Abstract On this challenge we use the idea of RFID (Radio Frequency Identification), which is storage and information recuperation methodology. This method use units called tags RFID for the identification. This RFID tags incorporate antennas to let to receive and to reply radiofrequency requests from a RFID transmitter-receiver. The fundamental function of the RFID technology is to transmit the id of an object by way of radio waves. Primarily what we need to do is an antenna primarily based sensing, which means use the antennas properties like a sensor. The proposal is a way for utilizing the changes in the response of the 2.Four GHz antenna as a sensing mechanism. We use the Wireless Identification and Sensing Platform (WISP), which is a computational sensing and programmable platform with out battery designed to analyze in improving sensor RFID applications. WISP can operate utilizing power transmitted from a (UHF) RFID reader located at lengthy range and also talk data in a single response packet. The objective of this undertaking lies in analyzing the efficiency of a microwave antenna performing as occupancy sensor. How to find out when an object is positioned above the antenna has many functions in our society. One of the utilities is the detection of parking areas obtainable in the road, but there are so many others. To realize these goals we first will make some voltage measurements of what is capture by the antenna by placing an envelope detector getpocket.com after it after which we are going to simulate its conduct with Advertisements and HFSS simulation. We may also use the MSP430 microchip to learn the DC voltage after the antenna and finally we are going to create an application with the Microsoft Visual Studio to plot the results graphically and eventually we draw our conclusions. Analyzing the outcomes we can say that we have now reached satisfactory conclusions.