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All Journal Tekno : Jurnal Teknologi Elektro dan Kejuruan Jurnal Jurusan Pendidikan Teknik Elektro JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING JTERA (Jurnal Teknologi Rekayasa) Techne : Jurnal Ilmiah Elektroteknika Dinamisia: Jurnal Pengabdian Kepada Masyarakat Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Pengabdian Masyarakat IPTEKS Jurnal Pengabdian Masyarakat Teknik Reswara: Jurnal Pengabdian Kepada Masyarakat JURNAL TEKNIK INDUSTRI Jurnal Rekayasa elektrika Jurnal INFOTEL
Lydia Sari
Universitas Trisakti
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Training on Making a Water Speed ​​Detection Tool in Culverts for Early Detection of Flood Disasters in Tanjung Duren Village, DKI Jakarta Syah Alam; Indra Surjati; Lydia Sari; Iwan Purwanto; Farras Hamidah; Samuel Netazi; Tri swasono adi
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 2 (2023): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v7i2.12345

Abstract

In early 2020, the Greater Jakarta area experienced severe flooding in several areas, one of which was the North Tanjung Duren Village, Grogol Petamburan District, West Jakarta. Based on BMKG data in February 2020, the Tanjung Duren Utara Urban Village area is a flood-prone area with a height of 10-30 cm and is also a densely populated settlement so that it is prone to short circuit hazards that can cause fires. One of the causes of flooding is water channels / culverts that do not flow smoothly. This activity proposes the creation of a water velocity detection device that functions as an early detection of flood disasters. The detection device is designed using a microcontroller and is connected to a sensor for detecting the speed of water flowing from the drain pipe in the culvert. Based on the results of the training provided, the community's improvement in early detection of flood disasters has increased as indicated by an increase in the post-test value of 52% compared to the pre-test value. This activity is very useful for flood-prone areas as an early detection approach.
Miniaturisasi Antena Mikrostrip Pencatu Ganda Menggunakan Metode Peripheral Slit Syah Alam; Lydia Sari; Indra Surjati; Newton Onasie
Jurnal Rekayasa Elektrika Vol 17, No 1 (2021)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (992.416 KB) | DOI: 10.17529/jre.v17i1.17717

Abstract

This research proposes a dual-feed microstrip antenna using a peripheral slit for mobile communication systems. Miniaturization and reduction of the dual feed microstrip antenna’s size have been investigated and explained in this paper. The proposed antenna dimensions are reduced using three pairs of slits while the resonant frequency is 1800 MHz. Based on simulation and optimization results, the proposed antenna dimensions can be reduced by 94.81% compared to conventional multiple feed channel microstrip antennas. These results indicate that the peripheral slits technique has succeeded in reducing the proposed antenna dimensions without changing its frequency. We get a reflection coefficient of -31.65 dB, VSWR of 1,053 at a frequency of 1.95 GHz, and bandwidth of 206 MHz with a frequency range from the measurement process of 1.85 GHz–2.06 GHz with a bandwidth of 210 MHz. Impedance obtained from the proposed antenna is 47.72 ± j0.67 Ω at frequency 1.95 GHz. 
Performance Analysis of CRC-Polar Concatenated Codes Lydia Sari; Masagus M. Ikhsan Assiddiq U.P.; Syah Alam; Indra Surjati
JURNAL INFOTEL Vol 12 No 4 (2020): November 2020
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v12i4.494

Abstract

Polar code has been proven to obtain Shannon capacity for Binary Input Discrete Memoryless Channel (BIDMC) and its use has been proposed as the channel coding in 5G technology. However, its performance is limited in finite block length, compared to Turbo or LDPC codes. This research proposes the use of various CRC codes to complement Polar codes with finite block length and analyses the performance based on Block Error Rate (BLER) to Es/N0 (dB). The CRC codes used are of degrees 11 and 24, with 3 different polynomial generators for each degree. The number of bits in the information sequence is 32. The list sizes used are 1, 2, 4, and 8. Simulation results show that the concatenation of CRC and Polar codes will yield good BLER vs Es/N0 performance for short blocks of codeword, with rates 32/864 and 54/864. Concatenating CRC codes with Polar codes will yield a BLER performance of 10-2 with Es/N0 values of -9.1 to -7.5 dB when CRC codes of degree 11 is used, depending on the SC list used. The use of CRC codes of degree 24 enables a BLER performance of 10-2 with Es/N0 values of -7 to -6 dB when the SC list used is 1 or 2. The use of CRC codes of degree 24 combined with SC list with sizes 4 or 8 will improve the BLER performance to 10-2 with Es/N0 values of -8 to -7.5 dB
Miniaturisasi Antena Mikrostrip Pencatu Ganda Menggunakan Metode Peripheral Slit Syah Alam; Lydia Sari; Indra Surjati; Newton Onasie
Jurnal Rekayasa Elektrika Vol 17, No 1 (2021)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v17i1.17717

