wccheng
Full Member level 5
Dear all,
I have a question about the direct conversion. I hope anyone could answer my question. Thanks first.
Q.1 For example, I have a RF signal band 900MHz +/- 10MHz. For the direct conversion, the LO should be 900MHz or not? If LO=900 MHz, there are 10MHz is in the negative frequency side after down conversion. How this problem could be solved? Or, LO should be 890MHz instead?
Q.2 For the mixer simulation (direct conversion), if RF=900MHz and LO=900MHz, there are a large DC at 0Hz. So, how could I simulate the down converted frequency result?
Thanks
chi
I have a question about the direct conversion. I hope anyone could answer my question. Thanks first.
Q.1 For example, I have a RF signal band 900MHz +/- 10MHz. For the direct conversion, the LO should be 900MHz or not? If LO=900 MHz, there are 10MHz is in the negative frequency side after down conversion. How this problem could be solved? Or, LO should be 890MHz instead?
Q.2 For the mixer simulation (direct conversion), if RF=900MHz and LO=900MHz, there are a large DC at 0Hz. So, how could I simulate the down converted frequency result?
Thanks
chi