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All Journal Voteteknika (Vocational Teknik Elektronika dan Informatika) Jurnal Teknologi Informasi dan Ilmu Komputer ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika TELEKONTRAN: Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan Jurnal Fokus Elektroda : Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali Buletin Ilmiah Sarjana Teknik Elektro IJITEE (International Journal of Information Technology and Electrical Engineering) Jurnal Abdimas Ilmiah Citra Bakti (JAICB) Fokus Elektroda: Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Mitra Akademia: Jurnal Pengabdian Masyarakat SPEKTRAL : Journal of Communications, Antennas and Propagation Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Shita Fitria Nurjihan
Politeknik Negeri Jakarta
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Physics Social Sciences

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DESAIN ANTENA MIKROSTRIP E-SHAPED PATCH PADA FREKUENSI 5500 MHz UNTUK WIFI Ananda, Fitri Elvira; Nurjihan, Shita Fitria; Rahman, Muhammad Arif
Jurnal Fokus Elektroda : Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Vol 6, No 4 (2021): Jurnal Elektroda Vol 6 No 4
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jfe.v6i4.20272

Abstract

Modifying the shape of the patch microstrip antenna is one way to solve the narrow bandwidth. E-Shaped patch microstrip antenna is obtained by modifying a rectangular patch mikrostrip antenna. The results on this research have succesfully compared the design and simulation antenna parameters between rectangular patch and E-shaped patch. It uses FR-4 as a substrate and works on 5500 MHz frequency for WiFi. The feeding method using a feedline method. The E-shaped patch microstrip antenna has a VSWR value of 1.04 and the antenna return loss is -33.73 dB, better than the rectangular patch. The gain of E-shaped patch is increased by almost 2.5 times and the bandwidth is increased by 10.18% compared to the rectangular patch. The radiation pattern of the two patches has the same directional radiation pattern.
Rancang Bangun Antena Mikrostrip Patch Serangga untuk Aplikasi Monitoring Komposter pada Frekuensi 2,4 GHz Muhammad Faris; Shita Fitria Nurjihan
Spektral Vol. 1 No. 1 (2020): Oktober 2020
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/spektral.v1i1.3435

Abstract

Komposter merupakan alat untuk menampung kompos. Kompos sangat dibutuhkan oleh masyarakat khususnya yang gemar bercocok tanam. Dengan adanya alat monitoring komposter ini memudahkan masyarakat untuk mengecek suhu dan kelembapan dari kompos. Data suhu dan kelembapan dari kompos dikirimkan dari bagian pengirim ke bagian penerima menggunakan sebuah antena mikrostrip dengan bentuk patch serangga. Antena mikrostrip patch serangga bekerja pada frekuensi 2,4 GHz. Antena mikrostrip patch serangga merupakan pengembangan dari patch rectangular, sehingga dalam perhitungannya menggunakan rumus dasar antena patch rectangular. Perancangan dan simulasi antena dilakukan menggunakan software CST Studio Suite 2018. Simulasi dilakukan dengan melakuakn percobaan mengubah dimensi antena sehingga didapatkan hasil parameter yang terbaik. Parameter antena yang diukur adalah Voltage Standing Wave Ratio (VSWR), return loss, gain, dan pola radiasi. Hasil pengukuran parameter antena yang diperoleh yaitu VSWR sebesar 1,0772, return loss sebesar -28,5954 dB, gain sebesar 4,249 dB, dan pola radiasi bidirectional.
Desain Antena Mikrostrip Double Triangular Patch dengan Slot Y untuk Aplikasi Penguat Sinyal 4G pada Frekuensi 1800 MHz Yenniwarti Rafsyam; Alica Dewanti; Shita Fitria Nurjihan
Spektral Vol. 2 No. 1 (2021): April 2021
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/spektral.v2i1.3700

Abstract

Long Term Evolution (LTE) is 4th generation (4G) technology that used as cellular technology. LTE works in various bands, one of band is 1800 MHz. At each location, the signal level that will received by the user varies depending on the usage location. At indoor location, signal level will weaken due to passing the obstacle like trees or walls, so the signal level that the user receivers is less than the maximum. To improve this condition, a repeater is needed. A repeater need an antenna as a signal receiver that transmitted from eNodeB and an antenna for transmitting a signal that has been amplified. In this paper will be explained about design an antenna microstrip double triangular patch with slot Y as an indoor antenna that used for transmitting a signal that works at frequency 1800 MHz. Micostrip antenna that was fabricated and tested has specification value is obtained which are return loss = - 20,702 dB, VSWR = 1,1566, gain = 6,9 dB, and the radiation pattern is unidirectional. Signal level antenna testing is performed on three location by using four provider. The highest signal level gained by Telkomsel provider that is -77 dBm and the lowest is XL provider that is -100,6 dBm.   Keywords : 4G, antenna, frequency 1800 MHz, microstrip, patch double triangular, signal level
Rancang Bangun Filter Bandpass Mikrostrip Pita Sangat Lebar Berbasis Defected Ground Structure Shita Fitria Nurjihan; Achmad Munir
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 9 No 1: Februari 2020
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1238.439 KB) | DOI: 10.22146/jnteti.v9i1.119

Abstract

Along with the rapid development of technology, many techniques have been employed to improve filter performance by using microstrip, one of them is using a Defected Ground Structure (DGS) technique. The DGS is a technique implemented by combining various forms of slot on the ground-plane of filter. This paper presents an ultra wideband (UWB) filter designed using DGS technique by combining two kind of slots on the ground plane, i.e., rectangular slot and rectangular ring slot. The design of composed filter is initialized using filter without DGS, then by adding two kinds of DGS on the ground plane. The DGS is used to improve S-parameter values and increase bandwidth. The method of filter design is using several parametric studies, such as changing the length of patch, width of patch, number of rectangular slot, length of rectangular slot, width of rectangular slot, and gap in rectangular ring slot. This filter is fabricated on a FR4 epoxy dielectric substrate with the thickness of 0.8 mm and the size of 27.4 mm x 22 mm. The measurement result shows that the filter could produce the working bandwidth of 4.01 GHz in the frequency range from 1.52 GHz to 5.53 GHz.
Ultra-Wideband Microstrip Bandpass Filter and Its Equivalent Circuit Shita Fitria Nurjihan; Yenniwarti Rafsyam
IJITEE (International Journal of Information Technology and Electrical Engineering) Vol 5, No 2 (2021): June 2021
Publisher : Department of Electrical Engineering and Information Technology,Faculty of Engineering UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijitee.65695

Abstract

Microstrip filters can be designed with various methods to obtain good performances, such as defected ground structure, open-ended slot, planar edge coupled, and split ring resonator with groundplane windowing. In this paper, the design of an ultra-wideband microstrip bandpass filter used the defected ground structure (DGS) method by adding a circular slot to the groundplane. The addition of the circular slot was carried out to improve the value of S parameter (return loss and insertion loss) from the initial filter design without a circular slot. In the simulation process, optimization was carried out by changing the value of filter component parameters such as patch length and thickness and circular slot width. The simulation results showed that the microstrip bandpass filter could pass frequencies in the range of 1.4 GHz to 5.7 GHz with the bandwidth response of 4.3 GHz. In addition, filter analysis could also be done with an equivalent circuit represented by lumped element components in the form of capacitors and inductors connected in series or parallel. The simulation results of the equivalent circuit had a wider bandwidth, which was able to pass frequencies in the range of 1.2 GHz to 6.1 GHz with a bandwidth response of 4.9 GHz.
Rancang Bangun Sistem Penyiraman dan Perawatan Tanaman Geranium Terintegrasi Telegram Rizki Azka Fihi Aghnia; Annisa Shafira Darmawan; Shita Fitria Nurjihan; Ardina Askum
Spektral Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/spektral.v3i1.4528

Abstract

As a tropical country, Indonesia has a rainy season where there can be mosquito breeding which is quite dangerous for humans. There are several ways to deal with it, one of which is by growing your own geranium plants at home. To make it easier to water these plants, we need a system that can do it even if the planter is not at home. Thus, a system was designed using the Internet of Things (IoT) concept, so that watering plants can be done remotely and water savings can be realized. The system consists of a NodeMCU microcontroller which is connected to the Telegram application as an interface to the user. The three sensors used as input components of the system are the DHT22 sensor to measure the ambient temperature, the soil moisture sensor to measure soil moisture, and the magnetic float sensor to measure the water supply. The output components used are water pumps and servos. The system is powered by a DC power supply with an output voltage of 12 V to power the water pump and 5 V to power the NodeMCU. The results of testing the tool show that the tool works well. The system works when the humidity level is below 80% will automatically carry out the watering process, at temperatures above 32oC  the paranet can be lowered, and when the water is full or empty, the water supply can be detected accurately. NodeMCU can connect to the Telegram application with the help of a Telegram Bot library called CTBot that allows users to receive information and give orders. Keywords : soil moisture, plant watering, paranet, temperature
DESAIN ANTENA MIKROSTRIP E-SHAPED PATCH PADA FREKUENSI 5500 MHz UNTUK WIFI Fitri Elvira Ananda; Shita Fitria Nurjihan; Muhammad Arif Rahman
Jurnal Fokus Elektroda : Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Vol 6, No 4 (2021): Jurnal Elektroda Vol 6 No 4
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jfe.v6i4.20272

