Investigation on Locking and Pulling Modes in Analog Frequency Dividers

Figure 4

Boundaries of the locking ranges for an ILFD with the polynomial nonlinearity in (15) for different values of passive parameters and feedthrough entity. Results are obtained by SPICE simulations (lines with circles) and by (16) (lines without circles). Circuit parameters are the following: 𝐿=4nH, 𝑅=400, 𝜔₀=1.8GHz, 𝑎₁=1/40, 𝑎₃=5/96, and 𝑉_dc=300mV.

(a)

(b)