LMX2694EPEVM: Expected Output Power at 14GHz

Hi Trevor,

Please check the connectivity between the SMA connector and the pcb trace, sounds to me this is a cold soldering issue.

I checked, and there was actually a broken solder joint on one of the units, fixed it, it did not change the output however. On another unit I have, it does not have any solder issues and it is also outputting the same ~-30dBm. 

Hi Trevor,

Not sure if this is a silly TICS Pro problem, do you get a strong 7GHz signal with the default settings?

No, which I may be doing something wrong in the software, but when I switch the doubler from x2 to x1 to get a 7GHz signal it is still in the -30dBm range. Attached is a screenshot of my TICS Pro configuration using the default configuration from 8/15/2021. 

Hi Trevor,

Seems, there is something wrong in TICS Pro tool. To change the output frequency from 14G to 7G, Channel divider and Output_MUX need to be changed, not the input doubler.

I would suggest to download the latest TICS Pro software and use the below config file FYR.

LMX2694_100MOSCin_14G.tcs

Thanks!

Regards,
Ajeet Pal

Ajeet, I'll go ahead and try that, I'm not actually trying to run at 7GHz though, that was just for a test. I'm trying to run it closer to its default of 14GHz. 

EDIT: I tried that, gave me the same result as before running at 14GHz default, outputting at ~ -35dBm.