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All Journal International Journal of Electrical and Computer Engineering Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Jurnal Simetris TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal EECCIS Sinergi Journal of ICT Research and Applications Jurnal Teknologi Elektro Proceeding of the Electrical Engineering Computer Science and Informatics InComTech: Jurnal Telekomunikasi dan Komputer Techne : Jurnal Ilmiah Elektroteknika Jurnal Abdi Masyarakat (JAM) Jurnal Ilmu Teknik dan Komputer Indonesian Journal of Electrical Engineering and Computer Science International Journal of Advanced Technology in Mechanical, Mechatronics and Material (IJATEC) Journal of Telecommunication, Electronics and Control Engineering (JTECE) Journal of Integrated and Advanced Engineering (JIAE) Jurnal Impresi Indonesia Journal of Informatics and Communication Technology (JICT) Jurnal Rekayasa elektrika Molekul: Jurnal Ilmiah Kimia Journal of Informatics and Communication Technology (JICT) Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics Journal of Innovation and Community Engagement Jurnal Elektronika dan Telekomunikasi
Mudrik Alaydrus
Universitas Mercu Buana
Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences

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Monitoring of Blood Cholesterol Measurement System Using ICT-Based Non-Invasive Methods Oktariadi, Nanda; Alaydrus, Mudrik
Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics Vol. 5 No. 4 (2023): November
Publisher : Jurusan Teknik Elektromedik, Politeknik Kesehatan Kemenkes Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35882/ijeeemi.v5i4.186

Abstract

Coronary heart disease is a public health problem because of its very high morbidity and mortality, the death rate caused by coronary heart disease is quite high in the world, including in Indonesia. This study aims to analyze and develop and realize the application of non-invasive blood cholesterol measurement based on ICT. Contribution of this research is that it can be used as a reference or recommendation for developing a non-invasive ICT-based blood cholesterol measurement system. The research method used in this study is the library study method and the experimental method. The results of this study are: (1) The monitoring system for measuring blood cholesterol levels Non-invasive methods using near infrared technology can be implemented properly and can be monitored based on ICT using webBase; (2) Tests were carried out on 25 random samples with two conditions, conditions before eating and conditions after eating and compared with the invasive method (auto check), found an accuracy value in conditions before eating of 98.47% with an error value of 1.53%, while in the condition after eating found an accuracy of 98.55% with an error value of 1.45%; (3) Testing the blood cholesterol level detection tool with Non-invasive shows a more real time with a duration of 10 seconds until the results are displayed on the LCD screen, while with an invasive method it shows a measurement duration of 26 seconds until the results are displayed on the screen. (4) Based on this test, a non-invasive cholesterol level measuring device can be used as a reference in the development of a blood cholesterol measurement tool so that it can be an option for routine measurements.
Enhanced Microwave Absorbing Characteristics of Cerium Barium Ferrite Composite: Effect of Sintering Temperature Variation Widanarto, Wahyu; Tamtowi, Tomy; Effendi, Mukhtar; Rahmawati, Dina; Supriyanti, Retno; Ghoshal, Sib Krishna; Kurniawan, Candra; Jatmika, Jumaeda; Handoko, Erfan; Umar, Lazuardi; Alaydrus, Mudrik
Molekul Vol 20 No 3 (2025)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2025.20.3.17825

Abstract

ABSTRACT. Cerium barium ferrite composites (CeBFCs) with improved microwave absorbance in the X-band spectral region are advantageous for varied advanced applications. Thus, the influence of various sintering temperatures on the microwave-absorbing traits of CeBFCs was evaluated. The main objective was to enhance the selective microwave absorption of BFC by modifying its magnetic properties through the substitution of Fe³⁺ with Ce³⁺ in the lattice structures. Four composites of CeBF were synthesized via mechanical alloying and sintered at 600, 800, 1000, and 1100°C. The produced samples were analyzed using XRD, VSM, and VNA to determine their microstructures, magnetic properties, and microwave reflection loss at X-band frequencies. XRD results revealed a significant promotion in forming a more pure crystalline barium hexaferrite phase at sintering temperatures higher than 800°C. This structural enhancement could directly influence the magnetic properties of the specimens with a progressive increase in the saturation magnetization with rising sintering temperature. In addition, the sintering temperature variation effectively modulated the electromagnetic properties (complex relative permeability and permittivity) that are vital for impedance matching and optimal wave absorption. The composite sintered at 1000°C displayed an optimal microwave absorption, indicating the lowest reflection loss within the X-band. The obtained products were shown to attenuate and dissipate surplus electromagnetic energy within the 8-12 GHz frequency range. The observed superior performance of the composites was ascribed to a balanced interplay between the magnetic and dielectric losses, leading to efficient impedance matching. It was affirmed that careful tuning of the sintering temperature can improve the crystalline phases, magnetic, electromagnetic, and microwave absorption properties of the proposed CeBFCs. Keywords: Cerium barium ferrite, Microwave absorption, Reflection loss, Sintering temperature, X-band
An ultra-broadband microstrip antenna using a triple dumbbell-shaped defected ground structure Haryanto, Puji; Astuti, Dian Widi; Alaydrus, Mudrik; Firdausi, Ahmad; Rusdiyanto, Dian; A Majid, Huda
SINERGI Vol 30, No 1 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2026.1.008

