Design and Optimization of a Compact UWB Antenna for IoT Applications
Keywords:
UWB antenna, IoT applications, compact design, impedance bandwidth, partial ground plane, radiation pattern, antenna miniaturization, CST simulation, wireless sensor nodes, RF design.Abstract
The rise in IoT means that there is now a call for compact, low-profile, and high-performing antennas that can work with UWB wireless technology. This paper covers designing, testing, and optimizing a small UWB monopole antenna made for IoT devices. An FR4 substrate with a thickness of 1.6 mm is used for the proposed antenna, having a compact footprint of 18 mm × 20 mm. This antenna can work in a wide band of frequencies, from 3.1 GHz to 10.6 GHz. The ground plane is cut off partially, and the patch is given a bevel shape for better adjusting the impedance and expanding the bandwidth. CST Microwave Studio is used for parametric analysis and optimization to make return loss, gain, and radiation more stable. With a peak gain of 3.8 dBi and omnidirectional radiation, the optimized antenna is appropriately used in IoT sensors, smart wearables, and embedded systems. Simulation was compared with actual measurements on the antenna, which supported the effectiveness of the antenna in UWB-IoT systems.
