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All Journal Jupiter Buletin Pos dan Telekomunikasi JETT (Jurnal Elektro dan Telekomunikasi Terapan) Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) JTERA (Jurnal Teknologi Rekayasa) InComTech: Jurnal Telekomunikasi dan Komputer IJITEE (International Journal of Information Technology and Electrical Engineering) Journal of Telecommunication, Electronics and Control Engineering (JTECE)
Goran, Petrus Kerowe
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Library & Information Science Mechanical Engineering Social Sciences Transportation

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 1 
Comparing Mutual Coupling of Ring Metamaterial on Square and Vivaldi Array Antennas Petrus Kerowe Goran; Eko Setijadi
Buletin Pos dan Telekomunikasi Vol 18, No 2 (2020): December 2020
Publisher : Centre for Research and Development on Resources, Equipment, and Operations of Posts and I

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17933/bpostel.2020.180206

Abstract

The antenna performance is seen from the S-parameter value. The S-parameter graph can be seen as the return loss (S11, S22) and the mutual coupling (S21, S12) value. This research focuses on analyzing mutual coupling on Square and Vivaldi array antennas using the ring metamaterial method. The value of mutual coupling is considered very important to analyze because it affects the performance of the antenna in which is arranged in an array. The simulation results of the mutual coupling value obtained on a square array antenna use a ring metamaterial is -17 dB at a frequency of 2.4 GHz. Meanwhile, the Vivaldi array antenna uses a ring metamaterial that produces a mutual coupling value of -13.840744 dB at a frequency of 3.0162 GHz. The factors that affect the square array antenna so that it becomes the best to suppress the mutual coupling value between antenna elements are a selection of metamaterial shape and proper placement between the antenna array elements is arranged horizontally.
Asymmetric-Slit Method on WiFi Antenna with 2.4 GHz and 5 GHz Frequency Petrus Kerowe Goran; Eka Setia Nugraha
IJITEE (International Journal of Information Technology and Electrical Engineering) Vol 4, No 2 (2020): June 2020
Publisher : Department of Electrical Engineering and Information Technology,Faculty of Engineering UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijitee.55811

Abstract

Wireless Fidelity (WiFi) devices are often used to access the internet network, both for working and in information searching. Accessing the internet can be administered anywhere provided that the area is within the WiFi devices range. A WiFi device uses 2.4 GHz and 5 GHz operating frequencies. There were several methods employed in the previous studies so that an antenna design could work in two different frequencies, i.e., winding bowtie method, Sierpinski method, and double-circular method. This paper employed a simple method, the slit method. The objective of this paper is to discover a simple antenna model that works on 2.4 GHz and 5 GHz frequencies. This paper employed a square patch microstrip antenna with a slit method. The dimensions of the designed square patch microstrip antenna were 42.03 mm × 27.13 mm × 0.035 mm. The antenna worked at 2.4 GHz and 5 GHz frequencies. The obtained simulation results after the optimization showed that the square patch microstrip antenna using the slit method acquired a value of S11 (return loss) of -10.15 dB at a frequency of 2.4 GHz and -37.315 dB at a frequency of 5 GHz.
Klasifikasi Kematangan Tanaman Hidroponik Pakcoy Menggunakan Metode SVM Lukman Priyambodo; Hanin Latif Fuadi; Naura Nazhifah; Ibrohim Huzaimi; Angga Bagus Prawira; Tasya Enjelika Saputri; Mas Aly Afandi; Eka Setia Nugraha; Agung Wicaksono; Petrus Kerowe Goran
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 6 No 1 (2022): Februari 2022
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (430.551 KB) | DOI: 10.29207/resti.v6i1.3828

Abstract

Pakcoy is a type of vegetable plant belonging to the Brassica family. Pakcoy plants can be cultivated using hydroponic techniques, namely plant cultivation techniques without soil media. The advantage of cultivating Pakcoy plants using hydroponic techniques is that it does not require a large area of ​​land, so it is easy to apply in the yard. However, cultivation with hydroponic techniques has drawbacks such as farmers need to make regular observations to determine the harvest readiness of each plant. This causes a lack of effectiveness of farmers in cultivating Pakcoy plants. With the development of Machine Learning technology, a model can classify the maturity of Pakcoy plants based on digital image data. By applying the Support Vector Machine (SVM) Algorithm, the Machine Learning model can learn to classify a digital image of Pakcoy plants with the category "Small" to represent immature Pakcoy plants and "Large" to represent mature Pakcoy plants which results in an accuracy level of above 79%. It can be concluded that Machine Learning can be implemented in Pakcoy cultivation activities to support hydroponic farmers.
Designing of 3-D Animation Videos in Arduino Assembly Learning with The Multimedia Development Life Cycle Method Sarah Astiti; Krishnanda Raditya Mooduto; Petrus Kerowe Goran; Yunita Ardilla
JUPITER (Jurnal Penelitian Ilmu dan Teknologi Komputer) Vol 13 No 2 (2021): JUPITER Edisi Oktober 2021
Publisher : Teknik Komputer Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/3575.jupiter.2021.10

