Kadera, Petr ; Sanchez-Pastor, Jesus ; Eskandari, Hossein ; Tyc, Tomas ; Sakaki, Masoud ; Schüßler, Martin ; Jakoby, Rolf ; Benson, Niels ; Jimenez-Saez, Alejandro ; Lacik, Jaroslav (2022):
Wide-Angle Ceramic Retroreflective Luneburg Lens Based on Quasi-Conformal Transformation Optics for Mm-Wave Indoor Localization. (Publisher's Version)
In: IEEE Access, 10, pp. 41097-41111. IEEE, e-ISSN 2169-3536,
DOI: 10.26083/tuprints-00021395,
[Article]
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Wide-Angle_Ceramic_Retroreflective_Luneburg_Lens_Based_on_Quasi-Conformal_Transformation_Optics_for_Mm-Wave_Indoor_Localization.pdf Copyright Information: CC BY 4.0 International - Creative Commons, Attribution. Download (3MB) |
| Item Type: | Article |
|---|---|
| Origin: | Secondary publication via sponsored Golden Open Access |
| Status: | Publisher's Version |
| Title: | Wide-Angle Ceramic Retroreflective Luneburg Lens Based on Quasi-Conformal Transformation Optics for Mm-Wave Indoor Localization |
| Language: | English |
| Abstract: | This paper presents a quasi-conformal transformation optics (QCTO) based three-dimensional (3D) retroreflective flattened Luneburg lens for wide-angle millimeter-wave radio-frequency indoor localization. The maximum detection angle and radar cross-section (RCS) are investigated, including an impedance matching layer (IML) between the lens antenna and the free-space environment. The 3D QCTO Luneburg lenses are fabricated in alumina by lithography-based ceramic manufacturing, a 3D printing process. The manufactured structures have a diameter of 29.9 mm ( 4λ0 ), showing a maximum realized gain of 16.51 dBi and beam steering angle of ±70° at 40 GHz. The proposed QCTO Luneburg lens with a metallic reflective layer achieves a maximum RCS of −20.05 dBsqm at 40 GHz with a wide-angle response over ±37°, while the structure with an IML between the lens and air improves these values to a maximum RCS of −15.78 dBsqm and operating angular response between ±50°. |
| Journal or Publication Title: | IEEE Access |
| Volume of the journal: | 10 |
| Place of Publication: | Darmstadt |
| Publisher: | IEEE |
| Classification DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Divisions: | 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Microwave Engineering |
| Date Deposited: | 18 May 2022 12:10 |
| Last Modified: | 18 Aug 2022 13:04 |
| DOI: | 10.26083/tuprints-00021395 |
| Corresponding Links: | |
| URN: | urn:nbn:de:tuda-tuprints-213950 |
| Additional Information: | INDEX TERMS: Transformation optics, Luneburg lens, impedance matching, lens antenna, retroreflector, ceramic 3D printing, indoor localization, mm-wave, artificial dielectrics, chipless RFID |
| URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/21395 |
| PPN: | 494867450 |
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