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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
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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The Design of Microstrip Antenna Using DGS and Series Parasitic Methods for C-Band Applications in Satellite Communications Rusdiyanto, Dian; Muslim , Muslim; Astuti , Dian Widi; Adhiyoga , Yohanes Galih; Apriono , Catur
JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Vol. 8 No. 2 (2025): Issues January 2025
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jite.v8i2.12695

Abstract

This research proposes the design of a microstrip antenna for satellite communication that operates at C-Band frequency. The antenna is made of FR4 material with a thickness of 1.6 mm and has a permittivity of 4.4. The target C-Band frequency that can operate is in the range of 3.7 GHz - 8 GHz. To achieve this wide bandwidth, the defected ground structure (DGS) method is used which cuts the ground area under the substrate. Furthermore, to increase the antenna gain, the method of adding parasitic elements arranged in series (series parasitic) located at the top of the patch. The antenna design begins by designing the antenna in the DGS model and adding three parasitic elements where the basic shape of the parasitic elements has the same dimensions as the antenna patch. Then the development is created using a quarter of the patch dimensions which are added with nine parasitic elements. The simulation results show that the antenna with nine parasitic elements has an antenna bandwidth of 5.292 GHz in the range of 3.214 GHz - 8.506 GHz, where the maximum gain obtained is 8.6 dBi. While the development of an antenna with nine parasitic quarter-size patches has a bandwidth of 6.126 GHz in the frequency range of 3.344 GHz - 9.47 GHz with a maximum gain of 8.04 dBi. Therefore, it can be concluded that this research that designs antennas with the DGS method and series parasitic can operate at C-Band frequencies and can be applied to satellite communications.
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.
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 Andika Eko Prasetiyo, Andika Eko Apriono , Catur Ardiansyah Ardiansyah Beny Nugraha Budi Irawan Prima Putra Cahyasiwi, Dwi Astuti Catur Apriono Darmanik, Sis Yasin Dewi Nusraningrum, Dewi Didik Aribowo Dwi Maya Nursyswanti Fatimah, Okis Firmansyah, Mu'min Galang Persada Nurani Hakim 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 Teguh Firmansyah TOGATOROP, SRI ARTHA Triya Agung Pahlevi Trya Agung Pahlevi Umaisaroh Umaisaroh Yudistiro Yudistiro Yudistiro Yudistiro, Yudistiro Yuli Kurnia Ningsih Yundari, Yundari Yus Natali Zahriladha Zakaria