Ultra-high dielectric constant garnet
AssigneeSkyworks Solutions, Inc.
InventorsDavid Bowie Cruickshank, Michael David Hill
Life of this patent
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Abstract
Disclosed are embodiments of synthetic garnet materials for use in radiofrequency applications. In some embodiments, increased amounts of bismuth can be added into specific sites in the crystal structure of the synthetic garnet in order to boost certain properties, such as the dielectric constant and magnetization. Accordingly, embodiments of the disclosed materials can be used in high frequency applications, such as in base station antennas.
Claims22
A ceramic material configured for radiofrequency applications, the ceramic material comprising:
- a yttrium iron garnet crystal structure;
- bismuth substituted into the crystal structure for at least some of the yttrium;
- praseodymium, neodymium, samarium, dysprosium, ytterbium, or holmium substituted into the crystal structure for at least some of the yttrium;
- and
- Ca or Zr substituted into the crystal structure for at least some of the yttrium.
A method of manufacturing a ceramic material, the method comprising:
- providing a yttrium iron garnet crystal structure;
- substituting bismuth into the crystal structure for at least some of the yttrium;
- substituting praseodymium, neodymium, samarium, dysprosium, ytterbium, or holmium into the crystal structure for at least some of the yttrium;
- and
- substituting Ca or Zr into the crystal structure for at least some of the yttrium.
A radiofrequency device comprising:
- a component formed from a ceramic having a yttrium iron garnet crystal structure;
- bismuth substituting into the crystal structure for at least some of the yttrium;
- praseodymium, neodymium, samarium, dysprosium, ytterbium, or holmium substituting into the crystal structure for at least some of the yttrium;
- and
- Ca or Zr substituting into the crystal structure for at least some of the yttrium.
Dependencies are inferred from the claim text.