Radiation phase control system for a WIFI and BLUETOOTH antenna array using phase shifters
TL;DR
The system incorporates a phase shifting process to achieve beamforming, which improves signal strength in desired locations and reduces noise in undesired areas, and highlights the potential of this approach for use in smart homes, IoT devices, and other wireless communication systems that require flexible radiation patterns.
Abstract
This article presents a system for controlling the angle of sound and rapidly changing the radiation patterns of WiFi and Bluetooth antennas by modifying the phase shift in a patch antenna array. The system incorporates a phase shifting process to achieve beamforming, which improves signal strength in desired locations and reduces noise in undesired areas. This involves designing patch antennas with precise measurements, installing a control unit to adjust the phase shift, and testing their operation in both real and simulated environments. Measurements were made in a circular pattern, covering a 180- degree area with 30 points, at 6-degree intervals, in an anechoic chamber. A voltage of 3 V was used to determine the phase shift between measurements without a phase shifter. The results showed that without a phase shifter, a minimum value of -25.25 dB was found, while with the different voltages, a value of -25.29 dB was obtained at 3 V, indicating an approximate phase shift of 12 degrees compared to measurements without a phase shifter. The data show significant changes in signal coverage, power utilization, and an improvement in system performance. The findings highlight the potential of this approach for use in smart homes, IoT devices, and other wireless communication systems that require flexible radiation patterns.