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All Journal International Journal of Electrical and Computer Engineering Jurnal Teknik ITS Jurnal Sains dan Seni ITS IPTEK Journal of Science IPTEK Journal of Proceedings Series Perfecting a Video Game with Game Metrics Matematika dan Sains JFA (Jurnal Fisika dan Aplikasinya) Seminar Nasional Informatika (SEMNASIF) Jurnal Fisika FLUX Jurnal Fisika Indonesia PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Sewagati
Yono Hadi Pramono
Institut Teknologi Sepuluh Nopember
Arts Humanities Astronomy Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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STRUKTUR 4 MICROSTRIP PATCH ANTENA PANEL DENGAN GAP DAN BANDZ PADA FREKUENSI KERJA 2,4 GHz Rohim Aminullah Firdaus, ; Yono Hadi Pramono,
Matematika dan Sains Vol 18, No 1 (2011)
Publisher : Matematika dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The aim of research was to fabricate and characterize the directional microstrip antenna which has structure 4 array with fiber subtrate for communication wi-fi 2.4 GHz. Fabrication was carried out using etching ferroclorit method. Antenna structure consisted of 4 simetry array. Characterization results showed that antenna could be applicated as directional antenna with VSWR value of 1.16. Radiation pattern was radial (vertical and horizontal) with gain of 18-20 dB and HPBW 450. 0.
Pemanfaatan Load Cell CZL601 untuk Pengukuran Derajat Layu Pada Pengolahan Teh Hitam Sugriwan, Iwan; Muntini, Melania Suweni; Pramono, Yono Hadi
Jurnal Fisika FLUX Vol 8, No 1 (2011): Jurnal Fisika Flux Edisi Februari 2011
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v8i1.3105

Abstract

This paper describes result of research about measurement of degree ofwilting in black tea processing. Degree of wilting was observed by measuring of tealeaves mass loss because the loss of water content. Mass sensor used is single pointload cell type CZL 601 that can measure up to 20 kg. Results of calibration of load cellgives the characteristic equation V = 0.0001 m + 0.2014 volts. Output of sensor isconnected with instrumentation amplifier which with applying three IC OP-07 whichsubsequently became data process for mirokontroller ATMega8. Data measurementresult interfaced on the LCD. Instrumentation system was implemented in miniprocess factory at Indonesian Research for Tea and Cinchona Gambung, Bandung.Results of measurement of mass loss in a trough of 48.39%, whereas in the samplebasket was 49.33%. Measuring the degree of wilting during the withering of theproduction process is 37.00%.
Characterization of A Directional Coupler Waveguides Five Layers based on A Variation of The Electric Field in Two Border Area Wati, Farida; Rohedi, Ali Yunus; Pramono, Yono Hadi
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.766

Abstract

Will be Analized the Effective Refractive Indeks with Electric Field Variations In Two Border Areas Layers To Design Vaweguide five layers, where the dispersion relation equation is getting through from the field equations in waveguides five layers. Wave guide five layer nonlinear structure is one of wave guide structure usually used model on design medium laser MQM and system path on device integrated optic. The composition consist of five layer usually used was L-NL-L-NL-L when L and LN as linear and non linear respectively. Will specifically examined the role of the Jacobian elliptic function Cn and Sn in the formulation of the dispersion relation to determine the type of guided modes in a nonlinear waveguide structure of five layers, which are based on the effective refractive index relation to the variation of the electric field at the boundary of two media waveguide region. There are 3 types of guided modes, namely mode symmetry, asymmetry, and antisimentri. The greater the effective refractive index is given, allowing more conditions for the value of the electric field . The dispersion equation shows a very flexible and general expression because it can be applied to the waveguides multilayer having symmetric or asymmetric structures
Fabrication and Characterization of Directional Couplers as Power Dividers Andriawan, Alan; Rahayu, Lucky Putri; Pramono, Yono Hadi
IPTEK Journal of Proceedings Series No 3 (2019): International Conference on Engineering Technology Advance Science and Industrial Appli
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2019i3.5835

