Patent ID: 8258911

Claim:
A power transformer, comprising: first and second electrically insulating solid non-glass substrates comprising an electrically insulating, non-metallic, non-semiconductor low dielectric loss material, each substrate comprising opposing upper and lower surfaces; a power amplifier circuit configured to receive an input DC power signal and convert the DC power signal into an AC power signal; a first transmitting coil disposed upon or in the upper surface of the first substrate; a second receiving coil disposed upon or in the lower surface of the first substrate; a third receiving coil disposed upon or in the lower surface of the second substrate; an input impedance matching circuit having a first input operably connected to the power amplifier circuit, and a first output operably connected to the first coil, the input impedance matching circuit being configured to match a first impedance of the first coil to an impedance of the power amplifier circuit; and an output impedance matching circuit having second inputs operably connected to the second and third coils, and further comprising a second output, the output impedance matching circuit being configured to match an impedance of the second and third coils to a second impedance of an output circuit operably connected to the second output; wherein the first coil is separated from the second coil by at least portions of the first substrate, the first and second coils are spatially arranged and configured respecting one another such that the AC power signals may be transmitted by the first coil to the second coil across a dielectric barrier comprising the non-semiconductor low dielectric loss material disposed therebetween, such material including at least portions of the first substrate; wherein the first coil is separated from the third coil by at least portions of the second substrate, the first and third coils are spatially arranged and configured respecting one another such that the AC power signals may be transmitted by the first coil to the third coil across a dielectric barrier comprising the non-semiconductor low dielectric loss material disposed therebetween, such material including at least portions of the second substrate, and further wherein each of the first and second substrates has a thickness between upper and lower surfaces thereof ranging between about 0.5 mils and about 25 mils, between about 1 mil and about 25 mils, or between about 1.5 mils and about 25 mils.