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All Journal Jurnal Teknik Elektro Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Transmisi: Jurnal Ilmiah Teknik Elektro Jurnal Teknik ITS IPTEK The Journal for Technology and Science TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Ilmiah Kursor Journal of ICT Research and Applications Seminar Nasional Informatika (SEMNASIF) ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika EMITTER International Journal of Engineering Technology Journal of Science and Applicative Technology JAVA Journal of Electrical and Electronics Engineering Journal of Strategic and Global Studies JAREE (Journal on Advanced Research in Electrical Engineering) Jurnal Nasional Teknik Elektro dan Teknologi Informasi SinarFe7 Sewagati
Gamantyo Hendrantoro
Departemen Teknik Elektro Institut Teknologi Sepuluh Nopember
Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Dynamic Overlapping Clustering for Wireless Sensor Networks Based-on Particle Swarm Optimization Amin Suharjono; Wirawan Wirawan; Gamantyo Hendrantoro
Journal of ICT Research and Applications Vol. 6 No. 1 (2012)
Publisher : LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.2012.6.1.3

Abstract

In the recent years, Wireless Sensor Network (WSN) has been one of the most interesting research topics because of its flexibility and many potential applications. However, in the applications, there are still resources constraints, including: energy, computation, and bandwidth. It is believed that clustering is the best solution for the need of energy efficiency and scalability. In order to reach the high level of energy efficiencies, mostly, the clustering algorithms avoid the possibility of overlap between clusters. But in fact, there are several applications that need the occurrence of overlaps between clusters. In this paper, we propose a Particle Swarm Optimization (PSO)-based Clustering algorithm that has capability to control the overlap between clusters but still it has an ability to reach energy efficiency. PSO is chosen because it has a light computation and can quickly reach convergence. This proposed algorithm performance is analytically and experimentally compared with clustering on LEACH. The result of the test shows that this proposed algorithm has a capability to control the rate of overlapping degree linearly. The testing on the PSO for clustering also shows the better performance than on LEACH, although there are a few problems related to its complexity.
The Attenuation Characteristics of the Body Tissue on Frequency Function in WBAN Channel Achmad Mauludiyanto; Gamantyo Hendrantoro; Muhammad Fachry Nova
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 5, No 2 (2021): October
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jaree.v5i2.185

Abstract

The Wireless Body Area Network (WBAN) refers to a communication network between sensors placed on the inside, on the surface, or around the body wirelessly. WBAN system cannot be separated from body tissues. Body tissues also have electrical properties depending on frequency. Therefore, body tissue can affect the phenomena occurring in radio wave propagation in the WBAN channel. One of the phenomena is attenuation. This study investigates the impacts of body tissue on the WBAN channel and the effects of frequency on the attenuation of body tissue in the WBAN channel. The measurement of magnitude response was carried out with the human body as the measurement object by utilizing the S21 parameter measurement with a vector network analyzer. In NLOS conditions, a human body was located between two coplanar Vivaldi antenna. Measurements were conducted on the head, chest, and abdomen. The frequency used was in the range of 2 GHz to 6 GHz. The body tissue attenuation was obtained by finding the difference between the magnitude measurement response on the LOS and NLOS conditions. The attenuation data were analyzed using statistical and numerical analysis to determine the effect of frequency on the attenuation of the human body tissues. Based on the analysis results, it was identified that the frequency affected the human body tissue attenuation. The enhancement attenuation of the human body tissues occurred when the frequency was higher. Moreover, there was a significant difference in the body tissue attenuation in different parts of the body.Keywords: attenuation, body tissues, s-parameters, wireless body area network.
Wideband Metamaterial Absorber Based on Combination of Unit Cells Puji Handayani; Eko Setijadi; Muhammad Rendy Anggara; Gamantyo Hendrantoro; Ahmad Maulidiyanto
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 4, No 2 (2020): October
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v4.i2.135

