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Co-firing of low firing temperature dielectric materials with high bismuth garnet ferrites for miniaturized isolators and circulators
A method of forming a composite material for use as an isolator or circulator in a radiofrequency device comprises providing a low temperature fireable outer material, the low fireable outer material having a garnet or scheelite structure, inserting a high dielectric constant inner material having a dielectric constant above 30 within an aperture in the low temperature fireable outer material, and co-firing the lower temperature fireable outer material and the high dielectric constant inner material together at temperature between 650-900° C. to shrink the low temperature fireable outer material around an outer surface of the high dielectric constant inner material to form an integrated magnetic/dielectric assembly without the use of adhesive or glue.
Co-firing of low firing temperature dielectric materials with high bismuth garnet ferrites for miniaturized isolators and circulators
A method of forming a composite material for use as an isolator or circulator in a radiofrequency device comprises providing a low temperature fireable outer material, the low fireable outer material having a garnet or scheelite structure, inserting a high dielectric constant inner material having a dielectric constant above 30 within an aperture in the low temperature fireable outer material, and co-firing the lower temperature fireable outer material and the high dielectric constant inner material together at temperature between 650-900° C. to shrink the low temperature fireable outer material around an outer surface of the high dielectric constant inner material to form an integrated magnetic/dielectric assembly without the use of adhesive or glue.
Co-firing of low firing temperature dielectric materials with high bismuth garnet ferrites for miniaturized isolators and circulators
HILL MICHAEL DAVID (author) / CRUICKSHANK DAVID BOWIE (author) / SHUNKWILER JEFFREY ALAN (author) / JIANG JOHN JIANZHONG (author) / FIROR DAVID MARTIN (author) / POLISETTY SRINIVAS (author)
2024-03-19
Patent
Electronic Resource
English
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