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All Journal International Journal of Wireless And Multimedia Communications
Syaza Ibra Harlin
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering

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Multi-band MIMO Antenna with Square-Ring Slots for 5G Services Syaza Ibra Harlin; Nursal, Firdaus; Yolanda, Amelia
International Journal of Wireless And Multimedia Communications Vol. 2 No. 2 (2025): 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.v2i2.143

Abstract

Mobile communications technology is evolving rapidly with the introduction of 5G networks, which offer high speeds, low latency, and greater network capacity. To support these services, antennas that can operate optimally in a wide frequency range are required. The objective of this research is to design and analyze a multi-band square-ring slot MIMO antenna operating at frequencies of 2.6 GHz, 3.6 GHz, and 5.25 GHz. The antenna design is performed using CST Studio Suite 2019 software, and the simulation results are compared with the measurement results after fabrication. The antenna structure utilizes a microstrip design with an FR-4 substrate, optimizing parameters such as slot dimensions, feed line positioning, and element spacing to achieve the desired performance. The results show that the designed antenna has a return loss of < -10 dB, VSWR values in the acceptable range (1 ≤ VSWR ≤ 2), mutual coupling isolation below -20 dB, and ECC < 0.05, indicating good MIMO performance. In addition, the antenna exhibits an omnidirectional radiation pattern, a gain of more than 4 dBi with a maximum of 5.25 dBi at 2.6 GHz, and a wide bandwidth suitable for 5G applications. Although there are differences between simulated and measured results due to environmental factors and manufacturing tolerances, the antenna performance remains within acceptable limits. This research proves that the multi-band MIMO design with a square-ring slot can be an effective and practical solution to enhance 5G service quality, offering advantages for future wireless communication systems.
Analysis of Signal Quality Performance on Telkomsel Providers in Simpang Alahan Mati District, Pasaman Regency Syaza Ibra Harlin; Dikky Chandra; Firdaus Nursal
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.v1i2.19

Abstract

The emergence of complaints about the quality of the Telkomsel operator signal such as the received signal is not stable, data access is difficult to connect, and connection failures, so in this study to determine the cause of poor signal quality. Analysis of signal quality was carried out in Simpang Alahan Mati, Pasaman. Analysis was carried out by means of a drive test at the LSK120, LSK174, and LSK030 sites using TEMS Pocket on 3G and 4G networks, by analyzing parameter RSRP, SINR for 4G networks as well as the parameters RSCP and Ec/No to the 3G network. Then the propagation calculation is carried out to compare the value of the received power level measured with the coverage site obtained from the propagation calculation. The signal quality of Telkomsel operators in Simpang Alahan Mati From the measurement results for the 4G network with the average parameter value of RSRP - 102 dBm, and SINR 8 dB. The measurement results on the 3G network with an average value of RSCP parameters -98 dBm and Ec/No -11 dB. From the measurement results based on KPI, it can be seen that the signal quality on the 3G and 4G networks is included in the bad category caused by obstacles in the form of hills and trees from the comparison results of the RSRP and RSCP values measured by the range. site with propagation calculations.  
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; Aulia, Siska; 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 Amelia Yolanda Azhar Dikky Chandra Firdaus Nursal Nadita Wijayani Putri Nasrul Nursal, Firdaus Siska Aulia