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All Journal International Journal of Electrical and Computer Engineering TEKNIK Transmisi: Jurnal Ilmiah Teknik Elektro Jurnal Sains Materi Indonesia TRANSIENT: Jurnal Ilmiah Teknik Elektro TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Jurnal Teknik Elektro Sinergi Jurnal Transformatika Jurnal Teknologi Elektro JURNAL NASIONAL TEKNIK ELEKTRO JTET (Jurnal Teknik Elektro Terapan) Proceeding of the Electrical Engineering Computer Science and Informatics Jurnal Teknologi dan Sistem Komputer TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol Buletin Ilmiah Sarjana Teknik Elektro Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Munawar Agus Riyadi
Departemen Teknik Elektro, Universitas Diponegoro Semarang, Jl. Prof. Sudharto, SH, Kampus UNDIP Tembalang, Semarang 50275, Indonesia. *)E-mail: Munawar@elektro.undip.ac.id
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Graphical Approach for RF Amplifier Specification in Radio over Fiber System: Maximum Power Issues Teguh Prakoso; Munawar Agus Riyadi; Razali Ngah
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 4: EECSI 2017
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (605.355 KB) | DOI: 10.11591/eecsi.v4.1101

Abstract

Radio-over-fiber (RoF) technologies address wireless communication’s need for high data rate, protocol- transparency, and flexibility. One of challenge in RoF access point design is RF amplifier requirement that match to microwave-photonic link chosen and service range needed. This paper proposes a graphical approach as systematic method to solve the challenge. The method identifies two regions, i.e. (a) scalable region where amplifiers’ output 1-dB compression point (OP1dB) improvement can enhance system’s maximum input and output power, and (b) saturation region where any improvement on amplifiers’ OP1dB cannot improve AP’s maximum input and output power. The methods have been verified by system simulations. The errors at scalable and saturation regions are less than 1 dB and the standard deviation is no more than 0.6 dB. The error values around the breakpoint between scalable and saturation regions are around 1 dB. Therefore, the proposed graphical approach can be used in the specification tradeoff between RoF access point input and output power, amplifier’s gain and OP1dB.
Development of Bio-impedance Analyzer (BIA) for Body Fat Calculation Munawar A Riyadi; A Nugraha; M B Santoso; D Septaditya; T Prakoso
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 3: EECSI 2016
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (849.619 KB) | DOI: 10.11591/eecsi.v3.1154

Abstract

Common weight scales cannot assess body composition or determine fat mass and fat-fress mass that make up the body weight. This research propose bio-impedance analysis (BIA) tool capable to body composition assessment. This tool uses four electrodes, two of which are used for 50 kHz sine wave current flow to the body and the rest are used to measure the voltage produced by the body for impedance analysis. Parameters such as height, weight, age, and gender are provided individually. These parameters together with impedance measurements are then in the process to produce a body fat percentage. The experimental result shows impressive repeatability for successive measurements (stdev ≤ 0.25% fat mass). Moreover, result on the hand to hand node scheme reveals average absolute difference of total subjects between two analyzer tools of 0.48% (fat mass) with maximum absolute discrepancy of 1.22% (fat mass). On the other hand, the relative error normalized to Omron's HBF-306 as comparison tool reveals less than 2% relative error. As a result, the system performance offers good evaluation tool for fat mass in the body.
Design-of-Experiment Based Systematic Tuning of Square Open Loop Resonator Teguh Prakoso; Imam Santoso; Munawar Riyadi
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 6: EECSI 2019
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eecsi.v6.1948

Abstract

Stub-loaded, square open loop resonator (SOLR) is a type of bandpass filter with dual-band response. It is believed that its center frequency values are determined by entire length of open loop resonator’s and open stub's lengths, the bandwidth values are determined by coupling between two resonators. However, design of experiments (DOE) method applied in this paper shows that the center frequency values are also affected by interaction between resonator length, stub length, and distance between the two resonators in pair. The DOE also shows that bandwidth values, both upper and lower bands, are not only affected by the distance between resonators but also by the resonator’s and stub’s lengths. Utilizing slope values of the significant factors, systematic tuning to SOLR can be done. With few steps, small error on frequency responses can be obtained.
Low-Power And High Performance Of An Optimized FinFET Based 8T SRAM Cell Design Nurul Ezaila Alias; Afiq Hamzah; Michael Loong Peng Tan; Usman Ullah Sheikh; Munawar A. Riyadi
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 6: EECSI 2019
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eecsi.v6.1951

