Title :
IIP2 calibration methods for current output mixer in direct-conversion receivers
Author :
Hotti, M. ; Ryynänen, J. ; Halonen, K.
Author_Institution :
Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
In this paper, two different IIP2 calibration methods for Gilbert cell type mixers with current-mode output are presented. The first method controls the transconductance of the mixer input stage and the second method the LO signal, respectively. Both methods are also suitable for the resistively loaded Gilbert cell mixer, which has a voltage-mode output.
Keywords :
calibration; current-mode circuits; intermodulation distortion; mixers (circuits); radio receivers; Gilbert cell type mixers; IIP2 calibration methods; LO signal control; controlled mismatch; current-mode output mixers; direct-conversion receivers; mixer input stage transconductance control; resistively loaded mixer; second order intermodulation distortion; voltage-mode output mixer; Baseband; Calibration; Electronic circuits; Filters; Intermodulation distortion; Laboratories; Nonlinear equations; Resistors; Transconductance; Voltage;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465771
