Yuping Ji
Cold sintered, temperature-stable CaSnSiO5-K2MoO4 composite microwave ceramics and its prototype microstrip patch antenna
Ji, Yuping; Song, Kaixin; Zhang, Shiyu; Lu, Zhilun; Wang, Ge; Li, Linhao; Zhou, Di; Wang, Dawei; Reaney, Ian M.
Authors
Kaixin Song
Shiyu Zhang
Zhilun Lu
Ge Wang
Linhao Li
Di Zhou
Dawei Wang
Ian M. Reaney
Abstract
Dense (1-x)wt%CaSnSiO5-xwt%K2MoO4 (CSSO-KMO) composite ceramics were fabricated by the cold sintering process at 180 °C under 400 MPa for 60 min. X-ray diffraction, Energy dispersive X-ray and Raman spectroscopy confirmed that CSSO and KMO coexisted without intermediate phases. As KMO weight fraction increased, relative permittivity (εr) and temperature coefficient of resonant frequency (τf) decreased and the microwave quality factor (Q×f, where f is resonant frequency) increased. Near-zero τf (-0.5 ppm/°C) was obtained for 65 wt%CSSO-35 wt%KMO with εr ∼ 9.2 and Q×f ∼ 6240 GHz. No chemical reaction between ceramic composites and silver was observed, demonstrating potential for cofiring with Ag-paste. A prototype antenna was fabricated from 65 wt%CSSO-35 wt%KMO composite ceramic with a bandwidth of 144 MHz @ -10 dB, a gain of 5.7 dBi and a total efficiency of 88.4 % at 5.2 GHz, suitable for 5 G mobile communication systems.
Citation
Ji, Y., Song, K., Zhang, S., Lu, Z., Wang, G., Li, L., Zhou, D., Wang, D., & Reaney, I. M. (2021). Cold sintered, temperature-stable CaSnSiO5-K2MoO4 composite microwave ceramics and its prototype microstrip patch antenna. Journal of the European Ceramic Society, 41(1), 424-429. https://doi.org/10.1016/j.jeurceramsoc.2020.08.053
| Journal Article Type | Article |
|---|---|
| Acceptance Date | Aug 22, 2020 |
| Online Publication Date | Aug 25, 2021 |
| Publication Date | 2021-01 |
| Deposit Date | Oct 23, 2021 |
| Journal | Journal of the European Ceramic Society |
| Print ISSN | 0955-2219 |
| Publisher | Elsevier |
| Peer Reviewed | Peer Reviewed |
| Volume | 41 |
| Issue | 1 |
| Pages | 424-429 |
| DOI | https://doi.org/10.1016/j.jeurceramsoc.2020.08.053 |
| Keywords | Microwave dielectric, Cold sintering process, Microstrip patch antenna |
| Public URL | http://researchrepository.napier.ac.uk/Output/2815791 |