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All Journal International Journal of Electrical and Computer Engineering JTEV (Jurnal Teknik Elektro dan Vokasional Jurnal Simetris TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Sinergi Pedagogi : Jurnal Penelitian Pendidikan ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Proceeding of the Electrical Engineering Computer Science and Informatics JET (Journal of Electrical Technology) Seminar Nasional Teknologi Informasi Komunikasi dan Industri InComTech: Jurnal Telekomunikasi dan Komputer Jurnal Elektronika dan Telekomunikasi Journal of Applied Engineering and Technological Science (JAETS) International Journal of Electrical, Energy and Power System Engineering (IJEEPSE) Unri Conference Series: Community Engagement J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat) Jurnal INFOTEL BATOBO: Jurnal Pengabdian Kepada Masyarakat Science, Technology, and Communication Journal JTPPm (Jurnal Teknologi Pendidikan dan Pembelajaran) : Edutech and Intructional Research Journal Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics

Yusnita Rahayu

(Scopus ID : 24822760300) Department Of Electrical Engineering, Universitas Riau

Author-ID : 355157

Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Social Sciences Other

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Analisa Kinerja Sistem Radio Over Fiber (ROF) Menggunakan Teknik Quadrature Amplitude Modulation (QAM) Untuk Jaringan Wireless Local Area Network (WLAN) Halimah, Nikmatul; Rahayu, Yusnita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The development of data telecommunications with high speed and wide coverage is currently getting higher and higher. Therefore a reliable network can provide a network with large bandwidth and capacity which is called Radio Over Fiber (ROF). Radio Over Fiber (ROF) is a combination of Radio Frequency (RF) and optical fiber-based communication, where ROF uses optical fiber as an intermediary medium. This study designed a ROF that operates at a frequency of 5.8 GHz using Quadrature Amplitude Modulation (QAM) techniques for the application of Wireless Local Area Network (WLAN). The parameters considered in this research simulation are the value of BER, Q-Factor, and eye diagram using optisystem software. Based on the results of the analysis, the best BER on the 8-QAM modulation technique with a distance of 50 km is 9.02362 x 10-13 and the Q-Factor is 7.00782. Keywords: Radio Over Fiber, Bit Error Rate, Q-Factor, QAM, WLAN

Perancangan Dan Simulasi Antena Fleksibel Menggunakan Substrat Polydimethylsiloxane Untuk Aplikasi Pendeteksi Tumor Payudara Hilmi, Muhammad Fadhlurrahman; Rahayu, Yusnita; Wahyu, Yuyu
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Microwave imaging system is one of the technologies that can be used to detect objects, especially in the field of medical diagnoses, such as detecting tumors in the breast. The technology used is ultrawideband (UWB) with the advantages of low cost, low power consumption, and high transmission capacity. In this study, a flexible antenna was designed at a frequency of 5.8 GHz using a polydimethylsiloxane (PDMS) substrate with a dielectric constant of 2.67 – 3.00 and a loss tangent of 0.02-0.05 for breast tumor detection applications. The antenna design process uses the CST studio suite software. The simulation results of a flexible antenna at an operating frequency of 5.8 GHz with a return loss parameter of -39.19 dB, a VSWR of 1.22, a bandwidth of 3.1 GHz in a frequency range of 4.52–7.62 GHz, the resulting radiation pattern is almost omnidirectional, and a gain of 2.26 dBi. In addition, the gain of flexible antenna with phantom breast without tumor is -23.62 dB and phantom breast with tumor is -24.85 dB at operating frequency of 5.5 GHz, which is shifted by 300 MHz from the desired frequency. Keywords: microwave, ultra-wideband (UWB), flexible antenna, polydimethylsiloxane (PDMS)

High gain 5G MIMO antenna for mobile base station Yusnita Rahayu; Indah Permata Sari; Dara Incam Ramadhan; Razali Ngah
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 1: February 2019
Publisher : Institute of Advanced Engineering and Science

This article presented a millimeter wave antenna which operated at 38 GHz for 5G mobile base station. The MIMO (Multiple Input Multiple Output) antenna consisted of 1x10 linear array configurations. The proposed antenna’s size was 88 x 98 mm^2 and printed on 1.575 mm-thick Rogers Duroid 5880 subsrate with dielectric constant of ε_r= 2.2 and loss tangent (tanδ) of 0.0009. The antenna array covered along the azimuth plane to provide the coverage to the users in omnidirection. The simulated results showed that the single element antenna had the reflection coefficient (S11) of -59 dB, less than -10 dB in the frequency range of 35.5 - 39.6 GHz. More than 4.1 GHz of impedance bandwidth was obtained. The gain of the antenna linear array was 17.8 dBi while the suppression of the side lobes was -2.7 dB. It showed a high array gain throughout the impedance bandwidth with overall of VSWR were below 1.0646. It designed using CST microwave studio.