Abstract

The development of the nanotechnology leadsto the shrinking of the size of the transistors to nanometerregion. However, there are a lot of challenges due to sizescaling of the transistors such as short channel effects (SCEs)and threshold voltage roll-off issues. Fin-Type Field EffectTransistor (FinFET) is another alternative technology tosolve the issues of the conventional MOSFET and increasethe performance of the Static Random Access Memory(SRAM) circuit design. FinFET based SRAMs are faster andmore reliable which are often used as memory cache for highspeed operation. However, 6T SRAM cell suffers from accesstransistor sizing conflict resulting in a trade-off between readand write stability. This paper presents an investigation ofthe stability performance in retention, read and write modeof 22nm FinFET based 8T SRAM cell. The performancecomparison of 22nm FinFET based 6T and 8T SRAMs weremade. The simulation of the SRAM model are carried out inGTS Framework TCAD tool based on 22nm technology. In8T SRAM cell, two n-FinFETs are added to the conventional6T SRAM cell which will be controlled by the Read WordLine (RWL) to isolate the read and write operation path forbetter read stability. FinFET based 8T SRAM cell givesbetter performance in Static Noise Margin (SNM) and powerconsumption than 6T SRAM cells. The simulation resultsaffirms the proposed FinFET based 8T SRAM improvedread static noise margin by 166.67% and power consumptionby 76.13% as compared to the FinFET based 6T SRAM.
Design of Integrated Bioimpedance Analysis and Body Mass Index for Users with Special Needs Ganjar Winasis; Munawar Riyadi; Teguh Prakoso
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 7, No 1: EECSI 2020
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eecsi.v7.2057

Abstract

This research was conducted with the aim to build integration between Bioimpedance Analysis (BIA) and Body Mass Index (BMI) for users with special needs. The proposed system can measure height, weight, BMI and body composition simultaneously to be used by the elderly population and handicapped users. The proposed system is developed as a chair equipped with several system blocks, namely BIA block, BMI block, power supply block, and microcontroller block. Before starting the measurement, users only need to enter their age and gender data. The whole system is controlled by using Arduino Mega 2560 on the microcontroller block equipped with keypad for data input and an LCD to display measurement results. System testing is performed by comparing the measurement results with Omron HBF-375. The test involved 8 volunteers (4 males and 4 females). The test results show that the integrated BIA-BMI works well with an average error of 1.5%.
ROTATED RECTANGULAR SLOTS AND MIRRORED INVERSED CANTOR-SETS ON ULTRAWIDEBAND ANTIPODAL VIVALDI ANTENNA Sabri Alimi; Teguh Prakoso; Munawar Agus Riyadi
SINERGI Vol 23, No 2 (2019)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (379.542 KB) | DOI: 10.22441/sinergi.2019.2.011

Abstract

Variants of antipodal Vivaldi antenna (AVA) design suitable for access point working on 0.5 – 6.0 GHz are proposed in this paper. The novel designs were produced by employing three novel techniques to conventional AVA: (i) rotated-slot pattern to shift down the frequency cutoff and enhancing bandwidth, (ii) curve design to miniaturize rotated-slot-inserted antipodal Vivaldi, and (iii) fractal-director (Cantor set) to increase the gain of antipodal Vivaldi. Using FR4 (relative permittivity of 4.4) with an overall dimension of 300 mm x 143 mm x 1.6 mm the antenna designs are able to work at a frequency of 0.472 GHz to higher than 6 GHz with a maximum gain of 11.9 dBi.
Classification of motor imagery brain wave for bionic hand movement using multilayer perceptron Sapto Budi Priyatno; Teguh Prakoso; Munawar Agus Riyadi
SINERGI Vol 26, No 1 (2022)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2022.1.008

Abstract

Physical disability due to amputation can affect a person's quality of life due to limited movement in performing daily activities. Bionic hands are used to help someone with an amputation disability. This research developed a bionic hand control based on electroencephalography sensors capable of measuring the brain's bioelectric activity. The classified brain wave was then translated as activity pattern information. The alpha & beta waves were the focus of this work. This study demonstrated a method to extract and classify motor imagery of brainwave activity patterns. The Fast Fourier Transform (FFT) method extracts motor imagery characteristics. The extraction of features is then classified by the Multilayer Perceptron (MLP) method for five classes of bionic hand movement. Testing was conducted with two scenarios. The first test motor imagery without additional movement showed an accuracy of 77.20 %, while the second test motor imagery combined with head movement showed an accuracy of 84.40% for five classes. The system based on motor imagery has been implemented in a bionic hand that shows the applicability of the proposed method.
Sistem Tracking Panel Surya Untuk Pengoptimalan Daya Menggunakan Metode Kendali Logika Fuzzy Alfin Imadul Haq; Sumardi .; Munawar A Riyadi
SINERGI Vol 18, No 3 (2014)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.865 KB)