Abstract

Metamaterial absorber is an electromagnetic wave absorber made from metamaterial. It basically works in narrow band frequency as it is designed in a particular shape that related to its resonance frequency. However, some applications, e.g., anechoic chamber, require metamaterial absorber that can work in a wide frequency band. This paper discussed the design of wide band metamaterial absorber using the combination of multiple unit cells. The unit cells type was split ring resonator (SRR). SRR had advantages in terms of its simple shape, it could have more than one resonant frequencies depending on the number of its ring, and its shape could be modified easily to obtain the desired resonant frequencies. We designed metamaterial absorber having good absorbtion rate in 2-10 GHz frequency band. To cover this wide frequency band, we used five unit cells which were arranged on a flat plane. Each unit cell had several resonant frequencies. The design was carried out using simulation software of CST (Computer Simulation System). The fabricated design was measured and the results shown that it had an absorbtion rate of 99% in the measured frequency band.Keywords:  absorption rate, metamaterial absorber, unit cell.
STUDI PERBANDINGAN REDAMAN HUJAN MENGGUNAKAN FREKUENSI 15 GHz DARI HASIL PENGUKURAN SECARA LANGSUNG DAN HASIL SIMULASI METODE SST (SYNTHETIC STORM TECHNIQUE) Riyan Eka Pratama; Achmad Mauludyanto; Gamantyo Hendrantoro
SinarFe7 Vol. 1 No. 1 (2018): Sinarfe7-1A 2018
Publisher : FORTEI Regional VII Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (469.551 KB)

Abstract

Pada sistem komunikasi gelombang mikro line of sight (LOS), pada frekuensi di atas 10 GHz sangat rentan terhadap redaman terutama redaman hujan khususnya di negara-negara tropis seperti indonesia dengan curah hujan yang cukup tinggi, karena bisa menurunkan performansi dari sistem komunikasi ini. Terkait dengan hal di atas, parameter penting di dalam melakukan desain sistem komunikasi point to point ini adalah redaman hujan, yang harus ditentukan besarannya sebagai dasar pertimbangan untuk mendapatkan kestabilan sistem komunikasi pada umumnya. Penelitian ini adalah melakukan pengukuran intensitas curah hujan secara langsung, dan untuk selanjutnya akan ditentukan nilai prediksi redaman hujan dengan metode Synthetic Storm Technique (SST), yang diperoleh melalui penentuan rain rate berdasarkan curah hujan hasil pengukuran raingauge dengan parameter k dan α didasarkan pada rekomendasi ITU-R P.838-3 2005 dengan faktor koreksi A dan juga perhitungan prediksi redaman hujan SST dengan k dan α dari proses regresi line r. Hasil nilai prediksi redaman SST dari kedua metode tersebut di atas dibandingkan dengan hasil pengukuran redaman hujan secara langsung pada link komunikasi 15 GHz. Sebagai langkah terakhir dari pelaksanaan penelitian ini adalah pemilihan metode penentuan redaman SST yang memiliki jumlah kuadrat kesalahan (sum of square error) terkecil.
Linear Array Thinning with Cavity backed U-slot Patch Antenna using Genetic Algorithm Novalia Pertiwi; Fannush Shofi Akbar; Eko Setijadi; Gamantyo Hendrantoro
Journal of Science and Applicative Technology Vol 5 No 1 (2021): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i1.386

Abstract

In this paper, a thinned linear array with Cavity backed U-slot Patch has been investigated using the Genetic Algorithm to minimize peak sidelobe level and the number of antenna elements. One of the essential steps in the Genetic Algorithm method is a crossover, which uses the Paired Top Ten and Combined Top Five rules applied to the Cavity backed U-slot Patch antenna. The peak sidelobe level value is -18.63 dB with a array filling of 63.33% at the broadside angle using Combined Top Five rules. In Paired Top Ten, the peak sidelobe level value is -19.48 dB with a array filling of 70%. The two methods are still better as compared to a dense array. This study is essential in the development of radar technologies since it needs a low sidelobe level.
Subarray 4×4 untuk Antena MIMO 5G dengan Elemen yang Menerapkan Teknik Parasitic Fitri Amillia; Eko Setijadi; Gamantyo Hendrantoro
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 12 No 1: Februari 2023
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jnteti.v12i1.5310