Abstract

Microstrip antennas are widely used in modern communication systems due to their compact size and low profile. However, they typically suffer from narrow bandwidth, limiting their performance in advanced wireless applications. This study addresses this limitation by employing a triple dumbbell-shaped defected ground structure (DGS). The antenna is designed to operate at 3.5 GHz using a Rogers RT5880 substrate, and its performance was analyzed through simulations in HFSS 15.0 software. Without the DGS, the antenna exhibits a fractional bandwidth (FBW) of only 1.71%, operating from 3.47 GHz to 3.53 GHz. Incorporating the triple dumbbell-shaped DGS in the ground layer increases the FBW significantly to 53.6%, extending the operating frequency range from 2.39 GHz to 4.14 GHz. This improvement was achieved through the careful optimization of DGS parameters. The simulated gain at 3.5 GHz is 5.13 dBi. The proposed design demonstrates superior performance compared to conventional techniques such as split-ring resonators (SRR) and Butler matrix (BM) configurations. Simulation and measurement results show excellent agreement, validating the design. The achieved ultra-wideband performance benefits 5G and next-generation systems, offering greater frequency tolerance, diverse signal support, increased capacity, and reliable operation, making the antenna a promising candidate for future wireless applications. 
Metamaterial Layer Loaded on Log Periodic Antenna for Energy Harvesting Levy Olivia Nur; Quzwain, Kamelia; Wahid Nur Hamid; Aisyah Novfitri; Mudrik Alaydrus
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 20 No. 1 (2026)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v20i1.1840

Abstract

This paper investigates metamaterial layer loaded on a log periodic antenna for Radio Frequency (RF) energy harvesting. The proposed antenna was designed at a frequency of 5.8 GHz using Rogers RT5880 substrate with a thickness of 0.787 mm. The log periodic antenna covered with a metamaterial layer was simulated and analyzed. The computational results show a good agreement in which the proposed antenna is able to produce -13.5 dB return loss and 8.3 dB gain with a compact size of 40 x 50. It implies that the proposed concept in this paper can be implemented to increase the antenna performance.
Increasing Awareness of Renewable Energy for a Better Life for the Indonesian Migrant Worker Community in Penang Malaysia Galang Persada Nurani Hakim; Mudrik Alaydrus; Umaisaroh Umaisaroh
Journal of Innovation and Community Engagement Vol. 5 No. 4 (2024)
Publisher : Faculty of Smart Technology and Engineering, Universitas Kristen Maranatha, Bandung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/ice.v5i4.8503

Abstract

A community service team from Universitas Mercu Buana made a project initiative to increase the awareness of renewable energy for the Indonesian migrant worker community in Penang Malaysia. The goal of this project is to raise community awareness of environmental issues in response to providing a better life for Indonesian migrant workers. The primary goal is to establish sustainable behaviors and to encourage community involvement, especially among Indonesian migrant workers abroad. Through the use of a participatory strategy, the involvement included skill-sharing sessions and awareness campaigns. This needed to be done in order to make the community feel responsible for their action and aim for a better environment, hence a better life. The foundation of the approach was built on cooperative partnerships with each stakeholder that encouraged shared accountability. The results showed that the Indonesian migrant worker community's awareness had significantly increased, which resulted in the adoption of eco-friendly behavior. To validate the renewable energy transfer knowledge, the team then applied a questionnaire, especially question no.8 quoted “The community really feels the benefits of the community service program provided”. Using this method the team accumulated 93.75% satisfaction that renewable energy transfer knowledge has increased the knowledge and awareness of renewable energy among the participants of Indonesian Migrant Workers in Penang, Malaysia.
Degradation of Shielding Performance of Metallic Sheet due to Aperture Configuration and Dimension at 2.4 GHz Adik Susilo Wardoyo; Mudrik Alaydrus
Jurnal Elektronika dan Telekomunikasi Vol. 18 No. 1 (2018)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v18.9-14