Design LTE Microstrip Antenna Rectangular Patch with Beetle-Shaped Slot Yusnita Rahayu; Haziq Hazman; Razali Ngah
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 15, No 3: September 2017
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v15i3.5493

In this paper, the microstrip antenna rectangular patch with beetle shaped slot is presented. The characterization results of the proposed antenna obtained by changing the dimensions of the ground plane. CST software is used to design and analyze this proposed antenna. The simulated results of proposed antenna show that the antenna works at the frequency of 2.1 GHz while the return loss of -32.18 dB with the bandwidth reaches 155.19 MHz and the gain of 3.895 dBi.

Design MIMO 1x8 Antenna for Future 5G Applications Yusnita Rahayu; Muhammad Rifqy Asrul; Tulus Rahayu
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 2: April 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i2.8383

This paper presented the design of MIMO 1x8 antenna operating at 38 GHz for future 5G applications. The antenna used the Rogers RT / duroid 5880 substrate with a thickness of 0.787 mm and a dielectric constant of 2.2. This antenna has 1x8 elements with 13.4 dBi of gain and the return loss of -15.76 dB. It has approximately 1.294 GHz bandwidth within the range of 37.485 GHz-38.779 GHz. The comparison performances between both antennas MIMO 1x4 and 1x8 are also discussed. It is shown that both radiation patterns are similar. The increasing number of elements affect to the gain and frequency. The proposed antenna meets the 5G requirements.

Design of Circular Patch with Double C-Shaped Slot Microstrip Antenna for LTE 1800 MHz Yusnita Rahayu; Jherino Permana Putra
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 15, No 3: September 2017
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v15i3.5492

The design of a circular patch microstrip antenna with double C-shaped for LTE 1800 MHz is presented. The antenna is designed using FR-4 with dielectric constant of ε = 4.3, with thickness of substrate that is 1.6 mm and the thickness of patch and ground are 0.025 mm, Respectively the simulation results presented that the antenna works at frequency of 1714-1889.6 MHz, and work very well at frequency of 1800 MHz with a Return loss -20.484 dB, bandwidth 175.6 MHz. Technique used for broaden the bandwidth by using double C-shaped slot. In this paper presents S-Parameters, and Gain of microstrip antenna circular patch with double C-shaped slot.

Characteristics MIMO 2x4 Antenna for 5G Communication System Yusnita Rahayu; Jodi Wijaya; Elsa Syafitri
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 4: August 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i4.8377

This paper presents the characteristic MIMO 2x4 antenna for 5G communication system. The proposed antenna works at 28 GHz and simulated by using CST simulation software. The antenna uses RT Duroid 5880 substrate with dielectric constant of 2.2. The MIMO antenna consists of eight elements with rectangular patches and inset feeding. The dimension of patch (Wp x Lp) is 6 mm x 8 mm. There are three (3) antenna configurations derived in this paper such as; single element, 1x4 elements and 2x4 elements. The MIMO 1x4 elements antenna configuration is designed based on the single element antenna with the distance between center to center elements antennas of 5 mm. The MIMO 2x4 antenna is formed from the MIMO 1x4 element configuration with the opposite direction. The 2x4 element antenna, a distance between opposite antenna elements is 10 mm. From the simulation results, it is shown that by increasing the number elements of antenna affect to the directivity and the return loss. Antenna with 2x4 elements has 14 dBi of directivity with the return loss of -19 dB. While antenna with 1x4 elements, the directivity obtained is 14.3 dBi with return loss of -18 dB.

