Publication detail

Sub-THz Luneburg Lens Enabled Wide-Angle Frequency-Coded Identification Tag for Passive Indoor Self-Localization

KADĚRA, P. SÁNCHEZ-PASTOR, J. SCHMITT, L. SCHÜßLER, M. JAKOBY, R. HOFMANN, M. JIMÉNEZ-SÁEZ, A. LÁČÍK, J.

Original Title

Sub-THz Luneburg Lens Enabled Wide-Angle Frequency-Coded Identification Tag for Passive Indoor Self-Localization

Type

journal article in Web of Science

Language

English

Original Abstract

An earlier version of this paper was presented at the 2021 15th European Conference on Antennas and Propagation (EuCAP) and was published in its Proceedings [1]. This paper describes a design, fabrication, and characterization of a planar frequency-coded retroreflector for indoor localization. The retroreflector is fabricated in high-resistive silicon (HR-Si) and consists of a Luneburg lens antenna and a photonic crystal (PhC) high-Q resonator reflective layer, providing ranging and identification within the same tag and bandwidth. The Luneburg lens antenna presents a measured gain of 21.63 dBi at a design frequency 240 GHz. The frequency-coded retroreflector allows for ranging in a continuous 130 degree angular range in azimuthal plane, with a discrete but repeatable 2-resonance identification over multiples of 15 degree. Its maximum measured radar-cross section (RCS) is -23.48 dBsqm at a frequency of 240 GHz. The retroreflective tag set in ideal line-of-sight (LoS) situation is compared to a non-line-of-sight (NLoS) arrangement showing the influence of a metallic rod as an obstacle on the overall tag detection parameters. Finally, the successful read-out of the retroreflective tag is discussed in unknown environments, where no a-priori information is available.

Keywords

lens antenna; high-Q resonators; retroreflector; photonic crystal; chipless RFID

Authors

KADĚRA, P.; SÁNCHEZ-PASTOR, J.; SCHMITT, L.; SCHÜßLER, M.; JAKOBY, R.; HOFMANN, M.; JIMÉNEZ-SÁEZ, A.; LÁČÍK, J.

Released

13. 5. 2022

Publisher

Cambridge University Press

Location

Cambridge, Great Britain

ISBN

1759-0795

Periodical

International Journal of Microwave and Wireless Technologies

Year of study

15

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

59

Pages to

73

Pages count

15

URL

https://www.cambridge.org/core/journals/international-journal-of-microwave-and-wireless-technologies/article/abs/subthz-luneburg-lens-enabled-wideangle-frequencycoded-identification-tag-for-passive-indoor-selflocalization/95551F7E3728346CF8EA04290000A7E8

BibTex

@article{BUT177736,
  author="Petr {Kaděra} and Jesús {Sánchez-Pastor} and Lisa {Schmitt} and Martin {Schüßler} and Rolf {Jakoby} and Martin {Hofmann} and Alejandro {Jiménez-Sáez} and Jaroslav {Láčík}",
  title="Sub-THz Luneburg Lens Enabled Wide-Angle Frequency-Coded Identification Tag for Passive Indoor Self-Localization",
  journal="International Journal of Microwave and Wireless Technologies",
  year="2022",
  volume="15",
  number="1",
  pages="59--73",
  doi="10.1017/S175907872200054X",
  issn="1759-0795",
  url="https://www.cambridge.org/core/journals/international-journal-of-microwave-and-wireless-technologies/article/abs/subthz-luneburg-lens-enabled-wideangle-frequencycoded-identification-tag-for-passive-indoor-selflocalization/95551F7E3728346CF8EA04290000A7E8"
}