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All Journal Jurnal Edukasi Elektro JURNAL ELEKTRO Jurnal SOLMA Journal of Telecommunication, Electronics and Control Engineering (JTECE) Academia Open
Ayu Mika Sherila
Universitas Pembangunan Nasional Veteran Jakarta
Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering Medicine & Pharmacology Public Health Other

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T-Shaped MIMO Antenna Design with Defected Ground Structure and Parasitic Elements for 5G Application Sherila, Ayu Mika; Umaisaroh, Umaisaroh; Alaydrus, Mudrik
Journal of Telecommunication Electronics and Control Engineering (JTECE) Vol 7 No 1 (2025): Journal of Telecommunication, Electronics, and Control Engineering (JTECE)
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/jtece.v7i1.1618

Abstract

5G technology is designed to improve efficiency, network capacity, data rate, and coverage with low power consumption. This requires the design of suitable antennas for 5G wireless communications to achieve optimal bandwidth, radiation, efficiency, and performance. MIMO antenna designs use multiple antennas and face the main challenge of reducing mutual coupling between adjacent antenna elements. In this study, the MIMO antenna is designed using T-shaped DGS Technique and parasitic elements. The DGS technique is developed by creating a specific area on the ground plane of the antenna to improve its performance. By incorporating DGS concepts and parasitic elements into the design, the aim is to achieve large bandwidth and high gain. This antenna has dimensions of 52 mm x 12 mm and is simulated using Ansys HFSS software. Measurement results for the antenna using Rogers Duroid RT5880 substrate show a mutual coupling value of -54.2 dB, return loss of -11.1 dB, gain of 13.11 dB, and a sufficiently wide bandwidth. Thus, the proposed antenna can operate at a frequency of 28 GHz, meeting the requirements for 5G applications.
MIMO Antenna Design with Defected Ground Structure and Stub Slot for 5G Application Sherila, Ayu Mika
Journal of Telecommunication Electronics and Control Engineering (JTECE) Vol 7 No 2 (2025): Journal of Telecommunication, Electronics, and Control Engineering (JTECE)
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/jtece.v7i2.1969

Abstract

5G technology has been developed to address challenges and meet the demands for improved network efficiency and capacity, higher data rates, wider coverage, and lower power consumption. Therefore, an appropriate antenna design is essential for 5G wireless communication, capable of providing wide bandwidth, optimal radiation patterns, high antenna efficiency, and overall strong performance. The Multiple-Input Multiple-Output (MIMO) system, which utilizes multiple transmitting and receiving antennas, allows for more effective exploitation of multipath propagation. However, closely spaced antenna elements can lead to mutual coupling. Thus, the main challenge in designing MIMO antennas is to minimize the effects of mutual coupling. In this study, a MIMO antenna was designed using the Defected Ground Structure (DGS) technique and stub slots. The DGS technique was applied by modifying the antenna's ground plane to enhance its performance. To achieve wide bandwidth and high gain, the DGS and stub slot concepts were integrated into the antenna design. The antenna has dimensions of 84 mm × 34 mm and was simulated using Ansys HFSS software. The testing results showed that the antenna with an FR4 Epoxy substrate achieved a mutual coupling value of –30.65 dB, a return loss of –14.15 dB, a gain of 5.23 dB, and a sufficiently wide bandwidth. Therefore, this antenna is considered capable of operating at a frequency of 3.5 GHz and meets the requirements of 5G communication systems.
Implementation of Low-Cost Smart Waste Bin with Fuzzy Logic Control Using MQ-2 and HY-SRF05 Sherila, Ayu Mika; Martini, Ni Putu Devira Ayu
Jurnal Edukasi Elektro Vol. 9 No. 2 (2025): Jurnal Edukasi Elektro Volume 9, No. 2, November 2025
Publisher : DPTE FT UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jee.v9i2.88875

Abstract

Urban waste management systems often fail to address hygiene and efficiency when relying on conventional bins or rigid threshold-based controllers. This paper presents a low-cost smart trash bin that integrates dual-sensor fuzzy logic control to adaptively regulate lid positions in real time. Unlike prior designs dependent on a single sensing modality, the proposed system fuses odor intensity (via MQ-2 gas sensor) and fill-level data (via HY-SRF05 ultrasonic sensor) within a Sugeno-type fuzzy inference framework. The controller supports five graded lid positions, ranging from fully closed to fully open, ensuring nuanced and hygienic responses to varying environmental conditions. Experimental validation across 25 scenarios yielded robust performance, with maximum errors below 9% and an average deviation of only 1.91%. The most accurate results were observed in the fully closed state, while the highest deviations occurred in the almost closed position due to mechanical limitations and nonlinear actuator behavior. Despite these drawbacks, the system consistently demonstrated adaptive decision-making and stable operation, confirming its suitability for real-world applications. Furthermore, comparative analysis against threshold-based and AI-based controllers reveals that the fuzzy approach achieves superior adaptability and near-ANN accuracy while maintaining computational efficiency compatible with Arduino-based platforms. These findings establish fuzzy sensor fusion as a practical pathway toward sustainable, IoT-enabled, and educationally relevant waste management solutions, paving the way for integration into future smart city infrastructures
Penerapan Konsep Pemrograman dan Komputasi Numerik dalam Pembelajaran di SMK Yadika 12 Depok melalui Aplikasi MATLAB Sherila, Ayu Mika; Krisnawati, Luh; Martini, Ni Putu Devira Ayu; Tarigan, Amenda Septiala; Janan, Syifaul; Yongkimandalan, Nicky; Jonesti, Wilfadri Putra
Jurnal SOLMA Vol. 14 No. 3 (2025)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/solma.v14i3.20339