Simulation of 6 Elements Aperture Coupled Feed Planar Array Rectangular Microstrip Patch Antenna for CPE WiMAX Application at 3.3 GHz Yusnita Rahayu; Rezki Ananda Gusma
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 1: EECSI 2014
Publisher : IAES Indonesia Section

In this paper, Simulation of the 6 Elements Aperture Coupled Feed Planar Array Rectangular Microstrip Patch Antenna is designed for CPE WiMAX Application. This Antenna uses Aperture Coupled feed to improve bandwidth. The Proposed antenna is compared to similar design of antenna with Microstrip Line feed, to justify that the proposed antenna produces broader bandwidth. Both of Antennas are designed and simulated by using HFSS simulation software and operated in WiMAX frequency range of 3.3 GHz. The 6 Elements Aperture Coupled Feed antenna gives an impedance bandwidth of 10.53 %, this is broader than the 6 Elements Microstrip Line Feed Antenna which is only has impedance bandwidth of 6.23 %. The maximum gain is obtained 8.4327 dBi at 3.4 GHz. Details of antenna design are given and simulation results are discussed.

Design and Development of Gas Leakage Monitoring System using Arduino and ZigBee Huan Hui Yan; Yusnita Rahayu
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 1: EECSI 2014
Publisher : IAES Indonesia Section

Gas leakage in industrial area causes many health issues. Thus, to prevent such disasters happen, the atmosphere of a workplace should be regularly monitored and controlled, in order to maintain the clean air environment. However, efforts in industrial air quality control have been impeded by the lack of science-based approaches to identify and assess atmosphere air quality and level of dangerous gas. Therefore, a monitoring system for gas leakage detection needs to be developed. For the development of this system, the combustible gas sensor (MQ9) was used in order to detect the present of methane (CH4) and carbon monoxide gas (CO). This sensor will detect the concentration of the gas according to the voltage output of sensor and operated in the alarm system, autonomous control system and monitoring system by using Arduino uno as the microcontroller for the whole system. Whereas the Zigbee will send the data reading from the gas sensor to monitoring system that display on LabVIEW Graphical User Interface (GUI). Besides, user can take immediate action upon the leakage occurs, else the gas supply and the system will shut down automatically within 10 minutes to prevent the condition becoming worst.

Sistem Monitoring Secara Real-Time Pencemaran Air Sungai Siak Pekanbaru Berbasis IOT Fajar Syafrianda; Yusnita Rahayu
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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This research was aimed to indicate in real-time the level of water turbidity and heavy metals (zinc, lead and iron) concentration in water of Siak river by creating a prototype design of monitoring tools. The research was conducted from upstream and downstream of the Siak River at Rumbai Pesisir Sub-District Pekanbaru. The turbidity sensor and TDS EC Meter were used by the researcher to measure the level of water turbidity. The researcher also conducted some laboratory tests in order to get the data about heavy metal concentration in water. The results were converted into NTU (Nephelometric Turbidity Units) and were shown on the website and database in graphic form by using Internet of Thing (IoT). The findings of the research showed that the level of turbidity in water of Siak River was categorized as “Poor” This can be seen from the result in which the overall score was 90-120 NTU (Nephelometric Turbidity Units). Meanwhile, based on the laboratory test result, the heavy metal concentration showed there are some transformations in water of the Siak River. Keywords: Turbidity sensor, NTU (Nephelometric Turbidity Units), IoT, Siak River

