Szczegóły publikacji
Opis bibliograficzny
Microstrip antennas on 3D-printed magneto-dielectric substrates: fabrication and efficiency study / Constantine Kakoyiannis, Jakub SOROCKI, Ilona PIEKARZ, Matthias Geissler // International Journal of Microwave and Wireless Technologies ; ISSN 1759-0787. — 2023 — vol. 15 iss. 8 spec. iss., s. 1412–1423. — Bibliogr. s. 1421–1422, Abstr. — Publikacja dostępna online od: 2023-02-23
Autorzy (4)
- Kakoyiannis Constantine
- AGHSorocki Jakub
- AGHPiekarz Ilona Kinga
- Geissler Matthias
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 151725 |
|---|---|
| Data dodania do BaDAP | 2024-02-07 |
| Tekst źródłowy | URL |
| DOI | 10.1017/S1759078723000041 |
| Rok publikacji | 2023 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | International Journal of Microwave and Wireless Technologies |
Abstract
Magneto-dielectric antennas (MDAs) provide small sizes, enhanced bandwidths, and frequency/polarization agility. We describe the fabrication and efficiency characterization at 0.4-0.8 GHz of five microstrip MDAs, whose gradually thicker substrates were 3D-printed using an off-the-shelf polylactic acid (PLA) filament doped with ferromagnetic particles. It was experimentally discovered that efficiency increases monotonically from 12% (-9.2 dB) to 37% (-4.3 dB) as substrate thickness goes from 1.6 to 4.3 mm; the rate is faster than expected for microstrip antennas. Numerical analysis indicated that the apparent magnetic loss tangent of the MD substrate experiences a threefold decrease as the 3D printer deposits more layers of iron-doped PLA. The MDAs exhibit radiation quality factors that are 3.7-7.2 times better than the dielectric counterparts. Moreover, a simple optimization of ground plane size could increase efficiency to 55% (-2.6 dB). The reduction in magnetic loss is attributed to a reduction in eddy current loss due to the separation of agglomerate iron particles. Therefore, despite the inherently lossy material used, the potential of 3D-printed MD substrates in providing acceptable antenna efficiencies is demonstrated together with unprecedented design freedom and fabrication flexibility.
