Title :
A high linearity up-conversion mixer with IMD3 cancellation and gm3-boosting for 802.11a application
Author :
Wu, Chang-Hsi ; Chen, Wei-Chen ; Liu, Kuan-Lin
Author_Institution :
Dept. of Electron. Eng., Lunghwa Univ. of Sci. & Technol., Taoyuan, Taiwan
Abstract :
A high linearity up-conversion mixer using TSMC 0.18μm CMOS technology for IEEE 802.11a application is proposed in this paper. The gm-boosting and derivative superposition(DS) techniques are employed to improve conversion gain and linearity of the designed mixer, respectively. The DS method adds the auxiliary transistors to cancel the third-order derivatives ((gm)3) of drain currents from the main transistors. Measurement results of the proposed up-conversion mixer exhibits the conversion gain of 6.5dB and IIP3 of 0.2dBm while consuming 6.25mW from a 1.5V supply voltage. The chip size including pads is 1.15×1.1mm2.
Keywords :
CMOS integrated circuits; interference suppression; intermodulation distortion; mixers (circuits); wireless LAN; 802.11a; CMOS technology; IMD3 cancellation; derivative superposition techniques; gain 6.5 dB; gm3-boosting; high linearity up-conversion mixer; power 6.25 mW; size 0.18 mum; third-order derivatives; voltage 1.5 V; CMOS integrated circuits; CMOS technology; Linearity; Mixers; Radio frequency; Transconductance; Transistors;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230012
