ORCID
- Patrick McEvoy: 0000-0002-0332-2879
Abstract
Precision is a crucial requirement in indoor localization, and the industrial sector increasingly demands technologies that provide both high accuracy and low cost. This work presents a hardware-based evaluation of dual-antenna arrays using an IEEE 802.15.4z-compliant UWB angle of arrival (AoA) development kit to assess antenna performance in terms of phase difference of arrival (PDoA)/AoA linearity. Four antenna types: 1) printed monopole; 2) CPW-fed slot; 3) stacked dielectric resonator antenna (DRA); and 4) dual-layer microstrip patch are evaluated on channels 5 and 9, with measurements performed in a calibrated anechoic chamber under controlled conditions. The results show that wide beamwidth with stable realized gain and antenna array inter-element spacing (d) have a greater influence on AoA performance than isolation alone. The outcomes offer practical antenna-design guidance for improving AoA robustness in compact, low-cost UWB positioning platforms.
Keywords
Angle of arrival (AoA), antenna arrays, indoor localization, Internet of Things (IoT), phase difference of arrival (PDoA), printed circuit board (PCB)-integrated antennas, ultra-wideband (UWB)
Publication Date
2026-01-01
Publication Title
IEEE Transactions on Instrumentation and Measurement
Volume
75
ISSN
0018-9456
Deposit Date
2026-09-04
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Additional Links
Recommended Citation
Hokmabadi, Hossein Raghib; Ur Rehman Khan, Wasi; McEvoy, Patrick; and James Ammann, Max, "Influence of Beamwidth, Gain Stability, and Antenna Element Spacing on AoA Accuracy in IEEE 802.15.4z UWB Systems" (2026). Research Outputs: 2025-Present. 25.
https://arrow.tudublin.ie/engschelero/25