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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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PERANCANGAN ANTENA DENGAN CIRCULAR LINE PATCH DAN THICK LINE UNTUK LTE FREKUENSI 1.8 GHZ Yusnita Rahayu; Kurnia Alfikri; Rhendy Theopilus Silalahi
SINERGI Vol 21, No 1 (2017)
Publisher : Universitas Mercu Buana

Antena Circular line patch memiliki bentuk patch circular dan antena Thick line memiliki patch rectangular. Kedua antena ini mampu bekerja secara optimal pada frekuensi 1.8 GHz. Software CST digunakan dalam perancangan dua antena ini dan dilakukan beberapa kali pengkarakterisasian. Untuk antenna circular line patch, didapat hasilnya yaitu pada frekuensi kerja 1.8 GHz dengan return loss -24.36 dB, bandwidth 160 MHz, dan gain 2.457 dBi. Antena thick line patch dan circular slot, didapat hasilnya yaitu pada frekuensi 1.8 GHz dengan return loss -26.493 dB, bandwidth 213 MHz, dan gain 2.26 dBi.

POWER SUPPLY MANAGEMENT SYSTEM DESIGN ON NODE EARLY WARNING SYSTEM FOR PEATLANDS FIRE MITIGATION Taufiq Muammar; Rahyul Amri; Yusnita Rahayu
SINERGI Vol 22, No 1 (2018)
Publisher : Universitas Mercu Buana

Early warning system is one of the technology to detect land fires by utilizing a network of wireless sensors. Constant data transmission by the sensor nodes consumes a large amount of energy on the nodes’ sides that could affect the battery’s longevity. This research is done to discover the amount of power consumption and battery longevity during fire emergencies, and during non-emergency situation on peatlands. Power saving on the fire detecting system uses an LM35 temperature sensor, ATmega8 micro-controller and HC-12 transmission module. The overall result of powered by a 9 volt battery during fire emergencies, and during non-emergency, the power consumption reaches up to 1 Wh, with various longevity levels of the battery. The implementation of sleep/wake up mode scheduling during fire emergencies and non-emergencies could save battery for 2 hours compared to those without the power saving mode implementation. Power saving during fire emergency could be minimalized by activating the sleep mode activation power-down on the micro controller and it can also set the data transmission schedule to minimalize data usage during fire emergency, so that the usage of sleep/wake up mode interval scheduling during transmission could minimalize energy consumption and elongate the power supply active period.

DUAL BAND ANTENA DESIGN MIKROSTRIP DENGAN BENTUK SLOT BYEMAX UNTUK PENERAPAN FREKUENSI 2.1 GHz LTE Yusnita Rahayu; Zikri Pradana
SINERGI Vol 21, No 2 (2017)
Publisher : Universitas Mercu Buana

Antena dual-frequency merupakan antena alternatif yang dapat digunakan untuk sistem radio yang bekerja pada dua kanal frekuensi yang berbeda jauh. Ketika dua frekuensi kerja terpisah dengan jarak yang cukup jauh, sebuah struktur patch dual-frequency dapat dirancang untuk menghindari penggunaan antena yang terpisah. Antena mikrostrip adalah salah satu solusi antena dual-frequency yang dapat dikembangkan, karena memiliki bentuk sederhana, unjuk kerja yang baik dan mudah dalam instalasinya.Jurnal ini membahas desain dari elemen antena dengan cylinder patch dengan slot byemax yang terobsesi dari film animasi. Patch mikrostrip antena dirancang dengan menggunakan perhitungan lebar patch (wp) dan panjang patch (lp). Desain dan simulasi antena mikrostrip membutuhkan software CST.

