This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Frequency Slope

Part Number: IWR6843

Tool/software: WEBENCH® Design Tools

Hey there,

1.)

In the datasheet of the IWR6843 the Ramp rate is given by 266 MHz/μs.

Then I found the following (Source: mmwave_sdk_03_01_01_02\packages\ti\control\mmwavelink\docs\doxygen\html\structrl_profile_cfg__t.html)

rlInt16_t  freqSlopeConst
  Ramp slope frequency,
For 77GHz devices (76GHz to 81GHz):
1 LSB = (3.6e6 * 900) / 2^26 = 48.279 kHz/uS
Valid range: -2072 to 2072 (Max 100MHz/uS)
For 60GHz devices (57GHz to 64GHz):
1 LSB = (2.7e6 * 900) / 2^26 = 36.21 kHz/uS for 60GHz devices
Valid range: -6905 to 6905 (Max 250 MHz/uS)

And finally the mmWave Sensing Estimator says: Slope only can be 100MHz/µs or less.

So what is correct?

2.)

Another question about the mmWave Sensing Estimator: What is the frequency slope constant?

Thank you in advance!

Nicolas