Abstract

This research proposes a dual-feed microstrip antenna using a peripheral slit for mobile communication systems. Miniaturization and reduction of the dual feed microstrip antenna’s size have been investigated and explained in this paper. The proposed antenna dimensions are reduced using three pairs of slits while the resonant frequency is 1800 MHz. Based on simulation and optimization results, the proposed antenna dimensions can be reduced by 94.81% compared to conventional multiple feed channel microstrip antennas. These results indicate that the peripheral slits technique has succeeded in reducing the proposed antenna dimensions without changing its frequency. We get a reflection coefficient of -31.65 dB, VSWR of 1,053 at a frequency of 1.95 GHz, and bandwidth of 206 MHz with a frequency range from the measurement process of 1.85 GHz–2.06 GHz with a bandwidth of 210 MHz. Impedance obtained from the proposed antenna is 47.72 ± j0.67 Ω at frequency 1.95 GHz. 
PELATIHAN PEMBUATAN ALAT DETEKSI DINI BENCANA BANJIR UNTUK DI WILAYAH JATIBENING, BEKASI Syah Alam; Indra Surjati; Lydia Sari; Yuli Kurnia Ningsih; Pudji Astuti; Simon Jansen Saragi; Muhammad Ilham
RESWARA: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 1 (2024)
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/rjpkm.v5i1.3405

Abstract

Banjir adalah bencana alam yang sering terjadi di wilayah Jakarta dan sekitarnya. Salah satu permasalahan yang menyebabkan bencana banjir adalah adanya sumbatan pada saluran air yang menyebabkan air meluap dan menimbulkan genangan. Kegiatan pengabdian kepada masyarakat ini memberikan solusi dengan memberilkan kegiatan pelatihan pembuatan deteksi dini bencana banjir menggunakan deteksi ketinggian air yang diletakkan pada saluran pembuangan air di wilayah Perumahan Jatibening, Bekasi yang mengalami bencana banji diawal tahun 2021. Alat yang dirancang menerapkan teknologi tepat guna dengan memanfaatkan pelampung water level control yang dikoneksikan dengan power supply dan relay sebagai sakelar otomatis. Informasi ketinggian air direpresentasikan menggunakan indicator lampu LED dan jika air sudah meluap maka sirine akan berbunyi untuk memberikan informasi kepada warga sekitar agar dapat segera mengevakuasi barang-barang berharga dan lainnya. Hasil dari kegiatan ini didapatkan bahwa pemahaman masyarakat terhadap deteksi bencana banjir meningkat menjadi 98% dan alat deteksi ketinggian air berhasil diterapkan dan ditempatkan di saluran pembuangan air di wilayah perumahan jatibening, bekasi.
Co-Authors Agam Yudi Putranto Amal Witonohadi Aulia Anindya Dhanyswari Chairul Rizki Daisman Aji Daisman P.B. Aji Daisman Purnomo Bayyu Aji Dian Mardi Safitri Dwindary Annisah Fahrul Solehudin Farras Hamidah Fitriana, Rina Galang Trihantoro Gunawan Tjahjadi Indra Surjati Iwan Purwanto Kurnia Ningsih, Yuli Masagus M. Ikhsan Assiddiq U.P. Muhammad Ilham Newton Onasie Permana Andi Paristiawan Pudji Astuti Raden Deiny Mardian Ratna Mira Yojana Ricky Harbu Orbia Rina Fitriana Rizka Shafira Samuel Netazi Sandi Purwiro Raharjo Putro Sentot Novianto Simon Jansen Saragi Syah Alam Syah Alam Tri swasono adi Yunia Ningsih Zikra Aulia Sanaz