Title :
An image rejection down conversion mixer architecture
Author :
Kim, Nam-Soo ; Choi, Jung-Ki ; Kim, Shin-Chol ; Lee, Sang-Gug ; Lee, Chan-Gu ; Jung, Hae-won ; Yu, Hyun-Kyu
Author_Institution :
Inf. & Commun. Univ., Taejoen, South Korea
Abstract :
An image rejection down-conversion mixer architecture is presented which does not require low-pass filters. The image rejection performance of conventional architectures, the Hartley and Weaver, are analyzed as a function of phase and gain mismatches and compared with the proposed architecture. The proposed architecture that adopts a double poly-phase filter at the front and back of mixer shows better performance due to the inherent compensation characteristics for the mismatch signal
Keywords :
filters; mixers (circuits); compensation characteristics; double poly-phase filter; gain mismatch; image rejection down conversion mixer architecture; image rejection performance; mismatch signal; phase mismatch; Band pass filters; Frequency conversion; Frequency domain analysis; Image analysis; Image converters; Low pass filters; Performance analysis; Performance gain; Pressing; Radio frequency;
Conference_Titel :
TENCON 2000. Proceedings
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-6355-8
DOI :
10.1109/TENCON.2000.893674