Abstract

Multiple-input multiple-output (MIMO) is a wireless communication system using multiple antennas on the transmitting and receiving sides. This system can improve the quality of wireless communication on 5G technology networks. The advantages of 5G include higher data rates and lower delays. The 5G network in Indonesia uses an intermediate frequency working in the 3.5 GHz frequency band. Antenna is an important device in a wireless network MIMO system. Therefore, this study proposes a single element design using parasitic techniques to widen the bandwidth to meet the needs of MIMO antennas and design a 4×4 subarray antenna for 5G MIMO. The method used began with determining the target antenna specifications, then designing a single element with a parasitic patch. The use of parasitic patches techniques on antenna elements aims to widen the bandwidth to meet target specifications. The resonant frequency of the microstrip antenna was affected by the increase in the number of parasitic patches. The number of resonant frequencies that arise resulted in a broad bandwidth. Then, the single elements with parasitic patches were arranged into a 4x4 subarray. All elements were arranged on the same substrate with a spacing between elements from one feed point to another was 64.28 mm or 0.75λ. The subarray design met the target antenna specifications if the subarray elements have a fractional bandwidth of more than 20% and mutual coupling of less than -20 dB. The material used in antenna design and fabrication was FR-4 (epoxy) substrate with a dielectric constant (ε_r) of 4.3 and a substrate thickness (h) of 1.6 mm. The results showed a bandwidth of 735 MHz or a fractional bandwidth of 20.35%, return loss of -14.65 dB, mutual coupling of -30.05 dB, and gain of 16.86 dB. Thus, the designed 4x4 subarray for MIMO antenna meets the desired specifications.
Implementasi Workshop Penyegaran Bagi Dosen dan Sarjana Bidang Telekomunikasi di Luar Jawa dan Indonesia Timur dengan Kombinasi Metode Daring Sinkron dan Asinkron Gamantyo Hendrantoro; Prasetiyono H Mukti; Devy Kuswidiastuti; Puji Handayani; Achmad Mauludiyanto; Sri Rahayu; Eko Setijadi
Sewagati Vol 4 No 3 (2020)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.864 KB)

Abstract

Keterbatasan prasarana telekomunikasi dan informasi menyulitkan para dosen dan sarjana teknik yang berkarya di wilayah Indonesia timur dalam mengakses buku, jurnal, serta informasi ilmiah untuk menjaga penguasaan keilmuan dan mengikuti perkembangan teknologi di bidangnya, sesuai dengan hasil survey awal kami. Sebagai solusi, kami melaksanakan penyegaran dan peningkatan kapasitas sarjana secara daring dengan berfokus pada sarjana Teknik Elektro bidang Telekomunikasi. Pelaksanaan secara daring memungkinkan untuk menjangkau wilayah geografis yang luas di Indonesia timur. Materi yang disampaikan meliputi materi dasar, perkembangan teknologi terbaru, dan regulasi telekomunikasi, sesuai umpan balik para responden. Setiap minggu selama 13 minggu dilaksanakan workshop daring sinkron menggunakan Zoom dan Live Youtube dengan tes pasca-workshop berbasis Kahoot. Rekaman video workshop di Youtube dapat diputar oleh peserta yang tidak dapat hadir langsung, sedangkan diskusi dilanjutkan secara asinkron melalui grup Whatsapp. Survey akhir menunjukkan besarnya animo peserta, peningkatan pemahaman materi, dan apresiasi peserta terhadap inisiatif ini. Apresiasi khusus diberikan oleh peserta yang memiliki keterbatasan akses internet sehingga sulit mengikuti workshop secara sinkron, tetapi masih dapat mengikuti workshop dan diskusi secara asinkron. Tim pengabdi mengharapkan metode serupa dapat diterapkan dalam kegiatan penyegaran dan pelatihan di bidang yang lain bagi para dosen dan sarjana yang berkarya di luar Jawa dan khususnya Indonesia Timur.
ANALISIS KINERJA RF POWER AMPLIFIER PADA FREKUENSI 3 GHz UNTUK APLIKASI RADAR CC-OFDM-MIMO Mukti, Prasetiyono Hari; Wikantyoso, A Krisna; Wibowo, Reyhan Adinathan; Kuswidiastuti, Devy; Hendrantoro, Gamantyo; Wahyu, Yuyu; Adhi, Purwoko
Transmisi: Jurnal Ilmiah Teknik Elektro Vol 26, No 1 Januari (2024): TRANSMISI: Jurnal Ilmiah Teknik Elektro
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/transmisi.26.1.10-16

