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All Journal International Journal of Electrical and Computer Engineering Techno.Com: Jurnal Teknologi Informasi TELKOMNIKA (Telecommunication Computing Electronics and Control) SITEKIN: Jurnal Sains, Teknologi dan Industri Seminar Nasional Teknologi Informasi Komunikasi dan Industri INTECOMS: Journal of Information Technology and Computer Science JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Jurnal Abdi Insani Aiti: Jurnal Teknologi Informasi Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering)
Teddy Purnamirza
Jurusan Teknik Elektro Universitas Islam Negeri Sultan Syarif Kasim Riau
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Influence analysis of director’s elements on the circular Yagi disc antenna performance at 1.8 GHz Shamsudin, Mustaqim Hakimi; Ibrahim, Imran Mohd; Al-Gburi, Ahmed Jamal Abdullah; Purnamirza, Teddy
International Journal of Electrical and Computer Engineering (IJECE) Vol 13, No 6: December 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v13i6.pp6426-6434

Abstract

This paper aims to investigate and design a Yagi disc antenna with a variable number of director elements for Band 3 in fourth-generation long term evolution (4G LTE) mobile applications. The array technique was introduced by increasing the number of director elements to achieve superior results and better performance, such as higher gain and lower return loss. Initially, the simulated results of return loss and gain with one director element were -19.02 dB and 8.51 dBi, respectively. Then, by increasing the number of directors to three and five elements, the antenna’s performance improved significantly from -32.44 to -42.68 dB for return loss and from 8.51 to 11.17 dBi for gain, respectively. The simulated circular Yagi disc antenna provided a response in the range of 1.78 to 1.82 GHz. Therefore, a model was fabricated and tested to validate the antenna design. The measured results matched well with the simulated ones. By increasing the number of director elements, the measurement results of gain and return loss at a frequency of 1.8 GHz also showed improvement from 7.70 to 11.09 dBi and from -27.31 to -32.91 dB, respectively. Meanwhile, the measured antenna provided a wider bandwidth in the range of 1.72-1.82 GHz.
Analisis performansi dan optimasi jaringan 4G LTE di Kecamatan Kelayang Suprianto, Dedek; Mulyono, Mulyono; Susanti, Rika; Purnamirza, Teddy
AITI Vol 22 No 1 (2025)
Publisher : Fakultas Teknologi Informasi Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/aiti.v22i1.15-28

Abstract

LTE menyediakan kecepatan data hingga 100 Mbps pada downlink dan hingga 50 Mbps pada uplink. Kecamatan Kelayang merupakan salah satu tempat yang memiliki banyak pengguna LTE, karena lokasinya yang padat penduduk, khususnya di kawasan Peranap dan Bongkal Malang. Berdasarkan hasil drive test, ditemukanlah permasalahan yaitu mutu throughput, RSRP serta SINR yang kondisinya sangat kurang baik. Oleh karena itu, dilakukan simulasi optimasi menggunakan metode electrical tilt. Hasil throughput pada SITE_PERANAP_4G dan SITE_BONGKAL_MALANG 4G setelah optimasi meningkat menjadi 49.000 kbps. Hasil parameter RSRP pada SITE_PERANAP_4G dan SITE_BONGKAL_MALANG 4G setelah optimasi meningkat menjadi >= -70 dBm. Hasil parameter SINR pada SITE_PERANAP_4G dari nilai -20 dB meningkat menjadi 30 dB setelah optimasi. Sementara itu, pada SITE_BONGKAL_MALANG 4G dari nilai -20 dB meningkat menjadi 20 dB setelah optimasi.
Optimization of 4G LTE Network with Automatic Cell Planning and Carrier Aggregation Methods Sutoyo Sutoyo; Teddy Purnamirza; Mulyono Mulyono; Ahmad Faizal
Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Vol 11 No 1 (2024): Jurnal Ecotipe, April 2024
Publisher : Jurusan Teknik Elektro, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jurnalecotipe.v11i1.4143

Abstract

The implementation of 4G LTE in Indonesia still faces numerous challenges, particularly in terms of coverage areas that are less than optimal, causing many areas to be classified as bad spots. One of them is Koto Baru Payobasung area, Payakumbuh. Network optimization is one method for overcoming this problem. In this study, we will use optimization techniques such as Automatic Cell Planning (ACP) and Carrier Aggregation (CA) with RSRP, SINR, and Throughput parameters. Through existing simulations, the results of the initial research revealed that two of the three parameters, namely RSRP and Throughput, were classified as very bad conditions. Based on the results of optimization using the ACP technique, it was discovered that there was an increase in the RSRP value of = -103 dBm, SINR of = 2 dB, and Throughput = 15 mbps. The RSRP value for the CA technique is -90 dBm, the SINR is 7 dB, and the throughput is 50 mbps. Because of the value of the optimization parameter results, the CA technique is more effective than the ACP technique in these two optimization techniques
SOSIALISASI PELATIHAN KREASI MELIPAT KERTAS “MENARA TIKONIK” PADA MATA KULIAH ALJABAR LINEAR: PENDAMPINGAN DOSEN-MAHASISWA DI UIN SUSKA RIAU Depriwana Rahmi; Annisah Kurniati; Suci Yuniati; Teddy Purnamirza
Jurnal Abdi Insani Vol 13 No 5 (2026): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v13i5.3064

