Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

2.296

P-Index

This Author published in this journals

All Journal International Journal of Electrical and Computer Engineering TEKNIK Transmisi: Jurnal Ilmiah Teknik Elektro TRANSIENT: Jurnal Ilmiah Teknik Elektro TELKOMNIKA (Telecommunication Computing Electronics and Control) Proceeding of the Electrical Engineering Computer Science and Informatics Science Information System and Technology

Darjat Darjat

Departemen Teknik Elektro, Fakultas Teknik, Universitas Diponegoro

Author-ID : 249759

Computer Science & IT Education Electrical & Electronics Engineering Engineering

Published : 90 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4 5

Pewujudan Tapis Digital FIR Pemilih Frekuensi Menggunakan DSK TMS320C6713 Erwin, Gidion; Hidayatno, Achmad; Darjat, Darjat
Transmisi Vol 12, No 1 (2010): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Digital frequency selector filter is the simplest application of digital signal processing, in which process only passing signal with specific desired frequency or band frequency. Digital frequency selector filter can be implemented as software or hardware. In this final project, frequency selector filter is implemented as hardware using DSK (Digital Signal Processor Starter Kit)Â TMS320C6713. In this final project, designed three type ofÂ frequency selector filter : Low Pass Filter (LPF), High Pass Filter (HPF), and Band Pass Filter (BPF) with filter length (N) and cut-off frequency (Fc) variation. Filter coefficient is the final product of design stage. FDATool Matlab is used to help filter design and filter coefficient calculation. Then, this filter coefficient is implemented as digital filter in DSK TMS320C6713 using CCS (Code Composer Studio) v.3.1. In CCS, it is also arranged some source code to initialize internal peripheral device on DSK TMS320C6713 (Codec, McBSP, etc), initialize interrupt mode, and initialize memory mapping. Based on experimentâ€™s result, itâ€™s known that the implementedâ€™s magnitude responseÂ approriate with FDAToolâ€™s magnitude response (frequency selector filter algorithm was successfully implemented in DSK TMS320C6713). However, gainâ€™s value at pass band region is not exactly 0 dB because resistance losses from cables and the low precision of measurement device. Based on experimentâ€™s result, itâ€™s also known that filter with higher filter length produces better magnitude response characteristics, especially narrower transition width characteristic.Â Keyword :Â Â digital signal processing, digital filter, frequency selector filter, DSK TMS320C6713.

Perancangan Modulator Elektro-Optik Transversal Pockels S, Rg Setiawan; Darjat, Darjat; Setiyono, Budi
Transmisi Vol 13, No 4 (2011): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Perkembangan teknologi telekomunikasi mengakibatkan kebutuhan akan sistem telekomunikasi yang berkapasitas besar dan berkecepatan tinggi semakin meningkat. Peningkatan permintaan sarana telekomunikasi yang berkapasitas besar dan berkecepatan tinggi ini menempatkan sistem komunikasi serat optik sebagai infrastruktur utama yang mampu meningkatkan sistem konvensional yang selama ini dipakai. Penggunaan sistem komunikasi serat optik telah berkembang ke arah alat yang dapat memodulasi amplitude, fasa, frekuensi atau intensitas cahaya dengan kecepatan tinggi yaitu modulator optik. Pada modulator elektro-optik ini hal utama yang menjadi pertimbangan dalam perancangan adalah kinerja dari sistem. Kinerja modulator elektro-optik dipengaruhi oleh beberapa faktor penting, misalnya bahan media interaksi, dimensi media intaraksi serta faktor-faktor lain di luar itu seperti karakterstik cahaya masukan dan tegangan kerja yang digunakan. Dari hasil perhitungan, dapat ditentukan bahan-bahan yang paling cocok untuk merancangsel modulator yaitu kristal KD*P untuk sumber cahaya laser He-Ne, serta dapat ditentukan dimensi dari modulator yang berbentuk balok dengan panjang 57,043 mm, berpenampang bujur sangkar dengan panjang sisi 0,75 mm Keywords: Modulator, Elektro-Optik, Transversal Pockels

