied to S-Band applications that require narrow bandwidth.
Development of FMCW Radar Signal Processing for High-Speed Railway Collision Avoidance Farra Anindya Putri; Dayat Kurniawan; Rahmawati Hasanah; Taufiqurrahman Taufiqurrahman; Eko Joni Pristianto; Hana Arisesa; Yusuf Nur Wijayanto; Deni Permana; Winy Desvasari; Ken Paramayudha; Arief Budi Santiko; Dadin Mahmudin; Pamungkas Daud; Fajri Darwis; Erry Dwi Kurniawan; Arie Setiawan; Tajul Miftahushudur; Prasetyo Putranto; Syamsu Ismail
Jurnal Elektronika dan Telekomunikasi Vol. 22 No. 1 (2022)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jet.482

Abstract

Collision is the main issue in safe transportation, including in the railway system. Sensor systems have been developed to detect obstacles to prevent a collision, such as using cameras. One disadvantage of the camera systems is that performance detection decreases in a not clean environment, like the target position behind the fogs. This paper discusses the development of frequency modulated continuous wave (FMCW) radar signal processing for high-speed railway collision avoidance. The development of radar signal processing combines a two-dimensional constant false alarm rate (2D-CFAR) and robust principal component analysis (RPCA) to detect moving targets under clutter. Cell average (CA) and Greatest of CA (GOCA) CFAR are evaluated under a cluttered wall environment along the railway track. From the experiment, the development of FMCW radar can detect stationary or moving obstacles around 675 meters in front of the locomotive. Combining 2D-CFAR and RPCA algorithm outperforms average background subtraction in extracting moving targets from strong clutter signals along the railway track.
Cooperative Line Formation Control of Multi-Agent Systems Based on Least Squares Estimation Samratul Fuady; Arumjeni Mitayani; Ario Birmiawan Widyoutomo; Arief Suryadi Satyawan; Alexander Christanto Budiman; Suyoto Suyoto; Mochamad Mardi Marta Dinata
Jurnal Elektronika dan Telekomunikasi Vol. 22 No. 2 (2022)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jet.490

Abstract

In this paper, we consider the problem of multi-agent systems where each agent aims to establish a line formation in a distributed manner. In constructing an efficient line formation, finding a line with the closest total distance from every agent is essential. We propose a formation control using least squares estimation (LSE) performed by each agent with only the local information that consists of the corresponding agent’s and neighbors’ positions. Each agent calculates the local cost function, which is the squared distance from the LSE line to the related agent’s and its neighbors’ positions. Our goal is to minimize the global cost function, which is the sum of these local cost functions. To achieve this, we employ distributed optimization to the global cost function of the overall system using the subgradient method performed by each agent locally. We evaluate our proposed method using numerical simulation, and the result complies with our goal of this paper
Preface Vol. 22 No. 1 Salita Ulitia Prini
Jurnal Elektronika dan Telekomunikasi Vol. 22 No. 1 (2022)
Publisher : National Research and Innovation Agency

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Appendix Vol. 22 No. 1 Salita Ulitia Prini
Jurnal Elektronika dan Telekomunikasi Vol. 22 No. 1 (2022)
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Front Cover Vol. 22 No. 1 Chaeriah Bin Ali Wael
Jurnal Elektronika dan Telekomunikasi Vol. 22 No. 1 (2022)
Publisher : National Research and Innovation Agency

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Back Cover Vol. 22 No. 1 Chaeriah Bin Ali Wael
Jurnal Elektronika dan Telekomunikasi Vol. 22 No. 1 (2022)
Publisher : National Research and Innovation Agency

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Page 22 of 31 | Total Record : 309

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