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All Journal Jurnal Elementer (Elektro dan Mesin Terapan)
Diono, Muhammad
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Electrical & Electronics Engineering Engineering Mechanical Engineering

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Perbandingan Parameter Return-Loss, VSWR dan Gain Terhadap Elemen Driven Antena Yagi 450 MHz Darwis, Rizadi Sasmita; Azwar, Hamid; Diono, Muhammad
Jurnal ELEMENTER (Elektro dan Mesin Terapan) Vol. 9 No. 2 (2023): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35143/elementer.v9i2.5839

Abstract

Inequality in infrastructure development, especially in rural or rural areas, is the main obstacle for people to access the internet. An antenna capable of operating at the LTE 450 MHz frequency is needed so that the LTE network reaches rural areas and people who live in rural areas are easy to access quality internet services. The radiation pattern possessed by the Yagi antenna is useful for making the Yagi antenna the right solution to solve this problem. In this research, the design and performance comparison of Yagi antennas with different driven elements is carried the gas trhotle on the bicycle handlebar, the brushless motor at the bottom near the bicycle pedal out, namely driven batang aluminium Yagi antennas and driven planar Yagi antennas. The driven batang aluminium Yagi antenna and driven planar Yagi antenna are designed to have 10 elements consisting of 1 reflector element, 1 driven element and 8 director elements and can operate properly at a frequency of 450 MHz. The parameters obtained from the measurement results of the Yagi rod alumminium driven and the planar driven meet the desired specifications. The return-loss values of the aluminium rod driven Yagi antenna and planar driven Yagi antenna at a frequency of 450 MHz are -25.68 dB and -20.09 dB. The bandwidth of the two antennas has met the uplink frequency (452.5 MHz – 457.5 MHz) and downlink frequency (462.5 MHz – 467.5 MHz). The VSWR values of the rod aluminium driven Yagi antenna and the planar driven Yagi antenna are 1.11 and 1.22 with gains of 13.31 dBi and 8.18 dBi, respectively. The radiation pattern of a Yagi antenna with a rode aluminium dan planar driven is directional.
Desain dan Fabrikasi Printed Circuit Board (PCB) Smartband untuk Mengukur Tanda Vital Pada Tubuh Manusia Diono, Muhammad; Sasmita Darwis, Rizadi; Al Fitri, Rahmat
Jurnal ELEMENTER (Elektro dan Mesin Terapan) Vol 10 No 1 (2024): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35143/elementer.v10i1.6312

Abstract

This research addresses the design and fabrication of a Printed Circuit Board (PCB) for a smartband used to measure vital signs on the human body, including heart rate and body temperature. The main objective of this research is to produce a reliable and accurate device in daily health monitoring. The research process includes system design, design validation, PCB fabrication, component assembly, and testing and calibration. Key components, including heart rate and temperature sensors, were selected and integrated using PCB design software. PCB fabrication was performed through photolithography, etching, drilling, and plating processes. The test results show that the designed PCB meets the expected technical specifications.
Co-Authors Al Fitri, Rahmat Azwar, Hamid Rizadi Sasmita Darwis, Rizadi Sasmita Sasmita Darwis, Rizadi