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A 2-V 900-MHz CMOS mixer for GSM receivers

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4 Author(s)
Toby Kwok-Kei Kan ; Dept. of Electr. & Electron. Eng., Hong Kong Univ. Sci. & Technol., China ; Kin-Chung Mak ; Dongsheng Ma ; Luong, H.C.

A 2-V 900-MHz downconversion mixer to be used in a single-chip CMOS receiver is presented. The mixer is based on a Gilbert cell but uses two source-followers as current modulators rather than a common-source input stage in order to support low-voltage operation and to improve the linearity. Two prototypes have been made for different design trade-off. The first mixer prototype achieves a measured conversion gain of -8 dB and an IIP3 of 26 dBm with a power consumption of 1.5 mW from a 3-V supply. The second prototype has a measured conversion gain of -2 dB, a noise figure (NF) of 22 dB and an IIP3 of 6 dBm with a power consumption of 3 mW from a single 2-V supply

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Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on  (Volume:1 )

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