TD-LTE dynamic range definition

[wccheng]

Dear all,

I have a question about the dynamic range definition. For 5MHz channel spacing, the dynamic range is 75dB. I have seen some transmitter architechture, it always uses external Power Amplifier. Then, the dynamic range = 75dB does consist of this external power amplifier? Or, this 75dB just count in all on-chip circuit only?

Thanks
wccheng

 

[vfone]

The dynamic range is given by the output power at antenna connector, which is between +24dBm and -50dBm.
The entire transmitter chain, Modulator, VGA, PA Driver and PA shall contribute for this dynamic range.

 

[wccheng]

Thanks for your reply. useful

The dynamic range is given by the output power at antenna connector, which is between +24dBm and -50dBm.
The entire transmitter chain, Modulator, VGA, PA Driver and PA shall contribute for

this dynamic range.