Abstract

Modifying the shape of the patch microstrip antenna is one way to solve the narrow bandwidth. E-Shaped patch microstrip antenna is obtained by modifying a rectangular patch mikrostrip antenna. The results on this research have succesfully compared the design and simulation antenna parameters between rectangular patch and E-shaped patch. It uses FR-4 as a substrate and works on 5500 MHz frequency for WiFi. The feeding method using a feedline method. The E-shaped patch microstrip antenna has a VSWR value of 1.04 and the antenna return loss is -33.73 dB, better than the rectangular patch. The gain of E-shaped patch is increased by almost 2.5 times and the bandwidth is increased by 10.18% compared to the rectangular patch. The radiation pattern of the two patches has the same directional radiation pattern.
Prototype Sistem Pendeteksi Longsor Berbasis Internet of Things Menggunakan Komunikasi Long Range (LoRa) Lestari, Annisa Fitri; Riani, Erna; Nurjihan, Shita Fitria; Hasani, Rifqi Fuadi
Spektral Vol. 5 No. 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/spektral.v5i2.7234

Abstract

Landslide disasters occur when materials such as rocks, debris, soil, or mixtures thereof move down a slope or out of the slope. As a natural disaster, landslides can cause material loss and loss of life. To reduce the impact, a system is needed that can monitor soil conditions continuously real-time and provide early warning to people living in landslide-prone areas. This designed system integrates a landslide-based detection tool Internet of Things (IoT) with Android applications. The system uses Realtime Database to store data from sensors, software Android Studio for developing Android applications, as well as communications Long Range (LoRa) to send sensor data to the microcontroller. This system can display data on soil moisture, rain intensity, vibration and conditions directly. If danger is detected, a buzzer will sound, and the application will send notifications quickly and precisely. Tests show that the sensor can transmit data using LoRa with an Received Signal Strength Indicator (RSSI) value of -71 dBm at 10 meters under conditions of Line of Sight, and up to 100 meters with an RSSI value of -106 dBm in the presence of obstructions. With this system, it is hoped that people in landslide-prone areas will be more alert, so that the risk of loss of life and material loss can be reduced.
Rancang Bangun Gelang GPS Tracker dengan Komunikasi Long Range (LoRa) untuk Mengetahui Posisi Pendaki Gunung Handoko, Tri; Sirait, Ari Valentino; Hasani, Rifqi Fuadi; Danaryani, Sri; Supriyanto, Toto; Nurjihan, Shita Fitria; Febryanti, Dita Indra
Telekontran : Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan Vol. 12 No. 2 (2024): TELEKONTRAN vol 12 no 2 Oktober 2024
Publisher : Program Studi Teknik Elektro, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/telekontran.v12i2.13890