Abstract

Background: Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pemahaman dan keterampilan siswa SMK Yadika 12 Depok dalam bidang pemrograman dan komputasi numerik melalui pemanfaatan aplikasi MATLAB. Metode: Melalui pendekatan pelatihan langsung, sebanyak 33 siswa dari jurusan Teknik Jaringan Komputer dan Telekomunikasi dilibatkan dalam berbagai sesi pelatihan, mulai dari instalasi MATLAB, operasi dasar aritmetika, pembuatan grafik 2D/3D, hingga pemodelan sistem menggunakan persamaan diferensial. Hasil: Hasil evaluasi menunjukkan peningkatan skor rata-rata dari 68,79 (pre-test) menjadi 88,79 (post-test), dengan 88% siswa menunjukkan peningkatan signifikan. Data ini menegaskan bahwa penggunaan MATLAB secara praktis dapat memperkuat pemahaman konsep-konsep teknis yang sebelumnya bersifat abstrak. Selain itu, kegiatan ini berkontribusi terhadap tujuan SDG`s   atau Tujuan Pembangunan Berkelanjutan, khususnya dalam mendukung pendidikan berkualitas dan kesiapan kerja. Program ini juga menjadi sarana transfer pengetahuan antara perguruan tinggi dan sekolah vokasi. Kesimpulan: Secara keseluruhan, program ini tidak hanya berkontribusi pada peningkatan hasil belajar, tetapi juga berperan strategis dalam menyiapkan generasi siswa yang melek digital dan siap kerja.
Performance Evaluation of Delay and Jitter in Optical Fiber Networks for Real-Time Multimedia Applications Sherila, Ayu Mika; Mulyadi, Melisa
Jurnal Elektro Vol 18 No 2 (2025): Jurnal Elektro: October 2025
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v18i2.7230

Abstract

The increasing reliance on real-time services such as VoIP and video streaming underscores the critical role of fiber optic networks as high-capacity communication backbones. While optical fibers offer substantial bandwidth, this alone does not ensure optimal Quality of Experience (QoE); network delay and jitter remain prominent challenges that can disrupt audio clarity and video continuity. This paper presents a detailed analysis of delay and jitter phenomena within fiber optic systems, particularly emphasizing Passive Optical Network (PON) topologies. It explores the underlying causes of performance degradation from physical-layer limitations to architectural inefficiencies and critically assesses current mitigation techniques implemented at both the network level (e.g., Quality of Service mechanisms) and application level (e.g., jitter buffering strategies). The main contribution of this work is the introduction of a novel "Cross-Layer Performance Optimization Framework," which addresses the disconnect between static QoS enforcement and reactive application adaptations. By fostering dynamic interaction between the network and application layers, this framework aims to enable predictive control mechanisms that better safeguard user experience. Ultimately, this approach offers a pathway to more robust and efficient delivery of real-time services over next-generation optical access networks.
Development of Independent Learning Skills Through the Electrical Teaching Program at Mifasol: Pengembangan Keterampilan Belajar Mandiri Melalui Program Pengajaran Listrik di Mifasol Ni Putu Devira Ayu Martini; Ayu Mika Sherila; Achmad Zuchriadi; Yosy Rachmawati; Galang Kenda Pradana; Putri Setyarini; Siti Choiriyah; Bella Sherlyana; Arif Amarudin
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11155

