A receiver system and method for receiver testing Abstract A receiver system (100) which may be implemented in an integrated circuit device (101) and suitable for use in automotive radar systems (201) such as collision avoidance systems, includes self test circuitry whereby a local oscillator test signal is generated by an on-board frequency multiplier (126) and mixed in a down-conversion mixer (106) with an RF test signal. The RF test signal is generated on the device (101) by up-conversion of an externally generated low-frequency test signal with the local oscillator test signal. Baseband components may also be checked using test signals of suitable frequency divided down from the local oscillator test signal by a programmable frequency divider (130). This self test arrangement obviates any need for applying externally generated RF test signals to the IC device.
