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All Journal Electron: Jurnal Ilmiah Teknik Elektro International Journal of Wireless And Multimedia Communications
Amelia Yolanda -
Politeknik Negeri Padang
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy

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Perancangan dan Implementasi Broadband Wireless Acces Berbasis 802.11ac pada Jaringan Provider Zettalink Guswita, Nadia; Yolanda, Amelia; Khair, Ummul; Lisyadi Oktapianus, Yoppi
ELECTRON Jurnal Ilmiah Teknik Elektro Vol 5 No 2: Jurnal Electron, November 2024
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/electron.v5i2.231

Abstract

Broadband Wireless Access (BWA) is a type of wireless local area network known for its ability to support a large number of users, wide coverage, and high speed, in accordance with the IEEE 802.16 standards. As the demand for stable and fast internet access continues to grow, some areas, including Lembah Gumanti District, face challenges in developing telecommunications infrastructure. This research aims to establish a BWA network to enhance the quality of connectivity in the district. Most current WLAN networks operate on the 2.4GHz frequency using the IEEE 802.11g and 802.11n standards, which often experience interference issues. In this study, the IEEE 802.11ac standard, which operates exclusively on the 5GHz frequency, is employed to avoid interference associated with the 2.4GHz range and support channel widths of up to 80MHz, thereby improving network efficiency. Zettalink is strategically positioned to implement BWA technology based on 802.11ac in rural areas like Lembah Gumanti. Unlike the expensive and subscription-based WiMAX technology, 802.11ac offers more affordable access solution for rural regions. The network is designed using a Point-to-multipointmethod with sectoral and omnidirectional Antennas, tailored to the hilly and humid geographical conditions of Lembah Gumanti. The primary focus of this research includes network design with the UISP Design Center, analysis of the application of sectoral Antennas using Ubiquiti LiteBeam M5, and calculations of device receiving power. The main challenges in this implementation include the risk of interference due to humid weather and high rainfall, as well as the high costs associated with the procurement of equipment
Multiple Input Multiple Output Slot Antenna Design  With -22 Db Isolation Without Decoupling Structure For Application On Ultra Wide Band Nadilla Marselina; Uzma Septima; Amelia Yolanda; Yustini Yustini
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.v1i2.53

Abstract

Technology that is always evolving requires us to always make the latest innovations, one of which is in the field of telecommunications. Currently, multiple input multiple output (MIMO) technology is widely used in ultra wideband (UWB) systems to overcome the effects of multipath fading. Multiple antennas are used to increase channel capacity. Two-element MIMO UWB systems have several techniques for obtaining good isolation between antenna elements. In this final project, the design and analysis of the change of a single UWB slot antenna into a 2-element MIMO UWB antenna is carried out by placing the antenna elements asymmetrically to get high antenna isolation. The proposed UWB MIMO antenna has a very compact size of 42×25 mm2. The fed slot microstrip antenna acts as a single UWB antenna element. Antenna design using CST Study Suite software. In the simulation results, a single UWB slot antenna that is modified into a UWB MIMO antenna has a return loss of -28 dB, a bandwidth of 7.2514 GHz, isolation below -20 dB, a VSWR of VSWR 2 in the frequency range of 3.7002 GHz to 9.6546 GHz, the gain reaches 3.2 dBi, and radiation pattern which is quasi omnidirectional.
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 Firdaus Nursal Guswita, Nadia Lisyadi Oktapianus, Yoppi Nadilla Marselina Syaza Ibra Harlin Uzma Septima - Yustini