TRANSPARENT ENERGY HARVESTING ANTENNA FOR VEHICLE WINDSHIELD APPLICATION Yusnita Rahayu; Muhammad Ikmal; Ahmad Mudhirullaq Syam; Daniel Junianto
SINERGI Vol 23, No 1 (2019)
Publisher : Universitas Mercu Buana

This paper presents a transparent energy harvesting antenna for a vehicle windshield application. The antenna is designed using AgHT-4 with a thickness of 0.175 mm and the glass substrate (Ɛr= 4.82) with a thickness of 2 mm. The antenna has dimensions of 46.238 x 35.4 mm. The antenna is designed and simulated in CST simulation software. It shows that the return loss of -32.76 dB obtained at 2.2412 GHz with broad directional pattern and a gain of 5 dBi. The rectifier circuit of RF energy harvesting will charge the energy storage by utilizing the ambient RF signals from the environment, convert it to the DC signal, and using the DC signal to charge the energy storage. This antenna is intended to be mounted on a car windshield to provide Wi-Fi signals to passengers

DESIGN OF RECTANGULAR WITH 3 SLOT MICROSTRIP ANTENNA FOR APPLICATION LTE 2.1 GHz Yusnita Rahayu; Irfan Alwandi Pohan
SINERGI Vol 22, No 2 (2018)
Publisher : Universitas Mercu Buana

A rapid development of telecommunications technology, and over time, the existing network technologies continue to be developed. To create the latest technology called Long Term Evolution (LTE). With the technology that has a high transmission speed, of course, required new devices that can operate on this network. Antennas are needed on these networks is an antenna that is small and easily integrated. In this case, the right antenna to be used is the microstrip antenna. In this paper, which will be designed antenna is an antenna feed line rectangle shapes that can operate at a frequency of 2.1 GHz.

DESIGN OF 28 GHZ MICROSTRIP MIMO ANTENNAS FOR FUTURE 5G APPLICATIONS Yusnita Rahayu; Luthfi Afif; Muhammad Rizki Radhelan; I. Yasri; Feri Candra
SINERGI Vol 22, No 3 (2018)
Publisher : Universitas Mercu Buana

The 5G system requires more significant system capacity, more full bandwidth, and higher frequency. One type of antenna that can be used to increase the channel capacity is microstrip MIMO antenna. The Federal Communications Commission of the U.S. has recently designated the frequency band from 27.5 to 28.35 GHz for 5G applications. In this paper, the design of 28 GHz microstrip MIMO antenna for future 5G applications was proposed. The antenna was designed by using RT Duroid 5880 substrate with a dielectric constant of 2.2 and the loss tangent of 0.0009. The antenna operated from 27.10 GHz to 28.88 GHz with 1.78 GHz (6.35%) of bandwidth. The antenna consisted of four elements feeding by a microstrip line. Based on the simulated results, the high gain of 14.8 dBi is obtained with a linear directional pattern. Comparison performance regarding gain, return loss, VSWR and bandwidth are also presented for single, two and four elements. It is shown that the increasing number of elements of antenna increased the gain and the return loss. The antenna meets the 5G requirements.

EARLY DETECTION OF BREAST CANCER USING ULTRA WIDE BAND SLOT ANTENNA Yusnita Rahayu; Immanuel Waruwu
SINERGI Vol 23, No 2 (2019)
Publisher : Universitas Mercu Buana

Breast cancer is the transformation of normal cells in the breast area into a malignant tumor, which is the second largest disease as a cause of death for women. Early detection is one way to avoid significant risks in breast cancer. X-ray mammography and magnetic resonance imaging (MRI) techniques are used to detect breast cancer. However, those techniques have several limitations. Ultra-wideband (UWB) microwave imaging, approved by The Federal Communications Commission (FCC) in the United States, has promising capabilities in detecting breast cancer. Microwave imaging uses a microstrip antenna that has the advantage of convenience, potentially low cost, and is a non-ionized and safe alternative. In this paper, the ultra-wideband microstrip antenna for breast cancer detection is proposed. The antenna was designed by adding some rectangular slots on a rectangular patch to meet the UWB specifications. The antenna works well at 8.41 GHz to 10.29 GHz with directivity of 6.451 dBi and SAR value of 1.6 W / kg. The antenna was simulated with breast phantom. The tumor sizes of 6 mm and 10 mm are added to evaluate the E/H fields and current density with and without tumor. The highest E-Field value of 928.8 V / m was obtained at 10 GHz with a 10 mm tumor size. The highest H-Field value of 4.06 V / m was achieved at 10 GHz with a 6 mm tumor size. From the simulation, the E/H-field and current density are higher if there is a tumor in the breast compared to the breast without the tumor.

