Hello, dear colleagues!
The trouble is output power instability at ADRV9371-W/PCBZ TX output:
When we switch on the evaluation board, the first 2-3 minutes output power of transmitter equal 2.5 dBm, but after some time – around 3-4 minutes, when board heat up, the output power become decrease, and after then – increase. The swing of output power may amount to – 9 dBm (min) or 1 dBm (max).
detailed description in attach.
Did anybody face similar challenge?
I will be grateful for a help.