Composite hexagonal ferrite materials
US-10604450-B2 · Mar 31, 2020 · US
Incorporation of oxides into ferrite material for improved radio radiofrequency properties
US11869689B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11869689-B2 |
| Application number | US-202117195414-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 8, 2021 |
| Priority date | Oct 24, 2014 |
| Publication date | Jan 9, 2024 |
| Grant date | Jan 9, 2024 |
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Abstract
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Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase hexagonal ferrite material, such as those including strontium. In some embodiments, oxides consistent with the stoichiometry of Sr 3 Co 2 Fe 24 O 41 , SrFe 12 O 19 or CoFe 2 O 4 can be used form an enhanced hexagonal ferrite material.
First claim
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What is claimed is: 1. A hexagonal ferrite material, the material comprising: a Y-phase hexagonal ferrite having a composition Sr 1.6 Na 0.4 Co 1.6 Sc 0.4 Fe 11 O 22 ; and an oxide having a composition Sr 3 Co 2 Fe 24 O 41 . 2. The material of claim 1 wherein the material includes about 2 wt. % Sr 3 Co 2 Fe 24 O 41 . 3. The material of claim 2 wherein the material includes 2 wt. % Sr 3 Co 2 Fe 24 O 41 . 4. The material of claim 1 wherein the Sr 1.6 Na 0.4 Co 1.6 Sc 0.4 Fe 11 O 22 is a first phase and the Sr 3 Co 2 Fe 24 O 41 is a second phase. 5. The material of claim 1 wherein the Sr 3 Co 2 Fe 24 O 41 is dissolved into the Sr 1.6 Na 0.4 Co 1.6 Sc 0.4 Fe 11 O 22 . 6. The material of claim 1 wherein the material has a Q value of greater than about 15 at 1 GHz. 7. The material of claim 1 wherein the material has a dielectric constant of about 10 to about 11. 8. A radiofrequency device incorporating the material of claim 1 . 9. The radiofrequency device of claim 8 wherein the radiofrequency device is an antenna. 10. The radiofrequency device of claim 8 wherein the radiofrequency device is a circulator. 11. A power amplifier module comprising: a radio frequency device including a hexagonal material, the hexagonal material including a Y-phase hexagonal ferrite having a composition Sr 1.6 Na 0.4 Co 1.6 Sc 0.4 Fe 11 O 22 and an oxide having a composition Sr 3 Co 2 Fe 24 O 41 . 12. The power amplifier module of claim 11 wherein the material includes about 2 wt. % Sr 3 Co 2 Fe 24 O 41 . 13. The power amplifier module of claim 11 wherein the material includes 2 wt. % Sr 3 Co 2 Fe 24 O 41 . 14. The power amplifier module of claim 11 wherein the Sr 1.6 Na 0.4 Co 1.6 Sc 0.4 Fe 11 O 22 is a first phase and the Sr 3 Co 2 Fe 24 O 41 is a second phase. 15. The power amplifier module of claim 11 wherein the Sr 3 Co 2 Fe 24 O 41 is dissolved into the Sr 1.6 Na 0.4 Co 1.6 Sc 0.4 Fe 11 O 22 . 16. The power amplifier module of claim 11 wherein the material has a Q value of greater than about 15 at 1 GHz. 17. The power amplifier module of claim 11 wherein the radio frequency device is a circulator. 18. A mobile device comprising: a radiofrequency device, the radiofrequency device including a hexagonal material, the hexagonal material including a Y-phase hexagonal ferrite having a composition Sr 1.6 Na 0.4 Co 1.6 Sc 0.4 Fe 11 O 22 and an oxide having a composition Sr 3 Co 2 Fe 24 O 41 . 19. The mobile device of claim 18 wherein the material includes about 2 wt. % Sr 3 Co 2 Fe 24 O 41 . 20. The mobile device of claim 18 wherein the material includes 2 wt. % Sr 3 Co 2 Fe 24 O 41 . 21. The mobile device of claim 18 wherein the radiofrequency device is an antenna. 22. The mobile device of claim 18 wherein the radiofrequency device is a circulator.
Assignees
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Classifications
- H01F1/01Primary
of inorganic materials (H01F1/44 takes precedence) · CPC title
based on ferrites · CPC title
containing barium, strontium or calcium · CPC title
non-metallic substances, e.g. ferrites {, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure} · CPC title
- H01F1/348Primary
Hexaferrites with decreased hardness or anisotropy, i.e. with increased permeability in the microwave (GHz) range, e.g. having a hexagonal crystallographic structure · CPC title
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- What does patent US11869689B2 cover?
- Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase hexagonal ferrite material, such as those including strontium. In some embodiments, oxides consistent with the stoichiometry of Sr 3 Co 2 Fe 24 O 41 , SrFe 12 O 19 or CoFe 2 O 4 can be used form an enhanced hexagonal ferrite …
- Who is the assignee on this patent?
- Skyworks Solutions Inc
- What technology area does this patent fall under?
- Primary CPC classification H01F1/01. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 09 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).