Patent ID: 9581683
Date: 2017-02-28
CPC Classifications: G01S

Claim:
1. A delay device for checking a frequency modulated continuous wave (FMCW) radar, comprising: an input/output unit that is configured to input or output control setting values; a controller that is configured to output control signals corresponding to the control setting values input by an operator through the input/output unit; wherein the control setting values include a time delay value corresponding to the distance of the target, a Doppler frequency corresponding to a relative velocity with the target, and a variable attenuation value corresponding to a magnitude of a signal of the target; and a transceiver that is configured to delay an FMCW radar signal by the time delay value through a programmable single chip delay line according to the control signal of the controller, and transmit the time-delayed FMCW radar signal to a FMCW radar, wherein the transceiver is further configured to shift a frequency of the time-delayed FMCW radar signal by the Doppler frequency, and attenuate the frequency-shifted FMCW radar signal by the variable attenuation value, wherein the time delay value, the Doppler frequency value and the attenuation value are variable in response to an input of an operator.