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Jurnal Elektronika dan Telekomunikasi
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : 14118289     EISSN : 25279955     DOI : -
Core Subject : Engineering,
Electrical & Electronics Engineering Engineering
Jurnal Elektronika dan Telekomunikasi (JET) is an open access, a peer-reviewed journal published by Research Center for Electronics and Telecommunication - Indonesian Institute of Sciences. We publish original research papers, review articles and case studies on the latest research and developments in the field of electronics, telecommunications, and microelectronics engineering. JET is published twice a year and uses double-blind peer review. It was first published in 2001.
Arjuna Subject : -
Articles 470 Documents
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Design and Implementation of Planar Fourtear Microstrip Antenna for WLAN and WiMAX Applications Ken Paramayudha; Yuyu Wahyu; Aprilia Pustpita Sari; Heroe Wijanto
Jurnal Elektronika dan Telekomunikasi Vol 16, No 1 (2016)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v16.20-24

Abstract

In this paper, the microstrip planar fourtear antenna that operate at frequency range 2300 – 2500 MHz was investigated, Some applications suitable to operate in this frequency are WiMAX at 2.3 and 2.5 GHz and WLAN at 2.4 GHz. Simulations performed with the aid of Finite Element Emthod (FEM) based software which can calculte and comply the appropriate design to be able to operate at the desired working frequency. The analyzed parameters include : SWR, impedance, return loss, radiation patterns, gain, and polarization. From the measurement, bandwidth obtained is equal to 7.69% in the frequency range of 2318,250-2500 MHz in VSWR < 2. Radiation pattern measurement was unidirectional and the polarization was elliptical.
Analytical Performance of Low Noise Amplifier Using Single-Stage Configuration for ADS-B Receiver M. Reza Hidayat; Ilham Pazaesa; Salita Ulitia Prini
Jurnal Elektronika dan Telekomunikasi Vol 21, No 2 (2021)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v21.91-97

Abstract

Automatic dependent surveillance-broadcast (ADS-B) is an equipment of a radar system to reach difficult areas. For radar applications, an ADS-B requires a low noise amplifier (LNA) with high gain, stability, and a low noise figure. In this research, to produce an LNA with good performance, an LNA was designed using a BJT transistor 2SC5006 with DC bias, VCE = 3 V, and current Ic = 10 mA, also a DC supply with VCC = 12 V, to achieve a high gain with a low noise figure. The initial LNA impedance circuit was simulated using 2 elements and then converted into 3 elements to obtain parameters according to the target specification through the tuning process, impedance matching circuit was used to reduce return loss and voltage standing wave ratio (VSWR) values. The LNA sequence obtains the working frequency of 1090 MHz, return loss of -52.103 dB, a gain of 10.382, VSWR of 1.005, a noise figure of 0.552, stability factor of 0.997, and bandwidth of 83 MHz. From the simulation results, the LNA has been successfully designed according to the ADS-B receiver specifications.
Preface Vol 14 No 2 Chaeriah Bin Ali Wael
Jurnal Elektronika dan Telekomunikasi Vol 14, No 2 (2014)
Publisher : LIPI Press

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Abstract

Antena Array Mikrostrip Dual Beam Untuk Aplikasi Sensor Radar Doppler Pamungkas Daud; Niluh Sri Andayani
Jurnal Elektronika dan Telekomunikasi Vol 13, No 1 (2013)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v13.6-13

Abstract

Sekarang ini jumlah kendaraan meningkat dengan pesatnya, sementara sarana jalan masih tertinggal baik pertambahannya maupun kualitas jalan serta pemeliharaan, menyebabkan kemacetan lalu lintas sering terjadi dan jumlah kecelakaan kendaraan meningkat pula. Pengontrolan lalu lintas yang baik sangat dibutuhkan untuk efisiensi dan meningkatkan keselamatan pengguna jalan. Sebuah sensor radar doppler dapat digunakan untuk mendeteksi laju kecepatan relatif kendaraan, yakni antara mobil dan obstacle sehingga dapat digunakan untuk menghindari terjadinya kecelakaan dan dapat memantau kepadatan lalu lintas yang terjadi. Radar dirancang untuk kemudahan navigasi dan bisa digunakan untuk mendeteksi kecepatan suatu benda yang bergerak dengan cara mendeteksi energi dari suatu benda yang bergerak tersebut sekaligus menentukan posisinya. Dalam tulisan ini dibahas mengenai desain dan implementasi antena yang mampu mendukung aplikasi sensor radar doppler. Antena ini dirancang menggunakan antena mikrostrip dual beam yang bekerja pada frekuensi 10 GHz. Software yang digunakan untuk perancangan dan simulasi antena ini adalah Ansoft HFSS 10. Penelitian ini dimulai dengan menghitung dimensi antena sesuai rumus yang ada. Dimensi hasil perhitungan akan digunakan pada proses simulasi. Modifikasi dimensi antena digunakan sebagai cara untuk mendapatkan hasil yang optimum dalam simulasi, kemudian dimensi optimum tersebut digunakan dalam proses pabrikasi. Spesifikasi antena yang dibuat memiliki karakteristik bekerja pada frekuensi 10 GHz dengan bandwidth 60 MHz pada VSWR ≤ 1,5, serta memiliki gain sebesar 12,42 dBi.
Performance Evaluation of A2-A4-RSRQ and A3-RSRP Handover Algorithms in LTE Network Hendrawan Hendrawan; Ayu Rosyida Zain; Sri Lestari
Jurnal Elektronika dan Telekomunikasi Vol 19, No 2 (2019)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v19.64-74