Simulasi Deteksi Posisi dan Lintasan Roket Menggunakan Algoritma TDOA-Trilateration pada Sistem Radar Sekunder Achmad, Shulchul Chabib; Darjat, Darjat; Christyono, Yuli; Ngatelan, Ngatelan
Transmisi Vol 13, No 3 (2011): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Position and trajectory detection of rockets is very nessesary for the lauch of rockets can work as expected. If position and trajectory of rockets arenâ€™t monitored properly, it could be bad. Therefore, we need solutions to monitor the position and trajectory rockets with the technical studies in particular. Rockets moves with initial power and power when rockets fly until its produce acceleration. The rockets movement are arranged by the law of mechanics orbital and its are affected by the law of aerodynamics. The output result from this detection, will be used as comparative data with the expected trajectory. Through this final project, we simulate application of TDOA-Trilateration Algorithm for detect position and trajectory of rocket on secondary radar system. Technique for get distance between transceiver station and transponder is with find time difference of transmit and receive signal between transceiver station and transponder. This technique is called with TDOA (Time Difference Of Arrival). After Distance between transceiver station and transponder is known, three-dimensional position can be searched with Trilateration methode. This prosses will be simulated with software Matlab R2008a. On the simulation testing indicate that rockets position and trajectory which result from simulation of rockets trajectory formation stage with simulation stage to detect position and trajectory of rockets have the same x, y, z values. However, there is one point of positioan which havenâ€™t the same z value while the z value is negatif. Variation values of D0, D1, and D2 (the placement of Ground Station) arenâ€™t influential to the detection values (x, y,z), but influential to values of deltaT1, deltaT2, and deltaT3. Keyword : TDOA (Time Difference Of Arrival), Trilateration, rockets, transceiver, transponder.

Perhitungan Waktu Tunda pada Sistem Radar Sekunder dengan Menggunakan Metode TDOA (Time Different Of Arrival) Nainggolan, Paskah Handikardo Benjamin; Darjat, Darjat; Christoyono, Yuli
Transmisi Vol 13, No 1 (2011): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

The detection of the position and trajectory of the rocket is very necessary in order to launch a rocket capable of running as expected. If the position and trajectory of the rocket is not monitored properly, it could be bad. Therefore, the solution needed to be able to monitor the position and trajectory of the rocket with a specific technical studies. As an initial step in monitoring the position of the rocket is to know the time delay during the process send and receive signals between the sending station with a radio wave receiver. In this thesis, carried out a simulation application of TDOA-trilateration algorithm to compute the time delay on the secondary radar system. Techniques to get a distance that is by finding the difference between the send and receive signals between the transceiver station with a radio wave transponder. After setting on the transceiver and the transponder is set, by setting send data, protocol, and then it will be obtained automatically scanning the time delay is expected. This technique is called TDOA (Time Different Of arrival). This process will be simulated with MatlabaR2008a. Keyword : TDOA, time delay, rockets, radio, transceiver, transponder.

Perancangan dan Analisis Antena Mikrostrip dengan Metode Aperture Coupled Feed pada Frekuensi 800 MHz Pambudhi, Hanief Tegar; Darjat, Darjat; Zahra, Ajub Ajulian
Transmisi Vol 12, No 1 (2010): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Problems antenna of conductor materials is rahter complicated construction and size are ussually quite large, so for purpose such as a cellular system is considered less efficient. For this purpose requires a simple antenna, a thin, easy to manufacture, and can be connected with other circuits. Then came the idea to design a microstrip antenna that antennas.Â Â In this final project, the Aperture Coupled Feed antennas is designed at a frequency of 800 MHz and 900 MHz. The materials used as the antennas is two layers of epoxy PCB (FR4), with 1.5 mm thick material and the dielectric constant of 4.785593. The first layer of substrate is usedÂ as a patch of the antenna, while the second layer is used as a Coupled Aperture, and than the third layer is used as a Feed line, the Coupled Aperture is connected between the patch and Feed line. The process begins with the antennas design based on existing theories. The next step is to design and simulate the performance of the antennas using the software. The software that used for simulation and design is IE3D V12. And the last step is measurement of antennas performance based on the value the working frequency, the ratio of receive power, VSWR, and radiation patterns.Â The form of radiation pattern of microstrip Aperture coupled feed antenna is directional. Result of simulation of microstrip Aperture Coupled Feed at a frequency of 800 MHz: resonant frequency = 0.801 GHz, return loss = -24.92 dB, bandwidth = 0.286 %, VSWR = 1.12, impedance matching = 51.2694 + j 1.02575, total gain = 4.02147, HPBW = 82.5923, microstrip Aperture Coupled Feed at a frequency of 900 MHz: resonant frequency = 0.900 GHz, return loss = -21.0602 dB, bandwidth = 0.344 %, VSWR = 1.192, impedance matching = 53.6359 + j -18.5635, total gain = 4.45903, HPBW = 103.2656. And on the result obtained for Aperture Coupled Feed microstrip antenna at a frequency of 800 MHz: resonant frequency = 840 MHz, VSWR = 1.32, power receieve = 0,109 mW, HPBW = 68áµ’Â and 72áµ’, Aperture Coupled Feed microstrip antenna at a frequency ofÂ 900 MHz: resonant frequency = 920 MHz, VSWR = 1.28, power receieve = 0,042 mW, HPBW = 105áµ’Â and 135áµ’Â Keyword :Â Â substrate material, Aperture Coupled Feed, antenna parameter, the working frequency antenna