Abstract

Indonesia sebagai negara kepulauan yang sangat luas memerlukan sebuah teknologi pengawasan yang dapat memantau pergerakan objek di wilayah kedaulatan Indonesia, baik itu wilayah darat, laut, maupun udara. Salah satu teknologi yang digunakan adalah sistem radar. Berbagai teknologi radar telah dikembangkan, dari mulai radar konvensional hingga modern. Terkini, telah diusulkan sebuah teknologi baru yang dapat menjadi kandidat untuk meningkatkan kinerja radar AESA, yaitu Radar berbasis CC-OFDM-MIMO. Hanya saja, teknologi ini masih dalam tahap pembuktian konsep, sehingga perlu pengujian lebih lanjut dalam bentuk prototipe. Salah satu komponen yang perlu dikembangkan dalam prototipe radar CC-OFDM-MIMO ini adalah modul Power Amplifier. Sehingga, pada makalah ini, kami membahas pengembangan modul Power Amplifier yang dirancang menggunakan komponen komersial. Selain karena biaya produksi yang murah, pengembangan dari komponen komersial ini juga untuk turut meningkatkan kemampuan dalam negeri dalam merancangan komponen/modul gelombang mikro. Modul Power Amplifier ini dilengkapi dengan Automatic Load Switching yang berfungsi untuk mengatur mekanisme switching pada Power Amplifier berdasarkan mode Radar yang digunakan. Karena proses fabrikasi yang masih memerlukan waktu lama, pada makalah ini modul Power Amplifier yang dikembangkan diverifikasi secara numerik terhadap parameter kinerja return loss, gain, titik kompresi P1dB, dan titik perkalian intermodulasi orde 3 (IP3). Dari hasil pengujian tersebut, diperoleh hasil bahwa modul power amplifier yang dikembangkan memiliki gain sebesar 14.5dB, OP1dB sebesar 28.5 dBm, saturasi pada daya output 30.5 dBm, dan bekerja pada frekuensi 3GHz untuk implementasi sistem penguat pada model radar CC-OFDM-MIMO. 
An Autoregressive Model of Electromagnetic Disturbances in An Autonomous Electric Vehicle’s Route Trihatmo, Sardjono; Hendrantoro, Gamantyo; Septiawan, Reza; Setijadi, Eko; Rufiyanto, Arief
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 8, No 1 (2024): January
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jaree.v8i1.387

Abstract

Electromagnetic Interference (EMI) can cause a malfunction of on-board electronic circuits in an autonomous electric vehicle and supporting electronic devices located in the environment of autonomous electric vehicles as well. In order to navigate an autonomous electric vehicle safely, it is important to have electromagnetic field characteristic in the environment. Since the information of electromagnetic field characteristic is hard to find, it needs to be modeled. This paper presents a model of electromagnetic field characteristic that is generated by using autoregression in order to estimate potential EMI. The EMI estimation is based on electromagnetic characteristic in an environment. Unlike other applications that use time history of data to build a model, we present a spatial electromagnetic field strength data in a previous route to estimate the future data in a new route. To obtain historical data for auto-regression process, we measured electric field strengths along a circular route in a campus near Jakarta. This surrounding environment represents a typical area of suburbs. The input variables for auto-regression process are the first 27 correlated data of 155 measured data. The result shows that the use of 13 predictor coefficient produces a variance of prediction error near to zero, with an improvement from maximum prediction error of 15.1257 to prediction error of 0.1862.
Desain Antena Radar Otomotif untuk Deteksi Target Jarak Jauh SAHARANI, AULIA; HENDRANTORO, GAMANTYO; KUSWIDIASTUTI, DEVY
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 4: Published October 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i4.1074

