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All Journal ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Komputasi: Jurnal Ilmiah Ilmu Komputer dan Matematika Jurnal AbdiMas Nusa Mandiri
PARAGYA, DHATU
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Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Mathematics Physics Social Sciences Other

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3.5 GHZ RECTANGULAR PATCH MICROSTRIP ANTENNA WITH DEFECTED GROUND STRUCTURE FOR 5G PARAGYA, DHATU; SISWONO, HARTONO
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 8, No 1 (2020): ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v8i1.31

Abstract

ABSTRAK Pada penelitian ini telah dilakukan perancangan dan implementasi antena mikrostrip untuk aplikasi generasi kelima (5G) pada frekuensi 3.5 GHz. Parameter yang diinginkan berdasarkan pada posisi kebijakan publik Huawei, posisi kebijakan publik Qualcomm, dan artikel 3rd Generation Partnership Project (3GPP) Rel-15. Antena mikrostrip memiliki bandwidth yang sempit, oleh karena itu beberapa modifikasi digunakan, yaitu teknik proximity coupled dan defected ground structure (DGS). Tahap pertama adalah menghitung dimensi awal antena, kemudian disimulasikan menggunakan HFSS Ansoft. Simulasi dimulai dari simulasi dimensi awal, menambahkan teknik proximity coupled, dan penerapan DGS hingga parameter antena yang diinginkan tercapai. Aktivitas pengukuran dilakukan setelah simulasi dan optimasi telah selesai dikerjakan. Hasil dari pengukuran, gain bertambah menjadi 6.6 dB, bandwidth berkurang sebesar 65.2 MHz, Voltage Standing Wave Ratio (VSWR) dan return loss masing-masing 1.31 dan -17.436 dB. Kata kunci: antena mikrostrip, proximity coupled, DGS, 5G, 3.5 GHz ABSTRACT This research has performed the design and implementation of microstrip antenna for fifth generation (5G) application, at frequency 3.5 GHz. The desired parameters are based on Huawei public policy position, Qualcomm public policy position, and Rel-15 3rd Generation Partnership Project (3GPP) article. Since microstrip antenna has narrow bandwidth, some modification are conducted, namely proximity coupled feeding and defected ground structure (DGS). The first stage is calculating the initial dimension of the antenna, finally the antenna is simulated and optimized. The simulation starts from simulating the initial dimension, then applying the proximity coupled feeding, after that employing the DGS until the desired antenna is achieved. The final stage is fabricate the antenna based on simulation then measure it. The measurement results show that the gain is increased to 6.6 dB, the bandwidth is reduced by 65.2 MHz, the Voltage Standing Wave Ratio (VSWR) and return loss are 1.31 and -17.436 dB. Keywords: microstrip antenna, proximity coupled, DGS, 5G, 3.5 GHz
Apriori Algorithm Application for Consumer Purchase Patterns Analysis Situmorang, Boldson Herdianto; Isra, Ali; Paragya, Dhatu; Akbar Adhieputra, David Aulia
Komputasi: Jurnal Ilmiah Ilmu Komputer dan Matematika Vol 21, No 1 (2024): Komputasi: Jurnal Ilmiah Ilmu Komputer dan Matematika
Publisher : Ilmu Komputer, FMIPA, Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/komputasi.v21i1.9260

Abstract

The Apriori algorithm is a data mining association rule algorithm for finding relationship patterns between one or more items in a dataset. Apriori algorithm is often used in transaction data analysis or market basket analysis. Apriori algorithm is used to find out consumer purchase patterns in e-commerce systems and provide product recommendations to consumer by extaracting associations or events from transactional data. This study is purposed for deeply analyze the steps, performance of Apriori algorithm, and give relevant an example of case study to better explain the steps of Apriori algorithm application, as well as the results achieved. 
Living Fountain – Sistem Kendali pada Air Mancur berdasarkan Gerakan Rangka Tubuh PRAYOGO, SANDY SURYO; PARAGYA, DHATU; PERMADI, YOGI; KUSUMA, TUBAGUS MAULANA
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 11, No 3: Published July 2023
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v11i3.594

Abstract

ABSTRAKUG-Technopark merupakan fasilitas pendukung edukasi yang bertujuan memberikan wawasan dan pengetahuan kepada pengunjungnya dengan metode observasi lapangan. Metode tersebut memiliki pengaruh signifikan terhadap pemahaman pengunjung. Sehingga, penelitian ini bertujuan untuk merancang dan mengimplementasikan air mancur di UG-Technopark sebagai daya tarik sekaligus media pembelajaran tentang sistem kendali yang diberi nama “Living Fountain”. Penelitian ini melibatkan perancangan dan implementasi sistem kendali pada sebuah kolam air mancur yang dapat dikendalikan secara otomatis atau berdasarkan gerakan tubuh melalui pemrosesan computer vision. Sistem kendali ini menggunakan mikrokontroler arduino mega yang menerima informasi posisi pergelangan tangan dari kamera melalui permprosesan pada perangkat komputer. Living Fountain bertujuan meningkatkan pengetahuan dan pemahaman sistem kendali bagi pengunjung, mahasiswa, dan dosen dengan memberikan pengalaman belajar yang interaktif dan praktis melalui interaksi langsung dengan air mancur yang bergerak dan mengubah warna sesuai dengan interaksi pengunjung.Kata kunci: deteksi objek, kecerdasan buatan, mikrokontroler, sistem kendali, visi komputer ABSTRACTUG-Technopark is an educational support facility aimed at providing insights and knowledge to its visitors through field observation methods. This method has a significant influence on visitors' understanding. Therefore, this research aims to design and implement a fountain in UG-Technopark as an attraction and a learning medium about control systems, named "Living Fountain". This research involves the design and implementation of a control system for a fountain that can be controlled automatically or based on body movements through computer vision processing. This control system uses an Arduino Mega microcontroller that receives information about wrist position from a camera through processing on a computer device. The Living Fountain aims to enhance the knowledge and understanding of control systems for visitors, students, and professors by providing an interactive and practical learning experience through direct interaction with a moving fountain that changes color based on visitor interactions.Keywords: computer vision, control system, microcontroller, AI, Object Detection
3.5 GHz Rectangular Patch Microstrip Antenna with Defected Ground Structure for 5G PARAGYA, DHATU; SISWONO, HARTONO
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 8, No 1: Published January 2020
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v8i1.31

