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All Journal International Journal of Electrical and Computer Engineering TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Indonesian Journal of Electrical Engineering and Computer Science
Akio Kitagawa
Kanazawa University
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering

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LHCP four patches stack triangular truncated antenna using corporate feed microstrip-line for CP-SAR sensor Muhammad Fauzan Edy Purnomo; Vita Kusumasari; Rudy Yuwono; Rahmadwati Rahmadwati; Rakhmad Romadhoni; Azizurrahman Rafli; Yuyu Wahyu; Akio Kitagawa
International Journal of Electrical and Computer Engineering (IJECE) Vol 11, No 5: October 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v11i5.pp4125-4134

Abstract

In this paper, we acquire the configuration of the left-hand circular polarization (LHCP) array four patches stack triangular truncated microstrip antenna. This construction use the basic corporate feed microstrip-line with modified lossless T-junction power divider on radiating patch for circularly polarized-synthetic aperture radar (CP-SAR) sensor embedded on unmanned aerial vehicle (UAV) with compact, small, and simple configuration. The design of circular polarization (CP) is realized by truncating the whole three tips and adjusting the parameters of antenna at the target frequency, f = 5.2 GHz. The results of characteristic performance and S-parameter for the LHCP array four patches stack antenna at the target frequency show successively about 9.74 dBic of gain, 2.89 dB of axial ratio (Ar), and -10.91 dB of S-parameter. Moreover, the impedance bandwidth and the 3 dB-Ar bandwidth of this antenna are around 410 MHz (7.89%) and 100 MHz (1.92%), respectively.
Development of triangular array eight patches antennas for circularly-polarized synthetic aperture radar sensor Muhammad Fauzan Edy Purnomo; Vita Kusumasari; Edi Supriana; Rusmi Ambarwati; Akio Kitagawa
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 18, No 2: April 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v18i2.14759

Abstract

In this paper, we obtain the left-handed circularly polarized (LHCP) and right-handed circularly polarized (RHCP) of triangular array eight patches antennas using corporate feeding-line for circularly polarized-synthetic aperture radar (CP-SAR) sensor embedded on unmanned aerial vehicle (UAV) with compact, simple, and efficient configuration. Although the corporate feeding-line design has already been developed, its design was for the side antenna view of 0° and only produced one of LHCP or RHCP instead of both. Here, the design for LHCP and RHCP eight patches array fed by corporate feeding-line having the side antenna view of 36° at f=1.25 GHz for CP-SAR are discussed. We use the 2016 version of computer simulation technology (CST) to realize the method of moments (MoM) for analyzing. The performance results, especially for gain and axial ratio (Ar) at resonant frequency are consecutively 13.46 dBic and 1.99 dB both of LHCP and RHCP. Moreover, the 12-dBic gain-bandwidth and the 3-dB Ar-bandwidth of them are consecutively around 38 MHz (3.04%) and 6 MHz (0.48%). Furthermore, the two-beams appeared at boresight in elevation plane for average beamwidth of 12 dBic-gain and the 3 dB-Ar LHCP and RHCP have similar values of around 12° and 46°, respectively.
A performance of radio frequency and signal strength of LoRa with BME280 sensor Puput Dani Prasetyo Adi; Akio Kitagawa
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 18, No 2: April 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v18i2.14843

Abstract

LoRa is a Radio Frequency module that can send packet data up to 3 km in FSPL.LoRa has 3 different Frequency Radios i.e, 915 MHz, 868 MHz, and 433 MHz. LoRa testing is based on different distances, BME280 provides Barometric Pressure, Temperature, and Humidity data. An analysis from the results of the Received Signal Strength to the distance (m) to the farthest point to prove and provide QoS data from LoRa 915 MHz. Sensor nodes are built using ADR and Automatic sleep mode algorithms. Communication systems between nodes are built dynamic sensor nodes in mesh networking. Monitoring signal transferring on the 915 MHz Frequency waveform is carried out using the Textronix Spectrum analyzer. Based on the BME280 Data packet transmission from the LoRa 915 MHz Transmitter to the Receiver Receiver at a distance of 100m is -84 dBm and at a distance of 500m is -107 dBm. The LoRa Internet Gateway has 2 types of settings, i.e, application, and gateway, this setting is to find out the location of the gateway with longitude and latitude. Furthermore, the gateway holds Sensor data from the End node, while the Application Server displays sensor data in the form of Graphics in realtime.
Development of patch stack antenna for CP-SAR sensor Muhammad Fauzan Edy Purnomo; Vita Kusumasari; Rusmi Ambarwati; Sigit Kusmaryanto; Sholeh Hadi Pramono; Dwi Fadila Kurniawan; Akio Kitagawa
Bulletin of Electrical Engineering and Informatics Vol 10, No 1: February 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i1.2672

