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Title:
MICROWAVE FERRITE MATERIAL FOR MINIATURIZED CIRCULATOR, AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/124087
Kind Code:
A1
Abstract:
Disclosed are a microwave ferrite material for a miniaturized circulator, and a preparation method therefor. The microwave ferrite material has a garnet structure as a main phase, and has a chemical formula as follows: Y3-aCaaZrbVcFe5-b-cO12. The preparation method comprises the following steps: (1) mixing raw materials according to a stoichiometric ratio to obtain a raw material mixture; (2) performing first wet ball milling on the raw material mixture to obtain a first slurry; (3) sequentially drying and pre-sintering the first slurry to obtain first powder; (4) performing second wet ball milling on the first powder to obtain a second slurry; (5) sequentially drying and granulating the second slurry to obtain second powder; and (6) sequentially forming and sintering the second powder to obtain a microwave ferrite material. According to the microwave ferrite material provided in the present application, the bandwidth of a miniaturized lumped circulator is widened so that the miniaturized lumped circulator meets 5G communication requirements; moreover, the device loss is reduced, and the communication quality is improved.

Inventors:
ZHANG LIKANG (CN)
WANG YUANZHEN (CN)
LV FEIYU (CN)
XU YI (CN)
Application Number:
PCT/CN2022/110192
Publication Date:
July 06, 2023
Filing Date:
August 04, 2022
Export Citation:
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Assignee:
HENGDIAN GROUP DMEGC MAGNETICS CO LTD (CN)
International Classes:
C04B35/26; C04B35/40; H01F1/34; H01P1/387
Foreign References:
CN114276129A2022-04-05
US6933799B12005-08-23
CN113651609A2021-11-16
CN102584200A2012-07-18
US20180016155A12018-01-18
Other References:
HUANG, YINYIN ET AL.: "Effects of Zr-substitution on Microstructure and Properties of YCaVIG Ferrites,", JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,, vol. 324, no. 6, 31 March 2012 (2012-03-31), pages 934 - 938, XP028122206, DOI: 10.1016/j.jmmm.2011.09.010
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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