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All Journal Jurnal Ilmiah Poli Rekayasa Jurnal Informatika dan Teknik Elektro Terapan Journal of Applied Computer Science and Technology (JACOST) Brilliance: Research of Artificial Intelligence Electron: Jurnal Ilmiah Teknik Elektro Jurnal Abdimas: Pengabdian dan Pengembangan Masyarakat International Journal of Advanced Science Computing and Engineering International Journal of Wireless And Multimedia Communications JURNAL PENGABDIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (JP3L) PERFECT: Journal of Smart Algorithms
Amelia Yolanda
Jurusan Teknik Elektro Politeknik Negeri Padang
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Languange, Linguistic, Communication & Media Library & Information Science Mathematics Social Sciences Other

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Journal : International Journal of Wireless And Multimedia Communications

 1 
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.
Multiple Input Multiple Output Slot Antenna Design  With -22 Db Isolation Without Decoupling Structure For Application On Ultra Wide Band Marselina, Nadilla; Septima, Uzma; Yolanda, Amelia; 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.
Co-Authors Adila Asril , Aprinal Adrian, Fachri Alfarezi, Muhammad Amelia Yolanda - Aprinal Adila Asril Armenda, Annisa Aulia Ramadhani - Candra, Dikky Deddy Prayama Deni Satria Deri Latika Herda Dikky Chandra Guswita, Nadia Herda, Deri Latika Kasmar, Andre Febrian Lifwarda Lifwarda Lisyadi Oktapianus, Yoppi Marselina, Nadilla Naz Surya, Gardinia Nursal, Firdaus Popy Maria Putri, Dwi Kemala Rahmadi Kurnia Rikki Vitria Roni Putra Siska Aulia Syaza Ibra Harlin Ummul Khair Uzhelia, Viorryn Aisha Uzma Septima Valentino, Riski Yuhefizar Yuhefizar Yulindon Y Yustini Zurnawita Zurnawita