Co-Authors Abd. Rasyid Syamsuri Abdul Muttaqin Adit Kurniawan Adit Kurniawan Adiya, M. Hasmil Afif, Luthfi Ahmad Mudhirullaq Syam Akmal Akmal Alfannizar, Ibnu Alfaridho Haqiqi Ali, Arbiansyah Amir Hamzah Ananda Gusma, Rezki Andhi, Rahmat Rizal Andika, Mayo Angga Pratama Anggie Kurnia Fareri Anggreani, Dyan Anhar Anhar Anhar Anhar Anjli Wulandari Antonio Virdis Arief Budi Santiko, Arief Budi Aris Setiawan Artiyah, Iklil Azhary, Muhammad Raihan B. P, Yoga Bagus Edy Sukoco Budi Prasetyo Budi Prawara Candra, Feri Chaeriah Bin Ali Wael Chandra Chandra Cucu Atikah D, Dyan Anggreani D.A, Raja Dahliyusmanto, Dahliyusmanto Daniel Junianto Dara Incam Ramadhan Dara Incam Ramadhan Darbi, Ahmad Devi Willieam Anggara Dewi Nasien Dheo Erfiansyah Dian Rahmanda Dian Yayan Sukma, Dian Yayan Dio Resya Baaqii Edi Susilo Eko Prasetio Elsa Syafitri Erick Justin Sanjaya Erlin Ery Safrianti Fadhli Kabir Fajar Syafrianda Fajrinnida Desfitri Fariz, Ilma Fauziana Feranita Feranita Feri Candra Feri Saputra Fitria, Lisma Franatha, Vickri Wira Fri Murdiya, Fri Gamaliel Saverius Siregar Gilang Bagaskara Gilang Bagaskara, Gilang Halimah, Nikmatul Hamdala Hamdala Hamdani, Eddy Haziq Hazman hazwan hazwan Hendrawan Kurniadin Hidayat, Muhammad Ibnu Hidayat, Sholeh Hidayatul Amin Hikmah Adi Putra Hilmi, Muhammad Fadhlurrahman Huan Hui Yan Huriatul Masdar I. Yasri Ibnu Alfannizar Ibrahim As Ikmal, Muhammad Ilham Dwi Anshori Ilham Ilham Immanuel Waruwu Indah Permata Sari Indah Permata Sari Indra Yasri Irfan Alwandi Pohan Irfan Alwandi Pohan IRSAN TAUFIK ALI Jack Ping Soh Jherino Permana Putra Jherino Permana Putra Jodi Wijaya Johanes Firdaus Junianto, Daniel Junianto, Daniel Ken Paramayudha KHOIRUL ANWAR Kurnia Alfikri Kurnia Alfikri Kurnia Alfikri, Kurnia KURNIATI, MEILITA Lara Putri Utami Linna Oktaviana Sari Lubis, Ahmad Sofyan Luthfi Afif Luthfi Afif Makmul Siddiq Harahap Maulana Hafez Reza Meliza Sukma Riani Middinali, Nadjum Mudinillah, Adam Muhammad Abrar Muhammad Fadhlurrahman Hilmi Muhammad Ibnu Hidayat Muhammad Ikmal Muhammad Ridho Efendi Muhammad Rifqy Asrul Muhammad Rifqy Asrul Muhammad Rizki Radhelan Muhammad Saiful Fadhil Reyhan Mustofa, Ivan Rafli Muttaqin, Abdul Nafisyah Apriani Nasution, Abdul Risyal Nola Gabriella Hutapea Nugraha, Wahid Nova Nulhakim, Lukman Nurhalim Dani Ali Ping Jack Soh Pohan, Irfan Alwandi QODRIYAH, INESTI LAILATUL R.A Rizka Qori Yuliani Putri Radhelan, Muhammad Rizki Rahmat Deni Rahmat Maulana Rahyul Amri Ramadoni Ramadoni Rando Saputra Rangganis Rangganis Razali Ngah Razali Ngah Rendi Efriyendro Rezki Ananda Gusma Rezki Ananda Gusma Rhendy Theopilus Silalahi Rhendy Theopilus Silalahi, Rhendy Theopilus Rifki Rifki Rio Juli Hendra Rio Wira Putra RITONGA, NICOLAS PEDRO Rivaldy Anggara Rizky Nelar Lesmana, Rizky Nelar Romeo Saputra Ros Sariningrum Rosdiansyah, Rosdiansyah Rudi Haryadi, Rudi Saftriansyah MZ Salhazan Salhazan Saputra, M. Feri Sarnia Rizki Oktareza Septian Tri Wahyudi, Septian Tri Septyo Adi Pratama Sholeh, Mohamad Simanihuruk, J. R. M Sofyan Lubis, Ahmad Suganda, Ilham Ferdian Suwitno Suwitno, Suwitno Syafitri, Elsa Syahputra, Muclas Habib Syam, Ahmad Mudhhirulhaq Syam, Ahmad Mudhirullaq Tasya Kirana Taufiq Muammar Taufiq Muammar, Taufiq Teguh Praludi Teguh Praludi Teguh Praludi Teguh Praludi Topik Teguh Estu Tulus Rahayu Wahid Nova Nugraha Waruwu, Immanuel Yan, Huan Hui Yana Taryana Yasri, I. Yaya Sulaeman Yayat Ruhiat Yofan Hakiki Yoga Bayu Pradana Yoshihide Yamada Yudi Yuliyus Maulana, Yudi Yuliyus Yussi Perdana Saputera Yuyu Wahyu Yuyu Wahyu Zikri Pradana Zikri Pradana, Zikri

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