Abstract

Salah satu jenis energi alternatif yang berkembang pesat dan banyak digunakan adalah energi matahari yang digunakan sebagai pembangkit listrik, dalam bentuk panel surya. Dalam rangka mengoptimalkan penggunaan panel surya tersebut, diperlukan sebuah sistem pengendali yang dapat mengontrol posisi panel surya agar selalu mengikuti arah dan posisi dari matahari secara otomatis. Sistem yang digunakan untuk pengaturan tersebut dinamakan sistem tracking matahari dengan dua derajat kebebasan. Sistem ini bekerja menggunakan perubahan daya yang terbaca oleh panel surya. Kelebihan dari sistem ini dapat mengikuti posisi matahari. Dalam sistem ini digunakan perbandingan daya yang terbaca oleh sistem dan mencari yang paling optimal diantara daya tersebut. Berdasarkan perbedaan daya yang diterima, Kendali Logika Fuzzy akan menggerakkan motor servo untuk melakukan aksi kendali terhadap posisi panel surya supaya selalu  tegak lurus terhadap posisi matahari. Perbandingan respon unjuk kerja antara sistem yang tanpa menggunakan kontroler fuzzy yaitu tegangan =15,40 V, arus = 0,46 A, dan daya = 7.17 W , sedangkan untuk sistem yang menggunakan kontroler fuzzy 2 DOF (Degree Of Freedom) menghasilkan tegangan = 15,54 V, arus = 0,51 A, dan daya = 7.94  W. Sistem yang dibuat sudah mengikuti matahari untuk mencapai daya yang maksimal.
Pengendali Suhu Purwarupa Pengering Gabah Berbasis Mikrokontroler Menggunakan Metode Kendali PI Munawar Agus Riyadi; Umair Al-Anshory; Iwan Setiawan
TELKA - Jurnal Telekomunikasi, Elektronika, Komputasi dan Kontrol Vol 5, No 1 (2019): TELKA
Publisher : Jurusan Teknik Elektro UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/telka.v5n1.74-82

Abstract

Proses pengeringan gabah di Indonesia umumnya dilakukan dengan pemanasan matahari di luar ruang, sehingga metoda pengeringan tersebut sangat tergantung pada musim dan cuaca. Untuk mengatasi masalah tersebut diperlukan sebuah alat pengering gabah yang memiliki sistem kendali suhu agar dapat melakukan pengeringan sampai dengan kadar air yang diinginkan dengan suhu pemanasan yang optimal. Pada penelitian ini dirancang purwarupa sistem pengendalian suhu pengering gabah menggunakan sensor DHT22 sebagai pengukur suhu udara, heater sebagai elemen pemanas, dan mikrokontroler ATMega328P sebagai pengendali. Metoda kendali yang digunakan untuk mengendalikan suhu prototype pengering gabah adalah metoda kendali Proportional Integral (PI). Parameter kendali PI diperoleh melalui metoda tuning Ziegler Nichols 1 dengan nilai Kp = 186,16 dan Ti = 33,3. Hasil pengujian sistem pengendali menggunakan parameter kendali PI ini memiliki unjuk kerja yang baik karena mampu mencapai dan mempertahankan suhu plant pada referensi yang diingikan serta dapat mengatasi gangguan yang terjadi.
Rancang Bangun Bioelectrical Impedance Analysis (BIA) Multifrekuensi berbasis ARM Afin M Nurtsani; Baron Murianda; Teguh Prakoso; Yuli Christyono; Munawar Agus Riyadi
TELKA - Jurnal Telekomunikasi, Elektronika, Komputasi dan Kontrol Vol 5, No 2 (2019): TELKA
Publisher : Jurusan Teknik Elektro UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (975.837 KB) | DOI: 10.15575/telka.v5n2.147-155

