BaTi4O9/Ba2Ti9O20-based ceramics resurrected for modern microwave applications

Abstract

Ceramics based on BaTi 4 O 9 and Ba 2 Ti 9 O 2 0 have been largely ignored over the past decade by manufacturers of high Q, high dielectric constant, temperature compensated materials for commercial wireless communications at elevated frequencies. When processed correctly, these ceramics yield properties that rival if not exceed those of ZrTiO 4 -based products currently used. Materials incorporating ZnO/Me 2 O 5 (Me = Ta, Nb) and their properties are described.