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Wideband Metamaterial Absorber Based on Combination of Unit Cells Puji Handayani; Eko Setijadi; Muhammad Rendy Anggara; Gamantyo Hendrantoro; Ahmad Maulidiyanto
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 4, No 2 (2020): October
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v4.i2.135

Abstract

Metamaterial absorber is an electromagnetic wave absorber made from metamaterial. It basically works in narrow band frequency as it is designed in a particular shape that related to its resonance frequency. However, some applications, e.g., anechoic chamber, require metamaterial absorber that can work in a wide frequency band. This paper discussed the design of wide band metamaterial absorber using the combination of multiple unit cells. The unit cells type was split ring resonator (SRR). SRR had advantages in terms of its simple shape, it could have more than one resonant frequencies depending on the number of its ring, and its shape could be modified easily to obtain the desired resonant frequencies. We designed metamaterial absorber having good absorbtion rate in 2-10 GHz frequency band. To cover this wide frequency band, we used five unit cells which were arranged on a flat plane. Each unit cell had several resonant frequencies. The design was carried out using simulation software of CST (Computer Simulation System). The fabricated design was measured and the results shown that it had an absorbtion rate of 99% in the measured frequency band.Keywords:  absorption rate, metamaterial absorber, unit cell.
Implementasi Internet of Things Dalam Mengontrol dan Memonitor Ketinggian Air Alamsyah Zakaria; Abd. Rahman Sholeh; Hajra Rasmita Ngemba; Eko Setijadi
Techno.Com Vol 21, No 4 (2022): November 2022
Publisher : LPPM Universitas Dian Nuswantoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33633/tc.v21i4.6619

Abstract

Peningkatan kualitas suatu alat dibidang industri sangat diperlukan dalam menilai keakuratan dan efisiensi suatu produk. Salah satu bidang industri yang membutuhkan sistem pengontrolan dan monitoring adalah tempat penampungan air. Sistem ini sangat diperlukan untuk mengetahui kondisi ketinggian air. Umumnya pengguna dalam melakukan pengisian dan pemantauan air hanya memanfaatkan mesin pompa yang dikendalikan secara manual. Permasalahan tersebut membutuhkan waktu yang lama, terjadi pemborosan daya listrik, air, dan dapat menimbulkan korsleting listrik yang disebabkan oleh air meluap dari penampungan. Untuk meningkatkan keamanan dan efisiensi waktu diperlukan suatu rancangan teknologi yang dapat mengontrol dan memonitor ketinggian air secara realtime. Modul yang digunakan dalam mengontrol batas maksimal ketinggian air menggunakan arduino uno. Sedangkan untuk memonitor kondisi ketinggian air menggunakan modul ESP32. Penelitian ini bertujuan untuk membantu pengguna dalam mengontrol dan memonitor kondisi ketinggian air melalui smartphone. Rancangan ini dapat meminimalisir terjadinya pemborosan air, daya listrik, dan kebakaran. Hasil penelitian menunjukkan bahwa rancangan bekerja dengan optimal dengan tingkat akurasi 98,96% 
Linear Array Thinning with Cavity backed U-slot Patch Antenna using Genetic Algorithm Novalia Pertiwi; Fannush Shofi Akbar; Eko Setijadi; Gamantyo Hendrantoro
Journal of Science and Applicative Technology Vol 5 No 1 (2021): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i1.386

Abstract

In this paper, a thinned linear array with Cavity backed U-slot Patch has been investigated using the Genetic Algorithm to minimize peak sidelobe level and the number of antenna elements. One of the essential steps in the Genetic Algorithm method is a crossover, which uses the Paired Top Ten and Combined Top Five rules applied to the Cavity backed U-slot Patch antenna. The peak sidelobe level value is -18.63 dB with a array filling of 63.33% at the broadside angle using Combined Top Five rules. In Paired Top Ten, the peak sidelobe level value is -19.48 dB with a array filling of 70%. The two methods are still better as compared to a dense array. This study is essential in the development of radar technologies since it needs a low sidelobe level.
Subarray 4×4 untuk Antena MIMO 5G dengan Elemen yang Menerapkan Teknik Parasitic Fitri Amillia; Eko Setijadi; Gamantyo Hendrantoro
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 12 No 1: Februari 2023
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jnteti.v12i1.5310