Abstract

Penelitian ini bertujuan merancang dan mengembangkan gelang GPS Tracker dengan komunikasi LoRa untuk memantau posisi pendaki gunung secara real-time di area tanpa sinyal seluler, serta memberikan notifikasi darurat. Sistem ini menggunakan modul GPS untuk menentukan lokasi pendaki dan modul LoRa untuk mengirimkan data lokasi ke sesama pendaki dan pos pendaki. Semua data pendaki, termasuk lokasi mereka, akan ditampilkan di aplikasi android. Pengujian dilakukan di Hutan UI dan Bukit Pelangi untuk mengevaluasi akurasi koordinat yang dikirimkan. Di Hutan UI, koordinat yang dikirimkan oleh Leader dan dua Pendaki menunjukkan kesesuaian dengan posisi sebenarnya, dengan akurasi hingga 0,000013° untuk lintang dan 0,00005° untuk bujur. Di Bukit Pelangi, deviasi koordinat maksimal sekitar 0,000043° untuk lintang dan 0,00006° untuk bujur. Sistem ini mampu melacak posisi pendaki secara akurat, menampilkan semua data pendaki, menyajikan laporan historis pergerakan dalam peta, serta memberikan notifikasi darurat yang cepat ke pemimpin pendakian dan pos pendaki. Gelang ini diharapkan meningkatkan keamanan pendaki dan mempercepat proses penyelamatan oleh tim SAR
DIGITALISASI TIMBANGAN BALITA BERBASIS INTERNET OF THINGS (IOT) UNTUK OPTIMALISASI LAYANAN POSYANDU Nurjihan, Shita Fitria; Setiati, Anik Tjandra; Febryanti, Dita Indra; Prasetya, Irwan; Danaryani, Sri
Jurnal Abdimas Ilmiah Citra Bakti Vol. 6 No. 1 (2025)
Publisher : STKIP Citra Bakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38048/jailcb.v6i1.4568

Abstract

Kualitas pelayanan Posyandu sangat penting bagi kesehatan masyarakat, terutama dalam mencegah kekurangan gizi pada balita. Posyandu Sejahtera RW 03, Kelurahan Beji Timur memiliki 43 balita yang secara rutin dipantau tumbuh kembangnya, namun keterbatasan pencatatan manual menghambat efektivitas layanan. Tujuan kegiatan ini adalah mengembangkan dan mengimplementasikan timbangan balita berbasis Internet of Things (IoT) yang terintegrasi dengan aplikasi Android untuk pencatatan data secara digital, sehingga memudahkan kader Posyandu dalam pemantauan pertumbuhan balita secara real-time. Mitra kegiatan ini adalah kader Posyandu Sejahtera, yang terdiri dari 9 orang dengan latar belakang pemahaman teknologi yang beragam. Metode pelaksanaan terdiri dari (1) persiapan, meliputi survei lokasi dan diskusi dengan mitra; (2) perancangan dan pembuatan perangkat IoT menggunakan sensor Load Cell dan HX711 untuk mengukur berat badan, serta sensor Ping Parallax untuk tinggi badan; (3) pelatihan kader Posyandu dalam penggunaan alat dan aplikasi Android; (4) implementasi dan simulasi penggunaan alat, serta (5) evaluasi efektivitas program melalui survei kepuasan mitra. Hasil kegiatan menunjukkan peningkatan signifikan dalam pemahaman dan keterampilan kader dalam menggunakan sistem digital, dengan 88,9% peserta merasa sangat puas, serta 100% peserta menyatakan bersedia bekerja sama dalam program lanjutan. Selain itu, sistem yang diterapkan memungkinkan pencatatan data yang lebih akurat dan mudah diakses, mengurangi risiko kehilangan data, serta mempercepat pengambilan keputusan dalam pemantauan gizi balita. Digitalisasi pencatatan gizi berbasis IoT dapat meningkatkan efisiensi layanan Posyandu serta mendukung kader dalam memberikan intervensi lebih cepat terhadap masalah gizi balita.
Co-Authors Abdul Aziz Achmad Munir Aini, Syifa Nurul Alica Dewanti Ananda, Fitri Elvira ANGELICA, MOLLIYANA TOTA Annisa Shafira Darmawan Ardina Askum Benny Nixon Benny Nixon DITA INDRA FEBRYANTI, DITA INDRA Erna Riani Fitri Elvira Ananda Harits Lukmanul Hakim Hasani, Rifqi Fuadi Irwan Prasetya Kurniawati, Nazmia Kusuma, Dandi Lestari, Annisa Fitri Molliyana Tota Angelica Mughni Tabroni Muhammad Arif Rahman Muhammad Faris Permana, Rafli Pranoto, Dwitio Ahmad Prasetya, Irwan Putri, Khomala PUTRI, KHOMALA ERNIA Rafif, Muhammad Rahman, Muhammad Arif Regitta Octavia Siswono Rifqi Fuadi Hasani Rifqi Fuadi Hasani Rizki Azka Fihi Aghnia Setiati, Anik Tjandra Shalsa Luthfita Chairiza Siahaan, Abelitho Sianipar, Virgie Aubrey Hemas Sirait, Ari Valentino Sofian, Rivaldi Adi Sri Danaryani Sutanto, Sutanto Toto Supriyanto Tri Handoko Yenniwarti Rafsyam