A NOVEL MICROSTRIP ANTENNA WITH PARASITC RING FOR BEIDOU NAVIGATION SATELLITE SYSTEM

A Novel Circularly Polarised Microstrip antenna with parasitic ring is proposed for Beidou Navigation Satellite System. The antenna comprises of a double layer arrangement with Circular patch, rectangular stub and parasitic ring. The Widen Vertical HPBW and high gain at low elevation angle is the demand of the satellite system. Hence vertical HPBW is widened by using FR4 substrate with 1.6 thickness as 140° and high gain at low elevation angle is obtained by using Parasitic Ring is about -1.8dB. DOI: 10.17762/ijritcc2321-8169.15022

Thermo mechanical and Control Behaviour of Copper based Shape Memory Alloy Bimorph Actuator towards the Development of Micro Positioning System

A shape memory alloy (SMA) bimorph actuator is a composite structure composed of flexible polyimide substrate and SMA thin film deposited using thermal evaporation technique. In this work, the substrate thickness in the range of 25 - 75 mm was selected for the development of CuAlNiMn SMA bimorph actuator. An investigation on the control behavior of copper based SMA bimorph towards the development of micro positioning system has been performed. The actuation behavior of the SMA bimorph was studied using electrical actuation. Subsequently, a proportional integral derivative (PID) controller was designed to control the bimorph actuator with proper tuning of gain parameters. The displacement of the bimorph actuator was controlled through dedicated experimental setup consisted of laser displacement sensor, data acquisition system and LabVIEW software. The CuAlNiMn SMA bimorph actuator resulted in a satisfying control performance which can be extended to MEMS applications. A preliminary prototype of the SMA bimorph actuator based micro positioning system has been developed

The Proliferation of Refined Optical and Emission Properties of Silver Oxide Nanoparticles using various Leaf Extracts

Plant-mediated synthesis of nanoparticles has emerged as a promising approach, leveraging the unique properties of plant extracts. In this study, extracts from Bidens pilosa, Achyranthes aspera, and Tecoma stans were used to synthesize silver oxide nanoparticles (Ag2O NPs). The experimental results demonstrated successful synthesis of Ag2O NPs using a Soxhlet extraction method and subsequent characterization of the nanoparticles. The photoluminescence and optical properties of the synthesized Ag2O NPs were investigated, revealing distinct emission peaks and strong absorption in the visible region. The antimicrobial activity of the nanoparticles was also assessed, showing potential for their use in controlling and preventing infections. Overall, this study highlights the valuable optical and fluorescence properties of green extracts and their impact on the synthesis and functionality of silver oxide nanoparticles, paving the way for future research in the field of biotechnology and antimicrobial applications

Automated Aqua-Hydroponics System Using Arduino, Plc and IoT

Promotion of soil-less organic horticulture farming practices in small and large scale markets. The promotion is done in the traditional way of aquaponics or hydroponics as a separate farming technique. The combination of this technique with the help of automation in a single system will promote high reach in the development of organic horticulture farming. The automation is done with the help of Arduino for small-scale purposes and PLC for large-scale purposes. IoT is used for displaying the necessary parameters of the system

Automated Aqua-Hydroponics System Using Arduino, Plc and IoT

79-84Promotion of soil-less organic horticulture farming practices in small and large scale markets. The promotion is done in the traditional way of aquaponics or hydroponics as a separate farming technique. The combination of this technique with the help of automation in a single system will promote high reach in the development of organic horticulture farming. The automation is done with the help of Arduino for small-scale purposes and PLC for large-scale purposes. IoT is used for displaying the necessary parameters of the system