Abstract

Multiple-input multiple-output (MIMO) is a wireless communication system using multiple antennas on the transmitting and receiving sides. This system can improve the quality of wireless communication on 5G technology networks. The advantages of 5G include higher data rates and lower delays. The 5G network in Indonesia uses an intermediate frequency working in the 3.5 GHz frequency band. Antenna is an important device in a wireless network MIMO system. Therefore, this study proposes a single element design using parasitic techniques to widen the bandwidth to meet the needs of MIMO antennas and design a 4×4 subarray antenna for 5G MIMO. The method used began with determining the target antenna specifications, then designing a single element with a parasitic patch. The use of parasitic patches techniques on antenna elements aims to widen the bandwidth to meet target specifications. The resonant frequency of the microstrip antenna was affected by the increase in the number of parasitic patches. The number of resonant frequencies that arise resulted in a broad bandwidth. Then, the single elements with parasitic patches were arranged into a 4x4 subarray. All elements were arranged on the same substrate with a spacing between elements from one feed point to another was 64.28 mm or 0.75λ. The subarray design met the target antenna specifications if the subarray elements have a fractional bandwidth of more than 20% and mutual coupling of less than -20 dB. The material used in antenna design and fabrication was FR-4 (epoxy) substrate with a dielectric constant (ε_r) of 4.3 and a substrate thickness (h) of 1.6 mm. The results showed a bandwidth of 735 MHz or a fractional bandwidth of 20.35%, return loss of -14.65 dB, mutual coupling of -30.05 dB, and gain of 16.86 dB. Thus, the designed 4x4 subarray for MIMO antenna meets the desired specifications.
Pengukuran Tingkat Kesiapan daan Pengembangan Model Kota Cerdas (Smart City) Kabupaten Pamekasan Eko Setijadi; Ronny Mardiyanto; Aang Kisnu Darmawan; Hoiriyah; Iwan Santosa
Sewagati Vol 4 No 2 (2020)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (820.614 KB)

Abstract

Konsep kota cerdas (smart city) saat ini merupakan sebuah trend dan pilihan utama untuk pengolaan kota berbasis TIK yang terintegrasi. Konsep kota cerdas diharapkan menjadi solusi dari permasalan kota yang semakin kompleks dan multi dimensi. Tahun 2018, pemerintah Indonesia telah memulai Gerakan menuju 50 smart city, sebagai inisiasi untuk menyiapkan berbagai kota menjadi sebuah kota cerdas. Kabupaten Pamekasan telah memulai berbagai inisiasi untuk menjadi sebuah kota cerdas. Akan tetapi terdapat berbagai masalah dan kendala dalam hal penyiapan Masterplan, koordinasi antar stakeholder, penyiapan infrastruktur, teknostruktur, dan suprastruktur TIK. Program Abdimas berbasis penelitian ini bertujuan untuk melakukan kajian, pengukuran kesiapan dan pengembangan model kota cerdas di kabupaten Pamekasan. Pada program ini kegiatan ini di fokuskan pada pengukuran kesiapan dan koordinasi antar stakeholder smart city, yaitu pemerintah, masyarakat, sektor swasta/UKM dan sektor pendidikan yang terdampak pembangunan kota cerdas di kabupaten Pamekasan. Metode yang digunakan dalam kegiatan abdimas berbasis penelitian ini adalah Kajian kesiapan kota cerdas, sosialisasi, forum group discussion, kajian pengembangan masterplan/kerangka kerja kota cerdas dan kooordinasi antar dinas serta stake holder smart city. Hasil yang didapat dari kegiatan ini adalah analisis tingkat kesiapan kota cerdas kabupaten pamekasan dan peningkatan koordinasi antar stakeholder smart city kabupaten pamekasan. Kegiatan ini diharapkan bisa memberikan konstribusi dalam proses pembangunan smart city kabupaten pamekasan.
Implementasi Workshop Penyegaran Bagi Dosen dan Sarjana Bidang Telekomunikasi di Luar Jawa dan Indonesia Timur dengan Kombinasi Metode Daring Sinkron dan Asinkron Gamantyo Hendrantoro; Prasetiyono H Mukti; Devy Kuswidiastuti; Puji Handayani; Achmad Mauludiyanto; Sri Rahayu; Eko Setijadi
Sewagati Vol 4 No 3 (2020)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.864 KB)