Abstract

Timbangan badan biasa tidak dapat membedakan antara massa lemak dan massa non lemak. Oleh karena itu, dibutuhkan suatu alat pengukuran yang mampu membedakan massa lemak dan massa non lemak. Untuk mengetahui komposisi tubuh, digunakan metode Bioelectrical Impedance Analysis (BIA) yang memiliki keunggulan yaitu murah, mudah, dan portable. Penggunaan frekuensi yang berbeda pada BIA memberi kelebihan pada kemampuan segmentasi. Untuk itu, pada penelitian ini, dilakukan rancang bangun BIA yang bekerja pada beberapa frekuensi berbeda, yaitu Multi Frequency Bioelectrical Impedance Analysis (MFBIA). Sistem pengolahan sinyal BIA dirancang berbasis ARMSTM32F103C8T6. Hasil penelitian menunjukkan bahwa sistem pengolah sinyal dapat menghasilkan data persentase lemak tubuh. Galat relatif dari sistem pengolah sinyal sebesar 9,926% pada metode Hand-to-Hand, dibandingkan terhadap alat pembanding komersial sejenis.
Co-Authors A Nugraha A. Brian Ikhsana P.A.W, A. Brian Ikhsana Achmad Adi Sulistiono, Achmad Adi Achmad Hidayatno Achmad Ngaqib Muthouwali Achmad Ulul Azmy Adam Kusuma Wardana Adha, Shafa Aulia Adhi Nugraha Adi Cifriadi Aditya Aditya Aditya Pratama Affandi, Muhammad Afif Afin M Nurtsani Afiq Hamzah Ajib Abdurrachman Ajub Ajulian Zahra Macrina Al Fadli, Muhammad Hanifudin Alfianto, Indra Alfin Imadul Haq Alfin Imadul Haq Aminuddin Rizal, Aminuddin Andreansyah, Muhammad Iqbal Aprivirly, Lintang Nurlitha Arfan, M Arif Rahman Hakim Aris Triwiyatno Barnas Holil Baron Murianda Bawono, Ajie Nugroho Benny Raharjo, Benny Budi Setiyono Budi Setiyono D Septaditya Danang Septaditya Hidayat Syah, Danang Septaditya Danniswara, Satya Darjat Darjat Deris Stiawan Destyawan Saputra, Destyawan Dwi Prasetyo Wirawan, Dwi Prasetyo Ezaila Alias, Nurul Fathin Naufal, Haidar Ali Firman Eka Saputra, Firman Eka Fitriansyah, Rizko Prasada Frangky Chandra, Frangky Franky Surya Parulian Fuad Hasan Hamzah, Afiq Hanif, Muhammad Harisuddin Hermawan Hermawan I Gusti Bagus Wiksuana Ilham Akbar Sukmawan, Ilham Akbar Imam Much Ibnu Subroto Indra P. S. Damanik, Indra P. S. Irawan D Sukawati Irawan Dharma S., Irawan Dharma Irawan Dharma Sukawati, Irawan Dharma Irvan Aditya Iskandar, Irvan Aditya Ismail Saad Ivransa Zuhdi Pane Iwan Setiawan Iwan Setiawan Jatmiko E. Suseno Johanes Nugroho Adhi Prakosa Jumiasih, Jumiasih Karnoto . Lina Handayani Loong Peng Tan, Michael M B Santoso M. Pramuaji Tri Saputro, M. Pramuaji Maman Somantri Michael Loong Peng Tan Mizanul Haq, Mizanul Mochammad Facta Muflih, Muhamad Muhamad Muflih Muhammad Fahmi Awaj Muhammad Faizal Afriansyah Muhammad Faizal Afriansyah, Muhammad Faizal Muhammad Taufiqurrahman Muhammad Taufiqurrahman, Muhammad Mustikoaji, Yosia Gita Muthouwali, Achmad Ngaqib Nasrullah, Muhammad Azka Nasution, Ali Napiah natanael pandapotan, natanael Ngah, Razali Nurul Ezaila Alias Oktavianto, Tedi Pamungkas, Okthavianus Bayu Pane, Ivranza Zuhdi Parulian, Franky Surya Perkasa, Dedy Bagus Pradana, Muhammad Ivan Pratama, Ismail Rifqi Primanggani, Stevanus Putra, Florian Destito R Rizal Isnanto R. Rizal Isnanto Rahmat Rizeki, Rahmat Ramadhan, Ihsan Razali Ismail Razali Ngah Reza Heryanto S, Reza Heryanto Rio Lenardo Karo Karo, Rio Lenardo Rizka Hendrawan, Rizka Sabila, Liya Yusrina Santoso, Imam Sapto Budi Priyatno Satria, Brama Yoga Sidiq Hidayatulah, Sidiq Solichudin Solichudin Sudewanto, Suhardhika Sih Sudjadi Sudjadi Suhardhika Sih Sudewanto Sukiswo Sukiswo Sulila, Muhammad Surya Sumardi . Sumardi . Sumardi . Syuja Rizqullah T Prakoso Tatas Ardhy Prihanto, Tatas Ardhy Tawa'qi, Muhammad Sehatian Teguh Prakoso Teguh Prakoso Tejo Sukmadi Tole Sutikno Trias Andromeda Ullah Sheikh, Usman Umair Al-Anshory Usman Ullah Sheikh Wardhana, Ariya Dwi Wardhana, Irfan Agung Widaningrum, Lidya Widyati, Dian Ami Winasis, Ganjar Yoga Krismawardana Yuli Christiyono Yuli Christyono Yusuf H. Hendrayana, Yusuf H. Zebua, Christian Charisma Zeta Hanif Salindri, Zeta Hanif Zulhar, Fachrian