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Analisis Karakteristik Saluran Komunikasi Satelit Bergerak Berdasarkan Rasio S/N Daerah Makassar Kondisi Clear Sky Hidayat, Muhammad Reza; Arif, Munawwar; Hasanuddin, Zulfajri Basri; Palantei, Elyas
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 17 No 1 (2018): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1347.447 KB) | DOI: 10.26874/jt.vol17no1.60

Abstract

Pada penelitian ini dilakukan pengukuran dan analisis signal strength GPS dengan menguji software berbasis PC dengan sistem operasi Linux. Menggunakan beberapa sofware untuk pengambilan data, pengolahan dan pengujian GPS receiver yang memiliki kemampuan menentukan posisi user pada kondisi mobile (bergerak) dengan tampilan visual pada MAP (peta). Penelitian dilakukan pada beberapa lokasi yang memiliki topografi yang diinginkan. Software-software berbasis PC yang digunakan pada Sitem Operasi Linux (Ubuntu v 10.10) yaitu GPSd (GPS Daemon), GPSpipe, XGPS, dan Tango GPS untuk Map (Peta) sedangkan untuk software berbasis PC pada Windows yaitu Matlab v 7.6. Software-software tersebut sudah mempunyai kemampuan menampilkan posisi satelit dan user beserta informasi yang sangat penting tanpa harus menerima data mentah lagi pada NMEA 0183 dalam kondisi mobile. Pengamatan dilakukan dengan mengumpulkan nilai S/N dari masing-masing satelit yang tertangkap oleh penerima di daerah kota Makassar.Penelitian ini terfokus pada tiga titik 3 (tiga) kondisi yakni LOS (line of sight), NLOS Moderate dan NLOS Heavy. Data yang diinput dari NMEA GPS pipe untuk 12 PRN disortir dan output yang dihasilkan dalam bentuk grafik kualitas signal strength setiap PRN satelit, untuk tampilan visual pada XGPS.
Rancang Bangun Prototype Sistem Pendeteksian Sampah Pada Aliran Air Menggunakan Metode Background Subtraction Hidayat, M. Reza
TEKNO: Jurnal Teknologi Elektro dan Kejuruan Vol 30, No 1 (2020)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um034v30i1p75-88

Abstract

Pemasalahan sampah masih menjadi masalah yang mencolok di Indonesia. Sungai citarum pada tahun 2013 dinyatakan sebagai salah satu tempat tercemar di dunia menurut Green Cross Switzerland dan Blacksmith Institute. Hal ini menjadi permasalahan yang cukup serius mengingat sungai citarum sebagai salah satu sungai terbesar di Jawa Barat memiliki peranan penting sebagai sumber daya air bagi kebutuhan masyarakat dan sebagai sumber pembangkit listrik nasional. Berdasarkan permasalahan tersebut penelitian ini menjelaskan tentang sistem pendeteksian sampah sebagai masukan untuk sistem motor DC sebagai penggerak konveyor dapat mengangkut sampah yang terdapat pada aliran air.  Pada penelitian ini masukan sistem berasal dari akuisisi citra menggunakan web cam Logitech V-UCC22 yang kemudian diolah pada MATLAB R2018a dengan menggunakan metode background subtraction pada personal computer/notebook. Hasil dari pengolahan citra digital ditampilkan pada graphical user interface (GUI) monitoring pendeteksian sampah pada MATLAB R2018a. Arduino Uno R3 di program untuk mengaktifkan motor DC apabila sampah yang terdeteksi lebih dari satu obyek sampah. Sistem yang dibuat dapat mengidentifikasi obyek sampah baik untuk mendeteksi dan juga menghitung jumlah obyek sampah. Kesalahan dalam pengidentifikasian obyek sampah ini disebabkan dari beberapa kondisi yang terjadi pada proses pengujian antara lain karena obyek sampah yang menempel satu sama lain akan dianggap menjadi satu bagian obyek yang sama. Dalam penggunaan metode background subtraction ini bagian obyek sampah yang cenderung memiliki warna yang sama dengan background nya akan tersubtraksi, sedangkan warna yang berbeda dengan background nya tidak tersubtraksi dan akan dianggap obyek sampah
PENGGUNAAN MATEREIAL DIELEKTRIK BUATAN BERBASIS REKTANGULAR PATCH PADA ANTENA HORN UNTUK RADAR X-BAND Chabesno S Panggabean; M. Reza Hidayat
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.v8i1.3695