Sistem Pengendali Sasaran Tembak DART (Disappear Automatically Retaliatory Target) Menggunakan Gelombang Radio Ajulian Zahra, Ajub; Darjat, Darjat; Darpono, Rony
Transmisi Vol 10, No 3 (2008): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

As a citizen we have duty to keep our country in peace and safe, especially forÂ military forces. Indonesian National Armed Forces keep the country safe an army needed toÂ give a skill and proficiency for shooting. Because of that is necessary to willing a device forÂ shooting practice, that is DART (Disappear Automatically Retaliatory Target). With this deviceÂ hoped that military forces have many skills and proficiency as the way to keep the country inÂ safety and peaceful from threat inside although outside of the country, so we can keep theÂ united of the country. Beside this device can used by athlete as a shoot practice device that isÂ can to increase achievement.In this final project we made control device of Â DART (Disappear Automatically RetaliatoryÂ Target) that more familiar with shoot target, this shoot target can hide and appear as desire byÂ used. This DART can give Retaliatory shoot when shooting on target is miss. The retaliatory isÂ indicator lamp, this indicator lamp can be consider as retaliatory shoot to shooter because thatÂ target of shoot is miss. On the control device of Â DART also completed with Hold using forÂ repeat shoot. Â Keyword : DART, Control system, Hold

Rancang Bangun Perangkat Lunak Komunikasi Radio Adeunis Radio Frequency (ARF)7429B pada Sistem Radar Sekunder Utama, Zaini Agung; Darjat, Darjat; Hidayatno, Achmad
Transmisi Vol 12, No 3 (2010): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Adeunis Radio Frequency (ARF)7429B is a hardware module which will be used for the application of radio communication in secondary radar system. ARF module has AT Command and Register which can be accessed by using a software. This research is a designing andÂ making to integrate between ARF hardware and MATLAB software. The accessing process of ARF itself is in two ways through Universal Serial Bus (USB) computer. ARF module has frequency between 902-928 MHz which is divided into 50 channels. The exchangingÂ process of information between ARFs happens without cable (wireless) using Frequency Shift Keying (FSK) modulation. The AT command can be accessed only by using software in microcontroller orÂ computer. The command given in this communication is appropriated with the character of AT command itself, therefore the accessing process can be happened. The data input and output received in ARF communication is ASCII character. In transmitting process of information. The data is carried in channels randomly by using Frequency Hopping Spread Spectrum (FHSS) method.Â Keyword :Â Â Adeunis Radio frequency (ARF)7429B, MATLAB, Secondary Radar, Receiving and Transmitting Data.