Abstract

In this paper, we obtain the basic configuration of the left-hand circular polarization (LHCP) array two patches stack triangular truncated microstrip antenna. This construction use the basic corporate feed microstrip-line with modified lossless T-junction power divider on radiating patch for circularly polarized-synthetic aperture radar (CP-SAR) sensor embedded on airspace with compact, small, and simple configuration. The design of Circular Polarization (CP) is realized by truncating the whole three tips and adjusting the parameters of antenna at the resonant frequency, f=5.2 GHz. The results of characteristic performance and S-parameter for the LHCP array two patches stack antenna at the resonant frequency show successively about 7.24 dBic of gain, 1.99 dB of axial ratio (Ar), and -11.43 dB of S-parameter. Moreover, the impedance bandwidth and the 3 dB-Ar bandwidth of this antenna are around 560 MHz (10.77%) and 50 MHz (0.96%), respectively.
LoRaWAN Technology in Irrigation Channels in Batu Indonesia Puput Dani Prasetyo Adi; Akio Kitagawa; Dwi Arman Prasetya; Rahman Arifuddin; Stanislaus Yoseph
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol 7, No 3 (2021): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v7i3.22258

Abstract

Currently, agricultural technology or Farming development is increasingly sophisticated by applying LoRaWAN-based IoT technology, ignoring quality agricultural products. LoRaWAN used in this research uses Long-Range Frequency 915 MHz and 920 MHz. The case study in this research is a case of river water quality that enters agricultural land or irrigation in Temas, Batu City, where the river water has been contaminated by household waste. The prototype installed on this farm uses an Arduino and Dragino LoRa 915 MHz microcontroller as transceivers and input and output devices consisting of ultrasonic sensors and water pH sensors, and outputs such as Solenoid valves mounted on tub one and tub 2. In contrast, tub 3 is a unique tub for distributing water to agricultural land with normal water pH quality. In this research, real-time monitoring, especially on the conditions of water turbidity, water pH, and water level.
LOW-POWER AND LOSSY NETWORKS OF WIRELESS SENSOR NETWORKS WITH PROTOCOLS ALGORITHM COMPARISON Puput Dani Prasetyo Adi; Akio Kitagawa; Abdur Rabi; Nachrowie .; Rahman Arifuddin
JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 3, No 1 (2020): February 2020
Publisher : Merdeka Malang University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jeemecs.v3i1.3876

Abstract

This research focuses on the energy efficiency needed by sensor nodes in the network architecture i.e, LEACH, HEED, LEACH-TLCH and PEGASIS according to the Routing Protocol Low Power and Lossy Network (RPL) pattern. In this research compared all algorithms based on the number of different sensor nodes. In this research, there is no focus on the type of sensor used but rests on the conclusions of the total results of the Overall energy (Avg_Energy) on clustering with the most appropriate networking strategy. In this research, 20, 50 and 100 nodes were tested in the HEED, LEACH, LEACH-TLCH and PEGASIS Algorithms respectively. furthermore, from the results of testing the total Power (mW) sensor obtained from the sum of 4 components of the Power Sensor node, i.e, CPU Power, Power LPM, Power TX (Transmitter) and Power Rx (Receiver), concludes the Power Consumption sensor node is affected by the number of nodes found on the Sensor Node Network Architecture, the lowest Power Consumption is the LEACH Algorithm Protocol with a total of 2,038 mW at 100 nodes, while the highest Power Consumption is LEACH-TLCH Protocol Algorithm 4,851 mW with 100 nodes followed by PEGASIS with total Consumption 4.31 mW. accordingly the simulation, At the lowest sensor node in this experiment, which is 20 nodes, LEACH produces the lowest total Power of 1.21 mW, while the highest is PEGASIS 1,361 mW. At the number of 50 nodes, the lowest is HEED with a power consumption of 1,558 mW, this result is only 0.046 mW with the LEACH Algorithm Protocol which is 1,604 mW. Furthermore, by building the right sensor network (WSN) it will support IoT networks with long sensor lifetime.
Triangular Microstrip Antenna for Circularly-Polarized Synthetic Aperture Radar Sensor Application Muhammad Fauzan Edy Purnomo; Akio Kitagawa
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 1: October 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v12.i1.pp310-318