Abstract

Dielectric materials play an important role in antennas in an effort to support data communication. The material used by the dielectric is usually not even one material, however, it is a combination of several dielectric materials. From the final simulation results, the antenna is obtained at a working frequency of 7.822 GHz with a return loss of -20.336 dB, a bandwidth of 830.6 MHz and a VSWR of 1.21. Whereas in the measurement results of the horn antenna using dielectric material that has been realized, it is found that the antenna is able to work at a frequency of 8.41GHz with a return loss of -13.31 dB, a bandwidth of 110 MHz, and a VSWR of 1.61. The difference in parameter results could be due to dimensional differences between the simulated antenna and the antenna that has been realized. The difference in parameter results could be due to dimensional differences between the simulated antenna and the antenna that has been realized. Measurements are not carried out in a closed room or specifically for measuring the antenna, thus allowing interference to the waves from the antenna being measured because the simulation results are made in ideal conditions.
ANTENA UWB (ULTRA WIDEBAND) MENGGUNAKAN BROADSIDE ARRAY CIRCULAR PATCH 2×2 DENGAN BANDWIDTH 500 MHZ UNTUK RADAR C BAND M. Reza Hidayat; Andre Yanuar
Jurnal Elektro dan Telekomunikasi Terapan (e-Journal) Vol 6 No 2 (2019): JETT Desember 2019
Publisher : Direktorat Penelitian dan Pengabdian Masyarakat, Universitas Telkom

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25124/jett.v6i2.3095

Abstract

large amounts of data at a fairly close distance with the smallest bandwidth of 500 MHz with a frequency range of 3.1-10.6 GHz which is often applied to WIFI, smartphones and radar, so it is necessary to design an antenna that can produce a wide enough bandwidth. This study made a UWB microstrip antenna with circular patches for c-band radar arranged by a 2 × 2 broadside array using a slot with direct feed technique and is expected to work in the c band frequency range which has a return loss value> 20 dB, VSWR <2, gain > 6 dBi, and bandwidth > 500 MHz. The simulation is carried out using the CST Studio Suite 2019 software by entering antenna parameters based on the results of manual calculations, and optimization is carried out to get the expected antenna specifications.From the final simulation results, it is found that the antenna works at a working frequency of 6.204 - 6,760 GHz with a center frequency of 6.5 GHz, a return loss of 41.1407 dB, a wide bandwidth of 556.1 MHz and a VSWR of 1.0176. Whereas in the measurement results of the circular patch microstrip antenna that have been realized, the antenna works at a frequency of 6,150 - 6,720 GHz with a center frequency of 6,390 GHz, a return loss of 30.62 dB, a bandwidth of 570 MHz, and a VSWR of 1.16.
ANALISIS JARINGAN WIRELESS LOCAL AREA NETWORK (WLAN) DI GEDUNG TEKNIK ELEKTRO UNIVERSITAS JENDERAL ACHMAD YANI UNTUK LAYANAN VIDEO LIVE STREAMING YOUTUBE M. Reza Hidayat; Thio Fajar Shantony
Jurnal Elektro dan Telekomunikasi Terapan (e-Journal) Vol 8 No 2 (2021): JETT Desember 2021
Publisher : Direktorat Penelitian dan Pengabdian Masyarakat, Universitas Telkom

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25124/jett.v8i2.4145

Abstract

During this COVID-19 pandemic, internet users are increasing. Most of the activities are done online to avoid the spread of the virus. The YouTube platform is an internet facility that provides various kinds of information through video, both video streaming and live streaming. The rapid development of technology, especially in electronic devices that provide wireless devices, makes it easier for users to access the internet in various places that provide internet access. Youtube live streaming users via wireless networks are different from wired networks because the characteristics of the network are limited and the characteristics of live streaming using wireless require different handling. As a first step to get optimal internet service, it is necessary to measure the average value of internet network service performance using the quality of service parameter when accessing YouTube live streaming video services on a wireless local area network in the Electrical Engineering building of Jenderal Achmad Yani University. This research was conducted using two methods, namely changes in frame rate and resolution as well as changes in the direction and distance of the user from the access point by utilizing the Perpus_FT Unjani hotspot and TPL-TE-Unjani SoB2 hotspot. The analyzed quality of service parameters consist of delay, jitter, packet loss, and throughput. The results of the analysis using the quality of service parameters for YouTube live streaming videos in the research method of changing frame rates and resolutions produce a satisfactory average index value at the Perpus_FT Unjani hotspot of all resolutions used with a frame rate of 30 fps getting an average index value of 3.5 and a frame rate of 60 fps gets an average index value of 3.25. At the TPL-TE-Unjani hotspot, SoB2 produces a satisfactory average index value of all the resolutions used with a frame rate of 30 fps and 60 fps gets an average index value of 3.5. While the results of the analysis using the quality of service parameters for YouTube live streaming videos on the research method of changes in direction and the user's distance from the access point produces a satisfactory average index at a maximum distance of 5 meters in each direction. In the Unjani Library_FT hotspot with north, south, west directions, the average index value is 3.75 and the east is 3.5. Meanwhile, in the TPL-TE-Unjani SoB2 hotspot, the north and east directions produce an average index value of 3.75, while the south and west directions produce an average index value of 3.5 and 4. Both methods are assessed based on the TIPHON standard.
Analisa Elemen Multi Arms Pada Filter Band Pass Mikrostrip Menggunakan Resonator Open Loop Pada Extremely High Frequency M. Reza Hidayat; Difa Dwi Juliantara Sukmawan
Telekontran : Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan Vol 8 No 2 (2020): TELEKONTRAN Vol 8 No 2 Oktober 2020
Publisher : Program Studi Teknik Elektro, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/telekontran.v8i2.3597

