Author :
Sun, Da-You ; Xu, Jian
Author_Institution :
Nat. ASIC Syst. Eng. Res. Centre, Southeast Univ., Nanjing, China
fDate :
6/8/2000 12:00:00 AM
Abstract :
A new receiver topology called the double-quadrature zero-IF topology is presented. Studies have shown that with the new topology the sensitivity to phase errors of quadrature channels can be significantly decreased, and that the image-recognition ratio (IRR) against the gain mismatch characteristic is inherently superior to that for the conventional zero-IF scheme by ~6 dB
Keywords :
frequency convertors; mobile radio; radio receivers; double-quadrature zero-IF topology; gain mismatch characteristic; image-recognition ratio; mobile receivers; phase errors; quadrature channels; receiver topology;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20000745