Abstract

Abstract The interest in the Internet of Things (IoT) field is getting more and more popular in the world of technology this recently. This can be seen from the number of researchers, students and students starting to study the Internet of Things (IoT). If viewed globally, then the notion of the Internet of Things (IoT) is that everything in the form of living or inanimate objects in this universe has a code/identity that can be recognized by a system. Many parties have begun to introduce and teach Internet of Things (IoT) technology to Generation Z children. The thought of the importance of Arduino technology learning media is that it can facilitate the learning process for students and students in recognizing and making Arduino devices. Arduino devices consist of CPU, ROM and RAM. Arduino power supply uses a dc voltage between 9-12 volts. In learning Arduino assembly so far, lecturers do not use supporting media other than direct practice and books and power point slide shows. students also have difficulty in absorbing Arduino assembly subject matter because students are faced with new material that has never been obtained before. In the Internet of Things (IoT) course, there is Arduino assembly material. Arduino assembly material cannot be separated from the practicum. Therefore, students need learning media that can package practical activities into a video that can be studied anywhere and anytime. By using learning video media, it is hoped that there will be an increase in student learning outcomes, especially in Arduino assembly materials. Therefore, in this study, a 3-dimensional animation video will be designed in learning Arduino assembly using the Multimedia Development Life Cycle (MDLC) method.
Classification of Rupiah to Help Blind with The Convolutional Neural Network Method Octavian Ery Pamungkas; Puspa Rahmawati; Dhany Maulana Supriadi; Natasya Nur Khalika; Thofan Maliyano; Dicky Revan Pangestu; Eka Setia Nugraha; Mas Aly Afandi; Nurcahyani Wulandari; Petrus Kerowe Goran; Agung Wicaksono1
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 6 No 2 (2022): April 2022
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (528.735 KB) | DOI: 10.29207/resti.v6i2.3852

Abstract

Currency is an item humans require as a medium of exchange in transactions, including those with vision impairments. It can be challenging for certain blind people to identify currencies. This research aimed to help blind people identify nominal currency when in the transaction. Deep Learning with the CNN algorithm and preprocessing with a sequential model were used in this research. This algorithm is modeled as neurons in the human brain that communicate and learn patterns. Data collecting, preprocessing, testing, and evaluation are this research stage. Six hundred eighty-one datasets are used, consisting of IDR 50.000, IDR 75.000, and IDR 100.000. Model testing was carried out with different iterations of 5, 10, 15, and 20 epochs. Different epoch values will affect the time it takes the model to learn, but the length of the learning process will result in more accurate models. The highest result obtained from all epoch tests is 100%. The class prediction results for the 69 test data show that they can be predicted based on the actual class, indicating that the model is adequate. The results of this classification might be used to construct a smartphone app that would assist visually challenged people in recognizing the nominals.
Perancangan Antena Mikrostrip Rectangular Array Untuk Teknologi 5G Pada Frekuensi 28 GHz Nurina Leila Yusup; Eka Setia Nugraha; Petrus Kerowe Goran
InComTech : Jurnal Telekomunikasi dan Komputer Vol 11, No 2 (2021)
Publisher : Department of Electrical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/incomtech.v11i2.10814

