Title :
A 900MHz low voltage low power highly linear mixer for direct-conversion receivers
Author :
Moon-Su Yang ; Kim, Hye-Ryoung ; Lee, Sung-Gug
Author_Institution :
Inf. & Commun. Univ., Daejeon, South Korea
Abstract :
This paper presents a 900MHz low voltage, low power down-conversion mixer with high linearity for direct-conversion receivers. As a way to improve the third-order linearity, this paper proposes a very linear transconductance amplifier in which the size of the transistors is optimized to minimize the third-order intermodulation distortion (IMD3). A folded mixer topology is used in the designed mixer to enable the mixer to operate at low supply voltage. The design is based on a standard 0.25μm CMOS technology, and the simulation results show 15dBm of input IP3, 80dBm of input IP2, and -6.5dB of power conversion gain while dissipating a total current of 3mA from 1.25V supply.
Keywords :
CMOS analogue integrated circuits; UHF mixers; differential amplifiers; intermodulation distortion; low-power electronics; radio receivers; transceivers; 1.25 V; 3 mA; 900 MHz; CMOS technology; RF transceivers; differential transconductance amplifier; direct conversion receivers; down-conversion mixer; folded mixer topology; high linearity; linear transconductance amplifier; low power mixer; low voltage mixer; third-order intermodulation distortion; third-order linearity; CMOS technology; Differential amplifiers; Intermodulation distortion; Linearity; Low voltage; Power conversion; Radio frequency; Topology; Transceivers; Transconductance;
Conference_Titel :
Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on
Print_ISBN :
0-7803-8163-7
DOI :
10.1109/ICECS.2003.1301671
