Optimization of the conductivity of microwave components printed by inkjet and aerosol jet on polymeric substrates by IPL and laser sintering

Autor: Serge Verdeyme, Chaimaa El Hajjaji, Olivier Durand, Laurence Boyer, Malgorzata Anna Piechowiak, Nicolas Delhote
Přispěvatelé: Systèmes RF (XLIM-SRF), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Centre de Transfert de Technologies Céramiques (CTTC), CTTC
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: International Journal of Microwave and Wireless Technologies
International Journal of Microwave and Wireless Technologies, Cambridge University Press/European Microwave Association 2021, 13 (7), pp.652-662. ⟨10.1017/S175907872100043X⟩
ISSN: 1759-0787
1759-0795
DOI: 10.1017/S175907872100043X⟩
Popis: In this work, microwave planar resonators are printed with silver nanoparticle inks using two printing technologies, inkjet printing and aerosol jet printing, on polyimide substrates. The microwave resonators used in this paper operate in the frequency band 5–21 GHz. The printing parameters, such as the number of printed layers of silver nanoparticle inks, drop spacing, and sintering time, were optimized to ensure repeatable and conductive test patterns. To improve the electrical conductivity of silver deposits, which are first dried using a hot plate or an oven, two complementary sintering methods are used: intense pulsed light (IPL) and laser sintering. This paper presents the results of different strategies for increasing the final quality factor of printed planar resonators and the trade-offs (sintering time versus final conductivity/unloaded Q) that can be reached. Improvement of the resonator unloaded quality factor (up to +55%) and of the equivalent electrical conductivity (up to 14.94 S/μm) at 14 GHz have been obtained thanks to these nonconventional sintering techniques. The total sintering durations of different combinations of sintering techniques (hot plate, oven, IPL, and laser) range from 960 to 90 min with a final conductivity from 14.94 to 7.1 S/μm at 14 GHz, respectively.
Databáze: OpenAIRE