Additive manufacturing of monolithic microwave dielectric ceramic filters via digital light processing.pdf (2.9 MB)
Additive manufacturing of monolithic microwave dielectric ceramic filters via digital light processing
journal contribution
posted on 2023-06-09, 19:09 authored by Qingrong Liu, Mingbo Qiu, Lida Shen, Chen Jiao, Yun Ye, Deqiao Xie, Chang WangChang Wang, Meng Xiao, Jianfeng ZhaoMicrowave dielectric ceramics are employed in filters as electromagnetic wave propagation media. Based on additive manufacturing (AM) techniques, microwave dielectric ceramic filters with complex and precise structures can be fabricated to satisfy filtering requirements. Digital light processing (DLP) is a promising AM technique that is capable of producing filters with high accuracy and efficiency. In this paper, monolithic filters made from Al2O3 and TiO2, with a molar ratio of 9:1 (0.9 Al2O3-0.1 TiO2), were fabricated by DLP. The difference in the dielectric properties between the as-sintered and post-annealed samples at different temperatures was studied. The experimental results showed that when sintered at 1550 °C for 2 h and post annealed at 1000 °C for 5 h, 0.9 Al2O3-0.1 TiO2 exhibited excellent dielectric properties: er = 12.4, Q × f = 111,000 GHz, tf = +1.2 ppm/°C. After comparing the measured results with the simulated ones in the passband from 6.5 to 9 GHz, it was concluded that the insertion loss (IL) and return loss (RL) of the filter meet the design requirements.
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Publication status
- Published
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- Published version
Journal
ElectronicsISSN
2079-9292External DOI
Issue
10Volume
8Article number
a1067Department affiliated with
- Engineering and Design Publications
Research groups affiliated with
- Dynamics, Control and Vehicle Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2019-09-30First Open Access (FOA) Date
2019-09-30First Compliant Deposit (FCD) Date
2019-09-25Usage metrics
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