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All Journal Journal of Science and Applicative Technology Electrician : Jurnal Rekayasa dan Teknologi Elektro TeknoKreatif: Jurnal Pengabdian kepada Masyarakat
Novalia Pertiwi
Department Of Telecommunication Engineering, Institut Teknologi Sumatera, Lampung, Indonesia
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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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.
Manajemen Interferensi Femtocell Menggunakan Metode Fractional Frequency Reuse (FFR) pada Jaringan Ultra-Dense Network (UDN) dengan Sektorisasi Macrocell Sitronella Nurfitriani Hasim; Novalia Pertiwi; Adinda Azzahra; Anggrit Dewangkara Yudha Pinangkis; Soraida Sabella; Muhammad Rizky Hikmatullah; Aji Pamungkas Tri Nurcahyo
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 20 No. 1 (2026)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v20n1.3022

Abstract

The development of 5G technology with the implementation of Ultra Dense Network (UDN) has brought new demands in interference management and frequency spectrum allocation. The main challenge faced is the high level of inter-cell interference, especially between macrocells and femtocells in highly dense network environments. This study applies the Fractional Frequency Reuse (FFR) method for interference management in downlink femtocell networks, allocating 4 sub-frequencies to 3 sectors in the cell edge area and 1 sector in the cell center. The probability of SINR below 15 dB successfully decreased from 100% to 0%, throughput below 100 Mbps dropped from 100% to 0%, while BER above 0.01 decreased from 100% to 0%, with a minimum value reaching 10⁻¹³. The optimal performance of this sector is supported by the implementation of a method that eliminates cross-tier interference. SINR values are directly proportional to throughput and inversely proportional to BER.
Pelatihan Perakitan Robot Omni-Directional Kepada Guru SMAN 5 Bandar Lampung untuk Meningkatkan Kemampuan Sains dan Teknologi dalam Pembelajaran Sabar Sabar; kisna Pertiwi; joni joni; Muhammad Habib ALgifari; Novalia Pertiwi; Fajar Perdana Nurullah
TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Vol 4 No 1 (2024): TEKNOKREATIF : Jurnal Pengabdian kepada Masyarakat Volume 4 No 1
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M), Institut Teknologi Sumatera, Lampung, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/teknokreatif.v4i1.1659

Abstract

Pengabdian masyarakat ini bertujuan untuk mengenalkan dan menerapkan teknologi robot omni-directional yakni robot yang mampu bergerak ke segala arah dan dapat dikontrol secara nirkabel. Adapun hasil analisis evaluasi kognitif peserta pelatihan telah menunjukkan bahwa terjadi peningkatan sebesar sebesar 26 poin pengetahuan peserta di bidang pelatihan perakitan robot, yang semula 59 menjadi 85. Selanjutnya untuk nilai modus pada postest dapat dilihat peserta pelatihan mendapatkan nilai 80 yang berarti jumlah peserta yang paham dan mengerti setelah pelatihan meningkat signifikan. Tujuan perakitan robot omni-directional untuk menunjang para pendidik SMAN 5 Bandar Lampung yang lebih kompeten dan visioner dalam media pembelajaran
Co-Authors Adinda Azzahra Aji Pamungkas Tri Nurcahyo Algifari, Muhammad Habib Anggrit Dewangkara Yudha Pinangkis Fajar Perdana Nurullah Fannush Shofi Akbar Gamantyo Hendrantoro Joni Joni Kisna Pertiwi Muhammad Rizky Hikmatullah Sabar Setijadi, Eko Sitronella Nurfitriani Hasim Soraida Sabella