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All Journal International Journal of Electrical and Computer Engineering Dinamika Hukum Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Bulletin of Electrical Engineering and Informatics Sinergi Journal Industrial Servicess Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Bulletin of Electrical Engineering and Informatics Proceeding of the Electrical Engineering Computer Science and Informatics PROtek : Jurnal Ilmiah Teknik Elektro Elektum : Jurnal Teknik Elektro Educatio IKRA-ITH ABDIMAS Jurnal Kreativitas PKM Indonesian Journal of Education and Mathematical Science Jurnal Listrik, Instrumentasi, dan Elektronika Terapan PAMALI: Pattimura Magister Law Review Indonesian Community Journal Indonesian Journal of Advanced Research (IJAR) Jurnal Rekayasa elektrika Jurnal Pengabdian Dinamika
Teguh Firmansyah
Universitas Sultan Ageng Tirtayasa
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Other

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Desain Power Amplifier Frekuensi 135 Mhz Untuk Transmiter VHF Dittel Portable Firmansyah, Teguh; Kuswara, Gatot; Prasetyo, Windu
Jurnal Ilmiah Setrum (Journal of Electrical Engineering) Vol 5, No 1 (2016)
Publisher : Fakultas Teknik Elektro - Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (21.57 KB)

Abstract

Power amplifier (PA) is the final component in the DITTEL Portable VHF transmitter with fucuntion to amplify the signal that is sent from the source. In this paper, the power amplifier is made to work at a frequency of 135 Mhz. PA proposed using Type Mosfet transistors MRF 136 with power supply V = 30 V, VDD = 28 V and ID = 1.2 A in order to obtain the gain and output power are great. To boost the coverage area of communication at the time of check calibration flight. Design PA using L-Network and phi- Matching is used as an input matching circuit and output matching. Type bias transistor used is a power-divider because it has the sensitivity of the lowest changes to temperature changes. The results of the simulations and calculations have been carried out, the result obtained from the specification of power amplifier : stability values> 1, the gain (S21) = 20 dB, output return loss (S11) = -33.89 dB. With a power output as expected at 10 watts or 40 dBm at frequency 135 MHz.
PERANCANGAN DAN SIMULASI ANTENA HELIX PADA FREKUENSI 2,4 GHZ Muchtar, Husnibes; Firmansyah, Teguh
eLEKTUM Vol 15, No 2 (2018): eLEKTUM
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/elektum.15.2.%p

Abstract

Pada Penelitian ini bertujuan untuk  mengatasi permasalahan tentang ketidakstabilan dan penguatan pada Gain dari antena Helix yang dibantu oleh signal booster dengan jarak 30 m serta pada frekuensi 2,4 GHz untuk jaringan wireless LAN, penulis melakukan penelitian dengan metode yang berbeda dari yang sudah ada. Antena Helix akan bergerak 1800 dan mengukur antara level daya, VSWR, Gain, return loss, bandwidth,dan impedansi input. Hasil pengkuran dari antena helix tersebut pada parameter pola radiasi 1800 pada bidang vertical, Gain = 33,1858168 dBi, sedangkan Gain saat tidak menggunakan signal booster = - 11,70799119 dBi , VSWR = 1,8, return loss = – 10,88 dBi, bandwith = 1,5 GHz, impedansi input = 28,43 +  j13,16 Ω. Hasil pengukuran tersebut mendekati dari hasil pada software MMana-Gal. dan penelitian ini sesaui dengan standar pada wireless LAN dan dapat digunakan pada jaringan tersebut.
Bandwidth enhancement and miniaturization of circular-shaped microstrip antenna based on beleved half-cut structure for MIMO 2x2 application Teguh Firmansyah; Supriyanto Praptodiyono; Herudin Herudin; Didik Aribowo; Syah Alam; Dian Widi Astuti; Muchamad Yunus
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 2: April 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1791.647 KB) | DOI: 10.11591/ijece.v9i2.pp1110-1121

