Microwave dielectric ceramic composition and a process for the preparation thereof
OwnerNaseemabeevi Jawahar Isuhak, Thomas Sebastian Mailadilinventors
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Abstract
The present invention discloses a novel microwave dielectric composition of the general formula 5AO-2B2O5 wherein A=Ba, Sr, Ca, Mg or Zn and B=Nb or Ta, and a process for the preparation thereof In one embodiment of the invention, the dielectric constant is in the range 11±1 to 42±1, quality factor—frequency in the range 2000 and 88,000 and temperature coefficient of resonant frequency in the range +140±7 and −73±5 ppm/° C.
Claims17
A microwave dielectric composition of a general formula 5AO-2B2O5 wherein A=Ba, Sr, Ca, Mg or Zn and B=Nb or Ta.
The microwave dielectric composition of any of the preceding claims with opposite τf values to tune the τf to near to zero values.
A process for the preparation of microwave dielectric composition of formula 5AO-2B2O5 wherein A=Ba, Sr, Ca or Mg, Zn;
- B=Nb or Ta, said process comprising reacting a coarbonate or oxide of A with a pentoxide of B.
Dependencies are inferred from the claim text.