Title :
A WLAN direct up-conversion mixer with automatic image rejection calibration
Author :
Craninckx, Jan ; Debaillie, Björn ; Côme, Boris ; Donnay, Stéphane
Author_Institution :
IMEC, Belgium
Abstract :
A direct upconverter for 5 to 6 GHz WLAN is presented that includes circuitry for automatic output spectrum calibration. For calibration, the RF signal is down-converted by reusing the up-conversion mixers, making the up- and down-conversion errors correlated. The transmit errors are determined based on only low-frequency measurements. The realized mixer achieves >40 dB image rejection.
Keywords :
MMIC mixers; calibration; circuit feedback; correlation methods; wireless LAN; 5 to 6 GHz; WLAN; automatic image rejection calibration; automatic output spectrum calibration; calibration feedback circuitry; direct up-conversion mixer; direct upconverter; transmit error determination; up/down-conversion error correlation; Baseband; Calibration; Circuits; Filters; RF signals; Radio frequency; Signal analysis; Signal generators; Transceivers; Wireless LAN;
Conference_Titel :
Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8904-2
DOI :
10.1109/ISSCC.2005.1494111
