RTOS/AWR1642BOOST: Why the range limitation need to multiply by 0.9 ?

Silkworm

Intellectual 815 points

Part Number: AWR1642BOOST
Other Parts Discussed in Thread: AWR1843

Tool/software: TI-RTOS

Hi sir,

In the TI reference "Programming Chirp Parameters in TI Radar Devices ".

The part of 2.1.1 Maximum Range.

http://www.ti.com/lit/an/swra553/swra553.pdf

Why the range limitation need to multiply by 0.9 ?

AWR1843 also?

Thanks

Frank

over 6 years ago

0 Cesar over 6 years ago

TI__Guru*** 149184 points

Hi,

Please see the Range Estimation section of the training

training.ti.com/intro-mmwave-sensing-fmcw-radars-module-1-range-estimation

Thank you
Cesar

0 Jitendra Gupta over 6 years ago

TI__Guru 69990 points

Hi Frank,
That is to avoid DFE settling duration and does the sampling first 90% of time.

Regards,
Jitendra

0 Silkworm over 6 years ago in reply to Jitendra Gupta

Intellectual 815 points

Hi Jitendra,

About the 90%, it means 90% ramp up time or 90% adc capture time(256*(1/fs))?

Is it a fixed value?

BR
Thanks
Frank

0 Cesar over 6 years ago in reply to Silkworm

TI__Guru*** 149184 points

Hi,

This is a limitation of the IF, which results in a limitation of the Fs.

The datasheets provide the Fs supported by the different devices

Thank you
cesar

0 Silkworm over 6 years ago in reply to Cesar

Intellectual 815 points

Thank you Cesar.

Thank you Jitendra.

Thanks

Frank

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RTOS/AWR1642BOOST: Why the range limitation need to multiply by 0.9 ?