Magnetic multilayer composite and a method of forming the same

A magnetic multilayer composite comprising:

• a core substrate layer,
• an outer magnetic layer overlying a first surface of the core substrate layer, and
• an inner magnetic layer underlying a second surface of the core substrate layer opposite of the first surface of the core substrate layer,
• wherein the composite comprises a magnetic layer thickness ratio TM/TS of at least about 0.005, where TM is equal to the total thickness of the outer magnetic layer and the inner magnetic layer and TS is the total thickness of the substrate, and
• wherein the composite comprises a permeability rating (X, Y), where the permeability rating (X, Y) is equal to a peak point (X, Y) along a plot of the imaginary part of magnetic permeability (μ″) of the composite plotted as a function of frequency, where X is within the range of 10 MHz to 10 GHZ, and Y is greater than 100.

An antenna comprising a magnetic multilayer composite, wherein the magnetic multilayer composite comprises:

• a core substrate layer,
• an outer magnetic layer overlying a first surface of the core substrate layer, and
• an inner magnetic layer underlying a second surface of the core substrate layer opposite of the first surface of the core substrate layer,
• wherein the composite comprises a magnetic volume ratio VM/VS of at least about 0.005, where VM is equal to the total volume of magnetic material in the composite and VS is the total volume of substrate, and
• wherein the composite comprises a permeability rating (X, Y), where the permeability rating (X, Y) is equal to a peak point (X, Y) along a plot of the imaginary part of magnetic permeability (μ″) of the composite plotted as a function of frequency, where X is within the range of 10 MHz to 10 GHz, and Y is greater than 100.