Magnetic coupling and cancellation arrangement

An inductor circuit having a circuit for reducing parasitic magnetic coupling between inductors, the inductor circuit comprising:

• a first inductor having a first plurality of windings formed on a substrate;
• a second inductor having a second plurality of windings formed on the substrate and disposed a distance from the first inductor, such that parasitic magnetic coupling will occur between the second inductor and the first inductor;
• and
• a cancellation circuit having,
• a first loop formed on the substrate adjacent to and partially surrounding the first inductor and inductively coupled to the first inductor,
• a second loop formed on the substrate adjacent to and partially surrounding the second inductor and inductively coupled to the second inductor,
• a phasing network electrically coupling the first loop to the second loop, the phasing network configured to
• receive an input current from the second loop based on a magnetic flux in the second inductor,
• provide an output current to the first loop based on the input current,
• induce a flow of additional magnetic flux in the first inductor based on the output current through the first loop, and
• reduce the parasitic magnetic coupling based on the additional magnetic flux, the flow of additional magnetic flux being synchronous and opposite phase of the magnetic flux in the second inductor.

An inductor circuit having a circuit for reducing parasitic coupling between inductors, the inductor circuit comprising:

• a first inductor formed on a substrate;
• a second inductor formed on the substrate, disposed a distance from the first inductor, configured to produce a magnetic flux, and parasitically coupled to the first inductor dependent at least in part on the magnetic flux;
• a phasing network configured to receive an input signal representative of a current through the second inductor and generate a compensation current dependent on the signal representative of the magnetic flux through the second inductor;
• a first loop coupled to the phasing network and configured to receive the compensation current, the first loop being disposed adjacent to the first inductor, the first loop configured to generate a compensating magnetic flux counter-phase to the magnetic flux;
• and
• a second loop coupled to the phasing network, disposed adjacent to the second inductor, and configured to generate, in dependence on the magnetic flux, an input current as the input signal to the phasing network.