Title :
Wideband image suppression in low-IF receivers
Author :
Seagraves, Ernest E. ; Walcott, Bruce L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Kentucky Univ., Lexington, KY, USA
Abstract :
This paper presents the analysis of a wideband low-IF receiver topology based on a quad-IF receiver followed by a Hartley image suppression structure. An equivalent MIMO LTI model is developed. Based on the new equivalent model an architecture to suppress the image leakage caused by the analog mismatch in the I and Q signal paths is proposed. The model-based image suppression is validated through simulation and shown to provide better performance than existing solutions.
Keywords :
MIMO systems; interference suppression; radio receivers; Hartley image suppression structure; MIMO LTI model; analog mismatch; low-IF receiver topology; quad-IF receiver; signal paths; wideband image suppression; wideband receiver topology; Computer architecture; Costs; Image analysis; Image converters; MIMO; Narrowband; Radio frequency; Topology; Wideband; Wireless communication;
Conference_Titel :
Circuits and Systems, 2005. 48th Midwest Symposium on
Print_ISBN :
0-7803-9197-7
DOI :
10.1109/MWSCAS.2005.1594109
