LIQUID LEVEL SENSOR USING RF

Abstract

A new radio frequency sensor prototype based on coherent super-heterodyne architecture, have been developed using Hybrid Microwave Integrated Circuits (HMICs) for various applications such as profiling the surface and sub-surface of pavements, detecting and localizing small buried anti-personal mines and measuring the level of liquid in tank. This sensor meet the requirement of small size, self-sufficient, light weight, good accuracy, fine resolution, and deep penetration. For this purpose a transceiver system is designed which consists of an oscillator, an up-conversion and a down-conversion type balanced mixer, a power divider, an array of patch antennas. Entire system is designed using Advanced Designing System and HFSS. The report illustrates the simulated & measured results along with their analysis.