Abstract

ABSTRAKPada penelitian ini telah dilakukan perancangan dan implementasi antena mikrostrip untuk aplikasi generasi kelima (5G) pada frekuensi 3.5 GHz. Parameter yang diinginkan berdasarkan pada posisi kebijakan publik Huawei, posisi kebijakan publik Qualcomm, dan artikel 3rd Generation Partnership Project (3GPP) Rel-15. Antena mikrostrip memiliki bandwidth yang sempit, oleh karena itu beberapa modifikasi digunakan, yaitu teknik proximity coupled dan defected ground structure (DGS). Tahap pertama adalah menghitung dimensi awal antena, kemudian disimulasikan menggunakan HFSS Ansoft. Simulasi dimulai dari simulasi dimensi awal, menambahkan teknik proximity coupled, dan penerapan DGS hingga parameter antena yang diinginkan tercapai. Aktivitas pengukuran dilakukan setelah simulasi dan optimasi telah selesai dikerjakan. Hasil dari pengukuran, gain bertambah menjadi 6.6 dB, bandwidth berkurang sebesar 65.2 MHz, Voltage Standing Wave Ratio (VSWR) dan return loss masing-masing 1.31 dan -17.436 dB. Kata kunci: antena mikrostrip, proximity coupled, DGS, 5G, 3.5 GHzABSTRACT This research has performed the design and implementation of microstrip antenna for fifth generation (5G) application, at frequency 3.5 GHz. The desired parameters are based on Huawei public policy position, Qualcomm public policy position, and Rel-15 3rd Generation Partnership Project (3GPP) article. Since microstrip antenna has narrow bandwidth, some modification are conducted, namely proximity coupled feeding and defected ground structure (DGS). The first stage is calculating the initial dimension of the antenna, finally the antenna is simulated and optimized. The simulation starts from simulating the initial dimension, then applying the proximity coupled feeding, after that employing the DGS until the desired antenna is achieved. The final stage is fabricate the antenna based on simulation then measure it. The measurement results show that the gain is increased to 6.6 dB, the bandwidth is reduced by 65.2 MHz, the Voltage Standing Wave Ratio (VSWR) and return loss are 1.31 and -17.436 dB. Keywords: microstrip antenna, proximity coupled, DGS, 5G, 3.5 GHz
PEMELIHARAAN DAN PENAMBAHAN DAYA PEMBANGKIT LISTRIK TENAGA SURYA PADA LAHAN PERTANIAN KELOMPOK TANI D’RANGRANG DEPOK Setiyono, Setiyono; Prayogo, Sandy Suryo; Paragya, Dhatu
Jurnal AbdiMas Nusa Mandiri Vol. 7 No. 2 (2025): Periode Oktober 2025
Publisher : LPPM Universitas Nusa Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33480/abdimas.v7i2.6303

Abstract

The Drangrang farmer group’s agricultural garden, located at RT10 RW03, Tirtajaya Village, Sukmajaya District, Depok, covers an area of approximately 1,500 m². The land is used to cultivate vegetables and crops such as corn, peanuts, and cucumbers. Electricity for agricultural operations is supplied by a Solar Power Plant (PLTS) with an initial capacity of 100 Wp. However, along with land expansion and increased load demand, the existing PLTS system could no longer meet energy needs, requiring a capacity upgrade. This community service activity aimed to provide technical assistance for the installation of additional solar panels to increase the PLTS capacity and fulfill electricity requirements for lighting and water pumps. The method included equipment procurement, system assembly in the garden area, and PLTS testing. The activity was carried out by lecturers and students from the Department of Electrical Engineering, Gunadarma University. The stages consisted of design, installation, testing, and measurement. The upgraded PLTS system now provides 200 Wp, capable of supplying four lighting points and one 160 W water pump. The additional capacity ensures a safer and more continuous power supply, supporting improved agricultural productivity and operational efficiency of the farmer group.
Co-Authors Akbar Adhieputra, David Aulia Hartono Siswono Isra, Ali Permadi, Yogi Prayogo, Sandy Suryo Setiyono Situmorang, Boldson Herdianto Tubagus Maulana Kusuma