AWR2944: Is the 13dB Noise Figure shown in Datasheet single sideband?

Hank Tan

Prodigy 200 points

Part Number: AWR2944
Other Parts Discussed in Thread: AWR2243

Tool/software:

A previous post mentioned the noise figure in awr2243 datasheet is double sideband. How about in awr2944?

5 days ago

0 James Murdock65 5 days ago

TI__Intellectual 2686 points

Hello,

The question is a little misleading. In AWR2944 we support real-only receive, not full complex. However, both the positive and negative frequencies are real, so you will measure the same SNR if you look at positive or negative spectrum. Anyway, it shouldn't impact your calculations, you can use the NF as stated in the DS.

Regards,

James

0 Hank Tan 4 days ago in reply to James Murdock65

Prodigy 200 points

The reason I asked is based on this question.
https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/922935/awr2243-awr2243-noise-figure-question-dsb-nf-or-ssb-nf

It says AWR2243's NF is based on complex mode. In real mode, the NF will be 3dB worse.

AWR2944's 13dB NF is based on real mode, so we should not add 3dB to it in our link budget calculation, correct?

0 aozer 3 days ago in reply to Hank Tan

TI__Mastermind 24565 points

Hello,

The front end of the AWR2944 is not the same as the AWR2243. The noise figure published in the datasheet is for real mode so there is no need to add 3dB.

Regards,

Adrian

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AWR2944: Is the 13dB Noise Figure shown in Datasheet single sideband?