Differential amplifier including dual magnetically coupled feedback loops

An amplifier circuit, comprising:

• a first amplifier having a first amplifier input and a first amplifier output;
• a transformer including a first transformer component having a first primary winding in series with the first amplifier output and a first secondary winding coupled to the first amplifier input wherein the first primary winding and the first secondary winding are arranged such that a portion of a first magnetic field generated by the first primary winding couples to the first secondary winding through a first magnetically coupled feedback loop, thereby providing first feedback from the first amplifier output to the first amplifier input;
• a second amplifier having a second amplifier input and a second amplifier output;
• and
• wherein the transformer includes a second transformer component having a second primary winding in series with the second amplifier output and a second secondary winding coupled to the second amplifier input wherein the second primary winding and the second secondary winding are arranged such that a portion of a second magnetic field generated by the second primary winding couples to the second secondary winding through a second magnetically coupled feedback loop, thereby providing second feedback from the second amplifier output to the second amplifier input;
• wherein the first primary winding and the second primary winding are configured to drive a load.