2025-12-19
Dual-Mode BaTiO3 Ceramic Filter with Gold-Copper Metallization
By
Progress In Electromagnetics Research M, Vol. 136, 86-94, 2025
Abstract
In the design and fabrication of ceramic filters, the quality of metallization is crucial to minimize resistive losses and ensure optimal resonator performance. This work presents the design and fabrication of a monoblock dual-mode filter with two distinct types of couplings, based on barium titanate (BaTiO3) ceramics, operating at S-band frequencies. Sputtering deposition was used to create a 5 nm gold seed layer, on which a 30 μm copper metallization was grown through electroplating. This method guarantees high conductivity in the resonator coating, and test results demonstrated that the fabricated device offers very good filtering performance with a minimal insertion loss of 0.57 dB.
Citation
Víctor Daniel Vazquez Pereira, Marcelo E. Chávez, Sebastián Murcia, Jordi Verdú Tirado, and Pedro de Paco, "Dual-Mode BaTiO3 Ceramic Filter with Gold-Copper Metallization," Progress In Electromagnetics Research M, Vol. 136, 86-94, 2025.
doi:10.2528/PIERM25100601
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