Abstract

Keterbatasan prasarana telekomunikasi dan informasi menyulitkan para dosen dan sarjana teknik yang berkarya di wilayah Indonesia timur dalam mengakses buku, jurnal, serta informasi ilmiah untuk menjaga penguasaan keilmuan dan mengikuti perkembangan teknologi di bidangnya, sesuai dengan hasil survey awal kami. Sebagai solusi, kami melaksanakan penyegaran dan peningkatan kapasitas sarjana secara daring dengan berfokus pada sarjana Teknik Elektro bidang Telekomunikasi. Pelaksanaan secara daring memungkinkan untuk menjangkau wilayah geografis yang luas di Indonesia timur. Materi yang disampaikan meliputi materi dasar, perkembangan teknologi terbaru, dan regulasi telekomunikasi, sesuai umpan balik para responden. Setiap minggu selama 13 minggu dilaksanakan workshop daring sinkron menggunakan Zoom dan Live Youtube dengan tes pasca-workshop berbasis Kahoot. Rekaman video workshop di Youtube dapat diputar oleh peserta yang tidak dapat hadir langsung, sedangkan diskusi dilanjutkan secara asinkron melalui grup Whatsapp. Survey akhir menunjukkan besarnya animo peserta, peningkatan pemahaman materi, dan apresiasi peserta terhadap inisiatif ini. Apresiasi khusus diberikan oleh peserta yang memiliki keterbatasan akses internet sehingga sulit mengikuti workshop secara sinkron, tetapi masih dapat mengikuti workshop dan diskusi secara asinkron. Tim pengabdi mengharapkan metode serupa dapat diterapkan dalam kegiatan penyegaran dan pelatihan di bidang yang lain bagi para dosen dan sarjana yang berkarya di luar Jawa dan khususnya Indonesia Timur.
Analisis Kinerja Protokol Routing AODV, DSR, dan OLSR pada Mobile Ad hoc Network Berdasarkan Parameter Quality of Service Alamsyah Zakaria; Eko Setijadi; I Ketut Eddy Purnama; Mauridhi Hery Purnomo
Jurnal Rekayasa Elektrika Vol 14, No 3 (2018)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (677.15 KB) | DOI: 10.17529/jre.v14i3.9798

Abstract

MANET is autonomous, self-configured, and applicable to emergency locations such as forest fires, earthquakes, floods, and health monitoring. However, challenges and difficulties faced by the mobile ad-hoc network (MANET) is a dynamically built network system, without the support of infrastructure in communicating between one node and other nodes, and limited energy sources. To overcome MANET problems and to obtain optimal network quality, the selections of routing protocols and quality of service (QoS) are significant in MANET design. This study aims to analyze the performance of routing protocols: dynamic source routing (DSR), ad-hoc on demand distance vector (AODV) and optimized link state routing (OLSR) based on QoS. The analyzed QoS parameters include packet delivery ratio (PDR), packet loss, throughput, and delay. Simulation results using network simulator version based on the number of node densities indicate that OLSR has better performance compared to AODV and DSR regarding PDR, packet loss, throughput, and delay.
Analisis Kinerja Protokol Routing Reaktif dan Proaktif pada MANET Menggunakan NS2 Alamsyah; Eko Setijadi; I Ketut Eddy Purnama; Mauridhi Hery Purnomo
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 7 No 2: Mei 2018
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (927.423 KB)

