Thread Sensor Node v1r1 - Antenna Impedance Matching

Overview

Achieving reliable wireless performance in compact IoT devices requires antenna designs that account not only for simulation results but also for the real-world effects of PCB materials, manufacturing tolerances, component placement, and enclosure interactions. This project focused on the characterization and optimization of a 2.4 GHz PCB antenna through measurement-driven analysis and RF tuning.

That analysis turned an underperforming 2.4 GHz antenna into a tunable RF design input, giving the sensor-node platform a clear path toward stable on-board wireless performance.

Key Contributions:

• Characterization and optimization of a 2.4 GHz PCB antenna for embedded IoT applications
• Investigation of resonance shifts caused by PCB properties, layout effects, and environmental influences
• Identification and evaluation of key antenna geometry parameters affecting RF performance
• Correlation of measured results with design expectations to guide iterative optimization