Abstract

The use of bandpass filters is commonly used but the use of specifications varies depending on needs, in this case the microstrip bandpass filter is expected to observe the multiarms characteristics of the open loop resonator on the performance of the bandpass filter for EHF frequencies. The design of this microstrip bandpass filter uses a multiarms open loop resonator design where at the beginning of the simulation stage uses only 1 arm with patch width, arm spacing, feeder line width and patch length based on trial and error. The final simulation results are obtained with a connector distance of 2 mm and a distance of 1 mm between arms with a value of S11 = -13.8 dB and S21 = -2.8 dB at a frequency of 30.8 GHz based on the simulation results. The filter has been successfully fabricated but cannot be measured because the frequency is too high and the measuring instrument cannot measure the frequency
Purwarupa Mode Konverter Rectangular Waveguide Menggunakan Double-Trench M. Reza Hidayat; Adhitya Ari Poetra
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 19 No 1 (2020): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol19no01.135

Abstract

Waveguide merupakan suatu alat yang berbentuk menyerupai selongsong persegi ataupun melingkar yang terbuat dari bahan konduktor tunggal. Alat tersebut dapat disisipi dielektrik untuk mengatur frekuensi tertentu atau konverter untuk mengubah mode dari gelombang yang digunakan. Penelitian ini melakukan implementasi konverter mode TE10 ke mode TMmn pada rectangular waveguide dan menggamati karakteristik dari vektor gelombang konverter serta parameter S11 dan S21. Proses pengujian dilakukan dengan mencoba beberapa rancangan dan membandingkan hasilnya, kemudian mengimplementasikannya pada alat. Simulasi dilakukan untuk mendapatkan hasil terbaik. Berdasarkan analisis dari proses simulasi menggunakan software ansoft HFSS, hasil terbaik didapatkan pada konverter mode TMmn parameter dengan rancangan double-trench belah ketupat dan frekuensi cut off 6.4 GHz. Nilai return loss sebesar -14.289 dB dan insertion loss sebesar -0.281 dB. Sedangkan pada rancangan konverter double-trench kembar didapatkan hasil frekuensi cut off sebesar 9.2 GHz dengan nilai return loss -12.878 dB dan nilai insertion loss -0.467 dB. Pada saat pengujian alat yang dilakukan menggunakan Vector Network Analyzer (VNA), frekuensi cut-off yang diperoleh adalah sebesar 7.03 GHz dengan return loss -12.68 dB, dan insertion loss -6.80 dB.
Klasterisasi Sumber Penyebaran Virus Covid-19 dengan Menggunakan Metode K-MEANS Di Daerah Kota Cimahi dan Kab. Bandung Barat M. Reza Hidayat; Arief Rachman
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 19 No 2 (2020): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol19no02.233