Abstract

The development of mobile ad-hoc network (MANET) is becoming popular and interesting to research because it has a fast characteristic, cost-effective deployment, able to manage topology change independently, and can be applied to emergency locations such as forest fire detection, military operation, and health monitoring. However, the problems faced by MANET are dynamic network topology changes, limited energy consumption, and without the support of existing infrastructure. In order to overcome dynamic topology changes and to obtain reliable network quality, then routing protocol selection is critical in designing MANET. This study aims to analyze the performance of AODV, DSR, DSDV, and OLSR routing protocols based on the quality of service (QoS). Scenarios based on the number of vertices, packet size, a broad area of simulation, length of simulation, simulation speed, mobility model, and propagation model. The simulation has been done to produce four graphs, each of which describes the PDR, throughput, packet loss, and delay. The simulation results show that OLSR performs better than DSR, AODV, and DSDV in terms PDR, throughput, packet loss, and delay. OLSR average value in PDR by 39.997%, throughput by 417.383 Kbps, packet loss by 60.003%, and delay of 15.52 milliseconds.
Analisis Kinerja Protokol Routing AODV, DSR, dan OLSR pada Mobile Ad hoc Network Berdasarkan Parameter Quality of Service Alamsyah Zakaria; Eko Setijadi; I Ketut Eddy Purnama; Mauridhi Hery Purnomo
Jurnal Rekayasa Elektrika Vol 14, No 3 (2018)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v14i3.9798

Abstract

MANET is autonomous, self-configured, and applicable to emergency locations such as forest fires, earthquakes, floods, and health monitoring. However, challenges and difficulties faced by the mobile ad-hoc network (MANET) is a dynamically built network system, without the support of infrastructure in communicating between one node and other nodes, and limited energy sources. To overcome MANET problems and to obtain optimal network quality, the selections of routing protocols and quality of service (QoS) are significant in MANET design. This study aims to analyze the performance of routing protocols: dynamic source routing (DSR), ad-hoc on demand distance vector (AODV) and optimized link state routing (OLSR) based on QoS. The analyzed QoS parameters include packet delivery ratio (PDR), packet loss, throughput, and delay. Simulation results using network simulator version based on the number of node densities indicate that OLSR has better performance compared to AODV and DSR regarding PDR, packet loss, throughput, and delay.
Detection of multi-class arrhythmia using heuristic and deep neural network on edge device Arief Kurniawan; Eko Mulyanto Yuniarno; Eko Setijadi; Mochamad Yusuf Alsagaff; Gijsbertus Jacob Verkerke; I Ketut Eddy Purnama
International Journal of Advances in Intelligent Informatics Vol 9, No 3 (2023): November 2023
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijain.v9i3.1061

