Title :
A novel 1.5V DC offset cancellation CMOS down conversion mixer
Author :
Phan, Anh-Tuan ; Kim, Chang-Wan ; Jung, Moon-Suk ; Shim, Yun-A ; Kim, Jae-Yung ; Lee, Sang-Gug
Author_Institution :
RFME Lab., Inf. & Commun. Univ., Daejeon, South Korea
Abstract :
This paper presents a novel DC offset cancellation mixer for a direct conversion receiver. The proposed mixer is designed in a TSMC 0.18 μm CMOS technology with a supply voltage of 1.5V for 2.1 GHz applications. The extra feedback circuitry is used to cancel the DC offset; common mode feedback (CMFB) is used for active load. The designed mixer has a conversion gain of 33 dB, NF of 3.9 dB and -13 dBm of IIP3. The DC offset is observed as 2%. Moreover, the proposed mixer consumes only 5.4 mA of current.
Keywords :
CMOS integrated circuits; UHF frequency convertors; UHF mixers; circuit feedback; radio receivers; 0.18 micron; 1.5 V; 2.1 GHz; 3.9 dB; 33 dB; 5.4 mA; CMFB; CMOS down conversion mixer; DC offset cancellation; TSMC CMOS technology; active load; common mode feedback; direct conversion receiver; feedback circuitry; CMOS technology; Capacitors; Consumer electronics; Degradation; Feedback circuits; Gain; Noise measurement; Radio frequency; Reflector antennas; Voltage;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465434
