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All Journal Jurnal Abdimas: Pengabdian dan Pengembangan Masyarakat International Journal of Wireless And Multimedia Communications
Firdaus Nursal
Politeknik Negeri Padang
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Languange, Linguistic, Communication & Media

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Peningkatan Pemahaman Materi Fisika Kelistrikan Dan Kemagnetan Untuk Siswa SMP Negeri 1 Bukittinggi Menggunakan Rangkaian FM Sederhana Firdaus Nursal
Jurnal Abdimas: Pengabdian dan Pengembangan Masyarakat Vol 4 No 2 (2022)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (268.746 KB) | DOI: 10.30630/jppm.v4i2.911

Abstract

Rangakaian Frequency Radio (FM) sederhana telah digunakan untuk memberikan pengalaman praktis bagi siswa SMP Negeri 1 Bukittinggi. Modul terdiri dari rangkaian yang mudah dipahami dengan menampilkan bentuk komponen asli pada rangkaian. Siswa telah diberikan materi dan video animasi yang membantu siswa meningkatkan pemahanan dan melakukan aktifitas merakit rangkaian pada papan percobaan (breadboard). Hasil pretest dan postest kegiatan pemgabdian ini telah mampu meningkatakan pemahaman siswa dan ketertarikan siswa terhadap mata pelajaran fisika terutama materi kelistrikan dan kemagnetan.
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.  
Multi-band MIMO Antenna with Square-Ring Slots for 5G Services Syaza Ibra Harlin; Firdaus Nursal; Amelia Yolanda
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.
Co-Authors Amelia Yolanda - Dikky Chandra Syaza Ibra Harlin