Perancangan dan Optimalisasi Bandwidth Antena Wideband dengan Dua Setengah Circular Path untuk Aplikasi C-Band (4GHz-8GHz)

Komunikasi jarak jauh memerlukan desain antena yang memiliki karakteristik pita lebar (wideband). Antena wideband memiliki karakteristik dapat menerima frekuensi yang lebar (wideband), salah satu jenis antena yang mendukung teknologi dalam antena sistem komunikasi satelit adalah antena mikrostip. Antena microstrip dengan dirancang dua setengah circular patch mampu bekerja optimal pada frekuensi 4,5GHz – 8,4GHz dengan lebar bandwidth sebesar 4000MH. Penggunaan dua setegah circular patch jauh lebih efektif pada saat simulasi return loss yakni optimal hingga -25dB. Patch dengan sudut circular mampu memperbesar lebar bandwidth jika dibandingkan dengan patch berbentuk rectangular. Dimensi antena perlu digeser lagi agar frekuensi antena bisa benar-benar tepat pada frekuensi 4GHz – 8GHz. Perlu dipertimbangkan juga dimensi antena akan lebih besar jika harus menggeser frekuensi kerja

Rancang Bangun Aplikasi Agent Layanan Internet Berbasis Sistem Embedded Ebox-4300

The high level of development of telecommunication systems cause higher demand for communications services such as internet service. Internet needs are very important so that an increasing number of Internet users is increasing every year around the world now a lot of internet access services that we can choose according to our needs, such as dial-up modem service, wireless lan services. This system is like a merger between the internet and telephone service with prepaid payment system, in addition, high demand for data communication service user will be a cheap, fuel-efficient and easily accessible. In this system the Internet service application developed as a feature common internet system. This application aims to set the authentication and validation when a user is browsing the Internet. Calculation of fees will be determined by calculating the volume of data flowing at the time of browsing on the run. Volume data will be captured by SNMP application running on a web browser. These applications run on Windows CE embedded devices eBox-4300 computer. The results of this research is the system can be applied as data and voice communications services together with the means of payment of bills. Key Word : eBox-4300, Web Browser, SNMP

Perancangan dan Analisa Kinerja Fiber to the Building (FTTB) untuk Mendukung Smart Building di Daerah Urban

The development of digital technology makes it easy for humans to do activities, including compliance with the requirement of voice, data, and video communication in office buildings. Infrastructures are a primary consideration for a reliable connection, large-capacity, and stable communication lines. Recently, Fiber-optic communication systems are now the backbone of information signal delivery technology. This paper proposes a design of optical fiber transmission media for deployment in urban office buildings. It has been called fiber to the building (FTTB), which uses a fiber optic communication system to support the availability of multimedia network in an office area. A typical office building in an urban area has a multilevel structure that is used by various companies with multimedia network access services to support business activities. This study considers XGPON technology as a fiber optic-based broadband access technology that is deemed appropriate to the needs of the use of a multimedia network. The design begins with conducting a data collection survey. The next is the chosen device components based on the estimated distribution of the number of users. There are three parameters will be calculated include Power Link Budget (PLB), Rise Time Budget (RTB), and Bit Error Rate (BER), to determine the design feasibility. Based on PLB, RTB, and BER data, the proposed fiber to the building (FTTB) can meet the parameters to be achieved in the design, namely PLB of -27,24 dBm for downstream and -11,68 dBm for upstream, the value of is 0,049 ns, and value of BER is 0,186 x 10-1085. The design of FTTB can meet the requirement of users with a bandwidth of 9014,4 Mbps for 1200 users

Prototipe Deteksi Letak Kebocoran Pipa dengan Optimalisasi Kinerja Penerimaan Paket LoRa menggunakan Pengkodean Parameter Fisik

The purpose of this research is to determine the effect of the physical coding of LoRa communications on monitoring water pipelines. Optimizing the performance of packet receivers in the LoRa communication system using coding on the physical parameters SF (spreading factor), BW (bandwidth), and CR (coding rate). The detection system consists of 3 sensor nodes, 3 intermediate nodes, and 1 receiver node. Data from these sensors is sent to a cloud database. The SX1278 LoRa communication module works using a 433 MHz frequency. During the transmission process on the LoRa communication system, optimization is carried out for receiving data packets using the parameter coding method of physical spread factors, bandwidth, and coding rate. As a result of the research, it is shown that the greater the value of the third parameter (SF, BW, and CR), such as improvement in packet reception performance, improvement in bit security, and increasing packet resistance to various disturbances in transmission, but the time required for sending data be longer. The optimal parameters for detecting pipe leak locations include SF 10, BW 500 KHz, and CR 4/8. The LoRa SX1278 scenario is optimal with a distance of 400 meters, where packet and byte reception are obtained 100%

Design and Implementation of The Smart Weighing Precision Livestock Monitoring Technology based on the Internet of Things (IoT)

The traditional approach to weight measurement, which measures each sheep individually, is time-consuming, and sometimes, human error triggers other issues, such as data validation, sheep classification, etc. Most farmers or breeders nowadays still manage their livestock traditionally, which is inefficient. We proposed that the Livestock Live Monitoring System is designed to collect measured data in real-time and display data in graphics; these models combine Bluetooth Low Energy as a wearable sensor to identify animals and Smart Weight Measurement to deliver weight and health data to the cloud system. This system aims to measure livestock and store the data in the server application so livestock monitoring can be done in real-time and remotely. The technology used in this system is ESP32, Load Cell, Bluetooth Low Energy, and Message Queue Telemetry Transport Protocol. Wearable devices act as an identification tag for livestock, and a smart weight scale is used to weigh the livestock and integrate it with the system. Two sheep are used as experiment objects, and their measured weight is compared to their weight when measured traditionally using a conventional scale. Based on the experiment, the weight data measured using the system has an accuracy of 99.82% for sheep number 1 and 99.17% for sheep number 2. This proposed system provides many benefits, including real-time livestock monitoring, cost efficiency, and an efficient feeding system for sheep using weight data