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

fYear

2009

fDate

19-21 Jan. 2009

Firstpage

25

Lastpage

28

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/PRIMEASIA.2009.5397455

Filename

5397455