PEMANFAATAN TEKNOLOGI RFID MELALUI KARTU IDENTITAS DOSEN PADA PROTOTIPE SISTEM RUANG KELAS CERDAS Alief, Ridwan; Darjat, Darjat; Sudjadi, Sudjadi
Transmisi Vol 16, No 2 (2014): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Abstrak Â Saat ini terdapat berbagai aplikasi dari kemajuan teknologi yang telah diciptakan dan mulai menggantikan sistem konvensional. Salah satu contohnya adalah sistem RFID (Radio Frequency Identification). Sistem RFID kini telah banyak digunakan baik sebagai perangkat sistem keamanan ruangan, pengecekan barang, maupun sebagai media untuk melakukan presensi harian dalam area perkantoran. Dengan adanya sistem RFID ini diharapkan seseorang dapat melakukan berbagai kegiatan secara lebih cepat, efektif, dan aman. penelitian bertujuan untuk membuat suatu sistem ruang kelas cerdas yang memanfaatkan RFID melalui kartu identitas dosen sebagai media akses penggunaan ruangan kelas. Pada penelitian ini dihasilkan sebuah sistem ruangan cerdas, menggunakan RFID sebagai peralatan utama untuk mengenali pengguna sehingga hanya pengguna yang telah teregistrasi dalam database yang dapat menggunakan ruang kelas. Dari hasil pengujian fungsi sistem RFID sebagai akses masuk ruang kelas secara keseluruhan sudah sesuai dengan algoritma yang diinginkan. Hanya tag yang nomor serinya sudah diregistrasikan ke dalam reader RFID yang dapat melakukan akses untuk masuk kedalam ruang kelas. Pengguna yang melakukan akses masuk kedalam ruang kelas akan disimpan datanya pada reader RFID. Â Kata Kunci: RFID, mikrokontroler ATmega 8535, sensor Pyroelectric Infrared (PIR). Â Â Abstract Â Currently, there are various applications of advances in technology that have been created and replaces the conventional system. One of them is RFID (Radio Frequency Identification) system. The RFID system now has been widely used as a security system, checking the goods, and a media to check daily presence in the office. By using RFID system, someone can accomplish various activities faster, effective, and safe. This research aims to create a system of smart class room based on RFID system and card to facilitated to access the classroom. This research produced an smart class room so only registered user can using the class room. The result of this system is in accordance to the desired algorithm and then produce 100%Â success rate. Â Keywords: RFID, microkontroller ATmega 8535, sensor Pyroelectric Infrared (PIR).

Sistem Pengiriman Informasi Pada Sasaran Tembak Dart (Dissapear Automatically Retaliatory Target) Menggunakan Gelombang Radio Darjat, Darjat; Cristie, Meisach
Transmisi Vol 10, No 3 (2008): TRANSMISI
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Radio waves are natural resources that are limited in their use, therefore, utilizationÂ should be in accordance with the regulations set by government regulations.In the Military inÂ the efforts to maintain the integrity of the state union indonesian republic should be ready inÂ any situation and condition. Because the reason that every soldier must have the ability toÂ battle, one of the firearm. Therefore required that both facilities to support the business.Â Currently DART (dissapear automatticaly reliatory target) or more familiar with the targetÂ shoot, shoot at the target is able to hide this himself and bring himself and the suit can give aÂ reply if shot at the time of the specified target does not shoot..Â At the end of this task will be made Dart that is able to give information to the user with moreÂ efficient with the ability to accommodate Dart still existing. At the end of the task that thisÂ information can only be obtained by viewing the objects directly target shoot is expected to beÂ addressed, so that the user does not see objects directly target shoot, but only see a displayÂ information system only.Keywords: Â Display information, DART

MONITORING DAN KENDALI SUHU PADA OVEN KAYU UNTUK EFISIENSI PROSES PENGERINGAN MENGGUNAKAN RASPBERRY PI Mustikoaji, Yosia Gita; Riyadi, Munawar Agus; Darjat, Darjat
Transient: Jurnal Ilmiah Teknik Elektro TRANSIENT, VOL. 6, NO. 3, SEPTEMBER 2017
Publisher : Universitas Diponegoro

Perkembangan ilmu pengetahuan memacu perkembangan teknologi yang bermanfaat dalam meningkatkan efisiensi dan efektifitas kerja pada segala aktifitas manusia. Pada umumnya manusia akan mencari suatu ide atau gagasan teknologi yang dapat meringankan, mempermudah dan mempercepat suatu pekerjaan. Misalnya alat yang dapat menggantikan atau membantu melakukan pekerjaan manusia yang dapat dikendalikan secara otomatis. Rangkaian peralatan yang dapat dikendalikan untuk menggantikan atau membantu pekerjaan manusia salah satunya adalah pemonitor pengendali jarak jauh suhu oven kayu pada industri-industri kayu yang sekarang sedang berkembang. Pengendalian suhu oven iniÂ menggunakan mini computer ( raspberry pi ) Â sehingga mini computer ( raspberry pi ) tersebut dapat dijadikan sebagai pusat pengendalinya.Dengan menggunakan alat pengendalisuhu oven kayuini akan diperoleh kemudahan-kemudahan seperti menghemat tenaga dan waktu dan hasil yang lebih bagus karena alat pengendali ini dapat bekerja terus menerus tanpa berhenti selama 24 jam.

