Title :
A high IIP2 direct down-conversion active mixer calibrated by RLS adaptive filter
Author :
Zhang, Li ; Jiang, Peichen ; Wang, Xu ; Mao, Cui
Author_Institution :
Center for Analog/RFIC, Shanghai Jiaotong Univ., Shanghai, China
Abstract :
A system simulation for a high input-referred second-order intercept point (IIP2) in active mixer of direct-down-conversion (DCR) with adaptive filter calibration is proposed. According to the simulation results of Simulink, by adopting the RLS filter calibration, a DCR mixer working under GSM 900 can achieve an IIP2 enhancement from 53dBm to over 70dBm within 0.3ms. The comparisons between RLS and LMS adaptive filters utilized in DCR active mixer are also presented.
Keywords :
adaptive filters; mixers (circuits); radio receivers; GSM 900; RLS adaptive filter; RLS filter calibration; Simulink; direct-down-conversion receivers; high IIP2 direct down-conversion active mixer; high input-referred second-order intercept point; Adaptive filters; Calibration; Character generation; Circuits; Energy consumption; Feedback; Frequency; GSM; Least squares approximation; Resonance light scattering;
Conference_Titel :
Microelectronics & Electronics, 2009. PrimeAsia 2009. Asia Pacific Conference on Postgraduate Research in
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-4668-1
Electronic_ISBN :
978-1-4244-4669-8
DOI :
10.1109/PRIMEASIA.2009.5397455
