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All Journal Jurnal Ilmiah Poli Rekayasa Elektron Jurnal Ilmiah Jurnal Teknik Elektro Manutech : Jurnal Teknologi Manufaktur Journal of Innovation Information Technology and Application (JINITA) International Journal of Wireless And Multimedia Communications
Nasrul
Politeknik Negeri Padang
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Design of Rectangular Patch Microstrip Antenna with Rectangular Slot on 2.4 GHz Ground plane for Wifi Application Gebriola Permata Isra; Nasrul Nasrul; Yulindon Yulindon
International Journal of Wireless And Multimedia Communications Vol. 1 No. 1 (2024): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v1i1.3

Abstract

This research aims to design a rectangular patch microstrip antenna design with rectangular slots on the 2.4 GHz ground plane for Wi-Fi applications using CST Studio Suite 2019 software and antenna measurements using Vector Network Analyser. Some of the antenna parameters produced are return loss, bandwidth, VSWR, radiation pattern, and gain.  This antenna has a rectangular patch shape and has a ground plane that has a rectangular slot. The antenna is designed on a circuit board (PCB) with a permittivity of 4.6 and a thickness of 1.6 mm. The antenna is designed based on the characteristics of several antenna parameters, namely having a return loss-10 dB gain value ≥1 dB, and VSWR < 2 dB. After several simulations, the results at a frequency of 2.4 GHz obtained a return loss value of -14.84 dB, a bandwidth of 53 MHz, a VSWR value of 1.442, a gain of 2.063 dbi, and has a Unidirectional radiation pattern. The measurement of the fabricated microstrip antenna using a Vector Network Analyser shows a return loss value of -11.68 dB, and a VSWR of 1.747 dB.
Rectifier Antenna (Rectenna) Microstrip Rectangular Patch Slot Horizontal On Television Signal Reception With Ultra High Frequency (UHF) Channeled Nasrul Nasrul; Afrizal Yuhanef; Latifah Hanum
International Journal of Wireless And Multimedia Communications Vol. 1 No. 1 (2024): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v1i1.8

Abstract

This study aims to design and test a Rectangular miscrostrip Rectifier antenna for  television signal reception in the Ultra High Frequency (UHF) pathway. The research method includes designing antenna designs and designing Voltage Multiplier rectifier circuits. The antenna  parameters  measured include working frequency,  Return Loss, Bandwidth, VSWR, Antenna Impedance, Polarization, and Gain. The results showed that  the Return Loss  value in the frequency range of  540-884 MHz had a value of ≤-10dB, with the lowest value of -26,868 dB at a frequency of 598 MHz in the simulation results. After fabrication,           the Return Loss  value in the frequency range of 632-785 MHz has a value of ≤-10dB, with the lowest value of -42,375 dB at a frequency of 668 MHz.   or transmissions  connected to it. The antenna impedance  was 50.60Ω in the  simulation results  and 51.107 Ω in the measurement results.
Serial Rectifier Antenna (Rectenna) Microstrip Patch Circular 2.4 Ghz For Radio Frequency Energy Harvester Nadya Friska Friska; Nasrul Nasrul; Rikki Vitria
International Journal of Wireless And Multimedia Communications Vol. 1 No. 1 (2024): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v1i1.9

Abstract

The source of Radio Frequency  (RF) electromagnetic wave energy in the atmosphere is currently abundant and wasted due to the rapid development of RF technology today. Utilizing the rectenna system to harvest energy, this RF energy source can be used as an environmentally friendly distribution method. To improve the rectenna's ability to convert electromagnetic waves into direct voltage (DC) sources, a rectenna antenna  system was designed using a serial rectenna system. using 3 antennas and 3 rectifier circuits, to design a  serial rectenna system. A circular patch microstrip antenna with a frequency of 2.4 GHz is used in serial receiving systems to receive WiFi signals.  Schottky 2860 diodes and 1nF smd capacitors are used in the 6-stage voltage multiplier of the rectifier circuit,  which is used in the rectifier.  Round patch microstrip antennas were found to be capable of capturing and directing voltage to DC through testing and measurement of rectenna serial systems. The system antenna has return loss values of -26.29 dB, -21.75 dB, and -28.57  dB,  VSWR 1.11,  1.16, and 1.07,  impedance 51.1,  55.56, and    50.22, and bandwidth of 60 MHz .  The resonant frequencies for 60 MHz and 50 MHz are 2.42 GHz, 2.36 GHz, and 2.48 GHz. so that at a distance of 25 cm a single rectenna system produces a voltage of 51 points 3 mV. During this time, the serial receiver system can change a direct voltage of  151.08 mV at a distance of 25 cm from the Access Point transmitter source.
Quality Of Service (QOS) Analysis on LTE Networks Time Division Duplex and Frequency Division Duplex Technology Rizki Aulia; Dikky Chandra; Yulian Mirza; Nasrul; Miro Dhino
International Journal of Wireless And Multimedia Communications Vol. 1 No. 2 (2024): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v1i2.22

Abstract

Quality of service is a method of measuring a network and attempts to define a characteristic used to provide good service. The increasing use of mobile technology has a rapid impact on the development of technology and information. These developments relate to the use of customized information and communication services in a direct, practical and effective manner. In response to these issues, researchers are interested in conducting research by looking at the parameters of Time Division Duplex (TDD) technology at a frequency of 2300 MHz and Frequency Division Duplex (FDD) at a frequency of 900 MHz on the download service. The results of quality of service measurements on LTE networks are carried out in real time in the field by comparing each QoS parameter against a predetermined path from the eNodeB point based on RSRP and SINR with different conditions. In both TDD and FDD technology. The effect of RSRP on Quality of Service parameters in each cell measured. One of them is PCI 328, when the RSRP condition is measured - 80 dBm, the throughput value is 9466.29 Kbps, latency 0.84 ms, jitter 0.028 ms and packet loss 0%. Conversely, when the RSRP condition is measured - 100 dBm, the throughput is 4084.16 Kbps, latency 1.68 ms, jitter 0.059 ms and packet loss 0.50%. Then the effect of SINR on Quality of Service parameters in 2 different modulations is seen in each cell measured. One of them is PCI 328, when the SINR condition is measured at 20 dBm, the throughput value is 9074.99 Kbps, latency 0.86 ms, jitter 0.034 ms and packet loss 0%. Conversely, when the SINR condition measured 12 dB then the throughput is 4239.58 Kbps, latency 0.88 ms, jitter 0.027 ms and packet loss 0.03%. Based on the results obtained the throughput value of LTE TDD has a better value on the download service and has a better throughput value.
Analysis of Long-Term Evolution (LTE) Propagation Pathloss Calculation and Pathloss Simulation in Lubuk Minturun Urban Village, Koto Tangah Sub-District, Padang Syaza Ibra Harlin; Nadita Wijayani Putri; Nasrul; Siska Aulia; Azhar
International Journal of Wireless And Multimedia Communications Vol. 1 No. 2 (2024): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v1i2.42

Abstract

Good signal quality is characterized by the small amount of propagation path loss or path loss that occurs. These propagation path losses can be caused by the distance between the site and the receiver (mobile station), transmitter frequency, natural conditions, and weather conditions. The farther between the site and the receiver (mobile station), the greater the propagation path loss. The use of propagation models in planning a site development in an area can predict or consider the value of propagation path losses, such as the Okumura-Hatta and COST-231 propagation models. Measurement of signal quality received by the receiver (mobile station) in the making of this final project using the drive test method. Determination of site coordinates in the measurement makes it easier to calculate the distance between the site and the mobile station. The calculation of the Okumura-Hatta propagation model and the COST-231 propagation model will produce a better-received power level value compared to the received power level value in the measurement. This is because the calculation only considers the distance between the site and the receiver (mobile station) without any obstacles or barriers, while the value generated during measurement will be influenced by distance, obstacles or barriers, earth contours, and weather conditions. One of them is Lubuk Minturun Village where the measurement of propagation path loss (Pathloss) is carried out due to the poor quality of the 4G Long Term Evolution (LTE) network.
Co-Authors Afrizal Yuhanef Azhar Azhar Dikky Chandra Gebriola Permata Isra Herisajani Herisajani Herry setiawan Latifah Hanum Maimuzar Maimuzar Miro Dhino Muhammad Putra Pamungkas Nadita Wijayani Putri Nadya Friska Friska Rahmi Berlianti Rikki Vitria Rizki Aulia Siska Aulia Sonya Purna Faradisya Syaza Ibra Harlin Witrionanda Witrionanda Yandrika Putra Yulian mirza Yulindon