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Abstract The present investigation relates ceramics with a temperature-stable high dielectric constant and low dielectric loss, suitable for use in dielectric resonators in an SHF band. A small amount of Mn addition not only favorably affects sinterbility of ceramics but also advantageously heightens the unloaded Q. A value of Q higher than l04 is obtained in 10 GHz band.
Shōichiro Nomura (Tue,) studied this question.