Radar sensor Forum Discussions

[h_nakamura]

Please tell me the meaning below the sentence of AN625 (p12 / 53) below.

“In pulsed mode the device is active only a short time followed by a time where VCO, RF and PLL is off. Baseband keeps running all the time.  ”

Does it mean that the RF signal is output even when the VCO, RF and PLL are off?

I don’t know clearly what is “Baseband”.

And if it possible, please indicate the off block in the block diagram of BGT60LTR11AIP.

[AliAsgar]

Hi,

There is no RF signal output when the RF, VCO and PLL is off.

The baseband parts are in the blue blocks in the attached photo.

Best Regards,
AliAsgar

[h_nakamura]

Thanks for your  help. I understood it but I have an additional question.

Why the baseband parts are running when VCO, PLL is  off?  IFI and IFQ aren't meaningless because RF part is off?

[AliAsgar · Accepted solution]

Hi,

The baseband parts have active high pass and low pass filters with large time constant. So, it would be better to keep it on.

Best Regards,
AliAsgar

[h_nakamura]

I see, I understand. Thank you very much.

Best regards,

H.N