Abstract

In this paper, circular-shaped microstrip antenna was simulated, fabricated, and measured accordingly. As the novelty, to enhance bandwidth and reduce antenna size, beleved half-cut microstrip structure is proposed. Further, this proposed antenna structure will be applied to multiple input multiple output (MIMO) antenna 2´2. Therefore, this research was investigated conventional circular shape antenna (CCSA), circular shaped beleved antenna (CSBA), and MIMO circular shaped beleved antenna (MIMO-CBSA) as Model 1, Model 2, and Model 3, respectively. An FR4 substrate with er= 4.4, thickness h=1.6 mm, and tan d=0.0265 was used. The simulation has been conducted using Advanced Design System (ADS). The antenna CCSA/CSBA/ MIMO-CBSA achieve 1.831GHz/2.265 GHz/2.256 GHz, -15.13dB/-17.37dB/-17.25 dB, 1.42/1.31/1.33, and 1.474/2.332/2.322 for center frequency, reflection coefficient, VSWR, and bandwidth, respectively. This antenna has a size 63x90 mm and 51.5x90 mm for CCSA (Model 1) and CSBA (Model 2), respectively. After the structure of MIMO 2´2 was applied, the size of antenna MIMO-CBSA (Model 3) became 180 mm x 180 mm with a mutual coupling (S21)=-26.18 dB and mutual coupling (S31)=-26.41 dB. The result showed that proposed antenna CSBA (Model 2) has wider-bandwidth of 58,2% and smaller-size of 18.2%. Furthermore, after CSBA (Model 2) structure was applied to MIMO 2´2 (Model 3) and the MIMO antenna obtain good mutual coupling (<-15dB). Moreover, the measured results are good agreement with the simulated results. In conclusion, all of these advantages make it particularly valuable in multistandard antenna applications design such as GSM950, WCDMA1800, LTE2300, and WLAN2400.
Vertebra osteoporosis detection based on bone density using Index-Singh statistical blended method Siswo Wardoyo; Teguh Firmansyah; Noviana Prima; Wiyono Wiyono; Soenarto Soenarto; Djemari Mardapi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 18, No 1: February 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v18i1.14462

Abstract

Osteoporosis is a progressive decrease in bone density so that the bones become brittle and broken. Bones are composed of minerals such as calcium and phosphate, so the bones become hard and solid. Many people do not realize that osteoporosis is a silent disease. Therefore, early detection of osteoporosis is very important. Detection of osteoporosis can be done by utilizing x-ray images of the vertebra. In this research the detection of bone density using blended statistical methods and Index-Singh. The x-ray sample used in this research was 50 images of osteoporosis patients. The result of the area calculation yields the highest white pixel is 7,983 pixels and the lowest white pixel is 5,410 pixels. Based on the results of these calculations, a statistical grouping is conducted into 6 Index-Singh. The range of statistical values is 5,410–6,266 pixels grouped into Index-Singh 1, range of data 6,323–6,512 pixels grouped into Index-Singh 2, the data range 6,520-6,747 pixels grouped into Index-Singh 3, data range 6,778-6,998 pixels grouped into Index-Singh 4, data range 7,001-7,219 pixels grouped into Index-Singh 5, and data range 7,338-7,983 pixels grouped into Index-Singh 6. Overall, the results of testing the osteoporosis detection system have been successful and can be used as an early detection system for osteoporosis. This assistance system has a detection accuracy of 76% compared to doctor's justification.
Performance comparison of transmitting jumbo frame on Windows and Linux System Supriyanto Praptodiyono; Rian Sofhan; Anggoro S. Pramudyo; Teguh Firmansyah; Azlan Osman
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 1: February 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i1.11627

Abstract

IPv6 is the successor of IPv4, the current Internet Protocol that runs out its address. It offers some improvements including simpler header format and extension header resulting in faster transmission of IP packets. However, IPv6 is a network layer protocol that requires lower layer services. IP packets from the network layer pass to data link layer to be encapsulated by layer 2 headers and trailer to become frames. Ethernet is the most widely used data link layer protocol in the current network devices. The technology is always improved to support high speed transmission. However, from standard Ethernet until ten gigabit Ethernet, the size of MTU remains unchanged at 1500 Bytes. This prevents the network from gaining an optimum performance on transmitting IP packets and operating systems cannot take full advantage of the high-speed performance of Gigabit Ethernet. This research aims to implement the transmission of IPv6 packets using jumbo frame on a test-bed environment. The implementation can be used to justify the impact of jumbo frame on the network as well as operating systems performance. The results prove that the OS used on implementation of jumbo frame affects on the network performance. The highest percentage of increasing throughput is 33.6% when both sender and receiver are running Windows. The decreasing delay by 54.36% was happened when using Linux in sender and Windows in receiver.
Design of a Low Cost Remotly Operated Vehicle with 3 Dof Navigation Romi Wiryadinata; Annisa Sucianti Nurliany; Imamul Muttakin; Teguh Firmansyah
Bulletin of Electrical Engineering and Informatics Vol 6, No 1: March 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v6i1.596

