Nowadays, more and more wireless devices use the ISM frequency (for example 433 MHz frequency) radio signals to communicate. In my thesis I describe the radio propagation models found in the literature and I show the limitation of the applications of the radio propagation models. I present the parameters which influence the radio propagation and I examine the pros and cons of the different types of antennas.
In my thesis I design and execute various radio propagation measurements, in order to show the characteristics of the 433 MHz frequency radio communication system.
To perform the measurement I must implement an application which is able to show the properties of the radio propagation (for example RSSI value). The measurement is carried out in several locations. I collate the the different measured values from the differnt locations and also I compare the results with the radio propagation values.
Based on the several measurements I also examine the behavior of the several antenna types.