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All Journal Elektron Jurnal Ilmiah ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JURNAL NASIONAL TEKNIK ELEKTRO Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) INOVTEK Polbeng - Seri Informatika Jurnal Elektronika dan Telekomunikasi Journal of Information Technology and Computer Engineering Indonesian Journal of Electrical Engineering and Computer Science Andalas Journal of Electrical and Electronic Engineering Technology Jurnal Endurance: Kajian Ilmiah Problema Kesehatan Jurnal Andalas: Rekayasa dan Penerapan Teknologi INOVTEK Polbeng - Seri Informatika ASEAN Journal for Science and Engineering in Materials
Ikhwana Elfitri
Andalas University
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Other

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Analysis of Path Loss In 802.11ac Data Communication at 5.8 Ghz Frequency in Padang City YULISWAR, TEDDY; Elfitri, Ikhwana; W purbo, Onno
INOVTEK Polbeng - Seri Informatika Vol. 9 No. 2 (2024): November
Publisher : P3M Politeknik Negeri Bengkalis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/63fn5597

Abstract

This research aims to analyze path loss in data communication using the 802.11ac standard at a frequency of 5,185 MHz in the city of Padang. We collected data on environmental parameters, including air temperature ranging from 24.44°C to 31.11°C, relative humidity between 77% and 96%, dew point from 24.4°C to 26.11°C, and wind speed, over a period of four consecutive weeks. Additionally, we measured technical network parameters like signal strength, noise, and throughput at a 1.5 km distance between two towers, each measuring 28 meters and 25 meters in height. Environmental conditions, particularly humidity and wind speed, influence path loss, according to the research results. In the measurement, the received signal varies from -44 dBm to -49 dBm, while the noise is in the range of -90 dBm to -92 dBm. The throughput generated also varies between 259.2 Mbps and 295.2 Mbps. We discovered that high humidity and low wind speed lead to an increase in throughput, suggesting that weather conditions influence the quality of data transmission. This research provides important insights into the planning and optimization of 802.11ac wireless networks in urban areas, particularly for improving service quality under various environmental conditions
Impact of Relative Humidity on Electrochemical Performance of MXene-Zn-CNC Composite Films Fernandez, Rudy; Abral, Hairul; Elfitri, Ikhwana
ASEAN Journal for Science and Engineering in Materials Vol 4, No 2 (2025): AJSEM: Volume 4, Issue 2, September 2025
Publisher : Bumi Publikasi Nusantara

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Abstract

This study examines the influence of relative humidity (RH) on the electrochemical and structural properties of polyvinyl alcohol (PVA) composite films reinforced with MXene, zinc oxide (ZnO), and cellulose nanocrystals (CNC). Composite films were fabricated via solvent casting and conditioned at RH levels of 50%, 75%, and 94%. Cyclic voltammetry and four-point probe tests revealed substantial enhancements in current density, specific capacitance, and bulk conductivity with increasing RH, attributed to improved ionic mobility and interfacial polarization. X-ray diffraction indicated reduced crystallinity due to polymer swelling, while scanning electron microscopy showed enhanced MXene dispersion at higher RH. Fourier-transform infrared spectroscopy confirmed intensified hydroxyl interactions, reflecting increased hydrophilicity. These humidity-induced improvements suggest promising applications in humidity-responsive flexible electronics and sensors. However, potential trade-offs include reduced mechanical stability under prolonged exposure. The findings offer new insights for optimizing hydrophilic polymer composites to enhance environmental adaptability and advanced device performance. 
Peningkatan Kualitas Syiar Islam Melalui Penggunaan Multimedia di Mushalla Al-Mahira, Kelurahan Aie Pacah Baharuddin, Baharuddin; Elfitri, Ikhwana; Fernandez, Rudy; Andre, Hanalde; Ramadhamy, Queen Hesti; Budi, Baik; Nofendra, Riko; Luthfi, Amirul
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 5 No. 2 (2025): Desember 2025
Publisher : Electrical Engineering Department Faculty of Engineering Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v5i2.131

Abstract

Kegiatan Pengabdian kepada Masyarakat (PkM) oleh Kelompok Bidang Keahlian (KBK) Telekomunikasi, Departemen Teknik Elektro, Fakultas Teknik Universitas Andalas dilaksanakan dengan tujuan mendukung peningkatan kualitas syiar Islam melalui pemanfaatan teknologi multimedia di Mushalla Al-Mahira, Kelurahan Aie Pacah. Program yang dilaksanakan pada 22 November 2025 ini berfokus pada penyediaan dan pengenalan perangkat teknologi, terutama sistem audio dan multimedia, sebagai sarana pendukung dakwah yang lebih efektif dan menarik. Kegiatan dipimpin oleh Baharuddin, MT, dengan dukungan Ketua Program Studi Teknik Elektro, Dr. Eng. Primas Emiraldi, serta partisipasi dosen KBK Telekomunikasi lainnya. Tim PkM memberikan perangkat sound system serta satu unit vacuum cleaner sebagai upaya peningkatan fasilitas mushalla, sekaligus memberikan pelatihan penggunaan perangkat agar dapat dimanfaatkan secara optimal. Hasil kegiatan menunjukkan bahwa penerapan teknologi multimedia mampu meningkatkan kualitas penyampaian materi dakwah, memperbaiki kenyamanan jamaah, dan memperkuat kapasitas pengurus mushalla dalam pengelolaan sarana ibadah. Program ini menegaskan peran penting perguruan tinggi dalam transfer teknologi kepada masyarakat sebagai bagian dari pelaksanaan tridarma akademik.
Co-Authors Abral, Hairul Adriani Mahdarlis Afriwardi Yusri Aggrivina Dwiharzandis Ahmad Ridwan Amirul Luthfi Amirul Luthfi, Amirul Arina widya ASMITA, MELIA Atika, Ratna Baharuddin Baharuddin Budi, Baik Cipto Prabowo Cipto Prabowo Evi Hasnita Fauzan Mustaqim Firdaus Firdaus Firdaus Firdaus Habib Satria Hanalde Andre Ida Ayu Putu Sri Widnyani IHSAN, ROZAKY Ikhsan, Intan Aprillia Intan Aprilia Ikhsan Meza Silvana Muhammad Aditya Aditya Nikhaldo Muhammad Sobirin Mustaqim, Fauzan Onno Widodo Purbo Pratama, Rizki Wahyu Purbo, Onno Widodo Rahmadi Kurnia Ramadhamy, Queen Hesti Ratna Atika Riko Nofendra Rudy Fernandez Sobirin, Muhammad Syariful Ikhwan Vitral JR W purbo, Onno Wardhani, Aditya Yoppi Lisyadi Oktavianus Yuliswar, Teddy Zurnawita Zurnawita Zurnawita Zurnawita Zurnawita Zurnawita