- https://doi.org/10.1109/icmnwc66779.2025.11354280
Circular Patch Antenna using PIN Diode Switch for WSN Application
- Dec 10, 2025
- P Kishor Kumar +4 more
In this paper, the design of a small-size and reconfigurable circular patch antenna is introduced for Wireless Sensor Network (WSN) applications with PIN diode switches to achieve frequency agility. The effective current path on the radiating patch is changed by switching ON/OFF the states of some select PIN diodes, and the antenna is switched among several resonant frequencies without modifying any physical dimensions. The antenna design was simulated in ANSYS HFSS, and its performance analyzed in relation to return loss, bandwidth, and radiation pattern. The simulated results for the antenna demonstrate that it has a return loss of below - 10 dB in the selected frequency bands, with consistent radiation characteristics, and can therefore be well suited for low-power adaptive WSN nodes which require reliable multiband communication and minimized hardware complexity.
