Title :
A novel IP2 calibration method for low-voltage downconversion mixers
Author :
Dufrêne, Krzysztof ; Weigel, Robert
Author_Institution :
Inst. for Electron. Eng., Erlangen-Nuremberg Univ., Erlangen
Abstract :
This paper describes a novel IP2 calibration method for double balanced current-commutating downconversion mixers. The proposed technique reduces difference between duty cycle mismatches of two switching pairs in the mixer core, being suitable especially for low-voltage monolithic downconversion mixers employing common mode feedback block in the output stage. A tunable IQ mixer prototype, fabricated in a 0.13mum RF CMOS technology and operating under low voltage supply of 1.5 V, is presented. Experimental results confirm the feasibility of the IP2 tuning technique
Keywords :
CMOS analogue integrated circuits; low-power electronics; mixers (circuits); radiofrequency integrated circuits; 0.13 micron; 1.5 V; IP2 calibration; RF CMOS technology; common mode feedback block; duty cycle mismatches; low voltage downconversion mixers; tunable IQ mixer prototype; Baseband; CMOS technology; Calibration; Circuit optimization; Intermodulation distortion; Low voltage; Output feedback; Radio frequency; Resistors; Transfer functions;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9572-7
DOI :
10.1109/RFIC.2006.1651148
