A comparative study: Received signal strength based zone differentiation using mobile transmitters

摘要

This paper conducts a comparative study for zone differentiation techniques using two types of linearly polarized directional antennas. The antenna types are microstrip single patch and microstrip array patch. We employed array patch antenna with three elements in a previous work to track and identify hospital staff who approach patient's bed space. However, there was an inaccuracy in detection due to radiation overlapping and interference. An investigation was carried out using three single patch antennas by sweeping over the separating distance and orientation. The study concluded that the optimal separation between two adjacent antennas is 12 cm, and orientations of the right, center, and left antennas are 30°, 90°, and -30°, respectively. This configuration has resulted in 100% accuracy for zone differentiation.