Abstract

In this paper, we obtain the basic construction of triangular microstrip antennas based on the analysis of the single patch and array two patches. This construction use the basic corporate feeding-line with modified lossless T-junction power divider for Circularly Polarized-Synthetic Aperture Radar (CP-SAR) sensor embedded on airspace with compact, small, and simple configuration. The design of Circular Polarization (CP) is realized by truncating the whole three tips and adjusted the parameters of antennas at the resonant frequency, f = 1.25 GHz. The equations for reciprocal, lossless, and matched of the modified lossless T-junction power divider are also described. The result of characteristic performance and S-parameter for the single patch both Left-Hand Circular Polarization (LHCP) and Right-Hand Circular Polarization (RHCP) at the resonant frequency show consecutively 7.15 dBic and 7.16 dBic of gain, 0.12 dB and 0.11 dB of axial ratio, -26.75 dB and -26.72 dB of S-parameter. For array two patches, the result of gain, axial ratio, and S-parameter both of LHCP and RHCP are 7.63 dBic, 7.62 dBic, 2.68 dB, 2.74 dB, -19.43 dB, and -19.40 dB, respectively. The modified lossless T-junction power divider both for LHCP and RHCP are capable of being reciprocal, matched, and lossless at all ports.
Analysis of IoT-LoRa to Improve LoRa Performance for Vaname Shrimp Farming Monitoring System Puput Dani Prasetyo Adi; Idil Ardi; Nicco Plamonia; Yuyu Wahyu; Angela Mariana L; Hessy Novita; Dendy Mahabror; Riza Zulkarnain; Adi Wirawan; Yudi Prastiyono; Waryanto Waryanto; Suhardi Atmoko Budi Susilo; Rizky Rahmatullah; Akio Kitagawa
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 10 No. 1 (2024): March
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v10i1.27598

Abstract

Shrimp farming requires a touch that must be right on the side of water quality; water is a fundamental factor that must be met to achieve maximum yields. Many factors affect the quality of the water, but some things cause changes in water quality caused by external and internal factors causing death in shrimp. Disease conditions in shrimp can attack at any time, coupled with external factors such as extreme climate change, and cause changes in water components such as water pH, CaMg or hardness, and other factors that cause death in shrimp. Water turbidity oxygen demand (DO) in water determines the life of shrimp. It is coupled with microorganisms that must be maintained to maintain water quality for the growth of a Vaname shrimp. This research raises the Aquaculture System, specifically in the process of intelligent monitoring of water quality in shrimp nurseries to the shrimp harvest process, especially vaname shrimp from the results of observations use three sensors connected to LoRaWAN is able to provide real-time data from pond water and transmit it to LoRa Server or Internet Server, and the realtime data can be read through a Smartphone. This research analyzes in detail the ability of LoRaWAN to send multi-sensor data and Quality of Service LoRaWAN communication at different distances. This research also discusses how the LoRa antenna design can be developed to improve the performance of LoRa as transmitting devices or Radio Frequency 920-923 MHz for sending sensor data for Aquaculture.The contribution of this research is shown in the real-time monitoring system of the water environment, namely water pH, ammonia, turbidity, DO, salinity, water temperature, and nitrate in vaname shrimp ponds. The following contribution is the development of LoRaWAN with Tago IO servers capable of being used in Smart Aquaculture for contributions to The Things Network community or LoRaWAN Community.
Co-Authors Abdur Rabi Adi Wirawan Angela Mariana L Arifuddin, Rahman Azizurrahman Rafli Dendy Mahabror Dwi Arman Prasetya Dwi Fadila Kurniawan Hessy Novita Idil Ardi Muhammad Fauzan Edy Purnomo Nachrowie . Nicco Plamonia Puput Dani Prasetyo Adi Puput Dani Prasetyo Adi Rahmadwati, n/a Rakhmad Romadhoni Riza Zulkarnain Rizky Rahmatullah Rudy Yuwono Rusmi Ambarwati Sigit Kusmaryanto Stanislaus Yoseph Suhardi Atmoko Budi Susilo Supriana, Edi Vita Kusumasari Waryanto Waryanto Yudi Prastiyono Yuyu Wahyu Yuyu Wahyu