BMO-KMO-2020-4-14.pdf (1.15 MB)
Direct integration of cold sintered, temperature-stable Bi2Mo2O9-K2MoO4 ceramics on printed circuit boards for satellite navigation antennas
journal contribution
posted on 2020-04-28, 09:15 authored by Dawei Wang, Beatia Siame, Shiyu Zhang, Ge Wang, Xingshen Ju, Jinglei Li, Zhilun Lu, J. C. Vardaxoglou, William WhittowWilliam Whittow, Darren Cadman, Shikuan Sun, Di Zhou, Kaixin Song, Ian M ReaneyBi2Mo2O9-K2MoO4 (BMO-KMO) composite ceramics with >95% theoretical density were densified by cold sintering at 150 °C. XRD, Raman, back-scattered SEM and EDX spectroscopy indicated that the BMO and KMO phases coexisted in all composites without inter-diffusion and secondary phases. Temperature coefficient of resonant frequency with near-zero value ∼ -1 ppm/°C was acheived for BMO-10%KMO with pemittivity ∼ 31 and quality factor ∼ 3,000 GHz. Cold-sintered composite ceramics were directly pressed/integrated onto a printed circuit board (PCB) using the Cu metallisation as a ground plane for the design and fabrication of a circularly polarized microstrip patch antenna suitable for satellite navigation systems which achieved efficiencies 87% at 1561 MHz (BeiDou) and 88% at 1575 MHz (GPS/Galileo). The low cost, low energy integration of temperature stable, cold sintered ceramics directly onto a PCB represents a step change in substrate fabrication technology for RF devices.
Funding
EPSRC (SUbST: EP/L017563/1, SYMETA: EP/N010493/1).
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Journal of the European Ceramic SocietyVolume
40Issue
12Pages
4029 - 4034Publisher
Elsevier BVVersion
- AM (Accepted Manuscript)
Rights holder
© Elsevier LtdPublisher statement
This paper was accepted for publication in the journal Journal of the European Ceramic Society and the definitive published version is available at https://doi.org/10.1016/j.jeurceramsoc.2020.04.025.Acceptance date
2020-04-16Publication date
2020-04-21Copyright date
2020ISSN
0955-2219Publisher version
Language
- en
Depositor
Dr Shiyu Zhang. Deposit date: 26 April 2020Usage metrics
Categories
No categories selectedLicence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC