公开(公告)号：US20240308916A1

公开(公告)日：2024-09-19

申请号：US18575267

申请日：2022-08-04

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Feiyu LV ,  Yuanzhen WANG ,  Likang ZHANG

IPC: C04B35/26 ,  C04B35/626 ,  C04B35/634 ,  C04B35/64 ,  H01F1/34 ,  H01P1/38

CPC classification number: C04B35/2641 ,  C04B35/6262 ,  C04B35/6264 ,  C04B35/62655 ,  C04B35/62675 ,  C04B35/6268 ,  C04B35/62695 ,  C04B35/63416 ,  C04B35/64 ,  H01F1/344 ,  C04B2235/3225 ,  C04B2235/3274 ,  C04B2235/3293 ,  C04B2235/3294 ,  C04B2235/3418 ,  C04B2235/442 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/604 ,  C04B2235/606 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/6585 ,  H01P1/38

Abstract: A microwave ferrite material for a third-order intermodulation circulator and a preparation method therefor, the chemical formula being Y3-aCaaSnaInbMncFe5-a-b-cO12, 0.1≤a≤0.3, 0.01≤b≤0.1, 0.001≤c≤0.1. The preparation method comprises the following steps: (1) weighing; (2) first ball milling; (3) drying and preheating; (4) second ball milling; (5) granulation; and (6) post-treatment. The microwave ferrite material reduces the intermodulation interference between combined signals, and further improves the performance of communication systems and the coverage and capacity of networks. At the same time, it is ensured that the stability and repeatability of the preparation process are maintained at a good level, being suitable for mass production applications.

公开(公告)号：US20250066255A1

公开(公告)日：2025-02-27

申请号：US18688335

申请日：2022-08-04

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Feiyu LV ,  Yuanzhen WANG ,  Likang ZHANG ,  Yi XU

IPC: C04B35/26 ,  C04B35/626 ,  C04B35/64 ,  H01F1/34 ,  H01F1/36 ,  H01P1/38

Abstract: Disclosed herein are a microwave ferrite material, a preparation method therefor and an application thereof. According to the microwave ferrite material, Y and Zr are partially replaced with Ca, Fe is partially replaced with Al, and the properties of Ca, Y, Zr, V, Al, and Fe are utilized to make the obtained microwave ferrite material have a proper saturation magnetization, ferromagnetic resonance linewidth, and Curie temperature. At the same time, by using a specific amount of V and Al to cooperatively add, it is ensured that the obtained microwave ferrite material has a loss of no more than 0.5 dB within a temperature range of −55° C. to 125° C. and a frequency band range of 700 MHz to 5 GHz, so that the microwave ferrite material has the characteristics of low loss, high Curie temperature, and low magnetic moment, and the requirements of miniaturization, low loss, and wide frequency of an isolator and a circulator can be realized.

公开(公告)号：US20240425416A1

公开(公告)日：2024-12-26

申请号：US18705830

申请日：2023-05-25

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Feiyu LV ,  Likang ZHANG

IPC: C04B35/26 ,  C04B35/626 ,  C04B35/63 ,  C04B35/64

Abstract: The present application discloses a preparation method for a low-line-width W-type hexagonal crystal system microwave ferrite material. The preparation method comprises: performing weighing, first ball milling treatment, drying, first sintering treatment, second ball milling treatment, granulation and molding, and second sintering treatment in sequence to obtain a low-line-width W-type hexagonal crystal system microwave ferrite material. According to the preparation method of the present application, a rare earth element Gd is employed to replace some Fe ions, appropriate saturation magnetization, remanence ratio and line width are obtained by using electromagnetic properties of Gd and Fe and compensation points, and the microstructure of the W-type hexagonal crystal system microwave ferrite material is improved by jointly adding appropriate quantities of low-melting-point fluxing agents Bi2O3, V2O5, SiO2 and ZnO, so that pores are reduced, the line width is decreased and the remanence ratio is increased. The preparation method has good process stability and good repeatability, and is suitable for mass production.