RANCANG BANGUN SISTEM PENDETEKSI KEBAKARAN LAHAN GAMBUT JENIS KAYUAN DENGAN MEMANFAATKAN KARAKTERISTIK PANAS YANG DITIMBULKANNYA Gilang Bagaskara; Rahyul Amri; Yusnita Rahayu
SINERGI Vol 21, No 3 (2017)
Publisher : Universitas Mercu Buana

Kebakaran lahan gambut yang sudah meluas menimbulkan bencana asap dan penyakit pada masyarakat. Pemantauan kebakaran lahan gambut yang memiliki tingkat akurasi tertinggi adalah ASEAN Specialized Meteorological Center (ASMC) dengan tingkat akurasi sebesar 60%. Dibutuhkan perancangan pendeteksi kebakaran lahan gambut, guna untuk mitigasi bencana kebakaran lahan gambut. Karena gambut yang ada di provinsi Riau umumnya adalah gambut jenis kayuan, jadi penelitian dilakukan pada gambut kayuan. Beberapa metode pengambilan data pada penelitian ini yaitu: uji laboratorium, pengambilan data di lahan gambut kondisi normal, pengambilan data di lahan gambut saat kejadian kebakaran dan pemetaan simpul. Berdasarkan hasil penelitian ini, sensor suhu LM35 memiliki tingkat akurasi dengan persen error rata-rata sebesar 0,22%. Suhu lahan gambut kayuan saat kondisi normal memiliki besar suhu yang selalu berada di bawah suhu udara sekitar. Saat kondisi terbakar besar, suhu lahan gambut kayuan terus meningkat dan melebihi besar suhu udara sekitar. Suhu udara sekitar saat kondisi normal atau saat terjadi kebakaran tidak ada perbedaan yang mencolok, karena kebakaran lahan gambut kayuan tidak begitu bergemuruh perubahan suhu udara sekitar. Radius sensor suhu LM35 pada alat pendeteksi kebakaran lahan gambut mencapai 4 m dengan lama waktu pembacaan 45 menit.

Design and development of smart lock system based QR-Code for library's locker at Faculty of Engineering, Universitas Riau Yusnita Rahayu; Luthfi Afif; Ping Jack Soh
SINERGI Vol 26, No 3 (2022)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2022.3.013

A security system is needed to prevent theft or other criminal acts. One of the implementations of a popular security system today is the Smart Lock System. This study discusses the design of an intelligent lock system using QR Code scanning as a locker key at the Library of the Faculty of Engineering, Universitas Riau. The design of the device system consists of one piece of ESP8266 Node MCU module, one piece of 12V Power Switch Adapter, one piece of AMS 1117 module with 3.3V and 5V output voltages, three pieces of 5V Relays, three pieces of 12V Solenoids. The security system has been improved compared with existing security systems, such as verification for personal data, email notification, and level login to get theft to treat notification. This paper also measured the delay of the device system. Based on measurement results, the average delay obtained is 1.66 seconds.

Dual-band frequency reconfigurable 5G microstrip antenna Yusnita Rahayu; Yoga Bayu Pradana; Yoshihide Yamada
SINERGI Vol 27, No 1 (2023)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2023.1.010

Microstrip Antenna is widely developed and used in modern telecommunications equipment because of its advantages. Microstrip antenna is also used in 5G development which is expected to increase communication capacity and also be able to provide very large data rates. The frequency used in 5G is 28, 38, and 78 GHz. However, the 5G network with high frequency has a weakness: transmitted waves are vulnerable to weather because of their dense waveform. Therefore, the multiband is used to support different frequencies in one antenna. Furthermore, antenna reconfiguration is used to set the antenna to work on a different frequency and adjust different radiation patterns depending on the needs without changing the form of the antenna. This paper proposes the dual-band frequency reconfigurable antenna with RT Duroid 5880 as its substrate using PIN diodes placed between the main patch and secondary patch element and simulated on CST software for 28 GHz and 38 GHz with two conditions, ON and OFF. Both simulated and measured results show that the antenna can work well as intended. During the OFF condition, the antenna only works at 38 GHz, while in the ON condition, the antenna works at 28 GHz and 38 GHz, respectively.

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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