INTEGRATED CIRCUIT COMPRISING FREQUENCY GENERATION CIRCUITRY FOR CONTROLLING A FREQUENCY SOURCE

摘要

An integrated circuit (105) comprises frequency generation circuitry (100) for controlling a frequency source (110) for an automotive radar system. The frequency generation circuitry (100) comprises a Phase Locked Loop (PLL) (115) arranged to generate a control signal (117) for controlling the frequency source (110), a fractional-N divider (120) located within a feedback loop of the PLL (115), and frequency pattern control logic ( 125) operably coupled to the fractional-N divider (120) and arranged to control the fractional-N divider (120), by way of a frequency control signal (135), such that the PLL (115) generates a Frequency Modulated Continuous Wave (FMCW) control signal (117).