US 11,699,836 B2
Low firing temperature dielectric materials designed to be co-fired with high bismuth garnet ferrites for miniaturized isolators and circulators
Michael David Hill, Emmitsburg, MD (US); David Bowie Cruickshank, Rockville, MD (US); Jeffrey Alan Shunkwiler, Adamstown, MD (US); John Jianzhong Jiang, Leesburg, VA (US); David Martin Firor, Thurmont, MD (US); and Srinivas Polisetty, Frederick, MD (US)
Assigned to SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed by SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed on Jun. 20, 2019, as Appl. No. 16/446,877.
Claims priority of provisional application 62/687,984, filed on Jun. 21, 2018.
Prior Publication US 2019/0393579 A1, Dec. 26, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. H01P 1/36 (2006.01); H01B 3/12 (2006.01); H01F 1/03 (2006.01); H01P 1/38 (2006.01); C01G 31/02 (2006.01); C04B 35/495 (2006.01); C04B 37/00 (2006.01); H01F 1/34 (2006.01)
CPC H01P 1/36 (2013.01) [C01G 31/02 (2013.01); C04B 35/495 (2013.01); C04B 37/001 (2013.01); H01B 3/12 (2013.01); H01F 1/0315 (2013.01); H01F 1/346 (2013.01); H01P 1/38 (2013.01); C01P 2006/40 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/3225 (2013.01); C04B 2235/3232 (2013.01); C04B 2235/3239 (2013.01); C04B 2235/3298 (2013.01); C04B 2235/764 (2013.01); C04B 2235/765 (2013.01); C04B 2237/345 (2013.01); C04B 2237/84 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A composite material for use as a radiofrequency component comprising:
a low temperature fireable outer material, the low temperature fireable outer material having a garnet or scheelite structure; and
a high dielectric constant inner material located within the outer material, the high dielectric constant inner material having a dielectric constant above 30, the low temperature fireable outer material and the high dielectric constant inner material being configured to be co-fired together at a temperature between 650-900° C. to form an integrated magnetic/dielectric assembly without the use of adhesive or glue.