Incorporation of oxides into ferrite material for improved radio radiofrequency properties

Patent metadata

Field	Value
Publication number	US-10276287-B2
Application number	US-201514887773-A
Country	US
Kind code	B2
Filing date	Oct 20, 2015
Priority date	Oct 24, 2014
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

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

What is claimed is:

1. An enhanced hexagonal ferrite having increased magnetic properties, the enhanced hexagonal ferrite comprising:
a y-phase hexagonal ferrite material, the y-phase hexagonal ferrite material having about 2 weight percent of CoFe 2 O 4 or SrFe 12 O 19 into the y-phase hexagonal ferrite material incorporated within.

2. The hexagonal ferrite of claim 1 wherein the Y-phase hexagonal ferrite material includes Sr 1.6 Na 0.4 Co 1.6 Sc 0.4 Fe 11 O 22 .

3. The hexagonal ferrite of claim 1 wherein CoFe 2 O 4 is incorporated into the y-phase hexagonal ferrite material as a separate phase from the y-phase hexagonal ferrite material.

4. The hexagonal ferrite of claim 1 wherein CoFe 2 O 4 or SrFe 12 O 19 is incorporated into the y-phase hexagonal ferrite material at two weight percent.

5. The hexagonal ferrite of claim 1 wherein SrFe 12 O 19 is incorporated into the y-phase hexagonal ferrite material as a separate phase from the y-phase hexagonal ferrite material.

6. A radiofrequency antenna for use in high frequency applications comprising:
a y-phase hexagonal ferrite material, the y-phase hexagonal ferrite material having about 2 weight percent of CoFe 2 O 4 or SrFe 12 O 19 into the y-phase hexagonal ferrite material incorporated within to form an enhanced hexagonal ferrite material.

7. The radiofrequency antenna of claim 6 wherein the Y-phase hexagonal ferrite material includes Sr 1.6 Na 0.4 Co 1.6 Sc 0.4 Fe 11 O 22 .

8. The radiofrequency antenna of claim 6 wherein CoFe 2 O 4 is incorporated into the y-phase hexagonal ferrite material as a separate phase from the y-phase hexagonal ferrite material.

9. The radiofrequency antenna of claim 6 wherein the CoFe 2 O 4 or the SrFe 12 O 19 is incorporated into the y-phase hexagonal ferrite material at a weight percent of two.

10. The radiofrequency antenna of claim 6 wherein SrFe 12 O 19 is incorporated into the y-phase hexagonal ferrite material as a separate phase from the y-phase hexagonal ferrite material.

11. A radiofrequency device incorporating the hexagonal ferrite of claim 1 .

12. A radiofrequency device incorporating the antenna of claim 6 .

13. The radiofrequency device of claim 12 , wherein the radiofrequency device is a power amplifier.

14. A circulator comprising a y-phase hexagonal ferrite material, the y-phase hexagonal ferrite material having about 2 weight percent of CoFe 2 O 4 or SrFe 12 O 19 into the y-phase hexagonal ferrite material incorporated within to form an enhanced hexagonal ferrite material.

15. The circulator of claim 14 wherein the Y-phase hexagonal ferrite material includes Sr 1.6 Na 0.4 Co 1.6 Sc 0.4 Fe 11 O 22 .

16. The circulator of claim 14 wherein SrFe 12 O 19 is incorporated into the y-phase hexagonal ferrite material as a separate phase from the y-phase hexagonal ferrite material.

17. The circulator of claim 14 wherein CoFe 2 O 4 is incorporated into the y-phase hexagonal ferrite material as a separate phase from the y-phase hexagonal ferrite material.

18. The circulator of claim 14 wherein CoFe 2 O 4 or SrFe 12 O 19 is incorporated into the y-phase hexagonal ferrite material at two weight percent.

19. The circulator of claim 14 wherein the CoFe 2 O 4 or the SrFe 12 O 19 is incorporated into the y-phase hexagonal ferrite material at a weight percent of two.

20. A radiofrequency device incorporating the circulator of claim 14 .

Assignees

• Skyworks Solutions Inc

Inventors

• Hill Michael David

Classifications

• C04B35/2683

  Other ferrites containing alkaline earth metals or lead · CPC title

• C04B35/26

  based on ferrites · CPC title

• C04B2235/3241

  Chromium oxides, chromates, or oxide-forming salts thereof · CPC title

• H01Q1/36

  Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) · CPC title

• C04B2235/3262

  Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO · CPC title