Abstract

ABSTRAKSeiring meningkatnya kebutuhan keselamatan berkendara, teknologi radar otomotif harus terus berkembang untuk memberikan kinerja yang lebih akurat dalam mendeteksi potensi bahaya di jalan. Salah satu aspek penting dalam meningkatkan keakuratan radar adalah resolusi sudut yang lebih tinggi, sehingga memungkinkan radar mendeteksi objek lebih jelas dan presisi. Dalam makalah ini, kami mengusulkan desain antena array linier menggunakan 128 elemen antena Franklin yang dioptimalkan melalui teknik pemangkasan elemen. Teknik ini efektif mengurangi jumlah elemen sebesar 35.7% dari jumlah awal tanpa mengorbankan performa antena. Hasil simulasi menunjukkan desain antena ini menghasilkan lebar beam sempit hingga 1°, tingkat sidelobe di bawah -20 dB, dan direktivitas tinggi di atas 10 dB. Selain itu, desain ini mampu mendeteksi objek dalam jangkauan hingga 300 meter dengan akurasi tinggi, menjadikannya efektif untuk aplikasi radar otomotif. Pendekatan ini efisien dari segi biaya dan material, serta meningkatkan deteksi radar dalam kondisi visibilitas rendah.Kata kunci: antena array, radar kendaraan, antena Franklin, lebar beam sempit, tingkat sidelobe rendah ABSTRACTWith the increasing demand for safety driving, automotive radar technology must continuously evolve to provide more accurate performance in detecting potential road hazards. One crucial aspect of improving radar accuracy is higher angular resolution, enabling the radar to detect objects more clearly and precisely. In this paper, we propose a linear array antenna design using 128 Franklin antenna elements optimized through thinning techniques. This technique effectively reduces the number of elements by 35.7% from the initial number without sacrificing antenna performance. Simulation results demonstrate that this antenna design produces a narrow beamwidth of up to 1°, sidelobe levels below -20 dB, and high directivity above 10 dB. Additionally, this design is capable of detecting objects within a range of up to 300 meters with high accuracy, making it effective for automotive radar applications. This approach is cost-effective and materialefficient, enhancing radar detection in low-visibility conditions.Keywords: array antenna, automotive radar, Franklin antenna, narrow beamwidth, low sidelobe level
Co-Authors Achmad Affandi Achmad Mauludiyanto Achmad Mauludyanto Agriniwaty Paulus Ahmad Maulidiyanto Ahmad Muhiddin Ainun Jariyah Aji Hidayat Muryono Alan Sujadi Amarulla Octavian Amin Suharjono Andi Nurul Utami Husain Arif Fathoni Aris Pradana Aryo Darma Adhitya Boedinoegroho, Hany Bura, Romie O. Destya Arisetyanti Devy Kuswidiastuti Dewa Made Wiharta Dika Oktavian Prasetya Dwicahyono, Taufik Dyah Ayu Kusumaningtyas Harsono Endang Widjiati Endroyono Endroyono Endroyono, E Eni Dwi Wardihani Fadhli, Mohammad Fannush Shofi Akbar Farandi Febrianto Pratama Fathur Zaini Rachman Firmansyah, Mohammad Rifqi Fitri Adi Iskandarianto Fitri Amillia Fredy Indra Oktaviansyah Gatot Kusrahardjo Gatra Erga Yudhanto Gilang Almaghribi Sarkara Putra Harinto Mukti Legowo I Made Oka Widyantara Ikhwanti Indahsari Iwan Hendrianto Kalvein Rantelobo Krisdaniawan, Darien Raditya Krisnatianto Tanjung Mohammad Ariza Fardhiyansyah Muhammad Dwi Rifqi Muhammad Fachry Nova Muhammad Hasan Mahmudy Muhammad Rendy Anggara Muhammad Rizal Habibi Muhammad Yahya Batubara Niko Permana R.W. Ninik D. Yundariani Nisa Rachmadina Novalia Pertiwi Nur Ikhwan Nyoman Putra Sastra Octiana Widyarena Prasetiyono H Mukti Prasetiyono Hari Mukti Prima Kristalina Puji Handayani Pujo Widodo, Pujo Purwoko Adhi Rahayu, Sri Rheyuniarto Sahlendar Asthan Riyan Eka Pratama Rochmawati Ada Wiyah Rufiyanto, Arief Safirina Febryanti Saharani, Aulia Sardjono Trihatmo Septiawan, Reza Setijadi, Eko Siswahyudianto Sri Rahayu SRI RAHAYU Suwadi Suwadi Theresia Dwi Lestari Londong Titiek Suryani Tri Budi Santoso Walid Maulana Hadiansyah Wibowo, Reyhan Adinathan Widyanto Dwiputra Pradipta Wikantyoso, A Krisna Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wismanu Susetyo Wismanu Susetyo Yahya Syukri Amrullah Yuyu Wahyu