Hi All
I have ADRV9029/26 EVB depend on guide the power can be +_6dbm max how can i change the power output from TX port in 9026?Please
Best Regards
Hi All
I have ADRV9029/26 EVB depend on guide the power can be +_6dbm max how can i change the power output from TX port in 9026?Please
Best Regards
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
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.
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.
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
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?
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”
Whats your DPD tracking calibration configuration? You can try optimising the parameters such as Regularization value, Peak search window size, change the DPD update mode (2 for GaN PA) etc. Also, you may do a model sweep to identify the best model for your PA
Hi Ramarao
I was going through ADRV9029 data sheet and have found following paragraph page(128):
"The DPD is optimized for power amplifiers with rms output powers in the 250 mW to 10 W range"
I need to used for two amplifiers in a balanced configuration for get 42dBm (ideally), it will be higher than 10w. will DPD be still working for this power level?
Yes, there is no such restriction on the output power level from the DPD perspective. DPD will work for your target output power.