ADRV9029/26 EVB Power

The full scale output power of the TRX is as below:

You can use Tx. attenuation control to change the Tx power.

BTW,Where from are you referring to +/-6dBm?

Dear Ramarao

Many thanks for your answer, but max what i can obtained of board -10 dbm whem i used the waveform or 2 tones abd ATT =0 for TX1.

Best Regards

Richs1

At what frequency, are you measuring the output power? The EVB that you have is matched for Low band, Mid band or high band?

The output power also depends on the BB input waveform scaling that you are using.

For eg, if the PAR of the input waveform signal is 11dB and if you use -11dBFS scaling waveform, you could get an output power of 7(Max. power)-11 = -4dBm from the Tx.out.

Try testing with a CW tone initially.

Hi Ramarao

I tried to measure just one tone i got

after that i changed for my Signal which is 

3.5Ghz,70Mhz bandwidth

 I got this

Just to conformed  

RichS1 said:

3.5Ghz,70Mhz bandwidth

70MHz? Are you referring to 5G NR or any other application?

5G NR does not have 70MHz as far as i know.

Also, the measurement bandwidth is per 100MHz where as it should be 70MHz as the channel BW is 70MHz. To me, it looks like you are getting the output power as expected.

Yes this for 5G NR,

I will repeat the experiment  with100 MHZ .

The output level is as expected (CW is ~5dBm and assuming ~11dB PAR, you are observing ~ -6dBm Avg power)

This should be fine.

Could i get more power from the ADRV9029/26 EVB? Please

No, that is not possible

Okay Many thanks.

Could  you direct me how can I run the DPD? Please

and which model I have to chose at begging. 

Okay Many thanks.

Could  you direct me how can I run the DPD? Please

and which model I have to chose at begging. 

The steps to enable DPD are explained in the document available in the link

 Testing DPD with TES GUI 

You can try to do a model sweep following the below link

https://wiki.analog.com/resources/eval/user-guides/adrv9029/dpd_model_optimization

Before doing the model sweep, you may try to use an existing model file and check the DPD performance.

Which PA are you using?

Cree Transistor 

FXL/WS1A3640

this with DPD 

Can you do a DPD model sweep, get an optimised one and test with the same?

https://wiki.analog.com/resources/eval/user-guides/adrv9029/dpd_model_optimization

Hi Ramarao

HI Ramarao

I hope you okay, I use WS1A3640.

I tried to use the DPD to obtain the best results.

Please any possibility to have 5G waveform to upload in ADRV9026/29 to check my DPD is it work or not.

Best Regards

Rich

Due to licensing restrictions, we won't be able to share any 5G waveforms. Thanks.

Hi Ramarao

 I tried to generate new model suitable for my transistor but nothing coming out {ADRV9029 DPD Model [Analog Devices Wiki]}.

Best Regards

What is the raw ACLR of the PA? How much correction are you getting?

Can you please provide us the DPD tracking config. parameters and the DPD statistics?

What is the ORX gain Index?

Can you please test at 3dB backoff from the target power and check the DPD performance?

Hi Rammaro

Many thank for your help,DPD is working now.

Please could you guide me how can i receive signal from Signal generator--->ADRV board(RX)------>ADRV board TX port by using GUI.

Best Regards

Please use the attached script for the Rx to Tx loop back. If you are measuring EVM, make sure to swap the IQ in Spectrum Analyser.

3247.ADRV9025_LoopRxDataToTx_Enableset.zip