Abstract

The increasing demand on wireless connectivity has opened new and modern communication systems. Many wireless systems, for example Wireless Fidelity (Wi-Fi), Bluetooth, ZigBee, share the unlicensed frequency region around 2.4 GHz. Due to intensive application of Wi-Fi systems, there are certain disturbance potentials observed. The Wi-Fi signals cause interference to ZigBee networks which are used for smart grid applications. In this work, the shielding effectiveness of a metallic enclosure with several apertures is studied. Based on analytical expression from the literature, the shielding effectiveness by varying the sheet thickness, number of apertures, and aperture patterns is calculated. Several measurements of Received Signal Strength Indicator (RSSI) are carried out. The measurements are conducted on a shielded room to isolate the measurement from other unknown signal sources. The calculation and measurement of shielding effectiveness confirmed that more apertures on a shielding sheet will reduce the Shielding Effectiveness (SE). SE for one aperture for the case sheet thickness 0.7 mm and diameter of 12 mm reduce from 46.28 dB to 14.24 dB for 6 apertures. Bigger aperture diameters will also degrade the SE from 46.28 dB to 5.27 dB for aperture diameter 24 mm. The same condition can be concluded for the thickness 1.4 mm for aperture diameter of 12 mm. However a slightly different measurement results are obtained for the thickness 1.4 mm and aperture diameter of 24 mm. The thickness plays a significant role to attenuate the wave, so that SE is bigger than the calculated one.
An ultra-broadband microstrip antenna using a triple dumbbell-shaped defected ground structure Puji Haryanto; Dian Widi Astuti; Mudrik Alaydrus; Ahmad Firdausi; Dian Rusdiyanto; Huda A Majid
SINERGI Vol. 30 No. 1 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2026.1.008

Abstract

Microstrip antennas are widely used in modern communication systems due to their compact size and low profile. However, they typically suffer from narrow bandwidth, limiting their performance in advanced wireless applications. This study addresses this limitation by employing a triple dumbbell-shaped defected ground structure (DGS). The antenna is designed to operate at 3.5 GHz using a Rogers RT5880 substrate, and its performance was analyzed through simulations in HFSS 15.0 software. Without the DGS, the antenna exhibits a fractional bandwidth (FBW) of only 1.71%, operating from 3.47 GHz to 3.53 GHz. Incorporating the triple dumbbell-shaped DGS in the ground layer increases the FBW significantly to 53.6%, extending the operating frequency range from 2.39 GHz to 4.14 GHz. This improvement was achieved through the careful optimization of DGS parameters. The simulated gain at 3.5 GHz is 5.13 dBi. The proposed design demonstrates superior performance compared to conventional techniques such as split-ring resonators (SRR) and Butler matrix (BM) configurations. Simulation and measurement results show excellent agreement, validating the design. The achieved ultra-wideband performance benefits 5G and next-generation systems, offering greater frequency tolerance, diverse signal support, increased capacity, and reliable operation, making the antenna a promising candidate for future wireless applications. 
Numerical and Experimental Analysis of Electromagnetic Scattering Characteristics of Wood Beams and Wood Logs Using a UWB Vivaldi Antenna Mudrik Alaydrus; Desi Ekowati
Journal of Telecommunication Electronics and Control Engineering (JTECE) Vol 8 No 2 (2026): Journal of Telecommunication, Electronics, and Control Engineering (JTECE) (In Pr
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/jtece.v8i2.2133

Abstract

This paper presents a numerical and experimental investigation of the electromagnetic scattering characteristics of wood beams and wood logs using a ultra-wideband (UWB) Vivaldi antenna. Understanding the interaction between electromagnetic waves and wooden materials is important for applications involving nondestructive sensing, vegetation-aware propagation modeling, and microwave material characterization. A UWB Vivaldi antenna was designed, fabricated, and experimentally validated through reflection coefficient and radiation pattern measurements. The scattering behavior of wooden objects was subsequently analyzed using full-wave electromagnetic simulations and controlled measurements employing a two-antenna transmission configuration. Wood beams and wood logs with different geometries and orientations were investigated to evaluate the influence of object shape, rotational angle, and operating frequency on transmission characteristics. The results demonstrate good agreement between simulation and measurement, confirming the validity of the proposed approach. For wood beams, the transmission coefficient exhibits limited angular dependence at lower frequencies but stronger attenuation effects at higher frequencies. In the case of wood logs, larger objects introduce significantly greater transmission loss and stronger orientation-dependent variations compared with smaller logs. These findings indicate that electromagnetic scattering in wood is strongly influenced by geometry, size, and frequency. The proposed study contributes to a deeper understanding of electromagnetic wave interaction with wooden structures and supports future developments in microwave sensing, radar systems, forestry diagnostics, and vegetation-related propagation analysis.
Slot-Enabled Mutual Coupling Reduction in Flexible Jeans-Based Textile MIMO Antenna for 2.45 GHz Wearable System Umaisaroh Umaisaroh; Bobi Bobi; Mudrik Alaydrus
Journal of Telecommunication Electronics and Control Engineering (JTECE) Vol 8 No 2 (2026): Journal of Telecommunication, Electronics, and Control Engineering (JTECE) (In Pr
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/jtece.v8i2.2079

