2015 Volume 12 Issue 12 Pages 20150329
This paper proposes a high-image-rejection wireless-receiver architecture with a 3-phase active RC complex filter. The double conversion receiver, in cooperation with RF filter, rejects all image signals. In particular, the double conversion corrects the gain and phase mismatches of the adjacent image, and the image-rejection ratio of the adjacent image depends only on RC mismatches in the complex filter. Thus, the total image-rejection ratio of more than 60 dB can be expected for all the image signals.