AWR1243: Transmitter Amplitude Noise

Jonathan Jones2

Part Number: AWR1243

Dear Sir/Madame,

Please can you let me know what the transmitter amplitude noise (-145dBc/Hz) given in section 5.7 of the the AWR1243 datasheet refers to? Is this boradband thermal (AWGN) noise at the output of the transmitter? Could you let me know how the transmitter amplitude noise varies with transmitter output level and what transmit power level gives -145dBc/Hz?

Thank you in advance for your help with this matter.

Best regards

Jonathan

over 7 years ago

0 Akash Gondalia over 7 years ago

TI__Guru 50240 points

Hello Jonathan,

I've asked AWR team member to look at this for you. Someone should have an answer for you sometime this week.

Cheers,
Akash

0 Anil Mani over 7 years ago in reply to Akash Gondalia

TI__Expert 4720 points

Hi Jonathan.

'Amplitude noise' refers to the noise skirt created by the combination of the presence of a target and certain non-idealities in the transmitter. At the receiver, this noise floor is relative to the target amplitude. For e.g if the target amplitude is x dBFs, then the noise skirt will exist at (x - 145) dBFs/Hz.

Regards

Anil

0 Jonathan Jones2 over 7 years ago in reply to Anil Mani

Intellectual 680 points

Hi Anil

Thank you for your reply.

Best regards

Jonathan

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AWR1243: Transmitter Amplitude Noise