practical mixer solution for Zero-IF

Hi, some one said Sub-Harmonic mixer is better practical solution for zero-if architecture? Is it true? Any comments?


Thanks.

Perhaps some technical note at www.miteq.com may help you.

Many Mixers work with IF range from DC to...
IF at 0 Hz implies the fact that a small portion of LO power will be detected, so DC is not 0 Volt.
The useful information is the difference from the actual Voltage and the detected one. A mixer working at Zero IF is also called "phase detector"