BGT60LTR11AIP pulsed-CW mode

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h_nakamura
Level 5
Level 5
Distributor - NEXTY (Japan)
First comment on KBA 10 solutions authored 50 questions asked

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.

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AliAsgar
Moderator
Moderator
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1000 replies posted 250 solutions authored 750 replies posted

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

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AliAsgar
Moderator
Moderator
Moderator
1000 replies posted 250 solutions authored 750 replies posted

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
Level 5
Level 5
Distributor - NEXTY (Japan)
First comment on KBA 10 solutions authored 50 questions asked

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?

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AliAsgar
Moderator
Moderator
Moderator
1000 replies posted 250 solutions authored 750 replies posted

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
Level 5
Level 5
Distributor - NEXTY (Japan)
First comment on KBA 10 solutions authored 50 questions asked

I see, I understand. Thank you very much.

Best regards,

H.N

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