Co-Authors Abdillah Ridho Achmad Chusnul Khuluqi Achmad Hidayatno Aditya Aditya Adrian Bela Widodo, Adrian Bela Afriandi Ferdinan Afrisal, Hadha Ahmad Siddik Prayogi, Ahmad Siddik Ajub Ajulian Zahra Macrina Akbar Fitra Listyono, Akbar Fitra Alfa Anindita Aminuddin Rizal, Aminuddin andhika gabelly fadila pradana, andhika gabelly fadila Anton Ratrianto Arief Anthadi P Aris Triwiyatno Aulia Rahman Ayu Inka Avinda B Devina Puspasari Bagas Aji Sasongko Bambang Hadiwijaya Benekdiktus Angger Wahyu Widhiawan Budi Setiyono Budi Setiyono Choirul Alfian Putranto Danang Septaditya Hidayat Syah, Danang Septaditya Danniswara, Satya Darmawan Darmawan Defriko Christian Dewandhika Denis Denis Eko Handoyo Eveline Eveline Fabian, Audric Fatkhurrahman, Muhammad Arief Femmy Nur Azizah Firman Eka Saputra, Firman Eka Frans Scifo Gidion Erwin Hafrizal Lazuardi Susiawan Hanief Tegar Pambudhi Hanif Fadhlurrahman Helmi Muhammad Shadiq I Gusti Bagus Wiksuana Ikbal Yuwandra Imam Tri Baskoro Irawan D Sukawati Irawan Dharma S., Irawan Dharma Irawan Dharma Sukawati, Irawan Dharma Irvan Aditya Iskandar, Irvan Aditya Isnan Fauzan Akrom Iwan Setiawan Jaka Windarta Jatmiko E. Suseno Jatmiko E. Suseno Jayaningpang Kinantang, Jayaningpang Jefri Yandika Joanna Francisca Socaningrum Joshua Parulian Siahaan Karnoto . Krismon Budiono Kurniahadi, Andra Listyono, A. F. M. Fuad Hasan M. Pramuaji Tri Saputro, M. Pramuaji Meisach Cristie Mizanul Haq, Mizanul Muhammad Aswan Muhammad Mirza Abdalla, Muhammad Mirza Munawar A Riyadi Munawar Agus Riyadi Mustikoaji, Yosia Gita Nasution, Ali Napiah Ngatelan Ngatelan Nieko Nata Gianza Paskah Handikardo Benjamin Nainggolan Prayogi, A. S. R. Yudha Adi Pratama Ragil Febrio Giant Rano Gusman Namara Rg Setiawan S Riana Safitri Ridwan Alief Riyadi, Munawar A. Rizka Hendrawan, Rizka Robby Afriansyah Rony Darpono Safitri, Riana Saifuddin, Arief Saiful Anwar Sandi, Harum Amalia Santoso, Imam Sari, Dina Meilita Septiaji Tri Wibisono, Septiaji Tri Setyawan, Tristan Rizky Sheila Nauvaliana Shulchul Chabib Achmad Sidiq Hidayatulah, Sidiq Sudjadi Sudjadi Sumardi . Susatyo Handoko Suseno, Jatmiko E. TATI NURHAYATI Tedjo Sukmadi Teguh Aryanto Teguh Prakoso Thalib, Humaid Wahyul Amien S Wahyul Amien Syafei Wardana, Rico Ariesta Wibowo, Tobias Kusuma Wicitra Adam Sanjaya Yohannes, Hot Asi Yuli Christiyono Yuli Christoyono Yuli Christyono Yusuf H. Hendrayana, Yusuf H. Zaini Agung Utama Zeta Hanif Salindri, Zeta Hanif

Title

Found 90 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 90 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 90 Documents
Search