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172 articles for “RF systems”
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Arduino-Based Embedded-Software for Offline and Web-Based Attendance System
Abstract: Embedded software originally controlled hardware but algorithm and software developed determine mode of control and action expected of the hardware. Arduino hardware microcontroller board called Arduino UNO is one of the best electronics boards with coding these days while many attendance systems developed today are mostly one-way. Many developing and underdeveloped countries cannot guaranty 24/7 electricity and strong network connection or data for fully online attendance system. Based on this …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 9, Issue 3, 2021 · pp. 12–22 Read article
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Small Size High Gain Antenna and High Efficiency Rectifier for RF Energy Harvesting in 2.45 GHz ISM Band
Abstract: A streamlined microwave energy harvesting system to harvest energy in 2.45 GHz presented in this paper. An electromagnetically coupled square micro-strip antenna is designed and fabricated for formation in proposed system. Antenna gain of 6.7 db and bandwidth from 2.42to 2.47 GHz is achieved. The maximum gain of proposed antenna is 24 db at frequency 2.1 GHz. Rectifier circuit consists of a resonant circuit and a boosting circuit for enhancing …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 1, 2016 · pp. 41–46 Read article
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Automatic Classroom Lighting Controller and Energy Saving Based on Microcontroller Unit
Abstract: The rise in energy costs urged the need in minimizing the energy consumption. As significant amount of energy is used for illuminating in educational buildings such as lecture halls and lecture rooms, improvement is needed to avoid energy wastage for unoccupied and during daylight hours. The lighting will be controlled based on demand to save the energy costs. This paper introduces the common existing problem that lights work in classrooms …
Published in Journal of Microelectronics and Solid State Devices · Vol. 3, Issue 2, 2016 · pp. 1–4 Read article
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From High-Resolution Optics to High-Bandwidth Telemetry: The Evolution of Deep-Space Imaging Satellites
Abstract: The development of deep space imaging satellites has significantly enhanced satellite communication and space exploration capabilities. Earlier satellite systems relied on low-resolution imaging and conventional radio-frequency (RF) communication, which limited data transmission rates and image quality. With advancements in technology, modern satellites are equipped with high-resolution optical systems capable of capturing detailed images of celestial bodies. Furthermore, the introduction of high-bandwidth telemetry systems, such as Ka- band and optical (laser) …
Published in Trends in Opto-electro & Optical Communication · Vol. 16, Issue 1, 2026 · pp. 34–40 Read article
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Smart Irrigation Monitoring System
Abstract: AbstractIn this paper we develop a fully Smart Irrigation System based on Node MCU ESP8266 and an IoT app, the BLYNK. Basically, information from a plantation will be captured, temperature and humidity, both of air and soil. Based on those data, then we will decide the right amount (and when) the plantation should receive heat and water. Also, the project should allow manual intervention of an operator in order to …
Published in Current Trends in Signal Processing · Vol. 9, Issue 2, 2019 · pp. 20–22 Read article
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AI-Powered Smart Door Lock System with IoT Integration for Enhanced Home Security
Abstract: An AI-Powered Smart Door Lock System with IoT Integration for Enhanced Home Security system is an advanced security solution that utilizes sensors, microcontrollers, and authentication mechanisms to control access efficiently. This system is designed to enhance security and convenience by eliminating the need for traditional keys, reducing the risks associated with lost or duplicated keys. It operates using various authentication technologies such as RFID (Radio Frequency Identification), fingerprint recognition, and …
Published in Journal of Mechatronics and Automation · Vol. 12, Issue 2, 2025 · pp. 34–38 Read article
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Home Automation and Security using Advanced Communication Technologies
Abstract: Demand for automation and security is increasing day by day due to change in social structure from combined to nuclear family. This study presents a low cost, highly flexible and easy to use automation and security system. By using GSM (Global System for Mobile) module along with microcontroller, home appliances can be controlled from anywhere outside. RFID (Radio-frequency identification), GSM and Bluetooth are the communication devices which can be controlled …
Published in Journal Of Network security · Vol. 7, Issue 1, 2019 · pp. 7–10 Read article
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Detailed Study On Physical Properties Of Silicon Nitride Films Deposited By Plasma Enhanced Chemical Vapour Deposition System
Abstract: Amorphous silicon nitride films have been deposited by radio frequency plasma enhanced chemical vapor deposition (RF-PECVD) technique using silane (SiH4) and ammonia (NH3) as source gases. Investigations have been made in detail to understand the influence of process parameters such as RF power, substrate temperature, gas flow ratio, working pressure etc, on the optical, electrical and surface properties in order to obtain dielectric Si3N4 films for semiconductor device applications. Amorphous …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 3, Issue 1, 2016 · pp. 1–8 Read article
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Design of a SmartMesh IP Network with Wireless Motes and GUI Control
Abstract: SmartMesh IP is an innovative way to connect smart devices with advanced network management and comprehensive security features. SmartMesh IP delivers reliable, scalable, and energy efficient wireless sensor connectivity. In recent years, SmartMesh IP has become the industry’s most energy- efficient wireless mesh sensing technology even in harsh and dynamically changing radio frequency (RF) environments. This paper proposes a SmartMesh IP network system that consists of a network manager and …
Published in Journal of Microcontroller Engineering and Applications Read article
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Phase Noise Reduction in WLAN by Applying Wavelet Packet Multiplexing
Abstract: The IEEE 802.11 standards for wireless Local Area Networks (LANs) commercialized as Wi-Fi are deployed in office and home environments. These systems provide data rates up to 1300 Mbps at 5 GHz and 400 Mbps at 2.4 GHz with physical layer based on OFDM and MIMOOFDM. Traditionally, multiplexing in OFDM is realized using static orthogonal waveforms derived from Fourier transforms. The decoding of the data at receiver is based on …
