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Retro-reflective Antenna Design for ISAC

Niazi, Yuneeb LU and Peltola, Vanessa (2025) EITM02 20251
Department of Electrical and Information Technology
Abstract
The emergence of 6G technology represents a pivotal milestone in telecommunications and device connectivity, transforming a new era for wireless systems, particularly for Internet of Things (IoT) and extended reality (XR) applications. This Master’s thesis investigates the design implementations of Van Atta arrays---passive antenna systems designed to redirect (rather than reflect) incoming signals back toward their source. These arrays serve two main applications. The first prototype features a 4x4 antenna array targeting the 28 GHz frequency band, intended for use in zero-energy (ZE) IoT devices. The second prototype, also a 4x4 antenna array, is designed to operate at 60 GHz and aims to improve gesture recognition and localization in... (More)
The emergence of 6G technology represents a pivotal milestone in telecommunications and device connectivity, transforming a new era for wireless systems, particularly for Internet of Things (IoT) and extended reality (XR) applications. This Master’s thesis investigates the design implementations of Van Atta arrays---passive antenna systems designed to redirect (rather than reflect) incoming signals back toward their source. These arrays serve two main applications. The first prototype features a 4x4 antenna array targeting the 28 GHz frequency band, intended for use in zero-energy (ZE) IoT devices. The second prototype, also a 4x4 antenna array, is designed to operate at 60 GHz and aims to improve gesture recognition and localization in radar systems for XR environments. In order to enable ON-OFF keying (OOK) on the retro-reflected signals, a switching capability using resistive loads on the Van Atta array is evaluated. This thesis presents the design methodology, evaluates simulated performance, and also discusses practical design considerations and fabrication constraints for both frequency bands. By considering metrics such as the monostatic radar cross section (RCS), the designed Van Atta arrays showed the ability to retro-reflect signals for a wide range of angles, as well as the ability to switch the retro-reflection on and off. (Less)
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author
Niazi, Yuneeb LU and Peltola, Vanessa
supervisor
organization
course
EITM02 20251
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Van Atta Arrays, Antenna, ISAC, retro-reflective, retroreflective, antenna arrays, Patch antenna, arrays, XR, RCS, Van atta, mmWave, millimeter wave, 28 GHz, 60 GHz
report number
LU/LTH-EIT 2025-1085
language
English
id
9207618
date added to LUP
2025-07-03 12:49:16
date last changed
2025-07-07 15:20:06
@misc{9207618,
  abstract     = {{The emergence of 6G technology represents a pivotal milestone in telecommunications and device connectivity, transforming a new era for wireless systems, particularly for Internet of Things (IoT) and extended reality (XR) applications. This Master’s thesis investigates the design implementations of Van Atta arrays---passive antenna systems designed to redirect (rather than reflect) incoming signals back toward their source. These arrays serve two main applications. The first prototype features a 4x4 antenna array targeting the 28 GHz frequency band, intended for use in zero-energy (ZE) IoT devices. The second prototype, also a 4x4 antenna array, is designed to operate at 60 GHz and aims to improve gesture recognition and localization in radar systems for XR environments. In order to enable ON-OFF keying (OOK) on the retro-reflected signals, a switching capability using resistive loads on the Van Atta array is evaluated. This thesis presents the design methodology, evaluates simulated performance, and also discusses practical design considerations and fabrication constraints for both frequency bands. By considering metrics such as the monostatic radar cross section (RCS), the designed Van Atta arrays showed the ability to retro-reflect signals for a wide range of angles, as well as the ability to switch the retro-reflection on and off.}},
  author       = {{Niazi, Yuneeb and Peltola, Vanessa}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Retro-reflective Antenna Design for ISAC}},
  year         = {{2025}},
}