Study of fundamental wave injection locking of MM-wave Gunn harmonic oscillator using large signal model of Gunn device

The authors present a novel nonlinear mathematical model of a Gunn device based on the device physics. Using this model, they analyzed the fundamental wave injection locking of a harmonic Gunn oscillator. An analytic formula describing the relation between locking bandwidth and the injected power was obtained. An experiment was performed in V-band to verify the theoretical analysis. It is shown that as the injected power increases, the locking bandwidth increases more slowly and tends to a constant.<>