公开(公告)号：US20240067568A1

公开(公告)日：2024-02-29

申请号：US18263886

申请日：2021-06-30

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Yuanzhen WANG ,  Yangzhong DU ,  Likang ZHANG ,  Feiyu LV

IPC: C04B35/26 ,  C04B35/626 ,  C04B35/64

CPC classification number: C04B35/2641 ,  C04B35/6261 ,  C04B35/62655 ,  C04B35/62695 ,  C04B35/64

Abstract: A two-component microwave ferrite material, a preparation method therefor and an application thereof. The two-component microwave ferrite material comprises a first microwave ferrite material and a second microwave ferrite material. The preparation method comprises the following steps: (1) mixing a first microwave ferrite material and a second microwave ferrite material according to a formula amount, and then performing wet ball milling to obtain a ball abrasive; (2) drying the ball abrasive, sieving, and granulating; and (3) sequentially forming and sintering the granulated particles obtained in step (2) to obtain a two-component microwave ferrite material.

公开(公告)号：US20250059093A1

公开(公告)日：2025-02-20

申请号：US18725743

申请日：2022-08-04

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Likang ZHANG ,  Yuanzhen WANG ,  Feiyu LV ,  Yi XU

IPC: C04B35/26 ,  C04B35/626 ,  C04B35/64

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: mixing raw materials according to a stoichiometric ratio to obtain a raw material mixture; performing first wet ball milling on the raw material mixture to obtain a first slurry; sequentially drying and pre-sintering the first slurry to obtain first powder; performing second wet ball milling on the first powder to obtain a second slurry; sequentially drying and granulating the second slurry to obtain second powder; and sequentially forming and sintering the second powder to obtain a microwave ferrite material. Accordingly, 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.

公开(公告)号：US20240420874A1

公开(公告)日：2024-12-19

申请号：US18705947

申请日：2023-02-22

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Yuanzhen WANG ,  Yuhang BAO ,  Likang ZHANG ,  Feiyu LV ,  Yangdong YU ,  Yangzhong DU

IPC: H01F1/36 ,  C04B35/26 ,  C04B35/626 ,  C04B35/634 ,  C04B35/64

Abstract: Disclosed are a microwave ferrite material suitable for a 5G radio frequency device and a preparation method therefor. The preparation raw materials of the microwave ferrite material comprise a first microwave ferrite material and a second microwave ferrite material. In the microwave ferrite material provided by the present application, a double-component formula is introduced, proper ion substitution is employed, and ball milling and sintering processes are controlled, and therefore, the prepared microwave ferrite material has the characteristics of high saturation magnetic moment, high Curie temperature, narrow linewidth and low loss, and can be applied to industrial large-scale production of 5G radio frequency devices.

公开(公告)号：US20240286959A1

公开(公告)日：2024-08-29

申请号：US18571679

申请日：2021-11-10

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Yuanzhen WANG ,  Likang ZHANG ,  Feiyu LV ,  Yangzhong DU

IPC: C04B35/26 ,  C04B35/626 ,  C04B35/634 ,  C04B35/64

CPC classification number: C04B35/2641 ,  C04B35/6261 ,  C04B35/62655 ,  C04B35/63416 ,  C04B35/64 ,  C04B2235/3274 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5463 ,  C04B2235/6567 ,  C04B2235/77

Abstract: The present application provides a high-saturation and low-loss bi-component microwave ferrite material, and a preparation method therefor and the use thereof. The high-saturation and low-loss bi-component microwave ferrite material comprises a first microwave ferrite material and a second microwave ferrite material. The preparation method comprises the following steps: (1) mixing a first microwave ferrite material with a second microwave ferrite material according to the formula amounts, and then performing wet ball milling to obtain a ball-milled material; (2) drying the ball-milled material obtained in step (1), and sieving and then granulating same; and (3) sequentially forming and sintering the granulated particles obtained from step (2) to obtain a high-saturation and low-loss two-component microwave ferrite material.