The present invention relates to electronically tunable dielectric materials which have favorable properties for many applications, including the area of radio frequency (RF) engineering and design. The electronically tunable materials include an electronically tunable dielectric phase such as barium...http://www.google.de/patents/US6514895?utm_source=gb-gplus-sharePatent US6514895 - Electronically tunable ceramic materials including tunable dielectric and metal silicate phases