Abstract

One type of underwater robot is the ROV (Remotely Operated Vehicle) whose movements are controlled directly by humans from the water surface. In this paper, ROV prototype has been designed and tested with three DoF (Degrees of Freedom) and controlled by a joystick which is connected with UTP (Unshielded Twisted Pair) cables as data transmission between joystick with a microcontroller embedded in the robot. This prototype has 3 thrusters with 3 degrees of freedom, 1 rotational motion (heave) and 2 translational motion (yaw and surge), with direction of movement up, down, forward, backward, turn right, and turn left. Speed mode setting when forward movement on PWM (Pulse Width Modulation) 75% = 0,037 m/s, 90% = 0.053 m/s and 100% = 0,071 m/s, while the reverse speed by 75% = 0,034 m/s, 90% = 0.045 m/s and 100% = 0.059 m/s, when the ROV moves up is 0,042 m/s, down 0.032 m/s, turn right 9 o/s and turn left 15 o/s set with fixed PWM value, is 100%.
Design and Realization of Compact Microstrip Antenna Using Fractal Sierpenski Carpet For Wireless Fidelity Application Syah Alam; Indra Surjati; Awang Ferawan; Teguh Firmansyah
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 6, No 1: March 2018
Publisher : IAES Indonesian Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52549/ijeei.v6i1.390

Abstract

This paper proposed new design of compact microstrip antenna using fractal sierpenski carpet method for Wireless Fidelity application at working frequency of 2400 MHz. The proposed antenna using FR4 Epoxy with (εr) of 4.3, substrate thickness (h) of 1.6 mm and loss tangent (tan δ) of 0.0265. Antenna is designed using AWR Microwave Office software.The sierpenski carpet method is used in order to reduce the dimensions of the microstrip antenna to become more compact. From the measurement results obtained reflection coefficient value -26.077 dB, VSWR 1.104 at working frequency of 2400 MHz frequency with a bandwidth of 127 MHz (2338 MHz – 2465 MHz). Beside that, by using fractal sierepenski carpet method, microstrip antenna dimension was reduced until 47.80% compared to conventional rectangular microstrip antenna.
Design of a Low Cost Remotly Operated Vehicle with 3 Dof Navigation Romi Wiryadinata; Annisa Sucianti Nurliany; Imamul Muttakin; Teguh Firmansyah
Bulletin of Electrical Engineering and Informatics Vol 6, No 1: March 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (825.053 KB) | DOI: 10.11591/eei.v6i1.596

Abstract

One type of underwater robot is the ROV (Remotely Operated Vehicle) whose movements are controlled directly by humans from the water surface. In this paper, ROV prototype has been designed and tested with three DoF (Degrees of Freedom) and controlled by a joystick which is connected with UTP (Unshielded Twisted Pair) cables as data transmission between joystick with a microcontroller embedded in the robot. This prototype has 3 thrusters with 3 degrees of freedom, 1 rotational motion (heave) and 2 translational motion (yaw and surge), with direction of movement up, down, forward, backward, turn right, and turn left. Speed mode setting when forward movement on PWM (Pulse Width Modulation) 75% = 0,037 m/s, 90% = 0.053 m/s and 100% = 0,071 m/s, while the reverse speed by 75% = 0,034 m/s, 90% = 0.045 m/s and 100% = 0.059 m/s, when the ROV moves up is 0,042 m/s, down 0.032 m/s, turn right 9 o/s and turn left 15 o/s set with fixed PWM value, is 100%.
Deteksi Hujan Menggunakan Citra Satelit NOAA Frekuensi 137,9 MHz Menggunakan Morfologi Erison Endi Permata; Ri Munarto; Teguh Firmansyah
Journal Industrial Servicess Vol 3, No 1c (2017): Oktober 2017
Publisher : Fakultas Teknik Jurusan Teknik Industri Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jiss.v3i1c.2112