Published in Journal of Communication Engineering & Systems · Vol. 7, Issue 3, 2017 · pp. 8–15 Read article
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Attendance System Based on Facial Recognition
Abstract: Attendance management is a fundamental aspect of educational institutions and workplaces, ensuring accountability, discipline, and operational efficiency. Traditional methods, such as manual roll calls, RFID cards, and fingerprint scanners, are often time-consuming, error-prone, and susceptible to fraud. This research presents an automated attendance management system utilizing face recognition technology to address these challenges effectively. The proposed system employs OpenCV for real-time image processing, the face recognition library for accurate facial …
Published in International Journal of Electronics Automation · Vol. 3, Issue 1, 2025 · pp. 28–34 Read article
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Smart Urban Traffic Management System
Abstract: In recent years, the ownership of private vehicles has increased many folds, which is causing difficulty in management of urban traffic. Traffic management is the focus area for most urban dwellers and planners. Some of the main concerns for traffic management of big cities is traffic congestion and avoidance, as these issues cause huge damages on both personal and environmental level. Moreover, in many cities traffic signal lights at crossing …
Published in Trends in Transport Engineering and Applications · Vol. 4, Issue 1, 2017 · pp. 56–65 Read article
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Dielectric Polymer Based Tunable Bandpass Filter for RF MEMS Applications
Abstract: In this paper, we report on the design, modeling, and analysis of a tunable bandpass filter implemented in a coplanar waveguide (CPW) configuration, where a distributed MEMS transmission line (DMTL) is integrated with dielectric polymer layers to achieve dynamic frequency and bandwidth reconfigurability. The proposed filter architecture leverages the tunable dielectric response of polymer films, enabling precise control of the center frequency and passband width under applied electrostatic bias. Comprehensive …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1449–1470 Read article
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Li-Fi based Underwater Audio and Data Transmission System
Abstract: Visible Light Communication, or Li-Fi (Light Fidelity), is a wireless optical networking technique used for communication (VLC). Due to its lack of RF communication's drawbacks, such as water absorption and scattering, Li-Fi has the potential to completely transform underwater communication. This project suggests utilizing two Arduinos, a solar panel, a speaker, a display, an amplifier, a laser, a battery, and other components to create a Li-Fi based underwater audio and …
Published in Recent Trends in Fluid Mechanics · Vol. 11, Issue 2, 2024 · pp. 23–29 Read article
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Brain And Gesture Controlled Assistive System For Physically Challenged Individuals
Abstract: Assistive communication technologies are essential for improving the independence of individuals with physical and sensory disabilities. This paper presents the design and implementation of a multimodal assistive system that integrates brain signal acquisition and gesture recognition for real- time communication. The system utilizes an Electroencephalography (EEG) sensor to capture neural activity and a PAJ7620 gesture sensor along with an ADXL335 accelerometer to detect hand movements. The acquired signals are processed …
Published in Recent Trends in Sensor Research & Technology · Vol. 13, Issue 1, 2026 · pp. 36–43 Read article
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Communiqué on “Robotics Medical Support System (RMSS)”
Abstract: Now days Internet of Things became very successful and peak communication network technology which can connect all possible living non-living objects, creatures and robots with each other with their unique RFID and hence my thinking started with this vision how can robotics and IoT we can merge for mankind benefits and overcome with the concept of “Robotics Medical Support System (RMSS)”.
Published in Journal of Automobile Engineering and Applications · Vol. 5, Issue 3, 2018 · pp. 21–22 Read article
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Real Time Hand Gesture Control Wireless System with ANN
Abstract: AbstractThis paper presents a low cost, wireless, embedded system which recognizes the hand gesture of user by decoding acceleration signal. Main aim of designing this system is to sense the movement of user hand and use it to control the electronic applications like movement of cursor on screen which is useful for gamming. In this paper, by using wireless and accelerometer technology, we developed an advanced HCI (Human computer Interface). …
Published in Journal of Microcontroller Engineering and Applications · Vol. 5, Issue 2, 2018 · pp. 1–5 Read article
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Traffic Signal Ambulance for Fastag Radio Wave Signal
Abstract: Radio frequency identification (RFID) tag communication with electrical reader E-reader (comers) connect to larger network based on data particular (RFTD), traffic congesting problem is a phenomena huge impact to the transportation system in country. This couses many problem spacially when there are emergency cuses at traffic light interections which are alwass busy with many vechicles. A traffic light controller system is designed in order to solve problems.
Published in Current Trends in Signal Processing · Vol. 11, Issue 1, 2021 · pp. 30–35 Read article
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One Card Travel
Abstract: Mumbai, Delhi, Kolkata, Bengaluru, and other most populated cities have millions of people as daily commuters. It has mass transit (trains and buses), all forms of private transport, and autorickshaws and taxis that serve an important role in the transportation system of the city such as overcrowding in buses, autos, taxis, trains, etc. Due to over-crowding, the commuters travel into jam-packed compartments, most of them standing. At times they get …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 1, 2021 · pp. 10–16 Read article
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Consistent Tracking of Goods Throughout the Transportation Chain Based on Internet of Things and Wireless Sensor Network
Abstract: Consistent tracking of goods throughout the transportation process is a critical task for cargo-owners, transportation companies and the receiver customers who would get their desired belongings. In this paper, we have proposed a Wireless Sensor Network and cloud server based goods consistent tracking system throughout the transportation chain. Our purposed system does not only monitor the status of the transport vehicle by Waspmote mounted on it, but it has smart …
Published in Journal of Communication Engineering & Systems · Vol. 7, Issue 3, 2017 · pp. 36–44 Read article