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

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

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

Many thanks,

the steps will be

1- run the .py scripts

2-Run DPD after that.

Best Regards

Yes. Could you please let me know what are you trying to test/ achieve with the loop back test? Are you trying to measure the RX performance? If so, i would advice to test at the Tx out of the chip rather testing at PA out.

Hi 

I tried to make DPD work with 5G signal BW100 MHz

the problem I tried to generate signal by using MATLAB but look like the signal has distortion therefore i change my cct. to  

I try to approve the concept of DPD work with 5G

Best Regards

Hi Rammarao

Many thanks for your help,I can pass the signal rx tp tx

Hi Ramarao

 when i send the signal direct from signal generator to PA 

but when I send through ADRV I got

RichS1 said:

 when i send the signal direct from signal generator to PA 

You mean directly from the signal generator to the PA input, no ADRV involved? Which Test model is this?

RichS1 said:

but when I send through ADRV I got

Can you check at lower powers, may be about 3dB backoff and see if the spectrum is fine?

Are you measuring with the same test model as above?

I believe the input signal to Rx. input is within the dynamic range and not saturating the Rx path?

Try to provide RF input somewhere around -25dBm or so at the Rx. input.

before DPD

after DPD

any possibility to increase the correction to obtain -47 or-50 dbc

please?

You may try to change "IF GAIN" from “LOW” to “medium”