Premium
Implementation of Ba 0.6 Sr 0.4 TiO 3 ‐ZnO‐B 2 O 3 based tunable microwave phase shifters in LTCC technology
Author(s) -
Kohler Christian,
Nikfalazar Mohammad,
Heunisch Andreas,
Schulz Bärbel,
Mikolajek Morten,
Rabe Torsten,
Jakoby Rolf,
Binder Joachim R.
Publication year - 2017
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12687
Subject(s) - materials science , microwave , dielectric , metal , optoelectronics , phase shift module , metal insulator metal , insulator (electricity) , composite number , phase (matter) , ceramic , composite material , electrical engineering , capacitor , insertion loss , metallurgy , telecommunications , voltage , chemistry , organic chemistry , computer science , engineering
Tunable dielectric Ba 0.6 Sr 0.4 TiO 3 ‐ZnO‐B 2 O 3 thick‐films were analyzed regarding their integration potential into the LTCC technology. Therefore, tunable loaded line phase shifters based on metal‐insulator‐metal varactors with single‐ and double‐printed BST thick‐films were fabricated and co‐sintered inside a four layer LTCC module. Microstructural and chemical investigations showed a sufficient compatibility and adhesion between the silver, BST composite and LTCC layers and a resulting morphology depending on the processing route. The microwave characterization of the LTCC ‐embedded phase shifters revealed comparable results to phase shifters with the same design on alumina substrates.