FIELD: radar systems.
SUBSTANCE: radar level gauge system comprising PLL circuitry for generating an output signal and configured to indicate a lock state of the PLL circuitry. Further, the system includes signal modifying circuitry, which is connected to the PLL circuitry for receiving the output signal and for modifying at least one property of the output signal for forming the transmit signal. Signal modifying circuitry is arranged and configured to receive a PLL status signal indicative of the lock state of the PLL circuitry, and to modify the at least one property of the output signal in response to the PLL status signal indicating that the PLL circuitry is in a locked state.
EFFECT: radar level gauge system is disclosed.
15 cl, 7 dwg
