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All Journal International Journal of Electrical and Computer Engineering TELKOMNIKA (Telecommunication Computing Electronics and Control) Sinergi JURNAL ELEKTRO Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Jurnal Teknologi Elektro ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Proceeding of the Electrical Engineering Computer Science and Informatics Al-Jabar : Jurnal Pendidikan Matematika JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING InComTech: Jurnal Telekomunikasi dan Komputer Matrix : Jurnal Manajemen Teknologi dan Informatika Techne : Jurnal Ilmiah Elektroteknika TESLA: Jurnal Teknik Elektro Jurnal Abdi Masyarakat (JAM) Jurnal Nasional Teknik Elektro dan Teknologi Informasi Jurnal Rekayasa elektrika Jurnal Teknik Elektro
Dian Widi Astuti, Budi Irawan Prima Putra, Dian Widi Astuti,
Universitas Mercu Buana
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering

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Perancangan Antena Ultra Wideband Dengan Metode Coplanar Waveguide dan Matching Stub Untuk Aplikasi Wireless Body Area Network Rusdiyanto, Dian; Astuti, Dian Widi; Apriono, Catur
InComTech : Jurnal Telekomunikasi dan Komputer Vol 14, No 2 (2024)
Publisher : Department of Electrical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/incomtech.v14i2.21965

Abstract

Penggunaan teknologi pada ranah kesehatan berkembang pesat, salah satunya yang cukup popular adalah Wireless Body Area Network (WBAN). WBAN merupakan teknologi yang menawarkan akses informasi pada tubuh dan perangkat kesehatan secara nirkabel. Sakah satu perangkat untuk mendukung teknologi nirkabel adalah antena. Penelitian ini fokus pada perancangan antena yang digunakan pada aplikasi WBAN. Antena dirancang menggunakan metode coplanar waveguide (CPW) dan matching stub. Metode ini berguna untuk mencapai bandwidth yang sangat lebar (ultra wideband) dan dapat melakukan tuning pada frekuensi kerja yang akan dicapai. Hasil simulasi menunjukan antena mempunyai bandwidth  sebesar 17,8 GHz pada rentang frekuensi 2, 953 GHz – 20,761 GHz dan gain maksimal 6,09 dBi. Simulasi antena juga dilakukan dengan menempatkan antena di atas material tekstil seperti jeans dan katun. Posisi antena di atas jeans mempunyai peningkatan gain simulasi sebesar 9,85% dan lebar bandwidth bertambah 1 GHZ dibanding hasil tanpa material. Sedangkan dengan material katun, nilai bandwidth juga bertambah namun gain simulasi mengalami seidkit penurunan. Walaupun demikian, dengan adanya kedua material tekstil tersebut tidak mempengaruhi performa antena karena masih berada pada frekuensi resonan WBAN yaitu 3,1 GHz – 10.6 GHz. Dengan demikian perancangan antena ini telah sesuai dengan spesifikasi WBAN pada frekuensi ultra wideband dan metode CPW dan stub telah mencapai hasil sesuai dengan tujuan.
Perancangan Antena SIW Horn Untuk Meningkatkan Bandwidth Menggunakan Bentuk Patch Diamond dan Metode Slot Astuti, Dian Widi; Septian, Agung; Muslim, Muslim; Rusdiyanto, Dian
InComTech : Jurnal Telekomunikasi dan Komputer Vol 14, No 2 (2024)
Publisher : Department of Electrical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/incomtech.v14i2.22586