Abstract

Independent learning has become a crucial competency in the digital era, especially in STEM fields, where adaptability and self-direction are essential. Specifically, underprivileged and out-of-school children face barriers in acquiring such skills due to limited access to formal education. While prior research explores project-based and collaborative learning in formal settings, there remains a knowledge gap in connecting informal community-based STEM programs to national curriculum goals for marginalized learners. This study aims to examine the development of independent learning skills through the Electrical Engineering Teaching Program (TEMA) at Rumah Belajar MiFasol, a community initiative targeting educational equity. Results from participatory observation, questionnaires, and interviews with 22 participants reveal that 63.6% found the program highly beneficial, 72.7% were actively engaged, and 90.9% desired future iterations. The novelty lies in TEMA’s alignment with the Indonesian National Curriculum in an informal context, integrating core competencies and practical STEM activities like the ice cream experiment to stimulate curiosity and critical thinking. The implications suggest that structured, informal educational interventions—rooted in national standards—can bridge educational disparities and cultivate learner autonomy among underserved populations.Highlight : Empowering Out-of-School Students: The Electro Teaching Program provides access to STEM education for underprivileged children, fostering independent learning and self-confidence. Interactive and Practical Approach: Activities such as experiments and games make learning engaging and effective, aligning with national education standards. Positive Impact and Feedback: Over 90% of participants expressed high satisfaction, showing strong interest in continuing the program. Keywords : Education, Innovative Learning, STEM Program, Electro Teaching, Independent Learning
Implementing IoT-Based Smart Garden System at SMP Al Izhar: Menerapkan Sistem Taman Pintar Berbasis IoT di SMP Al Izhar Yosy Rahmawati; Achmad Zuchriadi; Ni Putu Devira Ayu Martini; Ayu Mika Sherila
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11246

Abstract

General Background: The integration of Internet of Things (IoT) technology in agriculture presents new opportunities for sustainable practices and hands-on education. Specific Background: However, its implementation in junior high school curricula, particularly as a practical environmental learning tool, remains limited. Knowledge Gap: Most schools lack access to real-world IoT-based applications that foster student engagement with digital literacy and environmental awareness simultaneously. Aims: This study aimed to design and implement an IoT-based Smart Garden system for automatic irrigation and lighting at SMP Al Izhar Pondok Labu, while evaluating its educational and technological impacts. Results: The program involved 50 participants who built functional Smart Garden prototypes using sensors and microcontrollers, resulting in significant gains in STEM motivation (+1.1), understanding of IoT (+1.2), and its application in agriculture (+1.2). Novelty: The innovation lies in integrating project-based learning with low-cost IoT hardware to create a replicable educational model that combines STEM skills, environmental education, and digital literacy. Implications: The success of this initiative highlights the potential of IoT-enhanced environmental projects to enrich school-based learning, strengthen 21st-century competencies, and inspire broader adoption of smart, sustainable practices in education.Highlight : The program introduced IoT-based Smart Garden systems to junior high school students through hands-on workshops, fostering practical STEM skills. Students showed a 25% increase in understanding and motivation, based on pre- and post-test assessments, highlighting educational impact. The initiative provides a replicable model for integrating environmental and digital literacy in school curricula, promoting sustainability. Keywords : Automatic Irrigation, Environmental Sustainability, Internet of Things (IoT), Smart Garden, STEM Education
Education on the Application of Electrical Technology Through Creative Learning Projects: Pendidikan tentang Penerapan Teknologi Listrik Melalui Proyek Pembelajaran Kreatif Ayu Mika Sherila; Ni Putu Devira Ayu Martini; Achmad Zuchriadi; Yosy Rahmawati
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11723

Abstract

General Background: The rapid advancement of technology demands innovative approaches in education to equip students with essential STEM competencies. Specific Background: In Indonesia, high school learning of electrical engineering is still dominated by theoretical instruction with limited opportunities for hands-on practice, resulting in low engagement and inadequate technical skill development. Knowledge Gap: Few initiatives integrate real-world electrical engineering applications into secondary education through creative, project-based learning. Aim: This study reports on the implementation and evaluation of a creative learning outreach program conducted by Universitas Pembangunan Nasional Veteran Jakarta at SMA Negeri 66 Jakarta, designed to enhance students’ understanding of electrical technology. Results: The program engaged 72 students through three interactive modules: portable solar power storage, a mechatronic sumo robot, and IoT-based drowsiness detection glasses. Evaluation results showed a 28% increase in interest toward STEM careers, a 35% improvement in conceptual understanding, and positive perceptions of program delivery. Novelty: Unlike conventional lectures, this initiative combined project-based learning with real-world prototypes, directly linking theory with application and fostering creativity, collaboration, and problem-solving. Implications: These findings highlight the value of integrating interactive, technology-driven projects into secondary education, offering a scalable model for strengthening STEM literacy and preparing future engineers.Highlight : Hands-on modules (solar power, sumo robot, IoT glasses) increased student engagement. Survey showed 28% higher STEM interest and 35% better understanding of technology. Program effectively connected theory with real-world applications in electrical engineering. Keywords : Education, Creative Learning Project, Electrical Technology, Project-Based Learning, STEM
Co-Authors Achmad Zuchriadi Arif Amarudin Bella Sherlyana Galang Kenda Pradana Jonesti, Wilfadri Putra Krisnawati, Luh MARTINI, NI PUTU DEVIRA AYU Melisa Mulyadi Mudrik Alaydrus Ni Putu Devira Ayu Martini Ni Putu Devira Ayu Martini Putri Setyarini Siti Choiriyah Syifaul Janan Tarigan, Amenda Septiala Umaisaroh Umaisaroh Yongkimandalan, Nicky Yosy Rachmawati Yosy Rahmawati Yosy Rahmawati Yosy Rahmawati