What is regenerative divider?

No input signal when regeneration frequency divider no output, circuit has no internal or sinusoidal signal, only some faint noise and disturbance. When the frequency is fi input signal comes, mixer allows it and exist in a weak noise frequency f0 (N-1), production of components mixed frequency f0 = fi/N of weak signals. This signal is enlarged by (N-1) frequency multiplier feedback to the mixer. After this cycle of positive feedback, circuit of every link signal will increase until the result of nonlinear characteristics of the device to limit reached steady-state operation. Figure 3 frequency multiplier is not required, rely on the mixer in the higher frequency combined can produce the desired output frequency components, as long as the intermediate frequency amplifier gain sufficiently large circuit can work, but work relatively narrow frequency band. Insert (N-1) frequency multiplier can enable Mixer works in the most effective difference frequency condition, stretched working band. Figure 3 sine divider