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Rancang Bangun Antena Stacked turnstile Pada Frekuensi 2,4 GHz Untuk Aplikasi WIreless Local Area Network (WLAN) Erwan Dian Sitoresmi; waluyo waluyo; Koesmarijanto Koesmarijanto
Jurnal Jaringan Telekomunikasi Vol 1 No 1 (2015): Vol 01 No 01 (2015) : Mei 2015
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v1i1.124

Abstract

The purpose of this research is to design an antenna that will be used as a transmitting antenna that can level up the receiver. The designed antenna is a stacked turnstile antenna that has again of 3dB from previous studies. At the turnstile antenna using a power divider to raise the antenna gain of 1.5dB. Power divider is used Wilkins on power divider with a vertical stack. The stack distance used is0.6?. From the results of the implementation of the AntennaLaboratory of the Polytechnic of Malang, a stacked turnstile antenna produces vertical polarization and omnidirectional radiation patterns. Value of the measured return loss is-13.8dBat a frequency of 2,384MHz. Additionally stacked turnstile antenna has a value of 4.83dBi gain. VSWR values were measured at a frequency of 2,384GHz is 1,091 and has 425MHz bandwidths frequencies ranging from 2275 to 2700MHz. Level of signal reception at the access point-Link TL Type WA 5110G higher than 4dbm antenna access point, while stacked turnstile antennas transmitting antenna at a maximum distance of 100m to get the signal reception is better than 84dB antenna access point signal reception-89dB.
Determination of Quantity Fertilizer for Sugarcane Based on Wireless Sensor Network Adinda Abdillah; Muhammad Nanak Zakaria; Waluyo Waluyo
Jurnal Jaringan Telekomunikasi Vol 12 No 4 (2022): Vol. 12 No. 04 (2022) : December 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v12i4.350

Abstract

Fertilization plays a very large role in crop yields if done in the right way, effective and efficient fertilization will be achieved if the soil fertility conditions are known in advance. However, the problem is that farmer fertilization is still carried out by means of estimates based on land area without estimating the factor of soil needs.In this study the system uses a Wireless Sensor Network where there are 2 nodes installed on the land to monitor the measurement of soil moisture, soil pH, and nutrients using soil moisture sensors, soil pH sensors, and NPK sensors. From these sensors, it will be integrated through the Arduino Uno microcontroller which will later be connected to the LoRa system to send measurement information data on the land to the raspberry pi.The communication system between nodes is designed with a peer to per topology. The results of this study are the use of appropriate fertilizers and then can restore soil conditions to ideal soil conditions. From the experimental results, it is found that the peer to peer communication system can work well.
Design and build a digital TV receiver double biquad antenna for the Greater Malang region and its surroundings Waluyo Waluyo; Koesmarijanto Koesmarijanto; Lis Diana Mustafa
Jurnal Jaringan Telekomunikasi Vol 12 No 4 (2022): Vol. 12 No. 04 (2022) : December 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v12i4.523

Abstract

Many types of antennas can be used for digital TV receivers; in this article we try to design a double biquad antenna. This is due to a simple form, easy to make, a wide beamwidth. In designing a digital TV receiver for the Malang area, an STB device is needed, so that analog TV can still receive digital TV broadcasts. In this study, the antenna is made of copper wire, each side length: ¼ ? , with a working frequency: 650 MHz. In order to match the impedance of the 75? coaxial cable with the antenna, a  balun 4:1 is required. The research place is in the Polinema Telecommunications laboratory. The test results show that the lowest return loss (RL) occurs at a frequency of F=605 MHz, namely RL: -17.8 dB, for a frequency of F=650 MHz, the magnitude of RL: -11.3 dB. The large VSWR antenna at the working frequency F: 650 MHz is 1.46. So that it can be said that it has fulfilled the antenna parameters, namely VSWR < 2. It means that there is a power loss of less than 10%. The largest antenna gain occurs at a frequency: 400 MHz namely: 14.85 dB,. While the average gain of the antenna is 2.21 dB. The antenna radiation pattern is omni directional. The double biquad antenna is very good for use as a digital TV receiver for the Greater Malang area, either without using a reflector or with a reflector.
A Design of Optimization of Goat Sales Based on The Website Taufik Indra P. Taufik; Lis Diana Mustafa; Waluyo Waluyo
Jurnal Jaringan Telekomunikasi Vol 13 No 2 (2023): Vol. 13 No. 02 (2023) : June 2023
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v13i2.542

Abstract

Currently, goat farming is one of the fastest growing businesses. Developments that occur include buying and selling that can be done through e-commerce available on digital media. E-commerce can increase sales from goat breeders through complete descriptions and goat productivity. Based on the description above, it is necessary tools and systems that can help increase the productivity of goat farmers. The method used is to carry out the process of weighing goats using loadcell, measuring goat body temperatures using MLX614 temperature sensors, and RFID sensors used to detect goat ID, goat type, and weighing time. In addition, it also uses Arduino as a microcontroller and raspberry pi as a server. There are sensor nodes and server nodes where data will be sent from the arduino uno sensor server node raspberry pi 3RF24L01. Communication technique is client server designed for communication between the client node and the server so that error the data transmission smaller. The results of testing tools and systems include testing the accuracy of sensors having several sensor values ??such as RFID, Loadcell and temperature sensors MLX90614 with several points, namely for RFID itself it is concluded that the success rate is read 100%, for the accuracy level of the loadcell sensor with a comparison of some of the scales carried out 10, the average error was 0.77% and the testing accuracy of the MLX90614 temperature sensor with a thermogun comparison, the average error value before calibration was 7.565%, while after calibration, the average error value was 0.507%.
Design and Build Automatic Catfish Feeding System Biofloc Muhammad Naufal Apsara Firyadha Naufal; Nurul Hidayati; Waluyo Waluyo
Jurnal Jaringan Telekomunikasi Vol 13 No 2 (2023): Vol. 13 No. 02 (2023) : June 2023
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v13i2.566

Abstract

Catfish is one of the results of freshwater cultivation that is popular with the community and has economic value. The high public interest in catfish, is one of the factors cultivators increase production yields. Feeding and treatment of catfish pond water still uses human resources. This reduces the efficiency of the farmer and allows for negligence in providing feed and water treatment if the farmer has a large number of ponds or more than one. In this study, it is proposed to control and monitor feeding and water treatment with a biofloc system automatically and regularly, with the catfish biofloc system also obtaining natural food when the feeding schedule is raining. It takes a wireless sensor network system as a control system, fc-37 sensor, Total Dissolved Solids (TDS), Loadcell, Real Time Clock (RTC). All of these sensors will be integrated with the Arduino Uno which will then send data from each sensor to the Raspberry Pi with the nRF24l01 communication module. The results of this study are monitoring the appearance of the web server processed by the Raspberry Pi which shows feed availability, pond conditions and turbidity levels. From the experimental results, it is found that the planned system can work well and as desired.