Abstract

In LTE Network, users can move freely in the network through fast and seamless handover (HO). This research focuses on intra-LTE handover which occurs using interface X2 to move an EU between two eNBs, i.e. source eNB and target eNB without any changes in MME and SGW at EPC level. Two popular algorithms of intra-LTE handover namely A2-A4-RSRQ and A3-RSRP were evaluated and compared through simulations as well as direct measurements in the field. Simulation is conducted using NS3 simulation tool where performances of various scenarios from both algorithms were evaluated. The performance metrics studied include the average number of HOs that occur, throughput and optimized ratio. Simulations carried out for various scenarios in term of EU numbers, user speeds, and channel conditions. In addition, the results of one-month measurement of three eNBs were also presented. The measurement results are then compared and used to verify the simulation results. Furthermore, by using the optimizing ratio metric, the optimal pair of parameter values of Threshold as well as Offset and Handover Margin (HOM) along with Time-to-Trigger (TTT) are sought for the A2-A4-RSRQ and A3-RSRP respectively.
Preface Vol 15 No 2 Tajul Miftahushudur
Jurnal Elektronika dan Telekomunikasi Vol 15, No 2 (2015)
Publisher : LIPI Press

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Abstract

Front Cover Vol 13 No 2 Chaeriah Bin Ali Wael
Jurnal Elektronika dan Telekomunikasi Vol 13, No 2 (2013)
Publisher : LIPI Press

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Abstract

Vol. 02 No. 1 Jurnal Elektronika dan Telekomunikasi
Jurnal Elektronika dan Telekomunikasi Vol 01-12 (Printed Issues)
Publisher : LIPI Press

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Abstract

Table of Content:Filter Band-Pass Comb-Line ( Bagian I) [1 - 6] ↠ Yuyu WahyuPembuatan Keramik Barium Titanat untuk Peralatan Elektronika [7 - 10] ↠ YunasfiInvestigation of Oxide Quality [11 - 13] ↠ Ika Ismet, Jamal Rahman, Shobih, Amilia Sinta Y, Nurman SetiawanPotentiometric Flow Injection Analysis Measurements of pH and pS [14 - 18] ↠ HiskiaPerancangan Rangkaian Input untu Penguat Daya Besar dengan Bidang Frekuensi Lebar pada Daerah Frekuensi "Very High Frequency (VHF)" [19 - 28] ↠ Rustini S. Kayatmo, Soemaryato KayatmoPembatan Microtip sebagai Elektroda Ionisasi Gas [29 - 33] ↠ Nana Subama, Soegijardjo Soegijoko, Samaun Samadikun, Adang Suwandi, Goib WirantoManajemen Sumber Daya Air Berbasis Scada [34 - 36] ↠ Djohar SyamsiPengaruh Dimensi Komponen dan Komposisi Pasta terhadap Proses Pembuatan Rangkaian Hibrid Film Tebal [37 - 41] ↠ Lilis Retnaningsih, Lia Muliani, Gandi Sugandi, Elli Herlina EfendiSistem Modulator Tipe Lini pada Radar X-Band [42 - 45] ↠ Deni Permana, Syamsu Ismail
Infinite Latent Feature Selection Technique for Hyperspectral Image Classification Tajul Miftahushudur; Chaeriah Bin Ali Wael; Teguh Praludi
Jurnal Elektronika dan Telekomunikasi Vol 19, No 1 (2019)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v19.32-37

Abstract

The classification process is one of the most crucial processes in hyperspectral imaging. One of the limitations in classification process using machine learning technique is its complexities, where hyperspectral image format has a thousand band that can be used as a feature for learning purpose. This paper presents a comparison between two feature selection technique based on probability approach that not only can tackle the problem, but also improve accuracy. Infinite Latent Feature Selection (ILFS) and Relief Techniques are implemented in a hyperspectral image to select the most important feature or band before applied in Support Vector Machine (SVM). The result showed ILFS technique can improve classification accuracy better than Relief (92.21% vs. 88.10%). However, Relief can extract less feature to reach its best accuracy with only 6 features compared with ILFS with 9.
Fabrication of Polyimide Optical Waveguide on Silicon Dioxide Layer Stacked Silicon Substrate Dadin Mahmudin; Shobih -; Pamungkas Daud; Yusuf Nur Wijayanto
Jurnal Elektronika dan Telekomunikasi Vol 17, No 2 (2017)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v17.36-41

Abstract

Optical waveguides are important for guiding lightwave from a place to other places. Propagation and insertion losses of the optical waveguides should be considered to be in low values. Recently, optical waveguides with circular structures, which are optical fibers, are used widely for guiding lightwave in long-distance optical communication with very low propagation and insertion losses. Simultaneously, optical waveguides with planar structure are also developed for short distance communication in optical devices. We have reported design and analysis of the planar optical waveguides. In this paper, fabrication of planar optical waveguides using a polyimide material on thin silicon dioxide combined with the silicon substrate is reported. The polyimide material is used for the core of the optical waveguides. The silicon dioxide located on the silicon substrate and the air is used for cladding of the optical waveguides. Fabrication of the optical waveguides such as oxidation, photoresist coating, masking, ultra-violet exposure, and etching was done. The fabricated optical waveguides were characterized physically using a standard microscope and scanning electron microscope (SEM). The fabrication processes and characterization results are reported and discussed in detail.

Page 31 of 47 | Total Record : 470

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