Abstract

Teknologi nirkabel berkembang seiring dengan betumbuhnya kebutuhan manusia yang multifungsi. Teknologi diharapkan mampu menerapkan beberapa aplikasi dalam satu perangkat. Antena merupakan salah satu perangkat penunjang teknologi nirkabel. Penelitian ini mengajukan pengembangan performa antena yang dapat mendukung aktifitas multifungsi, salah satunya dengan meningkatkan performa bandwith antena yang lebar. Antena yang dirancang berupa antena SIW Horn dengan model patch berbentuk diamond dan penggunaan metode slot sebagai metode untuk menghasilkan bandwidth yang lebar. Antena menggunakan susbtrat Rogers 5880 dengan nilai permitivitas 2,2, ketebalan 1,575 mm dan loss tangensial 0.0009. Simulasi antena dilakukan menggunakan Software Ansoft High Frequency Structure Simulator (HFSS) 2015. Hasil simulasi menunjukan bandwidth antena yang lebar sebesar 9 GHz dengan rentang frekuensi 23,2 GHz sampai 32,2 GHz, dimana nilai koefisien refleksi terbaik memiliki nilai -29,3 dB. Sementara itu, hasil pengukuran antena yang telah difabrikasi menunjukan beberapa perbedaan, diantaranya rentang frekuensi kerja, koefisien refleksi dan nilai bandwidth. Bandwidth hasil pengukuran yang diperoleh sebesar 1,9 GHz dengan rentang frekuensi 27,2 GHz sampai 29,2 GHz. Nilai koefisien terbaik bernilai -31 dB. Perbedaan hasil simulasi dan pengukuran disebabkan karena perbedaan dimensi antena simulasi dengan pabrikasi. Jika mengacu pada hasil simulasi, maka antena SIW dengan patch berbentuk diamond dan metode slot telah sesuai dengan tujuan yaitu mempunyai bandwidth yang lebar.
Understanding of Mathematical Concepts in the Linear Equation with Two Variables: Impact of E-Learning and Blended Learning Using Google Classroom Huda, Syamsul; Firmansyah, Mu'min; Rinaldi, Achi; Suherman, Suherman; Sugiharta, Iip; Astuti, Dian Widi; Fatimah, Okis; Prasetiyo, Andika Eko
Al-Jabar: Jurnal Pendidikan Matematika Vol 10 No 2 (2019): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ajpm.v10i2.5303

Abstract

Students need an understanding of mathematical concepts provided by educators who have good skills. Educators must also maximize their teaching time so that it requires learning models such as e-learning and blended learning to meet the loss of teaching time due to other activities that must be done by the teacher besides teaching. This study aims to see the impact of blended learning and e-learning on the ability to understand mathematical concepts of students in the material of two-variable linear equations. The method used in this study is the quasi-experiment with the posttest only control design research. Technical analysis uses one way ANOVA. Based on the results of the study, Blended Learning and E-Learning influence understanding mathematical concepts in the two-variable linear equation material, so that it can be used as a knowledge given to students in understanding mathematical concepts.
Improving the Green Economy Utilizing ReadCharge Solar Literacy Technology at SMP Arrihlah Nusraningrum, Dewi; Hasibuan, Sawarni; Astuti, Dian Widi; Kusuma, Prima Wijaya; Mahendra, Dendi
Jurnal Abdi Masyarakat (JAM) Vol 11, No 1 (2025): JAM (Jurnal Abdi Masyarakat) - September 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jam.v11i1.31098

Abstract

The empowerment of this community partnership implements a program to improve the green economy by increasing reading interest among Arrihlah Islamic Junior High School students by utilizing solar-based ReadCharge technology. The initiative aims to encourage literacy in schools and introduce renewable energy to students as part of sustainable environmental solutions. With the use of environmentally friendly technology, it is hoped that awareness of the importance of green technology in supporting the education and economic development of the community will be created. The program started with designing and building a solar-powered stand-up ReadCharge, then making the design, making the standard operating for its use, providing reading books with a variety of interesting options, and providing training on the use of ReadCharge to students, teachers, parents, and community leaders around Arrihlah Junior High School in several trainings. The training is organized systematically, from the introduction of ReadCharge and its use to its maintenance. The training evaluation provided an overview that ReadCharge delivers an in-depth understanding of the use of solar power to preserve the environment and increase reading interest for students, teachers, and the community. The practical implications of empowering community partnerships funded by grants from the Ministry of Education and Culture are part of the Government's program that encourages people to develop and utilize renewable energy, namely energy sourced from solar heat.
Adaptive multi-radio quality of service model using neural network approach for robust wireless sensor network transmission in multipath fading environment Hakim, Galang Persada Nurani; Astuti, Dian Widi; Firdausi, Ahmad; Majid, Huda A.
International Journal of Electrical and Computer Engineering (IJECE) Vol 15, No 4: August 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v15i4.pp3795-3802