Abstract

Cuaca merupakan faktor utama keselamatan untuk nelayan dan aktifitas pelayaran. Untuk itu diperlukan suatu sistem teknologi yang dapat mengetahui keadaan cuaca nasional dengan tepat. Teknologi satelit penginderaan jauh atau satelit NOAA merupakan jawaban atas masalah ini. Pada penelitian ini dilakukan perancancangan sistem pengolahan citra satelit NOAA frekuensi 137,9 MHz menggunakan morfologi erison. Penelitian ini memiliki beberapa keunggulan dalam sistem ini antara lain: otomatis memprediksi cuaca, berbasis opencv python (free), memiliki tingkat presisi yang tinggi dalam menggunakan kernel (1x1). Adapun metode yang digunakan adalah metode threshold untuk menentukan kecerahan warna awan. 
Design of a Low Cost Remotly Operated Vehicle with 3 Dof Navigation Romi Wiryadinata; Annisa Sucianti Nurliany; Imamul Muttakin; Teguh Firmansyah
Bulletin of Electrical Engineering and Informatics Vol 6, No 1: March 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (825.053 KB) | DOI: 10.11591/eei.v6i1.596

Abstract

One type of underwater robot is the ROV (Remotely Operated Vehicle) whose movements are controlled directly by humans from the water surface. In this paper, ROV prototype has been designed and tested with three DoF (Degrees of Freedom) and controlled by a joystick which is connected with UTP (Unshielded Twisted Pair) cables as data transmission between joystick with a microcontroller embedded in the robot. This prototype has 3 thrusters with 3 degrees of freedom, 1 rotational motion (heave) and 2 translational motion (yaw and surge), with direction of movement up, down, forward, backward, turn right, and turn left. Speed mode setting when forward movement on PWM (Pulse Width Modulation) 75% = 0,037 m/s, 90% = 0.053 m/s and 100% = 0,071 m/s, while the reverse speed by 75% = 0,034 m/s, 90% = 0.045 m/s and 100% = 0.059 m/s, when the ROV moves up is 0,042 m/s, down 0.032 m/s, turn right 9 o/s and turn left 15 o/s set with fixed PWM value, is 100%.
Co-Authors Achmad B. Fathoni Agus S. Tamsir Ahendyarti, Ceri Ali Abdurrazaq Andriono, Eko Anggoro S. Pramudyo Annisa Sucianti Nurliany Apriliani, Izza M Aunurrahman Aunurrahman Awang Ferawan Azlan Osman Bonieta Dwi Lestari Bonieta Dwi Lestati Dhevyanto, Benny Dian Widi Astuti, Budi Irawan Prima Putra, Dian Widi Astuti, Didik Aribowo Djemari Mardapi Eddy Afrianto Effendy, Suapri Endi Permata Fajar Nugroho, Tri Hendarto Fauzan, Fikran Fakhry Feti Fatonah fitri pratiwi, fitri Gatot Kuswara, Gatot Gunawan Wibisono Gunawan Wibisono Halida Halida Hamzah Hamzah Haratua Tiur Maria Silitonga Haykal, Salman Daffa Herudin Herudin Herudin Herudin, Herudin Husnibes Muchtar Ibrahim Nawawi Imamul Muttakin Indra Surjati Indra Surjati Irma Saraswati Iznan H. Hasbullah Karolina, Venny Krisdiana Krisdiana, Krisdiana Liana Liana Lydia Sari M. Iman Santoso Muchamad Rifki Nuryanta Muchamad Yunus Muh Wildan Muhammad Harits Saifulloh Muhammad Harits Saifulloh Muhammad Ikhsan Apriadi.H Muhammad Sadikin Muhammad, Fadil Muztahidul, Islam Md Nita Junita Nita Junita Nourmayansa Vidya Anggraini Noviana Prima Nuraini, Debora Purnomo S. Priambodo Purnomo, Sabdo R. Deiny Mardian Wijayapraja Rahayu, Sang Ayu Putu Ri Munarto Rian Fahrizal Rian Sofhan RIYANDIKA, RIZKY Rocky Alfanz, Rocky Rohmadi Rohmadi romi wiryadinata Saputra, Errix Dwi Serri Hutahaean Sianipar, Juan Ronaldo Siswo Wardoyo Soenarto Soenarto Supriyanto Praptodiyono Supriyanto Supriyanto Suryadi Suryadi Syah Alam Syah Alam Syah Alam Taufiq A. Kurniawan Toto Supriyanto Tristan, Jose Immanuel urai salam Utomo, Tegar Priyo Vionita Apriliana Vionita Apriliana Wahyuni Martiningsih, Wahyuni Warneri . Wildan, Muh. Windu Prasetyo, Windu Wiyono Wiyono Yuli Kurnia Ningsih Zahidah - Zahriladha Zakaria