Push-push oscillator circuit

A push-push oscillator circuit, comprising:

• a first oscillation branch with a first active device and a first tank adapted to provide a signal having a fundamental frequency f0;
• a second oscillation branch with a second active device and a second tank, the second oscillation branch symmetrical to the first oscillation branch and adapted to provide a signal having the fundamental frequency f0;
• a first output branch coupled to the first oscillation branch, the first output branch including a first coupling inductor connected between the first oscillation branch and a first connection point, a second coupling inductor connected between the first connection point and a second connection point, and a first fundamental frequency branch connected between the second connection point and a first fundamental frequency terminal, the first fundamental frequency terminal to provide a first component of a differential signal having a fundamental frequency f0;
• and
• a second output branch coupled to the second oscillation branch, the second output branch including a third coupling inductor connected between the second oscillation branch and a third connection point, a fourth coupling inductor connected between the third connection point and a fourth connection point, and a second fundamental frequency branch connected between the fourth connection point and a second fundamental frequency terminal, the second fundamental frequency terminal to provide a second component of the differential signal having the fundamental frequency f0.