Multiple layer inductor and method of making the same

A method of designing a multiple layer spiral inductor having a plurality of spiral conductive patterns disposed on corresponding substrate surfaces, the method comprising:

• (a) determining a number of spiral conductive patterns;
• (b) selecting a spiral shape for each of the spiral conductive patterns;
• (c) defining spatial characteristics for each of the spiral conductive patterns;
• and
• (d) verifying the performance of the multiple layer spiral inductor having the determined number of spiral conductive patterns, the selected spiral shape, and the defined spatial characteristics.

A diplexer filter for use in a communications device, comprising:

• one or more multiple layer inductors implemented on a substrate having a plurality of surfaces;
• wherein each of the one or more multiple layer inductors includes:
• a first spiral conductive pattern disposed on a first of the plurality of surfaces;
• a second spiral conductive pattern disposed on a second of the plurality of surfaces;
• a continuing interconnection coupled to said first and second spiral conductive patterns;
• an interface coupled to said first and second spiral conductive patterns;
• and
• a first conductive shield pattern disposed on a third of the plurality of surfaces, said third surface adjacent to said second surface.