Abstract

Heart disease is a heart condition that sometimes causes a person to die suddenly. One indication is a rhythm disorder known as arrhythmia. Multi-class Arrhythmia Detection has followed: QRS complex detection procedure and arrhythmia classification based on the QRS complex morphology. We proposed an edge device that detects QRS complexes based on variance analysis (QVAT) and the arrhythmia classification based on the QRS complex spectrogram. The classifier uses two-dimensional convolutional neural network (2D CNN) deep learning. We use a single board computer and neural network compute stick to implement the edge device. The outcomes are a prototype device cardiologists use as a supporting tool for analysing ECG signals, and patients can also use it for self-tests to figure out their heart health. To evaluate the performance of our edge device, we tested using the MIT-BIH database because other methods also use the data. The QVAT sensitivity and predictive positive are 99.81% and 99.90%, respectively. Our classifier's accuracy, sensitivity, predictive positive, specificity, and F1-score are 99.82%, 99.55%, 99.55%, 99.89%, and 99.55%, respectively. The experiment result of arrhythmia classification shows that our method outperforms the others. Still, for r-peak detection, the QVAT implemented in an edge device is comparable to the other methods. In future work, we can improve the performance of r-peak detection using the double-check algorithm in QVAT and cross-check the QRS complex detection by adding 1 class to the classifier, namely the non-QRS class.
Co-Authors Aang Kisnu Darmawan Aang Kisnu Darmawan Abd. Rahman Sholeh Achmad Affandi Achmad Affandi Achmad Mauludiyanto Agriniwaty Paulus Ahmad Khatami Ahmad Maulidiyanto Akbar Hendra Alamsyah Alamsyah - Alan Sujadi Andi Yahya Lubis Arif Hidayat Arifin, Imam Atika Aprilya Boedinoegroho, Hany Daniar Fahmi, Daniar Destina Surya Lestari Devy Kuswidiastuti Dewanda Bima Harikusuma Dewiani Jamaluddin Dika Oktavian Prasetya Dimas Anton Asfani Djoko Suprajitno Rahardjo Dwi Edi Setyawan Eko Mulyanto Yuniarno Elyas Palantei Endang Widjiati Endroyono Endroyono Endroyono, E Evi Rahmawati Evy Nur Amalina Evy Nur Amalina Fahmi, Arif Fannush Shofi Akbar Farida, Fitri Faridatun Nadziroh Fariza, Nadilla Firmansyah, Mohammad Rifqi Fitri Amillia Gamantyo Hendrantoro Gamantyo Hendrantoro gamantyo Hendrantoro Gatot Kusrahardjo Gatot Kusrahardjo Gijsbertus Jacob Verkerke Goran, Petrus Kerowe Hajra Rasmita Ngemba Hamzah, Shipun Anuar Harikusuma, Dewanda Bima Harno Pratomo Heri Suryoatmojo Herti Miawarni Herti Miawarni Herti Miawarni Herti Miawarni Herti Miawarni Herti Miawarni Herti Miawarni, Herti Hoiriyah Hoiriyah, . I Gusti Ngurah Satriyadi Hernanda I Ketut Eddy Purnama I Made Yulistya Negara Idris, Azlina Ilmalik Muhammad Alviendra Imam Arifin Indra Dilianto Intan Sari Areni Irwan Candra Dwinata Ismie Utami Farma Iwan Santosa Iwan Santosa Julia, Aina Kuncoro, Dony Yudy Kurnia Ageng Pratama Kurniawan, Arief Lena Miranti Siahaan M Mahaputra Hidayat Mainsuri Mainsuri Mauridhi Hery Purnomo Merna Baharuddin Mery Subito Mochamad Yusuf Alsagaff Mohamad Hafid Mohamad Hafid, Mohamad Mohammad Ikhlayel Muhammad Hasan Mahmudy Muhammad Nur Alamsyah Muhammad Rendy Anggara Muhammad Rivai Muhammad Sabirin Hadis Muhammad Yahya Batubara Mulyadi Mulyadi Novalia Pertiwi Nugraha, Yurid Eka Nugroho, Jessica Rahmawati Nurfitri Kaharuddin Pasang Arung Padang Permatasari, Prima Dian Prasetiyono H Mukti Prasetiyono Hari Mukti Priska Wina Puji Handayani Putri, K S H Rahayu, Sri Rahmat, M. Basuki Respati Loy Amanda Reza Pradikta Rizal Nur Ibrahim Ronny Mardiyanto, Ronny Rufiyanto, Arief S. Suprapto Sardjono Trihatmo Septiawan, Reza Sirajuddin Sirajuddin SRI RAHAYU Sri Rahayu Sunarno Sunarno Surya Sumpeno Suwadi Suwadi Suwito Suwito Titiek Suryani Tobi Wibialma Natha Tri Arief Sardjono Vickyarnoldo Wantura Vivin Violita Wardi Wardi Widyanto Dwiputra Pradipta Wijayanti . Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Wirawan Yahya Syukri Amrullah Yorisan Permana Baginda Yuning Widiarti