Abstract

The Covid-19 virus originated from the city of Wuhan in China. Transmission is very fast and rapid to various parts of the world including Indonesia. This study discusses the clustering of sources of the spread of the covid-19 virus using the k-means method using software for Cimahi City and West Bandung Regency. The purpose of this study is to obtain information about 5 clusters of the source of the Covid-19 virus, namely cluster 0 (offices), cluster 1 (places to eat), cluster 2 (houses), cluster 3 (shopping), and cluster 4 (public transportation). during May to July 2020 for Cimahi City and West Bandung Regency. The results can be concluded that the highest cluster 0 from Kab. West Bandung with an average of 0,05%, for cluster 1 the highest impact of covid-19 was from Kab. West Bandung with an average of 0,55%, for cluster 2 with an average of 0,02%, for cluster 3 the highest impact of covid-19 was from Kab. West Bandung with an average of 0,04%, for cluster 4 the highest impact of covid-19 was from Cimahi City with an average of 0.79%.
Pengiriman gambar melalui komunikasi radio amatir menggunakan pengkodean Base64: Image transmission via amateur radio communications using Base64 encoding Sofyan Basuki; Nur Adny Muhammad; M. Reza Hidayat; Hajiar Yuliana
JITEL (Jurnal Ilmiah Telekomunikasi, Elektronika, dan Listrik Tenaga) Vol. 2 No. 1: March 2022
Publisher : Jurusan Teknik Elektro, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/jitel.v2.i1.2022.35-46

Abstract

  Jika infrastruktur jaringan komunikasi modern tidak bekerja atau mengalami kerusakan, maka diperlukan sistem komunikasi alternatif pengiriman data gambar liputan yang memiliki jangkauan yang luas, mudah diperoleh, bebas lisensi, serta berharga murah.  Salah satunya menggunakan teknologi komunikasi radio amatir pada pita frekuensi ultra high frequency (UHF). Pada penelitian ini akan dibuat skema pengiriman gambar melalui komunikasi radio amatir. Prinsip kerjanya gambar diubah menjadi suara pada pengirim menggunakan algoritma pengkodean Base64 dan pada penerima menggunakan spectrogram untuk mengubah sinyal suara menjadi gambar kembali. Pengujian sistem dilakukan dengan mengukur nilai parameter structural similarity index (SSIM), waktu proses encoding-decoding terhadap variabel frekuensi, serta pengaruh jarak antara pengirim-penerima terhadap nilai parameter SSIM. Hasilnya menunjukkan waktu proses encoding dipengaruhi secara signifikan oleh faktor interval pengambilan titik piksel gambar y dan durasi transmisi gambar d. Kenaikan dimensi gambar tiga kali hanya menaikkan waktu proses encoding 40%. Pada  proses decoding, perbedaan kapasitas gambar dan interval pengambilan piksel gambar tidak mengubah waktu proses secara signifikan. Nilai SSIM terbaik dicapai pada pemilihan faktor y, d = 5, 20 dan frekuensi maksimum 6 KHz. Pada sistem yang telah dibuat, pemilihan frekuensi maksimum terbawah 2 KHz dan tertinggi 10 KHz menghasilkan nilai SSIM buruk terutama pada kapasitas gambar yang besar.
Excitation Analysis of Transverse Electric Mode Rectangular Waveguide M. Reza Hidayat; Mohamad Hamzah Zamzam; Salita Ulitia Prini
Jurnal Elektronika dan Telekomunikasi Vol 20, No 1 (2020)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v20.1-8

Abstract

A waveguide is a transmission medium in the form of a pipe and is made from a single conductor. A waveguide has the function of delivering electromagnetic waves with a frequency of 300 MHz - 300 GHz and is able to direct the waves in a particular direction. In its development, a waveguide can be used as a filter. A filter consists of several circuits designed to pass signals that are generated at a specific frequency and attenuate undesired signals. One type of filter that can pass a signal in a particular frequency range and block signals that are not included in that frequency range is a bandpass filter. In this article, we study a rationing analysis on rectangular waveguide using TEmn mode followed by an implementation of a bandpass filter in the frequency range of 3.3-3.5 GHz for S-Band Wireless Broadband and Fixed Satellite. The observation process is done by shifting the position of the connector (power supply) as much as five times the shift to get the results as desired. Based on the analysis of the simulation process using Ansoft HFSS software, it is observed that the optimized results of the rectangular waveguide mode TE10 were obtained at a distance between connectors of 30 mm with a cut-off frequency of 3.3 GHz, the value of the return loss parameter of -34.442 dB and an insertion loss of -0.039 dB. Whereas, the optimized TE20 mode can be obtained at a distance of 70 mm between connectors, with a cut-off frequency of 3.5 GHz, the value of the return loss parameter of -28.718 dB and an insertion loss of -0.045. The measurement of TE10 mode in our Vector Network Analyzer (VNA) shows a cut-off frequency of 3.2 GHz, with a value of the return loss of -18.73 dB and an insertion loss of -2.70 dB. Meanwhile, a measurement of TE20 mode results in a cut-off frequency of 3.2 GHz, with a value of the return loss of -5.89 dB and an insertion loss of -4.31 dB.