Nickel zinc copper ferrite for VUHF antenna application
AssigneeExxelia
InventorRémy Ul
Life of this patent
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Abstract
A composition and a solid material is especially suitable for the manufacture of an antenna adapted to operate in the very high frequency and ultra high frequency or V/UHF band. The composition has the formula NiaZnbCucCodFe2−δO4, in which 2(a+b+c+d)+3(2−δ)=8, 0.05<b<0.5, e.g. 0.1<b<0.5, e.g. 0.1<b<0.4, e.g. 0.15<b<0.35, 0.10<c<0.25, preferably 0.15<c<0.25, alternatively c is 0.20, 0.04<d<0.25, preferably 0.06<d<0.25, and more preferably 0.07<d<0.25, and δ<0.05.
Claims14
A composition chosen from compositions of the following formulas:
- Ni0.4805Zn0.3195Cu0.20Co0.06Fe1.96O4,
- Ni0.4405Zn0.3195Cu0.20Co0.10Fe1.96O4,
- Ni0.4347Zn0.3153Cu0.20Co0.11Fe1.96O4,
- Ni0.4231Zn0.3069Cu0.20Co0.13Fe1.96O4,
- Ni0.4115Zn0.2985Cu0.20Co0.15Fe1.96O4;
- and
- Ni0.6Zn0.2Cu0.20Co0.06Fe1.96O4.
A VHF or V/UHF antenna wherein it comprises a composition of the formula NiaZnbCucCodFe2−δO4, wherein:
- 2(a+b+c+d)+3(2−δ)=8
- 0.05<b<0.5,
- 0.10<c<0.25,
- 0.04<d<0.25, and
- δ<0.05.
A VHF or V/UHF antenna of the printed or microstrip type, wherein it comprises one or more layers of a substrate bonded to a radiating element, of which one or more layers of the substrate comprises a composition of the formula NiaZnbCucCodFe2−δO4, wherein:
- 2(a+b+c+d)+3(2−δ)=8
- 0.05<b<0.5,
- 0.10<c<0.25,
- 0.04<d<0.25, and
- δ<0.05.
Dependencies are inferred from the claim text.