Dear
Mr. Meenakshi
As you mentioned dc offset
appear at the local frequency. I agree with you.
When I use an external mixer,
your below comments are a wonderful support.
But now I want to know that
coarse mixer may generate dc offset in a dac34sh84.
DAC input data dc-offset
convert to 552.96MHz and then convert to radio frequency 2595.06MHz.
External mixer dc-offset
frequency is 2042.1MHz and coarse mixer dc-offset is 552.96MHz.
I can cancel 2042.1MHz carrier with RF channel filter but can not decrease 2595.06MHz carrier.
Best Regards