Abstract

Wireless sensor network loss in wireless data transmission is one of the problems that needs attention. Interference, fading, congestion, and delay are some factors that cause loss in wireless data transmission. This paper used an adaptive multi-radio model to enhance the wireless data transmission to be more robust to disturbance in a multipath fading environment. A neural network approach was used to generate the adaptive model. If we use 433 MHz as our carrier frequency with 250 kHz bandwidth and 12 spreading factors, we can get signal noise ratio (SNR) for 20 meters at about -9.8 dB. Thus, we can use the adaptive model to enhance the WSN wireless data transmission's SNR to 9 dB, automatically changing the radio configuration to 797.1 MHz frequency, with 378.1 bandwidth and 7.111 for spreading factor. Based on the result, the wireless data transmission link has been successfully enhanced using the proposed adaptive model for wireless sensor networks (WSN) in a multipath fading environment.
Bandwidth Enhancement on Microstrip Antenna with Dual Feed Line and Truncated for 5G Applications Marnel, Sonfia Putra; Astuti, Dian Widi; Alaydrus, Mudrik; Majid, Huda A
Jurnal Rekayasa Elektrika Vol 21, No 3 (2025)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v21i3.44345

Abstract

The microstrip antenna is low-profile, meaning it has a narrow bandwidth. Additionally, the microstrip antenna is compact, making it highly suitable for implementation in small devices. Its low-profile nature is due to its thin thickness and flexibility, allowing it to be applied on curved surfaces. Technology 5G operating at the 3.5 GHz frequency requires a minimum bandwidth of 100 MHz to support high-speed data transmission and large network capacity, in accordance with the standards set by 3GPP and ITU. This study explores the combination of dual-feed and truncated methods to broaden the antenna's bandwidth. Truncation on the patch helps expand the bandwidth by altering the current distribution on the patch, which can affect the antenna's resonance. The antenna design is carried out using High-Frequency Structure Simulator (HFSS) software. This study shows the optimal bandwidth based on previous references, bandwidth alignment within the frequency range of 3.44 to 3.62 GHz with a simulated bandwidth of 180 MHz, and a measured bandwidth of 210 MHz within the frequency range of 3.42 GHz to 3.62 GHz.
PELATIHAN PENGENALAN SOFTWARE ANSOFT HFSS PADA PERANCANGAN FILTER Astuti, Dian Widi
Jurnal Abdi Masyarakat (JAM) Vol 2, No 2 (2017): JAM (Jurnal Abdi Masyarakat) - Maret
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (438.936 KB) | DOI: 10.22441/jam.2017.v2.i2.002

Abstract

Tema yang diangkat pada program pengabdian kepada masyarakat yang telah dilaksanakan pada hari Jum’at  tanggal 17 Februari 2017 bertempat di Laboratorium Universitas Mercu Buana Jakarta yaitu Pelatihan PengenalanSoftware Ansoft HFSS 2015 Sebagai Perancangan Aplikasi Filter. Program pengabdian kepada masyarakat ini merupakan salah satu dari tri dharma perguruan tinggi, pelaksanaannya merupakan agenda dari Semester ganjil tahunakademik 2016/2017. Adapun perserta pelatihan ini adalah siswa/i dari SMUN 101 Jakarta Barat sebanyak 20 orang. Tujuan yang ingin dicapai pada pelaksanaan pengabdian kepada masyarakat ini yaitu: Setelah melaksanakan pelatihan, di harapkan peserta pelatihan dapat memahami perangkat lunak khususnya software Ansoft HFSS dalam merancang suatu filter guna mendukung penggalian potensi diri siswa-siswi SMU, melakukan identifikasi, analisis,dan evaluasi tentang sejauh mana penerapan penggunaan software sebagai tool untuk menyelesaikan masalah di lingkungan tempat peserta berada. Hasil akhir yang dicapai dalam pengabdian kepada masyarakat ini adalah peserta berharap agar kegiatan ini  sering diadakan baik dengan topik pelatihan yang sama atau topik pelatihan yang lain. Pada kesempatan ini, peserta pelatihan mampu memahami dan mengerti tentang langkah yang dapat dilakukan untuk menyelesaikan masalah dengan memanfaatkan software.
Perancangan Antena Substrate Integrated Waveguide (SIW) Untuk Aplikasi 5G Pada Frekuensi 3,6 GHz Tulha, Luki Lukman; Astuti, Dian Widi
Jurnal Teknologi Elektro Vol 17, No 1 (2026)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jte.2026.v17i1.004