Abstract

Teknologi 5G memanfaatkan spektrum millimeter wave untuk menyediakan kapasitas, kecepatan data, dan cakupan yang luas untuk koneksi secara menyeluruh.  3GPP release 15 menyatakan teknologi beamforming dapat memenuhi karakteristik jaringan 5G karena dapat meningkatkan 5G broadcast dan traffic beam coverage. Beamforming merupakan proses penggabungan sinyal pada elemen array untuk membentuk sinar radiasi (beam radiation) dan menyelaraskan fasa sinyal untuk membentuk beam pada arah tertentu. Butler matrix adalah salah satu teknik yang digunakan pada beamforming yang bertujuan untuk mendapatkan beda fasa disetiap elemen dari antena yang dirancang, sehingga arah radiasi yang dihasilkan dapat fokus pada arah yang dibutuhkan. Pada penelitian ini dirancang antena mikrostrip rectangular array dengan pemodelan MIMO 4x4 dan metode butler matrix. Perancangan butler matrix 4x4 menggunakan 2 skenario perancangan, kemudian menentukan skenario terbaik untuk digabungkan dengan antena mikrostrip array MIMO 4x4. Hasil simulasi didapatkan return loss pada pada elemen 1, elemen 2, elemen 3 dan elemen 4 sebesar -14,504 dB, -6,71 dB, -6,79 dB dan -15,129 dB. VSWR sebesar 1,46; 2,716; 2,687 dan 1,424. Gain sebesar11,1 dBi; 10,8 dBi; 10,8 dBi dan 11 dBi. Pola radiasi secara unidirectional dengan arah radiasi antena yang berbeda-beda, dilihat dari sudut pandang elevasi arah pancar utama pada sudut 0,0o; 8,0o; 8,0o; dan 22,0o. Hal ini membuktikan bahwa penggunaan butler matrix 4x4 pada perancangan antena mikrostrip array MIMO 4x4 dapat meningkatkan nilai gain dan mendapatkan pola radiasi antena yang terarah dengan arah radiasi yang berbeda-beda.
Analisa Performansi Jaringan Kabel Fiber Optik Link Backbone Ungaran–Krapyak hanhan subchan sabana; Imam Muhammadi Pradono Budi; Petrus Kerowe Goran
Journal of Telecommunication, Electronics, and Control Engineering (JTECE) Vol 2 No 2 (2020): Journal of Telecommunication, Electronics, and Control Engineering (JTECE)
Publisher : LPPM Institut Teknologi Telkom Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/jtece.v2i2.150

Abstract

Jaringan backbone link Ungaran – Krapayak merupakan jaringan system komunikasi serat optik dengan kecepatan transmisi 2,488 Gbps. Jenis kabel yang digunakan Optical Ground Wire (OPGW) yang terbentang di sepanjang listrik 500 kV milik PT PLN (Perushaan Milik Negara). Faktor yang mempengaruhi parameter optik seperti dispersi, link power budget, Optical Power Meter, avaiblity dan proteksi menjadikan hal tersebut cukup berpengaruh dalam penilaian kinerja. Pada penelitian ini dilihat pengaruh jaringan backbone dan media serat optik yang digunakan dengan rekomendasi G 652 D terhadap kinerja komunikasi serat optik yang diimplementasikan. Teknik yang digunakan adalah dengan menganalisis redaman, dispersi, link power budget , rise time budget, BER ( bit error rate) dan proteksi yang digunakan. Hasil simulasi menunjukan bahwa secara umum performansi jaringan backbone link Ungaran – Krapyak baik kecuali performansi parameter availibility 99,94 % yang tidak sesuai dengan standar PT. ICON PLUS maupun standar ITU-T
RANCANG BANGUN ANTENA MIKROSTRIP RECTANGULAR DENGAN METODE FRACTAL SIERPINSKI UNTUK TEKNOLOGI LONG TERM EVOLUTION 2300 MHz Eka Setia Nugraha; Ilham Januar Ramdhani; Petrus Kerowe Goran
Jurnal Elektro dan Telekomunikasi Terapan (e-Journal) Vol 8 No 1 (2021): JETT Juli 2021
Publisher : Direktorat Penelitian dan Pengabdian Masyarakat, Universitas Telkom

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25124/jett.v8i1.3750

Abstract

The technology currently developing is Long Term Evolution (LTE) which works at the frequencies of 1800 MHz, 2100 MHz, and 2300 MHz. To support LTE technology, an antenna design that conforms to LTE specifications is needed, one of which is a microstrip antenna that supports Multiple Input Multiple Output (MIMO), which in this type allows it to use more than one antenna, both on the transmitter and receiver ( receiver). Because it is possible to use more than one antenna. In this study, using a MIMO microstrip antenna model with the fractal sierpinski method which aims to increase the value of the bandwidth so that it can perform a fast data transmission. In this antenna, the value of the return loss parameter is obtained with a value of -12.05 dB for antenna 1 and -16.75 dB for antenna 2 measurement results, and in the simulation results produce a value of -14.88 dB, for the impedance value the antenna measurement value is obtained. 1, namely 32.33 Ohm and antenna 2 43.4 Ohm, for the simulation it produces a value of 50 Ohm, for the gain during the simulation it produces a value of 5.084 dB and the measurement results in a value of 2.7 dB, for the simulation bandwidth value is 20 MHz, and at When the measurement of antenna 1 yields a value of 18 MHz and antenna 2 is 15 MHz, and the radiation pattern for the simulation and measurement results shows that the radiation pattern is unidirectional.
Analisis Sistem Kendali Daya Terdistribusi pada Jaringan Co-Tier Femtocell Afnan Syam Mediawan; Anggun Fitrian Isnawati; Petrus Kerowe Goran
JTERA (Jurnal Teknologi Rekayasa) Vol 8, No 1: June 2023
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v8.i1.2022.87-96

