Injection locked frequency divider

An injection locked frequency divider comprising:

• a resonator circuit including a first inductor, a second inductor, a third inductor and a fourth inductor, each of said first to fourth inductors having a first terminal and a second terminal, said second terminals of said first and second inductors being respectively coupled to said first terminals of said third and fourth inductors;
• and
• a mixer circuit for receiving an input voltage signal with an input frequency, coupled to said second terminals of said third and fourth inductors, and cooperating with said resonator circuit to form a tank circuit that has a free-running frequency and that defines a frequency locking range which is around three times the free-running frequency, such that the input frequency falls within the frequency locking range;
• wherein, by at least performing mixing with a differential first reference voltage signal pair, said mixer circuit generates a differential mixed voltage signal pair at said second terminals of said third and fourth inductors based on the input voltage signal, the differential mixed voltage signal pair having a frequency that is one-third the input frequency, and being outputted at said first terminals of said third and fourth inductors.