Abstract

Penelitian ini merancang antena Substrate Integrated Waveguide (SIW) dengan modifikasi T-slot untuk meningkatkan bandwidth pada aplikasi jaringan 5G di frekuensi 3,6 GHz. Menggunakan bahan RT Duroid 5880 (εr = 2,2; tebal 1,575 mm), desain dimulai dari perhitungan teoritis, disimulasikan dengan Ansys HFSS 2015, lalu dioptimasi melalui lima tahap percobaan. Desain terbaik (percobaan ke-5) menghasilkan bandwidth 160 MHz (3,51–3,67 GHz) dan return loss −20,34 dB pada simulasi. Namun, hasil pengukuran antena fisik berbeda, yaitu frekuensi kerja 3,62 GHz dengan return loss −3,13 dB, yang kemungkinan disebabkan oleh toleransi fabrikasi, kalibrasi alat, dan kualitas konektor/kabel. Studi ini membuktikan metode T-slot efektif meningkatkan bandwidth, tetapi presisi fabrikasi dan pengukuran perlu ditingkatkan.
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. 
Miniaturized and Bandwidth Improvement of Bandpass Filter using A Quarter Wavelength Resonator Dwi Astuti Cahyasiwi; Amtsaluddin Zanetti; Dian Widi Astuti; Galih Adhi Yoga
Jurnal Teknik Elektro Vol. 17 No. 1 (2025)
Publisher : LPPM Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jte.v17i1.32473

Abstract

The miniaturization of radio frequency (RF) and microwave filters is crucial in modern communication systems, particularly in space-constrained environments such as portable, wearable, or integrated multi-band platforms. In this study, a compact single band-pass filter (BPF) is proposed using an L-shaped resonator loaded with a via-through hole. The incorporation of the via allows the creation of a quarter-wavelength resonator, which significantly reduces the physical size to 44.6% compared to traditional half-wavelength resonators commonly used in band-pass filters. Additionally, the via contributes to an improved impedance bandwidth. Two L-shaped resonators are arranged in a back-to-back configuration to realize a second-order filter response. The structure is excited through a stub-loaded transmission line that couples the signal from port one to port two. To validate the proposed design, the filter was fabricated and measured. Experimental results demonstrate a -3 dB fractional bandwidth (FBW) exceeding 25% at the centre frequency of 3.2 GHz, with a measured insertion loss of -1.662 dB across the passband, indicating good performance for compact filter applications.
Co-Authors A Majid, Huda A.A. Ketut Agung Cahyawan W Achi Rinaldi Adhiyoga , Yohanes Galih Adhiyoga, Yohanes Galih Ahmad Firdausi Ali Djamhuri Alven Delano Alya Patrakomala Amtsaluddin Zanetti Andika Eko Prasetiyo, Andika Eko Ardiansyah Ardiansyah Beny Nugraha Budi Irawan Prima Putra Cahyasiwi, Dwi Astuti Catur Apriono Darmanik, Sis Yasin Dewi Nusraningrum, Dewi Didik Aribowo Dwi Astuti Cahyasiwi Dwi Maya Nursyswanti Fatimah, Okis Firmansyah, Mu'min Galang Persada Nurani Hakim Galih Adhi Yoga Haryanto, Puji Herudin Herudin Iip Sugiharta Iis Andini Iis Andini, Iis Indra Dermawan Indra Surjati Intan Wahyuni Joranto Walesian Kusuma, Prima Wijaya Lydia Sari Mahendra, Dendi Majid, Huda A Majid, Huda A. Marnel, Sonfia Putra Muchamad Yunus Mudrik Alaydrus Muslim , Muslim Muslim Muslim Muslim Muslim Muslim Muslim Muslim Muslim Muslim Muslim Muslim, Muslim Naufal Rizki Rinditayoga Putri, Melinda Megahari R. Deiny Mardian Wijayapraja Rizki Ramadhan Putra Rusdiyanto, Dian Said Attamimi Sawarni Hasibuan Septian, Agung Setiyo Budiyanto Sis Yasin Darmanik Suherman, Suherman Supriyanto Praptodiyono Suryadi Suryadi Syah Alam Syah Alam Syah Alam Syamsul Huda Teguh Firmansyah TOGATOROP, SRI ARTHA Triya Agung Pahlevi Trya Agung Pahlevi Tulha, Luki Lukman Umaisaroh Umaisaroh Yudistiro Yudistiro Yudistiro Yudistiro, Yudistiro Yuli Kurnia Ningsih Yundari, Yundari Yus Natali Zahriladha Zakaria