Abstract

Femtocell merupakan teknologi yang banyak digunakan di bidang jaringan telekomunikasi khususnya untuk jaringan heterogen. Femtocell mempunyai area cakupan yang lebih kecil namun memiliki efisiensi spektrum yang lebih tinggi. Jaringan femtocell biasanya digunakan untuk akses jaringan di dalam ruangan (indoor). Penggunaan jaringan femtocell dengan kondisi user yang terdistribusi mengakibatkan timbulnya permasalahan kendali daya, sehingga sistem kendali dayanya pun juga harus menyesuaikan. Sistem kendali daya yang sesuai untuk user terdistribusi salah satunya adalah Distributed Power Control (DPC) atau sistem kendali daya terdistribusi. Metode ini digunakan untuk menghemat konsumsi daya user yang terdistribusi dengan melakukan update daya secara mandiri. Dalam penelitian ini akan dianalisis mengenai DPC dengan skema 5 user dan 10 user. Analisis dilakukan berdasarkan parameter alokasi daya user saat kondisi fisibel dan saat mencapai konvergensi. Hasil dari penelitian ini menunjukkan bahwa saat menggunakan skema 5 user dan 10 user memiliki dua kondisi yaitu kondisi yang fisibel dan tidak fisibel. Pada saat kondisi sistem fisibel, semua user mampu mencapai SINR target pada saat konvergen. Sedangkan saat kondisi sistem tidak fisibel, user tidak dapat mencapai SINR target dan sistem tidak akan konvergen.
Modifikasi Antena Mikrostrip Berbasis Defected Ground Structure (DGS) Berbentuk Patch Puzzle untuk Aplikasi Sub-6 GHz 5G Yosy Rahmawati; Petrus Kerowe Goran; Vira Ulitama
JTECE (Journal of Telecommunication, Electronics, and Control Engineering) Vol 5 No 2 (2023): Journal of Telecommunication, Electronics, and Control Engineering (JTECE)
Publisher : LPPM Institut Teknologi Telkom Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/jtece.v5i2.1090

Abstract

Perkembangan jaringan seluler 5G digelar secara bertahap hingga tersebar di seluruh wilayah Indonesia dengan menawarkan layanan internet lebih baik dari generasi sebelumnya. Dalam penerapan teknologi seluler dibutuhkan sebuah antena untuk dapat memancarkan dan menerima gelombang elektromagnetik. Oleh karena itu, dalam penelitian ini akan dilakukan modifikasi antena mikrostrip yang diaplikasikan pada Sub–6 GHz 5G dengan frekuensi kerja 3,5 GHz sesuai pita frekuensi n77 menurut 3GPP yaitu pada rentang frekuensi 3,3-4,2 GHz dengan bandwidth yang dihasilkan miminal 100 MHz. Untuk meningkatkan gain dan bandwidth antena mikrostrip, maka diterapkan teknik Defected Ground Structure (DGS) berbentuk pacth puzzle melalui sketsa bentuk sederhana pada bidang ground plane berbentuk U. Berdasarkan simulasi dihasilkan return loss -39,171 dB, VSWR 1,022, gain 2,452 dB, bandwidth 243,8 MHz dengan pola radiasi bidireksional, sedangkan pengukuran dihasilkan return loss -21,931, VSWR 1,187, gain 2,369, bandwidth 132,1755 MHz dan pola radiasi bidireksional dengan substrat FR-4 epoxy. Dapat disimpulkan antena mikrostrip pacth puzzle dapat bekerja baik pada frekuensi 3,5 GHz untuk teknologi Sub-6 GHz 5G karena memenuhi spesifikasi dalam perancangan antena yaitu return loss ≤ -10 dB, VSWR ≤ 1,5, gain ≥ 2 dB dan bandwidth ≥ 100 MHz.
Co-Authors Afandi, Mas Aly Afnan Syam Mediawan Agung Wicaksono Agung Wicaksono1 Angga Bagus Prawira Anggun Fitrian Isnawati Astiti, Sarah Dhany Maulana Supriadi Dicky Revan Pangestu hanhan subchan sabana Hanin Latif Fuadi Ibrohim Huzaimi Ilham Januar Ramdhani Imam Muhammadi Pradono Budi Krishnanda Raditya Mooduto Lukman Priyambodo Natasya Nur Khalika Naura Nazhifah Nurcahyani Wulandari Nurina Leila Yusup Octavian Ery Pamungkas Puspa Rahmawati Setijadi, Eko Tasya Enjelika Saputri Thofan Maliyano Vira Ulitama Yosy Rahmawati Yunita Ardilla