Abstract

This paper is about directional coupler fabrication results in a slab structure with a substrate in the form of acrylic glass, a film of nano SnO2, and cladding in the form of methyl methacrylate (MMA). The length of the interaction area (Lc) directional coupler of the fabrication result is 5 mm with a gap width (g) of 0.353 mm. SnO2 film is grown by deposition on an acrylic substrate. To facilitate the characterization process, the directional coupler is given an optical fiber as input. SnO2 film which has been deposited on an acrylic substrate is coated with methyl methacrylate (MMA). Coating of methyl methacrylate (MMA) in SnO2 film is done by the doctor blade method. Directional coupler fabrication results are used as optical power dividers. The fabricated directional coupler is narrated using a He-Ne laser with a wavelength of 632.8 nm. The characterization mechanism is carried out by taking a photo of the cross section of the directional coupler when given a laser beam input. The cross section photos are processed using ImageJ software to determine the directional coupler intensity distribution on each port. Based on the results of the characterization, the directional coupler with the 5 mm Lc output percentage is 26%, 24%, and 49%
Pembuatan dan Karakterisasi Antena Mikrostrip dengan Struktur Satu Feed Line Dipole Co-PlanarWaveguide dan dua patch untuk Repeater WIFI Dua Arah Susiloningsih, Esti; Pramono, Yono Hadi; Rohedi, Ali Yunus
Jurnal Fisika dan Aplikasinya Vol 5, No 2 (2009)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (88.506 KB) | DOI: 10.12962/j24604682.v5i2.952

Abstract

Antena Mikrostrip dengan struktur satu feed line dipole Co-Planar Waveguide dan dua patch untuk repeater wifi dua arah telah difabrikasi dan karakterisasi. Parameter-parameter fisis yang dikarakterisasi meliputi VSWR (Voltage Standing Wave Ratio), Return Loss, dan pola radiasi. Substrat yang digunakan untuk fabrikasi antena adalah FR4 dengan permitivitas relatif 4,47. Ukuran antena yang digunakan adalah 70 mm × 50 mm × 3 mm, dengan lebar feed line 3 mm, CPW 2 mm × 20 mm, dipole 4 mm × 30 mm, patch 20 mm × 70 mm. Hasil karakterisasi Network Analyzer tipe HP 8753ES pada frekuensi kerja 2,460 GHz adalah return loss -23,68 dB,dan VSWR 1,140. Nilai VSWR yang mendekati 1 pada frekuensi kerja tersebut menunjukkan bahwa daya masukan ditransmisikan hampir keseluruhan ke udara dengan porsi kecil yang di refleksikan balik ke dalam osilator/generator pulsa. Sedangkan return loss yang dihasilkan antena < -15 dB berada rentang nilai yang dapat diterima untuk komunikasi dua arah.
Design and fabrication of rotor lateral shifting in the axial-flux permanent-magnet generator Nurma Sari; Gatut Yudoyono; Ali Yunus Rohedi; Yono Hadi Pramono
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 1: February 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i1.pp141-149

Abstract

The development of axial-flux permanent-magnet (AFPM) machines has become a mature technology. The single-stator double-rotor (SSDR) AFPM structure has advantages on the compactness and the low up to medium power applications so the microscale size and low-cost applications are reachable to be designed. The research main objectives are designing and manufacturing the lateral shifting from the north poles of the first rotor face the north poles of the second rotor (NN) to the north poles of the first rotor face the south poles of the second rotor (NS) categories as well as finding the best performance of the proposed method and implementing in a low cost and micro-scale AFPMG. The novel lateral shifting on the one of the rotors shows performance at 19.20 has the highest efficiency at 88.39% during lateral shifting from N–N (00) to N–S (360) on rotor2.
Optically Switched Frequency for Reconfigurable Dipole Antenna Using Photodiode Switches Erna Risfaula Kusumawati; Yono Hadi Pramono; Agus Rubiyanto
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 14, No 4: December 2016
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v14i4.4164