Abstract

Dalam pembelajaran di kelas, agar pembelajaran dapat berjalan efektif maka seharusnya diberikan suatu permainan edukatif yang dapat merangsang dan memotivasi mahasiswa dalam belajar. Permainan juga dapat mengatasi kejenuhan mahasiswa dalam belajar dan meningkatkan Kerjasama antara dosen dan mahasiswa dalam pembelajaran. Dengan demikian tim pengabdi bertujuan untuk melakukan pendampingan kepada dosen dan mahasiswa dalam membuat suatu permainan edukatif yang baru berupa pembuatan menara berbahan dasar kertas dengan ukuran yang sama dengan kategori menara harus tinggi, kokoh, dan berbentuk unik. Pendampingan ini diikuti oleh tiga dosen pengampu mata kuliah aljabar linier dan 49 mahasiswa. Kegiatan pendampingan tersebut terdapat beberapa langkah yaitu melakukan wawancara kepada dosen pengampu mata kuliah aljabar linear, memberikan referensi kepada dosen dan mahasiswa, merancang permainan kreasi melipat kertas, melakukan koordinasi dengan dosen mengenai kegiatan pendampingan, dan melaksanakan kegiatan pengabdian. Adapun metode yang digunakan pengabdi dalam kegiatan ini yaitu metode diskusi, metode praktek, metode presentasi, melakukan evaluasi, dan refleksi. Pembuatan Menara dengan ketentuan jumlah kertas yang digunakan 10 kertas buat setinggi mungkin, kokoh (bisa dipindah-pindah), desain yang unik dengan durasi 150 menit, kemudian mempresentasikan menara yang telah dibuat dengan menjelaskan filosofi dan hubungan dengana aljabar linear. Hasil pendampingan menunjukan bahwa berdasarkan observasi 98% mahasiswa sangat antusias dan termotivasi dalam membuat menara tikonik, dalam berdiskusi mengenai menara apa yang akan dibuat, semuanya mengeluarkan ide-ide dan semua mahasiswa bekerja dan tidak ada yang diam, hal ini terbukti dengan karya-karya yang dihasilkan oleh mahasiswa sangat bagus dengan kreasi tiap kelompok berbeda-beda dan unik dan wawancara juga menunjukan mahasiswa dan dosen sangat senang jika permainan ini dilakukan karena bahan pembuatannya sangat mudah diperoleh dan waktu pelaksanaannya juga fleksibel. Dengan demikian, kegiatan ini diharapkan dapat menciptakan pengalaman positif di awal perkuliahan dan meningkatkan kerjasama antara dosen dan mahasiswa dalam pembelajaran berikutnya.
End-fire multibeam radial line slot array antennas Teddy Purnamirza; Junisbekov M. Shardarbekovich; Riza Adi Jaya; Imran Mohd Ibrahim; Kabanbayev A. Batyrbekovich; Depriwana Rahmi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 22, No 4: August 2024
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v22i4.25883

Abstract

This research proposed and verified a novel method in realizing end-fire radial line slot array (RLSA) antennas. This method involved the use of high beamsquint values in the design of slot pairs, which aimed to shift the antenna’s beam toward the end-fire direction. Furthermore, identical slot pairs were also placed in the antenna’s background to further squint the beam in the end-fire direction. By using this method, forty multibeam end-fire RLSA antennas were modeled and simulated to determine the most efficient model to be fabricated. The accuracy of the simulations was confirmed through measurements taken from the fabricated prototype, which demonstrate good agreement with the simulation results and confirm the validity of the proposed method. The result showed that it is possible to design four end-fire beam antennas with a gain of 8 dBi, directions of 0°, 90°, 180°, and 270° in the azimuth direction, and a beamwidth of about 20°. The antenna also showed low reflection and bandwidth of about 500 MHz, which is suitable for Wi-Fi applications.
Co-Authors - Mulyono - Sutoyo Ahmad Faizal Al-Gburi, Ahmed Jamal Abdullah Annisah Kurniati Depriwana Rahmi Fitri Amillia Halim Mudia Hasdi Radiles Ibrahim, Imran Mohd Ilham Arifin Imran M. Bin Ibrahim Imran Mohd Ibrahim Junisbekov M. Shardarbekovich Kabanbayev A. Batyrbekovich Muhammad Fachrul Afiansyah Muhammad Ralibi Mulyono Mulyono Mulyono Mulyono Mulyono Mulyono Mulyono Mulyono Mulyono Mulyono Prayoga Budikesuma Rifki Aulia Rika Susanti Rika Susanti Rika Susanti Rika Susanti Rika Susanti Rivaldo Sanofta Ilham Riza Adi Jaya Rizki Aulia Safrizal Hasbi Shamsudin, Mustaqim Hakimi Suci Yuniati Suprianto, Dedek Sutoyo Sutoyo Sutoyo Sutoyo Sutoyo Sutoyo Yogi Ismemet Yuhrijul Yuhrijul