Abstract

Mutual coupling is a main challenge in the design of textile-based Multiple-Input Multiple-Output (MIMO) antennas, as it can significantly degrade channel capacity, signal quality, and communication efficiency. This study proposes a jeans-based textile MIMO antenna modified with vertical and horizontal slots at the center of the patch to minimize electromagnetic interaction between elements. The antenna was designed and analyzed using HFSS, and its performance was validated through measurements. The results demonstrate high isolation (S21) values, with –58.32 dB in simulation and –78.19 dB in measurement, at the 2.45 GHz operating frequency. In addition, the antenna exhibits an omnidirectional radiation pattern with uniform energy distribution, ensuring reliable coverage. These findings confirm the effectiveness of the slot technique in enhancing MIMO antenna performance and highlight the potential of flexible jeans-based substrates for wearable system applications in Wireless Body Area Networks (WBAN) and the Internet of Things (IoT).
Co-Authors A Majid, Huda Abdi Wahab Adik Susilo Wardoyo Agus Dendi Rochendi Ahmad Firdausi Ahmad Firdausi Ahmad Syadidu Rosyadi Aisyah Novfitri Andi Adriansyah Andika Muharam Audi Nantan Ayu Mika Sherila Beny Nugraha Bobi Bobi Candra Kurniawan Danang Sunandar Darmanik, Sis Yasin Desi Ekowati Dian Rusdiyanto Dian Widi Astuti Dina Rahmawati Ellisa Agustina Erfan Handoko Fanda Lyta Suzanayanti Fariz Zikrulhaq Yulfinov Fathurahman, Firhan Furqan Furqan Galang P. N. Hakim Galang Persada Nur Hakim Galang Persada Nurani Hakim Ghoshal, Sib Krishna Hamzah Hilal Haryanto, Puji Haziel Latupapua Huda A Majid Indra Dermawan Intan Wahyuni Inu Manggolo Jatmika, Jumaeda Kamelia Quzwain Latupapua, Andrias Izaac Lazuardi Umar Levy Olivia Nur Lukman Medriavin Silalahi Lusi Damayanti Lydia Vintari Majid, Huda A Makarim, Fakhri Zaki Marnel, Sonfia Putra Marza Ihsan Marzuki Meydita Erliana Pardila Mochamad Miftakhul Huda Muhammad Sayidi Muhtar Muhtar Muhtar Muhtar Mukhtar Effendi Muslim Muslim Muzammil Jusoh Oki Teguh Karya Oktariadi, Nanda Oktavia, Maharani Puji Haryanto Purwo Panggalih Gentayu Putri Wulandari RAHAYU, FAJAR Regina Lionnie Reka Pahlevi Retno Supriyanti Reza Farizqi Rio Mubarak Rizal Broer Bahaweres Rizki Ramadhan Putra Rizky Citra Ramadhan Rochendi, Agus Dendi Rusdiyanto, Dian Said Attamimi Setiyo Budiyanto Sianturi Tigor Franky Devano Sirait, Nurafifah Sis Yasin Darmanik Slamet Riyadi Slamet Riyadi Tamtowi, Tomy Taufik Hidayat Thomas Eibert, Thomas Toni Ismanto Trie Maya Kadarina Umaisaroh Umaisaroh Veronica VERONICA VERONICA Wahid Nur Hamid Wahju Sediono Wahyu Tri Cahyanto Wahyu Widanarto, Wahyu Wardoyo, Adik Susilo Widi Prasetyo Yohanes Bayu Kristanto Zuansah Rachmat Munggaran Zulkarnaen Akbar Zulkarnaen Akbar, Zulkarnaen