Abstract

The design, fabrication, and measurement of reconfigurable antenna using photodiode switches has been investigated. The antenna had dimension 104 mm x 41 mm x 1.6 mm and FR4 substrate with relative permittivity4.8. It structure was Coplanar Stripline (CPS) dipole. Two photodiodeshad assembled on gap in both dipole arms, which was activated by 600 nm red laser. The unilluminated state, antennahad resonant frequency 800 MHz with RL -32 dB, 2225 MHz with RL -12.5 dB, 3320 with RL -14.1 dB. Meanwhile for the illuminated state, antennahad resonant frequency and return loss shifting to 800 MHz with RL -32 dB, 2225 MHz with RL -12.5 dB, 3320 MHz with RL -14.1 dB.This condition caused low impedance and longer dipole arm. If dimension size increases, resonant frequency will decrease. So, there was shifting frequency and return loss at under illuminated by laser.
Pembuatan Alternator Axial Flux Coreless Dengan Menggunakan Magnet Permanen Clarissa Amelia Sitorus; Yono Hadi Pramono
Jurnal Teknik ITS Vol 6, No 2 (2017)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (672.027 KB) | DOI: 10.12962/j23373539.v6i2.24791

Abstract

Telah dilakukan penelitian pada alternator axial flux coreless dengan menggunakan magnet permanen dimana penelitian ini bertujuan menghitung efisiensi berdasarkan hasil perhitungan secara teoritis maupun secara percobaan. Rotor magnet permanen menggunakan 12 magnet neodymium dengan 6 koil sebagai stator. Generator aksial ini diputar dengan motor pada kecepatan berbeda (360; 482; 482,7; 485,1; 485,3; 485,9). Dari hasil pengukuran didapatkan hasil pada 3 koil maupun 6 koil dapat menghasilkan tegangan yang sebanding dengan kecepatan putarnya. Untuk kecepatan terendah 360 rpm didapatkan 5,8 Volt pada 3 koil sedangkan 13,8 Volt pada 6 koil dengan arus yang sama sebesar 2,5 Ampere. Perhitungan tegangan juga dilakukan secara teoritis berdasarkan parameter fisik dan studi literatur. Perbedaan hasil perhitungan dengan hasil pengukuran rata – rata 22%. Perhitungan effisiensi generator dilakukan dengan membandingkan daya output generator dengan daya output motor penggerak. Hasil pada generator 3 koil memiliki effisiensi tertinggi 28,75 % sedangkan 6 koil sebesar 62,083 %. Dari penelitian ini didapatkan kesimpulan bahwa generator aksial magnet permanen akan memiliki efisiensi yang cukup tinggi dengan semakin banyak koil dan semakin cepat putarannya.
Analisis Pengaruh Antena MIMO 2Tx2Rx Terhadap Kecepatan Akses 4G LTE Yulita Inayatus Shiddiqah; Melania Suweni Muntini; Rino Prasetyanto; Yono Hadi Pramono
Jurnal Sains dan Seni ITS Vol 5, No 2 (2016)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23373520.v5i2.17090

