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All Journal Communications in Science and Technology Buletin Ilmiah Sarjana Teknik Elektro Jurnal Pengabdian Masyarakat Nasional
Baharuddin, Mohd Hafiz
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Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering

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A review of measurement of electromagnetic emission in electronic product: Techniques and challenges Yuwono, Tito; Baharuddin, Mohd Hafiz; Misran, Norbahiah; Ismail, Mahamod; Mansor, Mohd Fais
Communications in Science and Technology Vol 7 No 1 (2022)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.7.1.2022.727

Abstract

Nowadays, electronic products are being used extensively in many fields and applications. The dense population of electronic devices in human life has become a challenge for microwave engineers to ensure that their products can meet the Electromagnetic Compatibility (EMC) standards. Complex electronic products with smaller sizes and denser components will be a challenge for compliance with EMC standards. In addition, the occurrence of non-stationary emission at certain operating modes becomes a challenge for analysis. Error in analyzing EM emissions will make the products unable to meet the requirements of EMC standards; hence, they will be prohibited to be marketed. Currently, there are two methods of emission analysis, i.e. by measurement and modeling or computation. There are some problems, however, in the analysis of EM emissions regarding the area of test, complexity, DUT positioning error, installation cost, and time consumption. In this paper, the analysis techniques for EM emissions including Open Area Test Site (OATS), Anechoic chamber, Transverse Electromagnetics TEM Cell, Compact Antenna Test Range (CATR) and near field scanning are reviewed comprehensively. This survey covered EMC standards, principles of EM emission measurement techniques, advantages and disadvantages of EM emission measurement techniques, studies and applications of each technique, recommendations for which technique to be used, and challenges for future research in EM emission measurement. The final section of this paper discusses the challenges for near-field measurements related to the non-stationary emissions phenomenon. This papers also presents the challenges of how to detect and characterize them.
On the characterization of EM emission of electronic products: Case study for different program modes Yuwono, Tito; Baharuddin, Mohd Hafiz; Zhivomirov, Hristo; Wahyuni, Elyza Gustri
Communications in Science and Technology Vol 9 No 1 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.1.2024.1289

Abstract

The characterization of the EM emissions for electronic products is crucial to ensure that the emissions have met the requirements of the EMC standards. For this, a more comprehensive testing is required to get more meaningful results. While, the emergence of non-stationary emissions is a challenge to obtain valid analysis results. So far, non-stationary EM emissions is not considered and treated properly in the emission analysis. This paper presents a new method for the analysis of EM emissions from electronic devices as a case study by testing three different program modes (scenarios) of Intel Galileo board. These program modes were designed to vary processing intensity in its memory and processor. A comparison was also made between the actual situation (the presence of non-stationary signals) and the hypothetical situation with the assumption that all emissions were stationary. As a result, a significant difference was observed when the analysis considered the real scenario of a non-stationary emission. The ratio between the average autocorrelation using the proposed algorithm and the average correlation by ignoring the non-stationarity of the emission signal was 113.6 times. The study concludes that different program modes produce the different characteristics of EM emissions, making some of them non-stationary. Hence, we strongly suggest the consideration of the non-stationarity of the EM emissions in characterizing complex electronic devices.
High Accuracy Dual Probe Station for Near Field Scanning Yuwono, Tito; Baharuddin, Mohd Hafiz
Buletin Ilmiah Sarjana Teknik Elektro Vol. 5 No. 4 (2023): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/biste.v5i4.9132

Abstract

Electromagnetic (EM) emissions are a major issue for electronic products. Besides electronic products being able to work according to their function, they must also comply with EMC standards to avoid producing excessive EM emissions. One technique for measuring EM emissions is near field measurements. This measurement technique can be used to determine the faulty components which contribute to the failure of complying to the EMC standards. A near field measurement system consists of near field probes, digital oscilloscope, and a probe station which can control the movement of the near field probe during measurement process. In this paper, the design and development of a dual probe near field measurement system or station with high accuracy will be discussed. From instrument testing, it can be concluded that the probe station can cover ample scanning area with movement accuracy up to 0.05 mm and it is able to work well according to the test scenario. The designed probe station is verified by measurement and highly recommended to be used for near field measurements.
PENINGKATAN KAPASITAS TATA KELOLA, PEMBUATAN MEDIA PENGAJARAN DAN APLIKASI BERGERAK UNTUK GURU SANGGAR BELAJAR MUHAMMADIYAH KUALA LUMPUR Yuwono, Tito; Nuryanta, Nanang; Husain, Abdullah; Setiawan, Agus; Baharuddin, Mohd Hafiz
Jurnal Pengabdian Masyarakat Nasional Vol 5, No 2 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/pemanas.v5i2.36418

Abstract

Paper ini mendiskusikan pelaksanaan pengabdian masyarakat untuk anak-anak Pekerja Migran Indonesia (PMI), khususnya di sanggar belajar Muhammadiyah Kuala Lumpur. Aktifitas pengabdian meliputi workshop pengelolaan pendidikan non formal, pembuatan media pengajaran menggunakan canva, pembuatan aplikasi bergerak dan bijak menggunakan handphone. Tujuan dari pengabdian ini adalah meingkatkan pemahaman dan kesadadaran dalam pengelolaan lembaga pendidikan serta meningkatkan inovasi pengajaran sehingga proses pembelajaran lebih efektif dan menarik. Dari hasil evaluasi menunjukkan bahwa 100% para guru meraasakan  ketiga topik pelatihan dibutuhkan. Untuk dua topik tata kelola dan Canva, 100% peserta memahami dengan baik. Sementara untuk topik pembuatan aplikasi bergerak hanya 60% yang memahami materi yang diberikan. Pengabdian ini sangat diperlukan oleh pengelola dan guru di lembaga pendidikan tersebut serta bermanfaat dalam banyak aspek, baik dari sisi kesadaran tata kelola yang professional maupun memantik kreatifitas para guru.
Co-Authors Agus Setiawan Elyza Gustri Wahyuni Husain, Abdullah Mahamod Ismail Mansor, Mohd Fais Nanang Nuryanta, Nanang Norbahiah Misran Tito Yuwono, Tito Zhivomirov, Hristo