Abstract

Telah dilakukan penelitian mengenai Analisis pengaruh antena MIMO 2Tx2Rx terhadap kecepatan akses 4G LTE yang bertujuan untuk mengetahui perbedaan kecepatan akses atau nilai throughput secara teori dan nilai throughput di lapangan, serta mengetahui pengaruh perbedaan lebar pita frekuensi (Bandwidth) pada antena MIMO 2Tx2Rx terhadap nilai throughput yang dihasilkan. Lokasi penelitian berada di Surabaya di daerah Kertajaya Indah dan Kampus ITS Surabaya. Dalam penelitian ini digunakan 3 data nilai throughput, yaitu nilai throughput berdasarkan perhitungan teori, berdasarkan data Single Site Verification (SSV), dan data Operation Support System (OSS).. Hasil yang didapatkan adalah Perbandingan nilai throughput di lapangan tidak ada yang dapat mencapai target nilai throughput secara teori. Nilai error pada data SSV untuk bandwidth 10 MHz adalah 63% sedangkan pada bandwidth 15 MHz adalah 48%. Untuk data OSS nilai error pada bandwidth 10 MHz adalah 92% dan bandwidth 15 MHz adalah 89%. ini disebabkan banyaknya faktor yang diabaikan ketika menghitung nilai throughput secara teori. Faktor – faktor tersebut diantaranya: interferensi sinyal, noise, ketinggian dan posisi antena, dll. Semakin lebar pita frekuensi yang digunakan oleh suatu jaringan semakin baik pula nilai throughput yang dihasilkan. Dengan kenaikan sebesar 27.9% untuk konfigurasi MIMO 2Tx2Rx. Jumlah jaringan dengan bandwidth 15 MHz lebih sedikit dibandingkan dengan jaringan yang menggunakan bandwidth 10 MHz. sehingga pada saat tertentu nilai throughput bandwidth 10 MHz lebih tinggi dibandingkan nilai throughput pada bandwidth 15 MHz.  
Penentuan Kelayakan Fungsi untuk Pemodelan Pemanasan Minyak Mentah menggunakan Energi Gelombang Mikro Yustiana Yustiana; Melania Suweni Muntini; Yono Hadi Pramono
Jurnal Fisika dan Aplikasinya Vol 10, No 3 (2014)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (466.714 KB) | DOI: 10.12962/j24604682.v10i3.789

Abstract

Tingginya kebutuhan supply energi menuntut terus dikembangkannya teknologi pengolahan minyak bumi. Salah satu proses penting di dalam pengolahan minyak bumi adalah proses pemanasan, yang secara konvensional dapat mereduksi hasil produksi minyak bumi. Penelitian ini bertujuan untuk membuat pemodelan pemanasan minyak mentah menggunakan energi gelombang mikro di dalam suatu pipa sumur minyak. Teknik pemanasan ini selain bertujuan untuk menurunkan viskositas dan mengurangi jumlah partikel residu, juga untuk meminimalkan biaya produksi. Data sekunder yang diperoleh kemudian dimodelkan dan dianalisa menggunakanparameter NSD (Normalisasi Square Deviation) untuk menentukan kelayakan fungsi. Hasil yang diperoleh bahwa leyakan fungsi untuk pemodelan menunjukkan bahwa temperatur minyak dari permukaan pipa sampai dengan kedalaman sumur menurun secara eksponensial. Temperatur minyak dari pusat silinder sampai ke tepi pipa menurun secara sinusoidal. Untuk sumber gelombang mikro dengan daya 500 W dan waktu 10 s dihasilkan temperatur maksimum 385C.
Co-Authors Affandy Subyanto Agus Rubiyanto Ambyah Uboyo Andriawan, Alan Asnawi Asnawi Bachtera Indarto, Bachtera Bahtera Indarto Banatul Muflihati Bintoro Anang Subagyo Clarissa Amelia Sitorus Erna Risfaula Kusumawati Erna Wati Erni Maryati Rahayu Esti Susiloningsih Faridawati Faridawati Fatimah, Iim Fryan Sopacua Gatut Yudoyono Gontjang Prajitno Gontjang Prayitno Ifa Hidayah Iwan Sugriwan Iwan Sugriwan, Iwan Kezia Noviani Anou Ledy Manuhutu Lucky Putri Rahayu M. Arief Bustomi Mefina Yulias Rofianingrum Mohammad Haekal Muhammad Arif Bustomi Muthmainnah, Melania Suweni Muntini Nurma Sari Nurrisma Puspitasari Rino Prasetyanto Rohedi, Ali Yunus Rohim Aminullah Firdaus Samian Samian Samian Sudarsono - Sudarsono Sudarsono Supadi Supadi Susanti H. Hasan Suyatno Wati, Farida Wina Indra Lavina Yanurita Dwi Hapsari Yasin Agung Sahodo Yulita Inayatus Shiddiqah Yuni Nur Hidayati Yustiana Yustiana